[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "1"]
[White "Campos Moreno, Javier"]
[Black "da Matta, Carlos Eduardo"]
[Result "1-0"]
[ECO "E20"]
[EventDate "1979.??.??"]
[PlyCount "65"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 c5 5.g3 cxd4 6.Nxd4 a6 7.Bg2 Nc6 8.O-O 
O-O 9.a3 Be7 10.b4 d5 11.cxd5 exd5 12.Be3 Re8 13.Rc1 Be6 14.Nxc6 bxc6 15.
Na4 Bd7 16.Qd3 Ng4 17.Bd4 Bg5 18.f4 Bf6 19.Nb6 Bf5 20.Bxf6 Qxb6+ 21.Qd4 
Qb7 22.Bxg7 Re6 23.Bf3 Rg6 24.Be5 Qe7 25.Bxg4 Rxg4 26.Rxc6 Be4 27.Rfc1 Rf8
28.Rc8 h5 29.R1c7 Qh4 30.Rxf8+ Kxf8 31.Rc8+ Ke7 32.Qc5+ Kd7 33.Qc6+ 1-0

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "1"]
[White "Donatti, Alvaro"]
[Black "Masculo, Jose Soares"]
[Result "1-0"]
[ECO "A48"]
[EventDate "1979.??.??"]
[PlyCount "61"]

1.d4 Nf6 2.Nf3 c5 3.e3 g6 4.c3 b6 5.Nbd2 Bg7 6.Bd3 O-O 7.O-O Nc6 8.Re1 d6 
9.e4 Ne8 10.Bb5 Bb7 11.d5 Nb8 12.Nf1 Nc7 13.Be2 e6 14.Ne3 exd5 15.Nxd5 
Nxd5 16.exd5 Nd7 17.Bg5 Nf6 18.c4 Qd7 19.Bd3 b5 20.b3 Rfe8 21.Rb1 Ba6 22.
Qd2 bxc4 23.bxc4 Qa4 24.h3 Nd7 25.Be7 Ne5 26.Rxe5 dxe5 27.d6 f5 28.Bxf5 
gxf5 29.Qd5+ Kh8 30.d7 Rxe7 31.Qxa8+ 1-0

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "1"]
[White "Santacruz, Francisco"]
[Black "Barbero, Gerardo"]
[Result "1-0"]
[ECO "A90"]
[EventDate "1979.??.??"]
[PlyCount "83"]

1.d4 f5 2.c4 e6 3.Nf3 Nf6 4.g3 d5 5.Bg2 c6 6.cxd5 exd5 7.O-O Nbd7 8.Bf4 
Be7 9.Nbd2 O-O 10.Qc2 Ne4 11.Ne5 g5 12.Nxd7 Bxd7 13.Be5 Bf6 14.Nf3 f4 15.
Rad1 Bf5 16.Qc1 fxg3 17.fxg3 h6 18.a3 Qe7 19.Bxf6 Rxf6 20.Ne5 Nd6 21.g4 
Bh7 22.Rxf6 Qxf6 23.Rf1 Qe6 24.Qe3 Rf8 25.Rxf8+ Kxf8 26.Qf3+ Ke8 27.Qc3 
Be4 28.Bf3 Bxf3 29.exf3 Nb5 30.Qd3 a6 31.a4 Nd6 32.Qh7 Kd8 33.b3 Kc8 34.
Qh8+ Kc7 35.Kf2 a5 36.Qa8 b6 37.Qxc6+ Kd8 38.Qxb6+ Ke8 39.Qb8+ Nc8 40.Qc7 
Ne7 41.Qxa5 Nc8 42.Qc7 1-0

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "2"]
[White "Barbero, Gerardo"]
[Black "Campos Moreno, Javier"]
[Result "0-1"]
[ECO "C73"]
[EventDate "1979.??.??"]
[PlyCount "192"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.Bxc6+ bxc6 6.d4 f6 7.O-O Ne7 8.c4 
Ng6 9.Nc3 Be7 10.Be3 O-O 11.Qc2 Bg4 12.Ne1 exd4 13.Bxd4 c5 14.Be3 c6 15.
Nd3 Ne5 16.b3 Nxd3 17.Qxd3 f5 18.f3 fxe4 19.Nxe4 Bf5 20.Rad1 Qe8 21.Bf2 
Rd8 22.Qe3 Qg6 23.Nxc5 Bg5 24.f4 Bg4 25.fxg5 Bxd1 26.Qe6+ Qf7 27.Qxf7+ 
Kxf7 28.Nb7 Rd7 29.Nxd6+ Ke6 30.Ne4 Be2 31.Nc5+ Ke7 32.Nxd7 Kxd7 33.Rc1 
Bg4 34.h3 Bf5 35.Bd4 g6 36.Bf6 Re8 37.Kf2 Re6 38.Bd4 Rd6 39.Be3 Rd3 40.Ke2
Rd6 41.Bc5 Rd3 42.Bb4 Be4 43.Kf2 Ke6 44.Re1 Kf5 45.Ba5 Rd7 46.Re3 Rd3 47.
Re2 Rd7 48.Bd2 Rd3 49.Ke1 Ke5 50.Bc1 Rg3 51.Kf1 Kd4 52.Bb2+ Kd3 53.Bf6 Re3
54.Rb2 Rg3 55.Rf2 Bf5 56.Ke1 Re3+ 57.Kd1 Ke4 58.Be7 Kd4 59.Bd8 Be4 60.Bc7 
Bf5 61.g4 Be4 62.Bb6+ c5 63.Rf8 Rxh3 64.Rd8+ Kc3 65.Ba5+ Kb2 66.Rd2+ Kb1 
67.Rf2 Rg3 68.Bc7 Rg1+ 69.Kd2 Rg2 70.Rxg2 Bxg2 71.Kc3 Kxa2 72.Bd6 Bf3 73.
Bxc5 Bxg4 74.Be7 Bd1 75.c5 Bxb3 76.c6 a5 77.c7 Be6 78.Kd4 Kb3 79.Kc5 a4 
80.Kb6 Kc4 81.Kb7 Kd5 82.c8=Q Bxc8+ 83.Kxc8 Ke6 84.Kd8 Kf5 85.Ke8 a3 86.
Bxa3 Kxg5 87.Ke7 Kf5 88.Kd6 h5 89.Kd5 h4 90.Bd6 g5 91.Kd4 Kg4 92.Ke3 Kh3 
93.Kf2 g4 94.Bb8 g3+ 95.Bxg3 hxg3+ 96.Kg1 g2 0-1

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "2"]
[White "Masculo, Jose Soares"]
[Black "Santacruz, Francisco"]
[Result "1-0"]
[ECO "E62"]
[EventDate "1979.??.??"]
[PlyCount "127"]

1.g3 g6 2.Bg2 Bg7 3.c4 Nf6 4.Nc3 O-O 5.Nf3 d6 6.O-O c6 7.d4 Bg4 8.h3 Bxf3 
9.Bxf3 Nbd7 10.Qb3 Qc7 11.Be3 Rfe8 12.d5 c5 13.Bg2 a6 14.a4 Rab8 15.Qc2 
Ne5 16.b3 Rf8 17.Bc1 Ne8 18.Bb2 Nd7 19.h4 Nef6 20.Rae1 Rbe8 21.Bh3 Ne5 22.
f4 Neg4 23.e4 h5 24.Nd1 Nh6 25.Nf2 Nfg4 26.Bxg7 Kxg7 27.Bxg4 hxg4 28.Nd3 
Qd7 29.Qh2 f5 30.e5 Rh8 31.Qb2 Kh7 32.Rf2 Ref8 33.Rfe2 Re8 34.exd6 exd6 
35.Qf6 Rxe2 36.Rxe2 Re8 37.Re6 Rxe6 38.dxe6 Qe8 39.e7 Ng8 40.Qxd6 Nxe7 41.
Nxc5 Nc6 42.Ne6 Kh6 43.c5 a5 44.Kf2 Qh8 45.Qf8+ Qxf8 46.Nxf8 Kg7 47.Ne6+ 
Kf6 48.Nc7 Nd4 49.b4 axb4 50.Nd5+ Ke6 51.Nxb4 Kd7 52.Nd3 Ne6 53.Ne5+ Ke7 
54.c6 bxc6 55.Nxc6+ Kd6 56.Ne5 Ng7 57.Nxg6 Kc5 58.Ne7 Kb4 59.Ke3 Kxa4 60.
Kd4 Kb5 61.Ke5 Kc5 62.Nxf5 Nh5 63.Nh6 Nxg3 64.Nxg4 1-0

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "2"]
[White "da Matta, Carlos Eduardo"]
[Black "Hernandez, Rodrigo"]
[Result "0-1"]
[ECO "D71"]
[EventDate "1979.??.??"]
[PlyCount "86"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nxc3 7.bxc3 c5 8.e3 
O-O 9.Ne2 Nc6 10.O-O Qa5 11.h3 Rd8 12.Qb3 Qa6 13.Re1 cxd4 14.cxd4 e5 15.
Qa3 Qxa3 16.Bxa3 exd4 17.Bxc6 bxc6 18.Nxd4 Bxh3 19.Rac1 Bxd4 20.exd4 Rxd4 
21.Rxc6 Rd2 22.Ra1 Be6 23.Bb4 Rxa2 24.Rxa2 Bxa2 25.Ra6 Bc4 26.Rc6 Bd5 27.
Rd6 Rb8 28.Rxd5 Rxb4 29.Ra5 Rb7 30.g4 Kf8 31.Ra6 Ke8 32.Kg2 Kd8 33.Kg3 Re7
34.g5 Kc8 35.Ra1 Kb7 36.Rh1 a5 37.Rxh7 Kb6 38.f4 Ra7 39.f5 gxf5 40.Kf4 a4 
41.Kxf5 Kc5 42.Kf4 a3 43.g6 Ra4+ 0-1

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "3"]
[White "Donatti, Alvaro"]
[Black "da Matta, Carlos Eduardo"]
[Result "0-1"]
[ECO "D60"]
[EventDate "1979.??.??"]
[PlyCount "52"]

1.c4 e6 2.Nc3 d5 3.d4 Be7 4.Nf3 Nf6 5.Bg5 Nbd7 6.e3 O-O 7.cxd5 exd5 8.Bd3 
Re8 9.O-O Nf8 10.Qa4 c6 11.b4 Ne4 12.Bxe7 Qxe7 13.Rfc1 Nxf2 14.Bxh7+ Nxh7 
15.Kxf2 Qxe3+ 16.Kg3 Nf6 17.h4 Nh5+ 18.Kh2 Qf4+ 19.Kg1 Bg4 20.Qd1 Bxf3 21.
Qxf3 Qxd4+ 22.Kf1 Re6 23.Qxh5 Rf6+ 24.Ke1 Qf2+ 25.Kd1 Re8 26.Ne2 Rfe6 0-1

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "3"]
[White "Masculo, Jose Soares"]
[Black "Barbero, Gerardo"]
[Result "1-0"]
[ECO "A07"]
[EventDate "1979.??.??"]
[PlyCount "87"]

1.Nf3 d5 2.g3 c6 3.Bg2 Bg4 4.b3 Nd7 5.Bb2 Ngf6 6.d3 e6 7.Nbd2 Bd6 8.e4 e5 
9.O-O O-O 10.h3 Bh5 11.g4 Bg6 12.Nh4 Nc5 13.Nf5 Bxf5 14.gxf5 Re8 15.Re1 
Qd7 16.Qf3 Rad8 17.Nf1 dxe4 18.dxe4 Qe7 19.Bc1 h6 20.Ng3 Na6 21.a3 Bc5 22.
b4 Bb6 23.Bf1 Nc7 24.c3 Rd7 25.Ra2 Red8 26.Kh2 a6 27.Bc4 Nb5 28.Rg1 Kf8 
29.Be2 Ke8 30.a4 Nd6 31.Qg2 Qf8 32.Ba3 Qh8 33.Rd1 h5 34.f3 h4 35.Nf1 Nh5 
36.Bc1 Nf4 37.Bxf4 exf4 38.Rad2 Qh6 39.Rd3 Qf6 40.Nd2 Qe5 41.Kh1 Nxf5 42.
Nc4 Rxd3 43.Rxd3 Rxd3 44.Nxe5 1-0

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "3"]
[White "Santacruz, Francisco"]
[Black "Hernandez, Rodrigo"]
[Result "0-1"]
[ECO "E73"]
[EventDate "1979.??.??"]
[PlyCount "122"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 h6 7.Be3 e5 8.d5 a5 9.
f3 Na6 10.Qd2 Kh7 11.g4 Ne8 12.h4 Bd7 13.O-O-O Rc8 14.Nh3 Rh8 15.Bd3 Nc5 
16.Bc2 Qe7 17.Rdg1 c6 18.Kb1 Bf8 19.Rh2 Nc7 20.Rgh1 N7a6 21.Rf1 Bg7 22.a3 
Rb8 23.Rd1 Rhd8 24.Qe2 Qe8 25.Nf2 b5 26.dxc6 Bxc6 27.cxb5 Bxb5 28.Nxb5 
Rxb5 29.Bd3 Nxd3 30.Rxd3 Nc5 31.Bxc5 Rxc5 32.Qd2 Qc6 33.Rh1 d5 34.Rc1 d4 
35.g5 Rxc1+ 36.Qxc1 Qxc1+ 37.Kxc1 f6 38.Rb3 fxg5 39.hxg5 hxg5 40.Kd2 Rf8 
41.Ng4 a4 42.Rd3 Rb8 43.Kc2 Rc8+ 44.Kd1 Rb8 45.Kc2 Rc8+ 46.Kd2 Ra8 47.Kc2 
Kg8 48.b3 axb3+ 49.Rxb3 Ra5 50.Rb8+ Bf8 51.Re8 Rxa3 52.Nxe5 Kg7 53.Re6 Kh7
54.Rxg6 d3+ 55.Kc1 Bb4 56.Nxd3 Kxg6 57.Nxb4 Rxf3 58.Kd2 g4 59.Nd3 Rf8 60.
Ke3 g3 61.Ne1 Kg5 0-1

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "4"]
[White "Campos Moreno, Javier"]
[Black "Santacruz, Francisco"]
[Result "1-0"]
[ECO "B47"]
[EventDate "1979.??.??"]
[PlyCount "51"]

1.d4 c5 2.Nf3 e6 3.e4 cxd4 4.Nxd4 a6 5.Nc3 Qc7 6.Be2 Nc6 7.O-O b5 8.Be3 
Bb7 9.a3 Rc8 10.Kh1 Nge7 11.Nb3 Ng6 12.f4 Na5 13.Nxa5 Qxa5 14.Bd4 Qc7 15.
Qd2 Bc6 16.Rae1 Rg8 17.Bh5 Nh8 18.Qf2 g6 19.Bf3 Be7 20.Qg3 Qd8 21.Qh3 f6 
22.f5 gxf5 23.Bh5+ Nf7 24.Nd5 Bxd5 25.exd5 e5 26.Bxe5 1-0

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "4"]
[White "Hernandez, Rodrigo"]
[Black "Donatti, Alvaro"]
[Result "1-0"]
[ECO "B41"]
[EventDate "1979.??.??"]
[PlyCount "71"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Be2 Qc7 6.O-O Nf6 7.Bf3 Nc6 8.Nxc6 
dxc6 9.c4 e5 10.Be3 Be6 11.c5 Qa5 12.Qc2 Be7 13.Nd2 O-O 14.h3 Rfd8 15.Rfc1
Nd7 16.Nc4 Qc7 17.b4 Nf8 18.Nb6 Rab8 19.Be2 Nd7 20.Rd1 Nxb6 21.cxb6 Qc8 
22.Bc5 Rxd1+ 23.Rxd1 Qe8 24.Qb2 f6 25.a4 Rd8 26.Rxd8 Qxd8 27.Bxe7 Qxe7 28.
Qd2 Kf8 29.f4 Ke8 30.f5 Bf7 31.Qc3 Qd6 32.Kf2 Qd4+ 33.Qxd4 exd4 34.Bxa6 
Kd7 35.Bxb7 Bc4 36.a5 1-0

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "4"]
[White "da Matta, Carlos Eduardo"]
[Black "Masculo, Jose Soares"]
[Result "0-1"]
[ECO "A30"]
[EventDate "1979.??.??"]
[PlyCount "80"]

1.Nf3 c5 2.c4 g6 3.g3 Bg7 4.Bg2 Nc6 5.O-O e6 6.d3 Nge7 7.Nbd2 O-O 8.Rb1 d5
9.a3 a5 10.b3 b6 11.e4 Bb7 12.Bb2 dxe4 13.dxe4 Bxb2 14.Rxb2 Nd4 15.Nxd4 
Qxd4 16.Qc2 Rfd8 17.Re1 e5 18.Nf3 Qd6 19.Qc3 Nc6 20.Rd2 Nd4 21.Nxd4 cxd4 
22.Qb2 Rdc8 23.a4 Rc7 24.Rd3 Rf8 25.f4 f6 26.g4 Rd8 27.f5 Rg7 28.Kf2 gxf5 
29.gxf5 Kh8 30.Bf3 Rdg8 31.Rdd1 Qf8 32.Qd2 Rg5 33.Rg1 Qh6 34.Rh1 Qh3 35.
Rdf1 Rg2+ 36.Bxg2 Rxg2+ 37.Ke1 Rxd2 38.Kxd2 Qe3+ 39.Kd1 Bxe4 40.Rhg1 Qxb3+
0-1

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "5"]
[White "Barbero, Gerardo"]
[Black "da Matta, Carlos Eduardo"]
[Result "1-0"]
[ECO "D05"]
[EventDate "1979.??.??"]
[PlyCount "81"]

1.d4 d5 2.Nf3 Nf6 3.e3 e6 4.Bd3 Be7 5.O-O O-O 6.b3 c5 7.Bb2 Nc6 8.a3 b6 9.
Nbd2 Bb7 10.Ne5 Nxe5 11.dxe5 Nd7 12.f4 g6 13.c4 dxc4 14.Nxc4 Ba6 15.Be4 
Rc8 16.Rf2 Bxc4 17.bxc4 Re8 18.Rd2 Rc7 19.Qa4 Qc8 20.Rad1 Rd8 21.Kf2 Nf8 
22.Ke2 Rcd7 23.Bc6 Rxd2+ 24.Rxd2 Rxd2+ 25.Kxd2 Qc7 26.Kc2 h6 27.Be8 g5 28.
g3 Ng6 29.Bc6 Bd8 30.Be4 Nf8 31.Kc1 Nd7 32.Qd1 Nf8 33.Qh5 Kg7 34.Qh3 Qd7 
35.f5 Ng6 36.fxg6 fxg6 37.Qf1 Qa4 38.Qd3 Qe8 39.Kb1 Qf8 40.Bxg6 Qe7 41.Bh5
1-0

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "5"]
[White "Donatti, Alvaro"]
[Black "Campos Moreno, Javier"]
[Result "1/2-1/2"]
[ECO "D05"]
[EventDate "1979.??.??"]
[PlyCount "117"]

1.d4 Nf6 2.Nf3 e6 3.e3 c5 4.Bd3 d5 5.c3 Nc6 6.Nbd2 Bd6 7.O-O O-O 8.dxc5 
Bxc5 9.e4 b6 10.Qe2 Bb7 11.e5 Nd7 12.Nb3 Be7 13.Bc2 Re8 14.Bf4 Nf8 15.Nfd4
Ng6 16.Bg3 Nb8 17.Qg4 Nd7 18.f4 Bc5 19.Nxc5 bxc5 20.Nf3 f5 21.Qh5 Qe7 22.
Ng5 Ngf8 23.Ba4 h6 24.Nf3 Reb8 25.Bh4 Qf7 26.Qxf7+ Kxf7 27.Bf2 Ba6 28.Bc6 
Bxf1 29.Kxf1 a5 30.Bxa8 Rxa8 31.b3 Rb8 32.Ke2 Ng6 33.g3 Ne7 34.Rb1 Nc6 35.
Kd3 Ke7 36.Kc2 g5 37.Rg1 a4 38.Rb1 axb3+ 39.axb3 Ra8 40.Kb2 Rg8 41.Rg1 Kd8
42.h4 g4 43.Ne1 Kc7 44.Nd3 c4 45.bxc4 Rb8+ 46.Kc2 dxc4 47.Nb2 Na5 48.Rd1 
Nb7 49.Nxc4 Ndc5 50.Nd6 Ra8 51.Nxb7 Nxb7 52.Rb1 h5 53.Rb2 Ra1 54.Kd2 Na5 
55.Bb6+ Kc6 56.Bxa5 Rxa5 57.Ke2 Ra3 58.Rd2 Rxc3 59.Rd6+ 1/2-1/2

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "5"]
[White "Masculo, Jose Soares"]
[Black "Hernandez, Rodrigo"]
[Result "1-0"]
[ECO "A36"]
[EventDate "1979.??.??"]
[PlyCount "92"]

1.g3 c5 2.Bg2 g6 3.c4 Bg7 4.Nc3 Nc6 5.a3 d6 6.d3 e6 7.Bd2 Nge7 8.Rb1 a5 9.
h4 h5 10.Nh3 Rb8 11.Qc1 b6 12.Nf4 Bb7 13.Nb5 Nf5 14.Bc3 Ncd4 15.Bxb7 Rxb7 
16.Nxd4 cxd4 17.Bd2 Qa8 18.O-O Rc7 19.Qd1 g5 20.hxg5 h4 21.g4 h3 22.Kh2 
Be5 23.Rg1 Nh4 24.Rg3 Ng6 25.e3 dxe3 26.fxe3 d5 27.Qf3 Qa6 28.Bc3 Bxc3 29.
bxc3 Ne5 30.Qe2 dxc4 31.d4 Nd3 32.Rxh3 Rxh3+ 33.Kxh3 Kd7 34.Rd1 Qb5 35.g6 
fxg6 36.Nxd3 cxd3 37.Qxd3 Qg5 38.Kg3 Kd6 39.Rh1 b5 40.Rh8 Rf7 41.Ra8 Qf6 
42.Ra6+ Ke7 43.Ra7+ Kf8 44.Rxf7+ Qxf7 45.Qxb5 Qc7+ 46.Kg2 Kg8 1-0

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "6"]
[White "Campos Moreno, Javier"]
[Black "Masculo, Jose Soares"]
[Result "1/2-1/2"]
[ECO "E20"]
[EventDate "1979.??.??"]
[PlyCount "122"]

1.d4 Nf6 2.c4 c5 3.Nf3 cxd4 4.Nxd4 e6 5.Nc3 Bb4 6.g3 Ne4 7.Qd3 Qa5 8.Nb3 
Nxc3 9.Bd2 Ne4 10.Qxe4 Bxd2+ 11.Nxd2 O-O 12.Bg2 Nc6 13.Qe3 d5 14.cxd5 exd5
15.Qc3 Be6 16.Qxa5 Nxa5 17.O-O Rac8 18.Rac1 b6 19.Nf3 Nc6 20.Rfd1 Rfd8 21.
Rd2 Kf8 22.Rcd1 Ke8 23.h4 a5 24.b3 b5 25.Ng5 h6 26.Nh3 a4 27.bxa4 bxa4 28.
Nf4 Ne7 29.Nxd5 Nxd5 30.Bxd5 Bxd5 31.Rxd5 Rxd5 32.Rxd5 Rc2 33.a3 Rxe2 34.
Rd4 Ra2 35.Rxa4 h5 36.Re4+ Kd7 37.Re3 g6 38.Kg2 Kd6 39.Kf3 Kd7 40.Kg2 f6 
41.Kf3 Kd6 42.Rb3 g5 43.Rb6+ Ke7 44.Ra6 Kf7 45.Ra8 Kg6 46.hxg5 fxg5 47.a4 
h4 48.Kg2 Ra3 49.a5 hxg3 50.fxg3 Kh5 51.Kh3 g4+ 52.Kg2 Ra2+ 53.Kg1 Kh6 54.
Kf1 Kg7 55.Ke1 Kh7 56.Kf1 Kg7 57.Ke1 Ra3 58.a6 Ra2 59.Kd1 Kh7 60.Kc1 Kg7 
61.Kb1 Ra5 1/2-1/2

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "6"]
[White "Hernandez, Rodrigo"]
[Black "Barbero, Gerardo"]
[Result "1/2-1/2"]
[ECO "C62"]
[EventDate "1979.??.??"]
[PlyCount "101"]

1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Qxd4 Nc6 5.Bb5 Bd7 6.Bxc6 bxc6 7.c4 f6 8.Nc3 
g6 9.Be3 c5 10.Qd2 Bg7 11.O-O-O Ne7 12.Bh6 O-O 13.Bxg7 Kxg7 14.h4 Bg4 15.
Qf4 Qd7 16.Nd5 Nc6 17.Kb1 Rab8 18.Rd2 Ne5 19.Nxe5 fxe5 20.Qg3 Be6 21.h5 
Bxd5 22.Rxd5 Qf7 23.hxg6 hxg6 24.f3 Rh8 25.Rxh8 Rxh8 26.b3 Rh1+ 27.Kc2 Qe7
28.Rd1 Rh4 29.a3 a5 30.Rb1 Rh8 31.Kc3 Qf7 32.Qg4 Rh2 33.b4 axb4+ 34.axb4 
cxb4+ 35.Rxb4 Rh1 36.Rb8 Rh8 37.Rxh8 Kxh8 38.Qc8+ Kg7 39.Kb4 Kf6 40.Kb5 
Kg5 41.Qg4+ Kh6 42.Qh4+ Kg7 43.Qd8 Kh7 44.Qc8 Kg7 45.Qb7 Kf6 46.Qc6 Kg5 
47.Ka6 Kf4 48.Kb7 Kg3 49.Qxc7 Qe6 50.Qc8 Qf7+ 51.Qc7 1/2-1/2

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "6"]
[White "Santacruz, Francisco"]
[Black "Donatti, Alvaro"]
[Result "1-0"]
[ECO "A53"]
[EventDate "1979.??.??"]
[PlyCount "59"]

1.d4 Nf6 2.Nf3 d6 3.c4 c5 4.Nc3 Nbd7 5.e4 cxd4 6.Nxd4 a6 7.Be2 e6 8.O-O 
Be7 9.Be3 Qc7 10.Rc1 b6 11.b3 Bb7 12.f3 Rc8 13.Qe1 O-O 14.Qf2 Qb8 15.Rfd1 
Rfd8 16.Na4 d5 17.exd5 exd5 18.Nf5 Ba3 19.Rb1 Qe5 20.Ng3 b5 21.Bd4 Qe6 22.
cxb5 Rc2 23.Qf1 axb5 24.Bxb5 Rxa2 25.Re1 Qd6 26.Qd3 Nc5 27.Qe3 Nxa4 28.
bxa4 Ba6 29.Nf5 Qe6 30.Qg5 1-0

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "7"]
[White "Barbero, Gerardo"]
[Black "Donatti, Alvaro"]
[Result "1-0"]
[ECO "A45"]
[EventDate "1979.??.??"]
[PlyCount "45"]

1.d4 Nf6 2.Bg5 e6 3.Nd2 d5 4.Ngf3 Nbd7 5.c4 Be7 6.e3 O-O 7.Bd3 b6 8.Rc1 
Bb7 9.O-O c5 10.Qe2 Rc8 11.Rfd1 cxd4 12.exd4 Re8 13.b3 Nf8 14.Ne5 Ng6 15.
Ndf3 Nd7 16.Bxe7 Qxe7 17.Nxd7 Qxd7 18.Bxg6 hxg6 19.Ne5 Qe7 20.Rc3 dxc4 21.
bxc4 Red8 22.Rh3 Qg5 23.Rh8+ 1-0

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "7"]
[White "Hernandez, Rodrigo"]
[Black "Campos Moreno, Javier"]
[Result "1/2-1/2"]
[ECO "C72"]
[EventDate "1979.??.??"]
[PlyCount "124"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.O-O Bg4 6.h3 h5 7.Bxc6+ bxc6 8.d3 
Qf6 9.Nbd2 Ne7 10.Re1 Bd7 11.Nf1 Ng6 12.d4 Nf4 13.Bxf4 Qxf4 14.Qc1 Qxc1 
15.Raxc1 f6 16.Ne3 g6 17.c4 Rb8 18.Re2 exd4 19.Nxd4 c5 20.Nb3 Bh6 21.Rc3 
Bxe3 22.Rcxe3 Be6 23.Rc2 Kd7 24.f4 Rb4 25.Nd2 Rhb8 26.b3 a5 27.Rcc3 a4 28.
f5 Bf7 29.fxg6 Bxg6 30.Rg3 Rg8 31.Kf2 axb3 32.axb3 Rbb8 33.Ke3 Ra8 34.Kf4 
Ra2 35.Nf3 Re2 36.Re3 Rf2 37.Rd3 Ke6 38.Rd2 Rf1 39.Ra2 Bf7 40.Rxg8 Bxg8 
41.Ra7 Kd7 42.Ra8 Bf7 43.Kf5 Rf2 44.Kxf6 Rxg2 45.Rf8 Be6 46.Ng5 Rf2+ 47.
Kg7 Rh2 48.Rf3 h4 49.Kg6 c6 50.Kh5 d5 51.exd5 cxd5 52.Nxe6 Kxe6 53.cxd5+ 
Kxd5 54.Kxh4 Rc2 55.Kg5 Ke6 56.h4 c4 57.bxc4 Rxc4 58.h5 Rc1 59.h6 Rg1+ 60.
Kh5 Rh1+ 61.Kg6 Rg1+ 62.Kh7 Ke7 1/2-1/2

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "7"]
[White "da Matta, Carlos Eduardo"]
[Black "Santacruz, Francisco"]
[Result "1/2-1/2"]
[ECO "B14"]
[EventDate "1979.??.??"]
[PlyCount "73"]

1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 e6 6.Nf3 Be7 7.Bd3 O-O 8.O-O 
dxc4 9.Bxc4 Nbd7 10.a3 a6 11.Bg5 b5 12.Ba2 Bb7 13.Bb1 Re8 14.Qd3 Nf8 15.
Ne5 Nd5 16.Bd2 Nxc3 17.bxc3 Qd5 18.Qh3 Qd8 19.Re1 Bd5 20.Bd3 f6 21.Nf3 Bd6
22.Be4 Qd7 23.Bxd5 exd5 24.Qxd7 Nxd7 25.Rxe8+ Rxe8 26.a4 Rb8 27.axb5 axb5 
28.Rb1 Kf7 29.Kf1 Nf8 30.Ne1 Ne6 31.Nc2 Nc7 32.Bc1 Ra8 33.Ra1 Rxa1 34.Nxa1
b4 35.cxb4 Bxb4 36.Nc2 Bc3 37.Ke2 1/2-1/2

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "8"]
[White "Barbero, Gerardo"]
[Black "Santacruz, Francisco"]
[Result "1-0"]
[ECO "B19"]
[EventDate "1979.??.??"]
[PlyCount "93"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.h4 h6 7.Nf3 Nd7 8.h5 Bh7
9.Bd3 Bxd3 10.Qxd3 Ngf6 11.Bd2 e6 12.O-O-O Qc7 13.Qe2 Bd6 14.Nf5 O-O-O 15.
Nxd6+ Qxd6 16.c4 Kb8 17.g3 Ka8 18.Bc3 Qc7 19.Kb1 Rhe8 20.Ka1 c5 21.b3 Qc6 
22.Rh4 Qa6 23.Kb1 Nd5 24.Be1 Ne7 25.Rf4 f6 26.Re4 Nc8 27.Bc3 Nb8 28.Re1 
cxd4 29.Nxd4 e5 30.Nb5 Qc6 31.f4 Nd6 32.Nxd6 Rxd6 33.fxe5 Rde6 34.Qd3 Nd7 
35.Rd4 Nb8 36.Rd5 a6 37.Qd1 fxe5 38.Rexe5 Rxe5 39.Bxe5 Qc8 40.Bxg7 Qh3 41.
Bxh6 Qxg3 42.Bd2 Nc6 43.h6 Rh8 44.Qh5 Nd4 45.Qg5 Qd3+ 46.Kb2 Qc2+ 47.Ka3 
1-0

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "8"]
[White "Masculo, Jose Soares"]
[Black "Donatti, Alvaro"]
[Result "1-0"]
[ECO "E18"]
[EventDate "1979.??.??"]
[PlyCount "103"]

1.Nf3 Nf6 2.g3 e6 3.Bg2 d5 4.O-O Be7 5.c4 O-O 6.d4 b6 7.Nc3 Bb7 8.Ne5 Na6 
9.Qa4 Qe8 10.Qxe8 Rfxe8 11.Bg5 h6 12.Bxf6 Bxf6 13.cxd5 Bxe5 14.dxe5 exd5 
15.Nxd5 c6 16.Ne3 Rxe5 17.Nc4 Rc5 18.Nd6 Rb8 19.Rfd1 Ba8 20.Rd2 Rd8 21.
Rad1 Rf8 22.Ne4 Re5 23.Rd8 Nb4 24.Nc3 Nd5 25.Bxd5 cxd5 26.Rd7 a5 27.e3 Rc8
28.Nxd5 Bxd5 29.R1xd5 Rxd5 30.Rxd5 Rc2 31.Rb5 Rc6 32.h4 Kf8 33.f4 Ke7 34.
Kf2 Kd7 35.Kf3 Rd6 36.a4 Ke6 37.g4 f6 38.h5 Rc6 39.b3 Kd6 40.Ke4 Ke6 41.
Kf3 Kd6 42.Ke2 Ke6 43.e4 Kd6 44.Kd3 Kd7 45.Kd4 Ke6 46.e5 fxe5+ 47.fxe5 Ke7
48.Kd5 Kd7 49.b4 axb4 50.Rxb4 g6 51.Rc4 Re6 52.Rc7+ 1-0

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "8"]
[White "da Matta, Carlos Eduardo"]
[Black "Campos Moreno, Javier"]
[Result "0-1"]
[ECO "E18"]
[EventDate "1979.??.??"]
[PlyCount "84"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 d5 8.Ne5 Na6 
9.Be3 Ne4 10.Rc1 f6 11.Nd3 Nxc3 12.bxc3 c6 13.cxd5 cxd5 14.c4 Nc7 15.c5 
Ba6 16.Nb4 Bc4 17.Nc6 Qd7 18.Nxe7+ Qxe7 19.Rxc4 dxc4 20.Bxa8 Rxa8 21.Qc2 
b5 22.Bd2 Qd7 23.Bc3 f5 24.f3 a5 25.e4 b4 26.Ba1 c3 27.Rd1 Rf8 28.Qe2 Qc6 
29.Qe3 h6 30.Kg2 Rd8 31.Kf2 Kh8 32.Kg1 Qb5 33.Kg2 fxe4 34.Qxe4 Qc4 35.Qe3 
Qxa2+ 36.Kg1 Qd5 37.g4 e5 38.Bxc3 bxc3 39.Qxc3 exd4 40.Qxa5 Qxf3 41.Rd2 
Ra8 42.Qxc7 Ra1+ 0-1

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "9"]
[White "Campos Moreno, Javier"]
[Black "Barbero, Gerardo"]
[Result "0-1"]
[ECO "E21"]
[EventDate "1979.??.??"]
[PlyCount "36"]

1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Nc3 b6 5.g3 Bb7 6.Bg2 Bxc3+ 7.bxc3 O-O 8.O-O
d6 9.Ne1 Bxg2 10.Nxg2 e5 11.f3 e4 12.Bg5 exf3 13.exf3 Nbd7 14.Qd3 h6 15.
Bd2 Qc8 16.Ne3 Re8 17.Rfe1 Nf8 18.Qf5 Rxe3 0-1

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "9"]
[White "Hernandez, Rodrigo"]
[Black "da Matta, Carlos Eduardo"]
[Result "0-1"]
[ECO "B83"]
[EventDate "1979.??.??"]
[PlyCount "62"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Be2 e6 7.Be3 Be7 8.O-O 
Bd7 9.f4 a6 10.Qe1 b5 11.a3 O-O 12.Qg3 Nxd4 13.Bxd4 Bc6 14.Rad1 Qc7 15.e5 
dxe5 16.Bxe5 Qa7+ 17.Kh1 g6 18.f5 exf5 19.Rxf5 Ne4 20.Nxe4 Bxe4 21.Rh5 f6 
22.Bd4 Qb7 23.Rh4 Rac8 24.c3 f5 25.Rxh7 Kxh7 26.Qh3+ Kg8 27.Qh8+ Kf7 28.
Qg7+ Ke6 29.a4 bxa4 30.Bxa6 Qxa6 31.Qe5+ Kf7 0-1

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "9"]
[White "Santacruz, Francisco"]
[Black "Masculo, Jose Soares"]
[Result "1/2-1/2"]
[ECO "A48"]
[EventDate "1979.??.??"]
[PlyCount "135"]

1.d4 c5 2.e3 Nf6 3.Nf3 g6 4.Be2 Bg7 5.O-O O-O 6.c4 cxd4 7.exd4 d5 8.Nc3 
Nc6 9.Be3 Bg4 10.h3 Bxf3 11.Bxf3 dxc4 12.Bxc6 bxc6 13.Qa4 Qb6 14.Qxc4 Qxb2
15.Rab1 Qa3 16.Rb3 Qd6 17.Rfb1 Nd5 18.Nxd5 cxd5 19.Qb4 Qxb4 20.Rxb4 e6 21.
Ra4 f5 22.Bf4 Rfc8 23.Ra6 Bxd4 24.Rxe6 Rc2 25.Be3 Bxe3 26.fxe3 Rac8 27.Rb7
R8c7 28.Rxc7 Rxc7 29.Rd6 Rc1+ 30.Kh2 Re1 31.Rxd5 Rxe3 32.Ra5 Re7 33.Kg3 
Kg7 34.Ra6 Kh6 35.Kf3 Kg5 36.g3 Rf7 37.Ra5 Kh5 38.a3 g5 39.a4 f4 40.gxf4 
Rxf4+ 41.Kg3 Rf7 42.h4 Rg7 43.Kh3 h6 44.hxg5 hxg5 45.Kg3 Rc7 46.Ra6 Rb7 
47.Ra5 Rd7 48.Ra6 Rg7 49.Ra5 Re7 50.Ra6 Re3+ 51.Kf2 Re7 52.Kg3 Rg7 53.Ra5 
Kg6 54.Kg4 Kf6 55.Rf5+ Ke6 56.Rxg5 Rd7 57.Kf3 Kd6 58.Ke3 Kc6 59.Rh5 Kb6 
60.Rb5+ Ka6 61.Rh5 Rd1 62.Rh4 Ka5 63.Rd4 Rxd4 64.Kxd4 Kxa4 65.Kc3 Ka3 66.
Kc2 Ka2 67.Kc1 a5 68.Kc2 1/2-1/2

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "10"]
[White "Barbero, Gerardo"]
[Black "Masculo, Jose Soares"]
[Result "1-0"]
[ECO "B51"]
[EventDate "1979.??.??"]
[PlyCount "79"]

1.e4 c5 2.Nf3 Nc6 3.Bb5 d6 4.O-O Bd7 5.Re1 Nf6 6.c3 a6 7.Bf1 Bg4 8.h3 Bh5 
9.d3 e6 10.Be3 Be7 11.Nbd2 O-O 12.Qb3 d5 13.e5 Nd7 14.Bf4 b5 15.Qd1 b4 16.
c4 Nb6 17.cxd5 Qxd5 18.g4 Bg6 19.Ne4 Rad8 20.Qc1 Nd7 21.Bg2 Qxd3 22.Re3 
Qb5 23.Nd6 Bxd6 24.exd6 Nd4 25.Nxd4 cxd4 26.Bc6 Qb6 27.Rb3 Nc5 28.Bg2 Nxb3
29.axb3 Rxd6 30.Bxd6 Qxd6 31.Qc4 d3 32.Rxa6 Qe5 33.Qxb4 Qxb2 34.Rd6 h6 35.
Bf1 Ra8 36.h4 Ra2 37.Rd8+ Kh7 38.Qf4 e5 39.Qe3 d2 40.h5 1-0

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "10"]
[White "Hernandez, Rodrigo"]
[Black "Santacruz, Francisco"]
[Result "1/2-1/2"]
[ECO "B07"]
[EventDate "1979.??.??"]
[PlyCount "81"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Bc4 Bg7 5.Qe2 e5 6.dxe5 dxe5 7.Bg5 c6 8.Nf3 
Qc7 9.a4 O-O 10.O-O Nbd7 11.Rfd1 Nc5 12.h3 Ne6 13.Bxe6 Bxe6 14.Be3 h6 15.
a5 Nd7 16.Nd2 Kh7 17.Ra4 Rg8 18.Nb3 Bf8 19.Qd2 Be7 20.f4 exf4 21.Bxf4 Ne5 
22.Nd4 Rad8 23.Kh1 Bc8 24.Qf2 Bd6 25.Nce2 Qe7 26.Raa1 Kh8 27.c3 Bc7 28.Rf1
Nd3 29.Qf3 Nxf4 30.Nxf4 Qe5 31.g3 Rgf8 32.Qg2 Bd7 33.b4 Rde8 34.Rae1 c5 
35.Nf3 Qg7 36.Nd5 Bd8 37.Kh2 Bc6 38.Qd2 Re6 39.bxc5 Rfe8 40.Nd4 Rxe4 41.
Nxc6 1/2-1/2

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "10"]
[White "da Matta, Carlos Eduardo"]
[Black "Donatti, Alvaro"]
[Result "1-0"]
[ECO "D36"]
[EventDate "1979.??.??"]
[PlyCount "145"]

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 c6 5.cxd5 exd5 6.Qc2 Be7 7.e3 O-O 8.Bd3 
Nbd7 9.Nf3 Re8 10.O-O Nf8 11.Rae1 h6 12.Bf4 Be6 13.Rb1 Bd6 14.Bxd6 Qxd6 
15.b4 a6 16.Na4 N8d7 17.Rfc1 Rec8 18.Nc5 b5 19.h3 Nb6 20.a4 Nc4 21.Ra1 Nd7
22.Ra2 Nxc5 23.dxc5 Qc7 24.Rca1 Qb7 25.Nd4 Rd8 26.Qe2 Ne5 27.Bb1 Nd7 28.e4
bxa4 29.Rxa4 a5 30.Qc2 Kf8 31.Nxe6+ fxe6 32.exd5 exd5 33.bxa5 Re8 34.Qf5+ 
Nf6 35.Bd3 Qa7 36.Rc1 Qb8 37.Ra2 Qb4 38.a6 Qb3 39.Rac2 Re7 40.Bf1 Rae8 41.
Rc3 Qb2 42.Qc2 Qxc2 43.R3xc2 Rb8 44.f3 Ke8 45.Re2 Rxe2 46.Bxe2 Nd7 47.Kf2 
Ra8 48.Ke3 Nb8 49.Ra1 Nd7 50.Kd4 Rb8 51.Ra5 Kd8 52.Bd3 Ra8 53.Bf5 Nb8 54.
a7 Nd7 55.f4 Kc7 56.Bxd7 Kxd7 57.Ra6 Kc7 58.Ke5 Kb7 59.Rb6+ Kc7 60.Rb3 
Rxa7 61.Rg3 Kc8 62.Kd6 Rc7 63.f5 Kb8 64.Ra3 Kb7 65.g4 h5 66.g5 Kb8 67.f6 
gxf6 68.gxf6 Kc8 69.Ra8+ Kb7 70.Ra7+ Kxa7 71.Kxc7 d4 72.f7 d3 73.f8=Q 1-0

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "11"]
[White "Donatti, Alvaro"]
[Black "Hernandez, Rodrigo"]
[Result "0-1"]
[ECO "A47"]
[EventDate "1979.??.??"]
[PlyCount "22"]

1.d4 Nf6 2.Nf3 e6 3.e3 b6 4.Bd3 Bb7 5.Nbd2 d5 6.O-O Bd6 7.c3 Nbd7 8.Re1 
Ne4 9.Bc2 f5 10.c4 O-O 11.b3 Nc3 0-1

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "11"]
[White "Masculo, Jose Soares"]
[Black "da Matta, Carlos Eduardo"]
[Result "1-0"]
[ECO "A07"]
[EventDate "1979.??.??"]
[PlyCount "105"]

1.g3 d5 2.Nf3 Bg4 3.Bg2 c6 4.b3 Nd7 5.Bb2 Ngf6 6.d3 e6 7.Nbd2 Be7 8.O-O 
O-O 9.e4 a5 10.a4 b5 11.h3 Bxf3 12.Nxf3 bxa4 13.bxa4 Qc7 14.Qe2 Rfb8 15.
Ra2 Qa7 16.Nd4 Rxb2 17.Nxc6 Rxa2 18.Nxa7 Rxa7 19.exd5 e5 20.d4 Bd6 21.Qc4 
Ra3 22.Qc8+ Bf8 23.dxe5 Nxe5 24.d6 Ned7 25.c4 Rc3 26.g4 h6 27.f4 g5 28.
fxg5 hxg5 29.Qd8 Kg7 30.Bc6 Bxd6 31.Bxd7 Bc5+ 32.Kg2 Nxd7 33.Qxg5+ Kf8 34.
Qg6 Ne5 35.Qh6+ Kg8 36.Qg5+ Ng6 37.Qxc5 Re7 38.Rb1 Nf4+ 39.Kf1 Rf3+ 40.Kg1
Rg3+ 41.Kh2 Rge3 42.Qg5+ Ng6 43.h4 R3e5 44.Qh6 Re2+ 45.Kh1 Re8 46.h5 Ne5 
47.Qg5+ Kf8 48.Qf5 Rd8 49.h6 Ng6 50.Qf6 Rde8 51.Qg7+ Ke7 52.Rb7+ Kd8 53.
Qd4+ 1-0

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "11"]
[White "Santacruz, Francisco"]
[Black "Campos Moreno, Javier"]
[Result "0-1"]
[ECO "E19"]
[EventDate "1979.??.??"]
[PlyCount "92"]

1.d4 Nf6 2.Nf3 e6 3.c4 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 Ne4 8.Qc2 
Nxc3 9.Qxc3 c5 10.dxc5 bxc5 11.Qb3 Qc7 12.Bf4 d6 13.Rfd1 Nc6 14.Rac1 Rfd8 
15.Rd2 h6 16.h4 f5 17.Qc2 e5 18.Be3 Rf8 19.Rdd1 Nb4 20.Qb3 a5 21.Bd2 Bc6 
22.a3 a4 23.Qe3 Na6 24.Bc3 Nb8 25.Ne1 Bxg2 26.Nxg2 Nc6 27.Qd3 Qd7 28.Qd5+ 
Kh7 29.e3 Rad8 30.Rd2 Rfe8 31.Rcd1 Qc8 32.Qf3 g6 33.Qd5 Rf8 34.Qd3 Nb8 35.
Qe2 Nd7 36.f3 Qa6 37.Kf2 Nb6 38.h5 g5 39.f4 e4 40.Rc2 Qxc4 41.Qxc4 Nxc4 
42.Ke2 d5 43.Ne1 gxf4 44.gxf4 Rg8 45.Rcc1 Rg3 46.Nc2 Rg2+ 0-1

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "12"]
[White "Campos Moreno, Javier"]
[Black "Donatti, Alvaro"]
[Result "1-0"]
[ECO "E57"]
[EventDate "1979.??.??"]
[PlyCount "81"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 c5 5.e3 O-O 6.Bd3 d5 7.O-O Nc6 8.a3 cxd4 
9.exd4 dxc4 10.Bxc4 Be7 11.Re1 b6 12.Ba2 Bb7 13.Qd3 Qd7 14.Bg5 Rfd8 15.
Rad1 Rac8 16.Bb1 g6 17.Ba2 Nd5 18.Ne4 Bxg5 19.Nfxg5 Qe7 20.Qh3 h5 21.Nf3 
Kg7 22.Qg3 Ba8 23.Neg5 Qf6 24.Nxf7 Kxf7 25.Ng5+ Kg7 26.Nxe6+ Kh7 27.Nxd8 
Rxd8 28.Re4 Nce7 29.Bxd5 Nxd5 30.Rde1 Rf8 31.Re6 Qf5 32.h3 Nf4 33.R6e5 Qf6
34.Re7+ Kh8 35.Re8 Qf7 36.Rxf8+ Qxf8 37.Qg5 Nxg2 38.Re7 Nf4 39.Qe5+ Kg8 
40.Re8 Nxh3+ 41.Kh2 1-0

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "12"]
[White "Hernandez, Rodrigo"]
[Black "Masculo, Jose Soares"]
[Result "1/2-1/2"]
[ECO "B59"]
[EventDate "1979.??.??"]
[PlyCount "121"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 e5 7.Nb3 Be7 8.O-O 
O-O 9.Be3 a5 10.a4 Nb4 11.Bf3 Be6 12.Bg5 Rc8 13.Rc1 h6 14.Bxf6 Bxf6 15.Nd2
Bg5 16.g3 d5 17.h4 dxe4 18.hxg5 exf3 19.gxh6 Bh3 20.Re1 Bg2 21.Re3 Qd7 22.
Nxf3 Qh3 23.Nh2 Bc6 24.Qf1 Qxh6 25.Rxe5 Rfd8 26.Re2 Rd2 27.Rxd2 Qxd2 28.
Qe1 Qh6 29.Qe3 Qh3 30.Nf3 Re8 31.Qf4 Nxc2 32.Qxf7+ Kxf7 33.Ng5+ Kf6 34.
Nxh3 Nd4 35.Nf4 Rh8 36.Ncd5+ Kf7 37.Rd1 Nf3+ 38.Kg2 Ne5 39.f3 g5 40.Nh3 
Nxf3 41.Kxf3 Rxh3 42.Kg4 Bd7+ 43.Kxg5 Rxg3+ 44.Kf4 Rb3 45.Rd2 Bxa4 46.Ke5 
Bc6 47.Kd6 Bxd5 48.Kxd5 Ke7 49.Kc4 a4 50.Kd5 Kf6 51.Rd4 b5 52.Rd2 Kf5 53.
Rh2 Kg4 54.Kd4 Kf5 55.Kd5 Kg5 56.Rf2 Kg4 57.Kd4 Kg3 58.Rd2 Rb4+ 59.Kc5 Rb3
60.Kd4 Kf3 61.Rh2 1/2-1/2

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "12"]
[White "da Matta, Carlos Eduardo"]
[Black "Barbero, Gerardo"]
[Result "1-0"]
[ECO "A54"]
[EventDate "1979.??.??"]
[PlyCount "77"]

1.Nf3 d6 2.d4 Nf6 3.c4 Nbd7 4.Nc3 e5 5.g3 c6 6.Bg2 e4 7.Ng5 d5 8.O-O h6 9.
Nh3 Bb4 10.cxd5 cxd5 11.Bd2 Bxc3 12.Bxc3 O-O 13.e3 Re8 14.Nf4 Nf8 15.Rc1 
Bg4 16.Qd2 Qd7 17.Rfe1 Ng6 18.Ba5 b6 19.Bb4 Nh7 20.Qc2 Rac8 21.Qb3 Rcd8 
22.h4 Nf6 23.Rc2 Rc8 24.Bd2 Rxc2 25.Qxc2 Nxf4 26.exf4 Bf3 27.Re3 Bxg2 28.
Kxg2 Rc8 29.Rc3 Rxc3 30.Qxc3 g6 31.f5 h5 32.fxg6 fxg6 33.Bg5 Ne8 34.b3 Nd6
35.Bf4 Nb5 36.Qd2 Qg4 37.Be5 Qf3+ 38.Kg1 Kh7 39.Qb4 1-0

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "13"]
[White "Barbero, Gerardo"]
[Black "Hernandez, Rodrigo"]
[Result "0-1"]
[ECO "C45"]
[EventDate "1979.??.??"]
[PlyCount "88"]

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Nb3 Bb6 6.a4 Qf6 7.Qe2 a6 8.Nc3 
Nge7 9.Nd5 Nxd5 10.exd5+ Ne7 11.a5 Ba7 12.h4 h6 13.Ra4 Kd8 14.Re4 d6 15.g4
Re8 16.Rh3 Qg6 17.h5 Qxe4 18.Qxe4 Nxd5 19.Qxe8+ Kxe8 20.Rg3 Kf8 21.Bg2 Be6
22.g5 hxg5 23.Bxg5 Re8 24.Kf1 f6 25.Bd2 Kf7 26.Nc1 c6 27.Ne2 Ne7 28.Nf4 
Nf5 29.Ra3 Bc4+ 30.Kg1 Nd4 31.b3 Ne2+ 32.Kh2 Nxf4 33.Bxf4 Be2 34.Ra4 Bc5 
35.f3 d5 36.Kg3 Bd1 37.Ra1 Bxc2 38.Rc1 Re2 39.Bf1 Rf2 40.Bh3 Re2 41.Bf1 
Rf2 42.Bh3 f5 43.Re1 Bd3 44.Bd6 Re2 0-1

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "13"]
[White "Donatti, Alvaro"]
[Black "Santacruz, Francisco"]
[Result "1/2-1/2"]
[ECO "A47"]
[EventDate "1979.??.??"]
[PlyCount "57"]

1.d4 Nf6 2.Nf3 e6 3.e3 b6 4.Bd3 Bb7 5.Nbd2 Be7 6.c3 O-O 7.O-O d5 8.Qc2 c5 
9.dxc5 bxc5 10.c4 Nc6 11.a3 Qc7 12.b3 Rad8 13.Bb2 h6 14.Rad1 Ng4 15.h3 
Nge5 16.Be2 Bf6 17.Nxe5 Nxe5 18.cxd5 Bxd5 19.Ne4 Bxe4 20.Qxe4 Nf3+ 21.Qxf3
Bxb2 22.a4 Rxd1 23.Rxd1 g6 24.Bc4 Rd8 25.Qe2 Rxd1+ 26.Qxd1 Be5 27.Qd3 Qd6 
28.Qxd6 Bxd6 29.Kf1 1/2-1/2

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "13"]
[White "Masculo, Jose Soares"]
[Black "Campos Moreno, Javier"]
[Result "1/2-1/2"]
[ECO "C44"]
[EventDate "1979.??.??"]
[PlyCount "62"]

1.e4 e5 2.Nf3 Nf6 3.d3 Nc6 4.Be2 d5 5.Nbd2 Bc5 6.O-O O-O 7.c3 dxe4 8.dxe4 
a5 9.Qc2 Qe7 10.a4 h6 11.Nc4 Bg4 12.Ne3 Bxe3 13.Bxe3 Rfd8 14.Nh4 Bxe2 15.
Nf5 Qd7 16.Qxe2 Qd3 17.Qf3 Qxe4 18.Nxh6+ Kf8 19.Qh3 gxh6 20.Qxh6+ Ke7 21.
Bc5+ Ke6 22.f4 Rh8 23.f5+ Kd5 24.Qxf6 Rag8 25.Rf2 Kxc5 26.b4+ axb4 27.
cxb4+ Kb6 28.b5 Rxg2+ 29.Rxg2 Qd4+ 30.Kh1 Qxa1+ 31.Rg1 Qc3 1/2-1/2

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "14"]
[White "Campos Moreno, Javier"]
[Black "Hernandez, Rodrigo"]
[Result "1/2-1/2"]
[ECO "C68"]
[EventDate "1979.??.??"]
[PlyCount "69"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O Bg4 6.h3 h5 7.d3 Qf6 8.Nbd2 
Ne7 9.Re1 Ng6 10.d4 Bd6 11.hxg4 hxg4 12.Nh2 Rxh2 13.Qxg4 Rh4 14.Qf5 Ne7 
15.Qxf6 gxf6 16.dxe5 fxe5 17.Nf3 Rh8 18.g3 f6 19.Kg2 Kf7 20.Be3 c5 21.Rh1 
Nc6 22.c3 Na5 23.Rxh8 Rxh8 24.Rh1 Rxh1 25.Kxh1 Nc4 26.Bc1 Bf8 27.Nd2 Nd6 
28.f3 Bh6 29.Nb3 Bxc1 30.Nxc1 Ke6 31.Kg2 Nc4 32.Nd3 b6 33.Kf2 Nd6 34.Ke3 
Nc4+ 35.Ke2 1/2-1/2

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "14"]
[White "Donatti, Alvaro"]
[Black "Barbero, Gerardo"]
[Result "1/2-1/2"]
[ECO "A28"]
[EventDate "1979.??.??"]
[PlyCount "46"]

1.c4 e5 2.Nc3 Nf6 3.Nf3 Nc6 4.d4 e4 5.Nd2 Bb4 6.e3 Bxc3 7.bxc3 O-O 8.Qc2 
Re8 9.Be2 d6 10.a4 Qe7 11.Ba3 Bg4 12.Bxg4 Nxg4 13.h3 Qh4 14.O-O Nf6 15.
Rae1 b6 16.Bb4 Re6 17.d5 Nxb4 18.cxb4 Re5 19.f4 exf3 20.Nxf3 Qe4 21.Qe2 
Re7 22.Nd4 Qg6 23.Rf4 a6 1/2-1/2

[Event "4th Pan-American U20"]
[Site "Belo Horizonte BRA"]
[Date "1979.01.??"]
[Round "14"]
[White "Santacruz, Francisco"]
[Black "da Matta, Carlos Eduardo"]
[Result "1/2-1/2"]
[ECO "D27"]
[EventDate "1979.??.??"]
[PlyCount "55"]

1.d4 d5 2.Nf3 Nf6 3.c4 dxc4 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.dxc5 Qxd1 8.Rxd1 
Bxc5 9.a3 b5 10.Be2 Nbd7 11.b4 Be7 12.Bb2 O-O 13.Nbd2 Bb7 14.Rac1 Rac8 15.
Nb3 Rxc1 16.Rxc1 Rc8 17.Rxc8+ Bxc8 18.Nfd4 Kf8 19.Na5 Nb8 20.Kf1 Ke8 21.
Ndb3 g6 22.Bf3 Nfd7 23.Ke2 Bf6 24.Bxf6 Nxf6 25.Kd3 Kd7 26.Nc5+ Kd6 27.
Ncb7+ Kc7 28.Nc5 1/2-1/2

