[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "1"]
[White "Botto, Dardo"]
[Black "Gomez Baillo, Jorge"]
[Result "0-1"]
[ECO "B67"]
[EventDate "1975.??.??"]
[PlyCount "68"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Bg5 e6 7.Qd2 a6 8.O-O-O 
Bd7 9.f4 h6 10.Bh4 Nxe4 11.Nxe4 Qxh4 12.Nxc6 Bxc6 13.Nxd6+ Bxd6 14.Qxd6 
Rd8 15.Qxd8+ Qxd8 16.Rxd8+ Kxd8 17.Bd3 g5 18.f5 Bxg2 19.Re1 Bh3 20.fxe6 
Bxe6 21.Kd2 Kd7 22.a4 f5 23.b4 f4 24.a5 Rc8 25.b5 axb5 26.Bxb5+ Kd6 27.a6 
bxa6 28.Bxa6 Rc7 29.Bd3 g4 30.Rg1 h5 31.Be2 Ke5 32.h3 f3 33.Bd3 Kf4 34.Bg6
g3 0-1

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "1"]
[White "Bravo, Hector"]
[Black "Villarreal, Jose Felix"]
[Result "1/2-1/2"]
[ECO "C12"]
[EventDate "1975.??.??"]
[PlyCount "113"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Be3 Ne4 7.Qg4 g6 8.Bd3 Nxc3 
9.a3 Ba5 10.Bd2 Na4 11.Bxa5 Nxb2 12.Be2 b6 13.Bc3 Na4 14.Bd2 Ba6 15.h4 h5 
16.Qf3 c5 17.Bxa6 Nxa6 18.Bg5 Qc7 19.Ne2 Qd7 20.Qf6 Rh7 21.g4 cxd4 22.gxh5
gxh5 23.Nxd4 Nc3 24.f3 Rc8 25.Rg1 Rc4 26.Bd2 Qe7 27.Rg8+ Kd7 28.Qxe7+ Kxe7
29.Ra8 Nc7 30.Rxa7 Rg7 31.Bxc3 Rxc3 32.Kd2 Rc4 33.c3 Rg2+ 34.Kd3 Kd8 35.
Rb1 b5 36.Nxb5 Nxb5 37.Rxb5 Rc7 38.Rb8+ Kd7 39.Rxc7+ Kxc7 40.Rf8 Rh2 41.
Rxf7+ Kc6 42.Rf4 Kc5 43.a4 Ra2 44.Rb4 Rf2 45.Rb5+ Kc6 46.Ke3 Rc2 47.Rb3 
Ra2 48.Rb4 Kc5 49.Rb5+ Kc6 50.Ra5 Kb7 51.Kf4 Ra3 52.Rc5 Rxa4+ 53.Kg5 Ra8 
54.c4 d4 55.Kf6 Ra6 56.Rb5+ Rb6 57.Ra5 1/2-1/2

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "1"]
[White "Cifuentes, Roberto"]
[Black "Tosan, Felipe"]
[Result "1-0"]
[ECO "E69"]
[EventDate "1975.??.??"]
[PlyCount "61"]

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 c6 
9.h3 Re8 10.d5 cxd5 11.cxd5 Nc5 12.Ne1 a5 13.Nd3 Nxd3 14.Qxd3 Nh5 15.a4 f5
16.Ra3 Rf8 17.Bd2 f4 18.Nb5 g5 19.b4 axb4 20.Bxb4 Bd7 21.Nxd6 fxg3 22.Qc4 
Rxf2 23.Rxf2 gxf2+ 24.Kxf2 g4 25.Nf5 Rc8 26.Ne7+ Qxe7 27.Qxc8+ Bxc8 28.
Bxe7 gxh3 29.Bxh3 Bxh3 30.Rxh3 Nf4 31.Rb3 1-0

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "1"]
[White "Mundell, Peter"]
[Black "Christiansen, Larry"]
[Result "1/2-1/2"]
[ECO "D94"]
[EventDate "1975.??.??"]
[PlyCount "107"]

1.d4 Nf6 2.Nf3 g6 3.c4 Bg7 4.Nc3 d5 5.e3 O-O 6.cxd5 Nxd5 7.Nxd5 Qxd5 8.Be2
c5 9.dxc5 Qxd1+ 10.Bxd1 Na6 11.Bc2 Nxc5 12.Rb1 Rd8 13.O-O Be6 14.b3 Rac8 
15.Ba3 b5 16.Rfd1 Bd5 17.Nd4 a6 18.Rbc1 e5 19.Ne2 Bf8 20.Bb1 Be6 21.h3 
Rxd1+ 22.Rxd1 a5 23.Bb2 a4 24.bxa4 Bc4 25.Nc3 b4 26.Nd5 Bxd5 27.Rxd5 Nxa4 
28.Rd2 f5 29.Bd3 e4 30.Bb5 Nxb2 31.Rxb2 h5 32.g3 Rc3 33.h4 Kg7 34.Ba4 Kf6 
35.Kg2 g5 36.Bd1 Kg6 37.Kh3 gxh4 38.Kxh4 Be7+ 39.Kh3 h4 40.Rb1 hxg3 41.
Kxg3 Rd3 42.Bb3 Kg5 43.Kg2 Rd2 44.Rd1 Rb2 45.Kg3 Bf6 46.Rf1 Be5+ 47.f4+ 
exf3+ 48.Kxf3 Rh2 49.Rf2 Rh3+ 50.Ke2 Bd6 51.Bc2 f4 52.exf4+ Bxf4 53.Rf3 
Rh2+ 54.Rf2 1/2-1/2

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "1"]
[White "Sunye Neto, Jaime"]
[Black "Pantoja, Abel"]
[Result "1-0"]
[ECO "A38"]
[EventDate "1975.??.??"]
[PlyCount "58"]

1.Nf3 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O c5 6.Nc3 Nc6 7.d3 e6 8.Be3 h6 
9.Bxc5 d6 10.Ba3 a5 11.Nb5 Ne8 12.Qd2 Na7 13.Nxa7 Rxa7 14.e4 Bd7 15.d4 f6 
16.Rac1 b5 17.cxb5 Bxb5 18.Rfe1 Rff7 19.Bh3 Rae7 20.d5 f5 21.e5 Qb6 22.
exd6 Nxd6 23.dxe6 Ne4 24.exf7+ Rxf7 25.Qe3 Qb7 26.Nd2 Rd7 27.Nxe4 Bd4 28.
Qxh6 Rg7 29.Nd6 Qb6 1-0

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "2"]
[White "Christiansen, Larry"]
[Black "Bravo, Hector"]
[Result "1-0"]
[ECO "A08"]
[EventDate "1975.??.??"]
[PlyCount "79"]

1.Nf3 d5 2.g3 Nf6 3.Bg2 e6 4.O-O Be7 5.d3 O-O 6.Nbd2 c5 7.e4 Nc6 8.Re1 Re8
9.e5 Nd7 10.Nf1 f6 11.exf6 Nxf6 12.Bf4 Bd6 13.Ne5 Qc7 14.Qe2 Nd4 15.Qd2 
Nh5 16.c3 Nxf4 17.cxd4 Nxg2 18.Kxg2 cxd4 19.Rac1 Qe7 20.a3 Bd7 21.Re2 Bb5 
22.h4 Qf6 23.Nh2 Rf8 24.f4 Be8 25.Rce1 Rc8 26.Nhf3 Bc5 27.Rc1 Bb5 28.Qe1 
Qf5 29.Rec2 b6 30.Nxd4 Bxd4 31.Rxc8 Bxe5 32.Rxf8+ Kxf8 33.Qb4+ Kf7 34.Qxb5
Bd4 35.Qd7+ Kg6 36.Rc6 Bxb2 37.Rxe6+ Bf6 38.Qe8+ Kh6 39.Re3 Qg4 40.Qe6 1-0

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "2"]
[White "Cifuentes, Roberto"]
[Black "Mundell, Peter"]
[Result "1-0"]
[ECO "A58"]
[EventDate "1975.??.??"]
[PlyCount "115"]

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 d6 7.g3 g6 8.Bg2 Bg7 
9.Nf3 O-O 10.O-O Nbd7 11.Bg5 Qc7 12.Qc1 Rfb8 13.Rd1 Nb6 14.Rb1 Ra7 15.e4 
Ne8 16.h4 Nc4 17.h5 Ne5 18.hxg6 fxg6 19.Ne1 Qd7 20.Bh6 Nf6 21.Bxg7 Kxg7 
22.Nf3 Nxf3+ 23.Bxf3 Rf8 24.Kg2 h6 25.Rh1 g5 26.Qe3 Ng4 27.Bxg4 Qxg4 28.f3
Qd7 29.Rh5 e5 30.dxe6 Qxe6 31.Rbh1 Rf6 32.Nd5 Rg6 33.f4 Qg4 34.f5 Qe2+ 35.
Qxe2 Bxe2 36.R5h2 g4 37.fxg6 Bf3+ 38.Kf2 Bxh1 39.Rxh1 Rxa2 40.Rb1 Kxg6 41.
Ke3 Kg5 42.Nc3 Ra7 43.Rd1 Rd7 44.Rd5+ Kf6 45.Kf4 Ke6 46.Kxg4 Rg7+ 47.Kf4 
Rb7 48.Rd2 Rf7+ 49.Ke3 Rg7 50.Ne2 Rg5 51.Nf4+ Ke7 52.Kf3 Rg7 53.Rh2 Rh7 
54.g4 Kf6 55.Rh5 Rb7 56.Rxh6+ Ke5 57.Ke3 c4 58.Re6# 1-0

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "2"]
[White "Gomez Baillo, Jorge"]
[Black "Sunye Neto, Jaime"]
[Result "0-1"]
[ECO "B80"]
[EventDate "1975.??.??"]
[PlyCount "70"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.g3 a6 7.Bg2 Bd7 8.Be3 Nc6
9.Qe2 Qc7 10.f4 Rc8 11.O-O Be7 12.f5 Nxd4 13.Bxd4 Qc4 14.Qd2 e5 15.Bf2 b5 
16.a3 a5 17.Rfe1 O-O 18.Bf1 Qc7 19.Bxb5 Bxb5 20.Nxb5 Qxc2 21.Rad1 Qxd2 22.
Rxd2 Rc6 23.h3 Rb8 24.Nc3 Bd8 25.Red1 Bc7 26.g4 h6 27.Kg2 Rc4 28.Kf3 Rb3 
29.Be3 a4 30.Re2 Ba5 31.Nb1 Nxe4 32.Rd5 Bb6 33.h4 Nf6 34.Rxd6 Rf4+ 35.Kg2 
Rxe3 0-1

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "2"]
[White "Tosan, Felipe"]
[Black "Pantoja, Abel"]
[Result "1-0"]
[ECO "B98"]
[EventDate "1975.??.??"]
[PlyCount "55"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 h6 
9.Bh4 O-O 10.O-O-O Qc7 11.g4 e5 12.Nf5 Bxf5 13.gxf5 exf4 14.Rg1 Kh7 15.
Bxf6 Bxf6 16.Nd5 Qd8 17.Nxf6+ Qxf6 18.Qxf4 Qe5 19.Qg4 Qf6 20.Rxd6 Qg5+ 21.
Qxg5 hxg5 22.Rxg5 g6 23.fxg6+ fxg6 24.Bd3 Nc6 25.e5 Kg7 26.Rgxg6+ Kf7 27.
Bc4+ Ke7 28.Rge6+ 1-0

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "2"]
[White "Villarreal, Jose Felix"]
[Black "Botto, Dardo"]
[Result "1-0"]
[ECO "B23"]
[EventDate "1975.??.??"]
[PlyCount "79"]

1.e4 c5 2.Nc3 d6 3.f4 g6 4.Nf3 Bg7 5.Bc4 Nc6 6.O-O e6 7.f5 exf5 8.d3 Nge7 
9.Qe1 O-O 10.Qh4 h5 11.Bg5 Qc7 12.Rae1 fxe4 13.dxe4 Be6 14.Bxe6 fxe6 15.
Rd1 Bxc3 16.bxc3 d5 17.exd5 exd5 18.g4 hxg4 19.Qxg4 Rf7 20.Rde1 Qc8 21.Qg2
Qf8 22.Re6 Qg7 23.Bxe7 Nxe7 24.Rfe1 Re8 25.Ne5 Rf6 26.Nxg6 Rxe6 27.Rxe6 
Kh7 28.Qh3+ Kg8 29.Qg3 Kh7 30.Qh4+ Kg8 31.Qg5 Kh7 32.Rxe7 Rxe7 33.Qxe7 
Kxg6 34.Qxg7+ Kxg7 35.Kg2 Kg6 36.Kf3 Kg5 37.Kg3 b6 38.Kf3 Kh4 39.Kf4 Kh3 
40.Ke5 1-0

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "3"]
[White "Botto, Dardo"]
[Black "Christiansen, Larry"]
[Result "0-1"]
[ECO "B61"]
[EventDate "1975.??.??"]
[PlyCount "44"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 Bd7 7.Qd2 Rc8 8.Be2 
Nxd4 9.Qxd4 Qa5 10.Bxf6 gxf6 11.O-O Rg8 12.Nd5 Rxc2 13.b4 Qa3 14.Bc4 Rxg2+
15.Kxg2 Bh3+ 16.Kg1 Qf3 17.Ne3 Bh6 18.Qd1 Qxe3 19.Qd5 Qf3 20.Qxf7+ Kd7 21.
Bb5+ Rc6 22.Qg8 Bg5 0-1

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "3"]
[White "Bravo, Hector"]
[Black "Cifuentes, Roberto"]
[Result "1/2-1/2"]
[ECO "C92"]
[EventDate "1975.??.??"]
[PlyCount "109"]

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 Be6 10.a4 Bxb3 11.Qxb3 Na5 12.Qc2 c5 13.d3 Nd7 14.Nbd2 Nb6 15.axb5 
axb5 16.b3 Qc7 17.Bb2 Ra7 18.Rec1 Rfa8 19.d4 c4 20.bxc4 Nbxc4 21.Rcb1 Nxd2
22.Qxd2 Nc4 23.Rxa7 Rxa7 24.Qc2 Ra2 25.Qb3 Qa5 26.Kh2 Qa4 27.Bc1 Rxf2 28.
Qxa4 bxa4 29.Rb4 Rc2 30.Bg5 f6 31.Rxc4 fxg5 32.Rxa4 Rxc3 33.dxe5 dxe5 34.
Nxe5 h5 35.Ra8+ Kh7 36.Nd7 h4 37.e5 Kg6 38.Ra6+ Kf5 39.e6 Re3 40.Kg1 Rxe6 
41.Ra5+ Kf4 42.Kf2 Bb4 43.Rd5 Rd6 44.Rxd6 Bxd6 45.g3+ Ke4 46.gxh4 gxh4 47.
Kg2 Bg3 48.Nc5+ Kd5 49.Nb3 Be1 50.Kf3 Ke5 51.Nc5 Kf5 52.Ne4 Bb4 53.Nf2 g5 
54.Ne4 Be7 55.Nxg5 1/2-1/2

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "3"]
[White "Mundell, Peter"]
[Black "Tosan, Felipe"]
[Result "0-1"]
[ECO "E94"]
[EventDate "1975.??.??"]
[PlyCount "79"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Nf3 e5 7.d5 Nbd7 8.O-O Nc5 
9.Qc2 a5 10.Be3 Ne8 11.Ne1 f5 12.f3 f4 13.Bf2 g5 14.Nd3 b6 15.a3 g4 16.
fxg4 Qg5 17.Nxc5 bxc5 18.Qd3 Bxg4 19.Bxg4 Qxg4 20.Qf3 Qg6 21.Rab1 Nf6 22.
Rfe1 Rf7 23.Kh1 Kh8 24.Rg1 Nh5 25.b4 cxb4 26.axb4 axb4 27.Rxb4 Rg8 28.Bh4 
Bf6 29.Bxf6+ Rxf6 30.Ne2 Ng3+ 31.Nxg3 fxg3 32.Qe3 gxh2 33.Kxh2 Rf1 34.Rb2 
Qh5+ 35.Qh3 Qxh3+ 36.gxh3 Rfxg1 37.h4 R1g4 38.Kh3 Rxe4 39.Rg2 Rxg2 40.Kxg2
0-1

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "3"]
[White "Pantoja, Abel"]
[Black "Gomez Baillo, Jorge"]
[Result "0-1"]
[ECO "D25"]
[EventDate "1975.??.??"]
[PlyCount "64"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 Bg4 5.Bxc4 e6 6.O-O c5 7.Be2 Nbd7 8.Nbd2 
Be7 9.h3 Bh5 10.b3 O-O 11.Bb2 Rc8 12.Rc1 Nd5 13.Nc4 Bf6 14.Nd6 Rc6 15.Nxb7
Qc7 16.Bb5 Qxb7 17.Bxc6 Qxc6 18.e4 Nc7 19.Ne5 Nxe5 20.Qxh5 Nd3 21.d5 exd5 
22.Bxf6 Qxf6 23.Rcd1 dxe4 24.f3 Qd4+ 25.Kh2 e3 26.Rfe1 Qf4+ 27.g3 Qd4 28.
Re2 Nb5 29.Qf5 Rd8 30.Rc2 Nc3 31.Rxc3 Qxc3 32.Rxd3 Qxd3 0-1

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "3"]
[White "Sunye Neto, Jaime"]
[Black "Villarreal, Jose Felix"]
[Result "1-0"]
[ECO "D32"]
[EventDate "1975.??.??"]
[PlyCount "61"]

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 cxd4 5.Qxd4 Nc6 6.Qd1 exd5 7.Qxd5 Bd7 8.e3
Nf6 9.Qd1 Bc5 10.Nf3 Ke7 11.Bc4 Bg4 12.O-O Qxd1 13.Rxd1 Rhe8 14.Bd2 Rad8 
15.Be1 a6 16.Nd5+ Nxd5 17.Bxd5 Rd6 18.Rac1 Ba7 19.h3 Be6 20.Bxe6 Rxe6 21.
Bc3 f6 22.Rd2 Rd8 23.Rxd8 Kxd8 24.Rd1+ Ke7 25.Nh4 g6 26.Nf3 Bc5 27.Kf1 Bb4
28.Nd4 Bxc3 29.Nxe6 Bxb2 30.Nc5 Ba3 31.Nxb7 1-0

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "4"]
[White "Christiansen, Larry"]
[Black "Sunye Neto, Jaime"]
[Result "1/2-1/2"]
[ECO "B84"]
[EventDate "1975.??.??"]
[PlyCount "81"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 a6 7.f4 Qc7 8.O-O Nc6
9.Be3 Be7 10.a4 Bd7 11.Nb3 b6 12.Bf3 Rb8 13.Qe2 Nb4 14.Kh1 e5 15.fxe5 dxe5
16.Bg5 O-O 17.Bxf6 Bxf6 18.Bg4 Bxg4 19.Qxg4 Be7 20.Rf2 Rbd8 21.Raf1 Qc4 
22.Qf5 Nxc2 23.Rxc2 Qxb3 24.Rcf2 Qe6 25.Qh5 Bc5 26.Rf3 Rd4 27.Rg3 g6 28.
Qh6 Rd7 29.Rgf3 f6 30.Nd5 Rdf7 31.b4 Be7 32.b5 axb5 33.axb5 Bc5 34.Rh3 f5 
35.Qh4 Be7 36.Nxe7+ Qxe7 37.Qxe7 Rxe7 38.exf5 Rxf5 39.Rxf5 gxf5 40.Rh6 Rd7
41.Kg1 1/2-1/2

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "4"]
[White "Cifuentes, Roberto"]
[Black "Botto, Dardo"]
[Result "1-0"]
[ECO "A97"]
[EventDate "1975.??.??"]
[PlyCount "86"]

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d6 7.Nc3 Qe8 8.Bg5 Ne4 
9.Bxe7 Nxc3 10.bxc3 Qxe7 11.e3 Nd7 12.Nd2 c6 13.a4 e5 14.a5 a6 15.Qb3 Qf7 
16.Qa3 Qg6 17.f4 e4 18.c5 d5 19.c4 Nf6 20.Rab1 h5 21.cxd5 cxd5 22.Qc1 Kh7 
23.Qe1 h4 24.gxh4 Rh8 25.Qg3 Qf7 26.Bh3 Kg8 27.Kf2 Ng4+ 28.Bxg4 fxg4 29.
Rb6 Qe7 30.Rd6 Rxh4 31.Rxd5 Rh3 32.Re5 Qd8 33.Qg2 Qh4+ 34.Kg1 g3 35.Nxe4 
gxh2+ 36.Kh1 Bg4 37.Rg5 Be6 38.Rh5 Qe7 39.Rxh3 Bxh3 40.Qxh3 Qxe4+ 41.Qf3 
Qc2 42.Rf2 Qb3 43.Kxh2 Re8 1-0

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "4"]
[White "Mundell, Peter"]
[Black "Bravo, Hector"]
[Result "0-1"]
[ECO "D40"]
[EventDate "1975.??.??"]
[PlyCount "82"]

1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.e3 d5 5.Nc3 Nc6 6.b3 cxd4 7.Nxd4 Bb4 8.Bb2 Qa5
9.Qc2 Nxd4 10.exd4 Ne4 11.a3 Bxc3+ 12.Bxc3 Qxc3+ 13.Qxc3 Nxc3 14.c5 Ne4 
15.f3 Nf6 16.b4 a6 17.Kd2 Bd7 18.Bd3 Ba4 19.Rhb1 Kd7 20.Bc2 Bxc2 21.Kxc2 
Kc7 22.Kd3 Rhe8 23.Re1 Nd7 24.Re2 Nb8 25.Rae1 Nc6 26.Kc3 g5 27.Kd3 Kd7 28.
Kc3 f6 29.Kd3 e5 30.dxe5 Rxe5 31.Rxe5 Nxe5+ 32.Kd4 Rd8 33.Rg1 Kc7 34.Re1 
Rd7 35.Re2 Nc6+ 36.Kd3 Re7 37.Rxe7+ Nxe7 38.a4 Kc6 39.Kc3 a5 40.g3 axb4+ 
41.Kxb4 Nf5 0-1

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "4"]
[White "Tosan, Felipe"]
[Black "Gomez Baillo, Jorge"]
[Result "0-1"]
[ECO "B88"]
[EventDate "1975.??.??"]
[PlyCount "98"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Bc4 e6 7.O-O a6 8.Bb3 
Qc7 9.Be3 Be7 10.f4 Nxd4 11.Bxd4 O-O 12.f5 b5 13.a3 e5 14.Be3 Bb7 15.Nd5 
Bxd5 16.exd5 Ne4 17.Qg4 Nf6 18.Qh3 Ne4 19.Qg4 Nf6 20.Qf3 Nd7 21.c3 Qb7 22.
g4 f6 23.Qh3 Rfc8 24.Qh5 Nf8 25.Rf3 Bd8 26.g5 fxg5 27.Bxg5 Qf7 28.Qg4 Bxg5
29.Qxg5 Nd7 30.Rg3 Nf6 31.Bc2 Ra7 32.h4 Kf8 33.Rf1 Qxd5 34.h5 h6 35.Qg6 
Qf7 36.Qxf7+ Rxf7 37.Bb3 d5 38.Rd3 Rd7 39.Rfd1 Rcd8 40.Kf2 Ke8 41.Kg1 Ke7 
42.R1d2 Kd6 43.Bxd5 Kc7 44.c4 e4 45.Rd4 bxc4 46.Rxc4+ Kb6 47.Rb4+ Ka5 48.
Rc2 Rxd5 49.Rc6 R8d6 0-1

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "4"]
[White "Villarreal, Jose Felix"]
[Black "Pantoja, Abel"]
[Result "1-0"]
[ECO "B21"]
[EventDate "1975.??.??"]
[PlyCount "53"]

1.e4 c5 2.d4 cxd4 3.c3 Nc6 4.cxd4 d6 5.Nc3 Nf6 6.Bb5 a6 7.Ba4 b5 8.Bc2 Bb7
9.Nf3 e5 10.O-O Be7 11.Nd5 Nxd5 12.exd5 Nb4 13.dxe5 Nxc2 14.Qxc2 dxe5 15.
Rd1 Rc8 16.Qf5 O-O 17.Bg5 Bxg5 18.Nxg5 g6 19.Qxe5 Rc5 20.Ne4 Rc4 21.Nf6+ 
Kg7 22.Ne8+ Kh6 23.Qg7+ Kg5 24.Qxf8 Qd7 25.Nd6 Rg4 26.Nxf7+ Kh4 27.Qh6# 
1-0

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "5"]
[White "Botto, Dardo"]
[Black "Mundell, Peter"]
[Result "0-1"]
[ECO "B62"]
[EventDate "1975.??.??"]
[PlyCount "33"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd3 Bd7 8.O-O-O
a6 9.Nb3 Qc7 10.Be2 Rc8 11.f4 Nb4 12.Qe3 Nxa2+ 13.Kd2 Nxc3 14.bxc3 Nxe4+ 
15.Qxe4 Qxc3+ 16.Kc1 Qxb3 17.Rd3 0-1

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "5"]
[White "Bravo, Hector"]
[Black "Tosan, Felipe"]
[Result "1/2-1/2"]
[ECO "B39"]
[EventDate "1975.??.??"]
[PlyCount "72"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Bg7 6.Be3 Nf6 7.Nc3 Ng4 8.Qxg4 
Nxd4 9.Qd1 Ne6 10.Rc1 O-O 11.Be2 a6 12.O-O d6 13.Qd2 Bd7 14.Bh6 b5 15.Bxg7
Nxg7 16.Qh6 Kh8 17.Qe3 f5 18.Nd5 Be6 19.cxb5 Bxd5 20.exd5 axb5 21.Bxb5 
Rxa2 22.b4 f4 23.Qc3 Qb6 24.Bd3 f3 25.g3 Qb7 26.Be4 Ra4 27.Rb1 Rb8 28.Qxf3
Rxb4 29.Rxb4 Qxb4 30.Rb1 Qxb1+ 31.Bxb1 Rxb1+ 32.Kg2 Kg8 33.Qe4 Rb7 34.g4 
e5 35.h4 Rf7 36.Qa4 Kf8 1/2-1/2

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "5"]
[White "Gomez Baillo, Jorge"]
[Black "Villarreal, Jose Felix"]
[Result "0-1"]
[ECO "C06"]
[EventDate "1975.??.??"]
[PlyCount "84"]

1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 c5 6.c3 Nc6 7.Ne2 Qb6 8.Nf3 cxd4
9.cxd4 f6 10.exf6 Nxf6 11.O-O Bd6 12.Nf4 O-O 13.Re1 Bd7 14.Nxe6 Rfe8 15.
Nf4 Rxe1+ 16.Nxe1 Nxd4 17.Be3 Bxf4 18.Bxf4 Bg4 19.Qd2 Nc6 20.h3 Bh5 21.Be3
d4 22.Bg5 Rf8 23.Bc4+ Bf7 24.Bxf7+ Rxf7 25.Bxf6 Rxf6 26.Nf3 Qc5 27.Qe2 Qd5
28.Rd1 Re6 29.Qc2 Rd6 30.a3 Rd8 31.Rd3 Ne5 32.Nxe5 Qxe5 33.Qb3+ Kh8 34.
Qxb7 Qe1+ 35.Kh2 Qe5+ 36.g3 Qe2 37.Rf3 h6 38.Rf7 d3 39.Kg2 d2 40.Rxg7 Qd3 
41.Kh2 d1=Q 42.Qf7 Q3b1 0-1

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "5"]
[White "Pantoja, Abel"]
[Black "Christiansen, Larry"]
[Result "0-1"]
[ECO "E91"]
[EventDate "1975.??.??"]
[PlyCount "60"]

1.d4 Nf6 2.c4 c5 3.d5 g6 4.Nc3 Bg7 5.e4 d6 6.Nf3 O-O 7.Be2 e6 8.O-O Re8 9.
Re1 exd5 10.exd5 Bg4 11.h3 Bxf3 12.Bxf3 Rxe1+ 13.Qxe1 Nbd7 14.Be3 a6 15.a4
Qb6 16.Rb1 Qb4 17.Bd2 Qxc4 18.b3 Qh4 19.Qc1 Ne5 20.Be2 Ne4 21.Nxe4 Qxe4 
22.Bc4 Re8 23.Bf4 Qf5 24.Kh2 h5 25.g3 Nf3+ 26.Kg2 Qe4 27.Kf1 Nd2+ 28.Kg1 
Nxb1 29.Bxd6 Bc3 30.Bxc5 Qxc4 0-1

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "5"]
[White "Sunye Neto, Jaime"]
[Black "Cifuentes, Roberto"]
[Result "1-0"]
[ECO "A38"]
[EventDate "1975.??.??"]
[PlyCount "131"]

1.Nf3 g6 2.c4 Bg7 3.Nc3 Nf6 4.g3 O-O 5.Bg2 c5 6.O-O Nc6 7.d3 d6 8.Rb1 Rb8 
9.a3 a6 10.b4 cxb4 11.axb4 b5 12.cxb5 axb5 13.Qc2 Bg4 14.Be3 Qd7 15.Ng5 
Rfc8 16.Qb3 d5 17.h3 d4 18.Qxf7+ Kh8 19.Qa2 h6 20.Nf7+ Kh7 21.hxg4 dxe3 
22.fxe3 Nxg4 23.Ne4 Qa7 24.Qxa7 Nxa7 25.Bh3 Nxe3 26.Bxc8 Nxf1 27.Be6 Ne3 
28.Rc1 Rb6 29.Nd8 Bd4 30.Kh2 Be5 31.Rc5 Bb8 32.Kg1 Ra6 33.Kf2 Nd1+ 34.Kf3 
Kg7 35.Bb3 Nb2 36.Ne6+ Kh7 37.Rc2 Na4 38.Nc7 Rc6 39.Nxb5 Nxb5 40.Rxc6 Nd4+
41.Kg2 Nxc6 42.b5 Nd4 43.Bxa4 Nxe2 44.b6 Nd4 45.Nc5 Nf5 46.g4 Ne3+ 47.Kf3 
Nd5 48.b7 Nb4 49.Bb5 Nc2 50.Ke4 Kg7 51.Nd7 Bd6 52.b8=Q Bxb8 53.Nxb8 Kf6 
54.Kf4 Nd4 55.Nd7+ Ke6 56.Ba4 Ne2+ 57.Ke3 Nc3 58.Nc5+ Kd5 59.d4 e5 60.Bb3+
Kc6 61.Ne4 exd4+ 62.Kxd4 Ne2+ 63.Ke3 Ng1 64.Kf2 Nh3+ 65.Kg3 Ng1 66.Bc4 1-0

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "6"]
[White "Bravo, Hector"]
[Black "Botto, Dardo"]
[Result "1-0"]
[ECO "B78"]
[EventDate "1975.??.??"]
[PlyCount "81"]

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.h4 Rc8 11.Bb3 h5 12.O-O-O Ne5 13.Bh6 Bxh6 14.Qxh6 Rxc3 
15.bxc3 Qa5 16.g4 Qxc3 17.Kb1 a5 18.gxh5 a4 19.hxg6 axb3 20.cxb3 Nd3 21.
Rh2 Rc8 22.Qe3 Ne5 23.gxf7+ Kxf7 24.Qe2 Nh5 25.Qf2 Nf4 26.h5 Ned3 27.Qe3 
e5 28.Nf5 Bxf5 29.exf5 d5 30.h6 d4 31.Qg1 Rg8 32.Qf1 Qc8 33.Rc2 Qxf5 34.
Ka1 Nb4 35.Rc7+ Kg6 36.Qg1+ Kxh6 37.Qxg8 Nc2+ 38.Rxc2 Qxc2 39.Rh1+ Nh5 40.
Qh8+ Kg6 41.Qxh5+ 1-0

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "6"]
[White "Christiansen, Larry"]
[Black "Gomez Baillo, Jorge"]
[Result "0-1"]
[ECO "B30"]
[EventDate "1975.??.??"]
[PlyCount "78"]

1.e4 c5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 bxc6 5.O-O d5 6.d3 Bg4 7.Nbd2 e6 8.Qe1 
Bd6 9.b3 Ne7 10.h3 Bxf3 11.Nxf3 Ng6 12.Bb2 O-O 13.e5 Be7 14.Qe3 Qc7 15.
Rae1 Qa5 16.a3 Bd8 17.Nh2 Bb6 18.Qc1 Ba7 19.Kh1 Qd8 20.f4 Qh4 21.f5 exf5 
22.Rxf5 Rae8 23.Qd1 h6 24.Ref1 Re6 25.Ng4 Bb8 26.d4 Ba7 27.c3 Nh8 28.Bc1 
cxd4 29.cxd4 Rg6 30.Be3 Qe7 31.b4 a5 32.Qd2 axb4 33.axb4 Rb8 34.Bxh6 Rxg4 
35.hxg4 Qh4+ 36.Kg1 Qxh6 37.Qf2 Rxb4 38.Rd1 Bxd4 39.Rxd4 Rb1+ 0-1

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "6"]
[White "Cifuentes, Roberto"]
[Black "Pantoja, Abel"]
[Result "1-0"]
[ECO "C78"]
[EventDate "1975.??.??"]
[PlyCount "55"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Bc5 6.Bxc6 dxc6 7.Nxe5 Nxe4 8.
Qf3 Ng5 9.Qg3 O-O 10.d3 f6 11.Bxg5 fxg5 12.c3 h5 13.d4 Bd6 14.f4 Qf6 15.
Qxg5 Qxg5 16.fxg5 Rxf1+ 17.Kxf1 h4 18.Nd2 Bf5 19.Ndf3 h3 20.Re1 Rf8 21.Kf2
hxg2 22.Kxg2 c5 23.Nh4 cxd4 24.cxd4 Kh7 25.g6+ Kh6 26.Nf7+ Kh5 27.Nxf5 Bb4
28.Re6 1-0

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "6"]
[White "Mundell, Peter"]
[Black "Sunye Neto, Jaime"]
[Result "0-1"]
[ECO "E16"]
[EventDate "1975.??.??"]
[PlyCount "76"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Bb4+ 6.Bd2 Be7 7.Nc3 O-O 8.Qc2 c5
9.dxc5 bxc5 10.O-O Nc6 11.Rfd1 d5 12.cxd5 exd5 13.a3 h6 14.Bf4 Qa5 15.Bd2 
Qb6 16.e3 Qc7 17.Na2 Na5 18.Be1 Rac8 19.b3 Nc6 20.Rac1 Rfd8 21.b4 cxb4 22.
Nxb4 Qb6 23.Nxc6 Rxc6 24.Qa2 Rxc1 25.Rxc1 Ba6 26.Rb1 Qc7 27.Nd4 Bd3 28.Rd1
Bc4 29.Rc1 Qd6 30.Qb2 Qxa3 31.Qxa3 Bxa3 32.Ra1 Bc5 33.h4 Rb8 34.Nc6 Rc8 
35.Nxa7 Ra8 36.Ra5 Bb6 37.Bxd5 Bxd5 38.Bc3 Bxa5 0-1

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "6"]
[White "Tosan, Felipe"]
[Black "Villarreal, Jose Felix"]
[Result "0-1"]
[ECO "C00"]
[EventDate "1975.??.??"]
[PlyCount "88"]

1.e4 e6 2.Qe2 Nc6 3.c3 d5 4.d3 Nf6 5.g3 e5 6.Bg2 dxe4 7.dxe4 Bc5 8.Be3 Qe7
9.Bxc5 Qxc5 10.Nf3 a5 11.Nbd2 O-O 12.O-O a4 13.Qc4 Qb6 14.b4 axb3 15.axb3 
Be6 16.Qe2 Qc5 17.Qd3 Rad8 18.Qc2 Nb4 19.Qb2 Nd3 20.Qc2 Ng4 21.Nb1 Bxb3 
22.Qxb3 Ndxf2 23.Ra2 Nh3+ 24.Kh1 Ngf2+ 25.Raxf2 Nxf2+ 26.Kg1 Nxe4+ 27.Kh1 
Nf2+ 28.Kg1 Rd1 29.Qc2 Ng4+ 30.Kh1 Ne3 31.Qe2 Rxf1+ 32.Bxf1 Rd8 33.Nfd2 f5
34.Qb5 Qxb5 35.Bxb5 c6 36.Be2 Kf7 37.Kg1 e4 38.Kf2 Nd5 39.Nc4 Kf6 40.h4 
Ra8 41.Ne3 Ra1 42.Nxd5+ cxd5 43.Nd2 Ra3 44.c4 e3+ 0-1

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "7"]
[White "Botto, Dardo"]
[Black "Tosan, Felipe"]
[Result "1/2-1/2"]
[ECO "B77"]
[EventDate "1975.??.??"]
[PlyCount "81"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Be3 Nf6 7.f3 Nc6 8.Bc4 
O-O 9.Qd2 Bd7 10.h4 Qb8 11.Bb3 Rc8 12.h5 Nxh5 13.Nd5 Re8 14.g4 Nf6 15.Nxc6
bxc6 16.Nxf6+ exf6 17.Qh2 Be6 18.Qxh7+ Kf8 19.O-O-O Bxb3 20.axb3 a5 21.e5 
fxe5 22.Bh6 Bxh6+ 23.Qxh6+ Ke7 24.Qg5+ Ke6 25.f4 Qd8 26.f5+ Kd7 27.Rxd6+ 
Kxd6 28.Rd1+ Kc7 29.Rxd8 Raxd8 30.fxg6 fxg6 31.Qxg6 e4 32.Qf7+ Kb6 33.c4 
e3 34.c5+ Ka6 35.Qc7 Rb8 36.Qxc6+ Ka7 37.Qd7+ Ka6 38.Qc6+ Ka7 39.Qd7+ Ka6 
40.Qc6+ Ka7 41.Qd7+ 1/2-1/2

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "7"]
[White "Gomez Baillo, Jorge"]
[Black "Cifuentes, Roberto"]
[Result "1/2-1/2"]
[ECO "C44"]
[EventDate "1975.??.??"]
[PlyCount "61"]

1.e4 e5 2.Nf3 Nc6 3.c3 d5 4.Qa4 Bd7 5.exd5 Nd4 6.Qd1 Nxf3+ 7.Qxf3 Nf6 8.
Bc4 Bd6 9.d3 Bg4 10.Qg3 Qd7 11.h3 e4 12.Bf4 Bxf4 13.Qxf4 Bf5 14.dxe4 Bxe4 
15.O-O O-O-O 16.Na3 Bxd5 17.Rad1 Qc6 18.Bxd5 Rxd5 19.Nc2 Qd7 20.Rxd5 Qxd5 
21.c4 Qe4 22.Qxe4 Nxe4 23.Re1 Re8 24.f3 Nd6 25.Rxe8+ Nxe8 26.Kf2 Kd7 27.
Ke3 Nd6 28.b3 c5 29.Kf4 Ke6 30.Ne3 b5 31.g4 1/2-1/2

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "7"]
[White "Pantoja, Abel"]
[Black "Mundell, Peter"]
[Result "0-1"]
[ECO "B57"]
[EventDate "1975.??.??"]
[PlyCount "84"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bc4 Qb6 7.Nb3 e6 8.Be3 
Qc7 9.O-O a6 10.a4 b6 11.Qe2 Be7 12.Rad1 O-O 13.Nc1 Nb4 14.Bb3 Bb7 15.f3 
d5 16.exd5 Nbxd5 17.Nxd5 Nxd5 18.Bd4 Bd6 19.h3 Bc5 20.c3 Qe7 21.Qf2 Rac8 
22.Nd3 Bxd4 23.Qxd4 Qc7 24.Rfe1 Rfd8 25.Qh4 b5 26.Ne5 Nf6 27.Ng4 Nxg4 28.
Qxg4 Qb6+ 29.Kh2 Rxd1 30.Rxd1 bxa4 31.Qxa4 h6 32.Rd4 Qc7+ 33.Kh1 Qg3 34.
Qa5 Qe1+ 35.Kh2 Qe2 36.Ba2 Bxf3 37.Kg3 Qxg2+ 38.Kf4 g5+ 39.Ke5 Kg7 40.Kd6 
Qg3+ 41.Kd7 Qb8 42.Rb4 Bc6+ 0-1

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "7"]
[White "Sunye Neto, Jaime"]
[Black "Bravo, Hector"]
[Result "1-0"]
[ECO "D32"]
[EventDate "1975.??.??"]
[PlyCount "93"]

1.Nf3 d5 2.d4 c5 3.c4 e6 4.cxd5 exd5 5.Nc3 Nc6 6.e3 Nf6 7.Be2 Be7 8.dxc5 
Bxc5 9.O-O O-O 10.b3 Be6 11.Bb2 Qe7 12.Nb5 Rfd8 13.Rc1 Ne4 14.Nbd4 Rac8 
15.Nxc6 bxc6 16.Nd4 Bd7 17.Ba6 Rc7 18.Bd3 Bd6 19.Rc2 Be5 20.Qa1 Qh4 21.Nf3
Bxb2 22.Qxb2 Qe7 23.Qe5 Qxe5 24.Nxe5 Be8 25.Rfc1 Rdc8 26.Nf3 Nd6 27.Nd4 
Kf8 28.Ba6 Rb8 29.Rc5 Rb6 30.Be2 Nb7 31.Rxd5 Re7 32.Rf5 c5 33.Nf3 a5 34.
Nd2 a4 35.Bf3 axb3 36.Nxb3 c4 37.Nd4 Rb2 38.h3 Rxa2 39.Bxb7 Rxb7 40.Rxc4 
Ra8 41.Rh5 h6 42.Rhc5 Rb1+ 43.Kh2 Rb2 44.Rc2 Rxc2 45.Rxc2 Ra6 46.Rc8 g6 
47.Nb5 1-0

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "7"]
[White "Villarreal, Jose Felix"]
[Black "Christiansen, Larry"]
[Result "1-0"]
[ECO "B23"]
[EventDate "1975.??.??"]
[PlyCount "97"]

1.e4 c5 2.Nc3 e6 3.f4 d5 4.d3 dxe4 5.dxe4 Qxd1+ 6.Nxd1 Nc6 7.Nf3 Nf6 8.Nf2
Bd7 9.c3 h5 10.Be3 O-O-O 11.O-O-O Be7 12.Be2 e5 13.Nxe5 Nxe5 14.fxe5 Ng4 
15.Nxg4 hxg4 16.Bf4 Be6 17.Kc2 Rxd1 18.Rxd1 Bd8 19.b3 Bc7 20.Rf1 a6 21.Bg3
Kd7 22.Kd3 b5 23.Kc2 Ke7 24.a4 bxa4 25.bxa4 c4 26.Rd1 Rc8 27.Rd5 Bb8 28.
Rd1 g5 29.Rb1 Kd7 30.Rb6 a5 31.Rb5 Bc7 32.Rd5+ Ke7 33.Rc5 Bb6 34.Rxc8 Bxc8
35.Bxc4 Bb7 36.Bd5 Ba6 37.c4 Bc8 38.Be1 Bd7 39.Kb3 Bd4 40.Bxa5 Bxe5 41.Bb6
Bxh2 42.Bb7 f5 43.exf5 Bxf5 44.a5 Bb8 45.a6 Bd3 46.a7 Bxa7 47.Bxa7 Kd7 48.
Be3 Kc7 49.Bd5 1-0

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "8"]
[White "Botto, Dardo"]
[Black "Sunye Neto, Jaime"]
[Result "0-1"]
[ECO "B42"]
[EventDate "1975.??.??"]
[PlyCount "58"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 Qc7 6.c4 g6 7.Nc3 Bg7 8.Be3 Ne7
9.Qd2 O-O 10.O-O d6 11.Rac1 Nbc6 12.Be2 Ne5 13.Rfd1 f5 14.f4 Nf7 15.exf5 
gxf5 16.Bf3 Bd7 17.Qf2 Rac8 18.Kh1 Qb8 19.b3 b5 20.cxb5 axb5 21.Ndxb5 Bxb5
22.Ba7 Qc7 23.Nxb5 Qxc1 24.Be3 Qb2 25.Rd2 Rc1+ 26.Bd1 Nd5 27.g3 Qb1 28.
Rxd5 Rxd1+ 29.Rxd1 Qxd1+ 0-1

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "8"]
[White "Bravo, Hector"]
[Black "Pantoja, Abel"]
[Result "1/2-1/2"]
[ECO "C78"]
[EventDate "1975.??.??"]
[PlyCount "91"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Bc5 6.Nxe5 Nxe5 7.d4 Qe7 8.dxc5
Qxc5 9.Bb3 O-O 10.Be3 Qe7 11.f3 d6 12.Nd2 Be6 13.Qe2 Bxb3 14.axb3 Ng6 15.
Qf2 Nh5 16.Ra5 Nhf4 17.Kh1 b5 18.Rfa1 f5 19.Bxf4 Nxf4 20.Qe3 fxe4 21.Nxe4 
d5 22.Qc5 Qe6 23.Ng3 h5 24.Qf2 h4 25.Nf1 Qg6 26.g3 hxg3 27.hxg3 Qh5+ 28.
Nh2 Nh3 29.Qg2 Rf6 30.Rxb5 Raf8 31.Rb4 Ng5 32.Rh4 Qg6 33.f4 Ne4 34.Ng4 Rf5
35.Qh2 Kf7 36.Kg2 Ke7 37.Ne3 Rg5 38.f5 Rxg3+ 39.Kh1 Rxf5 40.Nxf5+ Qxf5 41.
Qe2 Rh3+ 42.Rxh3 Qxh3+ 43.Kg1 Qg3+ 44.Qg2 Qe3+ 45.Kh1 Nf2+ 46.Kg1 1/2-1/2

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "8"]
[White "Cifuentes, Roberto"]
[Black "Villarreal, Jose Felix"]
[Result "0-1"]
[ECO "A97"]
[EventDate "1975.??.??"]
[PlyCount "160"]

1.c4 f5 2.d4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 d6 6.O-O O-O 7.Nc3 Qe8 8.Bg5 h6 
9.Bxf6 Bxf6 10.e4 Qg6 11.exf5 Qxf5 12.Qb1 Qh5 13.Qe4 Nc6 14.d5 exd5 15.
Qxd5+ Qf7 16.Rae1 Bg4 17.Nd2 Kh8 18.f4 Qd7 19.Nf3 Rae8 20.Qd2 Bf5 21.Nd5 
Bd8 22.b3 Bg6 23.Kh1 Rxe1 24.Rxe1 Re8 25.Rxe8+ Qxe8 26.Qe3 Qxe3 27.Nxe3 
Ne7 28.Nd4 c6 29.Nf3 Bb6 30.Nd1 Bc5 31.g4 Bc2 32.Nc3 Bb4 33.Ne2 Bb1 34.a4 
Bc2 35.Ned4 Bd1 36.Bf1 c5 37.Be2 Bxe2 38.Nxe2 Nc6 39.Nc1 Na5 40.Ng1 Kg8 
41.Kg2 Bd2 42.Nge2 Kf7 43.Kf3 g6 44.Ke4 Ke6 45.h3 a6 46.f5+ gxf5+ 47.gxf5+
Kf6 48.Kd5 Kxf5 49.Kxd6 Bb4 50.Kd5 Ba3 51.Nd3 Nxb3 52.Ng3+ Kg5 53.Ne4+ Kh4
54.Nexc5 Na5 55.Nf4 Bc1 56.Nfe6 Kxh3 57.Nd8 b6 58.Nd7 Be3 59.c5 bxc5 60.
Nxc5 h5 61.Nd3 Kg3 62.Ke4 Nc4 63.Nc6 Bg5 64.Nd4 Nd2+ 65.Kf5 Be3 66.Nc2 Nc4
67.Ke4 Bb6 68.Nf4 Nd2+ 69.Kf5 h4 70.Nh5+ Kf3 71.Ne1+ Kf2 72.Nd3+ Ke3 73.
Nb4 Kf3 74.Nd3 Bc7 75.Ne1+ Kf2 76.Nd3+ Ke3 77.Nb4 Kf3 78.Nf6 h3 79.Ng4 Nc4
80.Nd5 Bg3 0-1

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "8"]
[White "Mundell, Peter"]
[Black "Gomez Baillo, Jorge"]
[Result "0-1"]
[ECO "A41"]
[EventDate "1975.??.??"]
[PlyCount "74"]

1.d4 d6 2.c4 g6 3.g3 Bg7 4.Bg2 Nd7 5.Nf3 e5 6.e4 Ne7 7.Nc3 O-O 8.O-O Nc6 
9.Be3 exd4 10.Nxd4 Nde5 11.Nxc6 bxc6 12.Qe2 Ba6 13.Rfd1 Bxc4 14.Qc2 Be6 
15.b3 Bg4 16.Rf1 Bf3 17.Rac1 f5 18.Bxf3 Nxf3+ 19.Kg2 fxe4 20.Qxe4 Qd7 21.
Ne2 c5 22.Nf4 Ne5 23.Rfd1 Qf7 24.Qd5 Rae8 25.Qxf7+ Rxf7 26.Nd5 Ng4 27.Re1 
Nxe3+ 28.Rxe3 Rxe3 29.Nxe3 Bd4 30.Re1 Re7 31.Nc2 Rxe1 32.Nxe1 Kf7 33.f4 
Ke6 34.Kf3 Kd5 35.Nc2 c4 36.Ne3+ Bxe3 37.Kxe3 Kc5 0-1

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "8"]
[White "Tosan, Felipe"]
[Black "Christiansen, Larry"]
[Result "0-1"]
[ECO "B25"]
[EventDate "1975.??.??"]
[PlyCount "40"]

1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.f4 d6 6.d3 e6 7.Nf3 Nge7 8.O-O O-O 
9.Qd2 Bd7 10.Qf2 Nd4 11.Nh4 Qc7 12.Nd1 f5 13.Qe3 Rae8 14.c3 Ndc6 15.g4 
fxe4 16.Bxe4 d5 17.Bh1 g5 18.Ng2 gxf4 19.Nxf4 d4 20.cxd4 Bxd4 0-1

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "9"]
[White "Christiansen, Larry"]
[Black "Cifuentes, Roberto"]
[Result "1/2-1/2"]
[ECO "B08"]
[EventDate "1975.??.??"]
[PlyCount "87"]

1.Nf3 g6 2.e4 d6 3.d4 Nf6 4.Nc3 Bg7 5.Be2 Bg4 6.O-O O-O 7.Be3 Bxf3 8.Bxf3 
e5 9.dxe5 dxe5 10.Nd5 Nbd7 11.c3 c6 12.Nxf6+ Nxf6 13.Qxd8 Rfxd8 14.Rfd1 b6
15.a4 h6 16.b4 Bf8 17.Kf1 g5 18.g3 c5 19.b5 Rd6 20.Rxd6 Bxd6 21.h4 g4 22.
Bg2 Kg7 23.f3 Bc7 24.Ke2 a5 25.bxa6 Rxa6 26.c4 gxf3+ 27.Bxf3 Nd7 28.g4 Nf8
29.g5 hxg5 30.Bxg5 Ne6 31.Be3 Nd4+ 32.Kf2 Bd8 33.h5 Bh4+ 34.Kg2 Nc2 35.Rg1
Nxe3+ 36.Kh3+ Kh7 37.Kxh4 Rxa4 38.Kg5 Nxc4 39.Rd1 Ra7 40.Be2 b5 41.Bxc4 
bxc4 42.Rc1 Ra6 43.Rxc4 f6+ 44.Kf5 1/2-1/2

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "9"]
[White "Gomez Baillo, Jorge"]
[Black "Bravo, Hector"]
[Result "1/2-1/2"]
[ECO "C44"]
[EventDate "1975.??.??"]
[PlyCount "82"]

1.e4 e5 2.Nf3 Nc6 3.c3 Nf6 4.d4 Nxe4 5.d5 Nb8 6.Bd3 Nf6 7.Nxe5 Be7 8.O-O 
O-O 9.c4 d6 10.Nf3 Bg4 11.Be3 Nbd7 12.Nbd2 Ne5 13.Be2 Nxf3+ 14.Bxf3 Bf5 
15.Bd4 Nd7 16.Be4 Bxe4 17.Nxe4 Nf6 18.Ng3 Nd7 19.Qb3 b6 20.Qc3 Bf6 21.Nf5 
Bxd4 22.Nxd4 Qf6 23.Rae1 a6 24.Re3 Ne5 25.Ne2 Rfe8 26.Ng3 Ng4 27.Qxf6 Nxf6
28.Rfe1 Rxe3 29.Rxe3 Re8 30.Rxe8+ Nxe8 31.f3 Nf6 32.Kf2 Nd7 33.Ke3 Kf8 34.
Kd4 a5 35.Ne4 Ke7 36.b3 Nb8 37.Nd2 Nd7 38.a3 Nc5 39.b4 axb4 40.axb4 Nd7 
41.Ne4 h6 1/2-1/2

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "9"]
[White "Pantoja, Abel"]
[Black "Botto, Dardo"]
[Result "0-1"]
[ECO "B70"]
[EventDate "1975.??.??"]
[PlyCount "68"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Bc4 Bg7 7.O-O O-O 8.f3 
Nc6 9.Be3 Qb6 10.Bb5 Ng4 11.fxg4 Bxd4 12.Bxd4 Qxd4+ 13.Rf2 Qxd1+ 14.Rxd1 
Bxg4 15.Rdf1 Be6 16.Nd5 Bxd5 17.exd5 Ne5 18.Be2 Rac8 19.c3 Rc5 20.Rd1 b5 
21.Rf4 Rb8 22.h4 a5 23.a3 a4 24.Rb4 Nc4 25.Rd4 Ne3 26.Re4 Nc2 27.Rxb5 
Rbxb5 28.Bxb5 Rxb5 29.Rxa4 Rxb2 30.Ra8+ Kg7 31.a4 Ne3 32.a5 Rxg2+ 33.Kh1 
Ra2 34.a6 Nxd5 0-1

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "9"]
[White "Sunye Neto, Jaime"]
[Black "Tosan, Felipe"]
[Result "1/2-1/2"]
[ECO "E67"]
[EventDate "1975.??.??"]
[PlyCount "33"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.g3 O-O 5.Bg2 d6 6.Nf3 Nbd7 7.O-O e5 8.h3 c6 
9.dxe5 Nxe5 10.Nxe5 dxe5 11.Qxd8 Rxd8 12.Bg5 Rd4 13.b3 Be6 14.Rad1 Rad8 
15.Be3 Rxd1 16.Rxd1 Rxd1+ 17.Nxd1 1/2-1/2

[Event "2nd Pan-American U20"]
[Site "Buenos Aires ARG"]
[Date "1975.04.??"]
[Round "9"]
[White "Villarreal, Jose Felix"]
[Black "Mundell, Peter"]
[Result "1/2-1/2"]
[ECO "B21"]
[EventDate "1975.??.??"]
[PlyCount "24"]

1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 d6 6.Bc4 e6 7.O-O Nf6 8.Qe2 
Qc7 9.Bf4 a6 10.Rac1 b5 11.Bb3 Bb7 12.Rfd1 Rd8 1/2-1/2

