[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "1"]
[White "Cifuentes, Roberto"]
[Black "Bernat, Miguel"]
[Result "1/2-1/2"]
[ECO "D63"]
[EventDate "1977.??.??"]
[PlyCount "36"]

1.c4 e6 2.Nc3 d5 3.d4 Nf6 4.Bg5 Be7 5.Nf3 O-O 6.e3 Nbd7 7.Rc1 h6 8.Bf4 c5 
9.cxd5 exd5 10.dxc5 Nxc5 11.Be2 Be6 12.O-O a6 13.Nd4 Rc8 14.Bf3 Qb6 15.Qe2
Nfe4 16.Rfd1 Bf6 17.h3 Rfd8 18.Bg4 Kh8 1/2-1/2

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "1"]
[White "Clara Melendez, Romeo"]
[Black "Delgado, Felipe"]
[Result "1/2-1/2"]
[ECO "C32"]
[EventDate "1977.??.??"]
[PlyCount "41"]

1.e4 e5 2.f4 d5 3.exd5 e4 4.d3 Nf6 5.Nd2 Qxd5 6.dxe4 Nxe4 7.Bc4 Qc6 8.Qe2 
Kd8 9.Qxe4 Qb6 10.Bxf7 Bc5 11.Nc4 Qf6 12.Qd5+ Nd7 13.Ne5 Qe7 14.Bd2 c6 15.
Qd3 Kc7 16.Nf3 Rf8 17.Bb3 a5 18.a3 Nxe5 19.Nxe5 Bg4 20.h3 Qxe5+ 21.fxe5 
1/2-1/2

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "1"]
[White "Ferrao, Luis"]
[Black "Hernandez, Hugo"]
[Result "0-1"]
[ECO "B77"]
[EventDate "1977.??.??"]
[PlyCount "72"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Bc4 
Nc6 9.Qd2 Bd7 10.h4 Qc7 11.Bb3 Rfc8 12.O-O-O Ne5 13.h5 Nc4 14.Bxc4 Qxc4 
15.hxg6 fxg6 16.g4 b5 17.Kb1 Qf7 18.Qh2 Rab8 19.Nd5 Bh8 20.Bg5 Nxd5 21.
exd5 Be5 22.Qh4 Rc4 23.Be3 Rbc8 24.Rd2 R8c7 25.Ne6 Bxe6 26.dxe6 Qg7 27.Bh6
Qh8 28.Re1 Rb4 29.b3 Ba1 30.c4 bxc4 31.Re4 Rcb7 32.Rf4 Rxb3+ 33.axb3 Rxb3+
34.Ka2 Rb2+ 35.Ka3 Qc3+ 36.Ka4 Qb4# 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "1"]
[White "McCambridge, Vincent"]
[Black "Braga, Cicero Nogueira"]
[Result "0-1"]
[ECO "E97"]
[EventDate "1977.??.??"]
[PlyCount "110"]

1.c4 g6 2.Nc3 Bg7 3.d4 Nf6 4.e4 d6 5.Be2 O-O 6.Nf3 e5 7.O-O Nc6 8.d5 Ne7 
9.b4 Nh5 10.c5 h6 11.Nd2 Nf4 12.Nc4 Nxe2+ 13.Qxe2 f5 14.f3 f4 15.Ba3 Rf6 
16.Rac1 g5 17.Nb5 Ng6 18.cxd6 cxd6 19.Na5 Rf7 20.Kh1 a6 21.Nc3 h5 22.Qe1 
g4 23.Ne2 Bf8 24.Ng1 Be7 25.Nc4 Bd7 26.Qd2 Bb5 27.Rc3 Rg7 28.Rfc1 Nh4 29.
R1c2 Bf8 30.Qe1 Ba4 31.Rd2 Rc8 32.Bb2 Rgc7 33.Qc1 Bb5 34.Rdc2 Qg5 35.g3 
Nxf3 36.gxf4 Qxf4 37.Qxf4 exf4 38.Nxf3 Rxc4 39.Ng5 Rxc3 40.Rxc3 Rxc3 41.
Bxc3 Bh6 42.Bf6 f3 43.Kg1 Bg7 44.Bxg7 Kxg7 45.Kf2 Kf6 46.h4 Ke5 47.Ke3 Be8
48.Ne6 f2 49.Kxf2 Kxe4 50.a3 Ke5 51.Nd8 b5 52.Ne6 Bf7 53.Nc7 Bxd5 54.Nxa6 
Bb7 55.Nb8 Ke6 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "1"]
[White "Rivera, Daniel"]
[Black "Navarro, Roberto"]
[Result "1-0"]
[ECO "C78"]
[EventDate "1977.??.??"]
[PlyCount "115"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 Bb7 7.d3 Be7 8.Nbd2 
O-O 9.Re1 d6 10.c3 Na5 11.Bc2 c5 12.Nf1 Re8 13.Ng3 h6 14.h3 Bf8 15.d4 cxd4
16.cxd4 Rc8 17.Bd3 Nc6 18.d5 Nb4 19.Be3 Nd7 20.Bb1 a5 21.a3 Na6 22.Bd3 Nc7
23.b4 Ra8 24.Qe2 Ba6 25.Rec1 axb4 26.axb4 Qb8 27.Rc2 Nb6 28.Bxb6 Qxb6 29.
Rc6 Qb8 30.Rac1 Ra7 31.Nd2 Bc8 32.Nb3 Bd7 33.Na5 Na6 34.Qd2 Be7 35.R6c2 
Bg5 36.Qe1 Bxc1 37.Rxc1 Rc8 38.Rxc8+ Qxc8 39.Nf5 Bxf5 40.exf5 Qc7 41.Nc6 
Kf8 42.f6 Nb8 43.Nxa7 Qxa7 44.fxg7+ Kxg7 45.Qe4 Qa1+ 46.Kh2 Qd4 47.Qh7+ 
Kf6 48.Qxh6+ Ke7 49.Qg5+ Kd7 50.Bxb5+ Kc7 51.Qe7+ Kb6 52.Qxd6+ Kxb5 53.
Qxb8+ Kc4 54.Qc7+ Kxb4 55.d6 Qxf2 56.d7 Qf4+ 57.Kg1 Qd4+ 58.Kh1 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "1"]
[White "Vaca Pereira, Jaime"]
[Black "Masculo, Jose Soares"]
[Result "0-1"]
[ECO "B62"]
[EventDate "1977.??.??"]
[PlyCount "64"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Nxc6 bxc6 8.e5 
dxe5 9.Qf3 Be7 10.Bxf6 gxf6 11.Bb5 O-O 12.O-O Kh8 13.Bxc6 Rb8 14.Rad1 Qa5 
15.Qh5 Ba6 16.Rfe1 Rbd8 17.Rxd8 Qxd8 18.Be4 f5 19.Bd3 Bxd3 20.Re3 Bxc2 21.
Rh3 f4 22.Qxe5+ Bf6 23.Qe2 Bf5 24.Rh5 Qd3 25.Qxd3 Bxd3 26.Rc5 Rd8 27.h3 
Bg6 28.Rc7 Rd2 29.Rxa7 Rxb2 30.Ra8+ Kg7 31.Ra3 Bd4 32.Kh2 Bxf2 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "2"]
[White "Bernat, Miguel"]
[Black "Delgado, Felipe"]
[Result "1-0"]
[ECO "E01"]
[EventDate "1977.??.??"]
[PlyCount "61"]

1.d4 Nf6 2.Nf3 e6 3.c4 d5 4.g3 Nbd7 5.Bg2 c6 6.Qc2 g6 7.O-O Bg7 8.b3 O-O 
9.Bb2 Qc7 10.Nbd2 Re8 11.Rfd1 b6 12.Rac1 Bb7 13.e3 Rac8 14.cxd5 exd5 15.
Ne1 Qd6 16.Nd3 Ng4 17.Nf3 Bh6 18.Re1 Ndf6 19.Nfe5 Qe6 20.Bh3 Nxe3 21.Bxe6 
Nxc2 22.Bxf7+ Kg7 23.Rxc2 Re7 24.Ba3 c5 25.dxc5 Ba6 26.Nb4 Ne4 27.f4 bxc5 
28.Nxa6 Rxe5 29.fxe5 Kxf7 30.e6+ Kxe6 31.Rxc5 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "2"]
[White "Braga, Cicero Nogueira"]
[Black "Clara Melendez, Romeo"]
[Result "1-0"]
[ECO "B50"]
[EventDate "1977.??.??"]
[PlyCount "65"]

1.e4 c5 2.Nf3 d6 3.Nc3 Nf6 4.e5 dxe5 5.Nxe5 a6 6.a4 g6 7.Bc4 e6 8.O-O Bg7 
9.d3 O-O 10.Bg5 Qd6 11.Ng4 Nxg4 12.Qxg4 Nd7 13.Qh4 Qc7 14.Ne4 Re8 15.Be7 
h6 16.Nd6 Rf8 17.Bxf8 Nxf8 18.Ne8 Qe5 19.Nxg7 Kxg7 20.c3 Bd7 21.Rfe1 Qf6 
22.Qxf6+ Kxf6 23.Red1 Rc8 24.a5 e5 25.Bd5 Bc6 26.Bxc6 Rxc6 27.Kf1 Ne6 28.
Ra3 Rc7 29.Rb3 Ke7 30.g3 Kd6 31.Ke2 Kc6 32.Rb6+ Kd7 33.Ke3 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "2"]
[White "Cifuentes, Roberto"]
[Black "Rivera, Daniel"]
[Result "1-0"]
[ECO "A29"]
[EventDate "1977.??.??"]
[PlyCount "83"]

1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bc5 5.Bg2 O-O 6.O-O Re8 7.d3 d6 8.Na4 h6 
9.h3 e4 10.dxe4 Nxe4 11.Nxc5 Nxc5 12.Be3 Ne4 13.Nd4 Nxg3 14.Nxc6 bxc6 15.
Re1 Nf5 16.Bf4 Bd7 17.c5 Qf6 18.Qd2 Nh4 19.cxd6 Nxg2 20.Kxg2 cxd6 21.Rac1 
Re4 22.Bg3 Qe6 23.Qxd6 Qxh3+ 24.Kg1 h5 25.Rcd1 Bf5 26.f3 Re6 27.Qf4 Rae8 
28.Kf2 Bg6 29.e4 Rf6 30.Qh4 Qg4 31.Qxf6 Qxg3+ 32.Kxg3 gxf6 33.Rd6 f5 34.e5
Re6 35.Kf4 Kf8 36.Rxe6 fxe6 37.Kg5 Kg7 38.Rd1 Be8 39.Rd8 Kf7 40.Ra8 Ke7 
41.Rxa7+ Kd8 42.b4 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "2"]
[White "Hernandez, Hugo"]
[Black "Vaca Pereira, Jaime"]
[Result "1-0"]
[ECO "B84"]
[EventDate "1977.??.??"]
[PlyCount "111"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e6 7.Be3 Be7 8.O-O 
O-O 9.Qe1 b5 10.a3 Bb7 11.Bd3 Nbd7 12.Rd1 Nc5 13.Bc1 Nxd3 14.Rxd3 Qc7 15.
Kh1 Rfe8 16.f4 d5 17.e5 Ne4 18.Rff3 Rac8 19.Be3 b4 20.axb4 Bxb4 21.Bd2 
Bxc3 22.Bxc3 Nxc3 23.Qxc3 Qb6 24.Qa3 Rc4 25.c3 Rec8 26.h3 g6 27.Rde3 Qc5 
28.Qxc5 R4xc5 29.Kh2 Bc6 30.Rf2 Bb5 31.Rc2 Rc4 32.Rd2 Bd7 33.Re1 a5 34.Ra1
a4 35.Kg3 Rb8 36.Kf3 h5 37.g3 Kg7 38.h4 Rc7 39.Ke3 Rcb7 40.Ra2 Rc7 41.Nc2 
Rc4 42.Rd4 Rxd4 43.Nxd4 Kf8 44.Kd2 Ke7 45.Kc2 Ra8 46.Ra1 Ra7 47.Kb1 Rb7 
48.Ka2 Rb6 49.Rd1 Bc8 50.Rd2 Bd7 51.Ka3 Kd8 52.Nc2 Rb3+ 53.Ka2 Kc7 54.Rd4 
Rb6 55.Nb4 Bb5 56.Ka3 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "2"]
[White "Masculo, Jose Soares"]
[Black "McCambridge, Vincent"]
[Result "0-1"]
[ECO "A14"]
[EventDate "1977.??.??"]
[PlyCount "88"]

1.Nf3 Nf6 2.g3 b6 3.Bg2 Bb7 4.O-O e6 5.b3 d5 6.Bb2 Be7 7.c4 O-O 8.Nc3 Nbd7
9.cxd5 exd5 10.d4 c5 11.Rc1 Ne4 12.dxc5 Ndxc5 13.Nb5 Qd7 14.Nbd4 Bf6 15.
Rc2 Rfe8 16.Qb1 a5 17.Rfc1 Re7 18.a3 Nd6 19.h4 Rae8 20.Kh2 Qg4 21.Bh3 Qg6 
22.b4 axb4 23.axb4 Na4 24.Ba1 Nc4 25.Qb3 Bxd4 26.Nxd4 b5 27.Nxb5 Nab6 28.
Nd4 Bc8 29.Bxc8 Nxc8 30.Qf3 Re5 31.Ra2 N8d6 32.Ra6 f6 33.Qg2 Rh5 34.b5 h6 
35.Bc3 Re4 36.Nf3 Nxb5 37.Be1 Rxe2 38.g4 Ne3 39.Qg3 Nf1+ 40.Kh3 Nxg3 41.
fxg3 Qe4 42.gxh5 Qf5+ 43.g4 Qxf3+ 44.Bg3 Qg2# 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "2"]
[White "Navarro, Roberto"]
[Black "Ferrao, Luis"]
[Result "1-0"]
[ECO "B89"]
[EventDate "1977.??.??"]
[PlyCount "55"]

1.e4 c5 2.Nc3 Nc6 3.Nf3 d6 4.d4 cxd4 5.Nxd4 e6 6.Be3 Nf6 7.Bc4 a6 8.O-O 
Qc7 9.Bb3 Na5 10.Ba4+ Bd7 11.Bxd7+ Qxd7 12.Qd3 b5 13.b3 Be7 14.Rfd1 Qb7 
15.f3 O-O 16.Nce2 Rac8 17.Bd2 Qb6 18.Kh1 d5 19.exd5 Nxd5 20.Qe4 b4 21.Rac1
Nb7 22.c4 bxc3 23.Nxc3 Nf6 24.Qe3 Nd6 25.Nf5 Qb7 26.Nxe7+ Qxe7 27.Qb6 Qb7 
28.Qxd6 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "3"]
[White "Clara Melendez, Romeo"]
[Black "Masculo, Jose Soares"]
[Result "0-1"]
[ECO "B88"]
[EventDate "1977.??.??"]
[PlyCount "72"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bc4 e6 7.Bb3 Be7 8.O-O 
O-O 9.Be3 a6 10.f4 Nxd4 11.Bxd4 b5 12.a3 Bb7 13.Qe2 a5 14.Nxb5 Nxe4 15.Nc3
Nxc3 16.bxc3 Bf6 17.Qe3 Qe7 18.Rad1 Rfd8 19.Rf2 a4 20.Bc4 Rdc8 21.Bb5 Bc6 
22.Bd3 Rab8 23.Qh3 g6 24.Ba6 Rd8 25.Rd3 e5 26.fxe5 Rb1+ 27.Rf1 Rxf1+ 28.
Kxf1 dxe5 29.Bb6 Rb8 30.Qe3 Qxa3 31.Bc5 Qa1+ 32.Kf2 Qb2 33.Rd6 Qxc2+ 34.
Be2 Qf5+ 35.Kg3 Bg5 36.Bg4 Bf4+ 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "3"]
[White "Delgado, Felipe"]
[Black "Braga, Cicero Nogueira"]
[Result "0-1"]
[ECO "B70"]
[EventDate "1977.??.??"]
[PlyCount "88"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be2 Bg7 7.Bg5 Nc6 8.Nb3 
O-O 9.O-O a6 10.f4 b5 11.Bf3 b4 12.Ne2 Ng4 13.Bxg4 Bxg4 14.h3 Bxe2 15.Qxe2
Bxb2 16.Rad1 Qb6+ 17.Kh1 Qb5 18.Qg4 Bg7 19.Rfe1 Rac8 20.Rd5 Qc4 21.Qd1 Rc7
22.Re2 Ra8 23.e5 h6 24.exd6 exd6 25.Bh4 Qxf4 26.Bf2 Be5 27.Bg1 Qc4 28.Rd3 
Ne7 29.Nd2 Qxc2 30.Nf3 Qxd1 31.Rxd1 Nf5 32.Bh2 Ng3+ 33.Bxg3 Bxg3 34.Nd4 
Rac8 35.Red2 Rc1 36.Ne2 Rxd1+ 37.Rxd1 Be5 38.Rc1 Rxc1+ 39.Nxc1 a5 40.Kg1 
a4 41.Kf1 Bf4 42.Nd3 Bd2 43.Ke2 b3 44.axb3 a3 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "3"]
[White "Ferrao, Luis"]
[Black "Cifuentes, Roberto"]
[Result "0-1"]
[ECO "B40"]
[EventDate "1977.??.??"]
[PlyCount "98"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Bb4 6.e5 Nd5 7.Qg4 g5 8.Bd2 
Bxc3 9.bxc3 h5 10.Qe4 d6 11.Bb5+ Kf8 12.c4 dxe5 13.cxd5 exd4 14.Qxd4 Rh6 
15.Bb4+ Kg8 16.Bc3 f6 17.d6 Nc6 18.Bxc6 bxc6 19.O-O Ba6 20.Rfd1 Qd7 21.
Rab1 Rd8 22.Ba5 Ra8 23.Bc7 Kg7 24.Rb8 e5 25.Qa4 Bb5 26.Qb3 Rxb8 27.Bxb8 
Rh8 28.Bc7 c5 29.Qe3 Bc6 30.Re1 Qg4 31.f3 Qd4 32.Qxd4 cxd4 33.Kf2 Kf7 34.
Rb1 Ke6 35.Ke2 g4 36.Kf2 Rg8 37.Rb8 Rxb8 38.Bxb8 gxf3 39.gxf3 a5 40.Bc7 
Ba4 41.a3 Bxc2 42.f4 Ba4 43.Ke2 Bb5+ 44.Kd2 e4 45.Bb6 Kd5 46.Bd8 e3+ 47.
Ke1 f5 48.Bxa5 Ke4 49.Bc7 d3 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "3"]
[White "McCambridge, Vincent"]
[Black "Hernandez, Hugo"]
[Result "1-0"]
[ECO "E74"]
[EventDate "1977.??.??"]
[PlyCount "91"]

1.d4 Nf6 2.c4 c5 3.d5 g6 4.Nc3 d6 5.e4 Bg7 6.Be2 O-O 7.Bg5 Re8 8.Qd2 Na6 
9.Nf3 Bg4 10.O-O Rb8 11.h3 Bxf3 12.Bxf3 Nc7 13.Be2 a6 14.a4 e6 15.Bd3 Qd7 
16.a5 b5 17.axb6 Rxb6 18.f4 exd5 19.exd5 Reb8 20.Rab1 h6 21.Bh4 Nce8 22.
Rfe1 Qb7 23.Bc2 Rxb2 24.Rxb2 Qxb2 25.Rb1 Nh5 26.Rxb2 Rxb2 27.Ne2 a5 28.Qd1
Ra2 29.Ba4 Nc7 30.Bd8 Na6 31.g4 Nxf4 32.Nxf4 Ra1 33.Qxa1 Bxa1 34.Bxa5 Kg7 
35.Nd3 Bd4+ 36.Kg2 Kf6 37.Bd8+ Kg7 38.Be7 f5 39.gxf5 gxf5 40.Bxd6 Kf7 41.
Bb5 Nb4 42.Nxb4 cxb4 43.Bxb4 Be5 44.Kf3 h5 45.c5 Ke7 46.c6+ 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "3"]
[White "Rivera, Daniel"]
[Black "Bernat, Miguel"]
[Result "0-1"]
[ECO "C03"]
[EventDate "1977.??.??"]
[PlyCount "58"]

1.e4 e6 2.d4 d5 3.Nd2 a6 4.e5 c5 5.c3 Nc6 6.Ndf3 Qa5 7.dxc5 Qc7 8.Bf4 Bxc5
9.Bd3 Nge7 10.Bg3 Bd7 11.Ne2 Ng6 12.Bxg6 hxg6 13.O-O Ne7 14.Ned4 Nf5 15.
Qd2 Qb6 16.Rfe1 Rc8 17.Nxf5 gxf5 18.Qg5 Kf8 19.Bh4 Kg8 20.Rad1 Bf8 21.Qg3 
Rc4 22.h3 Qxb2 23.Rb1 Qxc3 24.Qg5 Bc6 25.Qd8 Qa3 26.Qc7 Rhxh4 27.Nxh4 Rxh4
28.Rec1 Rc4 29.Re1 Qe7 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "3"]
[White "Vaca Pereira, Jaime"]
[Black "Navarro, Roberto"]
[Result "1-0"]
[ECO "C54"]
[EventDate "1977.??.??"]
[PlyCount "61"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Nc3 Nxe4 8.
O-O Bxc3 9.d5 Bf6 10.Re1 Ne7 11.Rxe4 d6 12.Bg5 Bxg5 13.Nxg5 f6 14.Ne6 Bxe6
15.Rxe6 O-O 16.f4 f5 17.Qd4 Ng6 18.Rae1 a6 19.Be2 Qd7 20.Bd3 Rf7 21.Qb4 
Raf8 22.g3 Qc8 23.h4 Rd8 24.h5 Nf8 25.R6e3 Nd7 26.h6 Nf6 27.Qd4 Ng4 28.
Bxf5 Nxe3 29.Bxc8 Nc2 30.Qa7 Rxc8 31.Rc1 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "4"]
[White "Bernat, Miguel"]
[Black "Braga, Cicero Nogueira"]
[Result "0-1"]
[ECO "E60"]
[EventDate "1977.??.??"]
[PlyCount "83"]

1.Nf3 Nf6 2.g3 g6 3.b3 Bg7 4.Bb2 O-O 5.Bg2 c5 6.c4 Nc6 7.O-O d6 8.d4 cxd4 
9.Nxd4 Bd7 10.Nc3 Qa5 11.e3 Rfc8 12.Qe2 Bg4 13.f3 Bd7 14.Rfd1 Rab8 15.Rac1
a6 16.a3 Qb6 17.Na4 Qd8 18.c5 Nxd4 19.Bxd4 Bxa4 20.bxa4 Ne8 21.Bxg7 Kxg7 
22.Qd2 Kg8 23.f4 Qd7 24.Qd4 Qg4 25.Re1 dxc5 26.Rxc5 Nd6 27.Rec1 h5 28.Kf2 
Rxc5 29.Rxc5 Rc8 30.h3 Qd7 31.a5 Rxc5 32.Qxc5 Qxh3 33.Qc7 Qe6 34.Bxb7 Qa2+
35.Kf3 Qb1 36.Bxa6 Qd1+ 37.Kg2 Qd2+ 38.Kf3 Qd1+ 39.Kg2 Qd5+ 40.Kg1 Qf3 41.
Qb8+ Kh7 42.Qb3 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "4"]
[White "Cifuentes, Roberto"]
[Black "Vaca Pereira, Jaime"]
[Result "0-1"]
[ECO "A29"]
[EventDate "1977.??.??"]
[PlyCount "70"]

1.c4 e5 2.Nc3 Nf6 3.Nf3 Nc6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Be6 7.d3 Be7 8.Bd2 
O-O 9.O-O Qd7 10.Ng5 Bxg5 11.Bxg5 Nxc3 12.bxc3 Bh3 13.Rb1 Bxg2 14.Kxg2 
Qd5+ 15.e4 Qxa2 16.Rxb7 Rfc8 17.Rb5 h6 18.Be3 a5 19.d4 exd4 20.cxd4 a4 21.
Qb1 Qxb1 22.Rfxb1 a3 23.Ra1 Ra4 24.d5 Ne5 25.Rc5 Nd7 26.Rc3 a2 27.Rc2 Rxe4
28.Raxa2 Re5 29.d6 c5 30.Ra7 Rd8 31.Rd2 Nf6 32.Rb2 Rd5 33.Rbb7 R5xd6 34.
Rxf7 R8d7 35.Bxc5 Kxf7 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "4"]
[White "Hernandez, Hugo"]
[Black "Clara Melendez, Romeo"]
[Result "1-0"]
[ECO "B00"]
[EventDate "1977.??.??"]
[PlyCount "13"]

1.e4 Nc6 2.d4 d5 3.exd5 Qxd5 4.Nf3 Bg4 5.Be2 Bxf3 6.Bxf3 Qxd4 7.Bxc6+ 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "4"]
[White "Masculo, Jose Soares"]
[Black "Delgado, Felipe"]
[Result "1-0"]
[ECO "A16"]
[EventDate "1977.??.??"]
[PlyCount "71"]

1.g3 g6 2.Bg2 Bg7 3.c4 Nf6 4.Nc3 c6 5.e4 d6 6.Nge2 e5 7.O-O O-O 8.d3 Be6 
9.h3 Ne8 10.Be3 f5 11.Qd2 Qd7 12.Kh2 Qf7 13.f4 Nd7 14.Rf2 Nef6 15.Raf1 
fxe4 16.Nxe4 Nxe4 17.Bxe4 Qe7 18.Nc3 Bh6 19.Bg2 exf4 20.Bxf4 Bxf4 21.Rxf4 
Rxf4 22.Rxf4 Rf8 23.Rxf8+ Qxf8 24.Qe3 Qf7 25.Qxa7 Nf6 26.Qb8+ Kg7 27.Qxd6 
h5 28.Qf4 Qd7 29.Ne4 Nxe4 30.Bxe4 Bxh3 31.Qg5 Bg4 32.Bxg6 Qd4 33.Bxh5+ Kf8
34.Qxg4 Qxb2+ 35.Qe2 Qf6 36.Qf3 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "4"]
[White "Navarro, Roberto"]
[Black "McCambridge, Vincent"]
[Result "1-0"]
[ECO "B08"]
[EventDate "1977.??.??"]
[PlyCount "91"]

1.d4 Nf6 2.Nc3 g6 3.e4 d6 4.Nf3 Bg7 5.Bg5 c6 6.Qd2 b5 7.Bd3 Nbd7 8.O-O O-O
9.a3 a6 10.Qf4 c5 11.dxc5 Nxc5 12.Be2 Bb7 13.Qh4 Rc8 14.Nd4 Qb6 15.Be3 Qc7
16.f3 Rfd8 17.Qf2 Rd7 18.Rac1 Ba8 19.Rfd1 Qb8 20.b4 Ne6 21.Nb1 Rdc7 22.Bd3
Nd7 23.Nd2 Nxd4 24.Bxd4 Ne5 25.Nb3 Bc6 26.Bb6 Rb7 27.Be3 Bd7 28.Nd4 Rbc7 
29.Qd2 Rc3 30.Ra1 Nc4 31.Bxc4 R8xc4 32.Qf2 d5 33.Ne2 Rxc2 34.Rac1 Rxc1 35.
Bxc1 d4 36.Nf4 Rxc1 37.Rxc1 Qxf4 38.Rd1 Be6 39.g3 Qc7 40.f4 Qc3 41.e5 d3 
42.Qc5 Qc2 43.Rc1 Qe2 44.Qf2 d2 45.Rc8+ Bxc8 46.Qxe2 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "4"]
[White "Rivera, Daniel"]
[Black "Ferrao, Luis"]
[Result "1-0"]
[ECO "B23"]
[EventDate "1977.??.??"]
[PlyCount "83"]

1.e4 c5 2.Nc3 d6 3.f4 Nc6 4.Nf3 g6 5.Bc4 Bg7 6.O-O e6 7.f5 exf5 8.d3 Nge7 
9.Qe1 O-O 10.Qh4 a6 11.a4 Qc7 12.Bh6 Ne5 13.Ng5 Bf6 14.Bxf8 Bxg5 15.Qxg5 
Kxf8 16.Qf6 Kg8 17.Bd5 N7c6 18.h3 Qe7 19.Qxe7 Nxe7 20.Rf2 Rb8 21.exf5 Bxf5
22.g4 Bd7 23.Rf6 Nxd5 24.Nxd5 Be6 25.Nc3 Kg7 26.Rf2 f5 27.gxf5 Bxf5 28.Kh2
b6 29.Ne4 Rd8 30.Re1 h6 31.Nxd6 Rxd6 32.Rxe5 Rd4 33.Re7+ Kf6 34.Rb7 Rxa4 
35.Rxb6+ Kg5 36.Rg2+ Kh5 37.b3 Rh4 38.Rg3 g5 39.Rxa6 g4 40.Ra5 Rxh3+ 41.
Rxh3+ gxh3 42.Rxc5 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "5"]
[White "Braga, Cicero Nogueira"]
[Black "Masculo, Jose Soares"]
[Result "1/2-1/2"]
[ECO "A04"]
[EventDate "1977.??.??"]
[PlyCount "81"]

1.Nf3 c5 2.g3 g6 3.Bg2 Bg7 4.O-O e6 5.d4 cxd4 6.Nxd4 Ne7 7.c4 O-O 8.Nc3 d5
9.cxd5 exd5 10.Be3 Nbc6 11.Qd2 Be6 12.Rfd1 Qd7 13.Nxc6 bxc6 14.Bd4 Bxd4 
15.Qxd4 Qb7 16.b3 Rac8 17.Na4 Nf5 18.Qc5 Qe7 19.Qxe7 Nxe7 20.Rac1 Rb8 21.
Nc5 Rfd8 22.Rd4 Rb5 23.Ra4 a5 24.e3 Ra8 25.Bf1 Rb6 26.Nxe6 fxe6 27.Rc5 e5 
28.Rcxa5 Rxa5 29.Rxa5 e4 30.Ra7 Kf8 31.f3 exf3 32.Kf2 Rb4 33.Kxf3 h5 34.
Bd3 g5 35.Bc2 g4+ 36.Ke2 Kf7 37.a3 Rb8 38.Kd3 Ke6 39.b4 Rf8 40.Ke2 Rh8 41.
Rb7 1/2-1/2

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "5"]
[White "Clara Melendez, Romeo"]
[Black "Navarro, Roberto"]
[Result "0-1"]
[ECO "C32"]
[EventDate "1977.??.??"]
[PlyCount "56"]

1.e4 e5 2.f4 d5 3.exd5 e4 4.d3 Nf6 5.Nd2 exd3 6.Bxd3 Nxd5 7.Qe2+ Qe7 8.Ne4
Nb4 9.Be3 Nxd3+ 10.Qxd3 Bf5 11.Qb5+ Bd7 12.Qxb7 Bc6 13.Qc8+ Qd8 14.Qf5 Qd7
15.Nf6+ gxf6 16.Qxf6 Rg8 17.Nf3 Bg7 18.Qh4 Bxb2 19.Rb1 Bc3+ 20.Kf2 Qg4 21.
Qxg4 Rxg4 22.Rb3 Bf6 23.Re1 Kf8 24.Bc5+ Kg7 25.h3 Rxf4 26.Kg3 Rc4 27.Be7 
Nd7 28.Bxf6+ Nxf6 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "5"]
[White "Delgado, Felipe"]
[Black "Hernandez, Hugo"]
[Result "1/2-1/2"]
[ECO "B23"]
[EventDate "1977.??.??"]
[PlyCount "117"]

1.e4 c5 2.Nc3 d6 3.f4 Nf6 4.Bc4 Nc6 5.Nf3 Bg4 6.O-O Nd4 7.Be2 Nxe2+ 8.Qxe2
g6 9.h3 Bxf3 10.Qxf3 Bg7 11.Kh1 Nd7 12.d3 O-O 13.Bd2 Rb8 14.a4 a6 15.a5 e6
16.Qg3 f5 17.Qe1 Re8 18.Na4 d5 19.e5 Rc8 20.c4 dxc4 21.dxc4 Nb8 22.Be3 Bf8
23.Nb6 Rc7 24.Rd1 Qe7 25.Qf2 Nc6 26.Rd6 Qg7 27.Bxc5 Nxa5 28.b4 Nc6 29.Rfd1
Bxd6 30.exd6 Rd7 31.Nxd7 Qxd7 32.Qb2 b5 33.cxb5 axb5 34.Qe2 Rb8 35.Re1 Kf7
36.Ra1 Qb7 37.Qd3 Rd8 38.Qa3 h6 39.Qa6 Rd7 40.Qa3 g5 41.Qg3 Kg6 42.Re1 Nd8
43.fxg5 hxg5 44.h4 Kh7 45.Qxg5 Rg7 46.Qh5+ Kg8 47.Re2 Qd5 48.Qe8+ Kh7 49.
Qxb5 Nf7 50.Qa6 Rg4 51.Qa1 Nxd6 52.Bxd6 Qxd6 53.Qe1 Qxb4 54.Qxb4 Rxb4 55.
Rxe6 Rxh4+ 56.Kg1 Kg7 57.Kf2 Rb4 58.Kf3 Kf7 59.Ra6 1/2-1/2

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "5"]
[White "Ferrao, Luis"]
[Black "Bernat, Miguel"]
[Result "0-1"]
[ECO "C08"]
[EventDate "1977.??.??"]
[PlyCount "78"]

1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5 5.Ngf3 a6 6.dxc5 Bxc5 7.Nb3 Ba7 8.c3 
Nf6 9.Be2 O-O 10.O-O Qd6 11.Nfd4 Nc6 12.Bf3 Re8 13.Re1 Bd7 14.g3 Rxe1+ 15.
Qxe1 Re8 16.Qd1 Ne5 17.Bg2 Bg4 18.Qf1 Nc4 19.Bf4 Qd7 20.Qc1 Bh3 21.Nd2 h6 
22.Nxc4 dxc4 23.Bxh3 Qxh3 24.Qf1 Qxf1+ 25.Kxf1 Bxd4 26.cxd4 Nd5 27.Bd2 Re4
28.Bc3 f5 29.Re1 Rxe1+ 30.Kxe1 Kf7 31.Ke2 Ke6 32.a3 g5 33.h3 h5 34.Bd2 g4 
35.hxg4 hxg4 36.Kd1 Ne7 37.Kc2 Kd5 38.Kc3 Nc6 39.Be3 b5 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "5"]
[White "McCambridge, Vincent"]
[Black "Cifuentes, Roberto"]
[Result "1-0"]
[ECO "D32"]
[EventDate "1977.??.??"]
[PlyCount "99"]

1.c4 c5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3 e6 5.d4 d5 6.cxd5 exd5 7.Bb5 Bd6 8.O-O 
O-O 9.dxc5 Bxc5 10.b3 Bg4 11.h3 Bh5 12.Bb2 Rc8 13.Rc1 Bd6 14.Be2 a6 15.Nd4
Bg6 16.Nxc6 Rxc6 17.Qd4 Bc7 18.Bf3 Qd6 19.g3 Bb6 20.Qf4 Qe6 21.Na4 Bc7 22.
Rxc6 Qxc6 23.Qd4 b5 24.Rc1 Qd6 25.Nc5 Bb6 26.b4 Qe7 27.Qh4 Rc8 28.Bd4 a5 
29.a3 axb4 30.axb4 Ra8 31.Bxf6 Qxf6 32.Qxf6 gxf6 33.Bxd5 Rd8 34.Bc6 Rd2 
35.Bxb5 Rb2 36.Na6 Kg7 37.Bf1 Bf5 38.g4 Be6 39.Rc6 Rb1 40.Rxb6 Bc4 41.Nc5 
Rxf1+ 42.Kg2 Rb1 43.Nd7 Be6 44.Nc5 Bc4 45.f3 Rb2+ 46.Kg3 Bf1 47.Ne4 Rg2+ 
48.Kf4 Rh2 49.Ng3 Bd3 50.e4 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "5"]
[White "Vaca Pereira, Jaime"]
[Black "Rivera, Daniel"]
[Result "0-1"]
[ECO "B03"]
[EventDate "1977.??.??"]
[PlyCount "74"]

1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.d4 d6 5.f4 dxe5 6.fxe5 Nc6 7.Nf3 Bf5 8.a3 e6 
9.Nc3 Be7 10.Be3 Bg4 11.Be2 Bxf3 12.Bxf3 Nxc4 13.Bxc6+ bxc6 14.Qe2 Nxe3 
15.Qxe3 Bh4+ 16.g3 Bg5 17.Qe4 O-O 18.Rd1 Qb8 19.b4 a5 20.Rb1 axb4 21.Rxb4 
Qa7 22.a4 c5 23.dxc5 Qxc5 24.Rc4 Qb6 25.h4 Be3 26.Ke2 Bg1 27.Nd1 Rad8 28.
Ne3 Bxe3 29.Qxe3 Qb2+ 30.Kf3 Rd5 31.Qc3 Qb7 32.Kg4 h5+ 33.Kxh5 f6 34.Rxc7 
Rxe5+ 35.Qxe5 Qf3+ 36.Kg6 Qd3+ 37.Kh5 fxe5 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "6"]
[White "Bernat, Miguel"]
[Black "Masculo, Jose Soares"]
[Result "1/2-1/2"]
[ECO "A57"]
[EventDate "1977.??.??"]
[PlyCount "46"]

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.e3 g6 6.Nc3 d6 7.Nf3 Bg7 8.a4 O-O 9.
Ra3 Nbd7 10.Qb3 Ne8 11.Be2 axb5 12.axb5 Rb8 13.O-O Nc7 14.e4 Nb6 15.Bf4 
Bg4 16.h3 Bxf3 17.Bxf3 e6 18.Rd1 exd5 19.exd5 f5 20.Re1 Qd7 21.Ra7 Nc8 22.
Ra5 Re8 23.Re2 Bd4 1/2-1/2

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "6"]
[White "Cifuentes, Roberto"]
[Black "Clara Melendez, Romeo"]
[Result "1-0"]
[ECO "B92"]
[EventDate "1977.??.??"]
[PlyCount "89"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nb3 Be7 8.f4 O-O
9.g4 Ne8 10.O-O Nc7 11.Be3 b5 12.Qd2 Qd7 13.Rad1 b4 14.Nd5 Nxd5 15.Qxd5 
Bb7 16.Qd3 Qc7 17.f5 Rc8 18.c4 Nd7 19.Kh1 Nc5 20.Bxc5 dxc5 21.Bf3 Rd8 22.
Qe3 h6 23.f6 gxf6 24.Qxh6 Qb6 25.g5 Bf8 26.Qxf6 Qxf6 27.gxf6 Rac8 28.Kg1 
Bc6 29.Na5 Ba8 30.Nb3 Bc6 31.Kf2 Ba4 32.Rg1+ Kh8 33.Rd5 Rxd5 34.exd5 Bxb3 
35.axb3 Bd6 36.Rg7 Rc7 37.Bh5 Bf8 38.Rxf7 Rxf7 39.Bxf7 Kh7 40.Kf3 a5 41.h4
Bd6 42.Ke4 Kh6 43.Kf5 Kh7 44.Bg6+ Kh6 45.Be8 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "6"]
[White "Ferrao, Luis"]
[Black "Vaca Pereira, Jaime"]
[Result "1-0"]
[ECO "B84"]
[EventDate "1977.??.??"]
[PlyCount "49"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Be2 e6 7.O-O Be7 8.Be3 
a6 9.f4 Qc7 10.Qe1 b5 11.Nxc6 Qxc6 12.Bf3 e5 13.Qg3 h5 14.Nd5 Ng4 15.Bxg4 
hxg4 16.Nxe7 Kxe7 17.fxe5 dxe5 18.Qxe5+ Kf8 19.Qg5 Be6 20.Bd4 Rh7 21.Qg6 
Qd6 22.Rxf7+ Bxf7 23.Qxd6+ Kg8 24.Rf1 Rh6 25.Qe7 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "6"]
[White "Hernandez, Hugo"]
[Black "Braga, Cicero Nogueira"]
[Result "0-1"]
[ECO "B78"]
[EventDate "1977.??.??"]
[PlyCount "88"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 Nc6 8.Qd2 
O-O 9.Bc4 Bd7 10.h4 Ne5 11.Bb3 h5 12.O-O-O Rc8 13.Kb1 Nc4 14.Bxc4 Rxc4 15.
Nde2 b5 16.Nf4 b4 17.Ncd5 Nxd5 18.Nxd5 Be6 19.Bh6 Bxd5 20.Bxg7 Kxg7 21.
Qxd5 Qc7 22.Rd2 Rc8 23.Qd3 Qc5 24.Rf1 Qe5 25.Rff2 a5 26.b3 Rc3 27.Qd5 R8c5
28.Qxe5+ Rxe5 29.Rd3 Rec5 30.Rfd2 Kf6 31.Rd5 Rxd5 32.Rxd5 Rc5 33.Rd3 Ke5 
34.g3 f6 35.c4 g5 36.hxg5 fxg5 37.Rd2 h4 38.gxh4 gxh4 39.Rh2 Kf4 40.Rh3 
Rh5 41.a3 Ke3 42.axb4 axb4 43.Kc2 Kf2 44.f4 Kg2 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "6"]
[White "Navarro, Roberto"]
[Black "Delgado, Felipe"]
[Result "1-0"]
[ECO "B13"]
[EventDate "1977.??.??"]
[PlyCount "89"]

1.e4 c6 2.d4 d5 3.exd5 cxd5 4.Bd3 Nc6 5.c3 Nf6 6.Bf4 Bg4 7.Qb3 Na5 8.Qa4+ 
Bd7 9.Qc2 Qb6 10.a4 e6 11.Nd2 Rc8 12.Ngf3 Nc6 13.Qb1 a5 14.O-O g6 15.Ne5 
Nxe5 16.dxe5 Nh5 17.Be3 Qc7 18.Nf3 Be7 19.Bh6 Rg8 20.Re1 Bf8 21.Qc1 Qc5 
22.Nd4 Bxh6 23.Qxh6 Qf8 24.Qe3 Ng7 25.Nb5 Rc6 26.Qa7 Qc5 27.Qxa5 Bc8 28.b4
Qe7 29.Rac1 Nf5 30.Nd4 Rc7 31.Nf3 Kf8 32.c4 dxc4 33.Rxc4 Rxc4 34.Bxc4 Kg7 
35.Rd1 Bd7 36.Nd4 Qh4 37.g3 Qe7 38.Nxf5+ gxf5 39.Qc7 Rc8 40.Qxd7 Qxd7 41.
Rxd7 Rxc4 42.Rxb7 Rc1+ 43.Kg2 Ra1 44.a5 Ra3 45.Rb6 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "6"]
[White "Rivera, Daniel"]
[Black "McCambridge, Vincent"]
[Result "0-1"]
[ECO "B94"]
[EventDate "1977.??.??"]
[PlyCount "72"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 Nbd7 7.Bc4 Qa5 8.Qd2 
e6 9.Bb3 b5 10.f3 Bb7 11.O-O Be7 12.Rfe1 b4 13.Nd1 Nxe4 14.fxe4 Bxg5 15.
Ne3 Nc5 16.Qe2 Nxe4 17.Rad1 O-O 18.Qg4 Nf6 19.Qg3 Qe5 20.Qh3 Bxe3+ 21.Rxe3
Qh5 22.Qxh5 Nxh5 23.Nxe6 fxe6 24.Rxe6 Kh8 25.Re7 Bc6 26.Rxd6 Bb5 27.h3 Ng3
28.Rb7 h5 29.Kh2 Nf5 30.Rg6 Kh7 31.Rg5 Kh6 32.h4 Rf6 33.Bd5 Rd8 34.Be4 Nd6
35.Rgxg7 Nxe4 36.Rh7+ Kg6 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "7"]
[White "Braga, Cicero Nogueira"]
[Black "Navarro, Roberto"]
[Result "1/2-1/2"]
[ECO "A08"]
[EventDate "1977.??.??"]
[PlyCount "112"]

1.Nf3 Nf6 2.g3 e6 3.Bg2 d5 4.O-O c5 5.d3 Be7 6.Nbd2 Nc6 7.e4 O-O 8.Qe2 Qc7
9.Re1 dxe4 10.dxe4 e5 11.c3 Bg4 12.Nc4 Be6 13.Bg5 Rfd8 14.Bxf6 Bxf6 15.Ne3
Rd7 16.Qf1 Qb6 17.Reb1 Ne7 18.Bh3 Qc6 19.Bxe6 fxe6 20.Qh3 Rad8 21.Qg4 h5 
22.Qxh5 Qxe4 23.Qg4 Qxg4 24.Nxg4 e4 25.Nfe5 Rd5 26.Nc4 b5 27.Na3 b4 28.
cxb4 cxb4 29.Nc4 Rd4 30.Nge3 Nf5 31.Rc1 Rd3 32.Rab1 Bg5 33.Re1 Nd4 34.Kg2 
Nf3 35.Re2 Bxe3 36.fxe3 Rd1 37.Rxd1 Rxd1 38.Rf2 g5 39.Kh3 Kg7 40.Kg4 Kg6 
41.h4 gxh4 42.gxh4 e5 43.Rc2 Kf6 44.Na5 Rg1+ 45.Kh3 Rh1+ 46.Kg3 Nxh4 47.
Kg4 Ke6 48.Nc6 Nf3 49.Kg3 Ra1 50.Nxb4 a5 51.Na6 Rxa2 52.Nc7+ Kf5 53.Nb5 a4
54.Rf2 Ke6 55.Nc3 Ra1 56.Nxe4 Ne1 1/2-1/2

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "7"]
[White "Clara Melendez, Romeo"]
[Black "Rivera, Daniel"]
[Result "0-1"]
[ECO "B09"]
[EventDate "1977.??.??"]
[PlyCount "68"]

1.e4 Nf6 2.Nc3 d6 3.d4 g6 4.f4 Bg7 5.Bd3 O-O 6.Nf3 Nc6 7.O-O Bg4 8.Be3 e5 
9.dxe5 dxe5 10.h3 exf4 11.Bxf4 Nh5 12.Bh2 Bxf3 13.Qxf3 Qd4+ 14.Kh1 Ne5 15.
Qf2 Nxd3 16.cxd3 c6 17.Qxd4 Bxd4 18.Ne2 Rad8 19.g4 Ng7 20.Rfd1 Ne6 21.Nxd4
Rxd4 22.Be5 Rd7 23.Rac1 f6 24.Bc3 Nf4 25.Kh2 Rxd3 26.Rxd3 Nxd3 27.Rd1 Ne5 
28.Bxe5 fxe5 29.Kg2 Rf7 30.Rd8+ Kg7 31.Re8 Kf6 32.h4 Re7 33.g5+ Ke6 34.Rf8
Rd7 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "7"]
[White "Delgado, Felipe"]
[Black "Cifuentes, Roberto"]
[Result "0-1"]
[ECO "B74"]
[EventDate "1977.??.??"]
[PlyCount "70"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be2 Bg7 7.Be3 Nc6 8.Nb3 
Be6 9.O-O O-O 10.f4 Qc8 11.h3 Rd8 12.Bf3 Bc4 13.Ne2 e5 14.c3 d5 15.Qc2 
dxe4 16.Bg4 Nxg4 17.hxg4 Qxg4 18.Rae1 Bd3 19.Qd1 Rd5 20.fxe5 Nxe5 21.Rf4 
Qh5 22.Ned4 Qxd1 23.Rxd1 Bh6 24.Rc1 Nc4 25.Kf2 Nxe3 26.Kxe3 Rc8 27.g4 a5 
28.Rh1 Bg5 29.Nd2 Re5 30.Rh2 b5 31.a3 b4 32.axb4 axb4 33.c4 Bxc4 34.Nxc4 
Rxc4 35.Rf2 Rd5 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "7"]
[White "Masculo, Jose Soares"]
[Black "Hernandez, Hugo"]
[Result "1-0"]
[ECO "A04"]
[EventDate "1977.??.??"]
[PlyCount "95"]

1.Nf3 g6 2.g3 Bg7 3.Bg2 c6 4.d4 Nf6 5.O-O O-O 6.b3 d6 7.Bb2 Nbd7 8.Nbd2 
Re8 9.e4 e5 10.dxe5 Nxe5 11.Nxe5 dxe5 12.Nc4 Bg4 13.f3 b5 14.Qxd8 Raxd8 
15.Nxe5 Bd7 16.Nd3 Bc8 17.a4 a6 18.h4 h5 19.Kh2 c5 20.Rad1 c4 21.bxc4 bxc4
22.Ne5 Be6 23.Ba1 c3 24.Bxc3 Rc8 25.Rd3 Nd7 26.Nxd7 Bxc3 27.Bh3 Bg7 28.Rf2
Bc4 29.Rd6 Rc7 30.Rfd2 Bc3 31.Nf6+ Bxf6 32.Rxf6 Rb8 33.Bd7 Rb2 34.Rc6 Rxc6
35.Bxc6 Bb3 36.Kg1 Kg7 37.Kf2 Ra2 38.Bd5 Bxd5 39.exd5 Kf8 40.Ke3 Rxa4 41.
Rd4 Ra1 42.Re4 a5 43.Kd4 Rb1 44.Re3 Rb4+ 45.c4 a4 46.d6 Rb8 47.c5 Ra8 48.
c6 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "7"]
[White "McCambridge, Vincent"]
[Black "Ferrao, Luis"]
[Result "1-0"]
[ECO "A56"]
[EventDate "1977.??.??"]
[PlyCount "111"]

1.c4 Nf6 2.d4 c5 3.e3 g6 4.Nc3 Bg7 5.Nf3 O-O 6.Be2 cxd4 7.exd4 d5 8.O-O 
Nc6 9.h3 b6 10.Re1 Bb7 11.Bg5 dxc4 12.Bxc4 Na5 13.Bd3 h6 14.Bh4 e6 15.Ne4 
Nc6 16.Ne5 Nxd4 17.Nxf6+ Bxf6 18.Bxf6 Qxf6 19.Nd7 Qg5 20.Be4 Bxe4 21.Rxe4 
Nf5 22.Nxf8 Rxf8 23.Qg4 Qf6 24.Qe2 Nd4 25.Qd2 Rd8 26.Qxh6 Nc2 27.Rc1 Nd4 
28.Rc3 b5 29.Qe3 Nf5 30.Qf4 Rd1+ 31.Kh2 Qd8 32.Qe5 Rd2 33.Rf3 Rd5 34.Qc3 
Qd6+ 35.g3 Qd7 36.Qf6 a5 37.Rff4 Ng7 38.g4 Qc7 39.Kg2 Ne8 40.Qc3 Rc5 41.
Qe3 Qc6 42.Qf3 Qc7 43.Re2 g5 44.Rd4 Kg7 45.Red2 Nf6 46.h4 gxh4 47.Kh3 Nh7 
48.Kxh4 Qh2+ 49.Qh3 Qe5 50.Qg3 Qf6+ 51.Kh3 Ng5+ 52.Kg2 e5 53.Rd5 Ne4 54.
Qe3 Nxd2 55.Rxc5 Nc4 56.Qe4 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "7"]
[White "Vaca Pereira, Jaime"]
[Black "Bernat, Miguel"]
[Result "0-1"]
[ECO "A53"]
[EventDate "1977.??.??"]
[PlyCount "96"]

1.d4 Nf6 2.c4 d6 3.Nc3 Nbd7 4.e4 e5 5.d5 Be7 6.Bd3 O-O 7.Nge2 Ne8 8.O-O 
Bg5 9.f4 exf4 10.Bxf4 Ne5 11.Bxe5 dxe5 12.Kh1 Nf6 13.Qe1 Qe7 14.a3 a5 15.
Nd1 Bd7 16.Nec3 Nh5 17.Ne2 Ra6 18.c5 Rh6 19.b4 Ra8 20.Bc4 Nf6 21.Nf2 Be3 
22.h3 Bxf2 23.Qxf2 Nxe4 24.Qe3 Nf6 25.Rad1 Rh4 26.d6 cxd6 27.cxd6 Qd8 28.
Bd5 Nxd5 29.Rxd5 Be6 30.Rdd1 Qd7 31.Kh2 axb4 32.axb4 Rxb4 33.Qxe5 Ra6 34.
Nf4 Rb5 35.Qd4 Bb3 36.Rc1 Rxd6 37.Qa7 Re5 38.Rb1 Ra6 39.Qf2 Ba4 40.Qb2 Rb5
41.Qf2 Rxb1 42.Rxb1 Bc6 43.Re1 h6 44.Qc5 Qd2 45.Rf1 Ra5 46.Qf2 Ra2 47.Ne2 
Qd6+ 48.Kh1 Qe6 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "8"]
[White "Bernat, Miguel"]
[Black "Hernandez, Hugo"]
[Result "1-0"]
[ECO "D91"]
[EventDate "1977.??.??"]
[PlyCount "121"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bg5 Ne4 6.Bh4 Nxc3 7.bxc3 O-O 8.cxd5
Qxd5 9.e3 Nc6 10.Be2 Re8 11.O-O b6 12.Bg3 Qd8 13.Qa4 Bd7 14.Bb5 Nb8 15.Ne5
Bxb5 16.Qxb5 e6 17.a4 a6 18.Qc4 f6 19.Nc6 Nxc6 20.Qxc6 Rc8 21.a5 Re7 22.
Rfb1 Qd7 23.Qxd7 Rxd7 24.axb6 cxb6 25.Rxb6 Rxc3 26.Rxe6 Ra7 27.h3 a5 28.
Ra4 Kf7 29.Rb6 Bf8 30.Rb5 Ra3 31.Rxa3 Bxa3 32.Kf1 Bf8 33.Ke2 a4 34.Rb2 Ke6
35.e4 a3 36.Ra2 Rb7 37.Kd3 Kd7 38.d5 Bc5 39.f3 Rb3+ 40.Kc2 Rb6 41.Be1 Be7 
42.Bc3 Ra6 43.Kd3 Ra4 44.g3 h5 45.Ba1 Ra6 46.Bd4 Ra8 47.f4 Ra5 48.Bc3 Rb5 
49.Kc4 Rb1 50.Ra1 Rxa1 51.Bxa1 h4 52.g4 f5 53.gxf5 gxf5 54.e5 Bf8 55.e6+ 
Ke8 56.Kb3 Bd6 57.Bf6 Bxf4 58.Kxa3 Bd6+ 59.Ka4 f4 60.Kb5 Be7 61.Bxe7 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "8"]
[White "Cifuentes, Roberto"]
[Black "Braga, Cicero Nogueira"]
[Result "1/2-1/2"]
[ECO "B57"]
[EventDate "1977.??.??"]
[PlyCount "130"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Bc4 Bd7 7.O-O g6 8.h3 
Nxd4 9.Qxd4 Bg7 10.Bg5 O-O 11.Qe3 Bc6 12.Rfe1 Qa5 13.Qd2 Rfe8 14.Rad1 Qc5 
15.Bb3 Rac8 16.Qf4 Rcd8 17.Qh4 Rd7 18.Nd5 Bxd5 19.exd5 b5 20.a4 a6 21.Be3 
Qc8 22.axb5 axb5 23.Ra1 Rb7 24.Bd4 Nh5 25.Ra6 Bxd4 26.Qxd4 Nf6 27.Qe3 Qf5 
28.Qd4 Qc8 29.Rea1 Nd7 30.Rc6 Qd8 31.Qb4 Ne5 32.Rca6 Qc7 33.Ra8 Reb8 34.
Rxb8+ Rxb8 35.Ra6 Nd7 36.Qa5 Qxa5 37.Rxa5 Nc5 38.Ba2 Kg7 39.b4 Ne4 40.f3 
Nc3 41.Kf2 Kf6 42.Ke3 Nxa2 43.Rxa2 Ke5 44.Ra7 Re8 45.Rb7 Kxd5 46.Rxb5+ Kc4
47.Rb7 d5 48.Rc7+ Kxb4 49.Kd4 Kb5 50.Kxd5 Rd8+ 51.Ke5 Re8 52.f4 Kb6 53.Rc3
Ra8 54.Rc4 Kb7 55.g4 Ra3 56.c3 Ra1 57.f5 Ra5+ 58.Kf4 gxf5 59.gxf5 e6 60.
fxe6 fxe6 61.Re4 Rc5 62.c4 Kc7 63.Ke3 Kd6 64.Rh4 h5 65.Kd4 Rf5 1/2-1/2

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "8"]
[White "Ferrao, Luis"]
[Black "Clara Melendez, Romeo"]
[Result "1-0"]
[ECO "B99"]
[EventDate "1977.??.??"]
[PlyCount "65"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 Qc7
9.O-O-O Nbd7 10.Bd3 b5 11.Rhe1 Bb7 12.Qg3 b4 13.Nd5 exd5 14.e5 dxe5 15.
fxe5 Nxe5 16.Nf5 O-O-O 17.Qxe5 Qxe5 18.Nxe7+ Qxe7 19.Rxe7 Ne4 20.Rxb7 Nxg5
21.Re7 a5 22.h4 Ne6 23.Rxf7 Rhf8 24.Bf5 Rxf7 25.Bxe6+ Rfd7 26.Rxd5 Kc7 27.
Rxd7+ Rxd7 28.Bxd7 Kxd7 29.c3 Kd6 30.cxb4 axb4 31.a4 h5 32.Kd2 Kc5 33.Kd3 
1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "8"]
[White "Navarro, Roberto"]
[Black "Masculo, Jose Soares"]
[Result "0-1"]
[ECO "A46"]
[EventDate "1977.??.??"]
[PlyCount "76"]

1.d4 c5 2.Nf3 Nf6 3.Nc3 cxd4 4.Qxd4 Nc6 5.Qh4 e6 6.Bg5 Be7 7.O-O-O Qa5 8.
e4 a6 9.Bc4 d6 10.Rhe1 O-O 11.e5 dxe5 12.Bd3 e4 13.Nxe4 Nxe4 14.Bxe7 Nxe7 
15.Qxe4 Ng6 16.h4 Qxa2 17.h5 Qa1+ 18.Kd2 Qa5+ 19.Kc1 Qa1+ 20.Kd2 Qa5+ 21.
Kc1 Qxh5 22.Rh1 Qa5 23.Rh2 Qa1+ 24.Kd2 Qxb2 25.Rdh1 h6 26.g4 Bd7 27.Nd4 
Qb4+ 28.c3 Qd6 29.g5 Qf4+ 30.Kc2 Qxg5 31.Rg2 Qf4 32.Rhg1 Qxe4 33.Bxe4 e5 
34.Nf5 Bxf5 35.Bxf5 Rad8 36.Kb3 Rd6 37.c4 b6 38.Re1 Nh4 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "8"]
[White "Rivera, Daniel"]
[Black "Delgado, Felipe"]
[Result "1-0"]
[ECO "C96"]
[EventDate "1977.??.??"]
[PlyCount "81"]

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 Nc6 12.d5 Nb8 13.Nbd2 Re8 14.Nf1 Bf8 15.N3h2 g6 
16.Qf3 Nbd7 17.Bg5 Bg7 18.Ng4 h5 19.Nge3 Nf8 20.g4 N8h7 21.Bh4 Qd7 22.g5 
Nxg5 23.Bxg5 Nh7 24.Bh4 g5 25.Bg3 Qxh3 26.Qh1 h4 27.Qxh3 Bxh3 28.Bh2 Bh6 
29.f3 Nf6 30.Kf2 Kf8 31.Bg1 Ke7 32.Nh2 Rac8 33.Nhg4 Bxg4 34.fxg4 Rh8 35.
Nf5+ Kd7 36.Kf3 Ng8 37.a4 b4 38.cxb4 cxb4 39.Bd3 Ne7 40.Bxa6 Rc2 41.Bb5+ 
1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "8"]
[White "Vaca Pereira, Jaime"]
[Black "McCambridge, Vincent"]
[Result "0-1"]
[ECO "B87"]
[EventDate "1977.??.??"]
[PlyCount "86"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bc4 e6 7.Bb3 b5 8.Bg5 Be7
9.Qd2 Qa5 10.Bxf6 Bxf6 11.O-O-O Bb7 12.Nxe6 fxe6 13.Qxd6 Qd8 14.Qxe6+ Qe7 
15.Qb6 Bxc3 16.bxc3 Nc6 17.f4 Rb8 18.e5 Qa3+ 19.Kb1 Ba8 20.Qc7 Qe7 21.
Qxe7+ Kxe7 22.Rd6 Rhd8 23.Rhd1 Bb7 24.g4 Na5 25.f5 Nxb3 26.cxb3 Rxd6 27.
Rxd6 Bf3 28.Rxa6 Bxg4 29.Ra7+ Kf8 30.f6 gxf6 31.exf6 Rb6 32.Kc1 h5 33.a4 
bxa4 34.bxa4 Rxf6 35.Kd2 Rf2+ 36.Ke3 Rxh2 37.a5 h4 38.a6 h3 39.Ra8+ Kg7 
40.Rb8 Ra2 41.Kf4 h2 42.Rb1 Bd7 43.a7 Bc6 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "9"]
[White "Braga, Cicero Nogueira"]
[Black "Rivera, Daniel"]
[Result "1-0"]
[ECO "B41"]
[EventDate "1977.??.??"]
[PlyCount "50"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.c4 Nf6 6.Nc3 Bb4 7.Bd3 Nc6 8.Nxc6 
dxc6 9.e5 Nd7 10.f4 Nc5 11.Bc2 Qxd1+ 12.Kxd1 b5 13.Ne4 Nxe4 14.Bxe4 Bb7 
15.Be3 O-O-O+ 16.Ke2 c5 17.Bxb7+ Kxb7 18.Rac1 Rd7 19.cxb5 axb5 20.a3 Ba5 
21.Rxc5 Ka6 22.b4 Bb6 23.Rc6 Rb8 24.Rd1 Rdb7 25.Rdd6 Ka7 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "9"]
[White "Clara Melendez, Romeo"]
[Black "Vaca Pereira, Jaime"]
[Result "1-0"]
[ECO "B95"]
[EventDate "1977.??.??"]
[PlyCount "55"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.Qf3 Be7 8.O-O-O 
Qc7 9.Be2 Nc6 10.Qg3 e5 11.Nf5 Bxf5 12.exf5 Nd4 13.Bd3 Rc8 14.Be3 Qa5 15.
Kb1 Nb5 16.Bxb5+ axb5 17.Nd5 Nxd5 18.Rxd5 Qc7 19.Qxg7 Qxc2+ 20.Ka1 Qe4 21.
Rhd1 Kd7 22.Qxf7 Rc6 23.f6 Re8 24.fxe7 Rxe7 25.Qg8 Ra6 26.Qb8 Qa4 27.Rxd6+
Rxd6 28.Rxd6# 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "9"]
[White "Delgado, Felipe"]
[Black "Ferrao, Luis"]
[Result "1-0"]
[ECO "B99"]
[EventDate "1977.??.??"]
[PlyCount "57"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 Qc7
9.O-O-O Nbd7 10.Bd3 h6 11.Bxf6 Nxf6 12.Rhe1 Nd7 13.f5 Ne5 14.Qg3 Bg5+ 15.
Kb1 Qe7 16.Nf3 Nxf3 17.Qxf3 O-O 18.e5 dxe5 19.Rxe5 Bf6 20.Nd5 Qd8 21.fxe6 
Bxe5 22.e7 Qd6 23.Qe4 g6 24.exf8=Q+ Kxf8 25.Re1 Bf6 26.Nxf6 Qxf6 27.Rf1 
Bf5 28.Qb4+ Kg7 29.g4 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "9"]
[White "Hernandez, Hugo"]
[Black "Navarro, Roberto"]
[Result "0-1"]
[ECO "C71"]
[EventDate "1977.??.??"]
[PlyCount "66"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.d4 b5 6.Bb3 Nxd4 7.Nxd4 exd4 8.Bd5 
Rb8 9.Qxd4 c5 10.Qd1 Nf6 11.Bg5 Be7 12.Bc6+ Kf8 13.Bf4 Qc7 14.Bd5 Nxd5 15.
Qxd5 Bb7 16.Qd3 c4 17.Qe2 Bf6 18.c3 Re8 19.Nd2 Qe7 20.O-O d5 21.Rad1 Kg8 
22.Rfe1 dxe4 23.Nf1 h6 24.Qg4 Bc8 25.Qg3 Kh7 26.Rd6 Bh4 27.Qe3 g5 28.Qb6 
gxf4 29.g3 fxg3 30.Rxh6+ Kg7 31.Rxh8 gxf2+ 32.Kh1 Rxh8 33.Qd4+ Qf6 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "9"]
[White "Masculo, Jose Soares"]
[Black "Cifuentes, Roberto"]
[Result "1/2-1/2"]
[ECO "A05"]
[EventDate "1977.??.??"]
[PlyCount "109"]

1.Nf3 g6 2.g3 Bg7 3.Bg2 c5 4.O-O Nf6 5.d3 O-O 6.Nc3 Nc6 7.e4 d6 8.h3 h6 9.
Be3 e5 10.Nh2 Kh7 11.Nd5 Nxd5 12.exd5 Nd4 13.g4 f5 14.c3 f4 15.Bxd4 exd4 
16.c4 Bd7 17.Be4 h5 18.gxh5 Bxh3 19.hxg6+ Kh6 20.Qf3 Qh4 21.Kh1 Rae8 22.
Rg1 Re5 23.Rg4 Bxg4 24.Qxg4 Rh5 25.Qxh4 Rxh4 26.f3 Bf6 27.Kg2 Kg7 28.Ng4 
Rfh8 29.Rb1 Rb8 30.b4 cxb4 31.Rxb4 Rhh8 32.Nf2 Bh4 33.Ng4 Bg3 34.a4 Rhc8 
35.Rb1 Rc5 36.Rh1 Rh8 37.Rb1 b6 38.Rb5 Rb8 39.Bf5 Re8 40.Be4 Rb8 41.Bf5 
Rh8 42.Rb1 Rh5 43.Be4 Rc8 44.a5 Rb8 45.axb6 Rxb6 46.Rxb6 axb6 47.Kg1 Rh8 
48.Kg2 Ra8 49.Kf1 Ra2 50.Bf5 Rb2 51.Be4 b5 52.cxb5 Rxb5 53.Ke2 Rb2+ 54.Kf1
Bh4 55.Bf5 1/2-1/2

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "9"]
[White "McCambridge, Vincent"]
[Black "Bernat, Miguel"]
[Result "0-1"]
[ECO "A57"]
[EventDate "1977.??.??"]
[PlyCount "78"]

1.d4 Nf6 2.c4 c5 3.d5 b5 4.Nf3 g6 5.cxb5 a6 6.Nc3 d6 7.e4 Bg7 8.Be2 O-O 9.
O-O axb5 10.Bxb5 Ba6 11.Bxa6 Nxa6 12.a4 Qb6 13.Nd2 Nc7 14.Ra3 Rfb8 15.Qe2 
Nd7 16.Re1 Qa6 17.Nc4 Ne5 18.b3 Rb4 19.Nb5 Nxb5 20.axb5 Qb7 21.Rxa8+ Qxa8 
22.Bb2 Rxb3 23.Bxe5 Bxe5 24.g3 Bd4 25.b6 Qa6 26.Kf1 Qa4 27.Rc1 Bc3 28.Kg2 
Bd4 29.Rc2 Kg7 30.Ra2 Qb5 31.Rc2 Rb4 32.h3 Rb1 33.h4 Ra1 34.Ra2 Rc1 35.Rc2
Rb1 36.Ra2 Qb4 37.Na3 Rc1 38.Qb5 Qe1 39.g4 Qh1+ 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "10"]
[White "Bernat, Miguel"]
[Black "Navarro, Roberto"]
[Result "1-0"]
[ECO "E12"]
[EventDate "1977.??.??"]
[PlyCount "81"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.a3 Be7 5.Nc3 d5 6.Bg5 O-O 7.e3 Bb7 8.Rc1 Nbd7 
9.cxd5 exd5 10.Bd3 c5 11.O-O c4 12.Bb1 a6 13.Ne5 b5 14.f4 Re8 15.Qf3 Nf8 
16.Qh3 Ne4 17.Bxe4 dxe4 18.Bxe7 Qxe7 19.f5 f6 20.Ng4 Qd7 21.Rf4 a5 22.Nf2 
b4 23.Ncxe4 Qd5 24.Rg4 Nd7 25.Qh6 Re7 26.Nxf6+ Nxf6 27.Qxf6 Rae8 28.e4 Qd7
29.Qb6 h5 30.Rg5 Bxe4 31.f6 Re6 32.Qc5 Rxf6 33.Qxc4+ Qf7 34.Re5 Rxe5 35.
dxe5 Rxf2 36.Qxe4 Qa7 37.Kh1 Qa6 38.h3 Re2 39.Qf5 g6 40.Rc8+ Kh7 41.Rc7+ 
1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "10"]
[White "Cifuentes, Roberto"]
[Black "Hernandez, Hugo"]
[Result "0-1"]
[ECO "B70"]
[EventDate "1977.??.??"]
[PlyCount "66"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be2 Bg7 7.O-O O-O 8.Bg5 
a6 9.a4 Nc6 10.Nb3 Be6 11.Kh1 Na5 12.Nd4 Bc4 13.Re1 Rc8 14.Bf3 h6 15.Be3 
h5 16.Qd2 e5 17.Nde2 Be6 18.Bg5 Nc4 19.Qc1 Qa5 20.b3 Nb6 21.Qd2 Kh7 22.
Rad1 Nbd7 23.Qxd6 Rc6 24.Qd3 Rfc8 25.Nd5 Bxd5 26.exd5 Rxc2 27.Ng3 R8c3 28.
Bd2 Rxd3 29.Bxa5 Rxb3 30.Kg1 Rbb2 31.d6 b6 32.Ne4 bxa5 33.Ng5+ Kg8 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "10"]
[White "Ferrao, Luis"]
[Black "Braga, Cicero Nogueira"]
[Result "0-1"]
[ECO "B78"]
[EventDate "1977.??.??"]
[PlyCount "72"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Bc4 
Nc6 9.Qd2 Bd7 10.h4 Rc8 11.Bb3 Ne5 12.O-O-O Nc4 13.Bxc4 Rxc4 14.h5 Nxh5 
15.g4 Nf6 16.Nde2 Re8 17.Bh6 Bh8 18.e5 Nxg4 19.fxg4 Bxe5 20.Bf4 Qa5 21.
Bxe5 Qxe5 22.Qh6 Qg7 23.Qxg7+ Kxg7 24.g5 Rg4 25.Rdg1 Rxg1+ 26.Rxg1 h6 27.
gxh6+ Kxh6 28.Nd5 g5 29.Kd2 f5 30.Ke3 Rc8 31.c3 Rc5 32.Nb4 Rc4 33.b3 Rh4 
34.Kf2 f4 35.Nd5 Rh2+ 36.Kf1 Bh3+ 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "10"]
[White "McCambridge, Vincent"]
[Black "Clara Melendez, Romeo"]
[Result "1-0"]
[ECO "B49"]
[EventDate "1977.??.??"]
[PlyCount "103"]

1.e4 e6 2.d4 c5 3.Nf3 cxd4 4.Nxd4 a6 5.Nc3 Qc7 6.Be2 Nf6 7.O-O Nc6 8.Be3 
Be7 9.f4 O-O 10.e5 Ne8 11.Nxc6 bxc6 12.Ne4 d6 13.exd6 Nxd6 14.Nxd6 Qxd6 
15.Bd3 Qb4 16.Kh1 Bf6 17.Qf3 Rb8 18.c3 Qb7 19.Rad1 Bd7 20.Rf2 Rfd8 21.Rfd2
g6 22.h3 Be8 23.Kh2 Qc7 24.Bxa6 Rxd2 25.Rxd2 Qa5 26.Bc4 c5 27.Qf2 Be7 28.
Qg3 Rd8 29.Rxd8 Qxd8 30.Qf2 Qa5 31.a3 Bc6 32.Qd2 Qa4 33.Qd3 Qa8 34.Qe2 Kg7
35.Bd2 Bd6 36.Bd3 Qa4 37.c4 Qb3 38.Bc3+ Kg8 39.Qd2 Qb8 40.g3 Be7 41.Qe3 
Bd6 42.Be4 Ba4 43.h4 h5 44.Kg2 Qb3 45.Qd3 Bc7 46.Kh3 Kf8 47.Be5 Qxd3 48.
Bxd3 Bxe5 49.fxe5 Bb3 50.Kg2 Kg7 51.Kf3 f6 52.Kf4 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "10"]
[White "Rivera, Daniel"]
[Black "Masculo, Jose Soares"]
[Result "0-1"]
[ECO "B97"]
[EventDate "1977.??.??"]
[PlyCount "72"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Qb6 8.Nb3 
Nbd7 9.Qf3 Be7 10.O-O-O Qc7 11.g4 h6 12.Bxf6 Bxf6 13.h4 Nb6 14.g5 hxg5 15.
hxg5 Rxh1 16.Qxh1 Bxc3 17.Qh8+ Ke7 18.bxc3 Qxc3 19.e5 d5 20.Qxg7 Qe3+ 21.
Kb1 Na4 22.Qf6+ Ke8 23.Rd4 Qe1+ 24.Nc1 Nc3+ 25.Kb2 Qxf1 26.g6 fxg6 27.
Qxg6+ Kd7 28.Kxc3 Qxc1 29.Qf7+ Kc6 30.Qe8+ Kb6 31.Qd8+ Ka7 32.Rb4 Qe3+ 33.
Kb2 Qc5 34.Qd6 Qxd6 35.exd6 Bd7 36.c4 a5 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "10"]
[White "Vaca Pereira, Jaime"]
[Black "Delgado, Felipe"]
[Result "1/2-1/2"]
[ECO "B70"]
[EventDate "1977.??.??"]
[PlyCount "76"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Be2 g6 7.Be3 Bg7 8.f3 
O-O 9.Qd2 d5 10.O-O-O e6 11.exd5 Nxd5 12.Nxd5 Qxd5 13.Kb1 Nxd4 14.Bxd4 e5 
15.Bc3 Qc6 16.Qd6 Qxd6 17.Rxd6 Be6 18.Rhd1 Rfc8 19.Bb5 Bf8 20.R6d3 Bf5 21.
Re3 Rd8 22.Rxd8 Rxd8 23.Bd3 Bxd3 24.Rxd3 Rxd3 25.cxd3 Bd6 26.Kc2 f5 27.Kb3
Kf7 28.h3 Ke6 29.Kc4 a6 30.a4 h6 31.b4 b6 32.Bd2 h5 33.Be3 Bc7 34.g3 h4 
35.gxh4 Kd6 36.Bg5 Ke6 37.Be3 Kd6 38.Bg5 Ke6 1/2-1/2

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "11"]
[White "Braga, Cicero Nogueira"]
[Black "Vaca Pereira, Jaime"]
[Result "0-1"]
[ECO "B76"]
[EventDate "1977.??.??"]
[PlyCount "60"]

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.O-O-O Bd7 10.h4 Ne5 11.h5 Rc8 12.Kb1 Nc4 13.Bxc4 Rxc4 14.Nde2 b5 15.
e5 dxe5 16.hxg6 Qc8 17.Bh6 fxg6 18.Bxg7 Kxg7 19.g4 Be6 20.Qh6+ Kg8 21.g5 
Nh5 22.Rxh5 gxh5 23.g6 hxg6 24.Qxg6+ Kh8 25.Qh6+ Kg8 26.Qg6+ Kh8 27.Qxh5+ 
Kg8 28.Rg1+ Bg4 29.Qg6+ Kh8 30.Qh5+ Bxh5 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "11"]
[White "Clara Melendez, Romeo"]
[Black "Bernat, Miguel"]
[Result "0-1"]
[ECO "C08"]
[EventDate "1977.??.??"]
[PlyCount "60"]

1.e4 e6 2.d4 d5 3.Nd2 a6 4.Ngf3 c5 5.exd5 exd5 6.Be2 cxd4 7.Nxd4 Bd6 8.
N2f3 Ne7 9.O-O O-O 10.c3 Nbc6 11.Re1 Qc7 12.h3 Bd7 13.Bd3 Ng6 14.Qc2 Rfe8 
15.Bd2 Na5 16.b3 Be7 17.Re2 Bf6 18.Rae1 Rxe2 19.Rxe2 Rc8 20.Qb1 b5 21.Kh1 
Nb7 22.Nh2 Nc5 23.Ng4 Nxd3 24.Qxd3 Nf4 25.Bxf4 Qxf4 26.Re1 g6 27.Kg1 Kg7 
28.Kf1 Qd6 29.Re2 b4 30.cxb4 Qxb4 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "11"]
[White "Delgado, Felipe"]
[Black "McCambridge, Vincent"]
[Result "0-1"]
[ECO "B94"]
[EventDate "1977.??.??"]
[PlyCount "96"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 Nbd7 7.f4 Qb6 8.Qd2 
Qxb2 9.Nb3 Qa3 10.Bd3 e6 11.O-O Be7 12.Rae1 h6 13.Bxf6 Bxf6 14.Kh1 Qb4 15.
Nd5 Qxd2 16.Nxf6+ Nxf6 17.Nxd2 Bd7 18.Nc4 Ke7 19.e5 Ne8 20.Nb6 Rd8 21.Nxd7
Rxd7 22.f5 d5 23.fxe6 fxe6 24.Bg6 Rf8 25.Rxf8 Kxf8 26.Rf1+ Ke7 27.Rf7+ Kd8
28.Rf8 Re7 29.Rg8 Kd7 30.Bxe8+ Rxe8 31.Rxg7+ Re7 32.Rg6 h5 33.Rf6 Rg7 34.
Kg1 Rg5 35.Kf2 Rxe5 36.Kg3 Re2 37.Rf7+ Kc6 38.Rf8 d4 39.Rh8 Kd5 40.Rxh5+ 
e5 41.Kf3 Rxc2 42.Rh7 e4+ 43.Kf4 Rf2+ 44.Kg3 e3 45.Rxb7 Rxa2 46.Re7 e2 47.
Kf3 d3 48.g4 Ra1 0-1

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "11"]
[White "Hernandez, Hugo"]
[Black "Rivera, Daniel"]
[Result "1/2-1/2"]
[ECO "B03"]
[EventDate "1977.??.??"]
[PlyCount "83"]

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.exd6 exd6 6.Nc3 Bf5 7.Nf3 Nc6 8.Be2 
Be7 9.O-O O-O 10.b3 Bf6 11.Be3 Qd7 12.Qd2 h6 13.Rac1 Ne7 14.b4 c6 15.a4 
Qe6 16.Qa2 Bg4 17.Nd2 Bxe2 18.Nxe2 Qg4 19.Rfe1 Nf5 20.h3 Qh4 21.Nf3 Qe4 
22.Bd2 Nh4 23.Nxh4 Qxh4 24.a5 Nc8 25.Be3 Ne7 26.Qc2 d5 27.c5 Rfe8 28.Qd3 
Qe4 29.Qd2 a6 30.Ng3 Qg6 31.Qc2 Qxc2 32.Rxc2 Ng6 33.Nf5 Re6 34.Rce2 Rae8 
35.Kf1 Nh4 36.Nd6 R8e7 37.f4 g6 38.Bf2 Nf5 39.Nxf5 gxf5 40.Rxe6 Rxe6 41.
Rxe6 fxe6 42.Ke2 1/2-1/2

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "11"]
[White "Masculo, Jose Soares"]
[Black "Ferrao, Luis"]
[Result "1-0"]
[ECO "A04"]
[EventDate "1977.??.??"]
[PlyCount "71"]

1.g3 c5 2.Bg2 Nc6 3.Nf3 g6 4.O-O Bg7 5.d3 d5 6.Nc3 Nf6 7.a3 O-O 8.e4 dxe4 
9.dxe4 Bg4 10.Be3 Qa5 11.h3 Rfd8 12.Qc1 Bxf3 13.Bxf3 Nd4 14.Bd1 Qa6 15.Bg5
Qe6 16.Qf4 Rac8 17.Re1 b5 18.Re3 b4 19.Nd5 Nxd5 20.exd5 Qxd5 21.Rxe7 Re8 
22.axb4 Rxe7 23.Bxe7 Re8 24.Rxa7 Nc6 25.Bf3 Qe6 26.Bxc6 Qxc6 27.b5 Qe6 28.
Bxc5 Qe1+ 29.Kg2 Qe6 30.b4 h5 31.b6 Qc6+ 32.Qf3 Qe6 33.b7 Be5 34.Ra8 f6 
35.c4 Qd7 36.Qd5+ 1-0

[Event "3rd Pan-American U20"]
[Site "Sao Paulo BRA"]
[Date "1977.12.??"]
[Round "11"]
[White "Navarro, Roberto"]
[Black "Cifuentes, Roberto"]
[Result "1/2-1/2"]
[ECO "D01"]
[EventDate "1977.??.??"]
[PlyCount "33"]

1.d4 Nf6 2.Nc3 d5 3.Bg5 Nbd7 4.f3 c6 5.Qd2 e5 6.dxe5 Nxe5 7.e4 h6 8.Bxf6 
Qxf6 9.exd5 Bf5 10.f4 Ng4 11.Qe2+ Qe7 12.Qxe7+ Kxe7 13.Bd3 Bxd3 14.cxd3 
Ne3 15.Kf2 Nxd5 16.Nxd5+ cxd5 17.Nf3 1/2-1/2

