[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Rodriguez, Daniel"]
[Black "Polgar, Zsuzsa"]
[Result "0-1"]
[WhiteElo "2235"]
[BlackElo "2520"]
[ECO "B22"]
[EventDate "1989.08.??"]
[PlyCount "46"]

1.e4 c5 2.Nf3 Nc6 3.c3 d5 4.exd5 Qxd5 5.d4 Bg4 6.Be2 cxd4 7.cxd4 e6 8.O-O 
Nf6 9.Nc3 Qa5 10.h3 Bh5 11.Ne5 Bxe2 12.Nxc6 Qxc3 13.Qxe2 Qxc6 14.Bg5 Be7 
15.Rac1 Qd7 16.d5 Nxd5 17.Bxe7 Qxe7 18.Rfd1 Qd7 19.Rd4 O-O 20.Rcd1 Rfd8 
21.Qd3 Rac8 22.Rh4 Nf6 23.Rd4 Qxd4 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Georges, Sascha"]
[Black "Ulybin, Mikhail"]
[Result "0-1"]
[WhiteElo "2220"]
[BlackElo "2495"]
[ECO "A30"]
[EventDate "1989.08.??"]
[PlyCount "54"]

1.c4 Nf6 2.Nf3 c5 3.Nc3 e6 4.g3 b6 5.Bg2 Bb7 6.O-O Be7 7.d4 cxd4 8.Qxd4 d6
9.Rd1 a6 10.b3 Nbd7 11.Bb2 O-O 12.Rac1 Rc8 13.e4 Qc7 14.Qe3 Rfd8 15.Nd4 
Bf8 16.h3 h5 17.Qe2 Re8 18.g4 hxg4 19.hxg4 d5 20.g5 Nxe4 21.Nxe4 dxe4 22.
Bxe4 Nc5 23.Bb1 Qf4 24.Qh5 Ne4 25.Nf3 e5 26.Rd7 Bc5 27.Kg2 g6 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Shirov, Alexei"]
[Black "Huda, Rehan"]
[Result "1/2-1/2"]
[WhiteElo "2470"]
[ECO "A57"]
[EventDate "1989.08.??"]
[PlyCount "82"]

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.b6 Qxb6 6.Nc3 d6 7.e4 g6 8.a4 a5 9.f4
Bg7 10.Bb5+ Nfd7 11.Nf3 O-O 12.O-O c4+ 13.Kh1 Ba6 14.Qe2 Bxb5 15.Be3 Nc5 
16.Nxb5 Nba6 17.Nd2 Qb7 18.Qxc4 Rfc8 19.Qe2 Bxb2 20.Ra2 Bg7 21.Bxc5 Nxc5 
22.f5 Rab8 23.fxg6 hxg6 24.Rb1 Qd7 25.h3 Rf8 26.g4 e6 27.Nc4 exd5 28.exd5 
Nxa4 29.Nxa5 Nc3 30.Nxc3 Bxc3 31.Rxb8 Rxb8 32.Nc6 Rb1+ 33.Kg2 Qb7 34.Ra7 
Rb2 35.Rxb7 Rxe2+ 36.Kf3 Rd2 37.Rd7 Be5 38.g5 Kf8 39.Rd8+ Kg7 40.Nxe5 dxe5
41.d6 f5 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Manor, Ilan"]
[Black "Miguel Lago, Victor Placido"]
[Result "1-0"]
[WhiteElo "2445"]
[ECO "E69"]
[EventDate "1989.08.??"]
[PlyCount "71"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 d6 6.O-O Nbd7 7.Nc3 e5 8.e4 c6 
9.h3 Qb6 10.Re1 exd4 11.Nxd4 Ne8 12.Nb3 a5 13.Be3 Qb4 14.a3 Qxc4 15.Nd4 f6
16.Rc1 Qf7 17.f4 Nc5 18.f5 a4 19.g4 g5 20.Qc2 h6 21.Rcd1 Bd7 22.Qf2 Qe7 
23.Nf3 Nb3 24.Bb6 Qf7 25.Bf1 Kh7 26.h4 c5 27.Nd5 Bc6 28.Bc4 Bxd5 29.Rxd5 
Qe7 30.hxg5 fxg5 31.e5 dxe5 32.Nxe5 Qf6 33.Nd7 Qc6 34.Nxf8+ Bxf8 35.Re6 
Nd6 36.Bxc5 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Hokkanen, Petri"]
[Black "Spasov, Vasil"]
[Result "0-1"]
[BlackElo "2430"]
[ECO "A15"]
[EventDate "1989.08.??"]
[PlyCount "72"]

1.Nf3 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O d6 6.d3 Nc6 7.Nbd2 e5 8.Rb1 h6 
9.b4 Be6 10.Qc2 Qd7 11.Re1 Nh7 12.b5 Ne7 13.Bb2 f5 14.e4 fxe4 15.dxe4 b6 
16.Qd3 Rf7 17.Rbd1 Raf8 18.Rf1 Bg4 19.Rc1 h5 20.Qe3 Kh8 21.h4 Ng8 22.Ng5 
Re7 23.f4 exf4 24.Bxg7+ Rxg7 25.Rxf4 Rxf4 26.gxf4 Qe7 27.Re1 Nh6 28.Ndf3 
Bxf3 29.Bxf3 Nf6 30.e5 Nfg4 31.Bxg4 Nxg4 32.Qd4 dxe5 33.fxe5 Qa3 34.e6 Kg8
35.e7 Qg3+ 36.Kf1 Nh2+ 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Koch, Jean-Rene"]
[Black "De Meyer, Geert"]
[Result "1-0"]
[WhiteElo "2420"]
[ECO "C14"]
[EventDate "1989.08.??"]
[PlyCount "69"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.f4 O-O 8.Nf3 
c5 9.dxc5 Nc6 10.Bd3 f5 11.exf6 Nxf6 12.Qe2 Qxc5 13.O-O-O a6 14.Ne5 b5 15.
Nxc6 Qxc6 16.Qe5 Bb7 17.Rhe1 Rae8 18.Ne2 Qc8 19.g3 Rf7 20.Nd4 Ne4 21.Nf3 
Rc7 22.Qd4 a5 23.Re2 b4 24.Kb1 Ba6 25.Qb6 Bxd3 26.cxd3 Nc3+ 27.bxc3 bxc3 
28.Qf2 Qb7+ 29.Ka1 Rec8 30.Rc2 a4 31.Rb1 Qa6 32.Ne5 Rb7 33.Qe1 Rcb8 34.
Rxb7 Qxb7 35.d4 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Walsh, Chris"]
[Black "Serper, Grigory"]
[Result "0-1"]
[BlackElo "2420"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Djurhuus, Rune"]
[Black "Chung, Ronnie"]
[Result "1-0"]
[WhiteElo "2415"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Warner, Delisle"]
[Black "Gdanski, Jacek"]
[Result "0-1"]
[BlackElo "2405"]
[ECO "E64"]
[EventDate "1989.08.??"]
[PlyCount "101"]

1.d4 Nf6 2.c4 c5 3.d5 g6 4.Nc3 d6 5.g3 Bg7 6.Bg2 O-O 7.Nf3 Na6 8.O-O Bg4 
9.Ne1 Qc8 10.Nd3 Nc7 11.Re1 Rb8 12.a4 b6 13.Qc2 a6 14.Rb1 b5 15.axb5 axb5 
16.cxb5 Nxb5 17.Nxb5 Rxb5 18.Bd2 Bd7 19.e4 Ng4 20.Bc3 c4 21.Bxg7 Kxg7 22.
Qc3+ Kg8 23.Nc1 Qc5 24.Re2 Rfb8 25.h3 Ne5 26.Kh2 Qb4 27.Qxb4 Rxb4 28.f4 
Nd3 29.Nxd3 cxd3 30.Rd2 Ba4 31.b3 Bb5 32.Bf3 Rc8 33.Kg2 Rc2 34.Rd1 Rxd2+ 
35.Rxd2 Rxb3 36.Kf2 Kg7 37.Ke3 Kf6 38.Bg2 Rb1 39.Kf2 g5 40.Bf1 Rb3 41.Ke3 
Kg6 42.Bxd3 gxf4+ 43.gxf4 Kh5 44.Kd4 Rxd3+ 45.Rxd3 Bxd3 46.Kxd3 Kh4 47.e5 
Kxh3 48.f5 f6 49.exd6 exd6 50.Kc4 Kg4 51.Kb5 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Kontic, Vladimir"]
[Black "Rodrigues, Adriano von Pfuhl"]
[Result "1-0"]
[WhiteElo "2395"]
[ECO "B22"]
[EventDate "1989.08.??"]
[PlyCount "107"]

1.e4 c5 2.Nf3 e6 3.c3 d6 4.d4 cxd4 5.cxd4 Nf6 6.Nc3 Nc6 7.Bd3 e5 8.d5 Nb8 
9.O-O Be7 10.h3 O-O 11.Be3 Ne8 12.Rc1 a6 13.b4 g6 14.Qb3 Nd7 15.Bh6 Ng7 
16.Rc2 f5 17.Rfc1 Rf7 18.Ne2 b6 19.Qc4 Bb7 20.Qc7 Rb8 21.Qxd8+ Bxd8 22.Ng5
Bxg5 23.Bxg5 Ne8 24.f3 Kg7 25.Be3 h6 26.a4 f4 27.Bf2 g5 28.Kf1 Kg6 29.Ke1 
h5 30.Kd2 Rh7 31.g3 Kf7 32.Rg1 Rh8 33.gxf4 gxf4 34.Rg5 Nc7 35.h4 Bc8 36.
Nc3 Nf6 37.Rb2 Bd7 38.Rg1 b5 39.a5 Rhg8 40.Rc1 Nfe8 41.Bf1 Ke7 42.Ne2 Rg7 
43.Ng1 Rg8 44.Nh3 Rg7 45.Ng5 Rg6 46.Ke2 Rg8 47.Bh3 Bxh3 48.Nxh3 Kd7 49.Ng5
Rg6 50.Rc6 Rf6 51.Bb6 Na8 52.Ba7 Nac7 53.Bxb8 Rf8 54.Bxc7 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Apaza, Henry"]
[Black "Stangl, Markus"]
[Result "0-1"]
[BlackElo "2375"]
[ECO "A40"]
[EventDate "1989.08.??"]
[PlyCount "41"]

1.d4 g6 2.e3 Bg7 3.Nc3 d6 4.e4 Nd7 5.Be3 e5 6.Qd2 Ngf6 7.f3 O-O 8.O-O-O c6
9.g4 Qa5 10.h4 Rb8 11.h5 Re8 12.hxg6 fxg6 13.d5 cxd5 14.Nxd5 Qxa2 15.Nc3 
Qa5 16.Nge2 Nf8 17.Ng3 Be6 18.g5 N6d7 19.Qxd6 Rbc8 20.Rd5 Bxd5 21.Nxd5 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Wessman, Richard"]
[Black "Melgosa, Marcio"]
[Result "1-0"]
[WhiteElo "2370"]
[ECO "A67"]
[EventDate "1989.08.??"]
[PlyCount "39"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Bb5+ Nbd7
9.e5 dxe5 10.fxe5 Nh5 11.e6 fxe6 12.dxe6 O-O 13.Nf3 Rxf3 14.Qxf3 Ne5 15.
Qd5 Qh4+ 16.g3 Qe7 17.Bg5 Bf6 18.Bxf6 Qxf6 19.Rf1 Qxe6 20.Qd8+ 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Haughton, Richard"]
[Black "Van Wely, Loek"]
[Result "0-1"]
[BlackElo "2340"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Rios Parra, Alejandro"]
[Black "Boissonet, Carlos"]
[Result "0-1"]
[BlackElo "2340"]
[ECO "B01"]
[EventDate "1989.08.??"]
[PlyCount "52"]

1.e4 d5 2.exd5 Nf6 3.Bb5+ Bd7 4.Bc4 b5 5.Bb3 Bg4 6.f3 Bc8 7.Qe2 a6 8.a4 b4
9.c4 c6 10.d4 cxd5 11.c5 Nc6 12.Be3 g6 13.Nd2 Bg7 14.Bc2 O-O 15.g4 e5 16.
dxe5 Nxe5 17.O-O-O a5 18.Bg5 Re8 19.Ne4 Ba6 20.Qg2 b3 21.Bb1 Rc8 22.Bxf6 
Bxf6 23.Nxf6+ Qxf6 24.Rxd5 Qf4+ 25.Qd2 Rxc5+ 26.Kd1 Nxf3 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Sorensen, Jan"]
[Black "Martinez Echezarreta, Arturo"]
[Result "1/2-1/2"]
[WhiteElo "2335"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Mera Cedeno, Angel"]
[Black "Moutousis, Konstantinos"]
[Result "0-1"]
[BlackElo "2330"]
[ECO "E15"]
[EventDate "1989.08.??"]
[PlyCount "80"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.Qc2 c5 6.Bg2 Bb7 7.dxc5 Bxc5 8.Nc3 
O-O 9.O-O Nc6 10.a3 Rc8 11.Rd1 Be7 12.e4 Na5 13.b3 Qe8 14.e5 Ng4 15.Bf4 f6
16.exf6 Nxf6 17.Nb5 Be4 18.Qc3 Nd5 19.Qd4 Bxf3 20.cxd5 Bxg2 21.Kxg2 Nxb3 
22.Qe4 Nxa1 23.Rxa1 Qg6 24.Qe3 Bc5 25.Qd2 Qe4+ 26.f3 Qxd5 27.Qxd5 exd5 28.
Nxa7 Rce8 29.a4 Re2+ 30.Kh3 h6 31.Rd1 g5 32.Bc7 Rxf3 33.Rxd5 Be7 34.Kg4 
Ra3 35.Bxb6 Rxa4+ 36.Kh3 Raa2 37.Kg4 Rxh2 38.Rxd7 h5+ 39.Kf5 Rhb2 40.Rxe7 
Rxb6 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Ruxton, Keith"]
[Black "Castillo Melendez, Otto Rene"]
[Result "1-0"]
[WhiteElo "2325"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Imocha, Laisram"]
[Black "Parodi, Rafael"]
[Result "1-0"]
[WhiteElo "2315"]
[ECO "D43"]
[EventDate "1989.08.??"]
[PlyCount "57"]

1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 c6 5.Qb3 Be7 6.g3 Nbd7 7.Bg2 Qc7 8.O-O O-O
9.Bg5 b6 10.Rac1 Ba6 11.cxd5 exd5 12.Nxd5 Nxd5 13.Qxd5 Nf6 14.Bxf6 Bxf6 
15.Rxc6 Qe7 16.Ne5 Rad8 17.Qb3 Rxd4 18.Nf3 Rd7 19.Re1 Rfd8 20.e3 Bb7 21.
Rcc1 Rd3 22.Qb5 R3d5 23.Qe2 R5d7 24.e4 Qb4 25.e5 Re8 26.Rc4 Qe7 27.Rc2 Qb4
28.a3 Qa5 29.b4 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Torres Baldeon, Jean Pierre"]
[Black "Hsu Li Yang"]
[Result "1-0"]
[BlackElo "2315"]
[ECO "B02"]
[EventDate "1989.08.??"]
[PlyCount "59"]

1.e4 d5 2.exd5 Nf6 3.Nc3 Nxd5 4.Bc4 Nb6 5.Bb3 Nc6 6.Nf3 Bf5 7.O-O e6 8.d3 
Be7 9.a4 O-O 10.Re1 Nd4 11.Nxd4 Qxd4 12.Qf3 c6 13.a5 Nd5 14.Bxd5 cxd5 15.
Nxd5 Bb4 16.Ra4 exd5 17.Qxf5 Rfe8 18.Rf1 Qc5 19.Qg4 d4 20.Bh6 g6 21.c3 
Bxa5 22.b4 Qxc3 23.bxa5 Rad8 24.Qf3 Re1 25.Rc4 Rxf1+ 26.Kxf1 Qb3 27.g3 Re8
28.Kg2 Qb5 29.Rxd4 b6 30.Qf6 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Brandner, Stefan"]
[Black "Santos, Carlos Pereira"]
[Result "1-0"]
[WhiteElo "2305"]
[ECO "C07"]
[EventDate "1989.08.??"]
[PlyCount "52"]

1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 Qxd5 5.Ngf3 cxd4 6.Bc4 Qd6 7.O-O Nf6 8.Nb3
Nc6 9.Nbxd4 Nxd4 10.Nxd4 a6 11.b3 Qc7 12.Qf3 Bd6 13.h3 O-O 14.Bb2 b5 15.
Bxb5 e5 16.Bc6 Rb8 17.Ne2 Rb6 18.Be4 Nxe4 19.Qxe4 Bb7 20.Qf5 Re8 21.Rad1 
Re6 22.f3 e4 23.Nf4 Rh6 24.fxe4 Qxc2 25.Nh5 Bc5+ 26.Kh1 f6 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Segovia, Javier"]
[Black "Hernandez, Gilberto"]
[Result "0-1"]
[BlackElo "2300"]
[ECO "B22"]
[EventDate "1989.08.??"]
[PlyCount "104"]

1.e4 c5 2.c3 d5 3.exd5 Qxd5 4.d4 e6 5.Nf3 Nf6 6.c4 Qd7 7.Be2 Nc6 8.dxc5 
Bxc5 9.O-O h6 10.Nc3 Qc7 11.a3 b6 12.Nb5 Qb8 13.b4 Be7 14.Bb2 O-O 15.Nbd4 
Nxd4 16.Qxd4 Rd8 17.Qh4 Bb7 18.Rfd1 Qc7 19.Be5 Qc6 20.Bg3 Qe4 21.Kf1 Nh5 
22.Qh3 Nf4 23.Bxf4 Qxf4 24.Qg3 g5 25.Qxf4 gxf4 26.Rxd8+ Rxd8 27.Rd1 Rxd1+ 
28.Bxd1 Bf6 29.Ne1 Bb2 30.Nc2 e5 31.a4 Kf8 32.g3 Bc1 33.Ne1 e4 34.Nc2 f3 
35.Ke1 Ke7 36.Nd4 h5 37.Bb3 Bb2 38.Nf5+ Ke6 39.Ne3 Bc3+ 40.Kd1 Ke5 41.b5 
f5 42.c5 bxc5 43.Nc4+ Kf6 44.Nd6 Ba8 45.Ne8+ Ke5 46.Nc7 Bb7 47.Bf7 Ba5 48.
Ne8 h4 49.gxh4 f4 50.Bc4 e3 51.fxe3 fxe3 52.h5 Bd5 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Mamombe, Kudzanai"]
[Black "Rodriguez Vila, Andres"]
[Result "0-1"]
[BlackElo "2295"]
[ECO "C05"]
[EventDate "1989.08.??"]
[PlyCount "62"]

1.e4 e6 2.d3 d5 3.Nd2 Nf6 4.Ngf3 Bc5 5.e5 Nfd7 6.d4 Be7 7.Bd3 c5 8.c3 Nc6 
9.b3 cxd4 10.cxd4 f6 11.Nh4 O-O 12.Qh5 f5 13.Nhf3 Qc7 14.Ba3 Ndxe5 15.dxe5
Bxa3 16.O-O Nxe5 17.Nxe5 Qxe5 18.Nf3 Qf6 19.Rfe1 e5 20.Rxe5 Bb2 21.Rae1 
Bxe5 22.Rxe5 g6 23.Qh6 Rd8 24.Qe3 Bd7 25.Rxd5 Bc6 26.Rxd8+ Rxd8 27.Ne5 f4 
28.Bc4+ Kg7 29.Qc5 Rd1+ 30.Bf1 Rd5 31.Qxa7 Qxe5 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Martin, Benjamin"]
[Black "Dao Thien Hai"]
[Result "1/2-1/2"]
[WhiteElo "2280"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "1"]
[White "Vasquez Schroder, Rodrigo"]
[Black "Zulu, David"]
[Result "1-0"]
[ECO "B84"]
[EventDate "1989.08.??"]
[PlyCount "79"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e6 7.O-O Nc6 8.Be3 
Qc7 9.f4 Be7 10.a4 Rb8 11.Nb3 b6 12.g4 Bb7 13.g5 Nd7 14.Bd3 Nb4 15.Nd4 Nc5
16.Qe2 O-O 17.Rf3 g6 18.Rh3 Qd7 19.Rf1 f5 20.exf5 exf5 21.Bd2 Rbe8 22.Re3 
d5 23.Re1 Ne4 24.Nxe4 fxe4 25.Bc4 dxc4 26.Bxb4 Qxd4 27.Rd1 Qxd1+ 28.Qxd1 
Bxb4 29.Kg2 Bc5 30.Re2 Rxf4 31.Qd7 Re7 32.Qh3 Ref7 33.Qe6 e3+ 34.Kg3 Rf3+ 
35.Kg4 Rf4+ 36.Kg3 Bd6 37.Qxd6 Bf3 38.Rxe3 Rg4+ 39.Kh3 Rxg5 40.Qd8+ 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "Boissonet, Carlos"]
[Black "Dreev, Alexei"]
[Result "1/2-1/2"]
[WhiteElo "2340"]
[BlackElo "2570"]
[ECO "D45"]
[EventDate "1989.08.??"]
[PlyCount "120"]

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6 5.e3 Nbd7 6.Qc2 Bd6 7.b3 O-O 8.Be2 Qe7 
9.O-O dxc4 10.bxc4 e5 11.Bb2 Re8 12.c5 Bc7 13.Bc4 h6 14.Rae1 e4 15.Nd2 
Bxh2+ 16.Kxh2 Ng4+ 17.Kg3 Ndf6 18.Ncxe4 Nxe4+ 19.Qxe4 Qxe4 20.Nxe4 Rxe4 
21.f3 Rxe3 22.d5 Kf8 23.d6 Bd7 24.Bd4 Rae8 25.Rb1 Ne5 26.Bxe3 Nxc4 27.Bf4 
b6 28.a4 g5 29.Bc1 Re5 30.Rh1 Rxc5 31.Bb2 Nxb2 32.Rxb2 Kg7 33.Rd2 Re5 34.
Kf2 Re6 35.g4 Kf8 36.Re1 Ke8 37.Rxe6+ Bxe6 38.Ke3 Kd7 39.Ke4 Bd5+ 40.Ke5 
Bxf3 41.Rf2 Bd5 42.Rh2 Bb3 43.Rxh6 Bxa4 44.Rh8 f6+ 45.Kxf6 Kxd6 46.Kxg5 
Bb3 47.Rh3 Be6 48.Kf4 a5 49.Rd3+ Kc5 50.Rc3+ Kb5 51.g5 Bf7 52.Ke5 c5 53.
Rf3 Bg6 54.Rf6 Bd3 55.Rd6 Bh7 56.Rd7 Bc2 57.Rd2 Bh7 58.Kd5 Bg8+ 59.Kd6 a4 
60.Rb2+ Ka5 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "Polgar, Zsuzsa"]
[Black "Wessman, Richard"]
[Result "0-1"]
[WhiteElo "2520"]
[BlackElo "2370"]
[ECO "D00"]
[EventDate "1989.08.??"]
[PlyCount "54"]

1.d4 Nf6 2.Nf3 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.Be2 c5 7.dxc5 Qa5 8.O-O 
Qxc5 9.Nb5 Nc6 10.c3 a5 11.Rc1 Bg4 12.a4 Nh5 13.Bc7 Bh8 14.h3 Bxf3 15.Bxf3
Nf6 16.Qb3 Ne8 17.Bg3 e6 18.Rcd1 Be5 19.Bf4 Bxf4 20.exf4 Nd6 21.Bxd5 exd5 
22.Rxd5 Qc4 23.Qd1 Nxb5 24.axb5 Rad8 25.Rd7 Qxb5 26.Re1 Qxb2 27.f5 Qxc3 
0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "Ulybin, Mikhail"]
[Black "Ruxton, Keith"]
[Result "1-0"]
[WhiteElo "2495"]
[BlackElo "2325"]
[ECO "B18"]
[EventDate "1989.08.??"]
[PlyCount "109"]

1.e4 c6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.Bc4 e6 7.N1e2 Bd6 8.O-O 
Ne7 9.Nf4 Nd5 10.Nfh5 O-O 11.Bb3 Qh4 12.f4 Bxh5 13.Qxh5 Qxh5 14.Nxh5 g6 
15.Ng3 Nf6 16.Be3 Nbd7 17.Rad1 Rfd8 18.Ne2 Rac8 19.c3 Kf8 20.h3 a6 21.g4 
Re8 22.Kg2 Nd5 23.Bc1 f5 24.c4 N5f6 25.g5 Ng8 26.Ng1 b5 27.Rfe1 Kf7 28.Nf3
Bb8 29.d5 exd5 30.cxd5 c5 31.Kf1 c4 32.Bc2 Rxe1+ 33.Kxe1 Bd6 34.Be3 Re8 
35.Kf2 Nc5 36.Ne5+ Ke7 37.Kf3 Nd7 38.Bd4 Bc5 39.Nc6+ Kf7 40.Ne5+ Nxe5+ 41.
Bxe5 Rd8 42.d6 Ke6 43.b3 Bxd6 44.bxc4 bxc4 45.Rd4 Bc7 46.Rxc4 Bxe5 47.fxe5
Kxe5 48.Rc5+ Kd4 49.Rc7 Re8 50.Bb3 a5 51.Rd7+ Kc5 52.Rxh7 Ne7 53.Ba4 Nc6 
54.Rc7 Re6 55.h4 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "Moutousis, Konstantinos"]
[Black "Manor, Ilan"]
[Result "0-1"]
[WhiteElo "2330"]
[BlackElo "2445"]
[ECO "B08"]
[EventDate "1989.08.??"]
[PlyCount "108"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.h3 Bg7 5.Nf3 O-O 6.Be3 a6 7.Qd2 b5 8.e5 Ne8 9.
O-O-O dxe5 10.dxe5 Qxd2+ 11.Rxd2 Nc6 12.Bf4 f6 13.exf6 Nxf6 14.Be3 Kh8 15.
Be2 Be6 16.Ng5 b4 17.Nxe6 bxc3 18.bxc3 Ne4 19.Nxf8 Rxf8 20.Bxa6 Nxc3 21.
Bc4 Ra8 22.Rd3 Nxa2+ 23.Bxa2 Rxa2 24.Kd2 Be5 25.Rb1 Kg7 26.g3 Bd6 27.Bd4+ 
Nxd4 28.Rxd4 Ra5 29.g4 Rc5 30.Rb3 h5 31.Kd3 Ra5 32.Re4 Rd5+ 33.Ke2 Rc5 34.
c4 Ra5 35.Kf1 hxg4 36.hxg4 Ra1+ 37.Kg2 Rc1 38.Rbe3 Kf6 39.Re1 Rc3 40.R1e2 
e5 41.Ra2 Kg5 42.Ra5 Kf6 43.Kf1 Rc2 44.Rd5 Rc1+ 45.Ke2 Rc2+ 46.Rd2 Rc3 47.
Kd1 Bc5 48.Ra2 Bb6 49.Rc2 Rxc2 50.Kxc2 Bxf2 51.Kb3 Bg3 52.Kc3 Kg5 53.c5 
Bf4 54.c6 Kxg4 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "Spasov, Vasil"]
[Black "Imocha, Laisram"]
[Result "1-0"]
[WhiteElo "2430"]
[BlackElo "2315"]
[ECO "C06"]
[EventDate "1989.08.??"]
[PlyCount "105"]

1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.Bd3 c5 5.e5 Nfd7 6.c3 Nc6 7.Ne2 Qb6 8.Nf3 cxd4
9.cxd4 f6 10.exf6 Nxf6 11.O-O Bd6 12.Nc3 Bd7 13.Be3 O-O 14.Re1 Rae8 15.Ne5
Bxe5 16.dxe5 Qxb2 17.Bd2 Ne4 18.Nxe4 dxe4 19.Rxe4 Nxe5 20.Rb1 Qa3 21.Rb3 
Qc5 22.Be3 Qa5 23.Rxb7 Bc6 24.Rxa7 Qd5 25.Bd4 Rf5 26.Rg4 g6 27.Be4 Qd6 28.
Rh4 Rg5 29.f3 Rd8 30.Raxh7 Rh5 31.R4xh5 gxh5 32.Rxh5 Bxe4 33.Rh8+ Kxh8 34.
Bxe5+ Qxe5 35.Qxd8+ Kg7 36.fxe4 Qxe4 37.Qd2 Kf7 38.h3 Ke7 39.a3 Kf7 40.Kf2
e5 41.Qe3 Qc2+ 42.Kg3 Ke6 43.h4 Kd5 44.h5 e4 45.h6 Qc6 46.Kh3 Qg6 47.g4 
Qa6 48.Kg3 Qd6+ 49.Kg2 Qg6 50.Kh3 Qa6 51.g5 Qe6+ 52.Kh4 Qg6 53.a4 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "Van Wely, Loek"]
[Black "Koch, Jean-Rene"]
[Result "1/2-1/2"]
[WhiteElo "2320"]
[BlackElo "2420"]
[ECO "A57"]
[EventDate "1989.08.??"]
[PlyCount "90"]

1.d4 Nf6 2.c4 c5 3.d5 b5 4.Nf3 Bb7 5.a4 b4 6.Nbd2 Qc7 7.e4 e5 8.Bd3 d6 9.
O-O Nbd7 10.Nh4 O-O-O 11.g3 g6 12.f4 exf4 13.gxf4 Bg7 14.Rb1 Rde8 15.b3 
Kb8 16.Bb2 Bc8 17.Qc2 Nh5 18.Bxg7 Nxg7 19.Rbe1 Rhf8 20.Ndf3 f6 21.Kh1 Rf7 
22.Qb2 Nh5 23.Ng2 Ref8 24.Kg1 Nb6 25.Re3 Bg4 26.Nfe1 Re7 27.h3 Bc8 28.Be2 
Ng7 29.Nd3 Nd7 30.Bd1 Rfe8 31.Rfe1 g5 32.Qf2 gxf4 33.Qxf4 Ne5 34.Qxf6 Nxd3
35.Rxd3 Rxe4 36.Rxe4 Rxe4 37.Rg3 Ne8 38.Qh8 Qe7 39.Bc2 Re2 40.Bxh7 Qf7 41.
Kh2 Qh5 42.Qg8 Nf6 43.Qd8 Qe5 44.Bf5 Qxf5 45.Qxd6+ Ka8 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "Serper, Grigory"]
[Black "Brandner, Stefan"]
[Result "1-0"]
[WhiteElo "2420"]
[BlackElo "2305"]
[ECO "D32"]
[EventDate "1989.08.??"]
[PlyCount "51"]

1.c4 e6 2.Nc3 d5 3.d4 c5 4.cxd5 cxd4 5.Qa4+ Bd7 6.Qxd4 exd5 7.Qxd5 Nc6 8.
Nf3 Nf6 9.Qd1 Bc5 10.e3 Qe7 11.Be2 O-O-O 12.O-O g5 13.Bd2 g4 14.Nd4 h5 15.
b4 Bxb4 16.Rb1 Nxd4 17.exd4 Bxc3 18.Bxc3 Nd5 19.Ba5 b6 20.Bd2 Qe4 21.Re1 
Qxd4 22.Bc3 Qxd1 23.Ba6+ Kb8 24.Be5+ Nc7 25.Rbxd1 Rhe8 26.Rxd7 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "Hernandez, Gilberto"]
[Black "Djurhuus, Rune"]
[Result "0-1"]
[WhiteElo "2300"]
[BlackElo "2415"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "Gdanski, Jacek"]
[Black "Vasquez Schroder, Rodrigo"]
[Result "1-0"]
[WhiteElo "2405"]
[BlackElo "2300"]
[ECO "C18"]
[EventDate "1989.08.??"]
[PlyCount "59"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.Qg4 Qc7 8.Qxg7 
Rg8 9.Qxh7 cxd4 10.Ne2 Nbc6 11.f4 Bd7 12.Qd3 dxc3 13.Rb1 Rc8 14.h4 Nf5 15.
h5 Nce7 16.h6 Rh8 17.h7 Ng6 18.Ng3 Kf8 19.Nxf5 exf5 20.Qxd5 b6 21.Be3 Be6 
22.Qf3 Bc4 23.Kf2 Bxf1 24.Rbxf1 Qc4 25.Rd1 Qa4 26.Kg3 Qxc2 27.e6 Qa4 28.
Rd7 fxe6 29.Qb7 Qc6 30.Rd8+ 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "Rodriguez Vila, Andres"]
[Black "Kontic, Vladimir"]
[Result "0-1"]
[WhiteElo "2295"]
[BlackElo "2395"]
[ECO "C03"]
[EventDate "1989.08.??"]
[PlyCount "78"]

1.e4 e6 2.d4 d5 3.Nd2 Bd6 4.Ngf3 c5 5.exd5 exd5 6.c3 Nf6 7.Bd3 cxd4 8.Nxd4
Qc7 9.O-O O-O 10.h3 Nc6 11.N2f3 h6 12.Nf5 Bc5 13.Nxg7 Kxg7 14.Bxh6+ Kh8 
15.Ng5 Ne5 16.Re1 Bxf2+ 17.Kxf2 Nfg4+ 18.hxg4 Nxg4+ 19.Kf1 Qb6 20.Qd2 Qxh6
21.Nf3 Qh1+ 22.Ng1 Rg8 23.g3 Nh2+ 24.Kf2 Ng4+ 25.Kf1 Bd7 26.Re2 Raf8 27.
Qf4 Re8 28.Rae1 Re6 29.Qd4+ Rf6+ 30.Rf2 Qh6 31.Rxf6 Nxf6 32.Re3 Rg4 33.Qe5
Kg7 34.Rf3 Rg5 35.Qe7 Bg4 36.Rf4 Be6 37.Rf3 Re5 38.Qc7 Bh3+ 39.Kf2 Ng4# 
0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "Huda, Rehan"]
[Black "Martin, Benjamin"]
[Result "1-0"]
[WhiteElo "2230"]
[BlackElo "2280"]
[ECO "E02"]
[EventDate "1989.08.??"]
[PlyCount "99"]

1.Nf3 d5 2.d4 Nf6 3.c4 dxc4 4.Qa4+ Nbd7 5.g3 e6 6.Bg2 Be7 7.Qxc4 c5 8.dxc5
Nxc5 9.O-O Qd5 10.Qc2 Qe4 11.Qd1 Qa4 12.Nc3 Qxd1 13.Rxd1 O-O 14.Ne5 Nfd7 
15.Nxd7 Bxd7 16.Bxb7 Rab8 17.Bg2 Rfd8 18.b3 Kf8 19.Be3 a6 20.Rac1 Rbc8 21.
h4 h5 22.Ne4 Nxe4 23.Bxe4 Bb5 24.Rxd8+ Rxd8 25.Bf3 Ba3 26.Bc5+ Bxc5 27.
Rxc5 Rd2 28.a4 Bxe2 29.Bxe2 Rxe2 30.Rxh5 Rb2 31.Rh8+ Ke7 32.Rb8 Kf6 33.g4 
Ke5 34.Rb7 Kf4 35.Rxf7+ Kxg4 36.Rxg7+ Kxh4 37.Rg3 a5 38.Kg2 Rb1 39.Re3 Kg4
40.Rxe6 Rxb3 41.Rg6+ Kf4 42.Ra6 Ra3 43.Rxa5 Ke4 44.Ra8 Kd5 45.a5 Kc6 46.a6
Kb6 47.f3 Ra2+ 48.Kg3 Ra3 49.Kg4 Ra1 50.f4 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "Martinez Echezarreta, Arturo"]
[Black "Shirov, Alexei"]
[Result "1-0"]
[BlackElo "2495"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "Stangl, Markus"]
[Black "Torres Baldeon, Jean Pierre"]
[Result "1-0"]
[WhiteElo "2375"]
[ECO "E17"]
[EventDate "1989.08.??"]
[PlyCount "54"]

1.Nf3 Nf6 2.c4 e6 3.g3 b6 4.Bg2 Bb7 5.O-O Be7 6.d4 Qc8 7.Nc3 Ne4 8.Bd2 O-O
9.d5 Nd6 10.b3 Bf6 11.Rc1 Re8 12.Ne1 e5 13.e4 Na6 14.Nd3 Qd8 15.Qg4 Nc5 
16.Nxc5 bxc5 17.Na4 Bc8 18.Nxc5 Rb8 19.Nd3 Nb7 20.Qe2 c6 21.f4 d6 22.fxe5 
Bxe5 23.Nxe5 dxe5 24.Qf2 Qe7 25.b4 f6 26.Rb1 Bd7 27.Be3 Qxb4 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "Dao Thien Hai"]
[Black "Sorensen, Jan"]
[Result "0-1"]
[BlackElo "2335"]
[ECO "A59"]
[EventDate "1989.08.??"]
[PlyCount "80"]

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 g6 6.Nc3 Bxa6 7.e4 Bxf1 8.Kxf1 
d6 9.g3 Bg7 10.Kg2 O-O 11.Nf3 Nbd7 12.h3 Qa5 13.Re1 Rfb8 14.e5 dxe5 15.
Nxe5 Nxe5 16.Rxe5 Ra7 17.Qe1 Qd8 18.Rb1 Rd7 19.Bf4 Rbb7 20.Na4 Rxd5 21.
Nxc5 Rxe5 22.Qxe5 Rb4 23.Qe1 Qd5+ 24.Kg1 Qxc5 25.Rc1 Rc4 26.Rxc4 Qxc4 27.
Qxe7 h5 28.a3 Ne4 29.b4 Kh7 30.Be3 Nc3 31.Qc5 Qb3 32.Kg2 Qxa3 33.Qc4 Qa8+ 
34.Kh2 Qd5 35.Qxd5 Nxd5 36.Bc5 Nc7 37.Bb6 Nb5 38.Kg2 Bd4 39.Bd8 Kg7 40.Kf3
Bc3 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "Hsu Li Yang"]
[Black "Apaza, Henry"]
[Result "0-1"]
[WhiteElo "2315"]
[ECO "A39"]
[EventDate "1989.08.??"]
[PlyCount "58"]

1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.g3 O-O 5.Bg2 c5 6.O-O cxd4 7.Nxd4 Nc6 8.Nc3 
Ng4 9.e3 Nge5 10.b3 d6 11.h3 h5 12.Nde2 Qa5 13.Nd5 Nxc4 14.bxc4 Bxa1 15.
Bd2 Qxa2 16.Nc1 Qxc4 17.Nc7 Bf5 18.Bd5 Qc2 19.Qe2 Bc3 20.Bxc3 Qxc3 21.g4 
hxg4 22.hxg4 Bxg4 23.Qxg4 Ne5 24.Qg5 Qxc7 25.Nd3 e6 26.Nxe5 dxe5 27.Be4 
Kg7 28.Kg2 Rh8 29.Rg1 f5 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "Melgosa, Marcio"]
[Black "Rodriguez, Daniel"]
[Result "0-1"]
[BlackElo "2235"]
[ECO "B22"]
[EventDate "1989.08.??"]
[PlyCount "66"]

1.e4 c5 2.d4 cxd4 3.c3 Nf6 4.e5 Nd5 5.cxd4 e6 6.Nc3 Nxc3 7.bxc3 Qc7 8.Bd2 
b6 9.Bd3 Bb7 10.Nf3 d6 11.O-O Nd7 12.Bf4 dxe5 13.Nxe5 Nxe5 14.Bxe5 Bd6 15.
Bb5+ Ke7 16.f4 h5 17.Qe2 Rad8 18.Rac1 Rh6 19.Bd3 Qc6 20.Rc2 g6 21.f5 gxf5 
22.Bxf5 Rg8 23.Bxd6+ Kxd6 24.Qe5+ Ke7 25.Re2 h4 26.Be4 Qd7 27.d5 Ke8 28.
Rd2 Bc8 29.Rf4 Rh5 30.dxe6 Qxe6 31.Qc7 Kf8 32.Rd1 Rc5 33.Qd8+ Kg7 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "Castillo Melendez, Otto Rene"]
[Black "Georges, Sascha"]
[Result "1/2-1/2"]
[BlackElo "2220"]
[ECO "B20"]
[EventDate "1989.08.??"]
[PlyCount "53"]

1.e4 c5 2.b3 Nc6 3.Bb2 e6 4.Nf3 Nf6 5.e5 Nd5 6.Bb5 Qc7 7.O-O b6 8.d4 cxd4 
9.Bxc6 dxc6 10.Nxd4 Qxe5 11.Re1 Qg5 12.Nd2 Bd7 13.N2f3 Qd8 14.Nf5 Nf6 15.
Qd2 Qc7 16.Be5 Qb7 17.Bd6 g6 18.Qg5 gxf5 19.Qxf6 Rg8 20.Bxf8 Kxf8 21.Ng5 
Rg7 22.Rad1 Kg8 23.Re3 Be8 24.Rg3 Rg6 25.Nf3 c5 26.Ne5 Rxg3 27.hxg3 
1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "Chung, Ronnie"]
[Black "Segovia, Javier"]
[Result "0-1"]
[ECO "C00"]
[EventDate "1989.08.??"]
[PlyCount "62"]

1.e4 e6 2.d3 d5 3.Nd2 Nf6 4.g3 c5 5.Bg2 Nc6 6.Ngf3 b5 7.O-O Be7 8.e5 Nd7 
9.Re1 O-O 10.Nf1 a5 11.h4 a4 12.N1h2 a3 13.b3 Qc7 14.Bf4 Bb7 15.Qe2 d4 16.
Ng5 Nb4 17.Ne4 Nd5 18.Qh5 f6 19.exf6 Nxf4 20.gxf4 Nxf6 21.Nxf6+ Rxf6 22.
Bxb7 Qxb7 23.Re4 Raf8 24.Qe5 Qc6 25.Rae1 Bd6 26.Qh5 Rxf4 27.Rxe6 Rxf2 28.
R1e4 Bxh2+ 29.Kh1 Rxc2 30.Qd1 Qc7 31.Re1 Rcf2 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "De Meyer, Geert"]
[Black "Haughton, Richard"]
[Result "1/2-1/2"]
[ECO "E18"]
[EventDate "1989.08.??"]
[PlyCount "44"]

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O 6.O-O b6 7.Nc3 Bb7 8.Ne5 Nbd7
9.Qa4 c5 10.Nxd7 Nxd7 11.cxd5 cxd4 12.Qxd4 Bf6 13.Qd2 Bxc3 14.bxc3 Bxd5 
15.Bxd5 exd5 16.Qxd5 Qc8 17.Bf4 Re8 18.Rfe1 Nf6 19.Qb3 Qh3 20.f3 Re6 21.
Rad1 Nh5 22.Bc7 h6 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "Miguel Lago, Victor Placido"]
[Black "Mera Cedeno, Angel"]
[Result "1-0"]
[ECO "D78"]
[EventDate "1989.08.??"]
[PlyCount "85"]

1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.c4 O-O 5.O-O c6 6.d4 d5 7.b3 Bg4 8.Bb2 Nbd7 
9.Nh4 Be6 10.Qc2 Ne8 11.e4 dxe4 12.Bxe4 f5 13.Bg2 Nef6 14.Re1 Bf7 15.Nd2 
Re8 16.Nhf3 e6 17.Re2 Qc7 18.Rae1 h6 19.h4 Ng4 20.c5 e5 21.dxe5 Ndxe5 22.
Nxe5 Nxe5 23.h5 Rad8 24.Bxe5 Rxe5 25.Rxe5 Bxe5 26.Nf3 Bf6 27.Bh3 Bd5 28.
Nd2 Bd4 29.Kf1 Kg7 30.hxg6 f4 31.Ne4 fxg3 32.Nxg3 Rf8 33.Nf5+ Kg8 34.Nxd4 
Qh2 35.Re3 Qh1+ 36.Ke2 Qh2 37.Nf5 Qf4 38.Re7 Qf3+ 39.Ke1 Qh1+ 40.Kd2 Qxh3 
41.Rg7+ Kh8 42.Rh7+ Kg8 43.Ne7# 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "Parodi, Rafael"]
[Black "Hokkanen, Petri"]
[Result "0-1"]
[ECO "E38"]
[EventDate "1989.08.??"]
[PlyCount "42"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5 5.Nf3 Nc6 6.dxc5 Bxc5 7.a3 a5 8.e3 O-O
9.Bd3 Qe7 10.O-O d6 11.Ne2 e5 12.Ng3 g6 13.h3 d5 14.cxd5 Nxd5 15.Rd1 Be6 
16.Ne4 Ba7 17.Neg5 Kg7 18.Nxe6+ fxe6 19.b3 Rac8 20.Bb2 Nd4 21.Bc4 Nxc2 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "Rodrigues, Adriano von Pfuhl"]
[Black "Mamombe, Kudzanai"]
[Result "1/2-1/2"]
[ECO "B50"]
[EventDate "1989.08.??"]
[PlyCount "80"]

1.e4 c5 2.Nf3 d6 3.d3 e6 4.g3 Nc6 5.Bg2 Nf6 6.O-O Be7 7.Nbd2 Qc7 8.Re1 b5 
9.a4 b4 10.Nc4 O-O 11.e5 Nd5 12.exd6 Bxd6 13.Nxd6 Qxd6 14.Ng5 Bb7 15.Qh5 
Nf6 16.Ne4 Nxe4 17.Rxe4 g6 18.Qh6 f5 19.Rh4 Rf7 20.Be3 Ne5 21.Qf4 Bxg2 22.
Kxg2 Qd5+ 23.f3 Rg7 24.d4 g5 25.Qxe5 Qxe5 26.dxe5 gxh4 27.Rd1 hxg3 28.hxg3
Rc7 29.Rd6 Kf7 30.Kf2 Re8 31.Bg5 Rec8 32.Bf6 Rb7 33.Bd8 c4 34.Ke3 Rc5 35.
Kd4 Rd5+ 36.Kxc4 Rxe5 37.Bg5 a5 38.Rd2 Rc7+ 39.Kb3 Rd5 40.Rh2 Kg6 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "Santos, Carlos Pereira"]
[Black "Walsh, Chris"]
[Result "0-1"]
[ECO "E29"]
[EventDate "1989.08.??"]
[PlyCount "48"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.e3 d6 7.Bd3 Nc6 8.Ne2 
O-O 9.O-O e5 10.e4 cxd4 11.cxd4 exd4 12.Bg5 h6 13.Bh4 Ne5 14.Rb1 Qe7 15.f3
Be6 16.Nxd4 Rac8 17.Nxe6 fxe6 18.f4 Nxd3 19.Qxd3 Qc7 20.Rfd1 Qxc4 21.Qxc4 
Rxc4 22.e5 dxe5 23.fxe5 Nd5 24.Rxb7 Rxh4 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "2"]
[White "Zulu, David"]
[Black "Warner, Delisle"]
[Result "1-0"]
[ECO "A31"]
[EventDate "1989.08.??"]
[PlyCount "75"]

1.d4 Nf6 2.c4 a6 3.Nf3 c5 4.e3 g6 5.Nc3 Bg7 6.Be2 O-O 7.O-O b6 8.Qc2 d6 9.
Rd1 Nbd7 10.h3 Rb8 11.Rb1 Ne8 12.b4 cxd4 13.exd4 Bb7 14.Be3 Qc7 15.Nd2 e5 
16.Nb3 Rc8 17.Rbc1 Kh8 18.d5 f5 19.f3 Nef6 20.Bf1 Nh5 21.Ne2 Ndf6 22.Qd2 
f4 23.Bf2 e4 24.Nxf4 exf3 25.Ne6 Qf7 26.Nxf8 Rxf8 27.Re1 Nd7 28.Nd4 fxg2 
29.Bxg2 Nf4 30.Be3 Bh6 31.Ne6 Nxg2 32.Qxg2 Bxe3+ 33.Rxe3 Ne5 34.Rxe5 dxe5 
35.Nxf8 Qxf8 36.Qe4 Qf4 37.Qxf4 exf4 38.Re1 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Dreev, Alexei"]
[Black "Stangl, Markus"]
[Result "1/2-1/2"]
[WhiteElo "2570"]
[BlackElo "2375"]
[ECO "E11"]
[EventDate "1989.08.??"]
[PlyCount "41"]

1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Nbd2 O-O 5.a3 Be7 6.e4 d5 7.Qc2 dxe4 8.Nxe4 
Nbd7 9.Nxf6+ Nxf6 10.Be2 b6 11.Bf4 Bb7 12.O-O c5 13.Rad1 Qc8 14.dxc5 bxc5 
15.Ne5 Rd8 16.Qb3 Ne4 17.Rxd8+ Qxd8 18.Rd1 Qe8 19.Qb5 Rb8 20.Qxe8+ Rxe8 
21.Bf3 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Djurhuus, Rune"]
[Black "Ulybin, Mikhail"]
[Result "1/2-1/2"]
[WhiteElo "2415"]
[BlackElo "2495"]
[ECO "C19"]
[EventDate "1989.08.??"]
[PlyCount "54"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.Nf3 Bd7 8.a4 Qa5
9.Bd2 Nbc6 10.Bb5 c4 11.O-O f6 12.Re1 O-O-O 13.Bc1 fxe5 14.dxe5 Nf5 15.Bg5
Rdf8 16.Bxc6 Bxc6 17.Nd4 h6 18.Be3 Nxd4 19.Bxd4 g5 20.Qb1 Kb8 21.Qb4 Qxb4 
22.cxb4 Be8 23.f3 Bg6 24.c3 Bd3 25.h3 h5 26.Kf2 Rhg8 27.Rh1 Rf7 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Manor, Ilan"]
[Black "Gdanski, Jacek"]
[Result "0-1"]
[WhiteElo "2445"]
[BlackElo "2405"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Kontic, Vladimir"]
[Black "Spasov, Vasil"]
[Result "1/2-1/2"]
[WhiteElo "2395"]
[BlackElo "2430"]
[ECO "B31"]
[EventDate "1989.08.??"]
[PlyCount "22"]

1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.c3 Nf6 6.Re1 O-O 7.d4 cxd4 8.Nxd4 
d5 9.e5 Ne4 10.Nf3 Bf5 11.Nh4 Be6 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Wessman, Richard"]
[Black "Serper, Grigory"]
[Result "1/2-1/2"]
[WhiteElo "2370"]
[BlackElo "2420"]
[ECO "E41"]
[EventDate "1989.08.??"]
[PlyCount "37"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 Nc6 6.Ne2 cxd4 7.exd4 d5 8.cxd5 
Nxd5 9.O-O O-O 10.a3 Bd6 11.Nxd5 exd5 12.Bf4 Be7 13.Qc2 g6 14.Rad1 Bf6 15.
Bb5 Bf5 16.Qd2 Rc8 17.Bxc6 Rxc6 18.Nc3 Re8 19.Rfe1 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Sorensen, Jan"]
[Black "Boissonet, Carlos"]
[Result "1/2-1/2"]
[WhiteElo "2335"]
[BlackElo "2340"]
[ECO "B01"]
[EventDate "1989.08.??"]
[PlyCount "92"]

1.e4 d5 2.exd5 Nf6 3.Bb5+ Bd7 4.Bc4 b5 5.Bb3 Bg4 6.Nf3 Nxd5 7.d4 e6 8.Qd3 
a6 9.Ne5 Bf5 10.Qf3 f6 11.Ng4 Nc6 12.c3 Na5 13.Ne3 Nxe3 14.Bxe3 Nxb3 15.
Qc6+ Kf7 16.axb3 Qd5 17.Qxd5 exd5 18.b4 Bxb1 19.Rxb1 a5 20.Ra1 a4 21.Bf4 
c6 22.b3 g5 23.Be3 f5 24.Bxg5 Re8+ 25.Kf1 axb3 26.g3 Kg6 27.Bf4 Bh6 28.
Bxh6 Kxh6 29.Rb1 f4 30.gxf4 Rhf8 31.Rxb3 Ra8 32.Kg2 Rxf4 33.Rb2 Kh5 34.Re1
Rg8+ 35.Kf1 Rfg4 36.Re3 Rg1+ 37.Ke2 Kh4 38.Re6 R8g6 39.Rxg6 Rxg6 40.Kf3 
Kh3 41.Kf4 Rf6+ 42.Ke5 Rf3 43.Rc2 Kg2 44.Kd6 Rf6+ 45.Ke5 Rf3 46.Kd6 Rf6+ 
1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Koch, Jean-Rene"]
[Black "Huda, Rehan"]
[Result "0-1"]
[WhiteElo "2420"]
[BlackElo "2230"]
[ECO "B89"]
[EventDate "1989.08.??"]
[PlyCount "70"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be3 Nc6 7.Bc4 a6 8.Qe2 
Qc7 9.O-O-O Na5 10.Bd3 b5 11.a3 Bb7 12.g4 Nd7 13.f4 Rc8 14.f5 e5 15.Nf3 d5
16.Nxd5 Bxd5 17.exd5 Bd6 18.Kb1 O-O 19.Nd2 Nc4 20.Bxc4 bxc4 21.Ne4 Rb8 22.
Nxd6 Qxd6 23.Ka2 Rxb2+ 24.Kxb2 Rb8+ 25.Ka2 c3 26.Rb1 Qxd5+ 27.Ka1 Rb2 28.
Rxb2 cxb2+ 29.Kxb2 Qb7+ 30.Kc3 Qxh1 31.Qxa6 Qe1+ 32.Kb2 Qxe3 33.Qc8+ Nf8 
34.c4 Qd2+ 35.Kb3 e4 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Imocha, Laisram"]
[Black "Rodriguez Vila, Andres"]
[Result "0-1"]
[WhiteElo "2315"]
[BlackElo "2295"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Brandner, Stefan"]
[Black "Hernandez, Gilberto"]
[Result "1/2-1/2"]
[WhiteElo "2305"]
[BlackElo "2300"]
[ECO "B47"]
[EventDate "1989.08.??"]
[PlyCount "76"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.f4 a6 7.Be2 Nxd4 8.Qxd4 
b5 9.Be3 Bb7 10.O-O Nf6 11.e5 Nd5 12.Nxd5 Bxd5 13.a4 b4 14.c4 bxc3 15.Rac1
Qb7 16.Rxc3 Bb4 17.Rc2 O-O 18.Bd3 f6 19.Rfc1 Bc6 20.exf6 Rxf6 21.Qe5 Be7 
22.Bd4 Qb4 23.Qe3 Rf7 24.Rc4 Qb7 25.Qh3 h6 26.Qg4 Bf6 27.Bc5 Be7 28.Bxe7 
Rxe7 29.Qg6 Qxb2 30.Be4 Bxe4 31.Rc8+ Re8 32.Qxe8+ Kh7 33.Qg8+ Kg6 34.Qe8+ 
Kh7 35.Qg8+ Kg6 36.f5+ exf5 37.Qe8+ Kh7 38.Qg8+ Kg6 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Rodriguez, Daniel"]
[Black "Moutousis, Konstantinos"]
[Result "0-1"]
[WhiteElo "2235"]
[BlackElo "2330"]
[ECO "C45"]
[EventDate "1989.08.??"]
[PlyCount "130"]

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Nb3 Bb6 6.a4 a6 7.a5 Ba7 8.Nc3 d6
9.Be2 Nge7 10.Bg5 O-O 11.O-O Be6 12.Nd5 f6 13.Bh4 Ng6 14.Bg3 Qd7 15.Qd2 
Kh8 16.Rad1 f5 17.exf5 Rxf5 18.c4 Rf7 19.Qc3 Nce7 20.Bf3 Nxd5 21.Bxd5 Bxd5
22.Rxd5 Raf8 23.c5 Qe6 24.Rd2 dxc5 25.Nxc5 Qc6 26.Nd7 Qxc3 27.bxc3 Rc8 28.
Re1 h6 29.h4 Rf5 30.Re6 Kh7 31.Ne5 Nf8 32.Re7 Bc5 33.Rf7 Rxf7 34.Nxf7 b6 
35.axb6 cxb6 36.h5 a5 37.c4 a4 38.Ne5 a3 39.Nd7 Ne6 40.Nxc5 Nxc5 41.Be5 
Rd8 42.Ra2 Rd1+ 43.Kh2 Rd3 44.f3 g5 45.Kg3 Rd8 46.Kg4 Ne6 47.Kf5 Kg8 48.
Re2 Kf7 49.Bf6 Rd6 50.Bc3 Rd4 51.Re4 a2 52.Bb2 Rd1 53.f4 Nd4+ 54.Ke5 a1=Q 
55.Bxa1 Rxa1 56.fxg5 hxg5 57.Kd5 Ne6 58.g4 Rd1+ 59.Ke5 Rd4 60.h6 Rxe4+ 61.
Kxe4 Nd4 62.Kd5 Nb3 63.Kc6 Kg6 64.Kb5 Kxh6 65.Ka4 Nd4 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Hokkanen, Petri"]
[Black "Polgar, Zsuzsa"]
[Result "0-1"]
[BlackElo "2520"]
[ECO "A04"]
[EventDate "1989.08.??"]
[PlyCount "49"]

1.Nf3 f5 2.b3 Nf6 3.Bb2 d6 4.d4 g6 5.g3 Bg7 6.Bg2 O-O 7.O-O c6 8.Nbd2 Na6 
9.c4 Qe8 10.Rc1 h6 11.Qc2 g5 12.Rfe1 Qh5 13.a3 Nc7 14.d5 cxd5 15.c5 Nce8 
16.e3 Bd7 17.b4 g4 18.Nd4 dxc5 19.bxc5 Ne4 20.N2b3 Rc8 21.Qd3 Qf7 22.Red1 
Ba4 23.Ba1 Nc7 24.Ne2 e5 25.f3 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Shirov, Alexei"]
[Black "Zulu, David"]
[Result "1-0"]
[WhiteElo "2495"]
[ECO "E97"]
[EventDate "1989.08.??"]
[PlyCount "45"]

1.Nf3 Nf6 2.d4 g6 3.c4 Bg7 4.Nc3 O-O 5.e4 d6 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 
9.Nd2 Nd7 10.b4 f5 11.c5 Nf6 12.f3 Bd7 13.Nc4 Ne8 14.a4 a6 15.Be3 Nc8 16.
Na5 Rb8 17.Qb3 f4 18.Bf2 Nf6 19.c6 Be8 20.cxb7 Bd7 21.Nc6 Qe8 22.Nxb8 Nb6 
23.Nxa6 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Ruxton, Keith"]
[Black "Miguel Lago, Victor Placido"]
[Result "1/2-1/2"]
[WhiteElo "2325"]
[ECO "B13"]
[EventDate "1989.08.??"]
[PlyCount "83"]

1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 Nc6 6.Nf3 Bg4 7.cxd5 Nxd5 8.Qb3
Bxf3 9.gxf3 e6 10.Qxb7 Nxd4 11.Bb5+ Nxb5 12.Qc6+ Ke7 13.Qxb5 Qd7 14.Nxd5+ 
Qxd5 15.Qxd5 exd5 16.O-O Ke6 17.Be3 Bb4 18.Rac1 Rhd8 19.Rfd1 Rd7 20.Rc6+ 
Rd6 21.Rc7 Ra6 22.a3 Bd6 23.Rb7 Rb8 24.Rxb8 Bxb8 25.f4 Rc6 26.Rd3 a6 27.
Rb3 Bc7 28.Kg2 Rc4 29.Rb7 a5 30.Kf3 a4 31.Ra7 d4 32.Bxd4 Bxf4 33.Ra6+ Kf5 
34.Bxg7 Bxh2 35.Rf6+ Kg5 36.Rxf7 Rf4+ 37.Rxf4 Bxf4 38.Bh6+ Kxh6 39.Kxf4 
Kg6 40.Kg4 Kf6 41.Kh5 Kg7 42.Kg5 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Martinez Echezarreta, Arturo"]
[Black "Van Wely, Loek"]
[Result "0-1"]
[BlackElo "2320"]
[ECO "E99"]
[EventDate "1989.08.??"]
[PlyCount "72"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Nf3 e5 7.O-O Nc6 8.d5 Ne7 
9.Ne1 Nd7 10.Nd3 f5 11.f3 c5 12.g4 Kh8 13.Be3 Ng8 14.b4 Bh6 15.Bf2 cxb4 
16.Nxb4 fxg4 17.fxg4 Rxf2 18.Rxf2 Be3 19.Nc2 Bxf2+ 20.Kxf2 Qh4+ 21.Kg2 Nc5
22.Bf3 Nf6 23.h3 h5 24.Ne3 hxg4 25.hxg4 Qg5 26.Qe2 Nh5 27.Rh1 Kg8 28.Qd2 
Bd7 29.Kf2 Rf8 30.Kg2 Qf4 31.Rh3 Rf7 32.Ne2 Qg5 33.Nf1 Nxe4 34.Rxh5 Qxd2 
35.Nxd2 Nxd2 36.Rh3 e4 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Chung, Ronnie"]
[Black "Hsu Li Yang"]
[Result "0-1"]
[BlackElo "2315"]
[ECO "B01"]
[EventDate "1989.08.??"]
[PlyCount "106"]

1.e4 d5 2.exd5 Nf6 3.c4 e6 4.dxe6 Bxe6 5.d4 Bb4+ 6.Bd2 Bxd2+ 7.Qxd2 Qe7 8.
Qe2 Nc6 9.Nf3 O-O-O 10.Nc3 Rxd4 11.Nd2 Rhd8 12.O-O-O Kb8 13.h3 Qc5 14.g4 
Qg5 15.Qe3 Qf4 16.Ne2 Qxe3 17.fxe3 Rd3 18.Nd4 Rxe3 19.N2b3 Nxd4 20.Nxd4 
Kc8 21.Nxe6 Rxe6 22.Bd3 Ne4 23.Rhf1 f6 24.Rf4 Ng3 25.Rf2 Red6 26.Rfd2 h6 
27.c5 Rd4 28.Kc2 c6 29.b4 Kc7 30.Bg6 Ne2 31.Bf5 Rxd2+ 32.Rxd2 Nd4+ 33.Kc3 
Nxf5 34.Rxd8 Kxd8 35.gxf5 Kc7 36.Kd4 Kd7 37.Ke4 g5 38.a4 Ke7 39.b5 Kd7 40.
Kd4 cxb5 41.axb5 h5 42.Ke4 a5 43.bxa6 bxa6 44.Kd5 g4 45.c6+ Kc7 46.hxg4 
hxg4 47.Ke6 g3 48.Kxf6 g2 49.Ke7 g1=Q 50.f6 Qe3+ 51.Kf8 a5 52.Kg8 a4 53.f7
a3 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Cadena, Juan"]
[Black "Melgosa, Marcio"]
[Result "1-0"]
[BlackElo "2300"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Vasquez Schroder, Rodrigo"]
[Black "Rios Parra, Alejandro"]
[Result "1-0"]
[WhiteElo "2300"]
[ECO "B70"]
[EventDate "1989.08.??"]
[PlyCount "78"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be2 Bg7 7.O-O O-O 8.Nb3 
a5 9.a4 Nc6 10.Be3 Be6 11.f4 Rc8 12.Bf3 Bc4 13.Rf2 Qc7 14.Nb5 Qb8 15.Rd2 
b6 16.c3 Ne8 17.Na3 Ba6 18.Be2 Nc7 19.Qf1 Bxe2 20.Qxe2 Ne6 21.Nc4 Nc5 22.
Bxc5 dxc5 23.e5 Rfd8 24.Rad1 Rxd2 25.Rxd2 g5 26.g3 gxf4 27.gxf4 Kh8 28.Qe4
Qc7 29.Qd5 Rg8 30.Rg2 e6 31.Qe4 Ne7 32.Nd6 Ng6 33.Nd2 Bf8 34.Ne8 Qd8 35.
Nf6 Rg7 36.h4 Be7 37.h5 Nf8 38.Rxg7 Bxf6 39.exf6 Qxf6 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Martin, Benjamin"]
[Black "Castillo Melendez, Otto Rene"]
[Result "1/2-1/2"]
[WhiteElo "2280"]
[ECO "E06"]
[EventDate "1989.08.??"]
[PlyCount "80"]

1.d4 d5 2.c4 e6 3.g3 Nf6 4.Bg2 Be7 5.Nf3 O-O 6.Qc2 b6 7.O-O Bb7 8.cxd5 
exd5 9.Nc3 c5 10.Rd1 Nbd7 11.b3 Rc8 12.Bb2 a6 13.Qf5 Qc7 14.Rac1 Rfd8 15.
e3 Qb8 16.dxc5 bxc5 17.Ng5 h6 18.Nf3 Bf8 19.Ne2 Re8 20.Qf4 Bd6 21.Qh4 d4 
22.Nf4 dxe3 23.fxe3 Rxe3 24.Rf1 Rce8 25.Nh5 Nxh5 26.Qxh5 R8e7 27.Qg4 Ne5 
28.Bxe5 Bxe5 29.Nxe5 R3xe5 30.Bxb7 Qxb7 31.Rc2 Qb6 32.Rcf2 Qe6 33.Qxe6 
R5xe6 34.Rc2 Re2 35.Rxc5 Rxa2 36.Rf2 Re1+ 37.Kg2 Rxf2+ 38.Kxf2 Rb1 39.Ra5 
Rxb3 40.Rxa6 Rb2+ 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Warner, Delisle"]
[Black "Santos, Carlos Pereira"]
[Result "0-1"]
[WhiteElo "2280"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Georges, Sascha"]
[Black "Dao Thien Hai"]
[Result "1-0"]
[WhiteElo "2220"]
[ECO "D34"]
[EventDate "1989.08.??"]
[PlyCount "78"]

1.c4 c5 2.Nc3 e6 3.Nf3 Nf6 4.g3 Nc6 5.Bg2 d5 6.cxd5 exd5 7.d4 Be7 8.O-O 
O-O 9.Bg5 Be6 10.Rc1 cxd4 11.Nxd4 Nxd4 12.Qxd4 h6 13.Bf4 Qa5 14.Qd2 Rad8 
15.Rfd1 Rd7 16.e3 Rfd8 17.Ne2 Qxa2 18.Ra1 Qb3 19.Rxa7 Ne4 20.Qc1 Bf6 21.
Nd4 Qb6 22.Nxe6 fxe6 23.Ra3 e5 24.Rad3 Nc5 25.Rxd5 exf4 26.gxf4 Rxd5 27.
Rxd5 Rxd5 28.Bxd5+ Kh8 29.Qc2 Qd6 30.Qf5 Qd7 31.Qh5 Bxb2 32.Bf3 Qe7 33.Qf5
b6 34.Qc8+ Kh7 35.Bd5 Qd7 36.Bg8+ Kg6 37.f5+ Kg5 38.h4+ Kg4 39.Qa8 Qxf5 
1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Apaza, Henry"]
[Black "Segovia, Javier"]
[Result "1-0"]
[ECO "A67"]
[EventDate "1989.08.??"]
[PlyCount "47"]

1.c4 Nf6 2.d4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Bb5+ Nfd7
9.a4 O-O 10.Nf3 a6 11.Bd3 Qc7 12.O-O Re8 13.f5 Ra7 14.h4 b5 15.h5 c4 16.
fxg6 cxd3 17.h6 Bf6 18.gxf7+ Kxf7 19.Ng5+ Kg8 20.Qxd3 Nc5 21.Qg3 Bxg5 22.
Bxg5 Qd7 23.Rf4 b4 24.Be7+ 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Haughton, Richard"]
[Black "Rodrigues, Adriano von Pfuhl"]
[Result "1/2-1/2"]
[ECO "A58"]
[EventDate "1989.08.??"]
[PlyCount "88"]

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 d6 7.g3 g6 8.Nf3 Bg7 
9.Bg2 O-O 10.O-O Nbd7 11.Qc2 Qc7 12.Rd1 Rfb8 13.h3 Nb6 14.e4 Nfd7 15.b3 
Nc8 16.Rb1 Na7 17.Bg5 Kf8 18.Qd2 Qa5 19.Bh6 Nb5 20.Nxb5 Bxb5 21.Qb2 f6 22.
Bxg7+ Kxg7 23.Rd2 Qa3 24.Ng5 Nf8 25.Ne6+ Nxe6 26.dxe6 Qxb2 27.Rbxb2 Ra3 
28.f4 Ba6 29.Bf1 Rb4 30.Bxa6 Rxa6 31.Re2 f5 32.exf5 gxf5 33.Rbd2 Kf6 34.
Kf2 h5 35.Rc2 Ra3 36.Re3 Ra5 37.Kf3 Ra8 38.Ree2 Rg8 39.Rc3 Ra8 40.Rcc2 Rg8
41.Re3 Ra8 42.Rh2 Rh8 43.a3 Rb6 44.Rh1 Rhb8 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Mamombe, Kudzanai"]
[Black "De Meyer, Geert"]
[Result "1-0"]
[ECO "A08"]
[EventDate "1989.08.??"]
[PlyCount "47"]

1.e4 e6 2.d3 d5 3.Nd2 Nf6 4.Ngf3 c5 5.g3 Nc6 6.Bg2 Be7 7.O-O O-O 8.e5 Nd7 
9.Re1 b5 10.Nf1 a5 11.h4 b4 12.Bf4 Ba6 13.N1h2 a4 14.h5 Bb5 15.h6 g6 16.
Ng4 Ra7 17.Qd2 c4 18.d4 c3 19.bxc3 bxc3 20.Qxc3 Bb4 21.Qe3 Bxe1 22.Rxe1 
Nb4 23.Qe2 Qa5 24.Bg5 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Mera Cedeno, Angel"]
[Black "Parodi, Rafael"]
[Result "1-0"]
[ECO "D52"]
[EventDate "1989.08.??"]
[PlyCount "81"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 c6 5.Bg5 Nbd7 6.e3 Qa5 7.Nd2 Bb4 8.Qc2 
dxc4 9.Bxf6 Nxf6 10.Nxc4 Qg5 11.a3 Bxc3+ 12.bxc3 O-O 13.Ne5 Nd7 14.h4 Qe7 
15.Bd3 h6 16.Nf3 e5 17.g4 c5 18.g5 h5 19.d5 Nb6 20.c4 Re8 21.Nd2 Bd7 22.
Rg1 Ba4 23.Qb1 Red8 24.g6 Rf8 25.Rg5 Qf6 26.Bf5 Bd7 27.Ne4 Qd8 28.Bxd7 
Qxd7 29.Nxc5 Qh3 30.Qe4 Rac8 31.Rg3 Qh2 32.Ke2 fxg6 33.Rg2 Qh3 34.Qxg6 Rf7
35.Ne4 Qf5 36.Nd6 Rf6 37.Qxf6 Rf8 38.Qe6+ Qxe6 39.dxe6 Nc8 40.Nxc8 Rxc8 
41.Rag1 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "3"]
[White "Walsh, Chris"]
[Black "Torres Baldeon, Jean Pierre"]
[Result "1/2-1/2"]
[ECO "C75"]
[EventDate "1989.08.??"]
[PlyCount "88"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.O-O Bd7 6.c3 Nge7 7.d4 Ng6 8.dxe5 
dxe5 9.Qd5 Bd6 10.Bg5 Nge7 11.Qd3 h6 12.Bxe7 Nxe7 13.Bxd7+ Qxd7 14.Nbd2 
Ng6 15.Nc4 O-O-O 16.Nxd6+ Qxd6 17.Qxd6 Rxd6 18.Rfd1 Rhd8 19.Rxd6 Rxd6 20.
g3 Rd3 21.Kg2 a5 22.a4 Kd7 23.Rb1 b6 24.Ne1 Rd2 25.Kf3 Ke6 26.Ke3 Rd8 27.
Ke2 Ne7 28.Rd1 Rxd1 29.Kxd1 Nc8 30.Kd2 Nd6 31.Kd3 g6 32.Nc2 h5 33.Ne3 c6 
34.Nc4 Nxc4 35.Kxc4 Kd7 36.b4 Kd6 37.f4 h4 38.Kd3 hxg3 39.hxg3 exf4 40.
gxf4 f6 41.Ke3 Ke6 42.Kf3 Kd7 43.Kg4 Kd6 44.bxa5 bxa5 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Moutousis, Konstantinos"]
[Black "Dreev, Alexei"]
[Result "0-1"]
[WhiteElo "2330"]
[BlackElo "2570"]
[ECO "C60"]
[EventDate "1989.08.??"]
[PlyCount "58"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nge7 4.d4 exd4 5.Nxd4 g6 6.Nc3 Bg7 7.Be3 O-O 8.O-O
d5 9.exd5 Nxd5 10.Nxd5 Qxd5 11.c4 Qe4 12.Bxc6 bxc6 13.Qb1 Qh4 14.Rd1 c5 
15.Nf3 Qxc4 16.Rc1 Qa6 17.Rxc5 Rb8 18.Nd4 Rb4 19.Nb3 Qb7 20.Na5 Qa6 21.Qf1
Rxb2 22.Nc4 Rb5 23.Rxc7 Bxa1 24.Qxa1 Bf5 25.Nd2 Rd8 26.g4 Rb1+ 27.Nxb1 
Rd1+ 28.Kg2 Qf1+ 29.Kg3 Qg1+ 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Ulybin, Mikhail"]
[Black "Wessman, Richard"]
[Result "1/2-1/2"]
[WhiteElo "2495"]
[BlackElo "2370"]
[ECO "C88"]
[EventDate "1989.08.??"]
[PlyCount "70"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.h3 d5 
9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 Nb6 12.c3 Bf6 13.Re1 c5 14.d3 Bb7 15.Be3 
Rc8 16.Qe2 a5 17.a3 a4 18.Ba2 b4 19.axb4 cxb4 20.cxb4 Nd5 21.Bxd5 Qxd5 22.
Qf1 Qb3 23.Nd2 Qxb4 24.Nc4 Bc6 25.Bd2 Qb8 26.Bc3 Qf4 27.Bxf6 Qxf6 28.Re5 
Bxg2 29.Qxg2 Rxc4 30.dxc4 Qxe5 31.Qd5 Qxb2 32.Rxa4 Qb1+ 33.Kg2 Qg6+ 34.Kh1
Qb1+ 35.Kg2 Qg6+ 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Gdanski, Jacek"]
[Black "Djurhuus, Rune"]
[Result "1-0"]
[WhiteElo "2405"]
[BlackElo "2415"]
[ECO "C17"]
[EventDate "1989.08.??"]
[PlyCount "85"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Ba5 6.b4 cxd4 7.Nb5 Bc7 8.Nf3 Nc6 
9.Nxc7+ Qxc7 10.Bf4 Nf6 11.exf6 Qxf4 12.fxg7 Rg8 13.g3 Qf6 14.b5 Ne7 15.
Nxd4 e5 16.Nb3 Bf5 17.Bg2 Rc8 18.Rc1 Qg6 19.Na1 Qb6 20.O-O Qxb5 21.Re1 f6 
22.Rb1 Qc6 23.f4 e4 24.Nb3 Qxc2 25.Qd4 Kf7 26.Qxa7 Ra8 27.Qb6 Qc6 28.Qf2 
Rxa3 29.Nd4 Qa6 30.Nxf5 Nxf5 31.Bh3 Ne7 32.Rb6 Qa5 33.Rc1 Ra1 34.Rxa1 
Qxa1+ 35.Kg2 Kxg7 36.Rxb7 Qa3 37.Be6 Rd8 38.Qe2 Kh8 39.Qh5 Rf8 40.Kh3 Qf3 
41.Qxf3 exf3 42.Rxe7 Rd8 43.Rd7 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Polgar, Zsuzsa"]
[Black "Vasquez Schroder, Rodrigo"]
[Result "1-0"]
[WhiteElo "2520"]
[BlackElo "2300"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Serper, Grigory"]
[Black "Kontic, Vladimir"]
[Result "1/2-1/2"]
[WhiteElo "2420"]
[BlackElo "2395"]
[ECO "A10"]
[EventDate "1989.08.??"]
[PlyCount "58"]

1.c4 f5 2.g3 Nf6 3.Bg2 g6 4.Nc3 Bg7 5.d3 Nc6 6.e3 O-O 7.Nge2 e5 8.O-O d6 
9.Rb1 a5 10.b3 g5 11.f4 h6 12.Bb2 Qe8 13.Qd2 Bd7 14.Rbc1 exf4 15.exf4 Ng4 
16.Nd5 Bxb2 17.Qxb2 Nb4 18.Qd2 c6 19.Nc7 Qe3+ 20.Qxe3 Nxe3 21.Nxa8 Rxa8 
22.Rf3 Re8 23.a3 Nxd3 24.Rc3 Nxg2 25.Rfxd3 Rxe2 26.Kf1 Rb2 27.Rxd6 Be8 28.
Re6 Bh5 29.Rxh6 Bg4 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Spasov, Vasil"]
[Black "Stangl, Markus"]
[Result "1/2-1/2"]
[WhiteElo "2430"]
[BlackElo "2375"]
[ECO "B93"]
[EventDate "1989.08.??"]
[PlyCount "88"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.f4 e5 7.Nf3 Nbd7 8.a4 Be7
9.Bd3 O-O 10.O-O exf4 11.Kh1 Nc5 12.Bxf4 Bd7 13.Nd4 Qb6 14.Qd2 Nxd3 15.
Qxd3 Rac8 16.b3 Qc5 17.Bd2 Rfe8 18.Nf5 Qe5 19.Rae1 Bf8 20.Nd5 Nxd5 21.exd5
Bxf5 22.Rxf5 Qb2 23.Rxe8 Rxe8 24.h3 g6 25.Rf1 Rc8 26.c4 Re8 27.Bc3 Qe2 28.
Qxe2 Rxe2 29.Re1 Rxe1+ 30.Bxe1 Bg7 31.g4 Be5 32.Kg2 f5 33.gxf5 gxf5 34.b4 
Kf7 35.c5 dxc5 36.bxc5 Ke7 37.Bg3 Bd4 38.Bf2 Be5 39.Kf3 Kd7 40.Be3 Bh2 41.
Bd4 Kc7 42.Be3 Kd7 43.Bf2 Be5 44.Bg1 Kc7 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Rodriguez Vila, Andres"]
[Black "Manor, Ilan"]
[Result "1-0"]
[WhiteElo "2295"]
[BlackElo "2445"]
[ECO "B33"]
[EventDate "1989.08.??"]
[PlyCount "85"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Nd5 Nxd5 8.
exd5 Ne7 9.c4 Nf5 10.Bd3 g6 11.O-O a6 12.Nc3 Bg7 13.Qa4+ Bd7 14.Qb4 O-O 
15.Ne4 a5 16.Qa3 Re8 17.Bg5 f6 18.Be3 Bf8 19.Bb6 Qxb6 20.Nxf6+ Kf7 21.Nxd7
Qb4 22.Bxf5 gxf5 23.Qh3 Bg7 24.Qxh7 f4 25.a3 Qxb2 26.Rab1 Qd4 27.Rxb7 Re7 
28.Qh5+ Kg8 29.Qg5 Kf7 30.Qh5+ Kg8 31.Rd1 Qc3 32.Rdb1 Rd8 33.Qg6 e4 34.
Qxd6 Ree8 35.Qxf4 e3 36.fxe3 Rxe3 37.Rf1 Re4 38.Qf5 Qxc4 39.h3 Qc8 40.Nf6+
Bxf6 41.Qg6+ Bg7 42.Rff7 Qc5+ 43.Kh2 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Hernandez, Gilberto"]
[Black "Ruxton, Keith"]
[Result "1-0"]
[WhiteElo "2300"]
[BlackElo "2325"]
[ECO "B19"]
[EventDate "1989.08.??"]
[PlyCount "79"]

1.e4 c6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.h4 h6 7.Nf3 Nd7 8.h5 Bh7
9.Bd3 Bxd3 10.Qxd3 e6 11.Bd2 Ngf6 12.O-O-O Be7 13.Kb1 a5 14.Ne4 a4 15.
Nxf6+ Nxf6 16.Ne5 a3 17.b3 Qd5 18.f3 Rd8 19.Bc3 Qb5 20.Ba1 Qxd3 21.Rxd3 
O-O 22.c4 Rc8 23.g4 Rfd8 24.Rhd1 b5 25.Bc3 Nd7 26.Ba5 Nxe5 27.dxe5 Rxd3 
28.Rxd3 b4 29.Rd7 Kf8 30.Rb7 c5 31.Bc7 Ke8 32.Kc2 f6 33.f4 Bf8 34.exf6 
gxf6 35.Ra7 Be7 36.f5 e5 37.g5 fxg5 38.Bxe5 Rc6 39.Kd3 Bf6 40.Ke4 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Van Wely, Loek"]
[Black "Huda, Rehan"]
[Result "1-0"]
[WhiteElo "2320"]
[BlackElo "2230"]
[ECO "A57"]
[EventDate "1989.08.??"]
[PlyCount "73"]

1.d4 Nf6 2.c4 c5 3.d5 b5 4.Nf3 b4 5.Nbd2 d6 6.g3 e5 7.dxe6 Bxe6 8.Bg2 Nc6 
9.Ng5 Qd7 10.Nxe6 fxe6 11.O-O Be7 12.e4 e5 13.f4 exf4 14.gxf4 O-O 15.Nf3 
Rae8 16.Ng5 Nd8 17.Bh3 Qc7 18.Qd3 h6 19.Nf3 Qb7 20.e5 Ne4 21.Re1 Ng5 22.
Nxg5 hxg5 23.Bg2 Qc8 24.Bd5+ Nf7 25.e6 Nh6 26.fxg5 Ng4 27.Qh3 Nf2 28.Qh5 
Rf5 29.Rf1 Ref8 30.Rxf2 R8f6 31.Rxf5 Rxf5 32.Qh3 g6 33.Qh6 Qf8 34.Qxg6+ 
Kh8 35.Qh6+ Qxh6 36.gxh6 Re5 37.Bf4 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Miguel Lago, Victor Placido"]
[Black "Shirov, Alexei"]
[Result "0-1"]
[BlackElo "2495"]
[ECO "A07"]
[EventDate "1989.08.??"]
[PlyCount "71"]

1.Nf3 d5 2.g3 Bg4 3.Bg2 Nd7 4.d4 e6 5.O-O Bd6 6.c4 c6 7.b3 Bxf3 8.exf3 Ne7
9.f4 O-O 10.Bb2 Qa5 11.c5 Bc7 12.Re1 b6 13.b4 Qa6 14.a4 Qb7 15.Bc3 a5 16.
cxb6 Bxb6 17.Na3 Nf5 18.b5 c5 19.dxc5 Bxc5 20.Qc2 Rfc8 21.Re2 Nb6 22.Bxa5 
Nxa4 23.Bb4 Qb6 24.Bxc5 Nxc5 25.Qb2 Nd3 26.Qd2 Qd4 27.Qd1 Nxf4 28.gxf4 
Rxa3 29.Qxd4 Nxd4 30.Rxa3 Nxe2+ 31.Kf1 Nxf4 32.Ra1 Kf8 33.b6 Rb8 34.Ra7 
Rxb6 35.f3 Rb1+ 36.Kf2 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Torres Baldeon, Jean Pierre"]
[Black "Koch, Jean-Rene"]
[Result "0-1"]
[BlackElo "2390"]
[ECO "B70"]
[EventDate "1989.08.??"]
[PlyCount "116"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.g3 Nc6 7.Bg2 Nxd4 8.Qxd4 
Bg7 9.O-O O-O 10.Qb4 Qc7 11.a4 a5 12.Qb3 Be6 13.Nd5 Nxd5 14.exd5 Bf5 15.c3
Bd3 16.Re1 Bf6 17.Be3 Bc4 18.Qd1 Rfe8 19.Rb1 Ba6 20.Bd4 Bxd4 21.Qxd4 b5 
22.axb5 Bxb5 23.Re4 Rab8 24.Qe3 Ba6 25.Bh3 Bc8 26.Bxc8 Rbxc8 27.Re1 Qb7 
28.Qd2 Rc5 29.c4 Rb8 30.R1e2 Qb3 31.Qf4 Rxc4 32.Kg2 Rxe4 33.Qxe4 Rb4 34.
Qxe7 Qxd5+ 35.f3 Rd4 36.Qf6 Rd2 37.Rxd2 Qxd2+ 38.Kh3 h5 39.g4 hxg4+ 40.
fxg4 Qe3+ 41.Kg2 Qe2+ 42.Kh3 Qe5 43.Qd8+ Kg7 44.Qb6 Qc5 45.Qb3 d5 46.Qg3 
d4 47.g5 Qf5+ 48.Kh4 Qe4+ 49.Qg4 Qe3 50.Qg3 Qe2 51.Qf4 Qxb2 52.Qf6+ Kg8 
53.h3 Qb8 54.Kg4 Qc8+ 55.Kg3 Qd7 56.Qf4 d3 57.Qd2 a4 58.h4 a3 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Boissonet, Carlos"]
[Black "Apaza, Henry"]
[Result "1-0"]
[WhiteElo "2340"]
[ECO "E61"]
[EventDate "1989.08.??"]
[PlyCount "65"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 d6 5.Bf4 O-O 6.e3 Bf5 7.Bd3 Nbd7 8.O-O 
Qe8 9.Nh4 e5 10.Nxf5 gxf5 11.Bg3 a6 12.dxe5 dxe5 13.Qc2 Qe6 14.Rfd1 c6 15.
Rd2 b5 16.Rad1 b4 17.Na4 f4 18.exf4 exf4 19.Bxf4 Rfe8 20.Bf1 Qg4 21.Bg3 
Ne5 22.Nb6 Rab8 23.c5 h5 24.f4 Ng6 25.Be2 Rxe2 26.Rxe2 h4 27.f5 hxg3 28.h3
Qf4 29.fxg6 Ng4 30.gxf7+ Kxf7 31.Qb3+ Kg6 32.Qd3+ Kf7 33.hxg4 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Cadena, Juan"]
[Black "Sorensen, Jan"]
[Result "0-1"]
[BlackElo "2335"]
[ECO "C01"]
[EventDate "1989.08.??"]
[PlyCount "106"]

1.e4 e6 2.d4 d5 3.exd5 exd5 4.Nf3 Bd6 5.Bd3 Nc6 6.O-O Bg4 7.c3 Nge7 8.Bg5 
f6 9.Bh4 Qd7 10.a4 O-O-O 11.Nbd2 Nf5 12.Qc2 Nce7 13.b4 g5 14.Bg3 Bxg3 15.
hxg3 h5 16.Nb3 b6 17.Rfb1 Rdg8 18.a5 Bxf3 19.axb6 cxb6 20.gxf3 Nh4 21.Nd2 
g4 22.fxg4 Rxg4 23.Qa4 Qxa4 24.Rxa4 Kb8 25.Rba1 Nc8 26.Kf1 Ng6 27.Bf5 Rg5 
28.Bh3 Nge7 29.Nf3 Rg7 30.Nh4 Nc6 31.Be6 Rd8 32.Nf5 Rc7 33.Ne3 N6e7 34.
R4a3 Nd6 35.Rb3 Ne4 36.Raa3 Nd2+ 37.Ke2 Nxb3 38.Rxb3 Rc6 39.Bf7 Rh8 40.
Bxd5 Nxd5 41.Nxd5 h4 42.gxh4 Rxh4 43.Ra3 b5 44.Kd3 Kb7 45.Ne3 Ra6 46.c4 
bxc4+ 47.Nxc4 Rh3+ 48.Ne3 f5 49.f4 Re6 50.Kd2 Re4 51.Rd3 Rxf4 52.d5 Rf2+ 
53.Kc3 Rff3 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Castillo Melendez, Otto Rene"]
[Black "Imocha, Laisram"]
[Result "0-1"]
[BlackElo "2315"]
[ECO "C11"]
[EventDate "1989.08.??"]
[PlyCount "71"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 dxe4 5.Bxf6 gxf6 6.Nxe4 f5 7.Nc3 Bg7 8.Nf3
O-O 9.Qd2 c5 10.O-O-O Qa5 11.Bc4 Qb4 12.Bb3 Nc6 13.a3 Qa5 14.Qg5 Kh8 15.
Ne2 cxd4 16.Nexd4 Nxd4 17.Nxd4 Qc5 18.Nf3 a5 19.Qh5 Kg8 20.g4 a4 21.Ba2 
Ra5 22.gxf5 Qxf5 23.Qxf5 Rxf5 24.Rd3 b6 25.Rg1 Ba6 26.c4 Rc8 27.Nh4 Bxc4 
28.Bxc4 Rf4 29.Kb1 Rxf2 30.Rxg7+ Kxg7 31.Rg3+ Kf8 32.Bd3 Rxh2 33.Nf3 Rh1+ 
34.Ng1 f5 35.Ka2 Rc1 36.Bb5 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Hsu Li Yang"]
[Black "Mamombe, Kudzanai"]
[Result "1-0"]
[WhiteElo "2315"]
[ECO "E69"]
[EventDate "1989.08.??"]
[PlyCount "67"]

1.Nf3 Nf6 2.c4 g6 3.Nc3 Bg7 4.g3 O-O 5.Bg2 d6 6.O-O c6 7.d4 Nbd7 8.h3 e5 
9.e4 Qb6 10.Re1 Nh5 11.d5 c5 12.Rb1 a6 13.Be3 Qd8 14.a3 Qe8 15.b4 f5 16.
exf5 gxf5 17.Ng5 e4 18.Ncxe4 fxe4 19.Ne6 Ndf6 20.Nc7 Qg6 21.Nxa8 Bxh3 22.
Bxh3 Nxg3 23.Bg2 Nf5 24.Bf4 Nh5 25.Rxe4 Nd4 26.Bg3 Nxg3 27.fxg3 Qxg3 28.
Rg4 Qe3+ 29.Kh2 Kh8 30.Qe1 Be5+ 31.Kh1 Ne2 32.bxc5 Bc3 33.Qd1 Ng3+ 34.Kh2 
1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Walsh, Chris"]
[Black "Brandner, Stefan"]
[Result "1/2-1/2"]
[BlackElo "2305"]
[ECO "C81"]
[EventDate "1989.08.??"]
[PlyCount "74"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 
Be6 9.Qe2 Be7 10.Rd1 O-O 11.c4 bxc4 12.Bxc4 dxc4 13.Rxd8 Rfxd8 14.Nbd2 Nc5
15.Nf1 Bg4 16.Be3 Nd3 17.h3 Bxf3 18.Qxf3 Ncxe5 19.Qe4 Bf6 20.Ng3 g6 21.Rf1
Re8 22.Bh6 Rad8 23.Qb7 Nc5 24.Qxc7 Ned3 25.f4 Ne4 26.Nxe4 Rxe4 27.Qb7 Rde8
28.f5 Bd4+ 29.Kh2 Be5+ 30.Kg1 Bd4+ 31.Kh2 Be5+ 32.Kg1 gxf5 33.Qd7 Bd4+ 34.
Kh2 Be5+ 35.Kg1 Bd4+ 36.Kh2 Be5+ 37.Kg1 Bd4+ 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Santos, Carlos Pereira"]
[Black "Martin, Benjamin"]
[Result "1-0"]
[BlackElo "2280"]
[ECO "E29"]
[EventDate "1989.08.??"]
[PlyCount "77"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.e3 d6 7.Bd3 Nc6 8.Ne2 
O-O 9.O-O b6 10.e4 Ne8 11.f4 f5 12.d5 Ne7 13.exf5 exf5 14.Ng3 Nf6 15.Qc2 
Ng4 16.Bd2 Bd7 17.Rfe1 Nh6 18.Re2 Rf7 19.Nf1 Qc7 20.h3 Ng6 21.Nh2 Raf8 22.
Rae1 Rf6 23.Nf3 Qc8 24.Ne5 Nf7 25.Nxd7 Qxd7 26.Qd1 Nd8 27.Bc2 a6 28.Qb1 
Qc7 29.Ba4 R6f7 30.Be8 Re7 31.Bxg6 Rxe2 32.Bxh7+ Kxh7 33.Rxe2 g6 34.Be1 
Nb7 35.Bh4 Rf7 36.Qe1 Qd7 37.Re8 Na5 38.Bf6 Rxf6 39.Qh4+ 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Segovia, Javier"]
[Black "Rodriguez, Daniel"]
[Result "0-1"]
[BlackElo "2235"]
[ECO "B22"]
[EventDate "1989.08.??"]
[PlyCount "68"]

1.e4 c5 2.c3 d5 3.exd5 Qxd5 4.d4 Nc6 5.Nf3 Bg4 6.Be2 cxd4 7.cxd4 e6 8.O-O 
Nf6 9.Nc3 Qa5 10.h3 Bh5 11.Qb3 Qb4 12.Rd1 Qxb3 13.axb3 Nd5 14.Nxd5 exd5 
15.g4 Bg6 16.Bb5 f6 17.Bf4 Kd7 18.Rdc1 a6 19.Ra4 Be7 20.Bxc6+ bxc6 21.Rca1
Bd3 22.Rc1 h5 23.g5 Rhf8 24.gxf6 gxf6 25.Kh2 Rg8 26.Ne1 Bb5 27.Raa1 Rae8 
28.Ng2 Bb4 29.Ne3 Re4 30.Ng2 Rxg2+ 31.Kxg2 Rxf4 32.Rd1 Be2 33.Rg1 Rxd4 34.
Kh2 Bd6+ 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Georges, Sascha"]
[Black "Martinez Echezarreta, Arturo"]
[Result "1/2-1/2"]
[WhiteElo "2220"]
[ECO "A38"]
[EventDate "1989.08.??"]
[PlyCount "54"]

1.c4 Nf6 2.Nf3 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O d6 6.Nc3 c5 7.d3 Nc6 8.a3 e5 9.
Rb1 a5 10.Ne1 Be6 11.Nc2 Qd7 12.b4 cxb4 13.axb4 d5 14.cxd5 Nxd5 15.Nxd5 
Bxd5 16.Bxd5 Qxd5 17.bxa5 Nxa5 18.Ne3 Qd7 19.Nc4 Nxc4 20.dxc4 Qc6 21.Qd5 
Rac8 22.Rxb7 Qxc4 23.Qxc4 Rxc4 24.Rd1 Rd4 25.Rxd4 exd4 26.Bf4 f5 27.Kf1 
Rf7 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "De Meyer, Geert"]
[Black "Dao Thien Hai"]
[Result "1/2-1/2"]
[ECO "E04"]
[EventDate "1989.08.??"]
[PlyCount "50"]

1.d4 d5 2.Nf3 Nf6 3.c4 dxc4 4.g3 Nbd7 5.Bg2 e6 6.O-O c5 7.Nc3 Be7 8.Qa4 
O-O 9.dxc5 Bxc5 10.Qxc4 Qc7 11.Qb3 a6 12.Bg5 h6 13.Bxf6 Nxf6 14.Rac1 Qb6 
15.Qxb6 Bxb6 16.Rfd1 Rb8 17.Na4 Bd8 18.Ne5 Nd5 19.Nc5 Re8 20.Ned7 Ra8 21.
Ne5 Bf6 22.Ned3 b6 23.e4 bxc5 24.exd5 exd5 25.Rxc5 Bg4 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Melgosa, Marcio"]
[Black "Chung, Ronnie"]
[Result "1-0"]
[ECO "C30"]
[EventDate "1989.08.??"]
[PlyCount "67"]

1.e4 e5 2.Nc3 Bc5 3.f4 d6 4.Nf3 Nc6 5.Na4 Bb6 6.Nxb6 axb6 7.d3 Nge7 8.Be2 
exf4 9.Bxf4 Ng6 10.Bg3 O-O 11.O-O Qe7 12.Qd2 f6 13.a3 Bd7 14.Rae1 Rfe8 15.
d4 Rad8 16.h3 Kh8 17.Bd3 Bc8 18.Kh1 Qf7 19.Bb5 Qe7 20.d5 Nce5 21.Bxe8 Rxe8
22.Nd4 Qf7 23.b3 Bd7 24.Qc3 Bc8 25.a4 h5 26.Nb5 Re7 27.Nxd6 cxd6 28.Qxc8+ 
Re8 29.Qf5 h4 30.Qh5+ Kg8 31.Bxh4 Nxh4 32.Qxh4 Ng6 33.Qf2 Qc7 34.Qg3 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Parodi, Rafael"]
[Black "Warner, Delisle"]
[Result "0-1"]
[ECO "A51"]
[EventDate "1989.08.??"]
[PlyCount "36"]

1.d4 Nf6 2.c4 e5 3.Bg5 Bb4+ 4.Bd2 Bxd2+ 5.Nxd2 exd4 6.Nb3 c5 7.Nf3 O-O 8.
g3 Nc6 9.Bg2 b6 10.O-O Ba6 11.Nbd2 Rc8 12.Rc1 Re8 13.Re1 d5 14.Qa4 Bb7 15.
Bh3 Rc7 16.Qc2 Rce7 17.Bf1 Nb4 18.Qb3 dxc4 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Rios Parra, Alejandro"]
[Black "Haughton, Richard"]
[Result "1-0"]
[ECO "B82"]
[EventDate "1989.08.??"]
[PlyCount "71"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.f4 e6 7.Be3 Qc7 8.Qf3 Be7
9.O-O-O Nc6 10.Rg1 Bd7 11.g4 h6 12.g5 hxg5 13.fxg5 Ne5 14.Qe2 Nh5 15.Nf3 
Ng6 16.Qf2 b5 17.a3 Rc8 18.Bd3 d5 19.Bb6 Qb7 20.exd5 Rxc3 21.bxc3 Bxa3+ 
22.Kb1 O-O 23.Bc5 b4 24.c4 Rc8 25.Bxg6 fxg6 26.Ne5 Ba4 27.dxe6 Bxc2+ 28.
Qxc2 b3 29.Qxg6 Bxc5 30.Qf7+ Qxf7 31.exf7+ Kh8 32.Rgf1 Kh7 33.Nd7 Bf8 34.
Nxf8+ Rxf8 35.Rde1 Kg6 36.Re6+ 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Rodrigues, Adriano von Pfuhl"]
[Black "Mera Cedeno, Angel"]
[Result "1/2-1/2"]
[ECO "E68"]
[EventDate "1989.08.??"]
[PlyCount "52"]

1.c4 Nf6 2.Nf3 g6 3.g3 Bg7 4.Bg2 O-O 5.d4 d6 6.Nc3 Nbd7 7.O-O c6 8.e4 e5 
9.d5 cxd5 10.cxd5 Nc5 11.Re1 a5 12.h3 b5 13.Bg5 b4 14.Na4 Nxa4 15.Qxa4 Bd7
16.Qb3 h6 17.Bxf6 Bxf6 18.a3 Qb6 19.Rec1 a4 20.Qxb4 Qxb4 21.axb4 Rfb8 22.
Rc4 Bb5 23.Rc3 Be2 24.Rca3 Rxb4 25.b3 Rb5 26.bxa4 Rb4 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "4"]
[White "Zulu, David"]
[Black "Hokkanen, Petri"]
[Result "0-1"]
[ECO "D37"]
[EventDate "1989.08.??"]
[PlyCount "116"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bf4 c6 6.e3 O-O 7.Bd3 Nbd7 8.O-O h6 
9.Rc1 Re8 10.Re1 Bf8 11.e4 dxe4 12.Nxe4 Nxe4 13.Bxe4 Nf6 14.Bb1 b6 15.Be5 
g6 16.Qc2 Bb7 17.Rcd1 Qe7 18.c5 Nd5 19.Bd6 Qf6 20.Ne5 Rad8 21.Ng4 Qg5 22.
Bxf8 Kxf8 23.h3 h5 24.Re5 Qe7 25.Nh2 bxc5 26.dxc5 Ba6 27.a3 Nf4 28.Rxd8 
Rxd8 29.Nf3 Qf6 30.Re3 Bd3 31.Qd1 Be4 32.Qe1 Nxh3+ 33.Kf1 Bxb1 34.Qxb1 Nf4
35.Qc2 Nd5 36.Rb3 g5 37.Qh7 Nf4 38.g3 g4 39.Ne1 Nh3 40.Qc2 Kg7 41.Qc3 e5 
42.Qe3 Ng5 43.Rc3 Rd4 44.b4 a6 45.Qe2 Ne4 46.Re3 Rd2 47.Rxe4 Rxe2 48.Rxe2 
Qe6 49.Nd3 f6 50.Re3 Qa2 51.Ne1 Qc4+ 52.Kg2 e4 53.Kg1 f5 54.Ng2 Qc1+ 55.
Kh2 Qf1 56.Ne1 Qxf2+ 57.Ng2 f4 58.gxf4 h4 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Dreev, Alexei"]
[Black "Serper, Grigory"]
[Result "1-0"]
[WhiteElo "2570"]
[BlackElo "2420"]
[ECO "A55"]
[EventDate "1989.08.??"]
[PlyCount "87"]

1.d4 Nf6 2.c4 d6 3.Nf3 Nbd7 4.Nc3 c6 5.e4 e5 6.Be2 Be7 7.O-O a6 8.Nh4 g6 
9.Bh6 Bf8 10.Bxf8 Kxf8 11.Qd2 Kg7 12.f4 exd4 13.Qxd4 Qb6 14.Qxb6 Nxb6 15.
Bd3 a5 16.Nf3 Nfd7 17.b3 Nc5 18.Bc2 Be6 19.f5 gxf5 20.exf5 Bd7 21.Rad1 f6 
22.Rxd6 Rhe8 23.Kf2 Re7 24.Re1 Rxe1 25.Nxe1 Be8 26.Nd3 Nbd7 27.Nxc5 Nxc5 
28.Ke3 Kf7 29.Rd4 Rc8 30.Bd1 Kf8 31.Bf3 Rc7 32.Ne4 Nxe4 33.Bxe4 b6 34.Rd6 
Ke7 35.Re6+ Kf7 36.Bf3 Re7 37.Bh5+ Kf8 38.Bxe8 Kxe8 39.Kf4 Kf7 40.Rxe7+ 
Kxe7 41.g4 h6 42.h4 Kf7 43.g5 Kg7 44.Kg4 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Stangl, Markus"]
[Black "Polgar, Zsuzsa"]
[Result "1/2-1/2"]
[WhiteElo "2375"]
[BlackElo "2520"]
[ECO "E65"]
[EventDate "1989.08.??"]
[PlyCount "78"]

1.Nf3 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.d4 c5 6.O-O d6 7.Nc3 Nc6 8.dxc5 
dxc5 9.Bf4 Nh5 10.Be3 Nd4 11.Nd2 Bg4 12.h3 Be6 13.Nb3 Nxb3 14.Qxb3 Qc7 15.
Qb5 Rac8 16.Qxb7 Qxb7 17.Bxb7 Rb8 18.Bg2 Rxb2 19.g4 Nf6 20.Bxc5 Rc8 21.
Bxe7 Rxc4 22.Rfd1 Rb8 23.g5 Nh5 24.Nd5 Ra4 25.Bd6 Rd8 26.Ne7+ Kh8 27.a3 h6
28.gxh6 Bxh6 29.Nc6 Rc8 30.e3 Bb3 31.Rd2 Ra6 32.Rb1 Be6 33.Rb8 Rxb8 34.
Nxb8 Rb6 35.Nc6 a5 36.Bc7 Rb1+ 37.Kh2 a4 38.Nd8 Bb3 39.Rd7 Rc1 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Wessman, Richard"]
[Black "Spasov, Vasil"]
[Result "1/2-1/2"]
[WhiteElo "2370"]
[BlackElo "2430"]
[ECO "A69"]
[EventDate "1989.08.??"]
[PlyCount "82"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f4 c5 6.d5 O-O 7.Nf3 e6 8.Be2 exd5 9.
cxd5 Re8 10.e5 dxe5 11.fxe5 Ng4 12.Bg5 Qb6 13.O-O Nxe5 14.Nxe5 Bxe5 15.Bc4
Bf5 16.Nb5 a6 17.d6 axb5 18.Bxf7+ Kxf7 19.Rxf5+ gxf5 20.Qh5+ Ke6 21.Qxe8+ 
Kxd6 22.Re1 c4+ 23.Be3 Nc6 24.Qxa8 Bd4 25.Rd1 Kc7 26.Bxd4 Nxd4 27.Kh1 Nc6 
28.Qg8 Qf2 29.Qxh7+ Kb6 30.Qg7 Qe2 31.Rc1 Ne5 32.Qf6+ Ka7 33.Qxf5 Nd3 34.
Rf1 Qxb2 35.h4 Qd4 36.h5 c3 37.h6 Qh4+ 38.Qh3 Nf2+ 39.Rxf2 Qxf2 40.Qxc3 
Qf1+ 41.Kh2 Qf4+ 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Van Wely, Loek"]
[Black "Gdanski, Jacek"]
[Result "0-1"]
[WhiteElo "2340"]
[BlackElo "2405"]
[ECO "E91"]
[EventDate "1989.08.??"]
[PlyCount "60"]

1.d4 Nf6 2.c4 c5 3.d5 g6 4.Nc3 d6 5.e4 Bg7 6.Nf3 O-O 7.Be2 e6 8.O-O Re8 9.
Nd2 Na6 10.Re1 Nc7 11.Nf1 Rb8 12.Ng3 exd5 13.exd5 a6 14.a4 b5 15.axb5 axb5
16.cxb5 Bd7 17.Bf4 Bxb5 18.Nxb5 Nxb5 19.Ra6 Bf8 20.Bxb5 Rxe1+ 21.Qxe1 Rxb5
22.Bg5 h6 23.Bxf6 Qxf6 24.Ra8 Rxb2 25.Ne4 Qd4 26.h4 Kg7 27.h5 Qxd5 28.hxg6
Qd3 29.Nc3 Qd2 30.Qe8 Qxf2+ 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Kontic, Vladimir"]
[Black "Boissonet, Carlos"]
[Result "1/2-1/2"]
[WhiteElo "2395"]
[BlackElo "2340"]
[ECO "B75"]
[EventDate "1989.08.??"]
[PlyCount "76"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 Nc6 8.Bc4 
Qb6 9.Bb5 Qc7 10.Nd5 Nxd5 11.exd5 a6 12.Bxc6+ bxc6 13.Nxc6 O-O 14.O-O Bb7 
15.c4 Bxc6 16.dxc6 Qxc6 17.Qe2 Rab8 18.Rab1 a5 19.b3 a4 20.b4 Rfc8 21.c5 
Qb5 22.Qxb5 Rxb5 23.a3 d5 24.Rfd1 Rd8 25.Bd4 e5 26.Ba1 d4 27.Rbc1 Bh6 28.
Rc4 f6 29.Kf2 Kf7 30.Ke2 Ke6 31.Bb2 Rbb8 32.Rc2 f5 33.g3 Be3 34.c6 Rb6 35.
f4 Rc8 36.fxe5 Kxe5 37.Rc5+ Ke4 38.Bxd4 Bxd4 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Koch, Jean-Rene"]
[Black "Hernandez, Gilberto"]
[Result "0-1"]
[WhiteElo "2420"]
[BlackElo "2300"]
[ECO "B57"]
[EventDate "1989.08.??"]
[PlyCount "108"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bc4 Qb6 7.Ndb5 a6 8.Be3 
Qa5 9.Nd4 Ne5 10.Nb3 Qc7 11.Bd3 e6 12.f4 Nc4 13.Bxc4 Qxc4 14.Qf3 Qc7 15.
Qg3 b5 16.e5 dxe5 17.fxe5 b4 18.Na4 Ne4 19.Qf4 Bb7 20.O-O g5 21.Qg4 h5 22.
Qe2 h4 23.Nb6 Rd8 24.Rad1 Be7 25.Rxd8+ Bxd8 26.Rd1 h3 27.Rd7 Qxb6 28.Bxb6 
Bxb6+ 29.Rd4 Rh4 30.gxh3 Rxh3 31.Qc4 Rxb3 32.Kf1 Rf3+ 33.Ke1 Bxd4 34.Qxd4 
Rf5 35.Qxb4 Rxe5 36.Kd1 Rd5+ 37.Ke2 Rd7 38.Qb6 Ke7 39.c4 f5 40.c5 Rd2+ 41.
Ke1 Bd5 42.c6 Rc2 43.Qc7+ Kf6 44.Qd8+ Ke5 45.Qb8+ Kd4 46.Qb6+ Ke5 47.Qb8+ 
Kd4 48.Qb6+ Kd3 49.Qxa6+ Ke3 50.Kd1 Rc5 51.Qa3+ Kf4 52.Qb4 Bc4 53.Ke1 Bb5 
54.Qd2+ Kg4 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Manor, Ilan"]
[Black "Georges, Sascha"]
[Result "1-0"]
[WhiteElo "2445"]
[BlackElo "2220"]
[ECO "D80"]
[EventDate "1989.08.??"]
[PlyCount "81"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bg5 Ne4 5.Bh4 Nxc3 6.bxc3 Bg7 7.e3 c5 8.Nf3 
Nc6 9.Rc1 Bg4 10.Qb3 Bxf3 11.gxf3 dxc4 12.Qxb7 Rc8 13.Bxc4 O-O 14.d5 Rc7 
15.Qa6 Ne5 16.Ke2 Qd7 17.Bg3 Rb8 18.Rb1 Rcb7 19.Rb3 Rxb3 20.axb3 Rb6 21.
Qa3 Nxc4 22.bxc4 a5 23.Ra1 Qh3 24.Rd1 h5 25.Qa2 Bxc3 26.Rb1 Bb4 27.Be5 Qd7
28.Ba1 f6 29.Qc2 Kf7 30.Rf1 Qf5 31.e4 Qf4 32.h3 a4 33.Bb2 a3 34.Bc1 Qe5 
35.f4 Qc3 36.Qxc3 Bxc3 37.Bxa3 Ra6 38.Bxc5 Ra2+ 39.Kd3 Ba5 40.Rb1 Rd2+ 41.
Ke3 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Huda, Rehan"]
[Black "Djurhuus, Rune"]
[Result "1/2-1/2"]
[WhiteElo "2230"]
[BlackElo "2415"]
[ECO "A55"]
[EventDate "1989.08.??"]
[PlyCount "90"]

1.Nf3 Nf6 2.c4 d6 3.d4 Nbd7 4.g3 e5 5.Nc3 Be7 6.Bg2 O-O 7.O-O c6 8.e4 a6 
9.d5 cxd5 10.cxd5 b5 11.Re1 Nb6 12.a4 Bd7 13.axb5 axb5 14.Rxa8 Qxa8 15.Qb3
Rb8 16.Qb4 Nc4 17.Nd2 Nxd2 18.Bxd2 Ne8 19.Ne2 Bd8 20.Qa3 Qxa3 21.bxa3 Ra8 
22.Bb4 Ba5 23.Nc1 Bxb4 24.axb4 f5 25.exf5 Ra4 26.Nb3 Rxb4 27.Na5 Kf7 28.
Nc6 Bxc6 29.dxc6 Nc7 30.Ra1 Ra4 31.Rd1 Ke7 32.f4 e4 33.g4 d5 34.Kf2 Ra2+ 
35.Kg3 Ra6 36.Bxe4 Kd6 37.Bb1 Rxc6 38.g5 b4 39.f6 gxf6 40.Bxh7 fxg5 41.
fxg5 Ne6 42.Bg8 b3 43.Bxe6 Kxe6 44.Rb1 Rb6 45.h4 Kf5 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Rodriguez, Daniel"]
[Black "Hsu Li Yang"]
[Result "1/2-1/2"]
[WhiteElo "2235"]
[BlackElo "2315"]
[ECO "B01"]
[EventDate "1989.08.??"]
[PlyCount "86"]

1.e4 d5 2.exd5 Nf6 3.d4 Nxd5 4.c4 Nb6 5.Nc3 e5 6.d5 c6 7.Be3 Bb4 8.Qb3 Qe7
9.O-O-O Bf5 10.d6 Bxd6 11.Rxd6 Qxd6 12.c5 Qe6 13.Qxe6+ Bxe6 14.cxb6 axb6 
15.Bxb6 Nd7 16.Be3 Bxa2 17.Nxa2 Rxa2 18.Kb1 Ra4 19.b3 Ra5 20.Bd2 Rd5 21.
Kc2 b5 22.Ne2 f5 23.Nc3 Rd6 24.Be2 Kf7 25.Ra1 Nc5 26.Be3 Ne6 27.Ra7+ Kf6 
28.h4 Rhd8 29.g4 Nd4+ 30.Kb1 Nxe2 31.Bg5+ Kg6 32.gxf5+ Kxf5 33.Nxe2 R8d7 
34.Ra8 h6 35.Be3 Kg4 36.Re8 Kxh4 37.Rxe5 Kg4 38.Ng3 Rd5 39.Re4+ Kf3 40.
Rf4+ Kg2 41.Rg4 Kf3 42.Rf4+ Kg2 43.Rg4 Kh3 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Shirov, Alexei"]
[Black "Rodriguez Vila, Andres"]
[Result "1/2-1/2"]
[WhiteElo "2495"]
[ECO "E20"]
[EventDate "1989.08.??"]
[PlyCount "86"]

1.d4 e6 2.c4 Nf6 3.Nc3 Bb4 4.f3 d5 5.a3 Be7 6.e4 c5 7.e5 Nfd7 8.cxd5 exd5 
9.Nxd5 cxd4 10.Nxe7 Qxe7 11.f4 f6 12.Nf3 fxe5 13.Bc4 d3 14.fxe5 Nxe5 15.
Nxe5 Qxe5+ 16.Kd2 Qf4+ 17.Kxd3 Bf5+ 18.Kc3 Qe5+ 19.Qd4 Qxd4+ 20.Kxd4 Nc6+ 
21.Kc3 O-O-O 22.Rf1 Bd7 23.Bf4 Rde8 24.Rad1 Rhf8 25.Bd3 Bg4 26.Rd2 Ne5 27.
Bb5 Bd7 28.Bxe5 Bxb5 29.Rxf8 Rxf8 30.Bxg7 Re8 31.Rd5 Re3+ 32.Kb4 Bc6 33.
Rd2 Re4+ 34.Bd4 a6 35.Kc3 Rf4 36.Bb6 Bd7 37.Bc5 Rf5 38.Bd6 Bc6 39.Re2 Kd7 
40.Bg3 Rg5 41.Bh4 Rxg2 42.Rxg2 Bxg2 43.Bg3 h5 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Sorensen, Jan"]
[Black "Ulybin, Mikhail"]
[Result "0-1"]
[BlackElo "2495"]
[ECO "C00"]
[EventDate "1989.08.??"]
[PlyCount "44"]

1.e4 e6 2.Nf3 d5 3.e5 c5 4.b4 c4 5.c3 a5 6.b5 Qb6 7.a4 Bc5 8.d4 cxd3 9.Qd2
Nd7 10.Bxd3 f6 11.exf6 Ngxf6 12.O-O O-O 13.Ba3 Bxa3 14.Nxa3 e5 15.Bf5 Nc5 
16.Bxc8 Raxc8 17.Nxe5 Nb3 18.Nd7 Qd6 19.Qa2 Ng4 20.g3 Rf3 21.Qxb3 Rcxc3 
22.Qd1 Rxg3+ 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Hokkanen, Petri"]
[Black "Moutousis, Konstantinos"]
[Result "1-0"]
[BlackElo "2330"]
[ECO "E15"]
[EventDate "1989.08.??"]
[PlyCount "112"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.b3 d5 6.cxd5 exd5 7.Bg2 Bb4+ 8.Bd2 
Bxd2+ 9.Qxd2 O-O 10.Nc3 Re8 11.O-O Nbd7 12.Rfd1 Ne4 13.Nxe4 dxe4 14.Ne1 
Nf6 15.e3 Qd5 16.Rac1 Re7 17.Rc2 Qh5 18.Rdc1 Nd5 19.Rb2 Rae8 20.b4 Bc8 21.
Qc2 Bg4 22.Qa4 Bd7 23.Qxa7 Bh3 24.Qa6 Nf6 25.Qf1 Bg4 26.a4 Nd5 27.h3 Bd7 
28.a5 Re6 29.a6 Rh6 30.Qe2 Qg6 31.h4 Qd6 32.b5 Qe7 33.Qc4 Rd6 34.Nc2 g5 
35.hxg5 Qxg5 36.Re1 Rh6 37.Nb4 Nf6 38.Qxc7 Bxb5 39.Qf4 Qh5 40.g4 Nxg4 41.
f3 exf3 42.Bxf3 Rg6 43.Rg2 Qh4 44.Qg3 Qe7 45.Nd5 Qd8 46.Nf4 Nxe3 47.Nxg6 
hxg6 48.a7 Qxd4 49.Rf2 Kg7 50.a8=Q Rxa8 51.Bxa8 Ng4 52.Qf4 Qxf2+ 53.Qxf2 
Nxf2 54.Kxf2 Bd7 55.Ke3 f5 56.Kf4 Kf6 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Ruxton, Keith"]
[Black "Rodrigues, Adriano von Pfuhl"]
[Result "1-0"]
[WhiteElo "2325"]
[ECO "B81"]
[EventDate "1989.08.??"]
[PlyCount "117"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.g4 h6 7.h4 Nc6 8.Rg1 h5 
9.gxh5 Nxh5 10.Be2 Nf6 11.h5 a6 12.Bg5 Qb6 13.Nb3 Qc7 14.h6 Nd7 15.hxg7 
Bxg7 16.Qd2 b6 17.O-O-O Bf8 18.Rh1 Rxh1 19.Rxh1 Bb7 20.Rh7 Be7 21.Bxe7 
Nxe7 22.Bh5 O-O-O 23.Bxf7 Nf8 24.Rg7 Kb8 25.Bh5 e5 26.Bg4 Bc8 27.Bxc8 Kxc8
28.Nd5 Nxd5 29.Rxc7+ Nxc7 30.Qb4 b5 31.Na5 Nfe6 32.Nc6 Rd7 33.Qd2 Nf4 34.
f3 Kb7 35.Nb4 a5 36.Nd3 Nxd3+ 37.Qxd3 Kc6 38.a4 b4 39.c3 bxc3 40.Qxc3+ Kb6
41.b4 Na6 42.bxa5+ Kb7 43.Qb3+ Kc8 44.Qb6 Rc7+ 45.Kd1 Nb8 46.a6 Nc6 47.Ke1
Kd7 48.Kf2 Ra7 49.Kg3 Rc7 50.Kg4 Ra7 51.Kg5 Rc7 52.Kf6 Ra7 53.a5 Rc7 54.
Qb3 Na7 55.Qe6+ Kc6 56.Qe8+ Kc5 57.Qb8 Kc6 58.Ke6 Nc8 59.a7 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Imocha, Laisram"]
[Black "Walsh, Chris"]
[Result "1-0"]
[WhiteElo "2315"]
[ECO "E18"]
[EventDate "1989.08.??"]
[PlyCount "79"]

1.d4 Nf6 2.Nf3 d5 3.g3 e6 4.Bg2 b6 5.c4 Bb7 6.O-O Be7 7.Nc3 O-O 8.Ne5 Ne4 
9.cxd5 exd5 10.Be3 Nd7 11.Nxe4 dxe4 12.Qc2 Nf6 13.Nc6 Qd7 14.Rac1 Bxc6 15.
Qxc6 Qxc6 16.Rxc6 Bd6 17.Bg5 Rae8 18.Bxf6 gxf6 19.e3 Kg7 20.f3 f5 21.Bh3 
Kg6 22.fxe4 fxe4 23.Bf5+ Kg7 24.Kg2 a5 25.h4 Re7 26.Bg4 Rg8 27.Bh5 Kf8 28.
g4 Ke8 29.Kh3 Kd7 30.Rc2 Rg7 31.Rf6 Re6 32.Rf5 c5 33.Bxf7 Re7 34.Bc4 Kc7 
35.Bd5 Re8 36.g5 h6 37.Bf7 Re7 38.g6 Kb8 39.Rf6 Kc7 40.Kg4 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Brandner, Stefan"]
[Black "Rios Parra, Alejandro"]
[Result "0-1"]
[WhiteElo "2305"]
[ECO "B76"]
[EventDate "1989.08.??"]
[PlyCount "74"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 
Nc6 9.g4 Nxd4 10.Bxd4 Be6 11.O-O-O Qa5 12.a3 Rfc8 13.h4 h5 14.g5 Nd7 15.
Bxg7 Kxg7 16.f4 Rab8 17.Bh3 Rc4 18.f5 gxf5 19.exf5 Bxf5 20.Bxf5 Qxf5 21.
Nd5 Re4 22.Rhf1 Qe6 23.Nf4 Qg4 24.Qc3+ Ne5 25.Nd3 Rc8 26.Qb3 Nxd3+ 27.Rxd3
Qe6 28.Qxb7 Qc4 29.Qb3 Rxh4 30.Qxc4 Rhxc4 31.c3 Rg4 32.Rdf3 Rf8 33.Rf5 Kg6
34.Ra5 Rxg5 35.Rxa7 e6 36.a4 h4 37.Re1 h3 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Vasquez Schroder, Rodrigo"]
[Black "Santos, Carlos Pereira"]
[Result "0-1"]
[WhiteElo "2300"]
[ECO "C19"]
[EventDate "1989.08.??"]
[PlyCount "110"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.a4 Qc7 8.Nf3 b6 
9.Bb5+ Bd7 10.Bd3 h6 11.a5 bxa5 12.O-O c4 13.Be2 Nbc6 14.Ba3 O-O 15.Nh4 f5
16.f4 Kh7 17.Qd2 Rf7 18.Qe3 g6 19.Qh3 Rh8 20.Rab1 Rg7 21.Nf3 Kg8 22.Qg3 
Nc8 23.h4 a6 24.h5 N6a7 25.Bd6 Nxd6 26.exd6 Qxd6 27.Rb7 gxh5 28.Qh4 Be8 
29.Rxg7+ Kxg7 30.Ne5 Nc6 31.Nxc6 Qxc6 32.Qe7+ Bf7 33.Bxh5 Qe8 34.Qc7 Rf8 
35.Rf3 Kf6 36.Rg3 Qb8 37.Qd7 Qc8 38.Qa7 Qb8 39.Qd7 Qxf4 40.Bxf7 Qxg3 41.
Qxe6+ Kg7 42.Bh5 Rb8 43.Qe7+ Kh8 44.Qf6+ Qg7 45.Qxa6 Qg5 46.Bf3 Qh4 47.Be2
f4 48.Qd6 Re8 49.Bf1 f3 50.g3 Qg5 51.Kh2 Rg8 52.Kh1 a4 53.Bh3 a3 54.Qa6 a2
55.g4 Qh4 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Martin, Benjamin"]
[Black "Zulu, David"]
[Result "1-0"]
[WhiteElo "2280"]
[ECO "D35"]
[EventDate "1989.08.??"]
[PlyCount "93"]

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 Be6 6.e3 Be7 7.Bd3 h6 8.Bxf6 
Bxf6 9.Nge2 O-O 10.O-O Re8 11.b4 Be7 12.Rb1 c6 13.Nf4 Bd6 14.Qf3 Nd7 15.b5
Rb8 16.Rfc1 Qg5 17.Nce2 c5 18.Nxe6 fxe6 19.Qh3 c4 20.Bc2 Nf8 21.f4 Qe7 22.
e4 Ba3 23.Rf1 dxe4 24.Bxe4 Nd7 25.Rf3 Bd6 26.Bg6 Rf8 27.Re3 Rf6 28.Qg4 Nf8
29.Bc2 Qc7 30.g3 Qa5 31.Nc3 Bb4 32.Ne4 Rf7 33.Qe2 Rc8 34.a3 Bxa3 35.Ra1 c3
36.Nd6 Rcc7 37.Nxf7 Rxf7 38.Qc4 Qb4 39.Qxb4 Bxb4 40.Ra4 Bd6 41.Rxc3 b6 42.
Rc6 Bc7 43.Rxa7 Bd8 44.Rxf7 Kxf7 45.Kf2 Nd7 46.Bb3 Nf8 47.f5 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Apaza, Henry"]
[Black "Cadena, Juan"]
[Result "1-0"]
[ECO "D15"]
[EventDate "1989.08.??"]
[PlyCount "62"]

1.d4 d5 2.c4 Nf6 3.Nc3 c6 4.Nf3 Nbd7 5.Qc2 e5 6.Bg5 Be7 7.cxd5 cxd5 8.e3 
Nh5 9.Bxe7 Qxe7 10.O-O-O a5 11.g4 Nhf6 12.g5 Ne4 13.Bd3 Nxg5 14.Nxg5 Qxg5 
15.Kb1 Nf6 16.e4 dxe4 17.Nxe4 Nxe4 18.Bxe4 Be6 19.Rhe1 Rd8 20.Bf5 O-O 21.
Bxh7+ Kh8 22.Rxe5 Qh4 23.Be4 Bd5 24.Qe2 Bxe4+ 25.Rxe4 Qh7 26.Ka1 Qxh2 27.
Re5 Kg8 28.Rh5 Qf4 29.Rdh1 g6 30.R5h4 Qg5 31.Qf3 f5 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Chung, Ronnie"]
[Black "Parodi, Rafael"]
[Result "1-0"]
[ECO "C02"]
[EventDate "1989.08.??"]
[PlyCount "51"]

1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Qb6 6.Bd3 cxd4 7.cxd4 Bd7 8.Bc2 f5 
9.exf6 Nxf6 10.O-O Bd6 11.Nc3 O-O 12.Bg5 a6 13.a3 Rf7 14.Re1 Qc7 15.Qd3 g6
16.Rab1 Rc8 17.Qd2 Nh5 18.Bd3 Rcf8 19.Rbc1 Nxd4 20.Nxd5 Nxf3+ 21.gxf3 
Bxh2+ 22.Kh1 Qd6 23.Ne7+ Kh8 24.Qc3+ Nf6 25.Nxg6+ Kg8 26.Nxf8 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Dao Thien Hai"]
[Black "Castillo Melendez, Otto Rene"]
[Result "1/2-1/2"]
[ECO "D36"]
[EventDate "1989.08.??"]
[PlyCount "60"]

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 Nbd7 6.e3 Be7 7.Bd3 c6 8.Qc2 
g6 9.Nge2 Nh5 10.Bxe7 Qxe7 11.g4 Ng7 12.h3 Nf8 13.Nf4 Nfe6 14.O-O-O Bd7 
15.Kb1 O-O 16.Nxe6 Bxe6 17.f4 f5 18.Rdg1 Bd7 19.Rg3 b5 20.Ne2 b4 21.Nc1 
Kh8 22.Nb3 a5 23.Nc5 Bc8 24.Rc1 Qh4 25.Qg2 Qe7 26.Qf3 Ra7 27.Bc2 Rc7 28.
Ba4 Bd7 29.Nxd7 Qxd7 30.Rg2 Qd6 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Haughton, Richard"]
[Black "Melgosa, Marcio"]
[Result "1-0"]
[ECO "D82"]
[EventDate "1989.08.??"]
[PlyCount "83"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 c5 6.dxc5 Qa5 7.Qa4+ Qxa4 8.Nxa4 
O-O 9.Nc3 Be6 10.Nf3 dxc4 11.Nd4 Bd7 12.Bxc4 Rc8 13.Bd5 Nc6 14.Bf3 Ne8 15.
Nde2 e5 16.Bg5 Bf8 17.Rd1 Be6 18.b4 Rab8 19.a3 Nc7 20.O-O Bc4 21.Bf6 Ne8 
22.Bxc6 Nxf6 23.Bb5 Be6 24.Ng3 Ne8 25.Nge4 Be7 26.Bxe8 Rxe8 27.Nb5 Bc4 28.
Nbd6 Bxd6 29.Nxd6 Bxf1 30.Nxe8 Bxg2 31.Nf6+ Kg7 32.Nh5+ gxh5 33.Kxg2 Kf6 
34.Kf3 Ke7 35.Rd5 f6 36.Ke4 Rg8 37.h3 Rg2 38.f4 Rh2 39.fxe5 Rxh3 40.exf6+ 
Kxf6 41.Rd7 Rg3 42.Rxb7 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Mamombe, Kudzanai"]
[Black "Torres Baldeon, Jean Pierre"]
[Result "0-1"]
[ECO "C71"]
[EventDate "1989.08.??"]
[PlyCount "72"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.d4 Bd7 6.Bb3 h6 7.O-O Nge7 8.h3 Ng6 
9.Nc3 Be7 10.Be3 O-O 11.a3 Bf6 12.Ne2 Qe7 13.d5 Na5 14.Ba2 Bb5 15.Re1 Bxe2
16.Qxe2 b6 17.Nh2 Bg5 18.Qg4 Nb7 19.Bc4 Bf4 20.g3 Bxe3 21.Rxe3 Qg5 22.Qxg5
hxg5 23.Be2 Ne7 24.Rd1 g6 25.Nf3 f6 26.Rdd3 Kg7 27.Rc3 Rfc8 28.b4 Nd8 29.
g4 Nf7 30.Ne1 f5 31.f3 Nh6 32.Bf1 Nhg8 33.b5 a5 34.Re2 Nf6 35.gxf5 gxf5 
36.Rc4 Nd7 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Martinez Echezarreta, Arturo"]
[Black "Miguel Lago, Victor Placido"]
[Result "1-0"]
[ECO "D03"]
[EventDate "1989.08.??"]
[PlyCount "99"]

1.d4 Nf6 2.Nf3 g6 3.Bg5 Bg7 4.Nbd2 d5 5.e3 O-O 6.Be2 c5 7.O-O Nbd7 8.c4 
dxc4 9.Nxc4 h6 10.Bh4 g5 11.Bg3 Ne4 12.Qc2 Nxg3 13.hxg3 b5 14.Nce5 Nxe5 
15.dxe5 Qb6 16.Rfd1 Be6 17.Qe4 c4 18.Nd4 Rfd8 19.Nc6 Rd7 20.f4 Rxd1+ 21.
Rxd1 Rc8 22.Bf3 g4 23.Nd8 Qd6 24.Nxe6 Qxe6 25.Be2 h5 26.Rd5 a6 27.Bd1 f5 
28.Qd4 Kf7 29.Bc2 h4 30.gxh4 g3 31.e4 Qh6 32.exf5 Qxh4 33.Be4 Qh2+ 34.Kf1 
Qh1+ 35.Ke2 Qh5+ 36.Kd2 c3+ 37.bxc3 Qh4 38.f6 Qxf4+ 39.Ke2 Qf2+ 40.Kd3 
Qxd4+ 41.cxd4 Bf8 42.Bf5 Rc1 43.Rd7 Rf1 44.Bg4 Rh1 45.d5 Ke8 46.fxe7 Bxe7 
47.d6 Bg5 48.Rg7 Rb1 49.Kc2 Rc1+ 50.Kb2 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Mera Cedeno, Angel"]
[Black "De Meyer, Geert"]
[Result "0-1"]
[ECO "A58"]
[EventDate "1989.08.??"]
[PlyCount "70"]

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.Nc3 axb5 6.Nxb5 Ba6 7.Nc3 g6 8.g3 d6 
9.Bg2 Bg7 10.Nh3 O-O 11.O-O Nbd7 12.Qc2 Ra7 13.b3 Qa8 14.Bb2 Rb8 15.Rfb1 
c4 16.Nf4 Nc5 17.Ba3 cxb3 18.axb3 Bc8 19.Na4 Bf5 20.Nd3 Nxb3 21.Rxb3 Rxb3 
22.Qxb3 Rxa4 23.Nb2 Ra7 24.Nc4 Ne4 25.Rc1 Rb7 26.Qe3 Nf6 27.Bb2 Ng4 28.Qd2
Qa7 29.e4 Bh6 30.Qc3 Qxf2+ 31.Kh1 Rxb2 32.Nxb2 Bxe4 33.Rg1 Bxg2+ 34.Rxg2 
Qf1+ 35.Rg1 Nf2# 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "5"]
[White "Warner, Delisle"]
[Black "Segovia, Javier"]
[Result "1-0"]
[ECO "A67"]
[EventDate "1989.08.??"]
[PlyCount "64"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Bb5+ Nfd7
9.a4 O-O 10.Nf3 Na6 11.O-O Nb4 12.Re1 a6 13.Bf1 Re8 14.Kh1 Qc7 15.Qb3 Rb8 
16.Bd2 b6 17.Rad1 Nf6 18.h3 Bd7 19.e5 Nh5 20.Kh2 dxe5 21.fxe5 Bxe5+ 22.
Nxe5 Rxe5 23.d6 Qc6 24.Rxe5 Qxd6 25.Bf4 Qf6 26.Rxd7 Qxf4+ 27.Kg1 Rb7 28.
Re8+ Kg7 29.Ne2 Qxf1+ 30.Kxf1 Rxd7 31.Qc3+ Nf6 32.g4 Nd3 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Gdanski, Jacek"]
[Black "Dreev, Alexei"]
[Result "0-1"]
[WhiteElo "2405"]
[BlackElo "2570"]
[ECO "C60"]
[EventDate "1989.08.??"]
[PlyCount "110"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nge7 4.O-O g6 5.c3 Bg7 6.d4 exd4 7.cxd4 d5 8.exd5 
Nxd5 9.Re1+ Be6 10.Nc3 O-O 11.h3 Nce7 12.Ne4 c6 13.Bf1 Nf5 14.Nc5 Bc8 15.
Bg5 Qb6 16.Na4 Qb4 17.a3 Qd6 18.Nc3 h6 19.Bd2 Rd8 20.Ne4 Qc7 21.Bc3 b6 22.
Qc2 Be6 23.Rad1 a5 24.Bd2 Re8 25.Qc1 Kh7 26.h4 Kg8 27.Bd3 Rad8 28.Bb1 h5 
29.Neg5 Bc8 30.Ba2 Nfe7 31.Ne5 Rf8 32.Bf4 Qb7 33.Ne4 Nxf4 34.Qxf4 Nd5 35.
Qg3 Bf5 36.Bb1 Rd7 37.Nc3 Bxb1 38.Rxb1 Nxc3 39.bxc3 Re8 40.f4 c5 41.Rbd1 
Rd5 42.Nxg6 Rxe1+ 43.Rxe1 fxg6 44.Qxg6 Rd8 45.f5 Qf7 46.Qxb6 Rc8 47.Qxa5 
cxd4 48.cxd4 Bxd4+ 49.Kh1 Bf2 50.Rf1 Qc4 51.Rxf2 Qxh4+ 52.Kg1 Rc1+ 53.Rf1 
Qd4+ 54.Kh2 Rxf1 55.Qa8+ Kh7 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Ulybin, Mikhail"]
[Black "Kontic, Vladimir"]
[Result "1-0"]
[WhiteElo "2495"]
[BlackElo "2395"]
[ECO "C01"]
[EventDate "1989.08.??"]
[PlyCount "147"]

1.e4 e6 2.d4 d5 3.exd5 exd5 4.Nf3 Nf6 5.Bg5 Bg4 6.Qe2+ Qe7 7.Bxf6 gxf6 8.
Qxe7+ Bxe7 9.Nbd2 Nc6 10.c3 O-O-O 11.Bd3 Bd6 12.O-O Ne7 13.Nh4 Bf4 14.Rfe1
Rde8 15.Ndf3 Kd8 16.g3 Bg5 17.Kg2 h6 18.h3 Bd7 19.Kh2 Nc8 20.Nf5 Bxf5 21.
Bxf5 Nd6 22.Bd3 Rxe1 23.Nxe1 f5 24.h4 Bf6 25.Ng2 c6 26.Rf1 Re8 27.Kh3 Ne4 
28.Nf4 Rg8 29.Nh5 Bh8 30.f3 Nd6 31.Re1 Re8 32.Rxe8+ Kxe8 33.g4 fxg4+ 34.
fxg4 Ke7 35.g5 hxg5 36.hxg5 b6 37.Kg4 Kd7 38.b4 Ke7 39.Kf3 Kd7 40.Kg4 c5 
41.bxc5 bxc5 42.dxc5 Nb7 43.Bb5+ Ke7 44.c6 Nd6 45.c7 Bxc3 46.Nf6 Ba5 47.
Nxd5+ Ke6 48.Bc6 Nc8 49.Bb7 Nd6 50.Bc6 Nc8 51.Nf6 Kd6 52.Be8 Bxc7 53.Bxf7 
Ke7 54.Nd5+ Kxf7 55.Nxc7 Kg6 56.Nd5 Nd6 57.Ne7+ Kf7 58.Nc6 a6 59.Kh5 Kg7 
60.a4 Ne4 61.a5 Ng3+ 62.Kg4 Ne4 63.Ne7 Kf7 64.Nd5 Kg6 65.Nf4+ Kf7 66.g6+ 
Kg7 67.Kf5 Nd6+ 68.Kg5 Ne4+ 69.Kg4 Kh6 70.Kf5 Nd6+ 71.Ke6 Ne4 72.Kd5 Nc3+ 
73.Kc6 Na2 74.Kc5 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Polgar, Zsuzsa"]
[Black "Van Wely, Loek"]
[Result "1/2-1/2"]
[WhiteElo "2520"]
[BlackElo "2320"]
[ECO "E68"]
[EventDate "1989.08.??"]
[PlyCount "87"]

1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.g3 O-O 5.Bg2 d6 6.Nc3 Nbd7 7.O-O e5 8.e4 exd4
9.Nxd4 Re8 10.h3 Nc5 11.Re1 a6 12.b3 Bd7 13.Bb2 Qc8 14.Kh2 b5 15.b4 Na4 
16.Nxa4 bxa4 17.e5 dxe5 18.Bxa8 Qxa8 19.Nf3 Rd8 20.Nxe5 Bxh3 21.Qf3 Qxf3 
22.Nxf3 Be6 23.Kg1 Bxc4 24.a3 Bd5 25.Rad1 c6 26.Ne5 Ra8 27.Nd3 a5 28.bxa5 
Rxa5 29.Nb4 Ne4 30.Bxg7 Kxg7 31.Rc1 Nd2 32.Re3 Be4 33.Rcc3 c5 34.Nd3 c4 
35.Nb4 Rb5 36.f3 Bd5 37.Rc2 Nb1 38.Re5 f6 39.Re7+ Kh6 40.Ra7 Nxa3 41.Rh2+ 
Kg5 42.Rxa4 Nb1 43.Rxh7 Nd2 44.Rc7 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Spasov, Vasil"]
[Black "Boissonet, Carlos"]
[Result "0-1"]
[WhiteElo "2430"]
[BlackElo "2340"]
[ECO "B71"]
[EventDate "1989.08.??"]
[PlyCount "80"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.f4 Nc6 7.Nf3 Bg7 8.Bd3 
O-O 9.O-O Nb4 10.h3 Nxd3 11.cxd3 b5 12.Be3 b4 13.Ne2 a5 14.g4 h5 15.g5 Ne8
16.Kh2 Bxb2 17.Rb1 Bg7 18.Nh4 d5 19.e5 Qd7 20.Rf3 Nc7 21.Nd4 e6 22.Rc1 Nb5
23.Nxb5 Qxb5 24.Bc5 Re8 25.d4 Ba6 26.Re3 Bf8 27.f5 exf5 28.e6 Qb8+ 29.Kh1 
Qf4 30.Qe1 Bd3 31.Bxf8 Kxf8 32.Re5 Be4+ 33.Kg1 Qxg5+ 34.Kh2 f6 35.Rxe4 
fxe4 36.Qf2 e3 37.Qe1 Rxe6 38.Ng2 e2 39.Rc7 h4 40.Kh1 Qg3 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Hsu Li Yang"]
[Black "Koch, Jean-Rene"]
[Result "0-1"]
[WhiteElo "2315"]
[BlackElo "2420"]
[ECO "A30"]
[EventDate "1989.08.??"]
[PlyCount "80"]

1.Nf3 c5 2.c4 Nf6 3.Nc3 g6 4.g3 b6 5.Bg2 Bb7 6.b3 Bg7 7.Bb2 O-O 8.O-O Na6 
9.d4 cxd4 10.Nxd4 Bxg2 11.Kxg2 Qc7 12.e4 Qb7 13.Qe2 d6 14.Rad1 Rac8 15.h3 
Rfd8 16.Kh2 Nc5 17.Rfe1 e6 18.Ndb5 Qe7 19.f4 a6 20.Nd4 Qc7 21.Qf3 Ncd7 22.
Rd2 h5 23.Nde2 Nc5 24.Kg2 Qb7 25.Red1 Qb8 26.Nd4 Qa8 27.Re2 h4 28.f5 hxg3 
29.fxg6 fxg6 30.b4 e5 31.Nd5 Nxd5 32.exd5 exd4 33.bxc5 dxc5 34.Re7 Rf8 35.
Qg4 Rce8 36.Rde1 Rxe7 37.Rxe7 Rf2+ 38.Kg1 Qf8 39.Qe6+ Kh7 40.Qe1 Rxb2 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Huda, Rehan"]
[Black "Manor, Ilan"]
[Result "0-1"]
[WhiteElo "2230"]
[BlackElo "2445"]
[ECO "E16"]
[EventDate "1989.08.??"]
[PlyCount "154"]

1.Nf3 Nf6 2.c4 b6 3.g3 Bb7 4.d4 e6 5.Bg2 Bb4+ 6.Bd2 a5 7.O-O O-O 8.Bg5 h6 
9.Bxf6 Qxf6 10.a3 Be7 11.Nc3 g6 12.e4 Qg7 13.Re1 d6 14.Qc2 g5 15.h3 Nc6 
16.d5 Ne5 17.Nxe5 dxe5 18.Na4 Ba6 19.Red1 Rfd8 20.Rd2 Qf8 21.Rad1 Bc8 22.
Nc3 Bc5 23.dxe6 Bxe6 24.Nd5 Rac8 25.Nf6+ Kg7 26.Nd7 Bxd7 27.Rxd7 Bd4 28.
Rxd8 Rxd8 29.Bf3 Qc5 30.a4 c6 31.Re1 Rd6 32.Kg2 Rf6 33.b3 Qb4 34.Rf1 Rg6 
35.Bg4 Rd6 36.Rd1 Rd8 37.Rd2 Qc5 38.Kf1 Rb8 39.Kg2 Rb7 40.Kf1 Qb4 41.Be2 
Rc7 42.Rd1 Qd6 43.Rc1 b5 44.cxb5 Qf6 45.f3 Ba7 46.Rd1 Bb6 47.Qd2 cxb5 48.
Qd6 Qxd6 49.Rxd6 bxa4 50.bxa4 Bd4 51.Bd1 Rb7 52.Rc6 h5 53.Ke2 Rb2+ 54.Rc2 
Rb3 55.g4 h4 56.Rc6 Re3+ 57.Kd2 Ra3 58.Ke2 Bc3 59.Bc2 Bb4 60.Bd1 Ra2+ 61.
Bc2 Kf8 62.Rc8+ Ke7 63.Kd3 Ra1 64.Rc7+ Ke8 65.Bb3 Rh1 66.Rxf7 Rxh3 67.Rf5 
Be7 68.Ke2 Rh2+ 69.Kf1 Rb2 70.Bd5 h3 71.Kg1 Bc5+ 72.Kh1 Be3 73.Rxe5+ Kd8 
74.Rf5 Bf4 75.Rxf4 gxf4 76.e5 Ke7 77.Bc4 Rd2 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Stangl, Markus"]
[Black "Hernandez, Gilberto"]
[Result "1/2-1/2"]
[WhiteElo "2375"]
[BlackElo "2300"]
[ECO "E62"]
[EventDate "1989.08.??"]
[PlyCount "81"]

1.Nf3 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.d4 d6 6.O-O Nc6 7.Nc3 Bg4 8.d5 Na5 
9.b3 c5 10.dxc6 bxc6 11.Bb2 Rb8 12.Qd2 Qc7 13.Rac1 h6 14.Rfd1 Rfd8 15.h3 
Bf5 16.Nd4 Bd7 17.Ba3 Nb7 18.Nc2 Ra8 19.Ne3 Be8 20.Ng4 Nxg4 21.hxg4 Bd7 
22.Bf3 f5 23.gxf5 gxf5 24.e4 Rf8 25.c5 fxe4 26.Bxe4 Bg4 27.cxd6 exd6 28.
Re1 Qd7 29.Na4 Bf3 30.Bb2 Rae8 31.Bxf3 Rxf3 32.Rxe8+ Qxe8 33.Bxg7 Kxg7 34.
Qd4+ Rf6 35.Qg4+ Kh7 36.Kg2 Nd8 37.Rc3 h5 38.Qd4 Qf7 39.Rc2 Qg6 40.Nc3 d5 
41.Rd2 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Rodriguez Vila, Andres"]
[Black "Wessman, Richard"]
[Result "1/2-1/2"]
[WhiteElo "2295"]
[BlackElo "2370"]
[ECO "C26"]
[EventDate "1989.08.??"]
[PlyCount "87"]

1.e4 e5 2.Nc3 Nf6 3.g3 Bc5 4.Bg2 Nc6 5.d3 h6 6.Nge2 a6 7.O-O d6 8.h3 Qe7 
9.Nd5 Nxd5 10.exd5 Nd4 11.Be3 Nxe2+ 12.Qxe2 Bxe3 13.Qxe3 O-O 14.d4 Bf5 15.
dxe5 Qxe5 16.Qxe5 dxe5 17.Rfe1 Rfe8 18.c4 Rad8 19.g4 Bd3 20.Rac1 e4 21.Rc3
g6 22.Bf1 Bxf1 23.Kxf1 f5 24.gxf5 gxf5 25.Ke2 f4 26.Rg1+ Kh7 27.Rg4 Rf8 
28.Rc1 Rf7 29.Rd1 Re8 30.d6 cxd6 31.Rxd6 e3 32.fxe3 Re5 33.b3 Rg5 34.Rd5 
Rgf5 35.b4 h5 36.Rg5 Rxg5 37.Rxg5 Kh6 38.Rd5 Kg6 39.c5 Rg7 40.a4 Kf6 41.b5
axb5 42.axb5 Rg2+ 43.Kd1 Rg1+ 44.Ke2 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Rodriguez, Daniel"]
[Black "Ruxton, Keith"]
[Result "1-0"]
[WhiteElo "2235"]
[BlackElo "2325"]
[ECO "B18"]
[EventDate "1989.08.??"]
[PlyCount "73"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.N1e2 e6 7.Nf4 Bd6 8.h4 
Bxf4 9.Bxf4 h6 10.h5 Bh7 11.c3 Nf6 12.Qb3 Qe7 13.Be5 b6 14.O-O-O O-O 15.
Bd3 Bxd3 16.Rxd3 Nbd7 17.Kb1 Ng4 18.Re1 Ngxe5 19.dxe5 Nc5 20.Qa3 Qg5 21.
Rd4 Rfd8 22.Red1 Rd5 23.b4 Nd7 24.c4 Rxd4 25.Rxd4 Qe7 26.f4 c5 27.b5 f6 
28.exf6 Nxf6 29.Rd2 e5 30.fxe5 Qxe5 31.Qd3 Rf8 32.Re2 Qf4 33.Nf5 Re8 34.
Ne7+ Kf7 35.Qg6+ Kf8 36.Qxe8+ Kxe8 37.Nd5+ 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Rios Parra, Alejandro"]
[Black "Shirov, Alexei"]
[Result "0-1"]
[BlackElo "2495"]
[ECO "B78"]
[EventDate "1989.08.??"]
[PlyCount "62"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 
Nc6 9.Bc4 Bd7 10.O-O-O Ne5 11.Bb3 Rc8 12.h4 h5 13.Bg5 Rc5 14.g4 hxg4 15.h5
Nxh5 16.Rxh5 gxh5 17.Nd5 Rxd5 18.Bxd5 gxf3 19.Nf5 Bxf5 20.exf5 Qd7 21.Qf4 
Rc8 22.Kb1 Qb5 23.f6 Qe2 24.Rc1 exf6 25.Bxf6 Bxf6 26.Qxf6 f2 27.Bg2 Qe3 
28.Qxd6 Nc4 29.Qd1 Qe5 30.c3 Qf5+ 31.Ka1 Ne3 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Serper, Grigory"]
[Black "Hokkanen, Petri"]
[Result "1-0"]
[WhiteElo "2420"]
[ECO "A18"]
[EventDate "1989.08.??"]
[PlyCount "71"]

1.c4 Nf6 2.Nc3 e6 3.e4 d5 4.e5 d4 5.exf6 dxc3 6.bxc3 Qxf6 7.d4 c5 8.Nf3 h6
9.Bd3 Nc6 10.Be4 Bd6 11.O-O O-O 12.Be3 Rd8 13.Qe2 cxd4 14.cxd4 Ne7 15.Bc1 
Ng6 16.Bb2 Nf4 17.Qe3 Bd7 18.Rab1 Nh5 19.Bxb7 Rab8 20.Be4 Rdc8 21.c5 Bf4 
22.Qa3 Bb5 23.d5 Qd8 24.Rfd1 Be2 25.Re1 exd5 26.Bf5 Bc4 27.Bxc8 Rxc8 28.
Qxa7 Ra8 29.Qe7 Qc8 30.a3 Bd3 31.Rbd1 Be4 32.Rxe4 dxe4 33.Qxe4 Rb8 34.Ba1 
f5 35.Qd5+ Kh7 36.Qf7 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Djurhuus, Rune"]
[Black "Apaza, Henry"]
[Result "1-0"]
[WhiteElo "2415"]
[ECO "B50"]
[EventDate "1989.08.??"]
[PlyCount "109"]

1.e4 c5 2.Nf3 d6 3.c3 Nf6 4.Be2 g6 5.O-O Bg7 6.Re1 O-O 7.Bf1 Nc6 8.h3 b6 
9.d4 Bb7 10.Bg5 cxd4 11.cxd4 Rc8 12.Nc3 Na5 13.Rc1 a6 14.Bd3 b5 15.Qe2 h6 
16.Bf4 Qb6 17.b3 Nc6 18.e5 Nh5 19.Be3 Qd8 20.e6 f5 21.Nh4 Nxd4 22.Bxd4 
Bxd4 23.Nxg6 Ng3 24.Qd2 Kg7 25.Nxf8 Qxf8 26.Qf4 Bxc3 27.Qxg3+ Kh8 28.Red1 
Qf6 29.Qf4 Rf8 30.Qxf5 Qxf5 31.Bxf5 b4 32.g4 d5 33.f4 d4 34.Rd3 Kg7 35.
Rcd1 Rd8 36.Kf2 a5 37.Rg3 Kf6 38.h4 Bd5 39.h5 a4 40.Bc2 axb3 41.Bxb3 Bxe6 
42.g5+ Kf5 43.Bxe6+ Kxe6 44.g6 Kf5 45.Kf3 Kf6 46.g7 Rg8 47.Rg6+ Kf7 48.Ke4
Rxg7 49.Rxg7+ Kxg7 50.Rg1+ Kf7 51.Rg6 Bd2 52.Rxh6 d3 53.Rg6 Bc1 54.Kxd3 
Bxf4 55.Kc4 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Santos, Carlos Pereira"]
[Black "Sorensen, Jan"]
[Result "0-1"]
[BlackElo "2335"]
[ECO "A59"]
[EventDate "1989.08.??"]
[PlyCount "74"]

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 g6 6.Nc3 Bxa6 7.e4 Bxf1 8.Kxf1 
d6 9.Nf3 Bg7 10.h3 O-O 11.Kg1 Nbd7 12.Kh2 Qa5 13.Re1 Rfb8 14.Re2 Ne8 15.
Rc2 Nc7 16.Bd2 Na6 17.a3 Rb3 18.Be1 Nc7 19.Nd2 Rb7 20.Nc4 Qa6 21.Qe2 Ne5 
22.Nxe5 Bxe5+ 23.g3 Qxe2 24.Rxe2 Rab8 25.Ra2 Rb3 26.Rc2 f5 27.exf5 gxf5 
28.Rd2 Kf7 29.Nd1 Bd4 30.Ne3 Bxe3 31.fxe3 Rxe3 32.Bf2 Re5 33.b4 cxb4 34.
axb4 Rxb4 35.Ra7 Nxd5 36.Ra5 Ke6 37.Bd4 Re4 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Moutousis, Konstantinos"]
[Black "Mamombe, Kudzanai"]
[Result "1-0"]
[WhiteElo "2330"]
[ECO "B86"]
[EventDate "1989.08.??"]
[PlyCount "163"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 a6 7.O-O Be7 8.Bb3 
Nc6 9.Be3 Qc7 10.f4 O-O 11.f5 Nxd4 12.Bxd4 b5 13.a3 Rd8 14.Qd3 e5 15.Be3 
Bb7 16.a4 b4 17.Nd5 Bxd5 18.exd5 Rdc8 19.Kh1 Nd7 20.Qe4 Nc5 21.Bxc5 Qxc5 
22.Rad1 a5 23.Rf3 Bf6 24.g3 Kf8 25.Kg2 Ke7 26.Rf2 Rc7 27.Re2 Rac8 28.h4 
Qb6 29.Kh3 h6 30.Rg2 Rh8 31.Rdd2 Qa6 32.Rd3 Qc8 33.Kh2 Rc5 34.Kg1 Kd7 35.
Rdd2 Qc7 36.Kf1 Rc8 37.Ke1 Qb6 38.Kd1 Qa6 39.Rge2 Ke8 40.Kc1 Qb7 41.Kb1 
Kf8 42.Ka2 Qe7 43.Rd1 Ke8 44.Qh1 Qc7 45.Rdd2 Qe7 46.Re4 Kd8 47.Qf1 Qb7 48.
Qd3 Ke8 49.Bc4 Qc7 50.Bb3 Qb7 51.Re3 Qc7 52.Rh2 Qd8 53.Ree2 Qe7 54.Qd1 Kd7
55.Qe1 Re8 56.Re4 Rec8 57.Qh1 Kd8 58.Qf1 Qd7 59.Qa6 R8c7 60.Rf2 Ra7 61.Qd3
Rac7 62.Kb1 Rc8 63.Re1 Qe7 64.Qe4 Ke8 65.Rh1 Kd8 66.Kc1 Ke8 67.Re2 Kd8 68.
Qf3 Kd7 69.Re4 Kd8 70.Kd1 Kd7 71.Rh2 Ke8 72.Qd3 Qd7 73.g4 Be7 74.Ree2 f6 
75.Reg2 Kd8 76.Ke1 Qb7 77.Kf1 Ra8 78.g5 hxg5 79.hxg5 Kd7 80.Rh7 fxg5 81.f6
Kc8 82.fxg7 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Martinez Echezarreta, Arturo"]
[Black "Imocha, Laisram"]
[Result "0-1"]
[BlackElo "2315"]
[ECO "E12"]
[EventDate "1989.08.??"]
[PlyCount "112"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.Bg5 Be7 6.Qc2 d5 7.e3 Nbd7 8.Bd3 O-O
9.cxd5 exd5 10.g4 Ne4 11.Bf4 Bb4 12.O-O Bxc3 13.bxc3 Qe7 14.Nd2 Nxd2 15.
Qxd2 c5 16.Rfe1 Rfe8 17.f3 Qf6 18.Bb5 Bc6 19.g5 Qe6 20.Bf1 Nf8 21.h4 Qg6 
22.Rad1 c4 23.Bg2 f5 24.gxf6 Qxf6 25.Qf2 Ng6 26.Bg5 Qf7 27.h5 Nf8 28.Qh4 
Ne6 29.h6 Qg6 30.Be7 gxh6 31.f4 Ng7 32.Ba3 Re6 33.e4 Rxe4 34.Rxe4 dxe4 35.
d5 Ba4 36.Re1 Nf5 37.Qf2 Re8 38.Bc1 Bd7 39.Be3 Kf7 40.Rb1 Rg8 41.Rb2 Qxg2+
42.Qxg2 Rxg2+ 43.Rxg2 Nxe3 44.Re2 Nxd5 45.Rxe4 b5 46.Rd4 Bc6 47.a4 Nxc3 
48.Rd6 Be8 49.axb5 Bxb5 50.Rxh6 Kg7 51.Re6 a5 52.Kf2 a4 53.Re1 Na2 54.Ra1 
Nb4 55.Ke2 c3+ 56.Kd1 Bc4 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Warner, Delisle"]
[Black "Brandner, Stefan"]
[Result "0-1"]
[BlackElo "2305"]
[ECO "D32"]
[EventDate "1989.08.??"]
[PlyCount "40"]

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 cxd4 5.Qxd4 Nc6 6.Qd1 exd5 7.Qxd5 Bd7 8.
Bg5 Nf6 9.Qd2 h6 10.Bh4 g5 11.Bg3 Qa5 12.e4 O-O-O 13.Nb5 Qxd2+ 14.Kxd2 
Nxe4+ 15.Kc1 a6 16.Nc3 Nxc3 17.bxc3 Ba3+ 18.Kc2 Na5 19.Bd3 Ba4+ 20.Kd2 Bb5
0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Walsh, Chris"]
[Black "Vasquez Schroder, Rodrigo"]
[Result "0-1"]
[BlackElo "2300"]
[ECO "C41"]
[EventDate "1989.08.??"]
[PlyCount "74"]

1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7 5.Bc4 Be7 6.O-O O-O 7.h3 c6 8.Bb3 b5 
9.a3 a5 10.Re1 Bb7 11.dxe5 dxe5 12.Bg5 h6 13.Bh4 Qc7 14.Nh2 Nc5 15.Ng4 
Rad8 16.Nxf6+ Bxf6 17.Qh5 Qe7 18.Bg3 Nxb3 19.cxb3 Rd2 20.Nd1 Rfd8 21.Ne3 
g6 22.Qf3 Bc8 23.Red1 Rxb2 24.Rxd8+ Qxd8 25.Rd1 Qe7 26.Ng4 Bxg4 27.Qxg4 
Qe6 28.Qxe6 fxe6 29.Rd6 Rc2 30.Rxe6 Kf7 31.Rd6 h5 32.f4 h4 33.Bh2 Be7 34.
Rd1 Bc5+ 35.Kh1 Bxa3 36.fxe5 Rc1 37.Rxc1 Bxc1 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Haughton, Richard"]
[Black "Martin, Benjamin"]
[Result "0-1"]
[BlackElo "2280"]
[ECO "E11"]
[EventDate "1989.08.??"]
[PlyCount "48"]

1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 Qe7 5.e3 Bxd2+ 6.Nbxd2 d6 7.Qc2 b6 8.Bd3
Bb7 9.O-O Nbd7 10.b4 c5 11.a3 O-O 12.Qb2 Rfd8 13.h3 Nf8 14.e4 Ng6 15.e5 
dxe5 16.Bxg6 hxg6 17.dxe5 Ne4 18.Nxe4 Bxe4 19.Nd2 Bxg2 20.Kh2 Bxf1 21.Rxf1
Qg5 22.f4 Qf5 23.Qc1 Rd3 24.Nf3 Rad8 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Torres Baldeon, Jean Pierre"]
[Black "Georges, Sascha"]
[Result "1/2-1/2"]
[BlackElo "2220"]
[ECO "A45"]
[EventDate "1989.08.??"]
[PlyCount "48"]

1.d4 Nf6 2.Bg5 g6 3.Bxf6 exf6 4.e3 Bg7 5.Bd3 d6 6.Ne2 f5 7.Ng3 c5 8.c3 Nc6
9.O-O O-O 10.Ne2 b6 11.Nd2 Bb7 12.Nf4 Bh6 13.Qf3 Qh4 14.Qg3 Qxg3 15.hxg3 
Rfe8 16.a3 a5 17.Bb5 Na7 18.a4 Nxb5 19.axb5 Bxf4 20.gxf4 Be4 21.Rac1 Bd3 
22.c4 cxd4 23.exd4 d5 24.c5 Rab8 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Dao Thien Hai"]
[Black "Mera Cedeno, Angel"]
[Result "1/2-1/2"]
[ECO "E83"]
[EventDate "1989.08.??"]
[PlyCount "100"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 Nc6 7.Bd3 e5 8.d5 Ne7 9.
Nge2 Ne8 10.Qd2 f5 11.O-O-O f4 12.Bf2 a6 13.Kb1 c5 14.Rdg1 Rb8 15.g3 Qa5 
16.gxf4 exf4 17.Bh4 Rf7 18.Qc1 b5 19.Be1 b4 20.Nd1 g5 21.Rxg5 Ng6 22.e5 
Nxe5 23.Be4 Kh8 24.Rhg1 h6 25.Rxg7 Nxg7 26.Nxf4 Bf5 27.Ng6+ Kh7 28.Nxe5 
Bxe4+ 29.fxe4 dxe5 30.Nf2 Qb6 31.Nd3 Re8 32.Qe3 b3 33.Qxc5 Qxc5 34.Nxc5 
Rc8 35.Bb4 a5 36.Ba3 bxa2+ 37.Kxa2 Rfc7 38.Kb3 Rxc5 39.Bxc5 Rxc5 40.Kc3 
Ne8 41.b4 Rc8 42.c5 Nd6 43.Kd3 Nb7 44.Ra1 axb4 45.Ra7 Rc7 46.Kd2 Rg7 47.c6
Nd6 48.Ra4 Nxe4+ 49.Ke3 Nd6 50.Rxb4 Kg6 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "De Meyer, Geert"]
[Black "Cadena, Juan"]
[Result "1-0"]
[ECO "D73"]
[EventDate "1989.08.??"]
[PlyCount "73"]

1.d4 d5 2.Nf3 Nf6 3.c4 c6 4.g3 g6 5.Bg2 Bg7 6.Qb3 dxc4 7.Qxc4 Be6 8.Qc2 
Na6 9.Nc3 O-O 10.O-O Rc8 11.e4 Bg4 12.Be3 Qa5 13.h3 Bxf3 14.Bxf3 e5 15.
dxe5 Qxe5 16.Rad1 Nh5 17.Bg2 Qa5 18.Rd2 Nc7 19.Rfd1 Ne6 20.Qb3 b6 21.Qc4 
Rc7 22.b4 Qe5 23.Ne2 Rfc8 24.f4 Qf6 25.e5 Qe7 26.g4 b5 27.Qb3 Nhxf4 28.
Nxf4 Nxf4 29.Bxf4 Bxe5 30.Be3 Kg7 31.Re2 Qf6 32.Rf1 Qd6 33.Rd2 Qe7 34.Re1 
f6 35.Bc5 Qf7 36.Qxf7+ Rxf7 37.Red1 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Miguel Lago, Victor Placido"]
[Black "Melgosa, Marcio"]
[Result "1-0"]
[ECO "D76"]
[EventDate "1989.08.??"]
[PlyCount "73"]

1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.c4 O-O 5.O-O d5 6.cxd5 Nxd5 7.d4 Nb6 8.Nc3 
Nc6 9.d5 Na5 10.e4 c6 11.Bg5 Bg4 12.h3 Bxf3 13.Qxf3 cxd5 14.Nxd5 Nxd5 15.
Rad1 Qb6 16.exd5 Rfe8 17.b3 h6 18.Be3 Qb4 19.Rd3 Rac8 20.Bd2 Qb5 21.a4 Qa6
22.Re1 b6 23.Bb4 Qb7 24.Rde3 Bf6 25.Qg4 Qc7 26.d6 h5 27.Qf4 Qd7 28.dxe7 
Bg7 29.Rf3 f5 30.Qg5 Kh7 31.g4 Nc6 32.gxf5 Nxb4 33.Qxg6+ Kh8 34.f6 Bxf6 
35.Qxf6+ Kh7 36.Qf7+ Kh6 37.Rf6+ 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Rodrigues, Adriano von Pfuhl"]
[Black "Castillo Melendez, Otto Rene"]
[Result "1-0"]
[ECO "E18"]
[EventDate "1989.08.??"]
[PlyCount "79"]

1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.d4 b6 7.Nc3 Bb7 8.cxd5 
exd5 9.Bf4 c6 10.Qa4 Nbd7 11.Rfd1 Re8 12.Ne5 b5 13.Qc2 Nf8 14.Rac1 Ng6 15.
Nxg6 hxg6 16.Nb1 Bd6 17.Bxd6 Qxd6 18.e3 Rac8 19.Qc5 Qb8 20.Nd2 Rc7 21.Qb4 
Bc8 22.Nb3 Bf5 23.Nc5 Qb6 24.Qd2 g5 25.h3 g6 26.g4 Bd7 27.Rc2 Kg7 28.Rdc1 
Re7 29.f3 Be6 30.e4 Nh7 31.e5 a5 32.f4 gxf4 33.Qxf4 Rc8 34.h4 Qd8 35.g5 
Bf5 36.Rf2 Re8 37.Re1 Qe7 38.Qg3 Rh8 39.Bf3 Rhe8 40.Bg4 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Segovia, Javier"]
[Black "Parodi, Rafael"]
[Result "1-0"]
[ECO "C05"]
[EventDate "1989.08.??"]
[PlyCount "55"]

1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.c3 c5 6.f4 Nc6 7.Ndf3 Be7 8.Bd3 f6 
9.Ne2 O-O 10.h4 cxd4 11.cxd4 h6 12.h5 Nb6 13.O-O f5 14.g4 fxg4 15.Nh2 g3 
16.Ng4 Qc7 17.Bb1 Kf7 18.Qc2 Ke8 19.Qg6+ Rf7 20.f5 Nd8 21.Nf4 Qc6 22.f6 
Bf8 23.Qh7 Bd7 24.Bg6 Qc4 25.Be3 Bc6 26.fxg7 Bxg7 27.Qxg7 Rc8 28.Bxf7+ 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "6"]
[White "Zulu, David"]
[Black "Chung, Ronnie"]
[Result "0-1"]
[ECO "E21"]
[EventDate "1989.08.??"]
[PlyCount "62"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 b6 5.a3 Bxc3+ 6.bxc3 Ne4 7.Qc2 Bb7 8.e3 
O-O 9.Bd3 f5 10.Bb2 d6 11.O-O-O Nd7 12.Qe2 c5 13.Kb1 a6 14.Rhg1 Bc6 15.g4 
fxg4 16.Qc2 Nxf2 17.Qxf2 Bxf3 18.Rd2 Nf6 19.Rc2 Ne4 20.Qe1 d5 21.Ka1 Qd7 
22.cxd5 exd5 23.c4 b5 24.cxb5 c4 25.Rxc4 dxc4 26.Bxc4+ Kh8 27.bxa6 Rac8 
28.Bd3 Qd5 29.a4 Qb3 30.Bb5 Rc2 31.Qb1 Nc3 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Dreev, Alexei"]
[Black "Ulybin, Mikhail"]
[Result "0-1"]
[WhiteElo "2570"]
[BlackElo "2495"]
[ECO "B80"]
[EventDate "1989.08.??"]
[PlyCount "116"]

1.d4 e6 2.Nf3 c5 3.e4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.g3 Be7 7.Bg2 O-O 8.O-O 
Nc6 9.Nb3 Bd7 10.Be3 Ne5 11.Qe2 Qc7 12.Nd4 a6 13.a4 Rfc8 14.Rad1 Nc4 15.
Bc1 Nb6 16.a5 Nc4 17.Nb3 Rab8 18.f4 Be8 19.g4 Nxa5 20.Nxa5 Qxa5 21.g5 Nd7 
22.Bh3 Rxc3 23.bxc3 Qxc3 24.Rf3 Qc5+ 25.Kh1 b5 26.Bb2 b4 27.Bg2 a5 28.Rh3 
Rc8 29.Rg1 Qxc2 30.Qh5 Nf8 31.Bf6 Rc7 32.Bxe7 Rxe7 33.g6 fxg6 34.Qxa5 Qc5 
35.Qxc5 dxc5 36.Rc1 Ra7 37.e5 Bb5 38.Rb3 Ra4 39.Rcb1 Bc4 40.R3b2 Bd3 41.
Bc6 Ra6 42.Rd1 Rxc6 43.Rxd3 c4 44.Rd1 b3 45.Rc1 Nd7 46.Kg2 g5 47.Kf3 gxf4 
48.Kxf4 Rc5 49.Ke4 Rxe5+ 50.Kd4 Rd5+ 51.Kc3 Ne5 52.Rf1 Rd3+ 53.Kb4 Re3 54.
Rd2 h6 55.h4 Kh7 56.Ka3 c3 57.Rd4 c2 58.h5 Nd3 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Shirov, Alexei"]
[Black "Stangl, Markus"]
[Result "1-0"]
[WhiteElo "2495"]
[BlackElo "2375"]
[ECO "B06"]
[EventDate "1989.08.??"]
[PlyCount "49"]

1.d4 g6 2.e4 d6 3.Nc3 Bg7 4.f4 c6 5.Nf3 Bg4 6.Be3 Qb6 7.Qd2 Nf6 8.Be2 d5 
9.e5 Nfd7 10.O-O-O Qa5 11.Ng5 Bxe2 12.Qxe2 h6 13.Nxf7 Kxf7 14.f5 gxf5 15.
Qh5+ Kg8 16.Rdf1 e6 17.g4 Qd8 18.gxf5 exf5 19.Rhg1 Qe7 20.Rxg7+ Kxg7 21.
Rg1+ Kf8 22.Bxh6+ Rxh6 23.Qxh6+ Ke8 24.Rg7 Qb4 25.a3 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Sorensen, Jan"]
[Black "Polgar, Zsuzsa"]
[Result "0-1"]
[WhiteElo "2335"]
[BlackElo "2520"]
[ECO "C29"]
[EventDate "1989.08.??"]
[PlyCount "176"]

1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.Nf3 Be7 6.Qe2 Nxc3 7.dxc3 c5 8.Bf4
Nc6 9.O-O-O Be6 10.Kb1 Qa5 11.a3 h6 12.h4 Rb8 13.Qb5 Qc7 14.Qd3 b5 15.g3 
b4 16.axb4 cxb4 17.Nd4 Nxd4 18.cxd4 b3 19.Bh3 bxc2+ 20.Qxc2 Qxc2+ 21.Kxc2 
Kd7 22.Bd2 Bd8 23.Rdf1 Bxh3 24.Rxh3 Ke6 25.h5 Bb6 26.Kd3 Rhc8 27.Bc3 a5 
28.g4 Bd8 29.Ra1 Rc4 30.Rhh1 a4 31.Ra2 Be7 32.Rha1 a3 33.Rb1 Bb4 34.Rc1 
Rbc8 35.Raa1 R8c6 36.Rab1 Ba5 37.Ra1 Bb4 38.Rab1 Rc7 39.Ra1 Rc8 40.Rab1 
R8c7 41.Ra1 Kd7 42.Rab1 R7c6 43.Ra1 Ke8 44.Rab1 Kd8 45.Ra1 Kd7 46.Rab1 Kc8
47.Ra1 Kc7 48.Rab1 Kd7 49.Ra1 Kd8 50.Rab1 Kc8 51.Ra1 Kd7 52.Rab1 g6 53.Ra1
gxh5 54.gxh5 Kc8 55.Rab1 Kb8 56.Ra1 Kc8 57.Rab1 Kd7 58.Ra1 Rc7 59.Rab1 Ke6
60.Ra1 Kd7 61.Rab1 Rc8 62.Ra1 R8c6 63.Rab1 Rc7 64.Ra1 Rc8 65.Rab1 Ke6 66.
Ra1 Rg8 67.Rg1 Rb8 68.Rgc1 Be7 69.Rab1 Rb3 70.Kc2 Rxb2+ 71.Rxb2 axb2 72.
Kxb2 Bb4 73.Bxb4 Rxb4+ 74.Ka3 Rxd4 75.Rc6+ Kxe5 76.Rxh6 Kf5 77.Kb3 Kg5 78.
Rh8 Rh4 79.Rd8 Rxh5 80.Rxd5+ f5 81.Kc3 Rh8 82.Kd3 Re8 83.Rd7 Kg4 84.Rg7+ 
Kf3 85.Rd7 f4 86.Kd2 Kf2 87.Rd6 f3 88.Rd7 Kf1 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Koch, Jean-Rene"]
[Black "Spasov, Vasil"]
[Result "1/2-1/2"]
[WhiteElo "2420"]
[BlackElo "2430"]
[ECO "B33"]
[EventDate "1989.08.??"]
[PlyCount "76"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 
b5 9.Bxf6 gxf6 10.Nd5 Bg7 11.Bd3 Ne7 12.Nxe7 Qxe7 13.c3 f5 14.Nc2 O-O 15.
O-O Bb7 16.exf5 d5 17.Qh5 e4 18.Rfe1 Rac8 19.Rad1 Rc6 20.g3 Bf6 21.Qg4+ 
Kh8 22.Bf1 Qe5 23.Qe2 Rd6 24.Bg2 Bg7 25.a3 Re8 26.Ne3 Qf6 27.Qh5 Qe7 28.
Nxd5 Rxd5 29.Rxd5 Bxd5 30.f6 Qe5 31.fxg7+ Kxg7 32.Qxe5+ Rxe5 33.Re3 f5 34.
f3 Kf6 35.fxe4 fxe4 36.Kf2 Re6 37.Bh3 Rd6 38.Ke1 Ke5 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Kontic, Vladimir"]
[Black "Wessman, Richard"]
[Result "0-1"]
[WhiteElo "2395"]
[BlackElo "2370"]
[ECO "C55"]
[EventDate "1989.08.??"]
[PlyCount "76"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d3 Be7 5.c3 O-O 6.O-O d5 7.exd5 Nxd5 8.Re1 
Bg4 9.h3 Bh5 10.Bb3 Kh8 11.Bc2 f5 12.Nbd2 g5 13.Nf1 Bf6 14.Ng3 Bg6 15.Nd2 
Nf4 16.Nc4 Qd7 17.a4 a5 18.Bxf4 exf4 19.Nf1 g4 20.Qc1 f3 21.gxf3 gxh3 22.
Qf4 Rg8 23.Kh2 Bf7 24.Ng3 Bg5 25.Qxf5 Qxf5 26.Nxf5 Bf4+ 27.Kxh3 Rg5 28.Ng3
Rag8 29.Rg1 Bd5 30.Kg2 h5 31.Kf1 Bxf3 32.Bd1 Bd5 33.Ne2 Rxg1+ 34.Nxg1 h4 
35.Ne3 Be6 36.Bf3 h3 37.d4 h2 38.Ne2 Bh3+ 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Boissonet, Carlos"]
[Black "Gdanski, Jacek"]
[Result "0-1"]
[WhiteElo "2340"]
[BlackElo "2405"]
[ECO "E90"]
[EventDate "1989.08.??"]
[PlyCount "84"]

1.d4 Nf6 2.c4 c5 3.d5 g6 4.Nc3 d6 5.Nf3 Bg7 6.e4 O-O 7.Bd3 e5 8.Bg5 h6 9.
Bh4 a6 10.Nd2 Qe8 11.Bxf6 Bxf6 12.Be2 Bg7 13.h4 f5 14.h5 Nd7 15.hxg6 Nf6 
16.Bh5 b5 17.exf5 Bxf5 18.g4 b4 19.gxf5 bxc3 20.Nf1 cxb2 21.Rb1 e4 22.Ne3 
Qe5 23.Qd2 Rab8 24.Bd1 Qf4 25.Ba4 Rb4 26.Bc6 Qf3 27.Rg1 h5 28.Qe2 Rfb8 29.
Kd1 Bh6 30.a3 Rb3 31.Qxf3 exf3 32.Rg3 Ne4 33.Rxf3 Nc3+ 34.Kc2 Nxb1 35.Kxb1
Rxa3 36.Bb5 axb5 37.Kxb2 Raa8 38.f6 bxc4+ 39.Kc3 Bxe3 40.fxe3 Ra3+ 41.Kc2 
Ra2+ 42.Kc3 Rg2 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Van Wely, Loek"]
[Black "Serper, Grigory"]
[Result "1/2-1/2"]
[WhiteElo "2320"]
[BlackElo "2420"]
[ECO "E20"]
[EventDate "1989.08.??"]
[PlyCount "96"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.g3 c5 5.Nf3 cxd4 6.Nxd4 Ne4 7.Qd3 Bxc3+ 8.
bxc3 Nc5 9.Qd2 b6 10.Nb5 O-O 11.Nd6 Bb7 12.Nxb7 Nxb7 13.Ba3 Re8 14.Bg2 Nc6
15.Rd1 Qf6 16.O-O Red8 17.Qc2 Rac8 18.Qa4 Nba5 19.Bb4 Nxc4 20.Bxc6 dxc6 
21.Qa6 c5 22.Qxc4 cxb4 23.Qxb4 g6 24.Qa4 Qe7 25.Rxd8+ Rxd8 26.Rd1 Rxd1+ 
27.Qxd1 Qc5 28.Qa4 a5 29.c4 Kf8 30.Qb3 Ke7 31.Qd3 Qe5 32.Kg2 Qb2 33.a3 Qe5
34.h4 h5 35.f4 Qd6 36.Kf3 Kd7 37.Ke3 Kc6 38.Kd2 Qxd3+ 39.exd3 b5 40.Kc3 
Kc5 41.d4+ Kb6 42.cxb5 Kxb5 43.Kb3 Kb6 44.Kc4 Kc6 45.a4 f6 46.Kc3 Kd5 47.
Kd3 f5 48.Kc3 Ke4 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Imocha, Laisram"]
[Black "Djurhuus, Rune"]
[Result "1/2-1/2"]
[WhiteElo "2315"]
[BlackElo "2415"]
[ECO "A85"]
[EventDate "1989.08.??"]
[PlyCount "110"]

1.d4 e6 2.Nf3 f5 3.c4 Nf6 4.Nc3 Bb4 5.g3 O-O 6.Bg2 d5 7.O-O c6 8.Qb3 Be7 
9.a4 a5 10.Bf4 h6 11.Bxb8 Rxb8 12.Ne5 Qe8 13.cxd5 cxd5 14.Qb5 Bb4 15.Qxe8 
Rxe8 16.Nb5 Rd8 17.Rfc1 Ne8 18.e3 Bd7 19.Bf1 Bxb5 20.Bxb5 Bd6 21.Bd7 Nc7 
22.Rxc7 Bxc7 23.Bxe6+ Kf8 24.Ng6+ Ke8 25.Bxf5 b5 26.b3 Kf7 27.g4 bxa4 28.
bxa4 Bd6 29.Rc1 Rb4 30.Ne5+ Bxe5 31.dxe5 g6 32.Rc7+ Kf8 33.Be6 Rxa4 34.
Rf7+ Ke8 35.Rg7 Re4 36.Rxg6 Rxe5 37.Rxh6 Rd6 38.Rh8+ Ke7 39.Bf5 d4 40.exd4
Rxd4 41.Ra8 Kd6 42.Kg2 Rc5 43.Ra6+ Ke5 44.h4 Kf4 45.h5 Rd1 46.Rf6 Ra1 47.
h6 Rcc1 48.Bb1+ Kxg4 49.f3+ Kg5 50.Rg6+ Kf4 51.Rg4+ Ke3 52.Re4+ Kd2 53.
Rd4+ Ke3 54.Re4+ Kd2 55.Rd4+ Ke3 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Manor, Ilan"]
[Black "Rodriguez, Daniel"]
[Result "1-0"]
[WhiteElo "2445"]
[BlackElo "2235"]
[ECO "E01"]
[EventDate "1989.08.??"]
[PlyCount "82"]

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 c6 5.Nf3 Nbd7 6.Qc2 Bd6 7.O-O O-O 8.Nbd2 
Re8 9.Re1 e5 10.dxe5 Nxe5 11.cxd5 Nxd5 12.Nxe5 Bxe5 13.Nc4 Bf6 14.Bd2 Nb6 
15.Na5 Qc7 16.Rab1 Be6 17.b4 a6 18.a3 Rad8 19.Bc3 Bxc3 20.Qxc3 Nd5 21.Qc2 
f5 22.e3 Nf6 23.Nb3 Ne4 24.Nd4 Qe5 25.Rbd1 Bd5 26.f3 Nd6 27.f4 Qf6 28.
Bxd5+ cxd5 29.Qc5 Nc4 30.Kf2 Nxa3 31.Qc7 b5 32.Ra1 Nc4 33.Qa7 Rd6 34.Ra2 
g6 35.Qc5 Red8 36.Rea1 Kg7 37.Rxa6 Rxa6 38.Rxa6 Qxa6 39.Qe7+ Kh6 40.Qg5+ 
Kg7 41.Nxf5+ Kf7 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Ruxton, Keith"]
[Black "Hsu Li Yang"]
[Result "0-1"]
[WhiteElo "2325"]
[BlackElo "2315"]
[ECO "B01"]
[EventDate "1989.08.??"]
[PlyCount "26"]

1.e4 d5 2.exd5 Nf6 3.c4 e6 4.dxe6 Bxe6 5.d4 Bb4+ 6.Nc3 Ne4 7.Qd3 Bf5 8.Qf3
Qxd4 9.Ne2 Qd7 10.a3 Nc6 11.Bf4 Ne5 12.Qe3 Nd3+ 13.Kd1 Bc5 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Hernandez, Gilberto"]
[Black "Rodriguez Vila, Andres"]
[Result "1/2-1/2"]
[WhiteElo "2300"]
[BlackElo "2295"]
[ECO "C19"]
[EventDate "1989.08.??"]
[PlyCount "84"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 Ne7 5.a3 Bxc3+ 6.bxc3 c5 7.Nf3 Qa5 8.Bd2 
Nbc6 9.a4 Bd7 10.Bb5 c4 11.O-O O-O-O 12.Qe2 h6 13.Rfb1 g5 14.h4 Rdg8 15.
Bxc6 Bxc6 16.hxg5 Qd8 17.gxh6 Nf5 18.g3 Nxh6 19.Kg2 Nf5 20.a5 Rg7 21.a6 b6
22.Rh1 Bb5 23.Rxh8 Qxh8 24.Ng5 Kd7 25.Rh1 Qg8 26.Qh5 Ba4 27.Rc1 Rg6 28.Bf4
Rg7 29.Bd2 Kc7 30.g4 Ne7 31.f4 b5 32.Kf3 Kb6 33.Qh1 Kxa6 34.Ra1 Nc6 35.Bc1
Rxg5 36.fxg5 Qg6 37.Qd1 Qe4+ 38.Kg3 Ne7 39.Ra2 Ng6 40.Bd2 Kb6 41.Qb1 Bb3 
42.Rb2 Ba4 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Apaza, Henry"]
[Black "Moutousis, Konstantinos"]
[Result "0-1"]
[BlackElo "2330"]
[ECO "E29"]
[EventDate "1989.08.??"]
[PlyCount "58"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.e3 O-O 7.Bd3 Nc6 8.Ne2 
d6 9.O-O e5 10.Qc2 Re8 11.e4 cxd4 12.cxd4 exd4 13.Bb2 Qb6 14.f4 Nxe4 15.
Kh1 Nf6 16.Rab1 Qc5 17.Ba1 a6 18.Ng3 h6 19.Ne4 Nxe4 20.Bxe4 Rxe4 21.Qxe4 
Bf5 22.Qe2 Bxb1 23.Rxb1 Qxa3 24.Bb2 Qe3 25.Qxe3 dxe3 26.Re1 Na5 27.Rxe3 
Nxc4 28.Rb3 Nxb2 29.Rxb2 b5 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Brandner, Stefan"]
[Black "Huda, Rehan"]
[Result "1/2-1/2"]
[WhiteElo "2305"]
[ECO "B83"]
[EventDate "1989.08.??"]
[PlyCount "96"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 Nc6 7.Be3 Be7 8.O-O 
O-O 9.f4 e5 10.fxe5 dxe5 11.Nf5 Bxf5 12.Rxf5 Qa5 13.Kh1 Rad8 14.Bd3 Nb4 
15.Bg5 h6 16.Bxf6 Bxf6 17.Qg4 Bg5 18.Raf1 Nxd3 19.cxd3 Rxd3 20.Nd5 Qd8 21.
Qe2 Rd2 22.Qb5 b6 23.Rxe5 g6 24.Qb4 Rd3 25.Qc4 Rd2 26.Qc3 f6 27.Re6 Qd7 
28.Nxf6+ Bxf6 29.Rexf6 Rxf6 30.Qxf6 Qg7 31.Qe6+ Kh7 32.h3 Rd7 33.b4 Re7 
34.Qd5 Rd7 35.Qc4 Rc7 36.Qe2 Qe5 37.Qd3 Re7 38.Qd5 Qxd5 39.exd5 Rd7 40.Rc1
Kg7 41.Rc6 b5 42.Rc5 a6 43.Kg1 Kf6 44.Rc6+ Kf5 45.g4+ Kf4 46.Rxg6 Rxd5 47.
Rxa6 Kg3 48.Ra3+ Kf4 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Vasquez Schroder, Rodrigo"]
[Black "Martinez Echezarreta, Arturo"]
[Result "1-0"]
[WhiteElo "2300"]
[ECO "C17"]
[EventDate "1989.08.??"]
[PlyCount "57"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 Ne7 5.Bd2 c5 6.Nb5 Bxd2+ 7.Qxd2 O-O 8.c3 
Nbc6 9.f4 cxd4 10.cxd4 Nf5 11.Nf3 Qb6 12.g4 Nfe7 13.Bd3 f6 14.exf6 Rxf6 
15.Nc3 Bd7 16.Ne2 Nb4 17.Bb1 Raf8 18.Ne5 Be8 19.g5 Rf5 20.Bxf5 Nxf5 21.O-O
Bh5 22.Nd7 Qb5 23.Nxf8 Bxe2 24.Rf2 Bg4 25.a4 Qc4 26.Rc1 Qxd4 27.Rc8 Kf7 
28.Nd7 Nd3 29.Qxd3 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Martin, Benjamin"]
[Black "Rios Parra, Alejandro"]
[Result "0-1"]
[WhiteElo "2280"]
[ECO "A61"]
[EventDate "1989.08.??"]
[PlyCount "90"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.Bf4 a6 8.a4 Bg7 
9.e4 O-O 10.Nd2 Nh5 11.Be3 Bd4 12.Nc4 Bxe3 13.Nxe3 Nd7 14.g3 b6 15.Bg2 Ra7
16.O-O Ng7 17.f4 f5 18.Nc4 Qf6 19.Re1 Re8 20.Kh1 h5 21.exf5 Rxe1+ 22.Qxe1 
gxf5 23.Qe3 Rb7 24.Re1 Nf8 25.Bf3 Ng6 26.Qd2 h4 27.Kg2 Bd7 28.Qd3 Rb8 29.
Na3 b5 30.axb5 axb5 31.Naxb5 Bxb5 32.Nxb5 Qxb2+ 33.Be2 Qf6 34.Qf3 Ra8 35.
Bc4 Ra4 36.Qd3 Nh5 37.Rf1 Ra1 38.Rxa1 Ngxf4+ 39.gxf4 Nxf4+ 40.Kh1 Nxd3 41.
Ra8+ Kg7 42.Bxd3 Qe5 43.Ra7+ Kf6 44.Kg1 Qe3+ 45.Kh1 Qxd3 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Georges, Sascha"]
[Black "Miguel Lago, Victor Placido"]
[Result "0-1"]
[WhiteElo "2220"]
[ECO "A37"]
[EventDate "1989.08.??"]
[PlyCount "80"]

1.c4 g6 2.Nc3 Bg7 3.g3 c5 4.Bg2 Nc6 5.Nf3 e6 6.d4 Nxd4 7.Nxd4 cxd4 8.Ne4 
d5 9.cxd5 exd5 10.Qa4+ Kf8 11.Nc5 Bf6 12.h4 h5 13.Bg5 Bxg5 14.hxg5 Qxg5 
15.Qxd4 Nf6 16.Rd1 b6 17.Nd3 Kg7 18.Nf4 Bb7 19.Rh4 Rhe8 20.Bf3 Rac8 21.
Bxh5 Rc4 22.Qd2 Rxf4 23.Rxf4 gxh5 24.Ra4 Qxd2+ 25.Rxd2 a5 26.b4 Bc6 27.Ra3
a4 28.Rc3 Bb5 29.Rc7 Bc4 30.a3 Ne4 31.Rc2 b5 32.e3 Rd8 33.Re7 Kf6 34.Rb7 
d4 35.Rb6+ Kg7 36.exd4 Rxd4 37.f3 Nxg3 38.Rg2 h4 39.Rc6 Rd3 40.Rc5 Rxa3 
0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Cadena, Juan"]
[Black "Haughton, Richard"]
[Result "1-0"]
[ECO "B72"]
[EventDate "1989.08.??"]
[PlyCount "43"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be2 Bg7 7.Be3 O-O 8.Qd2 
Re8 9.h4 Nc6 10.h5 Bd7 11.hxg6 hxg6 12.O-O-O Rc8 13.Bh6 Nxe4 14.Nxe4 Bxd4 
15.c3 Qa5 16.Bc4 Bh8 17.Bf8 g5 18.Rxh8+ Kxh8 19.Bd5 Qxd5 20.Qxd5 Ne5 21.
Nxd6 exd6 22.Bxd6 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Castillo Melendez, Otto Rene"]
[Black "Segovia, Javier"]
[Result "1-0"]
[ECO "C15"]
[EventDate "1989.08.??"]
[PlyCount "49"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Ne2 dxe4 5.a3 Be7 6.Nxe4 Nc6 7.Qd3 Nf6 8.Nxf6+
Bxf6 9.Be3 O-O 10.O-O-O e5 11.d5 Ne7 12.Ng3 Ng6 13.Qe4 Bg5 14.Nf5 Bxe3+ 
15.fxe3 Ne7 16.g4 Bxf5 17.gxf5 f6 18.Rg1 Kh8 19.Rg3 Qd7 20.Bd3 Rad8 21.
Rdg1 Rg8 22.Qh4 h6 23.Rxg7 Nxf5 24.Rxg8+ Rxg8 25.Qxf6+ 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Chung, Ronnie"]
[Black "Rodrigues, Adriano von Pfuhl"]
[Result "0-1"]
[ECO "A08"]
[EventDate "1989.08.??"]
[PlyCount "61"]

1.e4 e6 2.d3 d5 3.Nd2 c5 4.Ngf3 Nc6 5.g3 Bd6 6.Bg2 Nge7 7.O-O O-O 8.Re1 
Qc7 9.Nf1 d4 10.N3d2 e5 11.Nc4 Be6 12.Nxd6 Qxd6 13.f4 f6 14.f5 Bf7 15.Kh1 
c4 16.g4 Rac8 17.Ng3 cxd3 18.cxd3 Nb4 19.Re2 Qa6 20.Rd2 Nxa2 21.Ne2 Qb6 
22.h4 Nxc1 23.Nxc1 Rc7 24.g5 Rfc8 25.Bf1 Kh8 26.Rg2 g6 27.h5 gxf5 28.g6 
Be6 29.Be2 Qxb2 30.Bf1 Qxa1 31.gxh7 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Hokkanen, Petri"]
[Black "Santos, Carlos Pereira"]
[Result "1/2-1/2"]
[ECO "D31"]
[EventDate "1989.08.??"]
[PlyCount "128"]

1.d4 d5 2.Nf3 c6 3.c4 e6 4.Nc3 dxc4 5.a4 Bb4 6.e4 b5 7.Qc2 Nf6 8.Bd2 a5 9.
Be2 Bb7 10.O-O Nbd7 11.e5 Nd5 12.axb5 N7b6 13.bxc6 Bxc6 14.Ne4 O-O 15.Bg5 
Be7 16.Bxe7 Qxe7 17.Nfd2 Rfc8 18.Nd6 Nf4 19.N2e4 Bxe4 20.Qxe4 Nxe2+ 21.
Qxe2 Rc6 22.Rac1 Rxd6 23.exd6 Qxd6 24.Qe5 Qxe5 25.dxe5 Na4 26.Rxc4 Nxb2 
27.Rd4 a4 28.Ra1 g6 29.g3 a3 30.f4 h5 31.Rb4 Ra5 32.Kf1 Ra6 33.Ke2 Kg7 34.
Rb3 Nc4 35.Rc3 Nb6 36.Raxa3 Rxa3 37.Rxa3 Nd5 38.Kf3 Ne7 39.h3 Nd5 40.g4 
hxg4+ 41.hxg4 Ne7 42.Ke4 Kf8 43.Kd4 Kg7 44.Kc5 g5 45.Kd6 Ng6 46.f5 exf5 
47.gxf5 Nh4 48.f6+ Kg6 49.e6 Nf5+ 50.Ke5 fxe6 51.Kxe6 Nd4+ 52.Ke5 Nc6+ 53.
Ke4 Nd8 54.Rf3 Nf7 55.Kd5 g4 56.Rf1 g3 57.Ke6 Ng5+ 58.Ke7 Kh5 59.Rf5 g2 
60.f7 g1=Q 61.f8=Q Qa7+ 62.Kd6 Qa3+ 63.Kd5 Qxf8 64.Rxf8 Kg4 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Mamombe, Kudzanai"]
[Black "Warner, Delisle"]
[Result "1-0"]
[ECO "A04"]
[EventDate "1989.08.??"]
[PlyCount "87"]

1.e4 e6 2.d3 c5 3.Nf3 Nc6 4.g3 g6 5.Bg2 Bg7 6.O-O d6 7.c3 Nge7 8.Bg5 O-O 
9.Re1 e5 10.Nbd2 f6 11.Be3 Be6 12.Nf1 h6 13.Qd2 Kh7 14.h4 f5 15.N1h2 Qd7 
16.Rad1 Rf7 17.h5 Raf8 18.hxg6+ Nxg6 19.exf5 Bxf5 20.c4 Bh3 21.a3 Nd4 22.
Bxd4 cxd4 23.Re4 Bf5 24.Nh4 Bf6 25.Nxf5 Qxf5 26.Nf3 Rg7 27.Re2 Rfg8 28.Nh2
Bg5 29.Qb4 Be7 30.Qxb7 Kh8 31.Be4 Qh5 32.Bf3 Qg5 33.Re4 Nf4 34.Kf1 Qf5 35.
gxf4 Qh3+ 36.Ke2 Bh4 37.Qd5 Qxh2 38.Rf1 Rg1 39.Qxd6 Kh7 40.Rxe5 Rd8 41.
Be4+ Kg8 42.Qxh6 Rxf1 43.Qg6+ Kf8 44.Rf5+ 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Melgosa, Marcio"]
[Black "Dao Thien Hai"]
[Result "0-1"]
[ECO "B21"]
[EventDate "1989.08.??"]
[PlyCount "66"]

1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 g6 6.Bc4 Bg7 7.e5 Nh6 8.O-O 
O-O 9.Bf4 a6 10.Re1 Nf5 11.g4 Nh6 12.Qd2 Nxg4 13.h3 d6 14.hxg4 Bxg4 15.Nh2
dxe5 16.Nxg4 exf4 17.Qxf4 e6 18.Kg2 h5 19.Nh6+ Kh7 20.Nxf7 Rxf7 21.Qxf7 
Qg5+ 22.Kf1 Rf8 23.Qxe6 Qh4 24.Ne4 Nd4 25.Ng5+ Kh8 26.Nh3 Nxe6 27.Bxe6 g5 
28.Re2 g4 29.Ng1 Bd4 30.Ke1 Rxf2 31.Kd2 Qg5+ 32.Kc2 Qg6+ 33.Kd2 Qxe6 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Mera Cedeno, Angel"]
[Black "Walsh, Chris"]
[Result "0-1"]
[ECO "D68"]
[EventDate "1989.08.??"]
[PlyCount "86"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Bg5 Be7 5.Nc3 O-O 6.e3 Nbd7 7.Rc1 c6 8.Bd3 
dxc4 9.Bxc4 Nd5 10.Bxe7 Qxe7 11.O-O Nxc3 12.Rxc3 e5 13.Qc2 e4 14.Nd2 Nf6 
15.Rc1 Bf5 16.Bb3 Rad8 17.Rc5 g6 18.Nf1 Nh5 19.Qe2 Qh4 20.Bd1 Nf6 21.h3 
Be6 22.Ng3 Bd5 23.b4 a6 24.a4 Nd7 25.Ra5 Qe7 26.Qb2 Nb6 27.Be2 Qe6 28.b5 
axb5 29.axb5 Nc8 30.Qb4 Nd6 31.bxc6 bxc6 32.Ra7 Rb8 33.Qa5 Rb2 34.Bg4 Qf6 
35.Nh1 Nc4 36.Qc7 Qg5 37.Re1 Nd2 38.g3 h5 39.Be2 Qf5 40.Qd7 Nf3+ 41.Bxf3 
Qxf3 42.Qe7 Rfb8 43.Raa1 Kh7 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Parodi, Rafael"]
[Black "Zulu, David"]
[Result "0-1"]
[ECO "E18"]
[EventDate "1989.08.??"]
[PlyCount "104"]

1.d4 Nf6 2.c4 e6 3.Nc3 b6 4.Nf3 Bb7 5.g3 Be7 6.Bg2 O-O 7.O-O h6 8.Ne5 Bxg2
9.Kxg2 d6 10.Nf3 Qc8 11.Qc2 Qb7 12.h3 Nbd7 13.Rd1 Rad8 14.b3 Rfe8 15.e4 
Bf8 16.Bb2 a6 17.Rac1 c5 18.d5 b5 19.Ba1 b4 20.Na4 exd5 21.exd5 g6 22.Re1 
Qb8 23.Qd3 Bg7 24.Rcd1 a5 25.Qc2 Qc7 26.Qd3 Nf8 27.Nd2 N8h7 28.Nf3 Nh5 29.
Bxg7 Nxg7 30.Qc2 f5 31.Nb2 Qf7 32.Qd2 g5 33.Nd3 Nf6 34.h4 Ne4 35.Qc1 Qg6 
36.Qc2 Nh5 37.Kh2 Kf7 38.Rg1 Ke7 39.Rde1 Kd7 40.Qb2 Kc7 41.a3 Ra8 42.axb4 
axb4 43.Ra1 Qf6 44.Qxf6 Nhxf6 45.hxg5 hxg5 46.Kg2 Kb6 47.Rgb1 Nc3 48.Rxa8 
Rxa8 49.Rh1 Nce4 50.Rb1 Ra2 51.Rd1 Ng4 52.Rf1 Ne3+ 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "7"]
[White "Torres Baldeon, Jean Pierre"]
[Black "De Meyer, Geert"]
[Result "1/2-1/2"]
[ECO "A48"]
[EventDate "1989.08.??"]
[PlyCount "43"]

1.d4 Nf6 2.Nf3 c5 3.e3 g6 4.b3 Bg7 5.Bb2 d5 6.Nbd2 O-O 7.Bd3 b6 8.O-O Bb7 
9.Rc1 Nbd7 10.Qe2 e6 11.Ba6 Qc8 12.Bxb7 Qxb7 13.Ne5 Rac8 14.Ndf3 Nxe5 15.
dxe5 Nd7 16.c4 dxc4 17.Qxc4 Rfd8 18.Rfd1 Nb8 19.Qh4 Nc6 20.Ng5 h6 21.Ne4 
Qe7 22.Qg3 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Manor, Ilan"]
[Black "Shirov, Alexei"]
[Result "1/2-1/2"]
[WhiteElo "2445"]
[BlackElo "2495"]
[ECO "A48"]
[EventDate "1989.08.??"]
[PlyCount "34"]

1.d4 Nf6 2.Nf3 g6 3.Bg5 Bg7 4.Nbd2 c5 5.c3 cxd4 6.cxd4 O-O 7.e3 Nc6 8.Bd3 
d6 9.O-O Bg4 10.h3 Bxf3 11.Nxf3 Qb6 12.Qe2 Rfc8 13.Rac1 e5 14.dxe5 dxe5 
15.Bxf6 Bxf6 16.Be4 Ne7 17.Rc3 Rxc3 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Wessman, Richard"]
[Black "Dreev, Alexei"]
[Result "1/2-1/2"]
[WhiteElo "2370"]
[BlackElo "2570"]
[ECO "D13"]
[EventDate "1989.08.??"]
[PlyCount "63"]

1.d4 d5 2.c4 c6 3.cxd5 cxd5 4.Nc3 Nf6 5.Nf3 Nc6 6.Bf4 e6 7.e3 Nh5 8.Bg5 
Qb6 9.Qd2 h6 10.Bh4 g5 11.Bg3 Nxg3 12.hxg3 Bg7 13.Rc1 Qd8 14.Bb5 Bd7 15.
Na4 a6 16.Bxc6 Bxc6 17.Nc5 Qd6 18.Qb4 a5 19.Qb6 Qd8 20.Qxd8+ Rxd8 21.Kd2 
Ke7 22.Nb3 a4 23.Na5 Kd7 24.Ne5+ Bxe5 25.dxe5 Ra8 26.Rc5 Ra6 27.b4 axb3 
28.axb3 Rha8 29.b4 b6 30.Rxc6 bxa5 31.Rxa6 Rxa6 32.bxa5 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Ulybin, Mikhail"]
[Black "Gdanski, Jacek"]
[Result "0-1"]
[WhiteElo "2495"]
[BlackElo "2405"]
[ECO "C01"]
[EventDate "1989.08.??"]
[PlyCount "78"]

1.e4 e6 2.d4 d5 3.exd5 exd5 4.Nf3 Nf6 5.Bg5 Be7 6.Bd3 O-O 7.O-O Bg4 8.Nbd2
Nbd7 9.c3 c6 10.Qc2 h6 11.Bh4 Bxf3 12.Nxf3 Bd6 13.c4 dxc4 14.Bxc4 Nb6 15.
Bb3 Be7 16.Rfe1 Nbd5 17.Ne5 Nd7 18.Bxe7 Nxe7 19.Qe4 Nxe5 20.dxe5 Qc7 21.
Rad1 Kh8 22.Rd6 Rae8 23.Bc2 g6 24.Qh4 Kh7 25.Re3 Qa5 26.a3 Qc5 27.Re2 Nf5 
28.Qf4 Nxd6 29.h4 Qc4 30.Qf3 Qd5 31.Qg3 Nc4 32.f4 Qd4+ 33.Kh2 h5 34.Qg5 
Re6 35.f5 Rxe5 36.fxg6+ Kg7 37.Bf5 f6 38.Qg3 Nd6 39.Rf2 Rxf5 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Polgar, Zsuzsa"]
[Black "Imocha, Laisram"]
[Result "1/2-1/2"]
[WhiteElo "2520"]
[BlackElo "2315"]
[ECO "A47"]
[EventDate "1989.08.??"]
[PlyCount "157"]

1.d4 Nf6 2.Nf3 e6 3.Bf4 b6 4.e3 Bb7 5.Nbd2 Be7 6.h3 O-O 7.Bd3 c5 8.c3 d5 
9.Ne5 Ne4 10.Qc2 f5 11.O-O Nd7 12.Rad1 Ndf6 13.Bh2 Qe8 14.Rfe1 Rc8 15.Nf1 
b5 16.Qe2 c4 17.Bb1 b4 18.f3 Ng5 19.Bf4 Nf7 20.g4 fxg4 21.hxg4 Nxe5 22.
Bxe5 Nd7 23.Bg3 a5 24.Nh2 Bc6 25.Kg2 a4 26.cxb4 Bxb4 27.Rh1 Be7 28.f4 a3 
29.bxa3 Ba4 30.Rdf1 Nf6 31.Nf3 Ne4 32.Nd2 c3 33.Nxe4 dxe4 34.Bxe4 Bc6 35.
Qf3 Bxe4 36.Qxe4 Qc6 37.Qxc6 Rxc6 38.Kf3 Bxa3 39.Be1 Rfc8 40.Ke4 c2 41.Bd2
c1=Q 42.Bxc1 Bxc1 43.Rd1 Ba3 44.Rh5 Ra8 45.Rdh1 h6 46.g5 Bf8 47.gxh6 gxh6 
48.Rb5 Ra7 49.a4 Rca6 50.Ra1 Rxa4 51.Rxa4 Rxa4 52.f5 Kf7 53.Re5 exf5+ 54.
Kxf5 Be7 55.d5 Rh4 56.Re6 Rh5+ 57.Kg4 Rg5+ 58.Kf4 Rxd5 59.Rxh6 Bg5+ 60.Ke4
Rd8 61.Rb6 Re8+ 62.Kf5 Bxe3 63.Rb7+ Kg8 64.Rd7 Bc1 65.Rb7 Ba3 66.Kf6 Bf8 
67.Ra7 Re1 68.Rb7 Rd1 69.Ke6 Rd6+ 70.Ke5 Ra6 71.Rd7 Bg7+ 72.Kd5 Kf8 73.Rc7
Rh6 74.Rc6 Bf6 75.Rc7 Be7 76.Rc6 Rh1 77.Re6 Kf7 78.Re4 Bf6 79.Re2 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Serper, Grigory"]
[Black "Sorensen, Jan"]
[Result "0-1"]
[WhiteElo "2420"]
[BlackElo "2335"]
[ECO "B38"]
[EventDate "1989.08.??"]
[PlyCount "88"]

1.c4 c5 2.Nf3 Nf6 3.Nc3 g6 4.d4 cxd4 5.Nxd4 Bg7 6.e4 d6 7.Be2 O-O 8.O-O 
Nc6 9.Be3 Bd7 10.Re1 Nxd4 11.Bxd4 Bc6 12.f3 a5 13.Qd2 Nd7 14.Be3 Nc5 15.b3
Qb6 16.Nb5 Rfc8 17.Rec1 Qd8 18.Nd4 Bd7 19.Rab1 Qf8 20.Rd1 h5 21.Bd3 Kh7 
22.Ne2 Bh6 23.Nf4 Bc6 24.Nd5 Bxd5 25.exd5 Bxe3+ 26.Qxe3 Re8 27.Bc2 e6 28.
dxe6 Rxe6 29.Qd2 b6 30.Re1 Rae8 31.a3 Rxe1+ 32.Rxe1 Rxe1+ 33.Qxe1 Qg7 34.
h4 Qb2 35.Qd1 Qxa3 36.f4 Ne6 37.Qxh5+ Kg7 38.Qd1 Qc5+ 39.Kf1 Nxf4 40.Qf3 
Qe5 41.g3 Ne6 42.Bd1 Nd4 43.Qd3 Nf5 44.Kf2 Qc5+ 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Djurhuus, Rune"]
[Black "Van Wely, Loek"]
[Result "1-0"]
[WhiteElo "2415"]
[BlackElo "2320"]
[ECO "B07"]
[EventDate "1989.08.??"]
[PlyCount "97"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nge2 Bg7 5.g3 O-O 6.Bg2 Nbd7 7.h3 c5 8.O-O Rb8
9.a4 a6 10.Be3 b6 11.Qd2 Re8 12.g4 h5 13.g5 Nh7 14.f4 cxd4 15.Nxd4 Bb7 16.
e5 dxe5 17.Nc6 Bxc6 18.Bxc6 Nhf8 19.f5 gxf5 20.Rxf5 Qc7 21.Qg2 e6 22.Rf2 
Ng6 23.Qf3 Re7 24.Ne4 Qxc6 25.Nf6+ Nxf6 26.Qxc6 Nd5 27.Qd6 Rc7 28.Rxf7 
Kxf7 29.Rf1+ Ke8 30.c4 Bf8 31.Qxe6+ Nde7 32.Qf7+ Kd7 33.Rd1+ Kc8 34.Qe6+ 
Kb7 35.Qxb6+ Kc8 36.Qxa6+ Rbb7 37.Qa8+ Rb8 38.Qa6+ Rbb7 39.Bb6 Nc6 40.Bxc7
Bc5+ 41.Kf1 Kxc7 42.Rd7+ Kxd7 43.Qxb7+ Kd6 44.a5 Nf4 45.a6 e4 46.b4 Bxb4 
47.g6 Ne7 48.g7 e3 49.Qb8+ 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Spasov, Vasil"]
[Black "Vasquez Schroder, Rodrigo"]
[Result "1-0"]
[WhiteElo "2430"]
[BlackElo "2300"]
[ECO "B80"]
[EventDate "1989.08.??"]
[PlyCount "53"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Qe2 a6 7.f4 Be7 8.Be3 Qc7
9.g4 Nfd7 10.g5 b5 11.a3 Nc6 12.Qd2 Rb8 13.h4 Nb6 14.Nxc6 Qxc6 15.h5 Nc4 
16.Bxc4 Qxc4 17.Bd4 Rg8 18.b3 Qc6 19.h6 e5 20.Be3 exf4 21.Bxf4 gxh6 22.
Rxh6 Qc5 23.O-O-O Be6 24.Bxd6 Bxd6 25.Qxd6 Qxd6 26.Rxd6 a5 27.Rxh7 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Rodriguez Vila, Andres"]
[Black "Koch, Jean-Rene"]
[Result "1/2-1/2"]
[WhiteElo "2295"]
[BlackElo "2420"]
[ECO "B70"]
[EventDate "1989.08.??"]
[PlyCount "94"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.g3 Bg7 7.Bg2 O-O 8.O-O 
Bg4 9.Nde2 Qc8 10.Bg5 Nc6 11.Nd5 Nxd5 12.exd5 Nd4 13.f3 Bxf3 14.Bxf3 Nxf3+
15.Rxf3 Qg4 16.Rb3 Qxg5 17.c3 b6 18.Nf4 Rac8 19.Rb4 Be5 20.Qd3 Bxf4 21.
Rxf4 e5 22.dxe6 Qc5+ 23.Qd4 fxe6 24.Qxc5 bxc5 25.Ra4 Rc7 26.Ra6 Rd7 27.Rd1
Rfd8 28.b3 Kf7 29.Rc6 Ke7 30.Kg2 Rf8 31.Rd2 Rf5 32.c4 Re5 33.Kf3 Re1 34.
Kf2 Ra1 35.Kf3 Kf6 36.h4 h5 37.Ke4 Re1+ 38.Kf3 Ke5 39.Rxc5+ dxc5 40.Rxd7 
a5 41.Ra7 Kd4 42.Rxa5 Re3+ 43.Kf2 Rc3 44.Ra6 Rc2+ 45.Kf3 Rc3+ 46.Kf2 Rc2+ 
47.Kf3 Rc3+ 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Moutousis, Konstantinos"]
[Black "Stangl, Markus"]
[Result "1/2-1/2"]
[WhiteElo "2330"]
[BlackElo "2375"]
[ECO "B86"]
[EventDate "1989.08.??"]
[PlyCount "111"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bc4 e6 7.O-O Be7 8.Bb3 
O-O 9.f4 Nbd7 10.Be3 Nc5 11.Qf3 Qc7 12.f5 e5 13.Nde2 Nxb3 14.cxb3 b5 15.a3
Bb7 16.Rac1 Qd7 17.Ng3 Rac8 18.Bg5 Nxe4 19.Bxe7 Nf6 20.Nce4 Bxe4 21.Nxe4 
Qxe7 22.Nxf6+ gxf6 23.Rcd1 Rc2 24.Qd3 Rc6 25.Rf3 Kh8 26.Qd5 Qa7+ 27.Kh1 
Qc5 28.Rc3 Qxd5 29.Rxd5 Rfc8 30.Rxd6 Rxc3 31.bxc3 Rxc3 32.g4 a5 33.Rxf6 
Rxb3 34.Rxf7 Rxa3 35.g5 Kg8 36.Rb7 b4 37.Kg2 b3 38.f6 Ra2+ 39.Kg3 b2 40.
Rb8+ Kf7 41.h4 a4 42.Rb7+ Ke6 43.Kg4 Ra1 44.Rb6+ Kd7 45.Rxb2 a3 46.Rf2 Ke8
47.Kf5 Kf7 48.h5 Rg1 49.Rc2 Rf1+ 50.Kxe5 Re1+ 51.Kd4 Rg1 52.Rc7+ Kf8 53.
Rc8+ Kf7 54.Rc7+ Kf8 55.Rc8+ Kf7 56.Rc7+ 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Hernandez, Gilberto"]
[Black "Boissonet, Carlos"]
[Result "1-0"]
[WhiteElo "2300"]
[BlackElo "2340"]
[ECO "B70"]
[EventDate "1989.08.??"]
[PlyCount "101"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.g3 Nc6 7.Bg2 Nxd4 8.Qxd4 
Bg7 9.O-O O-O 10.Qb4 Qc7 11.Bg5 Be6 12.a4 h6 13.Bd2 a5 14.Qa3 Rac8 15.Rac1
Ng4 16.Nd5 Bxd5 17.exd5 Qb6 18.c3 h5 19.Rce1 Rfe8 20.Re4 Nf6 21.Re2 Qc5 
22.Qxc5 Rxc5 23.Rfe1 Kf8 24.Bf4 Rc4 25.h4 Rxf4 26.gxf4 Nd7 27.Kh2 Nb6 28.
Kg3 Nxa4 29.Ra1 b5 30.Rc2 Rc8 31.Ra3 Rc5 32.Kh3 Bf6 33.Bf1 Rxd5 34.Bxb5 
Nxc3 35.Bc4 Rc5 36.Raxc3 Bxc3 37.Rxc3 d5 38.Ba2 Rxc3+ 39.bxc3 e6 40.Kg3 
Ke7 41.Kf3 Kd6 42.Bb3 Kc5 43.Ke3 f6 44.f3 Kd6 45.Bc2 Kc5 46.Bxg6 Kc4 47.
Kd2 d4 48.cxd4 Kxd4 49.Bxh5 e5 50.Bf7 e4 51.h5 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Georges, Sascha"]
[Black "Ruxton, Keith"]
[Result "1/2-1/2"]
[WhiteElo "2220"]
[BlackElo "2325"]
[ECO "A21"]
[EventDate "1989.08.??"]
[PlyCount "41"]

1.c4 e5 2.Nc3 Bb4 3.g3 Bxc3 4.bxc3 Qe7 5.Bg2 f5 6.d4 d6 7.Ba3 e4 8.c5 d5 
9.Qb3 c6 10.e3 Nf6 11.Ne2 O-O 12.h4 Na6 13.Nf4 g6 14.Bf1 Nc7 15.Rb1 Kg7 
16.Be2 Rd8 17.Kf1 Qe8 18.Kg2 h6 19.Bb4 Ne6 20.Ba5 Rd7 21.Rbg1 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Rios Parra, Alejandro"]
[Black "Kontic, Vladimir"]
[Result "0-1"]
[BlackElo "2395"]
[ECO "C06"]
[EventDate "1989.08.??"]
[PlyCount "54"]

1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 c5 6.c3 Nc6 7.Ne2 cxd4 8.cxd4 f6
9.exf6 Nxf6 10.O-O Bd6 11.Nf3 Qc7 12.Bg5 O-O 13.Rc1 Ng4 14.h3 Rxf3 15.hxg4
Rf8 16.Rc3 e5 17.dxe5 Bxe5 18.Bxh7+ Kxh7 19.Rh3+ Kg8 20.Qxd5+ Qf7 21.Qe4 
g6 22.Rh6 Bg7 23.Rxg6 Re8 24.Qb1 Ne5 25.Rd6 Bxg4 26.Nd4 Nc4 27.Rg6 Bh5 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Hsu Li Yang"]
[Black "Hokkanen, Petri"]
[Result "1-0"]
[WhiteElo "2315"]
[ECO "D36"]
[EventDate "1989.08.??"]
[PlyCount "85"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Qc2 O-O 6.Bg5 c6 7.e3 Nbd7 8.cxd5 
exd5 9.Bd3 Re8 10.O-O-O g6 11.h4 h5 12.Rhe1 Kg7 13.Kb1 Qa5 14.e4 Nxe4 15.
Nxe4 dxe4 16.Rxe4 Qd8 17.Rde1 f6 18.Bc1 Nb6 19.Qd2 Bf5 20.Re6 Bxd3+ 21.
Qxd3 Nd7 22.Qe3 Kf7 23.Qb3 Kg7 24.Ng5 Nf8 25.R6e4 fxg5 26.Bxg5 Bxg5 27.
Rxe8 Qxe8 28.Rxe8 Rxe8 29.hxg5 Re7 30.d5 cxd5 31.Qxd5 a6 32.f4 Rf7 33.g3 
Kg8 34.b4 Kg7 35.Kb2 Kg8 36.Qe5 Kh7 37.Qe8 Kg8 38.Kc3 Kg7 39.Kd4 Kg8 40.
Kc5 Kg7 41.Kb6 Rd7 42.a4 Rf7 43.a5 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "De Meyer, Geert"]
[Black "Brandner, Stefan"]
[Result "0-1"]
[BlackElo "2305"]
[ECO "E69"]
[EventDate "1989.08.??"]
[PlyCount "82"]

1.d4 g6 2.c4 Bg7 3.g3 d6 4.Bg2 Nd7 5.Nc3 e5 6.Nf3 Ngf6 7.O-O O-O 8.e4 exd4
9.Nxd4 Re8 10.Re1 c6 11.h3 a5 12.b3 Nc5 13.Bb2 Qb6 14.Rb1 Nfd7 15.Nde2 Ne5
16.Nc1 Be6 17.Kh2 f5 18.f4 Nf7 19.Nd3 Nxe4 20.Nxe4 fxe4 21.Bxe4 Nh6 22.
Bxg7 Kxg7 23.Qd2 Qd4 24.Rbd1 Bxh3 25.Kxh3 Rxe4 26.Rxe4 Qxe4 27.Nf2 Qf5+ 
28.Kg2 Nf7 29.g4 Qd7 30.Qd4+ Kf8 31.Kg3 h5 32.Rh1 Qe6 33.gxh5 gxh5 34.Rxh5
Qg6+ 35.Kh4 Re8 36.Qd3 Qg1 37.Qg3 Qe1 38.Rh7 Qe7+ 39.Kh5 Qf6 40.Qg6 Qxf4 
41.Ng4 Re1 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Walsh, Chris"]
[Black "Martin, Benjamin"]
[Result "1/2-1/2"]
[BlackElo "2280"]
[ECO "A08"]
[EventDate "1989.08.??"]
[PlyCount "56"]

1.e4 e6 2.d3 d5 3.Nd2 c5 4.Ngf3 Nc6 5.g3 Bd6 6.Bg2 Nge7 7.O-O O-O 8.Re1 
Bc7 9.Nf1 d4 10.Nh4 Ng6 11.Nxg6 fxg6 12.Nd2 e5 13.Rf1 Be6 14.a4 Qd7 15.Nc4
Rf7 16.Bd2 Raf8 17.f3 h6 18.h4 Qd8 19.b3 a6 20.Qe1 Bxc4 21.bxc4 Ba5 22.
Bxa5 Qxa5 23.Qxa5 Nxa5 24.Rab1 g5 25.hxg5 hxg5 26.Bh3 Rf6 27.Kg2 R8f7 28.
Bg4 Nc6 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Rodrigues, Adriano von Pfuhl"]
[Black "Rodriguez, Daniel"]
[Result "0-1"]
[BlackElo "2235"]
[ECO "A46"]
[EventDate "1989.08.??"]
[PlyCount "42"]

1.d4 Nf6 2.Nf3 e6 3.g3 d5 4.Bg2 Bd6 5.O-O Nbd7 6.c4 c6 7.Qc2 O-O 8.Nbd2 
Re8 9.Rd1 e5 10.dxe5 Nxe5 11.Nxe5 Bxe5 12.Nf3 Bg4 13.cxd5 Nxd5 14.e4 Nb4 
15.Rxd8 Nxc2 16.Rxa8 Rxa8 17.Nxe5 Be6 18.b3 Nxa1 19.Bb2 Rd8 20.Bf3 Nc2 21.
Kf1 Nb4 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Huda, Rehan"]
[Black "Torres Baldeon, Jean Pierre"]
[Result "1-0"]
[WhiteElo "2230"]
[ECO "D34"]
[EventDate "1989.08.??"]
[PlyCount "68"]

1.Nf3 Nf6 2.c4 e6 3.g3 c5 4.Nc3 Nc6 5.d4 d5 6.cxd5 exd5 7.Bg2 Be7 8.O-O 
O-O 9.dxc5 Bxc5 10.Bg5 d4 11.Ne4 Be7 12.Bxf6 Bxf6 13.Ne1 Re8 14.Rc1 Be6 
15.Nc5 Bc8 16.Ned3 Qd6 17.Re1 g6 18.Qa4 Kg7 19.Nxb7 Bxb7 20.Bxc6 Re7 21.
Bxb7 Rxb7 22.Rc6 Qe7 23.Rec1 Rab8 24.R1c2 h5 25.h4 Rd8 26.Qa6 Rdb8 27.Qc4 
Qe4 28.Rc7 Rxc7 29.Qxc7 Rb5 30.Qc6 Qf5 31.Qe8 Bxh4 32.Rc8 Kh6 33.Qh8+ Kg5 
34.gxh4+ Kxh4 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Castillo Melendez, Otto Rene"]
[Black "Mamombe, Kudzanai"]
[Result "1-0"]
[ECO "B20"]
[EventDate "1989.08.??"]
[PlyCount "51"]

1.e4 c5 2.b3 d6 3.Bb2 e6 4.Nf3 Nf6 5.Nc3 Nc6 6.d4 Qa5 7.Qd2 cxd4 8.Nxd4 
Bd7 9.Be2 a6 10.O-O Be7 11.Rad1 Rc8 12.Kh1 O-O 13.f4 e5 14.Nxc6 Bxc6 15.
Nd5 Qd8 16.Nxf6+ Bxf6 17.Bg4 Rc7 18.Qb4 exf4 19.Rxd6 Qe7 20.Bxf6 gxf6 21.
Rxf4 Bd7 22.Qd4 Qe5 23.g3 Bc6 24.Bf5 h6 25.Qxe5 fxe5 26.Rg4+ 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Dao Thien Hai"]
[Black "Cadena, Juan"]
[Result "1-0"]
[ECO "D36"]
[EventDate "1989.08.??"]
[PlyCount "92"]

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6 5.cxd5 exd5 6.Bg5 Be7 7.Qc2 O-O 8.e3 
Bg4 9.Bd3 h6 10.Bh4 Nbd7 11.h3 Be6 12.O-O Nh5 13.Bxe7 Qxe7 14.Ne5 Nxe5 15.
dxe5 f5 16.Be2 Qg5 17.Qd1 Bf7 18.f4 Qh4 19.Bxh5 Bxh5 20.Qd4 Rfe8 21.Kh2 
Re6 22.g3 Qe7 23.b4 b6 24.b5 Rd8 25.bxc6 Rxc6 26.Rf2 Qe6 27.Nb5 Rc4 28.Qd3
Re4 29.Rc1 Bf7 30.Rfc2 Ra4 31.Nd4 Qe8 32.a3 Bg6 33.Rc6 Kh7 34.e6 Qf8 35.
R1c3 Rd6 36.Rc8 Qf6 37.R8c7 h5 38.Rb7 h4 39.Rcc7 hxg3+ 40.Kxg3 Kh6 41.Rxg7
Rd8 42.Nc6 Qa1 43.Rxg6+ Kxg6 44.Ne5+ Kf6 45.Rf7+ Kxe6 46.Qxf5+ Kd6 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Martinez Echezarreta, Arturo"]
[Black "Apaza, Henry"]
[Result "1-0"]
[ECO "B86"]
[EventDate "1989.08.??"]
[PlyCount "61"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 Be7 7.Be3 a6 8.Bb3 
Nc6 9.Qe2 Bd7 10.O-O-O b5 11.Nxc6 Bxc6 12.e5 Nd7 13.exd6 Bf6 14.Nd5 Bxd5 
15.Bxd5 Rc8 16.Bb3 O-O 17.f4 Nc5 18.g4 Nxb3+ 19.axb3 Qd7 20.g5 Bd8 21.c4 
bxc4 22.bxc4 Rc6 23.Qd3 Bb6 24.Bxb6 Rxb6 25.Rd2 Rc8 26.Rhd1 Rb4 27.Rc2 a5 
28.h4 Rc5 29.h5 a4 30.h6 f6 31.gxf6 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Miguel Lago, Victor Placido"]
[Black "Santos, Carlos Pereira"]
[Result "1/2-1/2"]
[ECO "E04"]
[EventDate "1989.08.??"]
[PlyCount "48"]

1.Nf3 d5 2.g3 c5 3.Bg2 Nc6 4.d4 e6 5.O-O Nf6 6.c4 dxc4 7.dxc5 Qxd1 8.Rxd1 
Bxc5 9.Nbd2 c3 10.bxc3 O-O 11.Nb3 Bb6 12.Nfd4 Ne5 13.a4 a6 14.Ba3 Re8 15.
Nc5 Nd5 16.Ne4 Nc4 17.Rd3 Bd7 18.Nd6 Nxd6 19.Bxd5 exd5 20.Bxd6 Rac8 21.e3 
Ba5 22.Bb4 Bb6 23.a5 Bxd4 24.Rxd4 Bc6 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Parodi, Rafael"]
[Black "Melgosa, Marcio"]
[Result "0-1"]
[ECO "A67"]
[EventDate "1989.08.??"]
[PlyCount "44"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Bb5+ Nbd7
9.a4 O-O 10.Nf3 a6 11.Bd3 Re8 12.O-O c4 13.Bxc4 Nxe4 14.Nxe4 Rxe4 15.Bd3 
Re8 16.f5 Nf6 17.Ng5 Qa5 18.Nxh7 Nxh7 19.fxg6 fxg6 20.Rf6 Re1+ 21.Kf2 Rxd1
22.Bxg6 Kh8 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Segovia, Javier"]
[Black "Haughton, Richard"]
[Result "1-0"]
[ECO "B10"]
[EventDate "1989.08.??"]
[PlyCount "53"]

1.e4 c6 2.c4 d5 3.exd5 cxd5 4.cxd5 Nf6 5.Nc3 Nxd5 6.Bc4 Nb6 7.Bb3 Nc6 8.
Nf3 e6 9.d4 Be7 10.O-O O-O 11.Qd3 Bf6 12.Be3 Qe7 13.Ne4 Nb4 14.Qe2 h6 15.
Ne5 N4d5 16.Bc2 Nxe3 17.fxe3 Bg5 18.Rf3 Bd7 19.Raf1 Be8 20.Ng6 fxg6 21.
Rxf8+ Kh7 22.h4 Bb5 23.Qxb5 Bxe3+ 24.R8f2 Nd5 25.Qd3 Qxh4 26.Nc3 Qg4 27.
Nxd5 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Warner, Delisle"]
[Black "Chung, Ronnie"]
[Result "1/2-1/2"]
[ECO "E17"]
[EventDate "1989.08.??"]
[PlyCount "30"]

1.Nf3 Nf6 2.c4 e6 3.g3 b6 4.Bg2 Bb7 5.Nc3 Be7 6.d4 Ne4 7.Qc2 Nxc3 8.bxc3 
f5 9.d5 O-O 10.Nd4 e5 11.Nxf5 d6 12.Be4 Bf6 13.Nh4 Bxh4 14.Bxh7+ Kh8 15.
Qg6 Nd7 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "8"]
[White "Zulu, David"]
[Black "Mera Cedeno, Angel"]
[Result "0-1"]
[ECO "B76"]
[EventDate "1989.08.??"]
[PlyCount "74"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 
Nc6 9.g4 Bd7 10.O-O-O Rc8 11.Kb1 Re8 12.Rg1 a6 13.h4 b5 14.Nce2 Ne5 15.Ng3
Qc7 16.c3 Rb8 17.Be2 Rbc8 18.Bh6 Bh8 19.Ngf5 Be6 20.Nxe6 fxe6 21.Nd4 Qd7 
22.h5 a5 23.f4 b4 24.cxb4 Nc4 25.Bxc4 Rxc4 26.Qe2 Rxb4 27.Rd2 Qb7 28.b3 
Qxe4+ 29.Qd3 Rxd4 30.Qxe4 Nxe4 31.Rxd4 Bxd4 32.Re1 d5 33.Bg5 a4 34.Kc2 
axb3+ 35.axb3 Kf7 36.Rh1 Rc8+ 37.Kb1 Nd2+ 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Shirov, Alexei"]
[Black "Ulybin, Mikhail"]
[Result "1/2-1/2"]
[WhiteElo "2495"]
[BlackElo "2495"]
[ECO "D73"]
[EventDate "1989.08.??"]
[PlyCount "33"]

1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.c4 c6 5.Nc3 d5 6.cxd5 cxd5 7.d4 O-O 8.Ne5 e6
9.Bg5 Qb6 10.Qd2 Nfd7 11.Be3 Nc6 12.Nxc6 bxc6 13.Rc1 a5 14.O-O Ba6 15.Rfd1
Rfc8 16.Rc2 Qb4 17.Bh6 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Dreev, Alexei"]
[Black "Djurhuus, Rune"]
[Result "1/2-1/2"]
[WhiteElo "2570"]
[BlackElo "2415"]
[ECO "E94"]
[EventDate "1989.08.??"]
[PlyCount "60"]

1.d4 Nf6 2.c4 d6 3.Nf3 g6 4.Nc3 Bg7 5.e4 O-O 6.Be2 e5 7.O-O Nbd7 8.Be3 a5 
9.Qc2 Ng4 10.Bg5 f6 11.Bd2 exd4 12.Nxd4 Nc5 13.h3 f5 14.Nb3 Ne5 15.Nxc5 
dxc5 16.Rad1 Nc6 17.Nb5 Qe7 18.Bc3 fxe4 19.Bxg7 Kxg7 20.Qc3+ Kg8 21.Qg3 
Rf7 22.f4 Bf5 23.Qe3 b6 24.Rd2 Rd8 25.Rxd8+ Qxd8 26.Rd1 Rd7 27.Rxd7 Qxd7 
28.g4 Be6 29.Qxe4 Nd4 30.Nxd4 Qxd4+ 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Gdanski, Jacek"]
[Black "Polgar, Zsuzsa"]
[Result "1/2-1/2"]
[WhiteElo "2405"]
[BlackElo "2520"]
[ECO "B30"]
[EventDate "1989.08.??"]
[PlyCount "93"]

1.e4 c5 2.Nf3 Nc6 3.Nc3 Nf6 4.Bb5 a6 5.Bxc6 dxc6 6.O-O Bg4 7.h3 Bxf3 8.
Qxf3 Nd7 9.d3 g6 10.a4 a5 11.Qe2 Bg7 12.f4 O-O 13.Kh1 f5 14.Be3 b6 15.Rad1
e5 16.fxe5 Nxe5 17.exf5 gxf5 18.d4 cxd4 19.Bxd4 Qc7 20.Rfe1 Rae8 21.Qf2 c5
22.Nd5 Qb7 23.Bxe5 Rxe5 24.Qf3 Kh8 25.Rxe5 Bxe5 26.Re1 Qg7 27.c3 Bg3 28.
Re3 Bb8 29.Nf4 Rg8 30.g3 c4 31.Kh2 Qd7 32.Qd5 Qxd5 33.Nxd5 Rd8 34.Nf4 Rd2+
35.Ng2 Bd6 36.Re8+ Kg7 37.Rc8 Bc5 38.Rc7+ Kg6 39.h4 Rxb2 40.Kh3 Ra2 41.
Nf4+ Kf6 42.Rxh7 Rxa4 43.Rh6+ Kf7 44.Nd5 Ra1 45.Nxb6 Bxb6 46.Rxb6 a4 47.
Ra6 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Wessman, Richard"]
[Black "Manor, Ilan"]
[Result "0-1"]
[WhiteElo "2370"]
[BlackElo "2445"]
[ECO "A70"]
[EventDate "1989.08.??"]
[PlyCount "74"]

1.d4 Nf6 2.c4 c5 3.d5 a6 4.Nf3 d6 5.a4 e6 6.Nc3 exd5 7.cxd5 g6 8.h3 Bg7 9.
e4 O-O 10.Bd3 Re8 11.O-O Nbd7 12.Bg5 h6 13.Be3 g5 14.Qd2 Nf8 15.Rae1 N6d7 
16.g3 Ng6 17.Kg2 Rb8 18.Ng1 Nde5 19.f4 gxf4 20.gxf4 Nxd3 21.Qxd3 f5 22.
Nge2 fxe4 23.Nxe4 Qh4 24.Bf2 Qxh3+ 25.Qxh3 Bxh3+ 26.Kxh3 Rxe4 27.Rg1 Kh7 
28.f5 Ne5 29.Ng3 Rxa4 30.Nh5 Bh8 31.f6 Rc4 32.Bg3 Kg6 33.Ref1 Kxh5 34.f7 
Rf8 35.Bxe5 dxe5 36.Rg8 Bg7 37.Rh1 Kg6 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Koch, Jean-Rene"]
[Black "Moutousis, Konstantinos"]
[Result "1-0"]
[WhiteElo "2420"]
[BlackElo "2330"]
[ECO "C93"]
[EventDate "1989.08.??"]
[PlyCount "99"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 
9.h3 Bb7 10.d4 Re8 11.Ng5 Rf8 12.Nf3 h6 13.Nbd2 Re8 14.Nf1 Bf8 15.Ng3 g6 
16.Nh4 d5 17.exd5 Nxd5 18.Nf3 Bg7 19.dxe5 Nxe5 20.Nxe5 Rxe5 21.Rxe5 Bxe5 
22.Bxh6 Kh7 23.Qd2 c5 24.Be3 c4 25.Bc2 Nxe3 26.Qxe3 Bg7 27.Rd1 Qc7 28.h4 
Rd8 29.Rxd8 Qxd8 30.h5 Bh6 31.hxg6+ fxg6 32.Qe6 Qg5 33.Qf7+ Bg7 34.Bxg6+ 
Qxg6 35.Qxb7 Qb1+ 36.Kh2 Qxb2 37.Qe4+ Kh8 38.Qe8+ Kh7 39.Qh5+ Kg8 40.Qe8+ 
Kh7 41.Ne4 Qc1 42.Kg3 b4 43.Qh5+ Kg8 44.Qd5+ Kh8 45.Qd8+ Kh7 46.Kg4 Bh6 
47.Qe7+ Kh8 48.Kf5 Bg7 49.Qe8+ Kh7 50.Ng5+ 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Imocha, Laisram"]
[Black "Serper, Grigory"]
[Result "0-1"]
[WhiteElo "2315"]
[BlackElo "2420"]
[ECO "D11"]
[EventDate "1989.08.??"]
[PlyCount "90"]

1.d4 Nf6 2.Nf3 c6 3.g3 d5 4.Bg2 Bf5 5.O-O e6 6.c4 Nbd7 7.Nc3 Be7 8.Qb3 Qb6
9.Qxb6 axb6 10.cxd5 exd5 11.Nh4 Be6 12.f4 Nb8 13.f5 Bc8 14.b3 O-O 15.Na4 
Nbd7 16.Nf3 Re8 17.e3 Bb4 18.a3 Bd6 19.Nc3 b5 20.Nd1 h5 21.Nh4 Ne4 22.Nf2 
Nxf2 23.Rxf2 Nf6 24.Bf3 Bd7 25.Kg2 Ra5 26.Rfa2 Rea8 27.h3 Ne4 28.Bxe4 dxe4
29.g4 hxg4 30.hxg4 b4 31.a4 b5 32.Kf2 c5 33.dxc5 Bxc5 34.Ng2 bxa4 35.Nf4 
a3 36.Bd2 Be7 37.Rd1 Bc6 38.Kg3 Rb5 39.Be1 Rd8 40.Rxd8+ Bxd8 41.Rc2 Rb7 
42.Ne2 Bf6 43.Nd4 Bxd4 44.exd4 Bd5 45.Kf4 Bxb3 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Rodriguez Vila, Andres"]
[Black "Spasov, Vasil"]
[Result "0-1"]
[WhiteElo "2295"]
[BlackElo "2430"]
[ECO "B33"]
[EventDate "1989.08.??"]
[PlyCount "56"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Nde2 Bc5 7.Be3 Bxe3 8.
fxe3 O-O 9.Ng3 d6 10.Qd2 Qb6 11.O-O-O Be6 12.Nd5 Bxd5 13.exd5 Nb4 14.Bc4 
Rfc8 15.Qe2 Nxc2 16.Nf5 Rc7 17.Kxc2 Qb4 18.Kb1 Rxc4 19.Nxd6 Rg4 20.h3 Rg5 
21.Nc4 b5 22.Na3 Qe4+ 23.Qd3 Rxg2 24.d6 a6 25.Qxe4 Nxe4 26.d7 Rd8 27.Nc2 
Nd2+ 28.Kc1 Rxd7 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Kontic, Vladimir"]
[Black "Hsu Li Yang"]
[Result "1-0"]
[WhiteElo "2395"]
[BlackElo "2315"]
[ECO "B01"]
[EventDate "1989.08.??"]
[PlyCount "91"]

1.e4 d5 2.exd5 Nf6 3.d4 Nxd5 4.Nf3 g6 5.Be2 Bg7 6.O-O O-O 7.c4 Nb6 8.Nc3 
Bg4 9.c5 Nd5 10.Qb3 Nxc3 11.bxc3 b6 12.Ba3 bxc5 13.Bxc5 Nd7 14.Ba3 Rb8 15.
Qd5 Nf6 16.Qa5 Nd5 17.h3 Bf5 18.Bc4 c6 19.Qxd8 Rfxd8 20.Bxd5 cxd5 21.Bxe7 
Re8 22.Bc5 Rb2 23.Rfe1 Rxe1+ 24.Rxe1 Rb1 25.Bxa7 Rxe1+ 26.Nxe1 Kf8 27.Kf1 
Ke7 28.Ke2 Bh6 29.Nd3 Bd7 30.Bb8 Bb5 31.f4 Kd7 32.Kd2 f6 33.a4 Bc4 34.g3 
Kc6 35.Ba7 g5 36.fxg5 Bxg5+ 37.Kc2 h5 38.Bc5 Kc7 39.a5 f5 40.Nb4 h4 41.
gxh4 Bxh4 42.a6 f4 43.Bd6+ Kxd6 44.a7 f3 45.a8=Q f2 46.Qf8+ 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Boissonet, Carlos"]
[Black "Brandner, Stefan"]
[Result "1-0"]
[WhiteElo "2340"]
[BlackElo "2305"]
[ECO "D32"]
[EventDate "1989.08.??"]
[PlyCount "71"]

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 cxd4 5.Qa4+ Bd7 6.Qxd4 exd5 7.Qxd5 Nc6 8.
Nf3 Nf6 9.Qd1 Bc5 10.e3 Qe7 11.Bd2 O-O-O 12.a3 g5 13.h3 Rhg8 14.Qc2 Kb8 
15.Rc1 g4 16.hxg4 Bxg4 17.Be2 h5 18.b4 Bb6 19.b5 Bxf3 20.gxf3 Ne5 21.Na4 
Nd5 22.Qe4 Qd6 23.Nxb6 axb6 24.Rd1 Qc7 25.Rc1 Qd6 26.Rd1 Qc7 27.f4 Ng6 28.
Qc4 Qe7 29.Bc1 Nf6 30.Rxd8+ Rxd8 31.Bb2 Ne4 32.Rxh5 Nd2 33.Qb4 Qc7 34.Qc3 
Qd7 35.f5 Qd5 36.Qd4 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Sorensen, Jan"]
[Black "Hernandez, Gilberto"]
[Result "1-0"]
[WhiteElo "2335"]
[BlackElo "2300"]
[ECO "B47"]
[EventDate "1989.08.??"]
[PlyCount "177"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be2 a6 7.O-O Nf6 8.Kh1 
Nxd4 9.Qxd4 Bc5 10.Qd3 h5 11.f4 Ng4 12.e5 d6 13.exd6 Bxd6 14.Ne4 Be7 15.h3
Nh6 16.b3 Bd7 17.Bb2 Nf5 18.Be5 Qb6 19.Ng3 Nxg3+ 20.Qxg3 Bf6 21.Rad1 h4 
22.Qd3 Bc6 23.Bxf6 gxf6 24.Bf3 Bxf3 25.Rxf3 Rd8 26.Qe2 Rxd1+ 27.Qxd1 Kf8 
28.Rd3 Rh6 29.Qe2 Qc6 30.c4 Rg6 31.Qf3 Qxf3 32.Rxf3 e5 33.Re3 exf4 34.Rf3 
Rg3 35.Rxf4 Rc3 36.Rxh4 Rc2 37.Rh8+ Kg7 38.Rb8 b5 39.cxb5 axb5 40.Rxb5 
Rxa2 41.Kh2 Rb2 42.Kg3 Kg6 43.Kf3 f5 44.Rb6+ Kg5 45.Rb8 f6 46.Rb5 Kg6 47.
h4 Rb1 48.Kg3 Rb2 49.Kh3 Rb1 50.Kg3 Rb2 51.Kf3 Rb1 52.g3 Rb2 53.h5+ Kh6 
54.g4 fxg4+ 55.Kxg4 Rg2+ 56.Kf4 Rh2 57.Kg3 Rb2 58.Kf4 Rh2 59.Kg3 Rb2 60.b4
Rb1 61.Kf4 Rh1 62.Kg4 Rg1+ 63.Kf3 Rb1 64.Ke4 Re1+ 65.Kf5 Rf1+ 66.Ke6 Rf4 
67.Kf7 Kh7 68.Rb6 f5 69.Kf6 Rf1 70.Kg5 f4 71.Kg4 f3 72.Kg3 Kg7 73.h6+ Kh7 
74.b5 Kg8 75.Rb8+ Kh7 76.Rb6 Kg8 77.Rb7 f2 78.Rb6 Kh7 79.Kg2 Rb1 80.Kxf2 
Rb4 81.Ke3 Rb1 82.Kd4 Rd1+ 83.Kc5 Rc1+ 84.Kd5 Rd1+ 85.Kc6 Rc1+ 86.Kd7 Rb1 
87.Rb8 Kxh6 88.Kc6 Kg7 89.Re8 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Stangl, Markus"]
[Black "Huda, Rehan"]
[Result "1-0"]
[WhiteElo "2375"]
[BlackElo "2230"]
[ECO "A33"]
[EventDate "1989.08.??"]
[PlyCount "93"]

1.Nf3 Nf6 2.c4 c5 3.Nc3 Nc6 4.d4 cxd4 5.Nxd4 e6 6.a3 d5 7.cxd5 Nxd5 8.Nxc6
bxc6 9.Bd2 Be7 10.Qa4 Bd7 11.e4 Nb6 12.Qa5 O-O 13.Bf4 c5 14.Ba6 Bc8 15.Rd1
Nd5 16.Qxd8 Rxd8 17.Nxd5 exd5 18.Bxc8 Raxc8 19.Rxd5 Rxd5 20.exd5 Rd8 21.
Kd2 Rxd5+ 22.Kc2 g5 23.Bb8 Rd7 24.Re1 Rb7 25.Be5 f6 26.Bc3 Kf7 27.Kd3 h5 
28.Kc4 Rd7 29.Kb5 Rb7+ 30.Ka6 Rd7 31.Re2 Bd6 32.h3 f5 33.Kb5 Rc7 34.Ba5 
Rc8 35.Ka6 g4 36.hxg4 fxg4 37.g3 Rb8 38.Kxa7 Rb5 39.Bc3 c4 40.a4 Bc5+ 41.
Ka8 Rb3 42.Bh8 Bd6 43.a5 Rb8+ 44.Ka7 Rb5 45.a6 Rf5 46.Kb7 Bc5 47.Re5 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Rodriguez, Daniel"]
[Black "Van Wely, Loek"]
[Result "1/2-1/2"]
[WhiteElo "2235"]
[BlackElo "2320"]
[ECO "B22"]
[EventDate "1989.08.??"]
[PlyCount "81"]

1.e4 c5 2.Nf3 e6 3.c3 Nf6 4.e5 Nd5 5.d4 cxd4 6.cxd4 b6 7.Nc3 Nxc3 8.bxc3 
Qc7 9.Bd2 d6 10.Bd3 Nd7 11.O-O dxe5 12.Nxe5 Nxe5 13.Bf4 Bd6 14.dxe5 Be7 
15.Qg4 Kf8 16.Rfd1 h5 17.Qf3 Bb7 18.Be4 Rb8 19.Bxb7 Rxb7 20.Qe3 h4 21.Bg5 
Rh5 22.Bxe7+ Kxe7 23.f4 h3 24.g3 Qc6 25.Rd2 f6 26.exf6+ gxf6 27.Rad1 Qc5 
28.Rd4 Rd5 29.Re1 Rd6 30.Qe4 Rbd7 31.Qh7+ Kd8 32.Qh8+ Kc7 33.Qa8 Qxc3 34.
Qxa7+ Kd8 35.Qa8+ Ke7 36.Rde4 Qc5+ 37.Kf1 f5 38.R4e2 Qc4 39.Qg8 Kf6 40.
Qf8+ Kg6 41.Qg8+ 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Ruxton, Keith"]
[Black "Walsh, Chris"]
[Result "0-1"]
[WhiteElo "2325"]
[ECO "A07"]
[EventDate "1989.08.??"]
[PlyCount "120"]

1.Nf3 Nf6 2.g3 d5 3.Bg2 c6 4.O-O Bf5 5.d3 Nbd7 6.b3 e5 7.Bb2 Qc7 8.c4 d4 
9.Nbd2 Bc5 10.Ng5 O-O 11.Nge4 Nxe4 12.dxe4 Be6 13.Kh1 Nf6 14.h3 a5 15.a3 
Rab8 16.Qc2 Rfe8 17.Qd3 b5 18.f4 exf4 19.gxf4 bxc4 20.Nxc4 Nh5 21.Bc1 a4 
22.Qf3 g6 23.Nd2 Bxb3 24.e5 Bd5 25.Qg4 d3 26.Bxd5 dxe2 27.Bxf7+ Qxf7 28.
Re1 Bf2 29.Rxe2 Ng3+ 30.Kg2 Nxe2 31.Qxe2 Bd4 32.Rb1 Qd5+ 33.Kh2 Rxb1 34.
Nxb1 Rb8 35.Nd2 Qc5 36.Qg4 Qd5 37.Qe2 Bb2 38.Ne4 Kh8 39.Bd2 Qb5 40.Qf2 
Bxa3 41.e6 Bb2 42.Nd6 Qd5 43.Nf7+ Kg7 44.Ng5 Bd4 45.Qe2 Bf6 46.Qe3 Re8 47.
Bc3 c5 48.e7 Bxc3 49.Qxc3+ Kg8 50.Qf6 Qd2+ 51.Kg3 Qe1+ 52.Kh2 Qf2+ 53.Kh1 
Qf1+ 54.Kh2 Qf2+ 55.Kh1 Qf1+ 56.Kh2 Qe2+ 57.Kg3 Qe3+ 58.Kh2 Qe2+ 59.Kh1 
Qe1+ 60.Kh2 Qxe7 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Vasquez Schroder, Rodrigo"]
[Black "Dao Thien Hai"]
[Result "1-0"]
[WhiteElo "2300"]
[ECO "B85"]
[EventDate "1989.08.??"]
[PlyCount "103"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.f4 Qc7 8.O-O Be7
9.a4 Nc6 10.Be3 O-O 11.Nb3 b6 12.Bf3 Bb7 13.g4 Rac8 14.g5 Nd7 15.Bg2 Rfe8 
16.Rf3 Bf8 17.Rh3 g6 18.Qg4 Bg7 19.Qh4 Nf8 20.f5 Nb4 21.f6 Bh8 22.Qf2 Nd7 
23.Rf1 Nc6 24.Rxh7 Kxh7 25.Qh4+ Kg8 26.Rf3 Qd8 27.Rh3 Bxf6 28.gxf6 Qxf6 
29.Qh7+ Kf8 30.Rf3 Nce5 31.Rxf6 Nxf6 32.Qh4 Ng8 33.Nd4 Nc4 34.Bg5 Kg7 35.
e5 dxe5 36.Bxb7 Rc7 37.Nde2 Rxb7 38.Qxc4 b5 39.axb5 axb5 40.Qh4 f6 41.Be3 
Rc8 42.Ne4 Rxc2 43.Bh6+ Nxh6 44.Qxf6+ Kg8 45.Qxe6+ Nf7 46.Nd6 Rbc7 47.
Qxg6+ Kf8 48.Nf5 Rxe2 49.Qg7+ Ke8 50.Qg8+ Kd7 51.Qxf7+ Kc6 52.Nd4+ 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Martin, Benjamin"]
[Black "De Meyer, Geert"]
[Result "1/2-1/2"]
[WhiteElo "2280"]
[ECO "A57"]
[EventDate "1989.08.??"]
[PlyCount "50"]

1.d4 Nf6 2.c4 c5 3.d5 b5 4.Bg5 Ne4 5.Nf3 Nxg5 6.Nxg5 e6 7.Ne4 Bb7 8.e3 Qh4
9.Ned2 bxc4 10.Bxc4 Bxd5 11.Bxd5 exd5 12.Qb3 Nc6 13.Qxd5 Be7 14.O-O Qf6 
15.Nc3 O-O 16.Nde4 Qe6 17.Rfd1 Rfd8 18.a3 Rab8 19.Rab1 c4 20.Nd2 Ne5 21.f4
Ng4 22.Nxc4 Rdc8 23.h3 Rxc4 24.Qxe6 dxe6 25.hxg4 Bc5 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Apaza, Henry"]
[Black "Georges, Sascha"]
[Result "0-1"]
[BlackElo "2220"]
[ECO "D87"]
[EventDate "1989.08.??"]
[PlyCount "70"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 c5 8.Ne2 
Nc6 9.Be3 O-O 10.Rc1 cxd4 11.cxd4 Qa5+ 12.Kf1 Rd8 13.h4 h5 14.Qb3 e6 15.d5
Ne5 16.dxe6 Nxc4 17.exf7+ Kxf7 18.Qxc4+ Be6 19.Qc7+ Qxc7 20.Rxc7+ Kg8 21.
Ke1 Bxa2 22.Rxb7 a5 23.Rh3 a4 24.Nc1 Be6 25.Rg3 Bg4 26.f3 Be5 27.f4 Rd1+ 
28.Kf2 Bc3 29.Rxg4 hxg4 30.Ke2 Re1+ 31.Kd3 Rd8+ 32.Kxc3 Rxe3+ 33.Kc2 Rg3 
34.Kb2 Rxg2+ 35.Ka3 Rc2 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Cadena, Juan"]
[Black "Warner, Delisle"]
[Result "1/2-1/2"]
[ECO "C01"]
[EventDate "1989.08.??"]
[PlyCount "82"]

1.e4 e6 2.d4 d5 3.exd5 exd5 4.Nf3 Bd6 5.Bd3 Nc6 6.c3 Nge7 7.O-O Bg4 8.Bg5 
f6 9.Bh4 Qd7 10.Nbd2 O-O-O 11.a4 g5 12.Bg3 Bxg3 13.fxg3 h5 14.b4 h4 15.
gxh4 gxh4 16.Qb1 Rdg8 17.a5 Nf5 18.b5 Nce7 19.Kf2 Nd6 20.b6 a6 21.bxc7 Bf5
22.Re1 Ng6 23.Bxf5 Nxf5 24.Nb3 Nf4 25.Nc5 Rxg2+ 26.Kf1 Qb5+ 27.Qxb5 axb5 
28.a6 bxa6 29.Rxa6 Rhg8 30.Ra8+ Kxc7 31.Rxg8 Rxg8 32.Ne6+ Nxe6 33.Rxe6 Rf8
34.Kf2 Nd6 35.Nxh4 Ne4+ 36.Kf3 Nxc3 37.Nf5 Ne4 38.h4 Rh8 39.Re7+ Kb6 40.
Re6+ Ka5 41.Ne7 Rh5 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Chung, Ronnie"]
[Black "Mamombe, Kudzanai"]
[Result "1-0"]
[ECO "C52"]
[EventDate "1989.08.??"]
[PlyCount "61"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Ba5 6.d4 exd4 7.O-O d6 8.Qb3 
Qe7 9.cxd4 Bb6 10.Ba3 Nxd4 11.Nxd4 Bxd4 12.Nc3 Bxc3 13.Qxc3 Qe5 14.Qb3 Nh6
15.Bb2 Qg5 16.f4 Qc5+ 17.Kh1 Rg8 18.e5 Bd7 19.exd6 O-O-O 20.dxc7 Rde8 21.
Rad1 Re3 22.Qc2 Qxc7 23.Bd4 Re6 24.Be5 Qc5 25.Rxd7 Rc6 26.Rd4 b5 27.Qb3 
Nf5 28.Bxb5 Nxd4 29.Bxd4 Qc2 30.Bxc6 Qxc6 31.Be5 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Haughton, Richard"]
[Black "Parodi, Rafael"]
[Result "1/2-1/2"]
[ECO "E12"]
[EventDate "1989.08.??"]
[PlyCount "90"]

1.d4 Nf6 2.Nf3 e6 3.c4 b6 4.a3 Bb7 5.Nc3 c5 6.d5 d6 7.e4 e5 8.Bd3 Be7 9.h3
Nbd7 10.Be3 Nf8 11.Bc2 Bc8 12.Ba4+ Bd7 13.Bxd7+ N6xd7 14.g3 Ng6 15.Qd3 a6 
16.h4 h6 17.b4 Rb8 18.b5 a5 19.Kd2 Nf6 20.Nh2 Qd7 21.Qe2 Kd8 22.Kc2 Ne8 
23.Qh5 Nf6 24.Qf5 Nf8 25.Qxd7+ N6xd7 26.Rag1 Kc7 27.f4 Nh7 28.Nf3 Rbf8 29.
fxe5 Nxe5 30.Nxe5 dxe5 31.g4 g5 32.hxg5 Bxg5 33.Bxg5 Nxg5 34.Kd3 Rd8 35.
Ke3 Rd6 36.Ne2 Rg6 37.Ng3 Kd7 38.Nf5 Ke8 39.Rh4 f6 40.d6 Kd7 41.Rd1 Nf7 
42.Ne7 Rg7 43.Nd5 Nxd6 44.Nxb6+ Ke6 45.Kd3 Rhg8 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Hokkanen, Petri"]
[Black "Castillo Melendez, Otto Rene"]
[Result "0-1"]
[ECO "D36"]
[EventDate "1989.08.??"]
[PlyCount "82"]

1.d4 d5 2.c4 e6 3.cxd5 exd5 4.Nf3 Nf6 5.Nc3 Be7 6.Bg5 Nbd7 7.e3 c6 8.Qc2 
Nf8 9.Bd3 Ne6 10.Bh4 g6 11.O-O O-O 12.Rab1 Nh5 13.Bxe7 Qxe7 14.b4 Rd8 15.
Rfc1 Nf6 16.Na4 Bd7 17.Nc5 Be8 18.Ne5 Rac8 19.Qa4 a6 20.Rb2 h5 21.Qb3 Rc7 
22.a4 Rdc8 23.Rbc2 Kg7 24.Rc3 Qd6 25.Qc2 Qe7 26.h3 Ng5 27.f3 Nd7 28.Ncxd7 
Bxd7 29.b5 axb5 30.axb5 Re8 31.Qe2 c5 32.Rxc5 Rxc5 33.Rxc5 b6 34.Rxd5 Be6 
35.Nc6 Qf6 36.Re5 Ra8 37.f4 Ra1+ 38.Kh2 Nxh3 39.f5 Nf4 40.Qf2 Nxd3 41.Qg3 
Nxe5 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Melgosa, Marcio"]
[Black "Zulu, David"]
[Result "1-0"]
[ECO "B86"]
[EventDate "1989.08.??"]
[PlyCount "49"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 a6 7.Be3 Qc7 8.Bb3 
Be7 9.Qe2 O-O 10.g4 Nc6 11.O-O-O b5 12.g5 Nd7 13.Nd5 exd5 14.Nxc6 Ne5 15.
Nxe5 dxe5 16.exd5 Bf5 17.h4 Rfc8 18.h5 Bd6 19.g6 fxg6 20.hxg6 Bxg6 21.Rhg1
a5 22.a4 Rab8 23.axb5 a4 24.Bxa4 Qa5 25.Rxg6 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Mera Cedeno, Angel"]
[Black "Segovia, Javier"]
[Result "0-1"]
[ECO "A62"]
[EventDate "1989.08.??"]
[PlyCount "120"]

1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 exd5 5.cxd5 d6 6.Nc3 g6 7.g3 Bg7 8.Bg2 O-O 
9.O-O Re8 10.Bg5 h6 11.Bf4 a6 12.a4 Qc7 13.Re1 Nh5 14.Bd2 Nd7 15.e4 Rb8 
16.Nh4 Ne5 17.Qe2 c4 18.Rf1 b5 19.axb5 axb5 20.Be3 Bd7 21.Ra7 Rb7 22.Rfa1 
Reb8 23.Nf5 Bxf5 24.exf5 Qc8 25.fxg6 fxg6 26.Ne4 Qf8 27.Rxb7 Rxb7 28.Ra6 
Rd7 29.Bh3 Rd8 30.Be6+ Kh8 31.f4 Nd3 32.Ra7 Ra8 33.Rf7 Qd8 34.Qg4 Qa5 35.
Bd2 Qa1+ 36.Kg2 Qxb2 37.Qxg6 c3 38.Rxg7 Nhxf4+ 39.gxf4 Nxf4+ 40.Kg3 Nxg6 
41.Bxc3 Qxc3+ 42.Nxc3 Kxg7 43.Nxb5 Ra6 44.Kg4 Rb6 45.Nc7 Rb4+ 46.Kf3 Kf6 
47.Ne8+ Ke5 48.Bd7 Nf4 49.Kg4 Nxd5+ 50.Kh5 Nf6+ 51.Nxf6 Kxf6 52.h3 d5 53.
Bc6 Kg7 54.h4 Re4 55.Bb7 Rf4 56.Bc6 d4 57.Be4 Kf6 58.Bd3 Rf3 59.Be2 Rf2 
60.Bd1 Kg7 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Rios Parra, Alejandro"]
[Black "Miguel Lago, Victor Placido"]
[Result "1-0"]
[ECO "B17"]
[EventDate "1989.08.??"]
[PlyCount "175"]

1.e4 c6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Nd7 5.Bd3 Ndf6 6.Ng5 Bg4 7.N1f3 Bh5 8.
O-O Qc7 9.Nh3 e6 10.Nf4 Bxf3 11.Qxf3 Bd6 12.g3 O-O-O 13.Ne2 h6 14.Rb1 g5 
15.b4 g4 16.Qg2 Nd5 17.Bd2 f5 18.c4 f4 19.cxd5 f3 20.Qh1 fxe2 21.Bxe2 exd5
22.Bxg4+ Kb8 23.b5 Nf6 24.Bf5 Ka8 25.Bb4 h5 26.h4 c5 27.Bxc5 Bxc5 28.Rfc1 
b6 29.dxc5 bxc5 30.Kg2 Rhg8 31.Qf1 Kb8 32.a4 c4 33.b6 axb6 34.Rxb6+ Qxb6 
35.Rb1 Rd6 36.Rxb6+ Rxb6 37.Qa1 Rd8 38.a5 Ra6 39.Qb2+ Kc7 40.Qb5 Rdd6 41.
Qc5+ Rac6 42.Qa7+ Kd8 43.Qb8+ Ke7 44.Bc2 c3 45.a6 Rxa6 46.Qc7+ Ke6 47.Qxc3
d4 48.Qc7 d3 49.Bb3+ Kf5 50.Qg7 Ke5 51.Qg5+ Kd4 52.Qd2 Rab6 53.Qb2+ Ke4 
54.f3+ Kf5 55.Qa3 Nd5 56.Qc5 Rbc6 57.Qd4 Nf6 58.Qf4+ Kg6 59.g4 hxg4 60.
fxg4 d2 61.h5+ Kg7 62.h6+ Kg6 63.Qf5+ Kxh6 64.g5+ Kg7 65.gxf6+ Rxf6 66.
Qd7+ Kf8 67.Qd8+ Kg7 68.Qxd2 Rcd6 69.Qc3 Kf8 70.Qc8+ Ke7 71.Qc7+ Ke8 72.
Bc4 Kf8 73.Kg3 Rg6+ 74.Kf4 Rgf6+ 75.Ke5 Ke8 76.Bb5+ Kf8 77.Qc8+ Kg7 78.Bc4
Kg6 79.Qg4+ Kh6 80.Bf7 Rb6 81.Qg8 Rg6 82.Bxg6 Rxg6 83.Qd8 Kg7 84.Kf5 Kh7 
85.Qe8 Rg7 86.Kf6 Rg1 87.Qd7+ Kh8 88.Qc8+ 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Santos, Carlos Pereira"]
[Black "Martinez Echezarreta, Arturo"]
[Result "0-1"]
[ECO "A69"]
[EventDate "1989.08.??"]
[PlyCount "51"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Nf3 O-O 
9.Be2 Re8 10.e5 dxe5 11.fxe5 Ng4 12.Bg5 Qb6 13.O-O Nxe5 14.Nxe5 Rxe5 15.
Bf4 Qxb2 16.Bxe5 Bxe5 17.Qa4 Bd7 18.Bb5 Qxc3 19.Bxd7 Qd4+ 20.Kh1 Qxa4 21.
Bxa4 Bxa1 22.Rxa1 Na6 23.d6 Rd8 24.Rd1 Nb4 25.h3 Kf8 26.Kg1 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "9"]
[White "Torres Baldeon, Jean Pierre"]
[Black "Rodrigues, Adriano von Pfuhl"]
[Result "1/2-1/2"]
[ECO "C16"]
[EventDate "1989.08.??"]
[PlyCount "49"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 Qd7 5.a3 Bxc3+ 6.bxc3 b6 7.a4 Nc6 8.Bd3 Bb7
9.Qe2 Nge7 10.f4 Na5 11.Nf3 h6 12.Bd2 O-O-O 13.O-O Kb8 14.Rfb1 Nec6 15.Re1
Rdg8 16.Be3 Qc8 17.Nd2 Ka8 18.Rf1 Rf8 19.f5 Qd7 20.Rf2 Nb8 21.Nb3 Nc4 22.
a5 Nb2 23.fxe6 fxe6 24.Bg6 Qc6 25.Qe1 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Spasov, Vasil"]
[Black "Dreev, Alexei"]
[Result "1/2-1/2"]
[WhiteElo "2430"]
[BlackElo "2570"]
[ECO "C08"]
[EventDate "1989.08.??"]
[PlyCount "188"]

1.e4 e6 2.d4 d5 3.Nd2 a6 4.Ngf3 c5 5.exd5 exd5 6.Be2 c4 7.O-O Bd6 8.b3 b5 
9.Re1 Ne7 10.a4 Bb7 11.Ne5 O-O 12.bxc4 dxc4 13.Bf3 Nd5 14.Ne4 Re8 15.Nxd6 
Qxd6 16.Ba3 Qd8 17.Be4 Re6 18.Qh5 g6 19.Nxf7 Qe8 20.Qh4 Kxf7 21.Qxh7+ Kf6 
22.Qxb7 Nc6 23.axb5 axb5 24.Qxb5 Ncb4 25.Qxe8 Raxe8 26.Bxb4 Nxb4 27.c3 Nc2
28.f3 Nxe1 29.Rxe1 Rb8 30.h4 Rb2 31.Re3 Rd2 32.Kh2 Rb6 33.Re1 Rb3 34.Ra1 
Rxc3 35.Ra6+ Ke7 36.Rxg6 Rxd4 37.h5 Rd6 38.Rg5 Rc1 39.Rc5 c3 40.Kg3 Kf7 
41.Rc7+ Kf8 42.Kf4 c2 43.g4 Rd2 44.h6 Rh1 45.h7 Re2 46.Bxc2 Re7 47.Rc8+ 
Re8 48.Rc6 Kg7 49.Be4 Re1 50.Rc5 Rf8+ 51.Rf5 Rxf5+ 52.Bxf5 Rf1 53.Be4 Rg1 
54.Ke3 Rg2 55.Kd3 Rg1 56.Kd4 Rg2 57.Ke5 Rg1 58.Kf4 Rg2 59.Bb1 Rg1 60.Bd3 
Rg2 61.Be4 Rg1 62.g5 Ra1 63.Ke3 Ra3+ 64.Bd3 Rb3 65.f4 Rb6 66.f5 Kxh7 67.
f6+ Kg8 68.Kf4 Kf8 69.Ke5 Rb3 70.Be4 Rg3 71.g6 Rg5+ 72.Kf4 Rg1 73.Kf5 Rg3 
74.Bd5 Rg1 75.Bf3 Rg3 76.Bg4 Rg1 77.Kg5 Kg8 78.Kh4 Rh1+ 79.Kg3 Rg1+ 80.Kh3
Kf8 81.Bf5 Rg5 82.Be4 Kg8 83.Kh4 Rg1 84.Kh5 Rg3 85.Bd5+ Kh8 86.Bc6 Kg8 87.
Bb5 Rg1 88.Bc4+ Kh8 89.Be2 Rg2 90.Bd1 Rg1 91.Bf3 Rg3 92.Bg4 Kg8 93.Kg5 Rg1
94.Kf4 Kf8 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Ulybin, Mikhail"]
[Black "Manor, Ilan"]
[Result "1-0"]
[WhiteElo "2495"]
[BlackElo "2445"]
[ECO "B33"]
[EventDate "1989.08.??"]
[PlyCount "101"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 
Be6 9.Nc4 Rc8 10.Nd5 Bxd5 11.Bxf6 gxf6 12.Qxd5 Nb4 13.Qd2 d5 14.exd5 Nxc2+
15.Qxc2 Bb4+ 16.Kd1 Qxd5+ 17.Kc1 O-O 18.Kb1 Rfd8 19.Ne3 Rxc2 20.Nxd5 Rxf2 
21.Bc4 Bc5 22.a4 Kg7 23.b4 Bxb4 24.Nxb4 Rf4 25.Rc1 Rc8 26.Bb3 Rxc1+ 27.
Kxc1 Rxb4 28.Bd5 f5 29.Kc2 Kg6 30.Kc3 a5 31.Bc4 f4 32.Bb5 e4 33.Rd1 f5 34.
Rd7 f3 35.gxf3 exf3 36.Kd2 Re4 37.Rd3 Re2+ 38.Kc3 Rxh2 39.Rxf3 Kg5 40.Kd4 
Rd2+ 41.Ke5 h5 42.Rg3+ Kh4 43.Rg7 Kh3 44.Kxf5 h4 45.Kf4 b6 46.Rg6 Kh2 47.
Ke3 Ra2 48.Rxb6 h3 49.Rg6 Rg2 50.Bd3 Kg1 51.Be4 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Djurhuus, Rune"]
[Black "Polgar, Zsuzsa"]
[Result "0-1"]
[WhiteElo "2415"]
[BlackElo "2520"]
[ECO "C54"]
[EventDate "1989.08.??"]
[PlyCount "119"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d3 d6 6.b4 Bb6 7.O-O Ne7 8.Re1 Ng6 
9.d4 O-O 10.dxe5 Nxe5 11.Nxe5 dxe5 12.Qxd8 Rxd8 13.Bg5 a5 14.b5 Rd6 15.Na3
h6 16.Bxf6 Rxf6 17.Re2 Bc5 18.Nc2 Rd6 19.Kf1 Bg4 20.f3 Be6 21.Bxe6 fxe6 
22.Ne1 Rad8 23.Rc2 a4 24.Ke2 Bg1 25.Nd3 Bxh2 26.Nb2 Rb6 27.c4 Rbd6 28.Rd1 
Rxd1 29.Nxd1 Bg1 30.Nb2 Ra8 31.Nd3 Bd4 32.Rc1 Kf8 33.Rb1 Ke7 34.Kd1 Kf6 
35.Ke2 h5 36.Rh1 Rh8 37.Rb1 g5 38.Rh1 Kg6 39.Kd2 h4 40.Ke2 Kh5 41.Rd1 g4 
42.fxg4+ Kxg4 43.Rh1 c6 44.Rh3 Rf8 45.Ke1 cxb5 46.cxb5 Ra8 47.Rf3 Ra5 48.
Kd2 Rxb5 49.Kc2 Rb6 50.Rf7 Rc6+ 51.Kd2 Rc3 52.Rg7+ Kh5 53.Nf2 Ra3 54.Ng4 
Rxa2+ 55.Kd1 Ra1+ 56.Ke2 Ra3 57.Nf6+ Kh6 58.Rg4 Ra2+ 59.Ke1 Rf2 60.Ng8+ 
0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Gdanski, Jacek"]
[Black "Shirov, Alexei"]
[Result "1-0"]
[WhiteElo "2405"]
[BlackElo "2495"]
[ECO "B56"]
[EventDate "1989.08.??"]
[PlyCount "100"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Be3 e5 7.Nf3 h6 8.h3 Be6
9.Be2 Be7 10.O-O O-O 11.Re1 Rc8 12.Bf1 Qd7 13.Qe2 Bd8 14.Red1 Ba5 15.Bc5 
Bxc3 16.Rxd6 Qc7 17.bxc3 Rfe8 18.Rdd1 Qa5 19.Bd6 Qxc3 20.Rab1 b6 21.a3 
Rcd8 22.Rd3 Qa5 23.Qe1 Bc4 24.Bb4 Qa6 25.Rxd8 Nxd8 26.Qe3 Bxf1 27.Rxf1 Qc4
28.Qd3 Qxe4 29.Qxe4 Nxe4 30.Re1 f5 31.Nh4 g6 32.Nxg6 a5 33.Ne7+ Rxe7 34.
Bxe7 Nc6 35.Bh4 Kf7 36.f3 Nd6 37.Bf2 Nc4 38.a4 Ke6 39.Rb1 Nb4 40.c3 Nd5 
41.Rc1 Nf4 42.Rb1 Kd5 43.Kh2 Kc6 44.g4 e4 45.fxe4 fxe4 46.Bd4 e3 47.Re1 
Nd3 48.Rxe3 Nxe3 49.Bxe3 Nb2 50.h4 b5 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Serper, Grigory"]
[Black "Stangl, Markus"]
[Result "1/2-1/2"]
[WhiteElo "2420"]
[BlackElo "2375"]
[ECO "A30"]
[EventDate "1989.08.??"]
[PlyCount "88"]

1.c4 Nf6 2.Nc3 c5 3.Nf3 b6 4.g3 Bb7 5.Bg2 e6 6.O-O a6 7.b3 d6 8.Bb2 Be7 9.
e3 Nbd7 10.Qe2 O-O 11.Rfd1 Qc7 12.d4 cxd4 13.Rxd4 Rfd8 14.Rad1 Nc5 15.R4d2
Rac8 16.Nd4 Qb8 17.e4 Re8 18.Qe1 Bf8 19.Re2 Ba8 20.h3 g6 21.f4 e5 22.fxe5 
dxe5 23.Nf3 Bg7 24.Nd5 b5 25.cxb5 axb5 26.Kh2 Bxd5 27.exd5 e4 28.Ne5 Rxe5 
29.Bxe5 Qxe5 30.Rc2 Qb8 31.Rdc1 Bf8 32.b4 Nd3 33.Rxc8 Qxc8 34.Rxc8 Nxe1 
35.d6 Kg7 36.d7 Nxd7 37.Bxe4 Bxb4 38.Bc6 Ne5 39.Bxb5 N1f3+ 40.Kg2 Nd4 41.
a4 h5 42.Bc4 Kf6 43.Ba2 Ndc6 44.Rc7 Ba5 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Boissonet, Carlos"]
[Black "Koch, Jean-Rene"]
[Result "0-1"]
[WhiteElo "2340"]
[BlackElo "2420"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Sorensen, Jan"]
[Black "Wessman, Richard"]
[Result "0-1"]
[WhiteElo "2335"]
[BlackElo "2370"]
[ECO "C28"]
[EventDate "1989.08.??"]
[PlyCount "86"]

1.e4 e5 2.Nc3 Nf6 3.Bc4 Nc6 4.d3 Na5 5.Nge2 Nxc4 6.dxc4 d6 7.Bg5 h6 8.Bxf6
Qxf6 9.Nd5 Qd8 10.Nec3 a6 11.Qf3 c6 12.Ne3 b5 13.O-O Be6 14.Rfd1 Qb6 15.
cxb5 axb5 16.a4 b4 17.Nb1 g6 18.Qf6 Rg8 19.Nd2 Rd8 20.c4 bxc3 21.bxc3 Be7 
22.Qf3 Kf8 23.Rdb1 Qc5 24.c4 Kg7 25.Rb7 Qd4 26.Ra2 Rd7 27.Rxd7 Bxd7 28.Nb3
Qa7 29.a5 Rb8 30.Qd1 Be6 31.Qc2 Bg5 32.Nf1 Rb4 33.Nbd2 Qa6 34.Qc3 c5 35.
Qd3 Bd7 36.Nf3 Bd8 37.Nxe5 Be6 38.Rc2 Bf6 39.Nf3 Bxc4 40.Qd1 Bb3 41.Qe2 
Bc4 42.Qd1 Bd3 43.Rc1 Bxe4 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Hernandez, Gilberto"]
[Black "Kontic, Vladimir"]
[Result "0-1"]
[WhiteElo "2300"]
[BlackElo "2395"]
[ECO "C08"]
[EventDate "1989.08.??"]
[PlyCount "80"]

1.e4 e6 2.d4 d5 3.Nd2 a6 4.Ngf3 c5 5.exd5 exd5 6.c3 Nc6 7.dxc5 Bxc5 8.Nb3 
Bb6 9.Bg5 Nf6 10.Be2 Bxf2+ 11.Kxf2 Ne4+ 12.Kf1 Nxg5 13.Qe1 O-O 14.Rd1 Re8 
15.Nxg5 Qxg5 16.h4 Qf6+ 17.Qf2 Bf5 18.Nd4 Nxd4 19.Rxd4 Qe6 20.Bf3 Be4 21.
Rh3 Qe5 22.Kg1 Re7 23.Rg3 f5 24.Rg5 h6 25.Bxe4 hxg5 26.Bxd5+ Kh7 27.hxg5 
Kg6 28.Bf3 Rh8 29.Qd2 Qe1+ 30.Qxe1 Rxe1+ 31.Kf2 Re7 32.Rb4 b5 33.a4 Re5 
34.Bb7 bxa4 35.Bxa6 Ra5 36.Bd3 Kxg5 37.c4 a3 38.bxa3 Rxa3 39.Bb1 Rh1 40.
Rb5 g6 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Van Wely, Loek"]
[Black "Rodriguez Vila, Andres"]
[Result "1-0"]
[WhiteElo "2320"]
[BlackElo "2295"]
[ECO "E20"]
[EventDate "1989.08.??"]
[PlyCount "121"]

1.d4 e6 2.c4 Nf6 3.Nc3 Bb4 4.g3 O-O 5.Bg2 c5 6.Nf3 Ne4 7.Qd3 Qa5 8.Qxe4 
Bxc3+ 9.Bd2 Bxd2+ 10.Nxd2 cxd4 11.Qxd4 Nc6 12.Qd6 Qb4 13.Qxb4 Nxb4 14.O-O 
d5 15.a3 Nc2 16.Rad1 Bd7 17.cxd5 Bb5 18.Be4 Nd4 19.Nf3 Nxe2+ 20.Kg2 e5 21.
d6 Nd4 22.Rfe1 Nc6 23.Bd5 Rfe8 24.b3 Rad8 25.a4 Ba6 26.Bxc6 bxc6 27.Rxe5 
Rxe5 28.Nxe5 f6 29.Nc4 Kf7 30.Na5 Rd7 31.f3 c5 32.Rd5 Ke6 33.Rxc5 Rxd6 34.
g4 Rd2+ 35.Kg3 Bf1 36.h4 g6 37.Kf4 Rd3 38.Rc6+ Kf7 39.g5 f5 40.Rc2 a6 41.
Rf2 Rd1 42.Ke5 Bd3 43.Nc6 Rb1 44.Kd4 Bf1 45.Kc5 Ke6 46.Nd4+ Ke5 47.b4 Kf4 
48.Rc2 Kg3 49.b5 axb5 50.axb5 Kxh4 51.b6 Kxg5 52.Rc3 h5 53.Kc6 h4 54.Rb3 
Rxb3 55.Nxb3 Ba6 56.Nc5 Be2 57.Ne4+ fxe4 58.b7 Bxf3 59.b8=Q Kg4 60.Kc5 g5 
61.Qe5 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Vasquez Schroder, Rodrigo"]
[Black "Imocha, Laisram"]
[Result "0-1"]
[WhiteElo "2300"]
[BlackElo "2315"]
[ECO "C11"]
[EventDate "1989.08.??"]
[PlyCount "116"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.f4 c5 6.Nf3 Nc6 7.Be3 a6 8.Qd2 b5 9.
dxc5 Bxc5 10.Bxc5 Nxc5 11.Bd3 Qb6 12.Qf2 b4 13.Ne2 a5 14.O-O Ba6 15.Rfd1 
g6 16.h3 O-O 17.Kh2 f6 18.exf6 Rxf6 19.Qh4 Kg7 20.Qg3 Ne4 21.Qe1 Qe3 22.
Ng3 Qxe1 23.Rxe1 Bxd3 24.cxd3 Nf2 25.Rac1 Ra6 26.Ne5 Nxe5 27.fxe5 Rf7 28.
Re3 d4 29.Re2 Nxd3 30.Rc4 Rd7 31.Re4 Nxb2 32.Rcxd4 Raa7 33.Rd6 Na4 34.Rc4 
Rxd6 35.exd6 Kf6 36.a3 Nb6 37.Rc5 Nd5 38.axb4 axb4 39.Rc8 Ke5 40.Rd8 Rb7 
41.d7 Nf6 42.Ne2 Rxd7 43.Rb8 Nd5 44.Nc1 Kd4 45.Nb3+ Kc4 46.Nd2+ Kc3 47.
Ne4+ Kc2 48.Nc5 Rd6 49.Rc8 Nc3 50.Rb8 Rc6 51.Nxe6 Rxe6 52.Rxb4 Nd5 53.Rd4 
Ne3 54.Rd7 h5 55.Kg3 Rf6 56.Rd8 Kc3 57.Rd7 g5 58.h4 Nf5+ 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Cadena, Juan"]
[Black "Ruxton, Keith"]
[Result "0-1"]
[BlackElo "2325"]
[ECO "B18"]
[EventDate "1989.08.??"]
[PlyCount "42"]

1.e4 c6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.Nf3 Nd7 7.Bd3 e6 8.O-O 
Qc7 9.Re1 O-O-O 10.a4 Bd6 11.Be3 Kb8 12.c3 Ngf6 13.b4 Nd5 14.Bxg6 hxg6 15.
Qb3 N7f6 16.Ne5 Nxe3 17.Rxe3 Bxe5 18.Rxe5 Ng4 19.Rc5 Qf4 20.Qb2 Rxh2 21.b5
Rdh8 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Hsu Li Yang"]
[Black "Rios Parra, Alejandro"]
[Result "1-0"]
[WhiteElo "2315"]
[ECO "A21"]
[EventDate "1989.08.??"]
[PlyCount "45"]

1.c4 g6 2.Nc3 Bg7 3.g3 e5 4.Bg2 Ne7 5.e3 O-O 6.Nge2 f5 7.d3 c6 8.O-O d6 9.
b4 Nd7 10.Rb1 Nf6 11.f4 Be6 12.b5 Qc7 13.bxc6 bxc6 14.Qa4 Rab8 15.Bd2 Nd7 
16.Qa3 e4 17.Nd4 Bxd4 18.exd4 Nb6 19.c5 dxc5 20.dxc5 Nbd5 21.dxe4 Nxc3 22.
Bxc3 fxe4 23.Be5 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Moutousis, Konstantinos"]
[Black "Walsh, Chris"]
[Result "1-0"]
[WhiteElo "2315"]
[ECO "C12"]
[EventDate "1989.08.??"]
[PlyCount "115"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Bd2 Bxc3 7.bxc3 Ne4 8.Qg4 g6
9.Bd3 Nxd2 10.Kxd2 c5 11.Nf3 Nc6 12.h4 cxd4 13.cxd4 Bd7 14.c3 Qe7 15.Qf4 
O-O-O 16.Qf6 Qa3 17.Rhb1 Na5 18.Ne1 Ba4 19.Bb5 Bxb5 20.Rxb5 Nc4+ 21.Kd3 
Nb2+ 22.Kc2 Nc4 23.Qxf7 Qa6 24.a4 Rhf8 25.Rc5+ Kb8 26.Qc7+ Ka8 27.Nd3 b6 
28.Qc6+ Qb7 29.Qxb7+ Kxb7 30.Rb5 Kc7 31.Rbb1 g5 32.hxg5 hxg5 33.Kd1 Rh8 
34.Ke2 Rh2 35.Rh1 Rdh8 36.Rxh2 Rxh2 37.g3 Kd7 38.Ra2 Ke7 39.Nb2 Nxb2 40.
Rxb2 Rh1 41.a5 bxa5 42.Rb7+ Kf8 43.Kf3 Rc1 44.Kg4 Rxc3 45.Kxg5 Rf3 46.Rb2 
a4 47.Kg4 Rb3 48.Rc2 a3 49.Rc8+ Kf7 50.Rc7+ Kg6 51.Rxa7 Rd3 52.Ra6 Rxd4+ 
53.f4 Rd3 54.Rxe6+ Kf7 55.Ra6 Re3 56.Kf5 Rxg3 57.Ra7+ Ke8 58.Ke6 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Brandner, Stefan"]
[Black "Miguel Lago, Victor Placido"]
[Result "1-0"]
[WhiteElo "2305"]
[ECO "B12"]
[EventDate "1989.08.??"]
[PlyCount "49"]

1.e4 c6 2.d4 d5 3.e5 Bf5 4.c4 e6 5.Nc3 dxc4 6.Bxc4 Nd7 7.Nge2 Nb6 8.Bb3 h6
9.O-O Ne7 10.Ng3 Qd7 11.f4 Bh7 12.Be3 Nbd5 13.Qf3 Nf5 14.Nxf5 Bxf5 15.Bf2 
h5 16.Nxd5 cxd5 17.Bh4 Bb4 18.Qg3 O-O 19.Qg5 Bg6 20.Bd1 Bd2 21.Bxh5 Bxh5 
22.Qxh5 Be3+ 23.Kh1 Bxd4 24.Bf6 gxf6 25.Qg4+ 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Rodrigues, Adriano von Pfuhl"]
[Black "Martin, Benjamin"]
[Result "0-1"]
[BlackElo "2280"]
[ECO "A26"]
[EventDate "1989.08.??"]
[PlyCount "72"]

1.c4 Nf6 2.Nc3 e5 3.Nf3 Nc6 4.g3 g6 5.Bg2 Bg7 6.O-O O-O 7.d3 d6 8.Rb1 h6 
9.b4 Be6 10.b5 Ne7 11.Qc2 Nd7 12.Nd2 c6 13.Ba3 Qc7 14.Qa4 Nb6 15.Qa5 c5 
16.Bb2 f5 17.Qa3 f4 18.Nce4 Nf5 19.Qb3 Nd4 20.Bxd4 exd4 21.a4 Nd7 22.Ra1 
Ne5 23.Rfb1 fxg3 24.hxg3 Qe7 25.Qc2 h5 26.Nf3 Ng4 27.b6 a6 28.a5 Bh6 29.
Rf1 Rf7 30.Nh2 Raf8 31.Nxg4 Bxg4 32.Rae1 h4 33.Bh1 hxg3 34.Nxg3 Rxf2 35.
Rxf2 Qe3 36.Ne4 Rxf2 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Huda, Rehan"]
[Black "Castillo Melendez, Otto Rene"]
[Result "1-0"]
[WhiteElo "2230"]
[ECO "E18"]
[EventDate "1989.08.??"]
[PlyCount "87"]

1.Nf3 d5 2.d4 e6 3.c4 Nf6 4.g3 Be7 5.Bg2 O-O 6.O-O b6 7.Nc3 Bb7 8.Ne5 c6 
9.e4 Na6 10.Re1 Rc8 11.Bf4 c5 12.exd5 cxd4 13.Qxd4 Nb4 14.Qd1 exd5 15.a3 
Nc6 16.Nxc6 Rxc6 17.cxd5 Rxc3 18.bxc3 Bd6 19.Bxd6 Qxd6 20.Qd4 Rd8 21.Qb4 
Qb8 22.c4 h6 23.a4 Rd6 24.a5 Qc7 25.axb6 Rxb6 26.Qc3 Qc5 27.Ra5 Qc8 28.Qd4
Rb4 29.Rc5 Qd8 30.d6 Bxg2 31.Kxg2 Rb6 32.d7 Qxd7 33.Qxd7 Nxd7 34.Rc8+ Kh7 
35.Re7 Rd6 36.Rc7 Nf6 37.Rxf7 Ne8 38.Rxa7 Rc6 39.Rfe7 Rc8 40.c5 Kg6 41.
Rad7 Kf6 42.g4 g5 43.Rf7+ Kg6 44.Rf8 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Segovia, Javier"]
[Black "Georges, Sascha"]
[Result "1-0"]
[BlackElo "2220"]
[ECO "B22"]
[EventDate "1989.08.??"]
[PlyCount "39"]

1.e4 c5 2.c3 d5 3.exd5 Qxd5 4.d4 Nc6 5.Nf3 Bg4 6.Be2 cxd4 7.cxd4 e6 8.O-O 
Nf6 9.Nc3 Qa5 10.h3 Bh5 11.Qb3 Qb4 12.Rd1 Qxb3 13.axb3 Nd5 14.Nxd5 exd5 
15.g4 Bg6 16.Ne5 Bc2 17.Rd2 Bxb3 18.Bb5 Ke7 19.Re2 Nxd4 20.Nc6+ 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Dao Thien Hai"]
[Black "Torres Baldeon, Jean Pierre"]
[Result "0-1"]
[ECO "E92"]
[EventDate "1989.08.??"]
[PlyCount "106"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 O-O 5.Nf3 d6 6.Be2 e5 7.d5 a5 8.Bg5 h6 9.
Bh4 Na6 10.Nd2 Qe8 11.O-O Nh7 12.f3 h5 13.a3 Bd7 14.b3 Bh6 15.Rb1 Be3+ 16.
Kh1 Bc5 17.Qc1 f5 18.Na2 g5 19.Be1 Qe7 20.b4 axb4 21.axb4 Be3 22.Qc2 f4 
23.Nc3 g4 24.Nd1 g3 25.hxg3 fxg3 26.Bxg3 Bf4 27.Bxf4 Rxf4 28.Kg1 Qh4 29.
Nf2 Ng5 30.Rfc1 Kh8 31.Nf1 Rg8 32.Qd1 Bg4 33.Rc3 Bh3 34.Ne3 Qg3 35.Nh1 Qh4
36.Nf2 Rf7 37.Kf1 Bd7 38.Bd3 Qf4 39.Bc2 h4 40.Nf5 Bxf5 41.exf5 h3 42.g4 
Rh7 43.Ke2 h2 44.Qh1 Qd4 45.Ra3 Qxc4+ 46.Bd3 Qxd5 47.Ne4 Nxe4 48.Bxe4 Qc4+
49.Bd3 Qd4 50.f6 Rh6 51.f7 Rf8 52.g5 Rh4 53.g6 Kg7 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "De Meyer, Geert"]
[Black "Santos, Carlos Pereira"]
[Result "1/2-1/2"]
[ECO "D30"]
[EventDate "1989.08.??"]
[PlyCount "32"]

1.d4 e6 2.c4 d5 3.Nf3 c6 4.g3 dxc4 5.Bg2 b5 6.O-O Bb7 7.a4 a6 8.b3 cxb3 9.
Qxb3 Bd6 10.Nbd2 Nd7 11.Bb2 Ne7 12.Rfc1 O-O 13.Ng5 Nd5 14.Nge4 Be7 15.Rc2 
Qb6 16.e3 Rac8 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Hokkanen, Petri"]
[Black "Chung, Ronnie"]
[Result "1-0"]
[ECO "E18"]
[EventDate "1989.08.??"]
[PlyCount "76"]

1.d4 Nf6 2.Nf3 e6 3.c4 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 Ne4 8.d5 Nxc3
9.bxc3 Bf6 10.Nd4 e5 11.Nb3 d6 12.e4 Nd7 13.Re1 a5 14.a4 Ba6 15.Bf1 Rb8 
16.Be3 Bg5 17.Qd2 Bxe3 18.Qxe3 Nc5 19.Nxc5 bxc5 20.Qd2 Qd7 21.Qc2 Rb7 22.
Rab1 Rfb8 23.Rxb7 Rxb7 24.Rb1 Rxb1 25.Qxb1 Qc8 26.Qa2 Kf8 27.h4 Ke7 28.Kh2
c6 29.Bh3 Qb7 30.f4 f6 31.Be6 cxd5 32.Bxd5 Qd7 33.f5 Bb7 34.Qb3 Bxd5 35.
cxd5 Qc7 36.c4 Kd7 37.Kh3 Ke7 38.Qb5 Kd8 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Mamombe, Kudzanai"]
[Black "Parodi, Rafael"]
[Result "1-0"]
[ECO "B41"]
[EventDate "1989.08.??"]
[PlyCount "47"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bc4 b5 6.Bb3 Bb7 7.f3 Qc7 8.Be3 Nf6
9.g3 Be7 10.Nc3 Nc6 11.Qd2 Rc8 12.g4 h6 13.Qf2 Bc5 14.Ndxb5 axb5 15.Bxc5 
Nd8 16.Bb4 Bc6 17.O-O-O Nb7 18.Rhe1 Qf4+ 19.Kb1 Nxg4 20.Qh4 g5 21.Qxg4 Qf6
22.Nd5 Qg6 23.Ne7 Qg7 24.Nxc8 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Martinez Echezarreta, Arturo"]
[Black "Rodriguez, Daniel"]
[Result "0-1"]
[ECO "B40"]
[EventDate "1989.08.??"]
[PlyCount "58"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Bb4 6.e5 Nd5 7.Qg4 O-O 8.Bh6 
g6 9.Bd2 d6 10.f4 Qb6 11.a3 Qxd4 12.axb4 dxe5 13.O-O-O Ne3 14.Qf3 Nxd1 15.
Nxd1 Rd8 16.Be3 e4 17.Qe2 Qxb4 18.h4 Nc6 19.Nc3 Qa5 20.Kb1 Nb4 21.Bc1 e5 
22.b3 exf4 23.g4 Be6 24.Bb2 Rac8 25.Bh3 e3 26.Rd1 Rxd1+ 27.Qxd1 Qd8 28.Qf3
Qd2 29.Ne4 Qe1+ 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Melgosa, Marcio"]
[Black "Mera Cedeno, Angel"]
[Result "0-1"]
[ECO "B07"]
[EventDate "1989.08.??"]
[PlyCount "78"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be3 Bg7 5.Qd2 c6 6.Bd3 Ng4 7.Nf3 Nxe3 8.fxe3 
Nd7 9.O-O O-O 10.a4 a5 11.Qf2 e5 12.Ne2 b6 13.c3 Ba6 14.Bxa6 Rxa6 15.Ng3 
Qe7 16.Qe2 Raa8 17.Qc4 Rac8 18.Rad1 Bh6 19.Rfe1 Rfd8 20.b4 c5 21.Qb5 cxd4 
22.cxd4 Rc3 23.bxa5 Bxe3+ 24.Kh1 exd4 25.axb6 Ne5 26.Nxd4 Ng4 27.Rf1 Qh4 
28.Nf3 Qe7 29.a5 Rb8 30.Qb2 Rc4 31.h3 Ne5 32.Nxe5 dxe5 33.Qb3 Qc5 34.Rd5 
Rc3 35.Qd1 Qc8 36.Qe2 Bd4 37.Nh5 Rxh3+ 38.gxh3 Qxh3+ 39.Qh2 Qxf1+ 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Warner, Delisle"]
[Black "Apaza, Henry"]
[Result "0-1"]
[ECO "C05"]
[EventDate "1989.08.??"]
[PlyCount "78"]

1.d4 e6 2.e4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.f4 c5 6.c3 Nc6 7.Ndf3 Qb6 8.g3 cxd4 
9.cxd4 Bb4+ 10.Kf2 f6 11.Kg2 Nf8 12.Bd3 Bd7 13.Ne2 O-O-O 14.a3 Be7 15.b4 
Kb8 16.Bd2 Rc8 17.Rb1 g5 18.Rf1 g4 19.Ne1 h5 20.Nc2 h4 21.a4 Qc7 22.Nc3 
Ka8 23.Nb5 Qb8 24.a5 hxg3 25.hxg3 Nxe5 26.fxe5 fxe5 27.dxe5 Bxb5 28.Bxb5 
Qxe5 29.Bd3 Qg7 30.b5 e5 31.b6 e4 32.Bb5 Qh7 33.Rg1 Qh3+ 34.Kf2 Ne6 35.Bf1
Rcf8+ 36.Ke1 Rxf1+ 37.Rxf1 Qxg3+ 38.Rf2 Rh1+ 39.Ke2 Qd3# 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "10"]
[White "Zulu, David"]
[Black "Haughton, Richard"]
[Result "1-0"]
[ECO "A01"]
[EventDate "1989.08.??"]
[PlyCount "120"]

1.b3 e5 2.Bb2 Nc6 3.e3 Nf6 4.Bb5 d6 5.Ne2 a6 6.Bxc6+ bxc6 7.O-O g6 8.d3 
Bg7 9.c4 O-O 10.h3 Be6 11.Qc2 Qd7 12.Nbc3 Rae8 13.Rfd1 Nh5 14.d4 f5 15.d5 
Bf7 16.e4 c5 17.f3 f4 18.a3 a5 19.Na4 Bf6 20.Bc3 Bh4 21.Bxa5 g5 22.Be1 Ng3
23.Nxg3 fxg3 24.Rd3 h5 25.Nc3 Bg6 26.Ne2 Rf7 27.Bxg3 Bxg3 28.Nxg3 Ref8 29.
Qd2 Qd8 30.Rf1 Qf6 31.Qe3 Rh7 32.b4 cxb4 33.axb4 h4 34.Ne2 g4 35.hxg4 h3 
36.g3 Ra8 37.g5 Qe7 38.Kh2 Ra4 39.Rb3 Ra2 40.Rc1 Qe8 41.b5 Qa8 42.b6 cxb6 
43.Rxb6 Qa7 44.c5 Be8 45.c6 Rxe2+ 46.Qxe2 Qxb6 47.Rc2 Rf7 48.Rb2 Qa7 49.
Qf2 Qa3 50.f4 exf4 51.gxf4 Rxf4 52.Qxf4 Qxb2+ 53.Kxh3 Qb4 54.Kg4 Qb8 55.
Qf5 Kh8 56.Qf8+ Kh7 57.Qh6+ Kg8 58.g6 Qc8+ 59.Kf4 Qc7 60.Qh7+ Qxh7 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Polgar, Zsuzsa"]
[Black "Ulybin, Mikhail"]
[Result "1/2-1/2"]
[WhiteElo "2520"]
[BlackElo "2495"]
[ECO "E14"]
[EventDate "1989.08.??"]
[PlyCount "49"]

1.d4 e6 2.Nf3 c5 3.e3 Nf6 4.Bd3 b6 5.c4 Bb7 6.Nc3 cxd4 7.exd4 Bb4 8.O-O 
O-O 9.Bg5 Bxc3 10.bxc3 h6 11.Bh4 d6 12.Nd2 Nbd7 13.Ne4 Bxe4 14.Bxe4 Rc8 
15.Bd3 Qc7 16.Re1 Rfe8 17.a4 d5 18.Rc1 g6 19.f3 Kg7 20.Bg3 e5 21.Rb1 Re7 
22.Bh4 Re6 23.Qb3 Rce8 24.Qb5 e4 25.fxe4 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Dreev, Alexei"]
[Black "Kontic, Vladimir"]
[Result "1-0"]
[WhiteElo "2570"]
[BlackElo "2395"]
[ECO "A81"]
[EventDate "1989.08.??"]
[PlyCount "79"]

1.d4 f5 2.g3 Nf6 3.Bg2 g6 4.Nf3 Bg7 5.O-O O-O 6.b3 d6 7.Bb2 c6 8.Nbd2 Na6 
9.c4 Nc7 10.Qc2 h6 11.Ne1 Qe8 12.Nd3 g5 13.Rae1 Qh5 14.f3 Bd7 15.e4 fxe4 
16.fxe4 Bh3 17.Nf3 Bxg2 18.Qxg2 Qg6 19.Qe2 Nd7 20.Kg2 Rae8 21.Qd2 Nf6 22.
e5 Nh5 23.Ba3 Rd8 24.Qe2 Rf7 25.Qe4 Qxe4 26.Rxe4 d5 27.Rg4 Ne6 28.h4 Rdf8 
29.cxd5 cxd5 30.Nc5 Nxc5 31.Bxc5 gxh4 32.Rxh4 Rf5 33.Bxe7 Re8 34.Bb4 a5 
35.Bd2 Ref8 36.Rxh5 Rxh5 37.g4 Rxf3 38.Rxf3 Rh4 39.Rf4 b6 40.Be1 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Manor, Ilan"]
[Black "Spasov, Vasil"]
[Result "0-1"]
[WhiteElo "2445"]
[BlackElo "2430"]
[ECO "A48"]
[EventDate "1989.08.??"]
[PlyCount "104"]

1.d4 Nf6 2.Nf3 g6 3.Bg5 Bg7 4.Nbd2 c5 5.c3 cxd4 6.cxd4 O-O 7.e3 Nc6 8.Bd3 
d6 9.O-O Bd7 10.h3 Rc8 11.a3 a6 12.Qe2 Nd5 13.e4 Nc7 14.d5 Nd4 15.Nxd4 
Bxd4 16.Nc4 Bb5 17.Rad1 Bxc4 18.Bxc4 Bg7 19.Kh1 Na8 20.f4 Nb6 21.Bb3 Re8 
22.e5 f6 23.Bh4 fxe5 24.f5 Bf6 25.fxg6 hxg6 26.Bc2 Rxc2 27.Qxc2 Kg7 28.Bf2
Nd7 29.Be3 Nf8 30.Rd2 Qd7 31.Rc1 g5 32.Qc7 Qf5 33.Qxb7 Ng6 34.Qxa6 Rh8 35.
Qf1 Qe4 36.Qf3 Qxf3 37.gxf3 Rxh3+ 38.Kg2 g4 39.Bf2 Nf4+ 40.Kf1 gxf3 41.Rc4
Bg5 42.Bg1 Kf6 43.a4 Kf5 44.a5 e4 45.a6 e3 46.Rcc2 e2+ 47.Rxe2 fxe2+ 48.
Rxe2 Nxe2 49.Kxe2 Ke4 50.b4 Be3 51.a7 Bxa7 52.Bxa7 Kxd5 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Shirov, Alexei"]
[Black "Sorensen, Jan"]
[Result "1-0"]
[WhiteElo "2495"]
[BlackElo "2335"]
[ECO "A57"]
[EventDate "1989.08.??"]
[PlyCount "47"]

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.b6 d6 6.Nc3 Qxb6 7.e4 g6 8.a4 a5 9.f4
Bg7 10.Bb5+ Nfd7 11.Nf3 O-O 12.O-O Ba6 13.Qe2 Bxb5 14.axb5 Qb7 15.e5 Nb6 
16.Rd1 dxe5 17.Nxe5 Re8 18.Nxf7 Kxf7 19.Qe6+ Kf8 20.Ne4 Qd7 21.Qxb6 Bd4+ 
22.Rxd4 cxd4 23.Qxd4 Kg8 24.b3 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Koch, Jean-Rene"]
[Black "Gdanski, Jacek"]
[Result "0-1"]
[WhiteElo "2420"]
[BlackElo "2405"]
[ECO "C18"]
[EventDate "1989.08.??"]
[PlyCount "48"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 Ne7 5.a3 Bxc3+ 6.bxc3 c5 7.Qg4 Qc7 8.Qxg7 
Rg8 9.Qxh7 cxd4 10.Ne2 Nbc6 11.f4 Bd7 12.Qd3 dxc3 13.Rb1 O-O-O 14.Nxc3 Na5
15.Nb5 Bxb5 16.Rxb5 Kb8 17.g3 Rc8 18.Kd1 Nf5 19.Bh3 a6 20.Rb4 Nxg3 21.hxg3
Rxg3 22.Qe2 Rh8 23.Qf1 Qc5 24.Bb2 Nc4 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Wessman, Richard"]
[Black "Djurhuus, Rune"]
[Result "1/2-1/2"]
[WhiteElo "2370"]
[BlackElo "2415"]
[ECO "E61"]
[EventDate "1989.08.??"]
[PlyCount "130"]

1.g3 d6 2.d4 Nf6 3.Bg2 g6 4.c4 Bg7 5.Nc3 O-O 6.e3 c6 7.Nge2 Nbd7 8.O-O e5 
9.b3 Re8 10.Ba3 Bf8 11.Qc2 Qa5 12.Bb2 e4 13.d5 Nc5 14.Na4 Nfd7 15.Nxc5 
Nxc5 16.Bc3 Qa6 17.Nf4 Bf5 18.h3 h5 19.Rad1 Nd3 20.Nxd3 exd3 21.Qd2 Bg7 
22.Bxg7 Kxg7 23.Kh2 Re7 24.Rfe1 Rae8 25.dxc6 bxc6 26.Bf1 d5 27.cxd5 cxd5 
28.a4 Qc8 29.Rc1 Qe6 30.Bxd3 Bxh3 31.Bb5 Rd8 32.Qd4+ Kg8 33.Rc6 Qf5 34.Rf6
Qc8 35.Qh4 Re4 36.Rf4 Bf5 37.Qg5 Rd6 38.Rxe4 Bxe4 39.Qe7 Qf5 40.f4 Qe6 41.
Qxe6 Rxe6 42.Rc1 a6 43.Bf1 Rb6 44.Rc3 a5 45.Bb5 Rd6 46.Kg1 g5 47.fxg5 Rg6 
48.Bd3 Rxg5 49.Bxe4 dxe4 50.Kf2 Rd5 51.Rc4 f5 52.b4 axb4 53.Rxb4 Rd3 54.a5
Ra3 55.Rb5 h4 56.gxh4 Rxe3 57.Rxf5 Ra3 58.Rb5 Kg7 59.Ke2 Kg6 60.Kf2 Rh3 
61.Rb8 Rxh4 62.a6 Rh2+ 63.Ke3 Ra2 64.Rg8+ Kh7 65.Ra8 Ra4 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Stangl, Markus"]
[Black "Van Wely, Loek"]
[Result "0-1"]
[WhiteElo "2375"]
[BlackElo "2320"]
[ECO "A16"]
[EventDate "1989.08.??"]
[PlyCount "82"]

1.Nf3 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O d6 6.Nc3 Nbd7 7.d3 e5 8.Rb1 Nh5
9.b4 f5 10.Qb3 Kh8 11.Ba3 c6 12.Rfd1 g5 13.Qc2 g4 14.Nd2 Qf6 15.b5 c5 16.
Nd5 Qd8 17.e3 Nb6 18.Nb3 Be6 19.Nc3 Qc7 20.Bb2 Nf6 21.a4 Rab8 22.a5 Nc8 
23.Rbc1 Qf7 24.Ne2 Nh5 25.Rf1 Ne7 26.f4 gxf3 27.Rxf3 Rbc8 28.Rcf1 Qg6 29.
e4 a6 30.exf5 Nxf5 31.b6 Nf6 32.h3 Rf7 33.R1f2 Rcf8 34.Nd2 Bh6 35.Nf1 Ne7 
36.Ne3 Nc6 37.Bc1 Nb4 38.Qb1 Nxd3 39.Rf1 e4 40.Nf4 Nxf4 41.Rxf4 Bxf4 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Imocha, Laisram"]
[Black "Boissonet, Carlos"]
[Result "0-1"]
[WhiteElo "2315"]
[BlackElo "2340"]
[ECO "A40"]
[EventDate "1989.08.??"]
[PlyCount "64"]

1.d4 Nc6 2.c4 e5 3.d5 Nce7 4.Nc3 Ng6 5.e4 Bb4 6.Ne2 Nf6 7.f3 O-O 8.Bg5 d6 
9.Qd2 h6 10.Be3 c6 11.a3 Ba5 12.b4 Bc7 13.Ng3 cxd5 14.exd5 a5 15.Rb1 axb4 
16.axb4 Bb6 17.Bd3 Bxe3 18.Qxe3 Nf4 19.O-O Ra3 20.Bc2 N6h5 21.Nxh5 Rxc3 
22.Qd2 Rxc4 23.Nxf4 Rxf4 24.Qe3 Qg5 25.Rfd1 Bh3 26.g3 Rc8 27.Rdc1 Rfc4 28.
Qxg5 hxg5 29.Rb2 Bf5 30.Bxf5 Rxc1+ 31.Kg2 Ra8 32.b5 g6 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Rodriguez, Daniel"]
[Black "Serper, Grigory"]
[Result "0-1"]
[WhiteElo "2235"]
[BlackElo "2420"]
[ECO "B57"]
[EventDate "1989.08.??"]
[PlyCount "69"]

1.e4 c5 2.Nf3 d6 3.Nc3 Nc6 4.d4 cxd4 5.Nxd4 Nf6 6.Bc4 Qb6 7.Nb3 e6 8.O-O 
Be7 9.a4 O-O 10.Bg5 Ne5 11.Be2 a6 12.Kh1 Qc7 13.f4 Ned7 14.a5 b5 15.axb6 
Nxb6 16.Qd3 h6 17.Bh4 Rb8 18.Qg3 Bb7 19.Bd3 Nc4 20.e5 dxe5 21.fxe5 Nh5 22.
Qh3 Bxh4 23.Qxh4 Nxb2 24.Qxh5 Nxd3 25.Ne2 Qxc2 26.Nbd4 Qc5 27.Rad1 Nxe5 
28.Nf4 Rbd8 29.Nfe2 Qd5 30.Qh3 Nc4 31.Nf4 Qe4 32.Qg3 Rxd4 33.Nh5 Qxg2+ 34.
Qxg2 Bxg2+ 35.Kg1 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Brandner, Stefan"]
[Black "Moutousis, Konstantinos"]
[Result "1-0"]
[WhiteElo "2305"]
[BlackElo "2330"]
[ECO "C50"]
[EventDate "1989.08.??"]
[PlyCount "73"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 Nf6 5.Nc3 d6 6.Be3 O-O 7.Bg5 Ne7 8.Qd2 c6
9.Bxf6 gxf6 10.Qh6 Ng6 11.Ne2 d5 12.Bb3 Re8 13.Nh4 a5 14.a4 Bb4+ 15.Kf1 
Bf8 16.Qh5 Nxh4 17.Qxh4 f5 18.Qh5 fxe4 19.dxe4 Re6 20.exd5 Rg6 21.Ng3 cxd5
22.Qxe5 Be6 23.Rd1 Bg7 24.Qe2 Qb6 25.h4 Bg4 26.f3 Be6 27.Qf2 Qc7 28.Ne2 
Bxb2 29.h5 Rg7 30.Nd4 Qc5 31.h6 Rg6 32.Rh5 Rc8 33.Qe3 Bxd4 34.Rxd4 Qf8 35.
f4 Rxh6 36.Rg5+ Rg6 37.f5 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Hsu Li Yang"]
[Black "Hernandez, Gilberto"]
[Result "0-1"]
[WhiteElo "2315"]
[BlackElo "2300"]
[ECO "A25"]
[EventDate "1989.08.??"]
[PlyCount "75"]

1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 d6 6.Nge2 h5 7.h4 Bg4 8.Rb1 Nge7 
9.d3 Rb8 10.b4 a6 11.a4 a5 12.bxa5 Nxa5 13.Qd2 O-O 14.O-O b6 15.Ba3 Bd7 
16.Kh2 Kh8 17.Nb5 Be6 18.Nec3 f5 19.Nd5 Rc8 20.Bb4 Nec6 21.Bc3 Qd7 22.f4 
Nb7 23.Nb4 Nca5 24.Na7 Ra8 25.Nac6 e4 26.Bxg7+ Qxg7 27.Nxa5 Rxa5 28.dxe4 
Nc5 29.e5 Rxa4 30.exd6 Rd8 31.Qc2 Rxd6 32.Nd5 Ra8 33.Rfe1 Re8 34.Qb2 Qxb2 
35.Rxb2 Bxd5 36.Bxd5 Nd3 37.Rbe2 Nxe1 38.Rxe1 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Rodriguez Vila, Andres"]
[Black "Huda, Rehan"]
[Result "1/2-1/2"]
[WhiteElo "2295"]
[BlackElo "2230"]
[ECO "B81"]
[EventDate "1989.08.??"]
[PlyCount "76"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.g4 Be7 7.Bg2 Nc6 8.h3 O-O
9.O-O a6 10.a4 h6 11.Nb3 Na5 12.Nxa5 Qxa5 13.Bd2 Qc7 14.a5 Bd7 15.Be3 Bc6 
16.h4 d5 17.exd5 Nxd5 18.Nxd5 Bxd5 19.Bxd5 exd5 20.g5 hxg5 21.hxg5 Bc5 22.
Bxc5 Qxc5 23.Ra2 d4 24.Qg4 Rae8 25.Ra3 Qxc2 26.Qxd4 Qe4 27.Qxe4 Rxe4 28.f4
Rd8 29.Rb3 Rd7 30.Rb6 Kf8 31.b3 Ke7 32.b4 Kd8 33.b5 axb5 34.Rxb5 Ra4 35.
Kg2 Kc7 36.Kg3 Kb8 37.Rf3 Ka7 38.Rfb3 g6 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Santos, Carlos Pereira"]
[Black "Ruxton, Keith"]
[Result "0-1"]
[BlackElo "2325"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Torres Baldeon, Jean Pierre"]
[Black "Vasquez Schroder, Rodrigo"]
[Result "0-1"]
[BlackElo "2300"]
[ECO "B84"]
[EventDate "1989.08.??"]
[PlyCount "76"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 Be7 7.O-O a6 8.a4 O-O
9.Be3 Nc6 10.Kh1 Qc7 11.Nb3 b6 12.f4 Re8 13.Bf3 Bb7 14.Qe2 Bf8 15.Rad1 
Rac8 16.Qf2 Nd7 17.Rd2 Red8 18.Be2 g6 19.f5 Nce5 20.Bg5 Re8 21.Qh4 Nc5 22.
Nd4 Qd7 23.Bf4 exf5 24.exf5 Nxa4 25.Bh6 Nxc3 26.Bxf8 Rxf8 27.bxc3 f6 28.
fxg6 Nxg6 29.Qg3 f5 30.h4 Kh8 31.h5 Ne5 32.Nf3 Qe7 33.Qg5 Rf6 34.Rfd1 Rg8 
35.Qe3 Re6 36.Qf2 Ng4 37.Qd4+ Rg7 38.Bc4 Bxf3 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Martin, Benjamin"]
[Black "Martinez Echezarreta, Arturo"]
[Result "1/2-1/2"]
[WhiteElo "2280"]
[ECO "A61"]
[EventDate "1989.08.??"]
[PlyCount "139"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.Bf4 Bg7 8.Qa4+ 
Bd7 9.Qb3 b5 10.Bxd6 Qb6 11.Bg3 O-O 12.e3 c4 13.Qb4 Na6 14.Qd6 Qa5 15.Nd2 
Nb4 16.Rc1 Bf5 17.Qc5 Nc2+ 18.Kd1 Rac8 19.Qxb5 Qxb5 20.Nxb5 Nxd5 21.Nd6 c3
22.Nxc8 cxd2 23.Rxc2 Bxc2+ 24.Kxc2 Rxc8+ 25.Kxd2 Bxb2 26.Bd3 a5 27.Rb1 
Bc3+ 28.Ke2 Bb4 29.Kf3 Rc3 30.Be4 Nf6 31.Be5 Nxe4 32.Kxe4 f5+ 33.Kf3 Rc2 
34.Rb2 Rc1 35.h3 Kf7 36.Bd4 Ke6 37.Bb6 Rc6 38.Bd4 Kd5 39.Kf4 Ke6 40.Kg5 
Rc7 41.Kf4 Rc4 42.Kf3 Rc1 43.g3 Rc4 44.Ke2 Rc1 45.h4 Re1+ 46.Kd3 Rc1 47.
Ke2 Re1+ 48.Kf3 Rc1 49.Kf4 Rc4 50.Kg5 Rc7 51.Kh6 Bf8+ 52.Kg5 Be7+ 53.Kh6 
Bf8+ 54.Kg5 Be7+ 55.Kf4 Bd6+ 56.Kf3 Bb4 57.Bb6 Rc1 58.Bd8 Rc8 59.Bb6 Rc6 
60.Bd4 Rc4 61.h5 gxh5 62.a3 Bxa3 63.Rb5 a4 64.Re5+ Kf6 65.Ra5+ Ke6 66.Re5+
Kf6 67.Re8+ Kf7 68.Rh8 Ke6 69.Rxh7 Bc5 70.Bxc5 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Georges, Sascha"]
[Black "Mera Cedeno, Angel"]
[Result "0-1"]
[WhiteElo "2220"]
[ECO "A38"]
[EventDate "1989.08.??"]
[PlyCount "70"]

1.c4 Nf6 2.Nc3 g6 3.g3 c5 4.Bg2 Bg7 5.Nf3 d6 6.O-O O-O 7.d3 Nc6 8.a3 Rb8 
9.Rb1 b6 10.b4 Bb7 11.bxc5 dxc5 12.Bf4 Rc8 13.Qa4 Nd7 14.Ne4 Na5 15.Bd2 
Bxe4 16.dxe4 Nc6 17.Rfd1 Qc7 18.Bf4 e5 19.Bc1 Rfd8 20.Bb2 Nf8 21.Bh3 Ra8 
22.e3 f6 23.Rxd8 Rxd8 24.Rd1 Rd6 25.Rd5 Ne7 26.Rxd6 Qxd6 27.Qxa7 Kf7 28.a4
Qd1+ 29.Kg2 Qb3 30.Bc1 Qxc4 31.Bd2 Qxe4 32.Qxb6 g5 33.g4 h5 34.Kg3 h4+ 35.
Kg2 f5 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Apaza, Henry"]
[Black "Melgosa, Marcio"]
[Result "1/2-1/2"]
[ECO "C63"]
[EventDate "1989.08.??"]
[PlyCount "86"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.d4 fxe4 5.Nxe5 Nxe5 6.dxe5 c6 7.Be2 Qa5+ 8.
Bd2 Qxe5 9.Bc3 Qc5 10.Bh5+ Kd8 11.Nd2 e3 12.fxe3 Qxe3+ 13.Be2 Bc5 14.Rf1 
Nf6 15.Nc4 Qe6 16.b4 Nd5 17.Qd2 Re8 18.O-O-O Be3 19.Nxe3 Nxe3 20.Bd3 Nxf1 
21.Rxf1 g6 22.Qf4 Qe3+ 23.Qxe3 Rxe3 24.Rf7 h6 25.Bd4 Re6 26.Bf6+ Kc7 27.
Bxg6 a5 28.Bf5 Re2 29.Kd1 Re8 30.Be5+ Kd8 31.Bd6 Rg8 32.Bh7 Re8 33.Bg6 Rg8
34.Rh7 axb4 35.Bf7 Re8 36.Bxe8 Kxe8 37.Rxh6 Kf7 38.Rh8 b6 39.Kd2 c5 40.Bc7
b5 41.Bd6 Bb7 42.Rxa8 Bxa8 43.Bxc5 Bd5 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Castillo Melendez, Otto Rene"]
[Black "De Meyer, Geert"]
[Result "1-0"]
[ECO "C14"]
[EventDate "1989.08.??"]
[PlyCount "49"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.f4 O-O 8.Nf3 
c5 9.dxc5 Nc6 10.Bd3 f5 11.exf6 Qxf6 12.g3 Nxc5 13.O-O Bd7 14.Qd2 Be8 15.
Rae1 Bg6 16.Bxg6 Qxg6 17.Ne5 Nxe5 18.Rxe5 Rf5 19.Nxd5 exd5 20.Qxd5+ Rf7 
21.Qxc5 Raf8 22.Kh1 Qa6 23.Rfe1 Qxa2 24.b3 Qa6 25.Qd5 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Chung, Ronnie"]
[Black "Dao Thien Hai"]
[Result "1-0"]
[ECO "B25"]
[EventDate "1989.08.??"]
[PlyCount "61"]

1.e4 c5 2.Nc3 d6 3.g3 Nc6 4.Bg2 Nf6 5.d3 g6 6.f4 Bg7 7.Nf3 O-O 8.O-O a6 9.
a4 Bd7 10.h3 Qc7 11.Be3 Rfd8 12.g4 e6 13.Qe1 Nb4 14.Rc1 Bc6 15.f5 exf5 16.
gxf5 Re8 17.Qh4 Qd8 18.Bh6 Bf8 19.fxg6 fxg6 20.Ng5 Qe7 21.Rf2 Rad8 22.Rcf1
Rc8 23.Nd1 Qe5 24.Ne3 Qd4 25.Ng4 Nxg4 26.hxg4 Nxc2 27.Kh1 Ne3 28.Bxf8 h5 
29.gxh5 Nxf1 30.hxg6 Rc7 31.Qh7+ 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Haughton, Richard"]
[Black "Warner, Delisle"]
[Result "0-1"]
[ECO "D32"]
[EventDate "1989.08.??"]
[PlyCount "100"]

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 cxd4 5.Qxd4 Nc6 6.Qd1 exd5 7.e3 Nf6 8.Bb5 
Bc5 9.Nge2 O-O 10.O-O Bf5 11.a3 Bd6 12.Bxc6 bxc6 13.Nd4 Bd7 14.b4 a5 15.b5
c5 16.Nde2 Bxh2+ 17.Kxh2 Ng4+ 18.Kg3 Qg5 19.f4 Qg6 20.Kf3 Bf5 21.Ng3 Ne5+ 
22.Kf2 Nd3+ 23.Kg1 Qxg3 24.Nxd5 Be4 25.Ne7+ Kh8 26.Qe2 Rfe8 27.Nc6 Re6 28.
Ne5 Nxe5 29.fxe5 Rg6 30.Rxf7 Bxg2 31.Qf2 Bd5+ 32.Qxg3 Rxg3+ 33.Kf2 Rg2+ 
34.Kf1 Rh2 35.Rf4 g5 36.Rg4 Rf8+ 37.Ke1 h5 38.Rg1 Bc4 39.Bd2 Re2+ 40.Kd1 
Rd8 41.Ra2 Rxe3 42.Kc1 Red3 43.Rb2 Rxa3 44.Rxg5 Ra1+ 45.Kc2 Bd3+ 46.Kc3 c4
47.Rxh5+ Kg8 48.Bg5 Ra3+ 49.Kd2 c3+ 50.Kc1 Ra1+ 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Mamombe, Kudzanai"]
[Black "Zulu, David"]
[Result "0-1"]
[ECO "B48"]
[EventDate "1989.08.??"]
[PlyCount "92"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6 6.Be3 Qc7 7.Qd2 b5 8.Bd3 
Nf6 9.f3 Bb7 10.g4 Na5 11.g5 Nh5 12.a3 g6 13.O-O-O Rc8 14.Rhe1 Bxa3 15.
Ncxb5 axb5 16.bxa3 O-O 17.Qb4 Rb8 18.Rd2 Bc6 19.Rf1 Rfc8 20.Kd1 Nc4 21.Re2
Nf4 22.Nxc6 dxc6 23.Bxf4 Qxf4 24.Qc5 Rd8 25.Ke1 e5 26.Qxc6 Nb2 27.Qf6 Rxd3
28.Qxf4 Rd1+ 29.Kf2 Rxf1+ 30.Kxf1 exf4 31.Rd2 Nc4 32.Rd3 Ne3+ 33.Ke2 Nxc2 
34.Kd2 Rc8 35.Rb3 Kg7 36.Rxb5 Nxa3 37.Rb7 Rc2+ 38.Kd3 Rxh2 39.e5 Kf8 40.
Ke4 Re2+ 41.Kxf4 Nc4 42.Rb8+ Ke7 43.Rh8 Rxe5 44.Rxh7 Rf5+ 45.Kg3 Rxg5+ 46.
Kf2 Rh5 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Miguel Lago, Victor Placido"]
[Black "Rodrigues, Adriano von Pfuhl"]
[Result "1/2-1/2"]
[ECO "A30"]
[EventDate "1989.08.??"]
[PlyCount "47"]

1.Nf3 Nf6 2.g3 b6 3.Bg2 Bb7 4.O-O e6 5.c4 c5 6.d4 cxd4 7.Qxd4 Bc5 8.Qd3 
Nc6 9.Nc3 O-O 10.a3 d5 11.cxd5 Nxd5 12.Nxd5 Qxd5 13.Qxd5 exd5 14.b4 Bd4 
15.Nxd4 Nxd4 16.Ra2 Ba6 17.Re1 Rac8 18.Bf4 Rfe8 19.e3 Nc2 20.Rd1 d4 21.
exd4 Nxd4 22.Kh1 Ne2 23.Bd2 Nc3 24.Bxc3 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Parodi, Rafael"]
[Black "Cadena, Juan"]
[Result "0-1"]
[ECO "C41"]
[EventDate "1989.08.??"]
[PlyCount "39"]

1.e4 e5 2.Nf3 d6 3.Bc4 Be7 4.Nc3 Bg4 5.d3 Nc6 6.Nd5 Nd4 7.c3 Nxf3+ 8.gxf3 
Bh5 9.Rb1 c6 10.Ne3 Bf6 11.Qb3 b5 12.Bxb5 cxb5 13.Qxb5+ Qd7 14.Qd5 Rd8 15.
c4 Ne7 16.Qa5 Nc6 17.Qc3 Nd4 18.Rf1 Nxf3+ 19.Kd1 Nd4+ 20.Ke1 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Rios Parra, Alejandro"]
[Black "Segovia, Javier"]
[Result "0-1"]
[ECO "C07"]
[EventDate "1989.08.??"]
[PlyCount "134"]

1.e4 e6 2.d4 d5 3.Nd2 c5 4.Ngf3 Nf6 5.exd5 Nxd5 6.Bb5+ Bd7 7.Bxd7+ Nxd7 8.
O-O Be7 9.c4 N5f6 10.b3 O-O 11.Bb2 cxd4 12.Nxd4 Qa5 13.Qc2 Rac8 14.Rae1 
Nd5 15.Ne4 b5 16.Qe2 bxc4 17.bxc4 N5f6 18.Bc3 Qa4 19.Nd2 Nb6 20.Nf5 Bd8 
21.Nxg7 Kxg7 22.Qg4+ Kh8 23.Qh4 Nd7 24.Re3 Rg8 25.Rh3 e5 26.f4 Rg4 27.Qh6 
Rg6 28.Qh4 Rg4 29.Qe1 Qc6 30.Rff3 Bb6+ 31.Kh1 Bd4 32.fxe5 Bxc3 33.exf6 
Bxf6 34.Qb1 Nf8 35.Qf5 Rg6 36.Ne4 Bg7 37.c5 Re8 38.Rh4 Qd7 39.Qxf7 Qxf7 
40.Rxf7 Rge6 41.Ng3 Re1+ 42.Rf1 Ng6 43.Rc4 Rxf1+ 44.Nxf1 Re1 45.Kg1 Ne5 
46.Ra4 Nc6 47.Kf2 Rc1 48.Ne3 Bd4 49.Ke2 Bxc5 50.Re4 Bxe3 51.Kxe3 Re1+ 52.
Kf4 Rxe4+ 53.Kxe4 Kg7 54.a3 Kf6 55.Kd5 Ne5 56.Kc5 h5 57.Kb5 Kf5 58.a4 Nd3 
59.a5 Ne5 60.a6 Ke4 61.Kc5 Nd3+ 62.Kc6 Nb4+ 63.Kb7 Nxa6 64.Kxa6 Ke3 65.
Kxa7 Kf2 66.Kb6 Kxg2 67.h4 Kg3 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "11"]
[White "Walsh, Chris"]
[Black "Hokkanen, Petri"]
[Result "1-0"]
[ECO "B85"]
[EventDate "1989.08.??"]
[PlyCount "43"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Qc7 5.Nc3 e6 6.f4 a6 7.Be3 Be7 8.Be2 d6
9.O-O Nf6 10.Qe1 O-O 11.Qg3 Kh8 12.Kh1 Rb8 13.Rae1 Bd7 14.Nxc6 Bxc6 15.Bd3
b5 16.Bd4 Nh5 17.Qh3 Nxf4 18.Bxg7+ Kxg7 19.Rxf4 e5 20.Nd5 Qd7 21.Rg4+ Kh8 
22.Re3 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Polgar, Zsuzsa"]
[Black "Dreev, Alexei"]
[Result "0-1"]
[WhiteElo "2520"]
[BlackElo "2570"]
[ECO "D45"]
[EventDate "1989.08.??"]
[PlyCount "80"]

1.d4 e6 2.Nf3 d5 3.c4 Nf6 4.Nc3 c6 5.e3 Nbd7 6.Be2 Bd6 7.O-O O-O 8.b3 Ne4 
9.Bb2 f5 10.c5 Bc7 11.b4 a6 12.a4 Qf6 13.Qc2 Qh6 14.g3 g5 15.Rfe1 Ndf6 16.
Bf1 Bd7 17.Bg2 Be8 18.Rf1 Bg6 19.Ne5 Bxe5 20.dxe5 Ng4 21.h3 f4 22.Qe2 f3 
23.Bxf3 Nxe5 24.Bg4 Nxg4 25.hxg4 Qh3 26.Na2 h5 27.Be5 hxg4 28.f3 gxf3 29.
Rxf3 Bh5 30.Rxf8+ Rxf8 31.Qg2 Qxg2+ 32.Kxg2 Rf2+ 33.Kg1 Bf3 34.Nc3 Rg2+ 
35.Kf1 Nd2+ 36.Ke1 Rg1+ 37.Kxd2 Rxa1 38.b5 axb5 39.axb5 Kf7 40.b6 Ra8 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Ulybin, Mikhail"]
[Black "Serper, Grigory"]
[Result "1-0"]
[WhiteElo "2495"]
[BlackElo "2420"]
[ECO "B33"]
[EventDate "1989.08.??"]
[PlyCount "119"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 
b5 9.Bxf6 gxf6 10.Nd5 Bg7 11.Bd3 Ne7 12.Nxe7 Qxe7 13.c3 f5 14.Nc2 Qg5 15.
O-O f4 16.a4 bxa4 17.Rxa4 O-O 18.Qe2 Bb7 19.f3 a5 20.Rfa1 Qd8 21.Na3 f5 
22.Nc4 fxe4 23.fxe4 d5 24.exd5 Bxd5 25.Be4 Bxe4 26.Qxe4 f3 27.gxf3 Rf4 28.
Qe2 e4 29.fxe4 Qh4 30.Nd6 Be5 31.Nf5 Qh3 32.Rxa5 Rxa5 33.Qc4+ Kf8 34.Qc8+ 
Kf7 35.Qd7+ Kg6 36.Qe8+ Kg5 37.Qg8+ Kh5 38.Qxh7+ Kg4 39.Qxh3+ Kxh3 40.Rxa5
Bc7 41.Ra6 Rxe4 42.Rh6+ Kg4 43.Nd4 Be5 44.Rg6+ Kh5 45.Rg2 Bxd4+ 46.cxd4 
Rxd4 47.Kf2 Kh4 48.Ke3 Rb4 49.Kd3 Rb8 50.Kc4 Rc8+ 51.Kb5 Rb8+ 52.Kc6 Kh5 
53.Rd2 Kg6 54.h4 Kh6 55.Rg2 Kh7 56.h5 Kh6 57.Rh2 Kg7 58.h6+ Kh7 59.Kc5 
Rc8+ 60.Kd6 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Djurhuus, Rune"]
[Black "Koch, Jean-Rene"]
[Result "0-1"]
[WhiteElo "2415"]
[BlackElo "2420"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Spasov, Vasil"]
[Black "Gdanski, Jacek"]
[Result "1-0"]
[WhiteElo "2430"]
[BlackElo "2405"]
[ECO "C06"]
[EventDate "1989.08.??"]
[PlyCount "83"]

1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.Bd3 c5 5.e5 Nfd7 6.c3 Nc6 7.Ne2 cxd4 8.cxd4 f6
9.exf6 Nxf6 10.Nf3 Qc7 11.O-O Bd6 12.h3 O-O 13.Be3 Bd7 14.Rc1 Be8 15.Ng5 
Qd7 16.f4 h6 17.Nf3 Ne4 18.Ne5 Bxe5 19.dxe5 Bg6 20.Nd4 Nxd4 21.Bxd4 Bh7 
22.Qe1 Kh8 23.Qe3 a6 24.Kh2 Rac8 25.Be2 Rxc1 26.Rxc1 Rc8 27.Bh5 Kg8 28.Bg4
Bg6 29.Bd1 Kh7 30.Ba4 Qd8 31.Rf1 Qe7 32.a3 Qd8 33.g4 Qa5 34.Bd1 Nd2 35.Rf2
Nc4 36.Qe2 Be4 37.Bc2 Bxc2 38.Qxc2+ Kg8 39.Qg6 Rc6 40.g5 h5 41.Qe8+ Kh7 
42.Qxh5+ 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Van Wely, Loek"]
[Black "Shirov, Alexei"]
[Result "0-1"]
[WhiteElo "2320"]
[BlackElo "2495"]
[ECO "E92"]
[EventDate "1989.08.??"]
[PlyCount "84"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.Be3 Ng4 8.Bg5 f6 
9.Bh4 Nc6 10.O-O g5 11.Bg3 Nh6 12.d5 Ne7 13.Nd2 Ng6 14.Rc1 f5 15.exf5 Bxf5
16.Nde4 Nf4 17.c5 Bg6 18.Re1 Nxe2+ 19.Qxe2 Nf5 20.Qb5 g4 21.Qxb7 h5 22.Nb5
Rb8 23.Qa6 h4 24.a4 hxg3 25.hxg3 Nd4 26.cxd6 cxd6 27.Qxa7 Bxe4 28.Rxe4 Qf6
29.Rf1 Nxb5 30.axb5 Rxb5 31.Rxg4 Rxb2 32.Rc4 Rd2 33.Rc7 Rf7 34.g4 Rxc7 35.
Qxc7 Rxd5 36.g5 Qf7 37.Qc8+ Kh7 38.Rb1 Rd2 39.Qh3+ Kg6 40.g4 Kxg5 41.f4+ 
exf4 42.Rb5+ Be5 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Hernandez, Gilberto"]
[Black "Manor, Ilan"]
[Result "1/2-1/2"]
[WhiteElo "2300"]
[BlackElo "2445"]
[ECO "B06"]
[EventDate "1989.08.??"]
[PlyCount "112"]

1.e4 g6 2.d4 Bg7 3.Nf3 d6 4.Bc4 Nf6 5.Qe2 c6 6.Bb3 e5 7.dxe5 dxe5 8.O-O 
Qe7 9.Nc3 O-O 10.a4 a5 11.Nd2 Nbd7 12.Nc4 Nc5 13.Nb6 Bg4 14.f3 Nxb3 15.
cxb3 Ra6 16.fxg4 Rxb6 17.Bg5 Qe6 18.Be3 Rxb3 19.g5 Nd7 20.Rad1 Nb6 21.Bc5 
Re8 22.Rd6 Qc4 23.Qf2 Rxb2 24.Qxb2 Qxc5+ 25.Qf2 Qxf2+ 26.Kxf2 Bf8 27.Rd3 
Bc5+ 28.Kf3 Bd4 29.Rb1 Nd7 30.Ne2 Nc5 31.Rd2 Ne6 32.h4 Re7 33.g3 Kf8 34.
Nc1 Rc7 35.Nb3 Ke7 36.Ke2 Bc3 37.Rd3 Bb4 38.Rc1 b6 39.Rc4 Bc5 40.Nxc5 Nxc5
41.Rd1 Ne6 42.Ke3 Nd4 43.Rb1 Rb7 44.Rc5 b5 45.axb5 Kd6 46.bxc6 Rxb1 47.c7 
Rb3+ 48.Kf2 Rb2+ 49.Kf1 Kxc5 50.c8=Q+ Kb4 51.Qb8+ Kc3 52.Qxe5 a4 53.Qc5+ 
Kb3 54.Qd5+ Kc3 55.Qc5+ Kb3 56.Qxd4 a3 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Boissonet, Carlos"]
[Black "Wessman, Richard"]
[Result "0-1"]
[WhiteElo "2340"]
[BlackElo "2370"]
[ECO "D94"]
[EventDate "1989.08.??"]
[PlyCount "80"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 O-O 6.Be2 dxc4 7.Bxc4 c5 8.dxc5 
Qa5 9.Qe2 Ne4 10.O-O Nxc3 11.bxc3 Nc6 12.Rb1 Qxc5 13.h3 Na5 14.Bd3 b6 15.
e4 Be6 16.Be3 Qxc3 17.Ng5 Bc4 18.Bxc4 Qxc4 19.Qg4 h6 20.Nf3 Qxa2 21.Qh4 g5
22.Bxg5 hxg5 23.Nxg5 Rfd8 24.e5 Qc2 25.Rb4 Nc6 26.Rc4 Qg6 27.Rxc6 Qxc6 28.
e6 f6 29.Qh5 fxg5 30.Qf7+ Kh7 31.Qh5+ Bh6 32.Qf7+ Kh8 33.Qg6 Qc3 34.Qxh6+ 
Kg8 35.f4 Qg7 36.Qh5 Rd5 37.h4 Rf8 38.hxg5 Qd4+ 39.Kh1 Qh8 40.Qxh8+ Kxh8 
0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Kontic, Vladimir"]
[Black "Brandner, Stefan"]
[Result "1-0"]
[WhiteElo "2395"]
[BlackElo "2305"]
[ECO "C54"]
[EventDate "1989.08.??"]
[PlyCount "49"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d3 a6 6.O-O d6 7.a4 Be6 8.Bxe6 fxe6
9.d4 exd4 10.cxd4 Bb6 11.d5 exd5 12.exd5 Ne5 13.Ng5 Nfg4 14.a5 Ba7 15.Ra4 
Nxf2 16.Rxf2 Rf8 17.Rf4 Rxf4 18.Bxf4 Qf6 19.Ne6 Kd7 20.Bg3 h5 21.Nc3 Ng4 
22.Ne4 Bxf2+ 23.Nxf2 Nxf2 24.Qa4+ c6 25.Qb4 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Stangl, Markus"]
[Black "Vasquez Schroder, Rodrigo"]
[Result "1-0"]
[WhiteElo "2375"]
[BlackElo "2300"]
[ECO "E68"]
[EventDate "1989.08.??"]
[PlyCount "96"]

1.Nf3 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.d4 d6 6.O-O Nbd7 7.Nc3 e5 8.e4 exd4
9.Nxd4 Re8 10.h3 a6 11.Be3 Rb8 12.g4 Ne5 13.b3 c5 14.Nde2 b5 15.f4 Nexg4 
16.hxg4 Nxg4 17.Bf2 f5 18.exf5 b4 19.Bd5+ Kh8 20.Ne4 Bxf5 21.Ng5 Nh6 22.
Ng3 Bg4 23.Qxg4 Bxa1 24.Qh3 Bg7 25.N3e4 Re7 26.Kg2 Qd7 27.Be6 Qc6 28.Rh1 
Rbe8 29.Bd5 Qc7 30.Ne6 Qd7 31.Nxg7 Qxh3+ 32.Rxh3 Kxg7 33.Nxd6 Rf8 34.Bxc5 
Rxf4 35.Be3 Rg4+ 36.Kf3 Nf5 37.Bc5 Rg5 38.Ne4 Rxe4 39.Bxe4 Nh4+ 40.Rxh4 
Rxc5 41.Bd5 h5 42.Ke4 Kh6 43.Kd4 Rc7 44.Rh1 g5 45.Bf3 h4 46.c5 Rf7 47.Bd5 
Re7 48.c6 Kh5 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Moutousis, Konstantinos"]
[Black "Martin, Benjamin"]
[Result "0-1"]
[WhiteElo "2330"]
[BlackElo "2280"]
[ECO "C18"]
[EventDate "1989.08.??"]
[PlyCount "114"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.Qg4 Qc7 8.Qxg7 
Rg8 9.Qxh7 cxd4 10.Ne2 Nbc6 11.f4 Bd7 12.Qd3 dxc3 13.Nxc3 a6 14.Rb1 Na5 
15.h4 O-O-O 16.h5 Nf5 17.Rh3 Qc5 18.Nd1 Bb5 19.Qc3 Nc4 20.h6 Rg6 21.h7 Rh8
22.Qf3 Rg7 23.g4 Ne7 24.Qf2 Qc7 25.Bd3 Rxg4 26.Rg3 Rxg3 27.Qxg3 Ng6 28.Qh3
Qc5 29.Nf2 Kb8 30.Bxg6 fxg6 31.Qxe6 Ne3 32.Qg8+ Ka7 33.Rxb5 Nxc2+ 34.Kd1 
axb5 35.Nd3 Qc3 36.Qxd5 Rxh7 37.Qc5+ Qxc5 38.Nxc5 Nd4 39.Be3 Nf5 40.Bf2 
Kb8 41.Ke2 Rh3 42.Nd7+ Kc7 43.Nf8 Rxa3 44.Nxg6 b4 45.Bc5 Ra6 46.Ne7 Nxe7 
47.Bxe7 b3 48.Kd2 Rc6 49.Ba3 Rc2+ 50.Kd3 b5 51.f5 Rf2 52.Kc3 b4+ 53.Kxb4 
b2 54.Bxb2 Rxb2+ 55.Kc5 Kd7 56.Kd5 Ke7 57.Ke4 Rf2 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Huda, Rehan"]
[Black "Sorensen, Jan"]
[Result "1/2-1/2"]
[WhiteElo "2230"]
[BlackElo "2335"]
[ECO "A39"]
[EventDate "1989.08.??"]
[PlyCount "21"]

1.Nf3 Nf6 2.c4 c5 3.Nc3 g6 4.g3 Bg7 5.Bg2 O-O 6.O-O Nc6 7.d4 cxd4 8.Nxd4 
Nxd4 9.Qxd4 d6 10.Qd3 a6 11.Bd2 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Rodriguez, Daniel"]
[Black "Imocha, Laisram"]
[Result "1-0"]
[WhiteElo "2235"]
[BlackElo "2315"]
[ECO "C11"]
[EventDate "1989.08.??"]
[PlyCount "61"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 dxe4 5.Nxe4 Be7 6.Bxf6 gxf6 7.Nf3 f5 8.Nc3
c6 9.Qd2 Nd7 10.g3 Qc7 11.Bg2 b6 12.O-O-O Bb7 13.Ne5 Nf6 14.Rhe1 Rd8 15.
Qh6 Rg8 16.Kb1 b5 17.Bf3 Qb6 18.h3 Rf8 19.g4 fxg4 20.hxg4 Nd7 21.Qxh7 b4 
22.Na4 Qb5 23.b3 Nb6 24.Nxb6 axb6 25.Be4 Ra8 26.Re3 Qa6 27.a4 b5 28.d5 
bxa4 29.dxe6 Bd6 30.Rxd6 Qf1+ 31.Ka2 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Ruxton, Keith"]
[Black "Torres Baldeon, Jean Pierre"]
[Result "1-0"]
[WhiteElo "2325"]
[ECO "C73"]
[EventDate "1989.08.??"]
[PlyCount "59"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.Bxc6+ bxc6 6.d4 f6 7.Nc3 Ne7 8.h4 h5
9.Be3 Ng6 10.Qd2 Be7 11.O-O-O a5 12.Kb1 Bg4 13.Rdg1 Qb8 14.Ne1 Qb7 15.f3 
Be6 16.g4 Rb8 17.b3 hxg4 18.h5 Nf8 19.d5 Bd7 20.fxg4 c5 21.g5 c4 22.g6 
cxb3 23.cxb3 Rg8 24.h6 f5 25.h7 Rh8 26.Bh6 Bf6 27.Bg5 Bxg5 28.Qxg5 fxe4 
29.Rf1 Bb5 30.Rf7 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Segovia, Javier"]
[Black "Hsu Li Yang"]
[Result "1/2-1/2"]
[BlackElo "2315"]
[ECO "B03"]
[EventDate "1989.08.??"]
[PlyCount "93"]

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 dxe5 6.fxe5 Nc6 7.Be3 Bf5 8.Nc3 e6
9.Nf3 Be7 10.d5 exd5 11.cxd5 Nb4 12.Nd4 Bd7 13.Qf3 c5 14.dxc6 Bxc6 15.Nxc6
Nxc6 16.Bb5 O-O 17.Bxc6 bxc6 18.O-O Nc4 19.Bf4 Qd4+ 20.Kh1 Nxe5 21.Bxe5 
Qxe5 22.Qxc6 Bd6 23.g3 Rae8 24.Rad1 Bb8 25.Rd5 Qe3 26.Rdf5 Re5 27.R5f3 Qc5
28.Qxc5 Rxc5 29.Rd1 h5 30.Rd7 Rc7 31.Rfd3 Re8 32.Kg2 Kf8 33.Kf3 g6 34.a4 
a6 35.a5 h4 36.b4 hxg3 37.hxg3 Rxd7 38.Rxd7 Bxg3 39.Ne4 Be1 40.Rb7 f5 41.
Nc5 g5 42.b5 g4+ 43.Kg2 Bh4 44.Nd3 axb5 45.a6 Bf6 46.Nf4 Bd4 47.a7 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Castillo Melendez, Otto Rene"]
[Black "Rodriguez Vila, Andres"]
[Result "0-1"]
[BlackElo "2295"]
[ECO "C15"]
[EventDate "1989.08.??"]
[PlyCount "60"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Ne2 dxe4 5.a3 Bxc3+ 6.Nxc3 Nc6 7.Bb5 Ne7 8.Bg5
f6 9.Bf4 O-O 10.Qd2 Nxd4 11.O-O-O e5 12.Nxe4 Be6 13.Be2 c5 14.Bg3 Qd5 15.
Nc3 Qc6 16.f4 e4 17.Bf2 Rad8 18.Qe1 Rb8 19.g4 b5 20.f5 Bf7 21.Rg1 a5 22.g5
Nexf5 23.gxf6 b4 24.Bxd4 cxd4 25.Qf2 bxc3 26.Qxf5 cxb2+ 27.Kb1 g6 28.Bh5 
Ba2+ 29.Kxa2 b1=Q+ 30.Rxb1 Qxc2+ 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Parodi, Rafael"]
[Black "Georges, Sascha"]
[Result "0-1"]
[BlackElo "2220"]
[ECO "A15"]
[EventDate "1989.08.??"]
[PlyCount "62"]

1.Nf3 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O d5 6.cxd5 Nxd5 7.Nc3 Nc6 8.Qb3 
Nb6 9.d3 Bg4 10.Be3 Qc8 11.Rfc1 e5 12.Qd1 h6 13.Bc5 Rd8 14.Qc2 Qd7 15.a4 
a5 16.Ba3 Bxf3 17.exf3 Qxd3 18.Bc5 Qxc2 19.Rxc2 Nd4 20.Bxd4 exd4 21.Nd1 c6
22.f4 d3 23.Rcc1 Re8 24.Nc3 d2 25.Rf1 Nc4 26.Rab1 Rad8 27.Bf3 Rd3 28.Be4 
Rxc3 29.bxc3 Rxe4 30.Rxb7 Bxc3 31.Rbb1 Re1 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "De Meyer, Geert"]
[Black "Apaza, Henry"]
[Result "1/2-1/2"]
[ECO "A94"]
[EventDate "1989.08.??"]
[PlyCount "23"]

1.d4 e6 2.c4 f5 3.Nf3 Nf6 4.g3 Be7 5.Bg2 O-O 6.O-O d5 7.b3 c6 8.Ba3 Nbd7 
9.Bxe7 Qxe7 10.Nbd2 Ne4 11.Rc1 g5 12.e3 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Haughton, Richard"]
[Black "Mamombe, Kudzanai"]
[Result "1-0"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Martinez Echezarreta, Arturo"]
[Black "Walsh, Chris"]
[Result "1/2-1/2"]
[ECO "E30"]
[EventDate "1989.08.??"]
[PlyCount "58"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5 h6 5.Bh4 c5 6.e3 d5 7.Nf3 Nc6 8.a3 Bxc3+ 
9.bxc3 g5 10.Bg3 Qa5 11.Qb3 Ne4 12.Rc1 g4 13.Ne5 Nxg3 14.Nxc6 Qb6 15.Qxb6 
axb6 16.hxg3 bxc6 17.Ra1 Ba6 18.cxd5 Bxf1 19.Kxf1 cxd5 20.Ke2 Kd7 21.Kd2 
Ra5 22.Kc2 c4 23.Rhb1 Kc7 24.Rb4 Rha8 25.a4 b5 26.Kb2 Rxa4 27.Raxa4 Rxa4 
28.Rxa4 bxa4 29.Ka3 Kb6 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Melgosa, Marcio"]
[Black "Warner, Delisle"]
[Result "1-0"]
[ECO "C15"]
[EventDate "1989.08.??"]
[PlyCount "47"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.a3 Be7 5.Bd3 dxe4 6.Nxe4 Nf6 7.Nf3 Nbd7 8.O-O 
O-O 9.Re1 b6 10.Ng3 Bb7 11.b3 Re8 12.Bb2 Nf8 13.Ne5 Ng6 14.Qd2 a6 15.Rad1 
Nd5 16.c4 Bg5 17.Qc2 Ndf4 18.Be4 Qc8 19.d5 exd5 20.cxd5 Bf6 21.Nc6 Bxb2 
22.Qxb2 Qd7 23.Nf5 Rxe4 24.Qxg7# 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Mera Cedeno, Angel"]
[Black "Rios Parra, Alejandro"]
[Result "1-0"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Miguel Lago, Victor Placido"]
[Black "Cadena, Juan"]
[Result "1-0"]
[ECO "C42"]
[EventDate "1989.08.??"]
[PlyCount "95"]

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.Qe2 Qe7 6.d3 Nf6 7.Nc3 Bg4 8.Be3 
Nbd7 9.h3 Bxf3 10.Qxf3 c6 11.O-O-O Ne5 12.Qf4 Qc7 13.g4 Be7 14.g5 Nfd7 15.
h4 a5 16.d4 Ng6 17.Qg3 b5 18.h5 Ngf8 19.Bg2 Rc8 20.g6 hxg6 21.hxg6 Rxh1 
22.gxf7+ Kxf7 23.Rxh1 d5 24.f4 b4 25.Na4 Bf6 26.Qf3 Qd6 27.f5 Qe7 28.Rh8 
Ke8 29.Qg3 g6 30.Rg8 gxf5 31.Bh3 Qh7 32.c3 Kf7 33.Rg5 Bxg5 34.Bxg5 Ne6 35.
Qd6 Ndf8 36.Qe7+ Kg6 37.Qf6+ Kh5 38.Bxf5 Qg7 39.Qxg7 Nxg7 40.Bxc8 Kxg5 41.
Bb7 bxc3 42.bxc3 Nf5 43.Bxc6 Ne7 44.Bb5 Ne6 45.Bd7 Nd8 46.Kc2 Kf4 47.Nb6 
Ke3 48.Kb3 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Rodrigues, Adriano von Pfuhl"]
[Black "Hokkanen, Petri"]
[Result "0-1"]
[ECO "B85"]
[EventDate "1989.08.??"]
[PlyCount "82"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Qc7 5.Nc3 e6 6.Be2 a6 7.O-O Be7 8.Kh1 
Nf6 9.f4 d6 10.Be3 O-O 11.Qe1 Nxd4 12.Bxd4 b5 13.a3 Bb7 14.Qg3 Bc6 15.Rae1
Qb7 16.Bd3 b4 17.axb4 Qxb4 18.Ne2 Qb7 19.e5 dxe5 20.fxe5 Ne8 21.Nf4 Rd8 
22.c3 Bb5 23.Be4 Bc6 24.Bb1 Qxb2 25.Rf2 Qb7 26.Nh5 g6 27.Nf6+ Nxf6 28.exf6
Bd6 29.Qh4 Rfe8 30.Be3 Qb5 31.Bh6 Qh5 32.Qxh5 gxh5 33.c4 Bc5 34.Ra2 Bb4 
35.Rc1 a5 36.Re2 Rd4 37.h3 Red8 38.Rf2 Bd2 39.Bxd2 Rxd2 40.Rxd2 Rxd2 41.
Rg1 a4 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Santos, Carlos Pereira"]
[Black "Chung, Ronnie"]
[Result "1-0"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "12"]
[White "Zulu, David"]
[Black "Dao Thien Hai"]
[Result "0-1"]
[ECO "A01"]
[EventDate "1989.08.??"]
[PlyCount "80"]

1.b3 d5 2.Bb2 Nf6 3.e3 c6 4.f4 Bf5 5.Nf3 Nbd7 6.Be2 e6 7.O-O h6 8.a4 Bd6 
9.Nd4 Bh7 10.d3 Qc7 11.Ba3 g5 12.Nc3 Bxa3 13.Rxa3 gxf4 14.Qd2 c5 15.Ncb5 
Qb8 16.Nf3 a6 17.Nc3 fxe3 18.Qxe3 d4 19.Nxd4 cxd4 20.Qxd4 Qa7 21.Qxa7 Rxa7
22.b4 Ke7 23.Nd1 Ne5 24.Rb3 a5 25.b5 Nfd7 26.Ne3 b6 27.Ra3 Rd8 28.Bd1 Rc7 
29.Rf2 Nf6 30.Nc4 Rxc4 31.dxc4 Rxd1+ 32.Rf1 Rxf1+ 33.Kxf1 Bxc2 34.Kf2 Bd3 
35.Kg3 Bxc4 36.Kh4 Be2 37.h3 h5 38.Rc3 Bd3 39.Rc7+ Kf8 40.Rc8+ Kg7 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Dreev, Alexei"]
[Black "Shirov, Alexei"]
[Result "1/2-1/2"]
[WhiteElo "2570"]
[BlackElo "2495"]
[ECO "E98"]
[EventDate "1989.08.??"]
[PlyCount "65"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6 8.d5 Ne7 
9.Ne1 Nd7 10.Nd3 f5 11.Bd2 Kh8 12.Rc1 c5 13.dxc6 bxc6 14.c5 d5 15.exd5 
cxd5 16.Bg5 Bb7 17.Nb5 Bc6 18.Nb4 Nf6 19.Nd6 Qd7 20.Nxc6 Qxc6 21.Bb5 Qc7 
22.Re1 h6 23.Bd2 a6 24.Ba4 Ne4 25.Bb4 Nc6 26.Ba3 Nd4 27.Bb3 Qc6 28.Ba4 Qc7
29.f3 Ng5 30.Bb3 Qc6 31.Ba4 Qc7 32.Bb3 Qc6 33.Ba4 1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Spasov, Vasil"]
[Black "Ulybin, Mikhail"]
[Result "1-0"]
[WhiteElo "2430"]
[BlackElo "2495"]
[ECO "C06"]
[EventDate "1989.08.??"]
[PlyCount "87"]

1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.c3 c5 6.Bd3 Nc6 7.Ne2 cxd4 8.cxd4 f6
9.exf6 Nxf6 10.Nf3 Bd6 11.O-O O-O 12.Bf4 Bxf4 13.Nxf4 Ne4 14.Nh5 g6 15.Ng3
Nxg3 16.hxg3 Qb6 17.Qa4 a6 18.Rad1 Bd7 19.Qa3 Nxd4 20.Nxd4 Qxd4 21.Bxg6 
Qf6 22.Bb1 Bb5 23.Bd3 Bxd3 24.Rxd3 Rac8 25.Rf3 Qg7 26.Re1 Rc6 27.Qb4 b5 
28.b3 Rfc8 29.Rfe3 Re8 30.Re5 Qg6 31.Qh4 h6 32.g4 Kg7 33.Rh5 Rh8 34.g5 e5 
35.gxh6+ Rxh6 36.Rxh6 Qxh6 37.Qe7+ Kg8 38.Qxe5 Rd6 39.Re3 Qf6 40.Qe8+ Kg7 
41.Rg3+ Kh6 42.Qg8 Qa1+ 43.Kh2 Qe5 44.f4 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Koch, Jean-Rene"]
[Black "Polgar, Zsuzsa"]
[Result "1-0"]
[WhiteElo "2390"]
[BlackElo "2520"]
[ECO "C99"]
[EventDate "1989.08.??"]
[PlyCount "119"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 
9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 cxd4 13.cxd4 Rd8 14.b3 Nc6 15.Bb2 d5 
16.Rc1 Qb6 17.exd5 Nxd5 18.Nxe5 Nxe5 19.Rxe5 Bf6 20.Bxh7+ Kxh7 21.Qh5+ Kg8
22.Rxd5 Bb7 23.Rdc5 Bxd4 24.Bxd4 Rxd4 25.Nf3 Bxf3 26.Qxf3 Rad8 27.Rc7 Qe6 
28.R1c6 R4d6 29.Rxd6 Rxd6 30.Ra7 Qe1+ 31.Kh2 Qe5+ 32.Qg3 Qd5 33.Re7 Rg6 
34.Re8+ Kh7 35.Qh4+ Rh6 36.Qd8 Qd6+ 37.Kg1 Qxd8 38.Rxd8 Rc6 39.Ra8 g5 40.
g4 Kg6 41.Kg2 Kf6 42.Ra7 Ke6 43.Kf3 Kf6 44.Ke4 Rd6 45.f4 Re6+ 46.Kf3 gxf4 
47.Kxf4 Rd6 48.Ke4 Kg6 49.Ke5 Re6+ 50.Kd5 Rf6 51.h4 b4 52.Kc5 Kg7 53.Kxb4 
Rf4+ 54.Kc3 Rxg4 55.Rxa6 Rxh4 56.b4 Rh3+ 57.Kc4 Kf8 58.b5 Ke7 59.Kc5 Rh5+ 
60.Kc6 1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Manor, Ilan"]
[Black "Van Wely, Loek"]
[Result "1-0"]
[WhiteElo "2445"]
[BlackElo "2340"]
[ECO "E85"]
[EventDate "1989.08.??"]
[PlyCount "93"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.dxe5 dxe5 8.Qxd8 
Rxd8 9.Nd5 Nxd5 10.cxd5 c6 11.Bc4 cxd5 12.Bxd5 Nc6 13.Rd1 Nd4 14.Bxd4 exd4
15.Ne2 Be6 16.Bxe6 fxe6 17.Nf4 Bh6 18.Nxe6 Rd6 19.Nc7 Rc8 20.Nd5 Rc2 21.
Rxd4 Kf7 22.O-O Rxb2 23.f4 Rxa2 24.e5 Rd7 25.Re1 Ke6 26.g4 Bf8 27.f5+ gxf5
28.Nf4+ Ke7 29.Rxd7+ Kxd7 30.gxf5 Bc5+ 31.Kh1 Bd4 32.Re4 Rd2 33.f6 Ke8 34.
Nh5 Rd1+ 35.Kg2 Rg1+ 36.Kf3 Bc3 37.Re3 Bb2 38.Re2 Bc3 39.Kf4 h6 40.Ng3 b5 
41.Kf5 Rd1 42.Ne4 b4 43.Ke6 Bxe5 44.Kxe5 a5 45.Ke6 a4 46.f7+ Kf8 47.Nf6 
1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Gdanski, Jacek"]
[Black "Wessman, Richard"]
[Result "0-1"]
[WhiteElo "2405"]
[BlackElo "2370"]
[ECO "C69"]
[EventDate "1989.08.??"]
[PlyCount "72"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O f6 6.d4 exd4 7.Nxd4 c5 8.Nb3 
Qxd1 9.Rxd1 Bd7 10.Bf4 O-O-O 11.Nc3 Be6 12.Rxd8+ Kxd8 13.a4 Bd6 14.Rd1 Ke7
15.Be3 b6 16.a5 Nh6 17.h3 g5 18.h4 Ng4 19.hxg5 Nxe3 20.gxf6+ Kxf6 21.fxe3 
Bxb3 22.cxb3 bxa5 23.Rd5 Rb8 24.Rf5+ Ke6 25.Na4 Rb5 26.Rh5 c4 27.Rh6+ Kf7 
28.bxc4 Rb4 29.b3 Rxb3 30.Rxh7+ Kg6 31.Rh4 Rxe3 32.e5 Bxe5 33.Rh3 Bg3 34.
Rxg3+ Rxg3 35.Kf2 Rg4 36.Ke3 Rxc4 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Kontic, Vladimir"]
[Black "Stangl, Markus"]
[Result "0-1"]
[WhiteElo "2395"]
[BlackElo "2375"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Serper, Grigory"]
[Black "Hernandez, Gilberto"]
[Result "1-0"]
[WhiteElo "2420"]
[BlackElo "2300"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Rodriguez Vila, Andres"]
[Black "Djurhuus, Rune"]
[Result "0-1"]
[WhiteElo "2295"]
[BlackElo "2415"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Vasquez Schroder, Rodrigo"]
[Black "Ruxton, Keith"]
[Result "1-0"]
[WhiteElo "2300"]
[BlackElo "2325"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Martin, Benjamin"]
[Black "Boissonet, Carlos"]
[Result "0-1"]
[WhiteElo "2280"]
[BlackElo "2340"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Sorensen, Jan"]
[Black "Rodriguez, Daniel"]
[Result "1-0"]
[WhiteElo "2335"]
[BlackElo "2235"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Imocha, Laisram"]
[Black "Huda, Rehan"]
[Result "1/2-1/2"]
[WhiteElo "2315"]
[BlackElo "2230"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Mera Cedeno, Angel"]
[Black "Martinez Echezarreta, Arturo"]
[Result "1-0"]
[WhiteElo "2410"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Moutousis, Konstantinos"]
[Black "Castillo Melendez, Otto Rene"]
[Result "1-0"]
[WhiteElo "2330"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Walsh, Chris"]
[Black "Hsu Li Yang"]
[Result "0-1"]
[BlackElo "2315"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

{Colour assignment not confirmed.} 
0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Brandner, Stefan"]
[Black "Segovia, Javier"]
[Result "1-0"]
[WhiteElo "2305"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "De Meyer, Geert"]
[Black "Melgosa, Marcio"]
[Result "1-0"]
[BlackElo "2300"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

{Colour assignment not confirmed.} 
1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Georges, Sascha"]
[Black "Santos, Carlos Pereira"]
[Result "1/2-1/2"]
[WhiteElo "2220"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

1/2-1/2

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Chung, Ronnie"]
[Black "Haughton, Richard"]
[Result "0-1"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Dao Thien Hai"]
[Black "Apaza, Henry"]
[Result "1-0"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Hokkanen, Petri"]
[Black "Miguel Lago, Victor Placido"]
[Result "0-1"]
[ECO "E69"]
[EventDate "1989.08.??"]
[PlyCount "92"]

1.Nf3 Nf6 2.d4 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O d6 6.c4 Nbd7 7.Nc3 e5 8.e4 c6 
9.h3 Qb6 10.dxe5 dxe5 11.Qc2 Qc7 12.b3 Re8 13.Ba3 Bf8 14.Bxf8 Nxf8 15.Rad1
Ne6 16.Qd2 Kg7 17.Qe3 b6 18.Nh4 Ng8 19.f4 f6 20.Ne2 Bb7 21.Nf3 Rad8 22.
fxe5 fxe5 23.Rxd8 Nxd8 24.g4 Qd6 25.Qc1 Nf6 26.Ng3 Ne6 27.Nh4 Qc5+ 28.Kh2 
Nf4 29.Qd2 Bc8 30.Nf3 Bxg4 31.b4 Qe7 32.hxg4 Nxg4+ 33.Kg1 Rd8 34.Qb2 Nd3 
35.Qb1 Ne3 36.a3 h5 37.Qb3 Qf6 38.Rb1 h4 39.Ne2 g5 40.a4 g4 41.Nc1 gxf3 
42.Nxd3 Qg5 43.Rb2 Nxg2 44.Kh1 Ne3 45.Rh2 Ng4 46.Rc2 Qe3 0-1

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Mamombe, Kudzanai"]
[Black "Cadena, Juan"]
[Result "1-0"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Rodrigues, Adriano von Pfuhl"]
[Black "Parodi, Rafael"]
[Result "1-0"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Torres Baldeon, Jean Pierre"]
[Black "Zulu, David"]
[Result "1-0"]
[ECO "A00"]
[EventDate "1989.08.??"]
[PlyCount "0"]

1-0

[Event "28th World U20 ch"]
[Site "Tunja COL"]
[Date "1989.??.??"]
[Round "13"]
[White "Warner, Delisle"]
[Black "Rios Parra, Alejandro"]
[Result "1-0"]
[ECO "A67"]
[EventDate "1989.08.??"]
[PlyCount "69"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Bb5+ Nfd7
9.a4 O-O 10.Nf3 Na6 11.O-O Nb4 12.Re1 a6 13.Bf1 Re8 14.Kh1 b6 15.Qb3 Ra7 
16.Bc4 f5 17.e5 dxe5 18.d6+ Kh8 19.Ng5 Nf6 20.Nf7+ Rxf7 21.Bxf7 Nd3 22.
Bxe8 Nxe1 23.Qd1 Nxg2 24.Bc6 Nxf4 25.Bxf4 exf4 26.Qd2 Bd7 27.Bxd7 Qxd7 28.
Re1 f3 29.Re7 Qc6 30.Kg1 f2+ 31.Kxf2 Bf8 32.Re6 Bh6 33.Qe2 Bg5 34.Qe5 Be3+
35.Kxe3 1-0

