[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "1"]
[White "Bronstein, Luis Marcos"]
[Black "Emma, Jaime"]
[Result "1-0"]
[WhiteElo "2355"]
[BlackElo "2405"]
[ECO "B57"]
[EventDate "1975.10.18"]
[PlyCount "87"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bc4 Qb6 7.Nb3 e6 8.O-O 
a6 9.a4 Qc7 10.a5 Be7 11.Be3 Ne5 12.Be2 Nc4 13.Bxc4 Qxc4 14.Ra4 Qc6 15.Qe2
O-O 16.Rd1 Qe8 17.Bf4 d5 18.Rad4 dxe4 19.Nxe4 Nxe4 20.Qxe4 f6 21.Bd6 e5 
22.R4d2 Bxd6 23.Rxd6 Qg6 24.Qxg6 hxg6 25.Nc5 Bf5 26.c4 Rac8 27.b4 Rc7 28.
f3 Re8 29.Rd8 Kf7 30.Rxe8 Kxe8 31.Rd6 Ke7 32.Rb6 Bc8 33.h4 Kd8 34.Rd6+ Ke7
35.Rb6 Kd8 36.Kf2 Re7 37.g4 Kc7 38.g5 Rf7 39.Ne4 fxg5 40.hxg5 Bf5 41.Rxb7+
Kxb7 42.Nd6+ Kc7 43.Nxf7 e4 44.f4 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "1"]
[White "Garcia Toledo, Pedro"]
[Black "Donoso Velasco, Pedro"]
[Result "0-1"]
[BlackElo "2380"]
[ECO "B86"]
[EventDate "1975.10.18"]
[PlyCount "54"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 Be7 7.Bb3 O-O 8.Be3 
Nbd7 9.f4 Nc5 10.Qf3 e5 11.Nf5 Bxf5 12.exf5 e4 13.Qe2 d5 14.O-O-O Nxb3+ 
15.axb3 Qa5 16.g4 Rac8 17.g5 Bb4 18.Bd4 Nd7 19.g6 hxg6 20.fxg6 Qa1+ 21.Nb1
Nc5 22.Bxc5 Rxc5 23.gxf7+ Rxf7 24.Qh5 Rxc2+ 25.Kxc2 Rc7+ 26.Nc3 Rxc3+ 27.
bxc3 Qa2+ 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "1"]
[White "Gouveia, Carlos Eduardo"]
[Black "Trois, Francisco"]
[Result "1-0"]
[BlackElo "2310"]
[ECO "A11"]
[EventDate "1975.10.18"]
[PlyCount "169"]

1.c4 c6 2.g3 Nf6 3.Bg2 d5 4.Nf3 Bf5 5.cxd5 cxd5 6.O-O Nc6 7.d3 e5 8.Nc3 h6
9.d4 e4 10.Ne5 Bd6 11.Bf4 O-O 12.Nxc6 bxc6 13.Bxd6 Qxd6 14.Rc1 Rfe8 15.Qd2
Rab8 16.Nd1 Rb5 17.Ne3 Bd7 18.Rc3 a5 19.Rfc1 Reb8 20.Nd1 Nh7 21.Rc5 Ng5 
22.Rxb5 Rxb5 23.Nc3 Rb8 24.a3 Re8 25.Nd1 Qf6 26.Nc3 Rb8 27.Rd1 Qd8 28.h4 
Ne6 29.Bh3 Qb6 30.Bxe6 Bxe6 31.Rb1 Qb3 32.Nd1 Kh7 33.Rc1 Bg4 34.Kf1 Qb6 
35.Rc5 Bh3+ 36.Ke1 Ra8 37.Qc2 Be6 38.Qa4 Ra6 39.Qc2 Ra8 40.Qc3 Bd7 41.Qc1 
Kg8 42.Qc2 Qd8 43.Kd2 Qb6 44.Kc1 Qa6 45.Nc3 Bg4 46.Kd1 Re8 47.Ke1 Ra8 48.
Na4 Bd7 49.Rc3 Qa7 50.Nc5 Be8 51.Rb3 Qe7 52.Rb7 Qf6 53.Qd2 g5 54.hxg5 hxg5
55.Qe3 Kg7 56.f3 exf3 57.exf3 Qf5 58.Kd2 Kg6 59.Nd3 Kg7 60.g4 Qg6 61.Kc3 
Kg8 62.Kb3 Kg7 63.Ka2 Kf8 64.Qe7+ Kg7 65.Qe5+ Qf6 66.Qe3 Qh6 67.Nc5 Kf8 
68.Re7 Qd6 69.Rb7 Qf6 70.a4 Rd8 71.Ka3 Ra8 72.b3 Rd8 73.Ra7 Rb8 74.Rxa5 
Qe7 75.Qxe7+ Kxe7 76.Ra7+ Kd6 77.b4 Rc8 78.a5 Rc7 79.Ra8 Ke7 80.Ka4 Bd7 
81.Rb8 Bc8 82.Rb6 f5 83.gxf5 Bxf5 84.a6 Bc8 85.Ka5 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "1"]
[White "Panno, Oscar"]
[Black "Sanguineti, Raul"]
[Result "1/2-1/2"]
[WhiteElo "2545"]
[BlackElo "2530"]
[ECO "A04"]
[EventDate "1975.10.18"]
[PlyCount "29"]

1.Nf3 Nf6 2.g3 c5 3.Bg2 Nc6 4.O-O e5 5.e4 Be7 6.Re1 O-O 7.c3 d6 8.Na3 Re8 
9.d3 Bf8 10.Bg5 h6 11.Bxf6 Qxf6 12.Nc4 Qd8 13.Ne3 Rb8 14.a3 g6 15.b4 
1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "1"]
[White "Quinteros, Miguel Angel"]
[Black "Szmetan, Jorge"]
[Result "0-1"]
[WhiteElo "2505"]
[BlackElo "2435"]
[ECO "B99"]
[EventDate "1975.10.18"]
[PlyCount "77"]

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.Qh3 Nb6 12.f5 e5 13.Nb3 Bd7 14.Be3 Na4 15.Nd5 
Nxd5 16.exd5 Nb6 17.Bxb6 Qxb6 18.Kb1 Bf6 19.Qf3 O-O-O 20.Qe4 h5 21.h4 Kb8 
22.g3 Rc8 23.Rc1 a5 24.Nd2 a4 25.a3 Rc5 26.c4 Rc7 27.Rhf1 Re8 28.Rc2 Bc8 
29.Be2 Rh8 30.Qd3 e4 31.Nxe4 Re7 32.c5 dxc5 33.d6 Rd7 34.Qc4 Be5 35.Qxa4 
Bxd6 36.Rd1 Rhd8 37.Rc3 Be5 38.Rxd7 Bxd7 39.Rc2 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "1"]
[White "Segal, Alexandru Sorin"]
[Black "Bravo Sedamanos, Hector"]
[Result "1-0"]
[WhiteElo "2385"]
[ECO "A69"]
[EventDate "1975.10.18"]
[PlyCount "63"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Be2 O-O 
9.Nf3 Re8 10.Nd2 c4 11.a4 Na6 12.O-O Nc5 13.e5 dxe5 14.Nxc4 e4 15.Be3 b6 
16.Ne5 Bb7 17.Bc4 Nd3 18.Nxd3 exd3 19.Qxd3 Ng4 20.Bd4 Bxd4+ 21.Qxd4 Rc8 
22.b3 Qh4 23.h3 Ne3 24.Ne4 Nf5 25.Qd3 Rcd8 26.Rae1 Nd6 27.Re2 Qe7 28.Nxd6 
Qxd6 29.Rxe8+ Rxe8 30.f5 Rd8 31.fxg6 hxg6 32.Rd1 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "1"]
[White "Silva Sanchez, Carlos"]
[Black "Camara, Helder"]
[Result "1-0"]
[WhiteElo "2355"]
[BlackElo "2340"]
[ECO "C63"]
[EventDate "1975.10.18"]
[PlyCount "67"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.d3 d6 5.O-O Be7 6.exf5 a6 7.Bc4 Bxf5 8.Nc3 
Nf6 9.Nd5 Nxd5 10.Bxd5 Qd7 11.d4 O-O-O 12.Be3 Nb4 13.Bb3 Bg4 14.dxe5 Rhf8 
15.e6 Bxe6 16.Bxe6 Qxe6 17.a3 Nc6 18.Nd4 Qd7 19.Nxc6 Qxc6 20.b4 Rf6 21.a4 
Rg6 22.g3 Bf6 23.Ra3 Qc4 24.Qf3 Bb2 25.Qf5+ Kb8 26.Rb3 Be5 27.Rd1 Qe6 28.
Qe4 Qg4 29.Qxg4 Rxg4 30.f4 Bf6 31.Kg2 Be7 32.Re1 Bf8 33.h3 Rg6 34.f5 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "1"]
[White "Stekel Grunberg, Moises"]
[Black "Gamarra Caceres, Carlos"]
[Result "1-0"]
[WhiteElo "2350"]
[ECO "A26"]
[EventDate "1975.10.18"]
[PlyCount "111"]

1.c4 Nf6 2.g3 g6 3.Bg2 Bg7 4.Nc3 O-O 5.e4 d6 6.Nge2 Nc6 7.O-O e5 8.d3 a6 
9.a3 Rb8 10.b4 b5 11.Bg5 h6 12.Bd2 Nd4 13.cxb5 axb5 14.Nxd4 exd4 15.Ne2 
Nd7 16.f4 c5 17.Be1 Nb6 18.Bf2 Bg4 19.h3 Bxe2 20.Qxe2 c4 21.Qd1 c3 22.Qb3 
Na4 23.Rfe1 Nb2 24.Bf1 Re8 25.Qd5 Qb6 26.Rac1 Rbc8 27.Rc2 Qc6 28.Qxc6 Rxc6
29.e5 dxe5 30.Bxd4 exd4 31.Rxe8+ Kh7 32.Be2 Ra6 33.Rb8 Re6 34.Kf2 Re3 35.
Rxb5 Nxd3+ 36.Bxd3 Rxd3 37.Rd5 Rd1 38.Ke2 Ra1 39.Kd3 Rxa3 40.Rxd4 Bxd4 41.
Kxd4 g5 42.Rxc3 Ra8 43.f5 Kg7 44.b5 Kf6 45.g4 Rd8+ 46.Kc5 h5 47.b6 Rc8+ 
48.Kb4 Re8 49.Kb5 Rb8 50.Rc5 Rg8 51.Rc7 hxg4 52.hxg4 Ke5 53.Rxf7 Kf4 54.b7
Kxg4 55.Kc6 Kf3 56.Rc7 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "1"]
[White "Van Riemsdijk, Herman Claudius"]
[Black "Benitez Ayestaran, Otto"]
[Result "1-0"]
[WhiteElo "2370"]
[ECO "B09"]
[EventDate "1975.10.18"]
[PlyCount "79"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nc6 7.e5 dxe5 8.dxe5 
Nd5 9.Bd2 Bg4 10.Be4 Nb6 11.h3 Bxf3 12.Qxf3 Nd4 13.Qf2 f6 14.exf6 exf6 15.
O-O-O f5 16.Bxb7 Rb8 17.Ba6 c5 18.g4 Kh8 19.g5 Nd5 20.Bc4 Qb6 21.Na4 Qc6 
22.Bxd5 Qxa4 23.Bc3 Rfe8 24.Rhe1 Qb5 25.Bxd4 cxd4 26.Bb3 Re4 27.h4 Rbe8 
28.h5 gxh5 29.Rh1 Qb8 30.Rh4 Re2 31.Qf3 h6 32.Qxh5 d3 33.Rxd3 Re1+ 34.Rd1 
Qb6 35.Rh1 Qe3+ 36.Kb1 Rxh1 37.Rxh1 Rd8 38.gxh6 Bf6 39.Qxf5 Rf8 40.Qd3 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "2"]
[White "Benitez Ayestaran, Otto"]
[Black "Silva Sanchez, Carlos"]
[Result "1/2-1/2"]
[BlackElo "2355"]
[ECO "B33"]
[EventDate "1975.10.18"]
[PlyCount "80"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e5 6.Ndb5 d6 7.Bg5 a6 8.Na3 
Be6 9.Nc4 Nd4 10.Ne3 Be7 11.Bxf6 Bxf6 12.Ncd5 Bg5 13.c3 Nc6 14.Be2 O-O 15.
Qd3 g6 16.O-O f5 17.exf5 gxf5 18.f4 Bh6 19.Rad1 b5 20.g3 Ra7 21.a4 Rb7 22.
Rd2 Qb8 23.axb5 axb5 24.Nc2 Rd8 25.Qf3 Bg7 26.Rfd1 Kh8 27.Ncb4 Nxb4 28.
Nxb4 Qc7 29.Qc6 exf4 30.Rxd6 Rxd6 31.Rxd6 Qxc6 32.Nxc6 Bd7 33.Bxb5 Bf8 34.
Rd5 Bxc6 35.Bxc6 Rxb2 36.Rxf5 Bg7 37.c4 fxg3 38.hxg3 Bd4+ 39.Kh1 Kg7 40.
Bg2 Rc2 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "2"]
[White "Bravo Sedamanos, Hector"]
[Black "Quinteros, Miguel Angel"]
[Result "1-0"]
[BlackElo "2505"]
[ECO "B87"]
[EventDate "1975.10.18"]
[PlyCount "89"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bc4 e6 7.O-O b5 8.Bb3 Be7
9.f4 O-O 10.e5 dxe5 11.fxe5 Bc5 12.Be3 Nfd7 13.Qh5 Bxd4 14.Bxd4 Nc6 15.
Rad1 Nxd4 16.Rxd4 Qb6 17.Rf4 Bb7 18.Kh1 Rad8 19.Rd3 Qc5 20.Rh3 h6 21.Bd5 
exd5 22.Rg4 Qb6 23.Rhg3 Qg6 24.Rxg6 fxg6 25.Qd1 Nxe5 26.h3 d4 27.Ne2 g5 
28.Nxd4 Ng6 29.c3 Nh4 30.Kg1 Rde8 31.Qd2 Rf6 32.b3 Kh8 33.c4 Rd8 34.Qb2 
Rfd6 35.Rd3 Rc8 36.g3 bxc4 37.bxc4 Be4 38.Re3 Rxd4 39.Qxd4 Nf3+ 40.Rxf3 
Bxf3 41.Kf2 Rf8 42.Qd6 Rf6 43.Qd8+ Kh7 44.Qxf6 gxf6 45.Kxf3 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "2"]
[White "Camara, Helder"]
[Black "Stekel Grunberg, Moises"]
[Result "1/2-1/2"]
[WhiteElo "2340"]
[BlackElo "2350"]
[ECO "E61"]
[EventDate "1975.10.18"]
[PlyCount "107"]

1.d4 g6 2.c4 Bg7 3.Nc3 d6 4.Nf3 Bg4 5.e3 Nf6 6.h3 Bc8 7.Be2 O-O 8.O-O Nbd7
9.Qc2 c6 10.Rd1 a6 11.b4 b5 12.Bb2 Nb6 13.c5 Nc4 14.cxd6 exd6 15.Bxc4 bxc4
16.d5 Bf5 17.Qc1 Nxd5 18.Nxd5 Bxb2 19.Qxb2 cxd5 20.Qd4 Be6 21.h4 h6 22.a4 
Qd7 23.Qf4 Kg7 24.Nd4 Qe7 25.b5 Bd7 26.b6 a5 27.b7 Rab8 28.Rdb1 Rfd8 29.
Rb6 Be8 30.h5 Qe5 31.Qh4 g5 32.Qg3 Kf8 33.f4 gxf4 34.Qxf4 Qxf4 35.exf4 Rd7
36.Rab1 Rc7 37.Nf5 c3 38.Rc1 c2 39.Nxd6 Bxa4 40.Kf2 d4 41.Ke2 Rc3 42.Ra6 
Bc6 43.Kd2 Bxg2 44.Rxa5 Rc7 45.Rxc2 Rxc2+ 46.Kxc2 Bxb7 47.Kd3 Bf3 48.Rf5 
Ke7 49.Nb5 Rd8 50.Nxd4 Rd5 51.Ke3 Rxf5 52.Nxf5+ Kf6 53.Nxh6 Bxh5 54.Kd2 
1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "2"]
[White "Donoso Velasco, Pedro"]
[Black "Segal, Alexandru Sorin"]
[Result "0-1"]
[WhiteElo "2380"]
[BlackElo "2385"]
[ECO "B15"]
[EventDate "1975.10.18"]
[PlyCount "144"]

1.e4 g6 2.d4 Bg7 3.Nf3 c6 4.Nc3 d5 5.h3 Nf6 6.e5 Ne4 7.Bd3 Nxc3 8.bxc3 c5 
9.dxc5 Qa5 10.O-O Nc6 11.Qe2 Qxc5 12.Rb1 a6 13.Re1 O-O 14.c4 dxc4 15.Bxc4 
Na5 16.Bd3 b5 17.Be3 Qc7 18.a4 bxa4 19.Bb6 Qc3 20.Be4 Nc6 21.Qd1 Bf5 22.
Re3 Qxe3 23.fxe3 Bxe4 24.Ng5 Bf5 25.g4 Be6 26.Nxe6 fxe6 27.Qd7 Nxe5 28.
Qxa4 Nf3+ 29.Kh1 Nd2 30.Rd1 Rf2 31.Qd7 Nf3 32.Qxe6+ Kh8 33.Bc7 Rf8 34.c4 
h5 35.Bg3 Re2 36.Qxg6 h4 37.Bc7 e5 38.Bxe5 Nxe5 39.Qh5+ Kg8 40.Kg1 Nf3+ 
41.Kf1 Nd4+ 42.Kg1 Rxe3 43.Qd5+ Ne6 44.c5 Rd8 45.Qxd8+ Nxd8 46.Rxd8+ Kf7 
47.c6 Rc3 48.Rd7+ Kg6 49.Rd6+ Kg5 50.c7 Kf4 51.Rxa6 Kg3 52.Ra1 Rxc7 53.
Ra3+ Bc3 54.g5 Kxh3 55.g6 Kg4 56.Ra4+ Kg5 57.Kg2 Bf6 58.Ra6 Kxg6 59.Kh3 
Kh5 60.Ra5+ Bg5 61.Ra3 Rc5 62.Rf3 Bd8 63.Rd3 Bc7 64.Rb3 Rg5 65.Rb7 Rg3+ 
66.Kh2 Rc3+ 67.Kh1 Kg4 68.Rb1 Bg3 69.Ra1 Rc2 70.Rb1 Kh3 71.Rf1 Rh2+ 72.Kg1
Rg2+ 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "2"]
[White "Gamarra Caceres, Carlos"]
[Black "Garcia Toledo, Pedro"]
[Result "1/2-1/2"]
[ECO "B99"]
[EventDate "1975.10.18"]
[PlyCount "142"]

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.Qh3 Nb6 12.Rhf1 Bd7 13.f5 e5 14.Nb3 O-O-O 15.Be3
Na4 16.Bd2 Kb8 17.Rfe1 Rc8 18.Kb1 Rhe8 19.Qe3 Ka8 20.Nxa4 Bxa4 21.c4 Nd7 
22.Bb4 Bxb3 23.axb3 Nb8 24.Bc2 Nc6 25.Bc3 Bf6 26.Rd5 Nd4 27.Qd3 Qe7 28.b4 
Rc7 29.b3 Kb8 30.Bd1 Rec8 31.Bd2 Rd7 32.Bc3 b5 33.cxb5 Nxb5 34.Bb2 Rdc7 
35.Re2 Bg5 36.Bc2 Rc6 37.g3 Qa7 38.h4 Qg1+ 39.Qd1 Be3 40.Qxg1 Bxg1 41.Bd3 
Nc3+ 42.Bxc3 Rxc3 43.Bc4 Rc6 44.Ra5 Bd4 45.Rea2 Rxg3 46.Rxa6 Rxa6 47.Rxa6 
Rg4 48.Bd5 Rxh4 49.b5 Rh3 50.b6 Rh1+ 51.Kc2 Ra1 52.Rxa1 Bxa1 53.Bxf7 Kb7 
54.Kd3 Kxb6 55.Kc4 Kc6 56.Be8+ Kc7 57.Kd5 Kd8 58.Bh5 Ke7 59.b4 Bd4 60.Kc6 
Kf6 61.b5 Kg5 62.Bf3 g6 63.fxg6 Kxg6 64.b6 Kg5 65.b7 Ba7 66.Kc7 Kf4 67.Bh1
Kg3 68.b8=Q Bxb8+ 69.Kxb8 Kh2 70.Bf3 Kg3 71.Bh1 Kh2 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "2"]
[White "Gouveia, Carlos Eduardo"]
[Black "Van Riemsdijk, Herman Claudius"]
[Result "0-1"]
[BlackElo "2370"]
[ECO "A25"]
[EventDate "1975.10.18"]
[PlyCount "134"]

1.c4 Nf6 2.Nc3 e5 3.a3 a5 4.g3 g6 5.Bg2 Bg7 6.e3 O-O 7.Nge2 Nc6 8.O-O d6 
9.d3 Be6 10.Nd5 Qd7 11.Nec3 Nd8 12.e4 Nxd5 13.Nxd5 Nc6 14.Be3 Nd4 15.Bxd4 
exd4 16.Nf4 Ra6 17.b4 axb4 18.axb4 Rfa8 19.Rxa6 Rxa6 20.Nxe6 Qxe6 21.f4 
Ra3 22.b5 c6 23.bxc6 bxc6 24.Re1 Bf6 25.Rf1 Bd8 26.f5 Qe5 27.fxg6 hxg6 28.
Qf3 Ra7 29.h4 Kg7 30.Qf4 Bf6 31.Qxe5 Bxe5 32.Rf3 Kf8 33.Bf1 Bg7 34.Rf2 Ra1
35.Kg2 Be5 36.Rb2 Bxg3 37.Rb6 Bxh4 38.Rxc6 Ra2+ 39.Kh3 Be7 40.Kg3 Bf6 41.
Kf3 Be5 42.c5 dxc5 43.Rxc5 f6 44.Rc1 g5 45.Re1 Rd2 46.Be2 Ke7 47.Kf2 g4 
48.Rg1 g3+ 49.Kf3 Kd6 50.Rc1 Ra2 51.Rc8 Kd7 52.Rg8 Kd6 53.Rh8 Kc5 54.Rc8+ 
Kb5 55.Rc1 Kb4 56.Rc8 Ra1 57.Kg2 Kb3 58.Bg4 Ra2+ 59.Kg1 Rd2 60.Be6+ Kb2 
61.Bc4 Bf4 62.Rg8 Be3+ 63.Kf1 Bg5 64.Rxg5 fxg5 65.e5 Rf2+ 66.Kg1 Rf5 67.e6
Re5 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "2"]
[White "Sanguineti, Raul"]
[Black "Bronstein, Luis Marcos"]
[Result "1-0"]
[WhiteElo "2530"]
[BlackElo "2355"]
[ECO "E32"]
[EventDate "1975.10.18"]
[PlyCount "81"]

1.c4 Nf6 2.Nc3 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Bb4 6.Qc2 O-O 7.O-O d6 8.b3 Bxc3
9.Qxc3 c5 10.Bb2 e5 11.d3 Nc6 12.e4 Nh5 13.Qd2 f5 14.Ng5 Qe7 15.exf5 Rxf5 
16.Ne4 Rff8 17.f4 Nd4 18.Bxd4 cxd4 19.fxe5 dxe5 20.Qg5 Qxg5 21.Nxg5 Bxg2 
22.Kxg2 Nf6 23.h3 h6 24.Nf3 e4 25.dxe4 Nxe4 26.Nxd4 Rxf1 27.Rxf1 Rd8 28.
Nf3 Rd3 29.Re1 Nc3 30.Re8+ Kh7 31.h4 Nxa2 32.h5 Nc1 33.Nh4 Rd2+ 34.Kh3 Re2
35.Rd8 Re5 36.g4 Re3+ 37.Kg2 Rd3 38.Ra8 Rd2+ 39.Kf3 Rd3+ 40.Kf2 Rd2+ 41.
Ke3 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "2"]
[White "Szmetan, Jorge"]
[Black "Panno, Oscar"]
[Result "1/2-1/2"]
[WhiteElo "2435"]
[BlackElo "2545"]
[ECO "D77"]
[EventDate "1975.10.18"]
[PlyCount "53"]

1.d4 Nf6 2.Nf3 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O d5 6.c4 dxc4 7.Na3 Nc6 8.Nxc4 
Be6 9.b3 Bd5 10.Bb2 a5 11.Rc1 a4 12.bxa4 Ra6 13.Nfe5 Bxg2 14.Kxg2 Qa8 15.
Nxc6 bxc6 16.Kg1 Rxa4 17.a3 Ne4 18.Qd3 c5 19.dxc5 Rd8 20.Qe3 Rxc4 21.Rxc4 
Nd2 22.Bxg7 Nxf1 23.Qe4 Qxe4 24.Rxe4 Rd1 25.Kg2 Kxg7 26.Rxe7 Rc1 27.Rd7 
1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "2"]
[White "Trois, Francisco"]
[Black "Emma, Jaime"]
[Result "1/2-1/2"]
[WhiteElo "2310"]
[BlackElo "2405"]
[ECO "D22"]
[EventDate "1975.10.18"]
[PlyCount "46"]

1.d4 Nf6 2.Nf3 d5 3.c4 dxc4 4.e3 Bg4 5.Bxc4 e6 6.O-O a6 7.Be2 Nc6 8.Nbd2 
Bd6 9.h3 Bh5 10.Ne4 O-O 11.b3 Qe7 12.Bb2 Rfd8 13.Rc1 Bg6 14.Nxd6 cxd6 15.
Ba3 Qe8 16.Nd2 d5 17.Nf3 h6 18.Ne5 Nxe5 19.dxe5 Nd7 20.Bd6 Rdc8 21.Qd2 Qd8
22.Rxc8 Rxc8 23.Rc1 Nb8 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "3"]
[White "Bronstein, Luis Marcos"]
[Black "Szmetan, Jorge"]
[Result "0-1"]
[WhiteElo "2355"]
[BlackElo "2435"]
[ECO "C81"]
[EventDate "1975.10.18"]
[PlyCount "72"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 
Be6 9.Qe2 Be7 10.Rd1 O-O 11.c4 bxc4 12.Bxc4 Qd7 13.Nc3 Nxc3 14.bxc3 f6 15.
exf6 Bxf6 16.Bg5 Kh8 17.Bxf6 Rxf6 18.Ng5 Ne7 19.Nxe6 Rxe6 20.Qh5 Re8 21.g3
Rh6 22.Qf7 Rf6 23.Rxd5 Qc8 24.Qh5 Nxd5 25.Qxd5 Ref8 26.Rf1 Qd8 27.Qxd8 
Rxd8 28.Bb3 g5 29.Kg2 Rd3 30.c4 Rd2 31.g4 c5 32.Kg3 Kg7 33.f3 Re6 34.Rf2 
Ree2 35.Rxe2 Rxe2 36.h4 h6 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "3"]
[White "Emma, Jaime"]
[Black "Sanguineti, Raul"]
[Result "1/2-1/2"]
[WhiteElo "2405"]
[BlackElo "2530"]
[ECO "A56"]
[EventDate "1975.10.18"]
[PlyCount "35"]

1.d4 Nf6 2.c4 c5 3.d5 e5 4.Nc3 d6 5.e4 Be7 6.Nf3 Nbd7 7.a3 O-O 8.Be2 a6 9.
O-O Ne8 10.b4 b6 11.Rb1 g6 12.Bh6 Ng7 13.Qd2 Nf6 14.Ne1 Kh8 15.bxc5 bxc5 
16.f4 exf4 17.Nf3 Nd7 18.Bxf4 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "3"]
[White "Garcia Toledo, Pedro"]
[Black "Camara, Helder"]
[Result "1-0"]
[BlackElo "2340"]
[ECO "B89"]
[EventDate "1975.10.18"]
[PlyCount "49"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bc4 Qc7 7.Bb3 Nc6 8.Be3 
e6 9.Qe2 Be7 10.O-O-O Bd7 11.g4 h6 12.h4 h5 13.g5 Ng4 14.g6 Nxd4 15.gxf7+ 
Kxf7 16.Bxd4 Bf6 17.f4 Rhe8 18.e5 dxe5 19.fxe5 Be7 20.Rhf1+ Kg8 21.Qe4 
Bxh4 22.Qg6 Qd8 23.Qf7+ Kh7 24.Qxh5+ Nh6 25.Be3 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "3"]
[White "Panno, Oscar"]
[Black "Bravo Sedamanos, Hector"]
[Result "0-1"]
[WhiteElo "2545"]
[ECO "B37"]
[EventDate "1975.10.18"]
[PlyCount "58"]

1.Nf3 Nf6 2.c4 c5 3.Nc3 Nc6 4.d4 cxd4 5.Nxd4 g6 6.Nc2 Bg7 7.e4 O-O 8.Be2 
d6 9.O-O Bd7 10.Rb1 Rc8 11.b3 Ne8 12.Nd5 f5 13.exf5 Bxf5 14.Bd3 Qd7 15.Bb2
Bxd3 16.Qxd3 Qf5 17.Qd2 Bxb2 18.Rxb2 Rf7 19.Re1 Nf6 20.Nce3 Qd7 21.Nxf6+ 
Rxf6 22.Nd5 Rf7 23.Qc3 Rcf8 24.Rbe2 e5 25.Rd2 Nd4 26.f4 Qg4 27.Qg3 Qh5 28.
fxe5 Qe2 29.Rdd1 Qxd1 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "3"]
[White "Quinteros, Miguel Angel"]
[Black "Donoso Velasco, Pedro"]
[Result "1/2-1/2"]
[WhiteElo "2505"]
[BlackElo "2380"]
[ECO "C69"]
[EventDate "1975.10.18"]
[PlyCount "41"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O f6 6.d4 Bg4 7.c3 Bd6 8.dxe5 
fxe5 9.Qb3 b6 10.Be3 Qe7 11.Nbd2 Be6 12.Qa4 b5 13.Qc2 Nf6 14.c4 Nd7 15.c5 
Bxc5 16.Bxc5 Qxc5 17.Qxc5 Nxc5 18.Rfc1 Nd3 19.Rc3 O-O-O 20.Rxc6 Rd6 21.
Rxd6 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "3"]
[White "Segal, Alexandru Sorin"]
[Black "Gamarra Caceres, Carlos"]
[Result "1-0"]
[WhiteElo "2385"]
[ECO "E73"]
[EventDate "1975.10.18"]
[PlyCount "65"]

1.d4 Nf6 2.c4 c5 3.d5 g6 4.Nc3 Bg7 5.e4 O-O 6.Be2 d6 7.h4 e6 8.h5 exd5 9.
exd5 a6 10.hxg6 fxg6 11.Be3 Nbd7 12.Nh3 Ne5 13.Qd2 b5 14.cxb5 axb5 15.Bxb5
c4 16.Nf4 Nfg4 17.Nd1 Nxe3 18.fxe3 g5 19.Ne6 Qf6 20.Bxc4 Nxc4 21.Qc2 Qf5 
22.Qxc4 Be5 23.Kd2 Ba6 24.Qc2 Qf7 25.Qe4 Rab8 26.Rb1 Qe7 27.Nxg5 Rb7 28.
Qg4 Qg7 29.Rh4 Rbf7 30.Nxf7 Rxf7 31.b4 Bc3+ 32.Nxc3 Rf2+ 33.Ke1 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "3"]
[White "Silva Sanchez, Carlos"]
[Black "Gouveia, Carlos Eduardo"]
[Result "1/2-1/2"]
[WhiteElo "2355"]
[ECO "B43"]
[EventDate "1975.10.18"]
[PlyCount "81"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 Qc7 6.g3 b5 7.Bf4 d6 8.Bxb5+ 
axb5 9.Ndxb5 Qb6 10.Bxd6 Na6 11.O-O Bb7 12.Bxf8 Kxf8 13.Qd6+ Qxd6 14.Nxd6 
Bc6 15.Rfd1 Nf6 16.f3 Ke7 17.Ncb5 Rhd8 18.c4 Bxb5 19.Nxb5 Nd7 20.b3 Ndc5 
21.Rab1 Rxd1+ 22.Rxd1 Rd8 23.Rxd8 Kxd8 24.Kf2 e5 25.Ke3 Kd7 26.Kd2 f6 27.
Kc3 Ne6 28.h4 Nac7 29.Nxc7 Kxc7 30.Kd3 Nd4 31.f4 Kb6 32.b4 h5 33.fxe5 fxe5
34.a4 Nf3 35.Ke2 Nd4+ 36.Kd3 Nf3 37.c5+ Kc6 38.Ke2 Nd4+ 39.Kd3 Nf3 40.Ke2 
Nh2 41.Kd3 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "3"]
[White "Stekel Grunberg, Moises"]
[Black "Benitez Ayestaran, Otto"]
[Result "1/2-1/2"]
[WhiteElo "2350"]
[ECO "A34"]
[EventDate "1975.10.18"]
[PlyCount "48"]

1.c4 Nf6 2.g3 g6 3.Bg2 Bg7 4.Nc3 c5 5.e3 O-O 6.Nge2 e6 7.d4 d6 8.O-O Qe7 
9.b3 Nbd7 10.Bb2 Rb8 11.dxc5 dxc5 12.Nb5 a6 13.Nd6 b6 14.Nxc8 Rbxc8 15.Qc2
Rc7 16.Rad1 Nb8 17.Rd2 Rd8 18.Rfd1 Rcd7 19.Nf4 Rxd2 20.Rxd2 Rxd2 21.Qxd2 
Qd7 22.Qxd7 Nfxd7 23.Nd3 Bxb2 24.Nxb2 Kf8 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "3"]
[White "Van Riemsdijk, Herman Claudius"]
[Black "Trois, Francisco"]
[Result "1/2-1/2"]
[WhiteElo "2370"]
[BlackElo "2310"]
[ECO "C90"]
[EventDate "1975.10.18"]
[PlyCount "82"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 Na5 
9.Bc2 c5 10.d3 O-O 11.Nbd2 Re8 12.Nf1 h6 13.Ne3 Bf8 14.a3 Nc6 15.Bb3 Be6 
16.Nd5 Bxd5 17.exd5 Ne7 18.Nh4 Qd7 19.h3 g5 20.Nf3 Ng6 21.Nh2 Bg7 22.Ng4 
Nh7 23.Bc2 f5 24.Ne3 Rf8 25.a4 Ne7 26.Qf3 Nf6 27.axb5 axb5 28.Rxa8 Rxa8 
29.g4 f4 30.Nf1 Ng6 31.Nd2 Nh4 32.Qe2 h5 33.f3 Qf7 34.c4 b4 35.Bb1 Ra1 36.
b3 e4 37.Bb2 exf3 38.Nxf3 Nxf3+ 39.Qxf3 hxg4 40.hxg4 Ra8 41.d4 Re8 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "4"]
[White "Benitez Ayestaran, Otto"]
[Black "Garcia Toledo, Pedro"]
[Result "1-0"]
[ECO "B99"]
[EventDate "1975.10.18"]
[PlyCount "49"]

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.g4 b5 11.Bxf6 Nxf6 12.g5 Nd7 13.f5 Nc5 14.fxe6 fxe6 15.h4 
b4 16.Nce2 Rf8 17.Qh5+ g6 18.Qxh7 Nd3+ 19.Rxd3 Rxf1+ 20.Rd1 Rxd1+ 21.Kxd1 
e5 22.Qxg6+ Kd8 23.Qg8+ Kd7 24.Qe6+ Kd8 25.Qd5 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "4"]
[White "Bravo Sedamanos, Hector"]
[Black "Bronstein, Luis Marcos"]
[Result "0-1"]
[BlackElo "2355"]
[ECO "C88"]
[EventDate "1975.10.18"]
[PlyCount "80"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d4 exd4 6.O-O Be7 7.Re1 O-O 8.e5 
Ne8 9.Nxd4 Nxd4 10.Qxd4 b5 11.Bb3 c5 12.Qe4 Qb6 13.Nc3 Bb7 14.Bd5 Bc6 15.
e6 fxe6 16.Bxc6 Nf6 17.Qf3 Rae8 18.Be4 c4 19.Be3 Bc5 20.Bxc5 Qxc5 21.Qe3 
Qxe3 22.Rxe3 d5 23.Bf3 d4 24.Ree1 dxc3 25.bxc3 e5 26.a4 e4 27.Be2 Nd5 28.
Ra3 Rf6 29.Rd1 Re5 30.axb5 axb5 31.Rb1 Nf4 32.Bf1 e3 33.fxe3 Nd5 34.Rxb5 
Nxe3 35.Rb8+ Kf7 36.Be2 Nxc2 37.Bxc4+ Kg6 38.Rb1 Nxa3 39.Bd3+ Kh6 40.Ra1 
Nb5 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "4"]
[White "Camara, Helder"]
[Black "Segal, Alexandru Sorin"]
[Result "1/2-1/2"]
[WhiteElo "2340"]
[BlackElo "2385"]
[ECO "A56"]
[EventDate "1975.10.18"]
[PlyCount "46"]

1.d4 Nf6 2.c4 c5 3.d5 e5 4.Nc3 d6 5.e4 a6 6.Be2 Be7 7.h3 Nbd7 8.Nf3 O-O 9.
Nh2 Rb8 10.a4 Ne8 11.Be3 Bg5 12.Qd2 Bxe3 13.Qxe3 Ndf6 14.O-O Qe7 15.f4 
exf4 16.Rxf4 Nd7 17.Qg3 Ne5 18.Raf1 Ng6 19.R4f2 Nf6 20.Kh1 Qe5 21.Qe3 Qd4 
22.Qg3 Qe5 23.Qe3 Qd4 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "4"]
[White "Donoso Velasco, Pedro"]
[Black "Panno, Oscar"]
[Result "1/2-1/2"]
[WhiteElo "2380"]
[BlackElo "2545"]
[ECO "B84"]
[EventDate "1975.10.18"]
[PlyCount "82"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 a6 7.O-O Nbd7 8.f4 b5
9.Bf3 Bb7 10.Re1 Rc8 11.a4 bxa4 12.Nxa4 Be7 13.b3 O-O 14.Bb2 Nc5 15.Nc3 
Qb6 16.Kh1 Rfd8 17.Qe2 g6 18.Qe3 Bf8 19.f5 e5 20.Nde2 Ncd7 21.Qxb6 Nxb6 
22.g4 gxf5 23.gxf5 Bg7 24.Ng3 Rd7 25.Rad1 a5 26.Re2 Bh6 27.Nh5 Nxh5 28.
Bxh5 f6 29.Bf3 Bc6 30.Ba3 Bf8 31.Red2 Rcd8 32.Rg2+ Kh8 33.Rdg1 Bh6 34.Nd5 
Bxd5 35.exd5 a4 36.bxa4 Nxa4 37.c4 Be3 38.Rb1 Bc5 39.Bc1 Nb6 40.Be2 Ra7 
41.Bh6 Bd4 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "4"]
[White "Gamarra Caceres, Carlos"]
[Black "Quinteros, Miguel Angel"]
[Result "0-1"]
[BlackElo "2505"]
[ECO "B97"]
[EventDate "1975.10.18"]
[PlyCount "84"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Qb6 8.Qd2 
Qxb2 9.Nb3 Nbd7 10.Bxf6 gxf6 11.Be2 Qa3 12.O-O Nc5 13.f5 Nxb3 14.cxb3 Bd7 
15.fxe6 Qc5+ 16.Kh1 fxe6 17.Rf3 Qe5 18.Rd1 b5 19.Rh3 h5 20.Qe1 Rc8 21.b4 
h4 22.Nb1 Qf4 23.Nd2 Rc2 24.e5 Bc6 25.Bf3 fxe5 26.Rc1 Qxd2 27.Bxc6+ Ke7 
28.Qxd2 Rxd2 29.Bb7 Kf6 30.Rf3+ Kg5 31.g3 h3 32.Ra3 Rh7 33.Be4 Rf7 34.g4 
d5 35.Bb1 Rc7 36.Rg1 Rg7 37.Rxa6 Bxb4 38.Rxe6 Bc3 39.Rb6 Bd4 40.Rf1 Bxb6 
41.Rf5+ Kxg4 42.Rf1 Rf7 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "4"]
[White "Gouveia, Carlos Eduardo"]
[Black "Stekel Grunberg, Moises"]
[Result "1-0"]
[BlackElo "2350"]
[ECO "B08"]
[EventDate "1975.10.18"]
[PlyCount "55"]

1.e4 g6 2.d4 d6 3.Nc3 Bg7 4.Nf3 Nf6 5.Be2 c6 6.a4 O-O 7.O-O Nbd7 8.h3 e5 
9.dxe5 Nxe5 10.Bf4 Qe7 11.Qd2 Ne8 12.Nd4 Be6 13.Nxe6 Qxe6 14.b3 Nc7 15.Be3
Rfd8 16.Rae1 d5 17.exd5 Nxd5 18.Nxd5 Qxd5 19.Qb4 b6 20.Qh4 f6 21.f4 Qe4 
22.Bxb6 axb6 23.Bc4+ Nxc4 24.Rxe4 Nd2 25.Qe1 Nxf1 26.Kxf1 f5 27.Re7 Rd6 
28.Rxg7+ 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "4"]
[White "Szmetan, Jorge"]
[Black "Emma, Jaime"]
[Result "1/2-1/2"]
[WhiteElo "2435"]
[BlackElo "2405"]
[ECO "D35"]
[EventDate "1975.10.18"]
[PlyCount "26"]

1.Nf3 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.d4 Nbd7 6.Bg5 h6 7.Bf4 Bb4 8.Qb3 
c5 9.dxc5 Qa5 10.a3 Bxc3+ 11.Qxc3 Qxc3+ 12.bxc3 Ne4 13.e3 Ndxc5 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "4"]
[White "Trois, Francisco"]
[Black "Sanguineti, Raul"]
[Result "1/2-1/2"]
[WhiteElo "2310"]
[BlackElo "2530"]
[ECO "B78"]
[EventDate "1975.10.18"]
[PlyCount "66"]

1.Nf3 g6 2.e4 c5 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be3 Bg7 7.f3 Nc6 8.Bc4 
O-O 9.Qd2 Bd7 10.O-O-O Qc7 11.Bb3 Rfc8 12.g4 Ne5 13.h4 Nc4 14.Bxc4 Qxc4 
15.h5 b5 16.Kb1 b4 17.Nce2 a5 18.Bh6 Bh8 19.Nf5 Re8 20.Ne3 Qc5 21.Nf4 Bb5 
22.hxg6 fxg6 23.Ned5 e6 24.Nxf6+ Bxf6 25.Qxd6 Qc4 26.Nd3 Ra7 27.Be3 Rc7 
28.Rd2 Rd7 29.Ne5 Rxd6 30.Nxc4 Rxd2 31.Nxd2 Rd8 32.g5 Be7 33.Re1 e5 
1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "4"]
[White "Van Riemsdijk, Herman Claudius"]
[Black "Silva Sanchez, Carlos"]
[Result "1/2-1/2"]
[WhiteElo "2370"]
[BlackElo "2355"]
[ECO "B97"]
[EventDate "1975.10.18"]
[PlyCount "121"]

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.Be2 b5 12.Bxf6 Nxf6 13.a3 Rb8 14.g4 b4 15.
axb4 Rxb4 16.g5 Nd7 17.h4 Nc5 18.Nxc5 dxc5 19.f5 Bd6 20.Rxd6 Qxd6 21.f6 
gxf6 22.gxf6 Rg8 23.e5 Qxe5 24.Bb5+ Kd8 25.Qd3+ Rd4 26.Qxh7 Rg1+ 27.Rxg1 
Qe3+ 28.Kb1 Qxg1+ 29.Ka2 axb5 30.Qxf7 Rd7 31.Qf8+ Kc7 32.f7 Qf2 33.Nxb5+ 
Kb8 34.Nd6 Ra7+ 35.Kb3 c4+ 36.Kb4 Qd2+ 37.c3 Qxb2+ 38.Kc5 Rc7+ 39.Kd4 Qf2+
40.Ke4 Qxh4+ 41.Kf3 Qf6+ 42.Kg2 Qg5+ 43.Kf3 Qd5+ 44.Kg3 Qe5+ 45.Kg4 Qe2+ 
46.Kg3 Qe3+ 47.Kg4 e5+ 48.Kh5 Rc6 49.Qe7 Qh3+ 50.Kg5 Qg3+ 51.Kh5 Qf3+ 52.
Kh6 Qh3+ 53.Kg5 Qe3+ 54.Kf6 Qh6+ 55.Kxe5 Qg7+ 56.Kd5 Qg2+ 57.Ne4 Re6 58.
Qb4+ Bb7+ 59.Kxe6 Qxe4+ 60.Kf6 Qf4+ 61.Kg6 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "5"]
[White "Bronstein, Luis Marcos"]
[Black "Donoso Velasco, Pedro"]
[Result "1-0"]
[WhiteElo "2355"]
[BlackElo "2380"]
[ECO "D67"]
[EventDate "1975.10.18"]
[PlyCount "121"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bg5 O-O 6.e3 Nbd7 7.Rc1 c6 8.Bd3 
dxc4 9.Bxc4 Nd5 10.Bf4 Nxf4 11.exf4 Nb6 12.Bd3 Nd5 13.g3 Bd7 14.h4 f5 15.
Nxd5 exd5 16.O-O Bd6 17.Re1 Qf6 18.Qb3 Rab8 19.Qa4 a6 20.Qa5 Qd8 21.Qc3 
Qb6 22.Qc2 g6 23.h5 Rbd8 24.Kg2 Bc8 25.Rh1 Rf6 26.Rh4 Bf8 27.Rch1 Bg7 28.
hxg6 hxg6 29.Qc1 Rff8 30.R1h2 c5 31.Qh1 c4 32.Rh8+ Kf7 33.Ng5+ Ke7 34.R2h7
Rxh8 35.Rxg7+ Kd6 36.Nf7+ Kc6 37.Nxh8 Qxd4 38.Rxg6+ Kc7 39.Nf7 cxd3 40.
Nxd8 Qe4+ 41.f3 Qe2+ 42.Kh3 Qxb2 43.Qg1 d2 44.Qc5+ Kb8 45.Qd6+ Ka7 46.Qc7 
Qc1 47.Nc6+ Qxc6 48.Rxc6 d1=Q 49.Qb6+ Kb8 50.Qc7+ Ka7 51.Kh4 Qxf3 52.Qb6+ 
Kb8 53.Qc7+ Ka7 54.Rg6 Qh1+ 55.Kg5 Qh8 56.Qc5+ Kb8 57.Qxd5 Qh2 58.Qe5+ Ka7
59.Qe3+ Kb8 60.Rg8 Qc2 61.Qe8 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "5"]
[White "Emma, Jaime"]
[Black "Bravo Sedamanos, Hector"]
[Result "1-0"]
[WhiteElo "2405"]
[ECO "D46"]
[EventDate "1975.10.18"]
[PlyCount "117"]

1.Nf3 d5 2.c4 c6 3.b3 Nf6 4.Bb2 e6 5.e3 Bd6 6.Nc3 O-O 7.Qc2 Nbd7 8.d4 Qe7 
9.Bd3 e5 10.cxd5 cxd5 11.dxe5 Nxe5 12.Nxe5 Bxe5 13.Nb5 Bd7 14.Bxe5 Qxe5 
15.Nd4 Rac8 16.Qd2 Qh5 17.O-O Ng4 18.h3 Nf6 19.Rfc1 Qg5 20.Nf3 Qh5 21.Rxc8
Rxc8 22.Rc1 Rxc1+ 23.Qxc1 g6 24.Qc3 Kg7 25.Ne5 Be6 26.g4 Qxh3 27.g5 Ne8 
28.Nxg6+ f6 29.gxf6+ Nxf6 30.Qc7+ Kh6 31.Qf4+ Kg7 32.Ne5 h6 33.Qb4 Ng8 34.
Qxb7+ Kf6 35.Qb4 Bf5 36.Qd6+ Kg7 37.Qxd5 Bxd3 38.Qxd3 Kf6 39.Qd4 Qf5 40.
Nc6+ Ke6 41.Qc4+ Kd6 42.Nxa7 Qg6+ 43.Kh2 Qh5+ 44.Kg3 Nf6 45.Qc6+ Ke7 46.
Nc8+ Kf7 47.Qc4+ Kg7 48.Qc7+ Kg8 49.Qd8+ Kf7 50.Qe7+ Kg6 51.Qe6 Kg7 52.Ne7
Qg5+ 53.Kh3 Kf8 54.a4 Qh5+ 55.Kg2 Qg5+ 56.Kf1 Kg7 57.Nf5+ Kg6 58.Nd6 Kg7 
59.Qxf6+ 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "5"]
[White "Garcia Toledo, Pedro"]
[Black "Gouveia, Carlos Eduardo"]
[Result "0-1"]
[ECO "C67"]
[EventDate "1975.10.18"]
[PlyCount "118"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 6.Re1 Nd6 7.Bxc6 dxc6 8.
dxe5 Nf5 9.Qxd8+ Bxd8 10.b3 Be7 11.Bb2 Be6 12.Nc3 O-O-O 13.Rad1 h6 14.h3 
c5 15.Rxd8+ Rxd8 16.Rd1 Nd4 17.Nxd4 cxd4 18.Ne2 Bf5 19.Rxd4 Bxc2 20.Rxd8+ 
Kxd8 21.Kf1 a5 22.Ke1 a4 23.Nd4 Bb1 24.bxa4 Bxa2 25.Nf5 Bf8 26.Bc3 g6 27.
Nd4 Bc4 28.g3 Kd7 29.Kd2 Bf1 30.h4 h5 31.e6+ fxe6 32.Nf3 Bc5 33.Ke1 Bg2 
34.Ne5+ Kd6 35.Nxg6 Bc6 36.a5 Be8 37.Nf4 e5 38.Nd3 Bd4 39.Bd2 Bb5 40.Nc1 
c5 41.f3 Bd7 42.Ne2 Kd5 43.Nc3+ Kc4 44.Ne4 Kd3 45.Bg5 Bc6 46.g4 hxg4 47.
Nf2+ Bxf2+ 48.Kxf2 Bxf3 49.Kg3 e4 50.Kf2 Bd1 51.Bf4 Bb3 52.h5 Be6 53.h6 
Bf5 54.Bg5 c4 55.Bf4 c3 56.Bg5 Kc2 57.Kg3 Kd1 58.Kf4 Bh7 59.Ke5 g3 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "5"]
[White "Panno, Oscar"]
[Black "Gamarra Caceres, Carlos"]
[Result "1-0"]
[WhiteElo "2545"]
[ECO "A61"]
[EventDate "1975.10.18"]
[PlyCount "73"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.Bg5 h6 8.Bh4 Bg7 
9.e3 g5 10.Bg3 Nh5 11.Bb5+ Kf8 12.a4 Nxg3 13.hxg3 Nd7 14.Nd2 Ne5 15.Be2 
Qe7 16.Qc2 Bd7 17.Nd1 Kg8 18.e4 g4 19.Rh5 Qe8 20.Ne3 f5 21.Rxf5 Bxf5 22.
Nxf5 Bf8 23.f4 gxf3 24.gxf3 a6 25.f4 Nf7 26.Bh5 Qd8 27.O-O-O Qf6 28.Nc4 
Rh7 29.a5 Be7 30.Bg6 Rg7 31.Nxg7 Qxg7 32.Bxf7+ Kxf7 33.Qb3 Rb8 34.e5 Qg6 
35.exd6 Bxd6 36.Qb6 Be7 37.Ne5+ 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "5"]
[White "Quinteros, Miguel Angel"]
[Black "Camara, Helder"]
[Result "1-0"]
[WhiteElo "2505"]
[BlackElo "2340"]
[ECO "B42"]
[EventDate "1975.10.18"]
[PlyCount "65"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 Nc6 6.Nxc6 dxc6 7.f4 e5 8.f5 h5
9.Nd2 Bc5 10.Nf3 Nf6 11.Qe2 Ng4 12.Rf1 Qb6 13.c3 Qc7 14.a4 Bd7 15.h3 Nf6 
16.Ng5 b5 17.Bc2 Ke7 18.Bb3 Rhf8 19.g4 hxg4 20.hxg4 Rad8 21.Nxf7 Rxf7 22.
Bxf7 Kxf7 23.g5 Ng8 24.Qh5+ Kf8 25.f6 Be6 26.f7 Bxf7 27.g6 Nf6 28.Qh8+ Bg8
29.Rxf6+ gxf6 30.Bh6+ Ke7 31.Qg7+ Kd6 32.Rd1+ Bd4 33.Rxd4+ 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "5"]
[White "Sanguineti, Raul"]
[Black "Szmetan, Jorge"]
[Result "1-0"]
[WhiteElo "2530"]
[BlackElo "2435"]
[ECO "A38"]
[EventDate "1975.10.18"]
[PlyCount "67"]

1.Nf3 g6 2.d4 Nf6 3.c4 c5 4.Nc3 cxd4 5.Nxd4 Nc6 6.g3 Bg7 7.Bg2 O-O 8.e3 
Nxd4 9.exd4 d6 10.O-O Rb8 11.h3 a6 12.a4 Bd7 13.Qe2 Re8 14.Be3 Qa5 15.Rfc1
e6 16.Rab1 Qb4 17.b3 Bc6 18.Na2 Qa5 19.b4 Qd8 20.b5 axb5 21.axb5 Bxg2 22.
Kxg2 Ra8 23.Nb4 Qd7 24.c5 dxc5 25.dxc5 Rec8 26.c6 bxc6 27.bxc6 Qe8 28.Bd4 
Nd5 29.Bxg7 Nxb4 30.Rxb4 Kxg7 31.Qe5+ Kg8 32.c7 Qf8 33.Rcb1 Qg7 34.Qxg7+ 
1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "5"]
[White "Segal, Alexandru Sorin"]
[Black "Benitez Ayestaran, Otto"]
[Result "1/2-1/2"]
[WhiteElo "2385"]
[ECO "E03"]
[EventDate "1975.10.18"]
[PlyCount "59"]

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Qa4+ Nbd7 6.Qxc4 a6 7.Qc2 c5 8.Nf3 
b5 9.dxc5 Bxc5 10.O-O Bb7 11.Nc3 Rc8 12.Qd3 Qb6 13.a3 Ng4 14.Nd1 Nde5 15.
Nxe5 Nxe5 16.Qb3 Bxg2 17.Kxg2 O-O 18.Be3 Nc4 19.Bxc5 Rxc5 20.Re1 Rd8 21.
Ne3 h6 22.Nxc4 Rxc4 23.Rad1 Rcd4 24.Rxd4 Qxd4 25.Rc1 Qe5 26.Rc2 Qe4+ 27.f3
Qe5 28.Kf2 Qf5 29.Kg2 Kh7 30.Qc3 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "5"]
[White "Silva Sanchez, Carlos"]
[Black "Trois, Francisco"]
[Result "0-1"]
[WhiteElo "2355"]
[BlackElo "2310"]
[ECO "C60"]
[EventDate "1975.10.18"]
[PlyCount "112"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 g6 4.d4 Nxd4 5.Nxd4 exd4 6.Qxd4 Qf6 7.Qxf6 Nxf6 8.
Nc3 a6 9.Be2 d6 10.Bf4 Bg7 11.e5 dxe5 12.Bxe5 O-O 13.Bxc7 Re8 14.O-O-O Ng4
15.Bf3 Nxf2 16.Rde1 Bg4 17.Rhf1 Bxf3 18.gxf3 Bxc3 19.bxc3 Nh3 20.Be5 Re6 
21.Bd4 Rae8 22.Rxe6 Rxe6 23.Kd2 Nf4 24.Rf2 f6 25.c4 Kf7 26.Be3 Rd6+ 27.Kc3
Ne6 28.Rf1 g5 29.Rb1 Rd7 30.c5 Nd8 31.h4 gxh4 32.Rh1 h5 33.Rxh4 Kg6 34.Bf4
Ne6 35.Bd6 Ng5 36.Rc4 Rh7 37.c6 bxc6 38.Ra4 Nxf3 39.Rxa6 h4 40.Rxc6 h3 41.
a4 Rd7 42.Bb8 Rd8 43.Rb6 Kg5 44.a5 Ne5 45.Rb1 h2 46.Bxe5 fxe5 47.Rh1 Rh8 
48.Kc4 Kf4 49.Kd5 e4 50.a6 e3 51.a7 Rd8+ 52.Kc6 Kg3 53.Kc7 Rh8 54.Re1 Kf2 
55.Ra1 e2 56.a8=Q Rxa8 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "5"]
[White "Stekel Grunberg, Moises"]
[Black "Van Riemsdijk, Herman Claudius"]
[Result "0-1"]
[WhiteElo "2350"]
[BlackElo "2370"]
[ECO "A09"]
[EventDate "1975.10.18"]
[PlyCount "88"]

1.c4 Nf6 2.g3 d5 3.Nf3 dxc4 4.Bg2 Nc6 5.Qa4 Bd7 6.Qxc4 e5 7.Nc3 Be7 8.O-O 
O-O 9.Qb3 a6 10.d3 h6 11.Bd2 Be6 12.Qa4 Qd7 13.Rfc1 Bh3 14.Ne4 Nxe4 15.
Qxe4 Bxg2 16.Kxg2 Bd6 17.b4 f5 18.Qc4+ Kh7 19.b5 axb5 20.Qxb5 e4 21.Ne1 
Qe6 22.Qc4 Qxc4 23.Rxc4 Ne5 24.Rd4 Nc6 25.Rc4 Na5 26.Ra4 Nc6 27.Rc4 Ra6 
28.dxe4 b5 29.Rcc1 fxe4 30.Bc3 Ne5 31.Bxe5 Bxe5 32.Rab1 Rxa2 33.Rc2 Rxc2 
34.Nxc2 Rb8 35.Rb4 c5 36.Rxe4 Bb2 37.Ne3 b4 38.Nc4 Bd4 39.e3 Bf6 40.Re6 b3
41.Rc6 Rb5 42.Nd2 b2 43.Nb1 Ra5 44.Nd2 Bc3 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "6"]
[White "Benitez Ayestaran, Otto"]
[Black "Quinteros, Miguel Angel"]
[Result "0-1"]
[BlackElo "2505"]
[ECO "B51"]
[EventDate "1975.10.18"]
[PlyCount "86"]

1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.d4 Nf6 5.Nc3 a6 6.Bxd7+ Nxd7 7.O-O e6 8.Be3 
b5 9.d5 e5 10.Nd2 Be7 11.f4 exf4 12.Bxf4 O-O 13.Qe2 c4 14.Nf3 Bf6 15.Kh1 
Qc7 16.Rae1 Re8 17.Qd2 Ne5 18.Nd1 Bd7 19.Nd4 Ng6 20.Nf5 Bxf5 21.exf5 Nxf4 
22.Qxf4 Qc5 23.Qf3 b4 24.Re4 Re5 25.Rfe1 Qa5 26.g4 Qxd5 27.Qg2 Rxe4 28.
Qxe4 Qxe4+ 29.Rxe4 d5 30.Re2 Kf8 31.b3 cxb3 32.axb3 Rc8 33.Nf2 a5 34.Kg2 
Rc3 35.Nd1 Rc5 36.Kf3 h6 37.Ke3 Ke7 38.Kd3+ Kd7 39.Re3 Bg5 40.Re5 Bf6 41.
Re2 Rc8 42.Re3 Kd6 43.Re2 Be5 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "6"]
[White "Bravo Sedamanos, Hector"]
[Black "Sanguineti, Raul"]
[Result "0-1"]
[BlackElo "2530"]
[ECO "B44"]
[EventDate "1975.10.18"]
[PlyCount "176"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e6 5.Nb5 d6 6.c4 Nf6 7.N1c3 a6 8.Na3 
Be7 9.Be2 O-O 10.O-O b6 11.Be3 Bb7 12.f3 Re8 13.Qb3 Nd7 14.Rfd1 Nc5 15.Qc2
Qc7 16.Rac1 Rac8 17.Qb1 Nb4 18.Nc2 Nxc2 19.Rxc2 Bf6 20.Bf4 Be5 21.Bxe5 
dxe5 22.b4 Nd7 23.Rcd2 Nb8 24.Qd3 Nc6 25.Qd6 Nd4 26.Qxc7 Rxc7 27.Bf1 g5 
28.Kf2 Bc6 29.Rb1 Rd8 30.b5 axb5 31.Nxb5 Bxb5 32.Rxb5 Rb8 33.Rb1 Kg7 34.
Rdb2 Ra8 35.Rxb6 Rxa2+ 36.R6b2 Rca7 37.Be2 Kg6 38.Bd3 R7a3 39.Bf1 Rc3 40.
Rd2 h5 41.h3 Raa3 42.Rb8 Ra1 43.Rg8+ Kf6 44.Rh8 h4 45.Rc8 Rac1 46.Ra8 Kg6 
47.Rb2 R1c2+ 48.Rxc2 Rxc2+ 49.Kg1 f5 50.Re8 fxe4 51.fxe4 Nb3 52.Bd3 Rc3 
53.Be2 Nd2 54.Rd8 Rc1+ 55.Kh2 Nb3 56.Bg4 Nc5 57.Be2 Kf6 58.Bf3 Rxc4 59.Kg1
Nxe4 60.Bxe4 Rxe4 61.Kf1 Ra4 62.Rf8+ Kg6 63.g3 Ra1+ 64.Kg2 Ra2+ 65.Kg1 
hxg3 66.Rf3 g2 67.Rg3 Kf5 68.Rf3+ Ke4 69.Rf6 Ke3 70.Rxe6 Kf3 71.Kh2 g1=Q+ 
72.Kxg1 Kg3 73.Kf1 Ra1+ 74.Ke2 Kxh3 75.Rxe5 g4 76.Re8 g3 77.Kf3 Rf1+ 78.
Ke2 g2 79.Rh8+ Kg3 80.Rg8+ Kh2 81.Rh8+ Kg1 82.Rh5 Rf2+ 83.Ke1 Rf7 84.Rg5 
Re7+ 85.Kd2 Kf2 86.Rf5+ Kg3 87.Rg5+ Kf3 88.Rg8 Re4 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "6"]
[White "Camara, Helder"]
[Black "Panno, Oscar"]
[Result "1/2-1/2"]
[WhiteElo "2340"]
[BlackElo "2545"]
[ECO "E74"]
[EventDate "1975.10.18"]
[PlyCount "45"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 c5 7.d5 a6 8.a4 Qa5 9.
Bd2 e6 10.Nf3 exd5 11.exd5 Bg4 12.O-O Nbd7 13.h3 Bxf3 14.Bxf3 Qc7 15.Qc2 
Ne8 16.Rfe1 Be5 17.Bh6 Ng7 18.Bg4 f5 19.Be2 Rae8 20.Qd2 Nf6 21.Bd3 Qa5 22.
Ne4 Qxd2 23.Nxf6+ 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "6"]
[White "Donoso Velasco, Pedro"]
[Black "Emma, Jaime"]
[Result "1/2-1/2"]
[WhiteElo "2380"]
[BlackElo "2405"]
[ECO "B05"]
[EventDate "1975.10.18"]
[PlyCount "77"]

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Bg4 5.Be2 e6 6.O-O Be7 7.c4 Nb6 8.exd6 
cxd6 9.Be3 O-O 10.Nc3 d5 11.c5 Bxf3 12.Bxf3 Nc4 13.b3 Nxe3 14.fxe3 Nc6 15.
a3 Bg5 16.Qd3 Bh6 17.b4 a6 18.g3 f5 19.Bg2 g5 20.b5 axb5 21.Nxb5 g4 22.
Rab1 Na5 23.Nd6 Qg5 24.Rfe1 Rfb8 25.Rb6 Bf8 26.Qb5 Bxd6 27.Rxd6 Qe7 28.Bf1
Rd8 29.Rxd8+ Qxd8 30.a4 h5 31.Rb1 h4 32.Qb6 Qxb6 33.Rxb6 hxg3 34.Rxe6 Nc4 
35.Bd3 f4 36.exf4 Rxa4 37.Rg6+ Kf7 38.Rxg4 Na5 39.f5 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "6"]
[White "Gamarra Caceres, Carlos"]
[Black "Bronstein, Luis Marcos"]
[Result "0-1"]
[BlackElo "2355"]
[ECO "C99"]
[EventDate "1975.10.18"]
[PlyCount "106"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 
9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 cxd4 13.cxd4 Bb7 14.d5 Nh5 15.Nf1 g6 
16.Bh6 Rfc8 17.Bd3 Nc4 18.Bxc4 Qxc4 19.Qd2 Qc2 20.Rec1 Qxd2 21.N1xd2 f5 
22.Bg5 Bxg5 23.Nxg5 Nf4 24.Kf1 h6 25.Ngf3 Nd3 26.Rxc8+ Rxc8 27.a4 bxa4 28.
Rxa4 Rc1+ 29.Ke2 Nf4+ 30.Ke3 Nxg2+ 31.Ke2 Nf4+ 32.Ke3 fxe4 33.Nxe4 Nxd5+ 
34.Kd2 Rc6 35.Ra5 Rb6 36.Rxd5 Bxd5 37.Nf6+ Kf7 38.Nxd5 Rxb2+ 39.Ke3 a5 40.
Nc3 Ke6 41.Nd2 d5 42.Na4 Rb4 43.Nc5+ Kd6 44.Nd3 Rh4 45.Nxe5 Rxh3+ 46.Nef3 
a4 47.Kd3 g5 48.Kc2 g4 49.Nd4 h5 50.Nf1 a3 51.Ne3 Rxe3 52.fxe3 Ke5 53.Ne2 
h4 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "6"]
[White "Gouveia, Carlos Eduardo"]
[Black "Segal, Alexandru Sorin"]
[Result "1/2-1/2"]
[BlackElo "2385"]
[ECO "E14"]
[EventDate "1975.10.18"]
[PlyCount "146"]

1.c4 Nf6 2.Nc3 b6 3.Nf3 Bb7 4.e3 e6 5.d4 Be7 6.Be2 O-O 7.O-O d5 8.cxd5 
Nxd5 9.Bd2 Nd7 10.Nxd5 Bxd5 11.Qa4 a6 12.Rfd1 c5 13.dxc5 Nxc5 14.Qf4 Ne4 
15.Bc3 Nxc3 16.bxc3 Qb8 17.Qxb8 Rfxb8 18.c4 Bc6 19.Rab1 Ba4 20.Rd2 Bc5 21.
Ne5 Rd8 22.Nd3 Rac8 23.Bd1 Bc6 24.Bf3 e5 25.Rdd1 e4 26.Nxc5 exf3 27.Nb3 
Rxd1+ 28.Rxd1 fxg2 29.Rd6 g6 30.Nd4 Be4 31.f3 Bd3 32.Kxg2 Rxc4 33.Rxb6 Ra4
34.Rb2 Bc4 35.Nb3 Rb4 36.Rc2 Bxb3 37.Rb2 Kf8 38.axb3 a5 39.Ra2 Rxb3 40.
Rxa5 Rxe3 41.Kf2 Re7 42.Kg3 Kg7 43.h4 Rb7 44.Rc5 Kh6 45.Ra5 f5 46.Ra4 Kh5 
47.Rc4 Rf7 48.Rc5 Ra7 49.Rc4 Ra1 50.Rb4 h6 51.Rc4 Rg1+ 52.Kh2 Rb1 53.Kg3 
Rb3 54.Ra4 Rd3 55.Rb4 Ra3 56.Rc4 Ra6 57.Rb4 Ra3 58.Rc4 g5 59.hxg5 hxg5 60.
Kg2 Ra2+ 61.Kg3 f4+ 62.Kh3 Ra3 63.Kg2 Kh4 64.Rc2 g4 65.fxg4 Kxg4 66.Rc8 
Ra2+ 67.Kf1 Kg3 68.Rf8 Kf3 69.Kg1 Ra1+ 70.Kh2 Re1 71.Rf7 Rd1 72.Rf8 Rd2+ 
73.Kg1 Rd1+ 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "6"]
[White "Silva Sanchez, Carlos"]
[Black "Stekel Grunberg, Moises"]
[Result "1-0"]
[WhiteElo "2355"]
[BlackElo "2350"]
[ECO "E95"]
[EventDate "1975.10.18"]
[PlyCount "71"]

1.e4 g6 2.d4 d6 3.Nf3 c6 4.c4 Bg7 5.Nc3 Nd7 6.Be2 e5 7.O-O Ngf6 8.Re1 O-O 
9.Bf1 Re8 10.d5 c5 11.a3 Ng4 12.h3 Nh6 13.b4 b6 14.Nb5 Nf8 15.bxc5 bxc5 
16.Qa4 a6 17.Nxd6 Bd7 18.Qc2 Re7 19.Be3 Qc7 20.Qd2 Qxd6 21.Bxh6 Bxh6 22.
Qxh6 Rb8 23.Rab1 f6 24.Qd2 Ree8 25.Qa5 Rec8 26.Bd3 g5 27.Nd2 Be8 28.Bc2 h5
29.Ba4 Bxa4 30.Qxa4 Nd7 31.Nf1 Kf7 32.Ng3 Rxb1 33.Rxb1 Rb8 34.Rxb8 Qxb8 
35.Qd1 g4 36.hxg4 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "6"]
[White "Trois, Francisco"]
[Black "Szmetan, Jorge"]
[Result "1-0"]
[WhiteElo "2310"]
[BlackElo "2435"]
[ECO "A37"]
[EventDate "1975.10.18"]
[PlyCount "97"]

1.Nf3 c5 2.c4 g6 3.Nc3 Bg7 4.g3 Nc6 5.Bg2 e6 6.O-O Nge7 7.e3 Nf5 8.Ne4 d6 
9.d4 O-O 10.dxc5 dxc5 11.Nxc5 b6 12.Nd3 Ba6 13.Qa4 Na5 14.Rd1 Qc7 15.e4 
Nd6 16.c5 Bxd3 17.Rxd3 Qxc5 18.e5 Qb5 19.Qd1 Ndb7 20.a4 Qc4 21.b3 Qc7 22.
Ba3 Rfd8 23.Rc1 Rxd3 24.Qxd3 Qd8 25.Qc2 Nc5 26.b4 Qd3 27.Qxd3 Nxd3 28.Rd1 
Nxf2 29.Kxf2 Nc4 30.Bc1 Bf8 31.Nd4 Rd8 32.Bg5 Rd7 33.Bf6 Rc7 34.b5 Bc5 35.
Bg5 Nxe5 36.Ke2 Nc4 37.Bc6 Rc8 38.Nf3 Bf8 39.Rd7 Na5 40.Ne5 Bg7 41.Bf4 f6 
42.Nf7 Nxc6 43.bxc6 Rxc6 44.Nd8 Rc4 45.Rxa7 f5 46.Be3 e5 47.Ra8 Bf6 48.Kd3
Rg4 49.Bxb6 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "6"]
[White "Van Riemsdijk, Herman Claudius"]
[Black "Garcia Toledo, Pedro"]
[Result "1/2-1/2"]
[WhiteElo "2370"]
[ECO "A12"]
[EventDate "1975.10.18"]
[PlyCount "76"]

1.c4 c6 2.g3 d5 3.Bg2 Nf6 4.Nf3 Bf5 5.b3 e6 6.d3 Be7 7.Bb2 O-O 8.Nh4 Bg4 
9.h3 Bh5 10.g4 Nfd7 11.Nf3 Bg6 12.Qd2 a5 13.Nc3 Na6 14.O-O Nac5 15.Rad1 
Qb8 16.e4 dxc4 17.bxc4 e5 18.d4 Nxe4 19.Nxe4 Bxe4 20.Rfe1 Bb4 21.Bc3 Bxf3 
22.Bxf3 Bxc3 23.Qxc3 Re8 24.d5 cxd5 25.Bxd5 Qc7 26.Rb1 b6 27.Rb5 Re7 28.
Reb1 e4 29.Qe3 Rae8 30.g5 Qd6 31.Kg2 Re5 32.Qf4 Qe7 33.Bc6 Rxb5 34.Rxb5 
Qe6 35.Bd5 Qe7 36.Bc6 Qe6 37.Bd5 Qe7 38.Bc6 Qe6 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "7"]
[White "Bronstein, Luis Marcos"]
[Black "Camara, Helder"]
[Result "1-0"]
[WhiteElo "2355"]
[BlackElo "2340"]
[ECO "C89"]
[EventDate "1975.10.18"]
[PlyCount "63"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 
9.exd5 e4 10.d4 exf3 11.dxc6 Bd6 12.h3 Re8 13.Rxe8+ Qxe8 14.Be3 fxg2 15.
Qf3 Be6 16.Nd2 a5 17.Bg5 Bxb3 18.axb3 Qe6 19.Bxf6 gxf6 20.Ne4 Be7 21.d5 
Qe5 22.Qg3+ Kh8 23.Qxe5 fxe5 24.Ng3 Kg7 25.Kxg2 Kg6 26.Re1 f6 27.f4 Bd6 
28.Ne4 Be7 29.fxe5 fxe5 30.Kf3 a4 31.bxa4 Rxa4 32.Rd1 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "7"]
[White "Emma, Jaime"]
[Black "Gamarra Caceres, Carlos"]
[Result "1-0"]
[WhiteElo "2405"]
[ECO "E73"]
[EventDate "1975.10.18"]
[PlyCount "53"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 h6 7.Bh4 Nbd7 8.f4 c5 
9.d5 a6 10.a4 Re8 11.Nf3 Qa5 12.O-O Qb4 13.Ra3 Nh5 14.Rb3 Qa5 15.Qc1 e5 
16.fxe5 Nxe5 17.Nxe5 Rxe5 18.Bxh5 Rxh5 19.Bf6 Bxf6 20.Rxf6 Qc7 21.Qf4 Re5 
22.a5 Qe7 23.Rb6 Bf5 24.Rbxd6 Bxe4 25.Rde6 Rxe6 26.dxe6 Bf5 27.Nd5 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "7"]
[White "Garcia Toledo, Pedro"]
[Black "Silva Sanchez, Carlos"]
[Result "1-0"]
[BlackElo "2355"]
[ECO "B87"]
[EventDate "1975.10.18"]
[PlyCount "101"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bc4 e6 7.O-O b5 8.Bb3 Bb7
9.Re1 Nbd7 10.Bg5 h6 11.Bxf6 Nxf6 12.a4 b4 13.Na2 Qa5 14.c3 bxc3 15.Nxc3 
Be7 16.Bxe6 fxe6 17.Nxe6 Bc8 18.b4 Qe5 19.Nc7+ Kf7 20.N3d5 Be6 21.f4 Qh5 
22.Nxe7 Qxd1 23.Raxd1 Bg4 24.Nxa8 Bxd1 25.Rxd1 Kxe7 26.Nb6 Nxe4 27.Re1 d5 
28.Nxd5+ Kd6 29.Rxe4 Kxd5 30.Re1 Rb8 31.Rb1 Kc4 32.b5 axb5 33.axb5 Rxb5 
34.Rxb5 Kxb5 35.Kf2 Kc5 36.Ke3 Kd5 37.g4 Kd6 38.Kd4 Ke6 39.Ke4 Kf6 40.Kd5 
Kf7 41.Ke5 Ke7 42.f5 Kf7 43.h4 Ke7 44.h5 Kf7 45.f6 gxf6+ 46.Kf5 Ke7 47.Kg6
Ke6 48.Kxh6 f5 49.gxf5+ Kf6 50.Kh7 Kf7 51.h6 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "7"]
[White "Panno, Oscar"]
[Black "Benitez Ayestaran, Otto"]
[Result "1/2-1/2"]
[WhiteElo "2545"]
[ECO "A07"]
[EventDate "1975.10.18"]
[PlyCount "99"]

1.g3 d5 2.Nf3 c6 3.Bg2 Bg4 4.d3 Nd7 5.Nbd2 e6 6.O-O Bd6 7.b3 Ne7 8.Bb2 O-O
9.h3 Bxf3 10.Nxf3 Ng6 11.e4 dxe4 12.dxe4 Qc7 13.Qe2 e5 14.h4 Rfe8 15.Rad1 
Nf6 16.Ne1 Rad8 17.Nd3 Nd7 18.Bc1 Nc5 19.Nb2 Ne6 20.c3 a5 21.Nd3 h6 22.Be3
Qe7 23.h5 Ngf8 24.f4 exf4 25.gxf4 f6 26.Qf2 Nd7 27.Qg3 Bc5 28.Nxc5 Nexc5 
29.Rd4 Ne6 30.Rd2 Ndc5 31.Rxd8 Nxd8 32.e5 fxe5 33.f5 Nd7 34.Bxh6 Nf6 35.
Be3 Nxh5 36.Qg4 Nf6 37.Qa4 Qc7 38.Rd1 Nf7 39.Qc4 Rd8 40.Re1 Nd5 41.Bd2 Qd6
42.Re2 Nf6 43.b4 axb4 44.cxb4 Qd3 45.Qxd3 Rxd3 46.b5 cxb5 47.Bxb7 Nd6 48.
Bc6 Nd5 49.Rxe5 Rxd2 50.Bxd5+ 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "7"]
[White "Quinteros, Miguel Angel"]
[Black "Gouveia, Carlos Eduardo"]
[Result "1/2-1/2"]
[WhiteElo "2505"]
[ECO "C41"]
[EventDate "1975.10.18"]
[PlyCount "133"]

1.e4 e5 2.Nf3 Qe7 3.Nc3 c6 4.d4 d6 5.h3 g6 6.a4 Bg7 7.dxe5 dxe5 8.a5 Nf6 
9.Be3 O-O 10.Bc4 Nbd7 11.O-O Nc5 12.Nd2 Ne6 13.Na4 Rd8 14.Bxe6 Bxe6 15.Nc5
Bc8 16.Qe2 g5 17.g4 Nd7 18.Nxd7 Bxd7 19.Nb3 f6 20.Bc5 Qf7 21.Qe3 h5 22.f3 
Be6 23.Bxa7 hxg4 24.hxg4 Bxb3 25.cxb3 Bf8 26.Bb6 Rd7 27.Rfd1 Bb4 28.Rxd7 
Qxd7 29.Qe2 Kg7 30.Kg2 Kg6 31.Rd1 Qe7 32.Qc4 Rh8 33.Rh1 Rxh1 34.Qg8+ Kh6 
35.Kxh1 Qd6 36.Qh8+ Kg6 37.Qg8+ Kh6 38.Qd8 Qe6 39.Kg2 Kg6 40.Qd3 Qe7 41.
Qc2 Qd6 42.a6 bxa6 43.Be3 a5 44.Kf2 c5 45.Ke2 Kg7 46.Qd3 Qc6 47.Qc4 Qd6 
48.Qb5 Qe6 49.Qb7+ Kg6 50.Qd5 Qa6+ 51.Kf2 Qb5 52.Qg8+ Kh6 53.Qf7 Qa6 54.
Qf8+ Kg6 55.Bxc5 Qd3 56.Bxb4 Qd4+ 57.Ke2 axb4 58.Qg8+ Kh6 59.Qc4 Qxb2+ 60.
Ke3 Qa3 61.Kd3 Qa1 62.Qxb4 Qf1+ 63.Ke3 Qg1+ 64.Ke2 Qg2+ 65.Ke3 Qg1+ 66.Ke2
Qg2+ 67.Ke3 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "7"]
[White "Sanguineti, Raul"]
[Black "Donoso Velasco, Pedro"]
[Result "1-0"]
[WhiteElo "2530"]
[BlackElo "2380"]
[ECO "D46"]
[EventDate "1975.10.18"]
[PlyCount "45"]

1.Nf3 Nf6 2.c4 c6 3.Nc3 d5 4.e3 e6 5.b3 Nbd7 6.Bb2 Be7 7.d4 O-O 8.Bd3 b6 
9.O-O Bb7 10.Qe2 Rc8 11.Rad1 Qc7 12.Ne5 dxc4 13.bxc4 Nxe5 14.dxe5 Ne8 15.
Qh5 g6 16.Qg4 Qxe5 17.Nd5 Qd6 18.Bxg6 hxg6 19.Nf4 Qc7 20.Nxg6 f5 21.Nxe7+ 
Kf7 22.Qg6+ Kxe7 23.Qg5+ 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "7"]
[White "Segal, Alexandru Sorin"]
[Black "Van Riemsdijk, Herman Claudius"]
[Result "1/2-1/2"]
[WhiteElo "2385"]
[BlackElo "2370"]
[ECO "E59"]
[EventDate "1975.10.18"]
[PlyCount "50"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 c5 7.O-O Nc6 8.a3 Bxc3 
9.bxc3 dxc4 10.Bxc4 Qc7 11.Bd3 e5 12.Qc2 Re8 13.Nxe5 Nxe5 14.dxe5 Qxe5 15.
f3 Bd7 16.Rb1 Bc6 17.c4 Rad8 18.Re1 Rd7 19.Bb2 Qe7 20.Rbd1 h6 21.Bf5 Rxd1 
22.Qxd1 Rd8 23.Qc2 Ne8 24.Qf2 Ba4 25.Bb1 Bb3 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "7"]
[White "Stekel Grunberg, Moises"]
[Black "Trois, Francisco"]
[Result "1/2-1/2"]
[WhiteElo "2350"]
[BlackElo "2310"]
[ECO "A26"]
[EventDate "1975.10.18"]
[PlyCount "83"]

1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Rb1 a5 6.d3 d6 7.Nf3 Nf6 8.O-O O-O 
9.a3 Re8 10.e4 Bg4 11.h3 Bxf3 12.Bxf3 Nd7 13.Bg4 Nd4 14.Ne2 c6 15.Nxd4 
exd4 16.f4 Nc5 17.Qc2 Qb6 18.Kg2 Qb3 19.Qxb3 Nxb3 20.Bd1 Nc5 21.Bc2 f5 22.
exf5 gxf5 23.b4 axb4 24.axb4 Na4 25.Bxa4 Rxa4 26.Kf3 h5 27.b5 c5 28.g4 
hxg4+ 29.hxg4 fxg4+ 30.Kxg4 Kf7 31.Kf3 Bf6 32.Rh1 Ra2 33.f5 Re5 34.Rh5 Re1
35.Rh7+ Ke8 36.Rxb7 Rc2 37.Ra1 Rcxc1 38.Ra8+ Bd8 39.Rbb8 Re3+ 40.Kf4 Rf1+ 
41.Kg4 Rg1+ 42.Kf4 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "7"]
[White "Szmetan, Jorge"]
[Black "Bravo Sedamanos, Hector"]
[Result "1-0"]
[WhiteElo "2435"]
[ECO "C68"]
[EventDate "1975.10.18"]
[PlyCount "105"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O Ne7 6.Nxe5 Qd4 7.Qh5 g6 8.Qg5
Bg7 9.Nd3 f5 10.e5 c5 11.b3 h6 12.Qe3 f4 13.Qxd4 cxd4 14.Nxf4 Bxe5 15.Nd3 
Bf6 16.Nc5 Kf7 17.d3 Nd5 18.a4 Bf5 19.Nd2 Nb4 20.Bb2 Rhe8 21.Nce4 Bg7 22.
a5 Rad8 23.Ra4 Nc6 24.f3 Rd5 25.g4 Bd7 26.Rfa1 Kg8 27.Rc4 Ree5 28.b4 Rb5 
29.Nb3 Red5 30.Ba3 Kf7 31.Nec5 Be8 32.f4 Bf8 33.Re1 Rd6 34.Re4 Bg7 35.Kf2 
Bf6 36.Kg3 Bg7 37.Nd2 Bf6 38.Nf3 Bg7 39.h3 Bh8 40.h4 Bg7 41.Re2 Bh8 42.Re4
Bf6 43.Nb3 Rbd5 44.Nc5 Nd8 45.Ne5+ Kg8 46.Bb2 g5 47.hxg5 hxg5 48.Nf3 gxf4+
49.Rxf4 Be5 50.Nxe5 Rxe5 51.Ne4 Rc6 52.Nf6+ Kg7 53.Bxd4 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "8"]
[White "Benitez Ayestaran, Otto"]
[Black "Bronstein, Luis Marcos"]
[Result "0-1"]
[BlackElo "2355"]
[ECO "C69"]
[EventDate "1975.10.18"]
[PlyCount "46"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O f6 6.d4 exd4 7.Nxd4 c5 8.Nb3 
Qxd1 9.Rxd1 Bd7 10.Bf4 O-O-O 11.Nc3 Be6 12.Rxd8+ Kxd8 13.Rd1+ Kc8 14.Nd5 
Bxd5 15.Rxd5 b6 16.Nd2 Ne7 17.Rd3 Nc6 18.c3 g5 19.Bg3 h5 20.h3 Bh6 21.Nc4 
g4 22.Ne3 h4 23.Bh2 g3 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "8"]
[White "Camara, Helder"]
[Black "Emma, Jaime"]
[Result "0-1"]
[WhiteElo "2340"]
[BlackElo "2405"]
[ECO "B34"]
[EventDate "1975.10.18"]
[PlyCount "54"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Be3 Nf6 7.Nxc6 bxc6 8.
Bc4 Qc7 9.O-O O-O 10.f4 Nxe4 11.Nxe4 d5 12.Bd4 Bxd4+ 13.Qxd4 dxc4 14.Kh1 
Rd8 15.Qc3 Bf5 16.Rae1 Rd5 17.Ng3 Rad8 18.Qxc4 h5 19.Qc3 h4 20.Nxf5 Rxf5 
21.Re4 Rxf4 22.Qe1 Rxf1+ 23.Qxf1 Rd2 24.Qe1 Qd6 25.Qxh4 Rd1+ 26.Re1 Qd2 
27.Rg1 Rxg1+ 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "8"]
[White "Donoso Velasco, Pedro"]
[Black "Szmetan, Jorge"]
[Result "1-0"]
[WhiteElo "2380"]
[BlackElo "2435"]
[ECO "B92"]
[EventDate "1975.10.18"]
[PlyCount "81"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 Nbd7 7.O-O Nc5 8.Bf3 
e6 9.Re1 Qc7 10.Bg5 Be7 11.Qe2 h6 12.Be3 Ncd7 13.Rad1 Ne5 14.a4 O-O 15.Bc1
Bd7 16.Bh5 Rfd8 17.f4 Nc6 18.Nb3 Nxh5 19.Qxh5 Bf6 20.Re3 Be8 21.Rg3 Kh7 
22.f5 Ne5 23.Rf1 Qe7 24.Rh3 Kg8 25.Bxh6 gxh6 26.Qxh6 Bg7 27.Rg3 Ng6 28.Qh3
d5 29.fxg6 fxg6 30.exd5 exd5 31.Re3 Qd7 32.Qh4 Qc7 33.Rh3 Be5 34.Rhf3 Bc6 
35.Nd4 Re8 36.Nce2 Re7 37.Qh6 Bg7 38.Qxg6 Rae8 39.Nf5 Re6 40.Nh6+ Kh8 41.
Rf8+ 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "8"]
[White "Gamarra Caceres, Carlos"]
[Black "Sanguineti, Raul"]
[Result "0-1"]
[BlackElo "2530"]
[ECO "C67"]
[EventDate "1975.10.18"]
[PlyCount "84"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.Bxc6 dxc6 7.dxe5 Nf5 8.
Qe2 Nd4 9.Nxd4 Qxd4 10.Rd1 Bg4 11.Rxd4 Bxe2 12.Nc3 Bh5 13.Bg5 h6 14.Bh4 
Be7 15.Bxe7 Kxe7 16.f3 Rhd8 17.Ne2 Bg6 18.c3 c5 19.Rdd1 Bc2 20.Rxd8 Rxd8 
21.Kf2 Bg6 22.Ke1 Ke6 23.f4 Be4 24.g3 g5 25.Nc1 gxf4 26.gxf4 Kf5 27.Ne2 
Bf3 28.Kf2 Ke4 29.Ng1 Rd2+ 30.Kg3 Bd1 31.Nh3 Kf5 32.Nf2 Be2 33.Rb1 a5 34.
h4 c4 35.a3 b5 36.h5 a4 37.Rh1 Rxb2 38.Re1 Rc2 39.Nh3 Rxc3+ 40.Kh4 Bd3 41.
Nf2 Kxf4 42.Ng4 Rc2 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "8"]
[White "Gouveia, Carlos Eduardo"]
[Black "Panno, Oscar"]
[Result "0-1"]
[BlackElo "2545"]
[ECO "A22"]
[EventDate "1975.10.18"]
[PlyCount "80"]

1.c4 e5 2.Nc3 Nf6 3.g3 Bb4 4.Bg2 O-O 5.Nf3 c6 6.O-O Re8 7.d4 e4 8.Ne1 h6 
9.Bd2 Na6 10.Nc2 Bxc3 11.Bxc3 d5 12.c5 Nc7 13.b4 Bd7 14.a4 Qc8 15.Bd2 Bh3 
16.Bf4 Bxg2 17.Kxg2 Ne6 18.Be5 Ng4 19.Bd6 h5 20.f3 exf3+ 21.exf3 Nh6 22.
Qd3 Ng5 23.Bf4 Qh3+ 24.Kg1 f6 25.Rae1 h4 26.Ne3 Re6 27.Ng2 hxg3 28.Bxg3 
Qf5 29.Qd1 Rae8 30.Rxe6 Rxe6 31.h4 Ngf7 32.Nf4 Re3 33.Qd2 Rb3 34.Qe1 g5 
35.Qe8+ Kh7 36.Ne6 Rxf3 37.Rxf3 Qxf3 38.Bf2 gxh4 39.Nf8+ Kg7 40.Be3 Qd1+ 
0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "8"]
[White "Silva Sanchez, Carlos"]
[Black "Segal, Alexandru Sorin"]
[Result "1/2-1/2"]
[WhiteElo "2355"]
[BlackElo "2385"]
[ECO "A30"]
[EventDate "1975.10.18"]
[PlyCount "86"]

1.c4 Nf6 2.Nc3 c5 3.Nf3 e6 4.g3 b6 5.Bg2 Bb7 6.O-O Be7 7.d4 cxd4 8.Nxd4 
Bxg2 9.Kxg2 O-O 10.Qa4 Qc8 11.Rd1 Na6 12.Bf4 Qb7+ 13.Kg1 Nc5 14.Qc2 a6 15.
Nf3 Nce4 16.Nxe4 Nxe4 17.Qd3 Rfd8 18.Nd2 Nc5 19.Qf3 Qxf3 20.Nxf3 Rac8 21.
Bd6 Bf6 22.Be5 Bxe5 23.Nxe5 d6 24.Nf3 Ne4 25.Rd4 f5 26.Rad1 Kf7 27.R4d3 
Ke7 28.b3 b5 29.cxb5 axb5 30.a3 e5 31.Kf1 Ra8 32.b4 Rdc8 33.Nh4 g6 34.Ng2 
Rc3 35.f3 Rxd3 36.Rxd3 Nf6 37.Ne3 Ke6 38.Rc3 Ra6 39.Kf2 h6 40.h4 Nd7 41.
Rc7 h5 42.Rb7 Rxa3 43.Rxb5 Ra8 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "8"]
[White "Stekel Grunberg, Moises"]
[Black "Garcia Toledo, Pedro"]
[Result "1/2-1/2"]
[WhiteElo "2350"]
[ECO "A09"]
[EventDate "1975.10.18"]
[PlyCount "109"]

1.Nf3 d5 2.c4 dxc4 3.e3 Bg4 4.Bxc4 e6 5.Qb3 Bxf3 6.gxf3 Qc8 7.d4 Nf6 8.e4 
Be7 9.Nc3 O-O 10.Rg1 Nc6 11.Bh6 Ne8 12.O-O-O Kh8 13.Be3 Na5 14.Qa4 Nxc4 
15.Qxc4 c6 16.Kb1 b5 17.Qd3 Nd6 18.Rc1 Qd7 19.Bf4 Nc4 20.Rg3 Rfd8 21.e5 c5
22.d5 b4 23.Qxc4 bxc3 24.Qxc3 Qxd5 25.Rgg1 Qd3+ 26.Qxd3 Rxd3 27.Be3 Rad8 
28.Rc4 h5 29.Rgc1 Kh7 30.a4 g5 31.R4c3 Kg6 32.Rxd3 Rxd3 33.f4 g4 34.Kc2 
Rd5 35.h3 gxh3 36.Rh1 Kf5 37.Rxh3 h4 38.f3 Rd8 39.Kc3 Rg8 40.Kc4 Rg2 41.b3
a6 42.Kd3 Rg3 43.Rxg3 hxg3 44.Ke2 Bf8 45.a5 Bh6 46.Bxc5 Bxf4 47.b4 Bxe5 
48.b5 axb5 49.a6 Bb8 50.Kf1 Kg5 51.Kg2 f5 52.Be7+ Kh5 53.Bd6 Ba7 54.Bxg3 
b4 55.Be5 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "8"]
[White "Trois, Francisco"]
[Black "Bravo Sedamanos, Hector"]
[Result "0-1"]
[WhiteElo "2310"]
[ECO "E39"]
[EventDate "1975.10.18"]
[PlyCount "82"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5 5.dxc5 Na6 6.Bd2 O-O 7.Nf3 Nxc5 8.Rd1 
Qe7 9.e3 b6 10.Be2 Bb7 11.O-O Rfc8 12.Qb1 d6 13.Nd4 Bxc3 14.Bxc3 Nfe4 15.
Be1 Qg5 16.Bf3 e5 17.Nb3 Nc3 18.Bxb7 Nxb1 19.Nxc5 dxc5 20.Rxb1 Qg4 21.f4 
Qe2 22.Bc3 Qxc4 23.fxe5 Qxa2 24.Rbd1 Rd8 25.Bxa8 Rxa8 26.Rd6 Rf8 27.h4 b5 
28.e6 fxe6 29.Rd7 Rxf1+ 30.Kxf1 e5 31.Bxe5 Qe6 32.Rxg7+ Kf8 33.Rg5 h6 34.
Bg7+ Kf7 35.Rg3 Qc4+ 36.Kg1 Qxh4 37.Be5 Qe4 38.Rf3+ Ke6 39.Bg7 b4 40.Rf6+ 
Ke7 41.Rxh6 Kf7 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "8"]
[White "Van Riemsdijk, Herman Claudius"]
[Black "Quinteros, Miguel Angel"]
[Result "0-1"]
[WhiteElo "2370"]
[BlackElo "2505"]
[ECO "B84"]
[EventDate "1975.10.18"]
[PlyCount "82"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e6 7.Be3 Nbd7 8.O-O 
b5 9.a4 b4 10.Na2 d5 11.Nxb4 Qc7 12.exd5 Bxb4 13.dxe6 Ne5 14.c3 Bc5 15.
exf7+ Nxf7 16.Bf3 Rb8 17.Bc6+ Kf8 18.Bf3 Rxb2 19.Qc1 Rb6 20.a5 Rd6 21.Bf4 
g5 22.Bxd6+ Bxd6 23.g3 h5 24.Qd2 h4 25.Rae1 Qxa5 26.Ne6+ Bxe6 27.Rxe6 Qf5 
28.Rxd6 Qxf3 29.Qd3 Qxd3 30.Rxd3 h3 31.f4 g4 32.Ra1 Kg7 33.Rxa6 Rb8 34.Ra2
Ne4 35.Kf1 Nfd6 36.Ra6 Rb1+ 37.Ke2 Rb2+ 38.Ke3 Rxh2 39.Raxd6 Nxd6 40.Rxd6 
Rg2 41.f5 h2 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "9"]
[White "Bravo Sedamanos, Hector"]
[Black "Camara, Helder"]
[Result "1/2-1/2"]
[BlackElo "2340"]
[ECO "B86"]
[EventDate "1975.10.18"]
[PlyCount "46"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bc4 e6 7.Bb3 Nbd7 8.O-O 
Nc5 9.Re1 Be7 10.Qf3 Bd7 11.g4 h6 12.Qg2 g5 13.Bc4 Qc7 14.Bf1 h5 15.b4 Na4
16.Nxa4 Bxa4 17.Bb2 Bd7 18.gxh5 O-O-O 19.a4 e5 20.Nf5 Bxf5 21.exf5 Nxh5 
22.Ra3 Kb8 23.b5 Nf4 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "9"]
[White "Bronstein, Luis Marcos"]
[Black "Silva Sanchez, Carlos"]
[Result "1/2-1/2"]
[WhiteElo "2355"]
[BlackElo "2355"]
[ECO "E61"]
[EventDate "1975.10.18"]
[PlyCount "80"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Bg5 O-O 5.e3 d6 6.Be2 c6 7.Qc2 Qa5 8.Nf3 Nbd7
9.O-O Re8 10.a3 e5 11.dxe5 Nxe5 12.Nxe5 dxe5 13.b4 Qc7 14.c5 Be6 15.Bxf6 
Bxf6 16.Ne4 Be7 17.Bc4 Bxc4 18.Qxc4 Kg7 19.Rad1 Rad8 20.Qc3 f6 21.Qb3 Rxd1
22.Rxd1 Rd8 23.Rxd8 Qxd8 24.g4 Qg8 25.Qxg8+ Kxg8 26.f4 exf4 27.exf4 f5 28.
gxf5 gxf5 29.Nd2 Kf7 30.Kf2 Ke6 31.Ke3 Kd5 32.Nb3 Bh4 33.Kd3 Bf2 34.h3 Bg3
35.Nd4 Bxf4 36.Nxf5 Bc1 37.a4 Bg5 38.Nd6 b6 39.cxb6 axb6 40.Nb7 c5 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "9"]
[White "Donoso Velasco, Pedro"]
[Black "Gamarra Caceres, Carlos"]
[Result "1-0"]
[WhiteElo "2380"]
[ECO "B92"]
[EventDate "1975.10.18"]
[PlyCount "79"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nb3 Be6 8.f4 Qc7
9.O-O Nbd7 10.a4 Be7 11.Kh1 O-O 12.Be3 Rfc8 13.a5 Bc4 14.Bxc4 Qxc4 15.Qf3 
d5 16.exd5 e4 17.Qd1 Qc7 18.Nd4 Bb4 19.Nf5 Re8 20.d6 Qd8 21.g4 Re6 22.Ra4 
Bc5 23.g5 Bxe3 24.Nxe3 Ne8 25.Rd4 Qxa5 26.f5 Re5 27.Nc4 Qc5 28.b4 Qc6 29.
Nxe5 Nxe5 30.Nd5 e3 31.Kg1 Kh8 32.Nxe3 Rd8 33.Ng4 Nxg4 34.Qxg4 Nxd6 35.
Rfd1 Qb6 36.Kh1 h6 37.g6 Kg8 38.Qf4 Qc6+ 39.Kg1 Qb6 40.c4 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "9"]
[White "Emma, Jaime"]
[Black "Van Riemsdijk, Herman Claudius"]
[Result "0-1"]
[WhiteElo "2405"]
[BlackElo "2370"]
[ECO "A57"]
[EventDate "1975.10.18"]
[PlyCount "94"]

1.Nf3 Nf6 2.c4 g6 3.d4 c5 4.d5 b5 5.a4 bxc4 6.Nc3 d6 7.e4 Ba6 8.Nd2 Qa5 9.
Qc2 Bg7 10.Bxc4 Bxc4 11.Nxc4 Qb4 12.Nd2 O-O 13.O-O Nbd7 14.a5 Ne8 15.Ra4 
Qb7 16.Nc4 Nc7 17.Bg5 Rfe8 18.f4 Rab8 19.Re1 Bd4+ 20.Kf1 Qb3 21.Re2 Rb4 
22.Qxb3 Rxb3 23.Bh4 f6 24.Be1 Reb8 25.Rc2 Na6 26.Nd1 g5 27.f5 Nb4 28.Bxb4 
R8xb4 29.Rxb4 Rxb4 30.Ke2 Ne5 31.Nd2 Rb5 32.Ne3 Bxe3 33.Kxe3 Rxa5 34.h4 
gxh4 35.Nf3 Rb5 36.Nxe5 fxe5 37.Kf3 Rb3+ 38.Kg4 Re3 39.Kxh4 Rxe4+ 40.g4 
Kf7 41.Rc3 Rb4 42.Ra3 Rxb2 43.Rxa7 h6 44.Kg3 Rd2 45.Ra8 Rd3+ 46.Kf2 c4 47.
Rh8 c3 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "9"]
[White "Panno, Oscar"]
[Black "Stekel Grunberg, Moises"]
[Result "1/2-1/2"]
[WhiteElo "2545"]
[BlackElo "2350"]
[ECO "A41"]
[EventDate "1975.10.18"]
[PlyCount "83"]

1.c4 g6 2.d4 Bg7 3.Nc3 d6 4.Nf3 Bg4 5.e3 Nc6 6.Be2 e5 7.d5 Nce7 8.O-O Nf6 
9.e4 O-O 10.Be3 c5 11.Rb1 a5 12.h3 Bc8 13.a3 b6 14.Nd2 Ne8 15.b4 axb4 16.
axb4 f5 17.f3 Kh8 18.Ra1 Bd7 19.Qb3 fxe4 20.Ndxe4 Nf5 21.Bg5 Qb8 22.bxc5 
bxc5 23.Qxb8 Rxb8 24.Rfb1 Rxb1+ 25.Rxb1 h6 26.Bd2 Rf7 27.Rb7 Kg8 28.Rb8 
Bf8 29.f4 exf4 30.Bxf4 Kh7 31.Bh2 Bg7 32.Bd3 Bd4+ 33.Kh1 Re7 34.Ne2 Nf6 
35.Nxf6+ Bxf6 36.g4 Nh4 37.Bxd6 Re3 38.Rb7 Rxh3+ 39.Kg1 Rxd3 40.Rxd7+ Kg8 
41.Bxc5 Nf3+ 42.Kg2 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "9"]
[White "Quinteros, Miguel Angel"]
[Black "Garcia Toledo, Pedro"]
[Result "1-0"]
[WhiteElo "2505"]
[ECO "B99"]
[EventDate "1975.10.18"]
[PlyCount "193"]

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.Qh3 Nb6 12.f5 e5 13.Nb3 Bd7 14.Be3 O-O-O 15.Bxb6
Qxb6 16.Bc4 Rhf8 17.Qf3 Bc6 18.Rhe1 Kb8 19.Nd2 Qc5 20.Bd5 Bxd5 21.Nxd5 
Nxd5 22.Nb3 Bg5+ 23.Kb1 Nc3+ 24.bxc3 Qc4 25.Kb2 Rc8 26.Rxd6 Be7 27.Rd7 Rc7
28.Red1 Rfc8 29.Rxc7 Rxc7 30.Rd5 b5 31.Qd3 b4 32.Qxc4 Rxc4 33.Na5 Rxc3 34.
Rd7 Bf6 35.Rxf7 Kc8 36.Nb7 Re3 37.Nc5 a5 38.Nd7 Rxe4 39.Nxf6 gxf6 40.Rxf6 
Re2 41.Rxh6 Rxg2 42.Re6 Rxh2 43.Rxe5 a4 44.Ra5 Rf2 45.Rxa4 Rxf5 46.Rxb4 
Kc7 47.a4 Kc6 48.c3 Rg5 49.Kb3 Rh5 50.Rg4 Kc5 51.Rb4 Kc6 52.Rb8 Rh1 53.Rg8
Kc5 54.Rg5+ Kb6 55.Kb4 Rb1+ 56.Kc4 Rh1 57.Rb5+ Kc6 58.Kb4 Rb1+ 59.Ka5 Rc1 
60.Rb8 Kc7 61.Rb3 Rh1 62.Rb4 Rh6 63.Rc4+ Kb7 64.Kb5 Rb6+ 65.Kc5 Rc6+ 66.
Kd5 Rh6 67.Re4 Ra6 68.Rb4+ Kc7 69.c4 Rd6+ 70.Kc5 Rc6+ 71.Kd4 Rd6+ 72.Kc3 
Rd1 73.Rb3 Kc6 74.a5 Kc5 75.Rb8 Kc6 76.Kb2 Kc7 77.Rb5 Rd2+ 78.Ka3 Rd1 79.
Rb3 Kc6 80.Kb4 Ra1 81.Ra3 Rb1+ 82.Kc3 Rc1+ 83.Kb3 Kb7 84.a6+ Ka7 85.Kb4 
Rb1+ 86.Kc5 Rh1 87.Kb5 Rb1+ 88.Kc6 Rh1 89.c5 Rh2 90.Rd3 Rh1 91.Rd8 Rh2 92.
Re8 Rf2 93.Kd6 Kxa6 94.c6 Kb6 95.Rb8+ Ka7 96.c7 Rd2+ 97.Ke5 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "9"]
[White "Sanguineti, Raul"]
[Black "Gouveia, Carlos Eduardo"]
[Result "1/2-1/2"]
[WhiteElo "2530"]
[ECO "A86"]
[EventDate "1975.10.18"]
[PlyCount "82"]

1.d4 f5 2.c4 Nf6 3.g3 g6 4.Nc3 Bg7 5.Bg2 d6 6.d5 O-O 7.Nh3 c5 8.Nf4 Na6 9.
h4 Nc7 10.h5 Qe8 11.a4 a6 12.a5 Bd7 13.Na4 Ng4 14.hxg6 hxg6 15.Nb6 Rd8 16.
Ra3 Ne5 17.Qc2 Kf7 18.Nxd7 Qxd7 19.g4 Rh8 20.Rg1 Nxg4 21.Bh3 e5 22.dxe6+ 
Nxe6 23.Nxg6 Rh5 24.Nf4 Nxf4 25.Bxf4 Be5 26.Rf3 Rg8 27.Bxe5 dxe5 28.Qd3 
Qxd3 29.Rxd3 e4 30.Bxg4 Rxg4 31.Rd7+ Ke6 32.Rxg4 Kxd7 33.Rg7+ Kd6 34.Rxb7 
Ke5 35.e3 Rh1+ 36.Ke2 Ra1 37.f4+ exf3+ 38.Kxf3 Rxa5 39.Rd7 Ra2 40.Rd5+ Ke6
41.Rxc5 Rxb2 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "9"]
[White "Segal, Alexandru Sorin"]
[Black "Trois, Francisco"]
[Result "0-1"]
[WhiteElo "2385"]
[BlackElo "2310"]
[ECO "A56"]
[EventDate "1975.10.18"]
[PlyCount "64"]

1.d4 Nf6 2.c4 c5 3.d5 e5 4.Nc3 d6 5.e4 g6 6.Bd3 Bg7 7.h3 h5 8.Nf3 a6 9.Be3
Nbd7 10.Qd2 Rb8 11.a4 Qe7 12.Rb1 O-O 13.Nh2 Nh7 14.Qe2 f5 15.f3 Bf6 16.g4 
Bh4+ 17.Kd2 f4 18.Bf2 Bg3 19.gxh5 gxh5 20.Rbg1 h4 21.Ng4 Kg7 22.Bxg3 hxg3 
23.h4 Ndf6 24.Bc2 Nxg4 25.fxg4 f3 26.Qf1 g2 27.Rxg2 fxg2 28.Qxg2 Qf6 29.
Ne2 Qf2 30.Rg1 Qxg2 31.Rxg2 Nf6 32.Bd1 Nxg4 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "9"]
[White "Szmetan, Jorge"]
[Black "Benitez Ayestaran, Otto"]
[Result "1-0"]
[WhiteElo "2435"]
[ECO "B11"]
[EventDate "1975.10.18"]
[PlyCount "37"]

1.e4 c6 2.Nc3 d5 3.Nf3 Bg4 4.h3 Bxf3 5.Qxf3 Nf6 6.d3 e6 7.a3 Be7 8.g4 Nfd7
9.Qg3 Bh4 10.Qh2 Qb6 11.Be2 a5 12.g5 Bxg5 13.Bxg5 Qxb2 14.Kd2 d4 15.Na2 
Qxa3 16.Bf4 c5 17.Rhb1 Nc6 18.Kd1 Nd8 19.Nc1 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "10"]
[White "Benitez Ayestaran, Otto"]
[Black "Gamarra Caceres, Carlos"]
[Result "1-0"]
[ECO "B24"]
[EventDate "1975.10.18"]
[PlyCount "89"]

1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 e6 6.Nge2 Rb8 7.O-O Nge7 8.Bg5 b5
9.Qd2 b4 10.Nd1 Nd4 11.Re1 d6 12.c3 Nxe2+ 13.Rxe2 bxc3 14.bxc3 h6 15.Be3 
Qa5 16.Qc1 Ba6 17.Rd2 O-O 18.d4 Nc6 19.Bf1 Bxf1 20.Kxf1 cxd4 21.cxd4 Rfc8 
22.Rb1 Nb4 23.Qb2 Na6 24.Qa1 Nc5 25.f3 Qa6+ 26.Kg2 Na4 27.Rxb8 Rxb8 28.Qc1
Nb6 29.Qc6 Rc8 30.Qxd6 Qa4 31.Qe7 Nc4 32.Qb7 Re8 33.Nb2 Nxe3+ 34.Kf2 Qa5 
35.Kxe3 Qxa2 36.Nd1 Qa5 37.Qc6 Bxd4+ 38.Rxd4 Qe1+ 39.Kf4 e5+ 40.Kg4 Rf8 
41.Rd7 Qe2 42.h4 Kg7 43.Qe6 h5+ 44.Kg5 Kg8 45.Qf6 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "10"]
[White "Garcia Toledo, Pedro"]
[Black "Emma, Jaime"]
[Result "0-1"]
[BlackElo "2405"]
[ECO "B23"]
[EventDate "1975.10.18"]
[PlyCount "116"]

1.e4 c5 2.Nc3 Nc6 3.f4 e6 4.Nf3 d5 5.Bb5 Ne7 6.Qe2 d4 7.Nd1 a6 8.Bxc6+ 
Nxc6 9.d3 b5 10.O-O Be7 11.Nf2 f6 12.f5 e5 13.g4 g5 14.h4 h6 15.Kg2 Bb7 
16.Rh1 Kd7 17.Bd2 Qg8 18.Rh3 Qf7 19.Rah1 Rhg8 20.a3 Kc7 21.R1h2 Rg7 22.
hxg5 hxg5 23.Qd1 Rag8 24.Nh1 Qa2 25.Bc1 c4 26.Rh6 Rf7 27.Rh7 Rgg7 28.Rxg7 
Rxg7 29.Rh6 Rf7 30.Ng3 b4 31.axb4 Nxb4 32.dxc4 Qb1 33.Nd2 Qxc2 34.Qxc2 
Nxc2 35.Nf3 Nb4 36.Ne1 a5 37.Kf3 a4 38.Bd2 Ba6 39.Bxb4 Bxb4 40.Nd3 Bd6 41.
Rh1 Kc6 42.Rc1 Rb7 43.Ke2 Rb3 44.Nf1 Bb4 45.Rc2 Ba5 46.Ng3 Kd6 47.Nh5 Ke7 
48.Nc5 Re3+ 49.Kf2 Bc8 50.Re2 a3 51.bxa3 Rc3 52.Rb2 Rxc4 53.Rb5 Rc2+ 54.
Kf3 Be1 55.Nd3 Ba6 56.Rb1 Bh4 57.Nxf6 Bxd3 58.Nd5+ Kd7 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "10"]
[White "Gouveia, Carlos Eduardo"]
[Black "Donoso Velasco, Pedro"]
[Result "1-0"]
[BlackElo "2380"]
[ECO "A28"]
[EventDate "1975.10.18"]
[PlyCount "73"]

1.c4 e5 2.Nc3 Nf6 3.a3 d5 4.cxd5 Nxd5 5.Nf3 Nc6 6.e4 Nxc3 7.bxc3 Bd6 8.Be2
O-O 9.O-O Qe7 10.d3 Bd7 11.Bg5 f6 12.Be3 Kh8 13.a4 Na5 14.Nd2 c5 15.c4 Nc6
16.Nb1 f5 17.exf5 Bxf5 18.Nc3 Nd4 19.Bg4 Bg6 20.Nd5 Qf7 21.Bxd4 exd4 22.
Ra2 Rae8 23.f4 Bf5 24.Bxf5 Qxf5 25.Re2 h5 26.g3 h4 27.Rfe1 Rxe2 28.Qxe2 
hxg3 29.hxg3 Rd8 30.Kg2 Kg8 31.g4 Qd7 32.f5 Rf8 33.Qe4 Rf7 34.f6 Qxa4 35.
g5 gxf6 36.Nxf6+ Kf8 37.Qe8+ 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "10"]
[White "Quinteros, Miguel Angel"]
[Black "Panno, Oscar"]
[Result "1/2-1/2"]
[WhiteElo "2505"]
[BlackElo "2545"]
[ECO "B82"]
[EventDate "1975.10.18"]
[PlyCount "126"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.f4 a6 7.Qf3 Qb6 8.Nb3 Qc7
9.g4 d5 10.exd5 Nxd5 11.Nxd5 exd5 12.Bd2 h5 13.O-O-O hxg4 14.Re1+ Be7 15.
Qxd5 Be6 16.Qe4 Rh5 17.Qd3 Kf8 18.Nd4 Bd7 19.Rxe7 Kxe7 20.Qa3+ Ke8 21.Bb5 
Rc5 22.Re1+ Kf8 23.Nb3 axb5 24.Qxc5+ Qxc5 25.Nxc5 Bc6 26.a3 Na6 27.Nd3 f6 
28.Nf2 Bf3 29.Rg1 Kf7 30.Nxg4 Rh8 31.Ne3 Rxh2 32.Nf5 Rh7 33.Nd6+ Ke7 34.
Nxb5 Rh1 35.Rxh1 Bxh1 36.c4 Be4 37.b3 Ke6 38.Kb2 Nc5 39.Kc3 Bh7 40.Be3 
Ne4+ 41.Kd4 g5 42.fxg5 fxg5 43.a4 g4 44.a5 Kd7 45.b4 g3 46.Nc3 Nxc3 47.
Kxc3 Kc8 48.Bf4 g2 49.Bh2 Bg6 50.Kd4 Bf7 51.Kc5 Be6 52.Kb5 g1=Q 53.Bxg1 
Kb8 54.c5 Ka7 55.Ka4 Ka8 56.b5 Bd7 57.Kb4 Be8 58.Kc4 Bd7 59.b6 Bc6 60.Kd4 
Bd5 61.Ke5 Bc6 62.Kd6 Bb5 63.Ke7 Ba6 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "10"]
[White "Segal, Alexandru Sorin"]
[Black "Bronstein, Luis Marcos"]
[Result "1/2-1/2"]
[WhiteElo "2385"]
[BlackElo "2355"]
[ECO "A01"]
[EventDate "1975.10.18"]
[PlyCount "129"]

1.b3 Nf6 2.Bb2 g6 3.e4 d6 4.g3 Bg7 5.Bg2 O-O 6.Ne2 c5 7.O-O Nc6 8.Na3 e5 
9.c3 d5 10.exd5 Nxd5 11.Nc2 Bg4 12.Re1 Qd7 13.Ba3 e4 14.Bxc5 Rfe8 15.Bd4 
Bxd4 16.cxd4 Ndb4 17.Ne3 Bxe2 18.Qxe2 Nxd4 19.Qd1 Rad8 20.a3 Nd3 21.Ng4 
Kg7 22.Rxe4 Qf5 23.f3 Qc5 24.Ne3 f5 25.Rxe8 Rxe8 26.b4 Qb6 27.f4 Nb3 28.
Ra2 Nxd2 29.Rxd2 Rxe3 30.Kf1 Re1+ 31.Qxe1 Nxe1 32.Kxe1 Qg1+ 33.Bf1 b5 34.
Rf2 h5 35.Ke2 h4 36.gxh4 Qg4+ 37.Ke3 a6 38.h5 Qxh5 39.Rd2 Qh4 40.Re2 Kf6 
41.Rf2 g5 42.fxg5+ Qxg5+ 43.Ke2 Qc1 44.Rf3 Qc2+ 45.Ke1 Qxh2 46.Be2 Qg1+ 
47.Kd2 Ke5 48.Re3+ Kf4 49.Rf3+ Ke4 50.Rd3 Qg5+ 51.Ke1 Qg7 52.Kd2 Qa7 53.
Ke1 Kf4 54.Rf3+ Ke5 55.Rd3 Qg1+ 56.Kd2 Qa1 57.Re3+ Kf6 58.Rd3 f4 59.Rf3 
Ke5 60.Rd3 Qg1 61.Rf3 Ke4 62.Rd3 Qh1 63.Rc3 Qg1 64.Rd3 Qf2 65.Kd1 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "10"]
[White "Silva Sanchez, Carlos"]
[Black "Szmetan, Jorge"]
[Result "1-0"]
[WhiteElo "2355"]
[BlackElo "2435"]
[ECO "C63"]
[EventDate "1975.10.18"]
[PlyCount "81"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.d3 Nf6 5.O-O fxe4 6.dxe4 d6 7.Qd3 Bg4 8.h3 
Bh5 9.Nc3 Qd7 10.a3 Be7 11.Nd5 O-O 12.Nxe5 Nxe5 13.Qb3 Qe6 14.Nxe7+ Kf7 
15.Qxe6+ Kxe6 16.Nf5 Bg6 17.Nd4+ Ke7 18.f4 Ned7 19.e5 Nd5 20.Bxd7 Kxd7 21.
e6+ Ke7 22.f5 Be8 23.Bg5+ Nf6 24.g4 a5 25.Rad1 a4 26.Bh4 h6 27.Ne2 Ra5 28.
Nf4 c6 29.Nd3 Rg8 30.c4 Ra6 31.c5 dxc5 32.Nxc5 Ra5 33.Ne4 Rb5 34.Rf2 Rh8 
35.Rfd2 h5 36.Nc3 hxg4 37.Bxf6+ gxf6 38.Nxb5 cxb5 39.hxg4 Rh4 40.Rd4 Bc6 
41.R1d2 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "10"]
[White "Stekel Grunberg, Moises"]
[Black "Sanguineti, Raul"]
[Result "0-1"]
[WhiteElo "2350"]
[BlackElo "2530"]
[ECO "A09"]
[EventDate "1975.10.18"]
[PlyCount "98"]

1.Nf3 d5 2.c4 d4 3.b4 c5 4.Bb2 Nf6 5.g3 Nbd7 6.d3 e5 7.b5 e4 8.dxe4 Nxe4 
9.Bg2 Nd6 10.Nbd2 Nb6 11.Rc1 Be6 12.Ne5 Qc7 13.O-O f6 14.Nd3 Ndxc4 15.Ba1 
Bd6 16.Ne4 Rd8 17.e3 dxe3 18.Ndxc5 Bxc5 19.Qh5+ Bf7 20.Qxc5 Qe7 21.fxe3 
Bd5 22.Bd4 Rc8 23.Qxe7+ Kxe7 24.Nc5 Bxg2 25.Kxg2 Nd6 26.a4 Rc7 27.Nb3 Rhc8
28.Bxb6 axb6 29.Rxc7+ Rxc7 30.Nd4 Rc4 31.Ra1 f5 32.h4 Kf6 33.Kf3 Rb4 34.
Ra2 Nc4 35.Ke2 Rb2+ 36.Rxb2 Nxb2 37.Kf3 Ke5 38.g4 fxg4+ 39.Kxg4 Nxa4 40.
Nf5 g6 41.Nd4 Nc3 42.Kg5 Nd5 43.Kh6 Nxe3 44.Nf3+ Kf4 45.Kxh7 Kxf3 46.Kxg6 
Kf4 47.h5 Ng4 48.Kf7 Kg5 49.Ke6 Ne3 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "10"]
[White "Trois, Francisco"]
[Black "Camara, Helder"]
[Result "1/2-1/2"]
[WhiteElo "2310"]
[BlackElo "2340"]
[ECO "B40"]
[EventDate "1975.10.18"]
[PlyCount "38"]

1.e4 e6 2.d4 c5 3.Nf3 cxd4 4.Nxd4 Nc6 5.Nxc6 bxc6 6.Bd3 d5 7.O-O Nf6 8.Nd2
Nd7 9.exd5 cxd5 10.Re1 Be7 11.c4 Bb7 12.cxd5 Bxd5 13.Qh5 g6 14.Qh3 O-O 15.
Ne4 Nc5 16.Bh6 Re8 17.Rad1 Nxd3 18.Qxd3 Bxe4 19.Qxe4 Qa5 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "10"]
[White "Van Riemsdijk, Herman Claudius"]
[Black "Bravo Sedamanos, Hector"]
[Result "1-0"]
[WhiteElo "2370"]
[ECO "C80"]
[EventDate "1975.10.18"]
[PlyCount "71"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.Re1 Nc5 7.Bxc6 dxc6 8.d4
e4 9.Nbd2 Ne6 10.Nxe4 Be7 11.c4 O-O 12.Nc3 Re8 13.Be3 Bd6 14.Qd2 Nf8 15.c5
Be7 16.d5 cxd5 17.Nxd5 Be6 18.Nxe7+ Qxe7 19.Qc3 f6 20.Bf4 Qf7 21.c6 bxc6 
22.Qxc6 Bd5 23.Qxc7 Bxa2 24.Rxe8 Rxe8 25.Qxf7+ Bxf7 26.Rxa6 Bd5 27.b4 g5 
28.Be3 Ne6 29.b5 Bc4 30.Ra5 f5 31.b6 f4 32.b7 Nc7 33.Rxg5+ Kf7 34.Bxf4 Na6
35.Ra5 Rd8 36.h3 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "11"]
[White "Bravo Sedamanos, Hector"]
[Black "Silva Sanchez, Carlos"]
[Result "1/2-1/2"]
[BlackElo "2355"]
[ECO "C84"]
[EventDate "1975.10.18"]
[PlyCount "55"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d4 exd4 6.O-O Be7 7.Re1 O-O 8.e5 
Ne8 9.Nxd4 Nxd4 10.Qxd4 d6 11.c4 dxe5 12.Qxe5 Be6 13.Bc2 Bf6 14.Qe4 g6 15.
Qxb7 Rb8 16.Qf3 Bxb2 17.Bxb2 Rxb2 18.Bb3 Qf6 19.Qxf6 Nxf6 20.Nc3 Rd8 21.
Na4 Rbd2 22.Nc5 R8d6 23.Nxe6 Rxe6 24.Rxe6 fxe6 25.Re1 Nd7 26.g3 Kf7 27.c5 
Nxc5 28.Rc1 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "11"]
[White "Bronstein, Luis Marcos"]
[Black "Quinteros, Miguel Angel"]
[Result "0-1"]
[WhiteElo "2355"]
[BlackElo "2505"]
[ECO "B96"]
[EventDate "1975.10.18"]
[PlyCount "82"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 b5 8.e5 dxe5 
9.fxe5 Qc7 10.Qe2 Nfd7 11.O-O-O Bb7 12.Qh5 g6 13.Qh4 Qxe5 14.Re1 Qc5 15.
Bd3 Nc6 16.Nb3 Qd6 17.Ne4 Qc7 18.Bf4 Qd8 19.Bg5 Qc7 20.Bf4 Qd8 21.Qf2 Be7 
22.Nd6+ Bxd6 23.Bxd6 Qg5+ 24.Kb1 Qd5 25.Qg3 e5 26.Bc7 O-O 27.Rd1 Nd4 28.
Nxd4 exd4 29.Rd2 Rac8 30.Rhd1 Nc5 31.Bf4 Rfe8 32.Bf1 Ne4 33.Qh4 g5 34.Qg4 
h5 35.Qxh5 gxf4 36.Qg4+ Qg5 37.Qxg5+ Nxg5 38.Rxd4 Ne6 39.Rd7 Rcd8 40.Kc1 
Rxd7 41.Rxd7 Nc5 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "11"]
[White "Camara, Helder"]
[Black "Benitez Ayestaran, Otto"]
[Result "1-0"]
[WhiteElo "2340"]
[ECO "D25"]
[EventDate "1975.10.18"]
[PlyCount "47"]

1.Nf3 d5 2.d4 Nf6 3.c4 dxc4 4.e3 Bg4 5.Bxc4 e6 6.Nc3 Nbd7 7.h3 Bh5 8.Be2 
c5 9.O-O a6 10.b3 Be7 11.Bb2 O-O 12.Qd2 Rc8 13.Rfd1 cxd4 14.Nxd4 Bxe2 15.
Qxe2 Qa5 16.a3 Nb6 17.Qf3 Nbd5 18.b4 Qc7 19.Nxd5 Nxd5 20.Rac1 Qe5 21.Rxc8 
Rxc8 22.e4 Nf6 23.Nf5 Qc7 24.Be5 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "11"]
[White "Donoso Velasco, Pedro"]
[Black "Van Riemsdijk, Herman Claudius"]
[Result "1-0"]
[WhiteElo "2380"]
[BlackElo "2370"]
[ECO "C91"]
[EventDate "1975.10.18"]
[PlyCount "79"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.d4 d6 
9.c3 Bg4 10.Be3 exd4 11.cxd4 d5 12.e5 Ne4 13.Nc3 Nxc3 14.bxc3 Na5 15.Bc2 
Nc4 16.h3 Nxe3 17.Rxe3 Be6 18.Qe2 Qd7 19.Rf1 Rae8 20.Ne1 c5 21.f4 cxd4 22.
cxd4 Bf5 23.Bxf5 Qxf5 24.g4 Qc8 25.Nf3 Qc4 26.Qf2 Bb4 27.f5 Bc3 28.Rd1 b4 
29.f6 Re6 30.Qh4 h6 31.g5 Kh8 32.g6 fxg6 33.Ng5 Ree8 34.f7 Re7 35.e6 Bd2 
36.Rxd2 Qc1+ 37.Qe1 Qxe1+ 38.Rxe1 hxg5 39.Rc2 g4 40.hxg4 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "11"]
[White "Emma, Jaime"]
[Black "Segal, Alexandru Sorin"]
[Result "0-1"]
[WhiteElo "2405"]
[BlackElo "2385"]
[ECO "C00"]
[EventDate "1975.10.18"]
[PlyCount "82"]

1.e4 e6 2.d3 d5 3.Nd2 Nf6 4.g3 Nc6 5.Bg2 dxe4 6.dxe4 e5 7.Ngf3 Bc5 8.O-O 
O-O 9.c3 a5 10.Qe2 b6 11.a4 Ba6 12.Nc4 Ne8 13.b3 Nd6 14.Rd1 Qe7 15.Rd5 f6 
16.Nfd2 Qf7 17.Bf1 Ne7 18.Rxc5 bxc5 19.Ba3 Rfb8 20.Qe3 Nxc4 21.bxc4 Nc8 
22.Bxc5 Nb6 23.Bxb6 cxb6 24.c5 Bxf1 25.Nxf1 bxc5 26.Qxc5 Rc8 27.Qd6 Qc4 
28.Ne3 Qxc3 29.Qe6+ Kh8 30.Rd1 Qb4 31.Qg4 Qxa4 32.Rd7 Rg8 33.Rc7 Rad8 34.
Kg2 Qe8 35.Nf5 Rd7 36.Rxd7 Qxd7 37.Nh6 Rd8 38.Nf5 g6 39.Qh4 gxf5 40.Qxf6+ 
Kg8 41.Qg5+ Kf7 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "11"]
[White "Gamarra Caceres, Carlos"]
[Black "Gouveia, Carlos Eduardo"]
[Result "0-1"]
[ECO "C67"]
[EventDate "1975.10.18"]
[PlyCount "86"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d4 Nxe4 5.O-O Nd6 6.Bxc6 dxc6 7.dxe5 Nf5 8.
Nc3 Qxd1 9.Rxd1 h6 10.b3 Be7 11.Bb2 Be6 12.Ne4 Bd5 13.Ned2 O-O-O 14.Ne1 c5
15.Nd3 Rd7 16.Nf4 Rhd8 17.Nf1 Be4 18.Rxd7 Rxd7 19.c3 g5 20.Nh5 Rd3 21.Nhg3
Nxg3 22.hxg3 c4 23.bxc4 Bf5 24.Ne3 Be6 25.Rd1 Rxd1+ 26.Nxd1 Bxc4 27.Ne3 
Bxa2 28.Nf5 Bf8 29.f4 Bb1 30.Nd4 Bd3 31.Kf2 c5 32.Nb3 b6 33.Ke3 Bc2 34.Nd2
b5 35.Ne4 gxf4+ 36.gxf4 Kd7 37.g4 a5 38.f5 Bxe4 39.Kxe4 Kc6 40.Bc1 c4 41.
Bb2 b4 42.Kd4 Kb5 43.Kd5 b3 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "11"]
[White "Panno, Oscar"]
[Black "Trois, Francisco"]
[Result "1/2-1/2"]
[WhiteElo "2545"]
[BlackElo "2310"]
[ECO "E14"]
[EventDate "1975.10.18"]
[PlyCount "93"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.e3 Bb7 5.Bd3 Bb4+ 6.Bd2 Bxd2+ 7.Nbxd2 d6 8.O-O
Nbd7 9.b4 c5 10.Qb3 Qc7 11.Rfd1 O-O 12.Rac1 Rfd8 13.a3 Rac8 14.Bb1 Qb8 15.
Ng5 h6 16.Nge4 Nxe4 17.Bxe4 Nf6 18.Bf3 Bxf3 19.Nxf3 cxd4 20.Nxd4 d5 21.b5 
dxc4 22.Nc6 Rxd1+ 23.Rxd1 Qc7 24.Qb4 Nd5 25.Qxc4 a6 26.a4 axb5 27.axb5 Ra8
28.g3 Ne7 29.e4 Kh7 30.h4 Rc8 31.Rc1 Qd7 32.Qa4 Rc7 33.e5 Qd5 34.Rd1 Qf3 
35.Qc2+ g6 36.Rc1 Nf5 37.h5 Qxh5 38.Qe4 Qg5 39.Rc4 Ne7 40.Kg2 Nf5 41.Rc3 
Qd2 42.Rd3 Qc2 43.g4 Ng7 44.Qd4 Qe2 45.Rb3 h5 46.gxh5 Nxh5 47.Rb2 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "11"]
[White "Sanguineti, Raul"]
[Black "Garcia Toledo, Pedro"]
[Result "1-0"]
[WhiteElo "2530"]
[ECO "E01"]
[EventDate "1975.10.18"]
[PlyCount "77"]

1.d4 d5 2.c4 c6 3.Nf3 e6 4.Nbd2 Nf6 5.g3 Bd6 6.Qc2 Nbd7 7.Bg2 O-O 8.O-O 
Re8 9.b3 e5 10.cxd5 cxd5 11.dxe5 Nxe5 12.Bb2 Nc6 13.e3 Bg4 14.Nd4 Rc8 15.
Nxc6 bxc6 16.Rac1 h5 17.Rfe1 h4 18.e4 Bb4 19.a3 Bxd2 20.Qxd2 hxg3 21.hxg3 
Nxe4 22.Qd4 Qg5 23.f3 Bxf3 24.Bxf3 Qxg3+ 25.Bg2 Re6 26.Qe3 Qh4 27.Qd4 Rg6 
28.Re2 Re8 29.Rf1 Ree6 30.Bc1 Rg4 31.Qxa7 Reg6 32.Qb8+ Kh7 33.Qh2 Qxh2+ 
34.Kxh2 Ng3 35.Rff2 Rh4+ 36.Bh3 Nxe2 37.Rxe2 Re4 38.Rxe4 dxe4 39.Bf4 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "11"]
[White "Szmetan, Jorge"]
[Black "Stekel Grunberg, Moises"]
[Result "1-0"]
[WhiteElo "2435"]
[BlackElo "2350"]
[ECO "E63"]
[EventDate "1975.10.18"]
[PlyCount "63"]

1.d4 g6 2.Nf3 d6 3.g3 Bg7 4.Bg2 Nf6 5.O-O O-O 6.c4 Nc6 7.Nc3 a6 8.h3 Rb8 
9.Be3 b5 10.Nd2 Na5 11.cxb5 axb5 12.b4 Nc4 13.Nxc4 bxc4 14.b5 Bb7 15.Qa4 
Bxg2 16.Kxg2 d5 17.Rfd1 Ne8 18.Qb4 Nd6 19.a4 Nf5 20.Qc5 Nxe3+ 21.fxe3 e6 
22.e4 Re8 23.exd5 exd5 24.Ra2 Rb6 25.a5 Rbe6 26.a6 Re3 27.a7 Qg5 28.Ne4 
R3xe4 29.a8=Q Bf8 30.Qcxd5 Rxe2+ 31.Rxe2 Rxe2+ 32.Kf1 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "12"]
[White "Garcia Toledo, Pedro"]
[Black "Szmetan, Jorge"]
[Result "0-1"]
[BlackElo "2435"]
[ECO "C27"]
[EventDate "1975.10.18"]
[PlyCount "90"]

1.e4 e5 2.Bc4 Nf6 3.d3 Bc5 4.Nc3 d6 5.f4 Ng4 6.Qf3 Nf2 7.fxe5 O-O 8.Nge2 
Nxh1 9.d4 Bb6 10.exd6 Qxd6 11.Be3 Be6 12.Bd3 Nc6 13.e5 Qe7 14.O-O-O f6 15.
Qe4 f5 16.Qf3 Rad8 17.Bb5 Nb4 18.Rxh1 c6 19.a3 Nd5 20.Ba4 Nxc3 21.Nxc3 
Bxd4 22.Bd2 b5 23.Bb3 Bxb3 24.cxb3 Qxe5 25.Qxc6 Bxc3 26.bxc3 Qe2 27.Bf4 
Rf7 28.Kb1 Qe4+ 29.Qxe4 fxe4 30.g3 h6 31.Re1 g5 32.Be3 a6 33.Kc2 Kh7 34.a4
Kg6 35.axb5 axb5 36.g4 Rf3 37.Re2 Re8 38.c4 bxc4 39.bxc4 Kf7 40.Kc3 Rd8 
41.Kb4 Rd3 42.Bb6 e3 43.Re1 Ke6 44.c5 Kd5 45.c6 Rf4+ 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "12"]
[White "Gouveia, Carlos Eduardo"]
[Black "Camara, Helder"]
[Result "1/2-1/2"]
[BlackElo "2340"]
[ECO "A15"]
[EventDate "1975.10.18"]
[PlyCount "83"]

1.c4 c6 2.Nf3 Nf6 3.e3 g6 4.b3 Bg7 5.Bb2 O-O 6.Be2 d6 7.O-O a5 8.d3 Na6 9.
a3 Bd7 10.Nbd2 Qc7 11.Rc1 c5 12.Bc3 b6 13.Ng5 Rad8 14.f4 Qc8 15.Qe1 h6 16.
Nge4 Nxe4 17.Nxe4 f5 18.Bxg7 Kxg7 19.Nc3 Nc7 20.Qh4 Rde8 21.Rf3 e5 22.Rh3 
Rh8 23.Rg3 Qd8 24.Qh5 Qf6 25.fxe5 Rxe5 26.Qf3 Rb8 27.Rf1 Re7 28.Nd5 Nxd5 
29.Qxd5 Qe5 30.Bh5 g5 31.Qf3 Kh7 32.Qf2 Rf8 33.d4 Qf6 34.h4 Rg8 35.dxc5 
dxc5 36.Bf3 Qe5 37.Bd5 Rgg7 38.hxg5 Rxg5 39.Rh3 Qg7 40.Rf3 Qe5 41.Rh3 Qg7 
42.Rf3 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "12"]
[White "Panno, Oscar"]
[Black "Bronstein, Luis Marcos"]
[Result "1/2-1/2"]
[WhiteElo "2545"]
[BlackElo "2355"]
[ECO "A49"]
[EventDate "1975.10.18"]
[PlyCount "27"]

1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.O-O O-O 5.d4 d6 6.Nc3 d5 7.Ne5 c6 8.e4 dxe4 
9.Nxe4 Nxe4 10.Bxe4 Bh3 11.Re1 Nd7 12.Nxd7 Qxd7 13.c3 Rad8 14.Bf4 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "12"]
[White "Quinteros, Miguel Angel"]
[Black "Emma, Jaime"]
[Result "1-0"]
[WhiteElo "2505"]
[BlackElo "2405"]
[ECO "B12"]
[EventDate "1975.10.18"]
[PlyCount "59"]

1.e4 c6 2.d4 d5 3.Nd2 g6 4.c3 Bg7 5.e5 h5 6.Bd3 Nh6 7.Ndf3 Na6 8.Ne2 Nc7 
9.Ng3 Bg4 10.h3 Bxf3 11.Qxf3 e6 12.Ne2 h4 13.g4 hxg3 14.fxg3 Nf5 15.h4 Bh6
16.h5 Bxc1 17.Rxc1 Qg5 18.g4 Ne3 19.hxg6 Rxh1+ 20.Qxh1 Nxg4 21.Qh7 O-O-O 
22.Qxf7 Qe3 23.g7 Nh6 24.Qf4 Qh3 25.Kd2 Nf5 26.Rg1 Rg8 27.Bxf5 exf5 28.Rg6
Kd7 29.Rd6+ Ke8 30.Qg5 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "12"]
[White "Segal, Alexandru Sorin"]
[Black "Sanguineti, Raul"]
[Result "0-1"]
[WhiteElo "2385"]
[BlackElo "2530"]
[ECO "A48"]
[EventDate "1975.10.18"]
[PlyCount "86"]

1.Nf3 c5 2.e3 Nf6 3.d4 g6 4.b3 Bg7 5.Bb2 b6 6.Be2 O-O 7.O-O Bb7 8.Nbd2 d6 
9.c4 e6 10.Qc2 Qe7 11.Rad1 Nbd7 12.Rfe1 Rac8 13.dxc5 bxc5 14.Bd3 Rfd8 15.
Bc3 Nb8 16.a3 Nc6 17.e4 e5 18.b4 Nh5 19.b5 Nd4 20.Bxd4 cxd4 21.Qb3 Nf4 22.
a4 h5 23.Bf1 Bh6 24.Qa3 Rc7 25.a5 Ra8 26.Rb1 Bc8 27.b6 axb6 28.Rxb6 Bf8 
29.Reb1 Rca7 30.Nb3 Qc7 31.Qc1 Ne6 32.c5 dxc5 33.Bc4 Bd7 34.Ng5 Bh6 35.
Bxe6 fxe6 36.Nxe6 Rc8 37.Nbxc5 Bxc1 38.Nxc7 Raxc7 39.Nxd7 Rxd7 40.Kf1 d3 
41.Rb7 Rxb7 42.Rxb7 Bh6 43.Rb1 d2 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "12"]
[White "Silva Sanchez, Carlos"]
[Black "Donoso Velasco, Pedro"]
[Result "1/2-1/2"]
[WhiteElo "2355"]
[BlackElo "2380"]
[ECO "A14"]
[EventDate "1975.10.18"]
[PlyCount "68"]

1.c4 e6 2.Nf3 d5 3.b3 Nf6 4.g3 Be7 5.Bg2 O-O 6.O-O b6 7.Bb2 Bb7 8.Ne5 Qc8 
9.Qc2 dxc4 10.Bxb7 Qxb7 11.Qxc4 c5 12.d4 Rc8 13.Nc3 cxd4 14.Qxd4 Nc6 15.
Nxc6 Rxc6 16.Rad1 Rd6 17.Qe5 Rad8 18.Rxd6 Rxd6 19.Rd1 Rxd1+ 20.Nxd1 Qd5 
21.Qb8+ Qd8 22.Qxd8+ Bxd8 23.Bd4 Nd5 24.e4 Nb4 25.a4 Nc6 26.Bc3 a6 27.Kf1 
Bf6 28.Bxf6 gxf6 29.Nb2 Kf8 30.Ke1 Nd4 31.b4 Nc2+ 32.Kd2 Nxb4 33.Nc4 b5 
34.axb5 axb5 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "12"]
[White "Stekel Grunberg, Moises"]
[Black "Bravo Sedamanos, Hector"]
[Result "0-1"]
[WhiteElo "2350"]
[ECO "D34"]
[EventDate "1975.10.18"]
[PlyCount "61"]

1.c4 e6 2.Nc3 d5 3.d4 c5 4.Nf3 Nc6 5.cxd5 exd5 6.g3 Nf6 7.Bg2 Be7 8.O-O 
O-O 9.Bg5 cxd4 10.Nxd4 h6 11.Be3 Ne5 12.b3 Qa5 13.Rc1 Bd7 14.Qd2 Bb4 15.a3
Bxa3 16.Ra1 Rac8 17.Nxd5 Qxd2 18.Nxf6+ gxf6 19.Bxd2 Bb2 20.Rad1 Bxd4 21.
Bxh6 Bb6 22.Bxf8 Kxf8 23.Bxb7 Rc3 24.Rb1 Rc2 25.e3 Be6 26.b4 Ba2 27.Ra1 
Ng4 28.h3 Nxf2 29.Rxf2 Bxe3 30.Rf1 Bc4 31.Kg2 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "12"]
[White "Trois, Francisco"]
[Black "Benitez Ayestaran, Otto"]
[Result "1-0"]
[WhiteElo "2310"]
[ECO "B35"]
[EventDate "1975.10.18"]
[PlyCount "81"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Be3 Nf6 7.Bc4 Qa5 8.O-O 
O-O 9.Bb3 d6 10.h3 Bd7 11.f4 Rad8 12.Nf3 Nb4 13.Qe1 e6 14.e5 Ne8 15.Rd1 
Qc7 16.Qh4 Nc6 17.Nb5 Qb8 18.Nxd6 Nxd6 19.Rxd6 b6 20.Rfd1 Qc7 21.Ba4 f6 
22.exf6 Bxf6 23.Ng5 Bc8 24.Qxh7+ Qxh7 25.Nxh7 Kxh7 26.Bxc6 Rxd6 27.Rxd6 
Bxb2 28.Be4 Rf7 29.Rc6 Bd7 30.Rc7 Be8 31.Rc8 Bd7 32.Ra8 Bb5 33.g4 Kg7 34.
Kg2 Rc7 35.Kf3 Bf6 36.h4 Bxh4 37.g5 e5 38.fxe5 Bc4 39.Bf4 Rf7 40.Ke3 Bf1 
41.e6 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "12"]
[White "Van Riemsdijk, Herman Claudius"]
[Black "Gamarra Caceres, Carlos"]
[Result "0-1"]
[WhiteElo "2370"]
[ECO "B87"]
[EventDate "1975.10.18"]
[PlyCount "94"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bc4 e6 7.O-O Be7 8.Bb3 
O-O 9.f4 b5 10.e5 dxe5 11.fxe5 Nfd7 12.Qh5 Nc6 13.Nxc6 Qb6+ 14.Be3 Qxc6 
15.Rf3 Bb7 16.Raf1 Bc5 17.Nd1 Qe4 18.Bxc5 Nxc5 19.Rg3 Nxb3 20.axb3 Qd4+ 
21.Ne3 Be4 22.Qg4 Qxe5 23.Rf4 f5 24.Qg5 Ra7 25.c3 Rd7 26.b4 Qf6 27.Qh5 g6 
28.Qe2 e5 29.Rf2 Qb6 30.Nf1 Rfd8 31.Qe3 Qxe3 32.Rxe3 Rd1 33.h4 R8d3 34.
Ree2 Rd5 35.Rd2 R5xd2 36.Rxd2 Rxd2 37.Nxd2 Bd5 38.g3 Kf7 39.b3 Ke6 40.c4 
Bc6 41.Kf2 h6 42.Ke3 g5 43.hxg5 hxg5 44.c5 f4+ 45.gxf4 exf4+ 46.Ke2 g4 47.
Nf1 g3 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "13"]
[White "Benitez Ayestaran, Otto"]
[Black "Gouveia, Carlos Eduardo"]
[Result "0-1"]
[ECO "B45"]
[EventDate "1975.10.18"]
[PlyCount "76"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Ndb5 Bb4 7.a3 Bxc3+ 8.
Nxc3 d5 9.g3 d4 10.Ne2 Nxe4 11.Bg2 f5 12.b4 O-O 13.Bb2 e5 14.O-O Qb6 15.
Qd3 Be6 16.c3 dxc3 17.Bxc3 Rad8 18.Qc2 Nxc3 19.Qxc3 Nd4 20.Nxd4 Rxd4 21.
Qe3 e4 22.f3 Bc4 23.Rfe1 exf3 24.Bxf3 f4 25.gxf4 Rfxf4 26.Bg2 h6 27.Kh1 
Kh7 28.Rac1 Bd3 29.Qe7 Qg6 30.Qxb7 Rf2 31.Qc6 Rd6 32.Qa8 Bf5 33.Rc3 Re2 
34.Rcc1 Red2 35.Be4 R6d4 36.Bxf5 Qxf5 37.Rc8 Rxh2+ 38.Kxh2 Rh4+ 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "13"]
[White "Bravo Sedamanos, Hector"]
[Black "Garcia Toledo, Pedro"]
[Result "1/2-1/2"]
[ECO "E92"]
[EventDate "1975.10.18"]
[PlyCount "127"]

1.Nf3 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.d4 O-O 6.Be2 e5 7.dxe5 dxe5 8.Qxd8 
Rxd8 9.Bg5 Re8 10.O-O-O c6 11.Nxe5 Nxe4 12.Nxe4 Bxe5 13.f4 Bf5 14.fxe5 
Bxe4 15.Bg4 Na6 16.Rhe1 Nc5 17.Re3 a5 18.Rd2 b5 19.Rd4 Bxg2 20.Bf6 Bf1 21.
Rd6 Bxc4 22.Rxc6 Ne6 23.b3 Bd5 24.Rd6 Rac8+ 25.Kb2 Rc5 26.Rc3 Rxc3 27.Kxc3
Be4 28.Rb6 b4+ 29.Kd2 Ra8 30.Be2 Kf8 31.Bc4 Bb1 32.Kc1 Be4 33.Kb2 h6 34.a3
bxa3+ 35.Kxa3 g5 36.Rd6 h5 37.Bxe6 fxe6 38.Rxe6 g4 39.Bh4 Ra7 40.Rh6 Rb7 
41.e6 Kg7 42.Rxh5 Bc2 43.Rc5 Bxb3 44.Re5 Rb8 45.Bg3 a4 46.e7 Re8 47.Re4 
Kf6 48.Bd6 Kf5 49.Rf4+ Ke6 50.Bb4 Bd1 51.Rf1 Bf3 52.Re1+ Kd7 53.Re3 Bc6 
54.Rd3+ Kc8 55.Rd4 Rh8 56.Rxg4 Rh3+ 57.Rg3 Rxg3+ 58.hxg3 Kd7 59.Kb2 Ke6 
60.Kc3 Kf5 61.Kd4 Kg4 62.Bd6 Be8 63.Kd5 a3 64.Bxa3 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "13"]
[White "Bronstein, Luis Marcos"]
[Black "Trois, Francisco"]
[Result "0-1"]
[WhiteElo "2355"]
[BlackElo "2310"]
[ECO "E61"]
[EventDate "1975.10.18"]
[PlyCount "48"]

1.d4 Nf6 2.c4 d6 3.Nc3 g6 4.Bg5 Bg7 5.e3 O-O 6.Be2 c5 7.h3 h6 8.Bh4 cxd4 
9.exd4 g5 10.Bg3 d5 11.Nf3 Nc6 12.Be5 Bf5 13.O-O e6 14.Bd3 Bxd3 15.Qxd3 
Nb4 16.Qe2 dxc4 17.Qxc4 Nbd5 18.Nd2 Rc8 19.Qd3 Nxc3 20.bxc3 Nd5 21.Ne4 f5 
22.Nd6 Rxc3 23.Qe2 Qd7 24.Rac1 Bxe5 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "13"]
[White "Camara, Helder"]
[Black "Van Riemsdijk, Herman Claudius"]
[Result "0-1"]
[WhiteElo "2340"]
[BlackElo "2370"]
[ECO "A37"]
[EventDate "1975.10.18"]
[PlyCount "54"]

1.Nf3 c5 2.g3 g6 3.Bg2 Bg7 4.c4 Nc6 5.Nc3 Nh6 6.d3 d6 7.Bd2 e6 8.Rb1 Qd7 
9.O-O b6 10.a3 Bb7 11.b4 O-O 12.Ne4 f5 13.Nc3 Ng4 14.e3 Rad8 15.Qe2 Qc8 
16.b5 Ne7 17.h3 Ne5 18.Ne1 d5 19.f4 Nf7 20.Nf3 Rfe8 21.Rbc1 e5 22.fxe5 
Nxe5 23.Nxe5 Bxe5 24.Nxd5 Nxd5 25.cxd5 Bxd5 26.Bxd5+ Rxd5 27.d4 Rxd4 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "13"]
[White "Donoso Velasco, Pedro"]
[Black "Stekel Grunberg, Moises"]
[Result "1-0"]
[WhiteElo "2380"]
[BlackElo "2350"]
[ECO "B06"]
[EventDate "1975.10.18"]
[PlyCount "99"]

1.e4 g6 2.d4 Bg7 3.Nc3 c6 4.Nf3 d6 5.Be2 b5 6.O-O b4 7.Na4 Nf6 8.e5 Nd5 9.
a3 a5 10.exd6 exd6 11.Bg5 Qc7 12.c4 bxc3 13.bxc3 O-O 14.Bd3 h6 15.Bd2 Nd7 
16.Rb1 Ba6 17.c4 Rab8 18.Qc2 N5f6 19.Bf4 Nh5 20.Be3 Rxb1 21.Rxb1 Rb8 22.
Rxb8+ Nxb8 23.h3 d5 24.Nc5 Bxc4 25.Bxc4 dxc4 26.Qxc4 Nd7 27.Nxd7 Qxd7 28.
g4 Nf6 29.Ne5 Qd5 30.Qxc6 Qxc6 31.Nxc6 a4 32.Ne5 Nd5 33.Bc1 Nc3 34.Kf1 Nb5
35.Bb2 Bf8 36.Nc4 Bg7 37.d5 Bxb2 38.Nxb2 Nxa3 39.Nxa4 Kf8 40.Ke2 Ke7 41.
Kd3 Nb5 42.Nc3 Nd6 43.Ne4 Ne8 44.Kd4 f6 45.f4 Kd7 46.Ng3 Kd6 47.f5 g5 48.
Ne4+ Kd7 49.Kc5 Kc7 50.d6+ 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "13"]
[White "Emma, Jaime"]
[Black "Panno, Oscar"]
[Result "1/2-1/2"]
[WhiteElo "2405"]
[BlackElo "2545"]
[ECO "D94"]
[EventDate "1975.10.18"]
[PlyCount "63"]

1.d4 Nf6 2.c4 c5 3.e3 g6 4.Nf3 Bg7 5.Nc3 O-O 6.Be2 cxd4 7.exd4 d5 8.O-O 
Nc6 9.Re1 Be6 10.Ng5 Bf5 11.Be3 dxc4 12.Bxc4 Na5 13.Bf1 Rc8 14.Qa4 Ng4 15.
Nf3 Nxe3 16.fxe3 Bd7 17.Qb4 e6 18.Rad1 Qb6 19.Qxb6 axb6 20.Ne5 Rfd8 21.
Nxd7 Rxd7 22.Na4 Rd6 23.Rc1 Rcd8 24.Rc7 e5 25.b4 Rc6 26.Rxc6 Nxc6 27.b5 
Nb4 28.dxe5 Bxe5 29.Nxb6 Bc7 30.Nc4 Nxa2 31.b6 Bb8 32.g3 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "13"]
[White "Gamarra Caceres, Carlos"]
[Black "Silva Sanchez, Carlos"]
[Result "1-0"]
[BlackElo "2355"]
[ECO "B83"]
[EventDate "1975.10.18"]
[PlyCount "117"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 Be7 7.O-O Nc6 8.Be3 
O-O 9.f4 Bd7 10.Nb3 a5 11.a4 Nb4 12.Bf3 e5 13.Rf2 exf4 14.Bxf4 Qb6 15.Qd4 
Qxd4 16.Nxd4 Ng4 17.Rd2 Ne5 18.Be2 Ng6 19.Bg3 Bg5 20.Rdd1 Be3+ 21.Bf2 Bxd4
22.Bxd4 Nxc2 23.Rac1 Nxd4 24.Rxd4 Nf4 25.Bf1 Bc6 26.Rxd6 Rfd8 27.Rcd1 Rxd6
28.Rxd6 Kf8 29.Kf2 Ke7 30.Rd2 Rd8 31.Rxd8 Kxd8 32.Ke3 Ng6 33.Kd4 Kc7 34.e5
Nh4 35.Nb5+ Kb6 36.Nd6 Bxa4 37.Nxf7 Nf5+ 38.Ke4 Bc2+ 39.Kf4 Ne7 40.Ke3 Bb3
41.Nd6 a4 42.Bd3 h6 43.Be4 Nc6 44.Kf4 Na5 45.Kf5 Nc4 46.Nxc4+ Bxc4 47.Kg6 
Kc7 48.Kxg7 b5 49.Bc2 h5 50.Kf6 Bd5 51.g3 Bc6 52.h3 b4 53.g4 hxg4 54.hxg4 
a3 55.bxa3 bxa3 56.Bb3 Be4 57.Ba2 Kc6 58.e6 Bd5 59.e7 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "13"]
[White "Sanguineti, Raul"]
[Black "Quinteros, Miguel Angel"]
[Result "1/2-1/2"]
[WhiteElo "2530"]
[BlackElo "2505"]
[ECO "A36"]
[EventDate "1975.10.18"]
[PlyCount "22"]

1.c4 c5 2.Nc3 g6 3.g3 Bg7 4.Bg2 Nc6 5.e3 e6 6.Nge2 Nge7 7.d4 cxd4 8.Nxd4 
Nxd4 9.exd4 O-O 10.O-O d5 11.cxd5 Nxd5 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "13"]
[White "Szmetan, Jorge"]
[Black "Segal, Alexandru Sorin"]
[Result "1/2-1/2"]
[WhiteElo "2435"]
[BlackElo "2385"]
[ECO "C42"]
[EventDate "1975.10.18"]
[PlyCount "86"]

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Be7 7.O-O Nc6 8.Re1 
Bg4 9.c4 Nf6 10.cxd5 Nxd5 11.Nc3 Be6 12.Be4 O-O 13.Qc2 f5 14.Bd3 Ndb4 15.
Qe2 Nxd3 16.Qxe6+ Kh8 17.Rd1 Nxc1 18.Raxc1 Bd6 19.d5 Nb8 20.Nb5 Na6 21.
Nfd4 Bf4 22.Rc3 Rf6 23.Qe2 Qxd5 24.Rf3 Qe5 25.Qxe5 Bxe5 26.Nxf5 g6 27.Nh4 
c6 28.Nc3 Nc5 29.Re3 Re6 30.Nf3 Rae8 31.Nxe5 Rxe5 32.Rxe5 Rxe5 33.b4 Nd3 
34.Kf1 Nxb4 35.Rd8+ Kg7 36.Rd7+ Kf6 37.Rxb7 Nd3 38.g3 Re7 39.Rb3 Nc5 40.
Ra3 Ke5 41.Ra5 Kd6 42.Nd1 Rb7 43.Ne3 a6 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "14"]
[White "Benitez Ayestaran, Otto"]
[Black "Sanguineti, Raul"]
[Result "1/2-1/2"]
[BlackElo "2530"]
[ECO "B44"]
[EventDate "1975.10.18"]
[PlyCount "44"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nb5 d6 6.Bf4 e5 7.Be3 a6 8.N5c3 
Nf6 9.Bc4 Be7 10.Nd5 Nxd5 11.Bxd5 O-O 12.O-O Kh8 13.c3 f5 14.exf5 Bxf5 15.
Nd2 Qe8 16.Ne4 Qg6 17.f3 Rad8 18.Rf2 Rd7 19.Rd2 Rc8 20.Qb3 Nd8 21.Rad1 Bf8
22.Ng3 Be6 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "14"]
[White "Camara, Helder"]
[Black "Szmetan, Jorge"]
[Result "1/2-1/2"]
[WhiteElo "2340"]
[BlackElo "2435"]
[ECO "A39"]
[EventDate "1975.10.18"]
[PlyCount "95"]

1.d4 Nf6 2.Nf3 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O c5 6.c4 Nc6 7.Nc3 cxd4 8.Nxd4 
Nxd4 9.Qxd4 d6 10.Qd2 Be6 11.b3 d5 12.cxd5 Nxd5 13.Bxd5 Bxd5 14.Bb2 Be6 
15.Qxd8 Rfxd8 16.Rfd1 b5 17.Rac1 Rac8 18.Rxd8+ Rxd8 19.Ba3 a5 20.Nxb5 Rd2 
21.Bxe7 Rxe2 22.a4 Bb2 23.Rd1 Bxb3 24.Rd8+ Kg7 25.Bf8+ Kf6 26.Nd4 Bxd4 27.
Rxd4 Ra2 28.Kg2 Bxa4 29.Kf3 Bb3 30.Ke3 g5 31.h4 Be6 32.hxg5+ Kxg5 33.Be7+ 
Kg6 34.g4 Rc2 35.Ra4 Rc3+ 36.Kf4 h6 37.Rxa5 Rc4+ 38.Kg3 Rxg4+ 39.Kh2 Rf4 
40.Kg3 Rg4+ 41.Kh2 Bc8 42.Ra3 Rf4 43.Bc5 h5 44.Rg3+ Kf6 45.Rg8 Bg4 46.Be3 
Rb4 47.Kg3 Rb1 48.Kf4 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "14"]
[White "Gamarra Caceres, Carlos"]
[Black "Bravo Sedamanos, Hector"]
[Result "0-1"]
[ECO "C81"]
[EventDate "1975.10.18"]
[PlyCount "154"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 
Be6 9.Qe2 Be7 10.Rd1 Nc5 11.c4 d4 12.cxb5 d3 13.Qf1 Nd4 14.Nxd4 Qxd4 15.
Nc3 O-O 16.bxa6 Qxe5 17.Re1 Qf5 18.Re3 Rfd8 19.Rf3 Qg4 20.Rg3 Qb4 21.Bxe6 
fxe6 22.Be3 Qxb2 23.Bxc5 Bxc5 24.Ne4 Be7 25.Rd1 Rd4 26.Nd2 Qxa2 27.Rxd3 
Rxd3 28.Qxd3 Qxa6 29.Qb3 Qb6 30.Qc2 Qd4 31.Nf3 Qa4 32.Qe2 Qa2 33.Qe4 Rb8 
34.Nd4 Rd8 35.Rf1 Qd5 36.Qxe6+ Qxe6 37.Nxe6 Rc8 38.Rc1 c5 39.Kf1 Kf7 40.
Nd4 Kf6 41.Nc2 Ke6 42.Re1+ Kd7 43.Rd1+ Kc6 44.Ne3 Bf6 45.Ke2 Re8 46.Kd3 
Rd8+ 47.Kc2 Ra8 48.Rf1 Ra2+ 49.Kd3 Rb2 50.Nd1 Rb3+ 51.Kc2 c4 52.Re1 Ra3 
53.Re8 Ra2+ 54.Kc1 Bg5+ 55.Kb1 Rd2 56.Re6+ Kd7 57.Re1 Bf6 58.Rf1 Bd4 59.g3
Kc6 60.h4 c3 61.Ne3 Rb2+ 62.Kc1 Rxf2 63.Re1 Bc5 64.Nc2 Rg2 65.Re6+ Kd7 66.
Re5 Rg1+ 67.Re1 Rxg3 68.Rd1+ Ke7 69.Nd4 Bxd4 70.Rxd4 Kf6 71.Rd5 Kg6 72.Kc2
Kh6 73.Rc5 Rh3 74.Rc4 g6 75.Kd1 Kh5 76.Ke2 c2 77.Kd2 Rxh4 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "14"]
[White "Garcia Toledo, Pedro"]
[Black "Segal, Alexandru Sorin"]
[Result "1/2-1/2"]
[BlackElo "2385"]
[ECO "B03"]
[EventDate "1975.10.18"]
[PlyCount "52"]

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 dxe5 6.fxe5 c5 7.d5 e6 8.Nc3 exd5 
9.cxd5 c4 10.Nf3 Bg4 11.Qd4 Bxf3 12.gxf3 Bb4 13.Bxc4 Bxc3+ 14.bxc3 Nxc4 
15.Qxc4 O-O 16.Qd4 Nd7 17.O-O Nb6 18.Rd1 Rc8 19.Be3 Qe7 20.Rac1 Rc4 21.Qd3
Qxe5 22.Bxb6 Rh4 23.Rc2 axb6 24.d6 Ra4 25.Re2 Qg5+ 26.Kh1 Raa8 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "14"]
[White "Gouveia, Carlos Eduardo"]
[Black "Emma, Jaime"]
[Result "1/2-1/2"]
[BlackElo "2405"]
[ECO "A24"]
[EventDate "1975.10.18"]
[PlyCount "103"]

1.c4 g6 2.Nc3 Bg7 3.g3 e5 4.Bg2 d6 5.e3 Nd7 6.Nge2 Ngf6 7.O-O O-O 8.Rb1 
Re8 9.d3 Nh5 10.g4 Nhf6 11.Ng3 Nf8 12.h3 Ne6 13.b4 c6 14.Nge4 Nxe4 15.dxe4
Qh4 16.Qf3 h5 17.gxh5 Ng5 18.Qg3 Qxg3 19.fxg3 Nxh3+ 20.Kh2 Ng5 21.hxg6 
fxg6 22.b5 Be6 23.bxc6 bxc6 24.Rd1 Bf8 25.Ba3 Rad8 26.Bf1 Rd7 27.Be2 Red8 
28.Rh1 Rh7+ 29.Kg2 Rxh1 30.Kxh1 Nf7 31.Kg2 Bh6 32.Bc1 Kg7 33.Rb7 Rd7 34.
Rb8 Ng5 35.Rc8 c5 36.Rc6 Bh3+ 37.Kg1 Be6 38.Ra6 Kf7 39.a4 Ke7 40.Kg2 Rb7 
41.Nb5 Nxe4 42.Bf3 d5 43.Rxe6+ Kxe6 44.cxd5+ Kxd5 45.Bxe4+ Kxe4 46.Nd6+ 
Kd3 47.Nxb7 c4 48.Kf2 Bf8 49.e4 c3 50.Kf3 c2 51.Na5 Bb4 52.Nc6 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "14"]
[White "Silva Sanchez, Carlos"]
[Black "Panno, Oscar"]
[Result "0-1"]
[WhiteElo "2355"]
[BlackElo "2545"]
[ECO "B43"]
[EventDate "1975.10.18"]
[PlyCount "130"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 Qc7 6.g3 Bb4 7.Ne2 Nf6 8.Bg2 
Be7 9.O-O O-O 10.h3 Nc6 11.Nf4 b5 12.g4 d6 13.Nce2 Bb7 14.Ng3 d5 15.exd5 
Rad8 16.c3 Na5 17.Qe2 Nxd5 18.Nd3 Rfe8 19.Ne4 h6 20.g5 hxg5 21.Nxg5 Nxc3 
22.bxc3 Bxg2 23.Kxg2 Qc6+ 24.Qf3 Bxg5 25.Ne5 Qd5 26.Bxg5 f6 27.Qxd5 Rxd5 
28.Nf3 fxg5 29.a4 Nb3 30.Ra3 Nc5 31.axb5 axb5 32.c4 bxc4 33.Rc1 e5 34.Rxc4
e4 35.Nh2 Nd3 36.Rca4 Nf4+ 37.Kg3 Rd1 38.Ng4 Rh1 39.Ne3 Kh7 40.Ra8 Re5 41.
R3a5 Rxh3+ 42.Kg4 Rh4+ 43.Kg3 Rxa5 44.Rxa5 Kg6 45.Ra8 Nh5+ 46.Kg2 Nf6 47.
Ra7 Rf4 48.Rb7 Kh6 49.Ra7 g4 50.Ra6 g6 51.Re6 Rf3 52.Rxe4 Rxf2+ 53.Kxf2 
Nxe4+ 54.Ke2 Kg5 55.Ng2 Ng3+ 56.Ke3 Nf5+ 57.Kf2 g3+ 58.Kg1 Kg4 59.Ne1 Nd4 
60.Kg2 Ne2 61.Kh1 Kh3 62.Ng2 g5 63.Ne1 Nf4 64.Kg1 g2 65.Kf2 g4 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "14"]
[White "Stekel Grunberg, Moises"]
[Black "Quinteros, Miguel Angel"]
[Result "0-1"]
[WhiteElo "2350"]
[BlackElo "2505"]
[ECO "A24"]
[EventDate "1975.10.18"]
[PlyCount "58"]

1.c4 g6 2.Nc3 Bg7 3.g3 e5 4.Bg2 d6 5.e3 Nf6 6.Nge2 O-O 7.O-O Re8 8.d3 c6 
9.e4 a6 10.h3 b5 11.a3 Bb7 12.b4 Nbd7 13.a4 a5 14.axb5 axb4 15.Rxa8 Qxa8 
16.bxc6 Bxc6 17.Nd5 Nxd5 18.exd5 Ba4 19.Qd2 Qb7 20.Bb2 Nc5 21.Nc1 Qb6 22.
Kh2 f5 23.Re1 Bd7 24.Na2 Rb8 25.Rb1 b3 26.Nc3 Ra8 27.Kg1 Qb4 28.Bf1 Ra2 
29.Qc1 h5 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "14"]
[White "Trois, Francisco"]
[Black "Donoso Velasco, Pedro"]
[Result "0-1"]
[WhiteElo "2310"]
[BlackElo "2380"]
[ECO "C65"]
[EventDate "1975.10.18"]
[PlyCount "66"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 d6 5.c3 Bd7 6.O-O g6 7.d4 Bg7 8.dxe5 Nxe5
9.Bxd7+ Qxd7 10.Nxe5 dxe5 11.Qxd7+ Nxd7 12.Be3 O-O-O 13.Nd2 f5 14.f3 Nf6 
15.Bg5 h6 16.Bxf6 Bxf6 17.Nc4 b5 18.Ne3 Bg5 19.Rfe1 fxe4 20.fxe4 Rd2 21.
Ng4 Re8 22.a4 h5 23.Ne3 Rf8 24.Nd1 c6 25.axb5 cxb5 26.Rf1 Rfd8 27.Re1 Rc2 
28.Ne3 Bxe3+ 29.Rxe3 Rxb2 30.h4 Kb7 31.Rg3 Rd6 32.Rg5 Re6 33.g4 a6 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "14"]
[White "Van Riemsdijk, Herman Claudius"]
[Black "Bronstein, Luis Marcos"]
[Result "1-0"]
[WhiteElo "2370"]
[BlackElo "2355"]
[ECO "B88"]
[EventDate "1975.10.18"]
[PlyCount "51"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 d6 6.Be3 Nf6 7.Bc4 Be7 8.Bb3 
O-O 9.f4 a6 10.Qf3 Bd7 11.O-O Ne8 12.Rad1 Na5 13.g4 Nxb3 14.axb3 Nc7 15.h4
Qe8 16.g5 b5 17.f5 b4 18.Na4 Bxa4 19.bxa4 Qxa4 20.f6 Bd8 21.fxg7 Kxg7 22.
Qh5 Be7 23.Rf6 Bxf6 24.Qh6+ Kh8 25.Qxf6+ Kg8 26.Nf5 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "15"]
[White "Bravo Sedamanos, Hector"]
[Black "Donoso Velasco, Pedro"]
[Result "1-0"]
[BlackElo "2380"]
[ECO "D19"]
[EventDate "1975.10.18"]
[PlyCount "83"]

1.d4 Nf6 2.Nf3 d5 3.c4 c6 4.Nc3 dxc4 5.a4 Bf5 6.e3 e6 7.Bxc4 Bb4 8.O-O O-O
9.Qe2 Nbd7 10.Bd2 Qe7 11.Nh4 Ne4 12.Nxf5 exf5 13.Nxe4 fxe4 14.Bxb4 Qxb4 
15.f3 Nf6 16.fxe4 Nxe4 17.Rf4 Qe7 18.Bd3 Ng5 19.Qf2 Rae8 20.Re1 Ne6 21.Rh4
g6 22.Rf1 Qg5 23.Bc4 Kg7 24.Rh3 f5 25.Qd2 h5 26.d5 cxd5 27.Qxd5 Qe7 28.e4 
f4 29.Rhf3 Kh6 30.a5 Nc7 31.Qd4 Rd8 32.Qf2 Kg7 33.Rxf4 Rxf4 34.Qxf4 Qc5+ 
35.Qf2 Qxf2+ 36.Rxf2 Rd1+ 37.Rf1 Rxf1+ 38.Kxf1 Kf6 39.Ke2 g5 40.Ke3 Ke5 
41.Bf7 h4 42.Kf3 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "15"]
[White "Bronstein, Luis Marcos"]
[Black "Gouveia, Carlos Eduardo"]
[Result "1-0"]
[WhiteElo "2355"]
[ECO "B45"]
[EventDate "1975.10.18"]
[PlyCount "77"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Nxc6 bxc6 7.e5 Nd5 8.
Nxd5 cxd5 9.Bd3 d6 10.Bf4 Be7 11.O-O O-O 12.Qh5 g6 13.Qh6 Re8 14.Bb5 Bd7 
15.Bxd7 Qxd7 16.Rad1 Rac8 17.exd6 Bf6 18.Qh3 Bxb2 19.Rxd5 f5 20.Rd2 Bc3 
21.Rdd1 e5 22.Bd2 Bd4 23.Qb3+ Kg7 24.Bb4 Rb8 25.Qa3 Rec8 26.c3 Bb6 27.Qa6 
Rc6 28.Qe2 Re8 29.Rd5 e4 30.c4 e3 31.c5 exf2+ 32.Qxf2 Bd8 33.Bc3+ Bf6 34.
Bxf6+ Kxf6 35.Re1 Rcc8 36.Qd4+ Kg5 37.h4+ Kh6 38.Qf4+ Kg7 39.Rde5 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "15"]
[White "Emma, Jaime"]
[Black "Benitez Ayestaran, Otto"]
[Result "1-0"]
[WhiteElo "2405"]
[ECO "A20"]
[EventDate "1975.10.18"]
[PlyCount "29"]

1.c4 e5 2.g3 Nf6 3.Bg2 Nc6 4.d3 Bb4+ 5.Bd2 Bxd2+ 6.Qxd2 d5 7.cxd5 Nxd5 8.
Nc3 Nce7 9.Nf3 h6 10.O-O O-O 11.b4 Nxb4 12.Nxe5 Nbd5 13.Rfc1 b6 14.Nxd5 
Nxd5 15.Nc6 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "15"]
[White "Garcia Toledo, Pedro"]
[Black "Trois, Francisco"]
[Result "0-1"]
[BlackElo "2310"]
[ECO "C50"]
[EventDate "1975.10.18"]
[PlyCount "100"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Be7 4.d4 d6 5.d5 Nb8 6.Bd3 Nf6 7.c4 Nbd7 8.Nc3 O-O
9.O-O Nc5 10.Bc2 a5 11.b3 Ne8 12.a3 g6 13.Bh6 Ng7 14.b4 Nd7 15.Qd2 Nf6 16.
h3 Kh8 17.c5 Ng8 18.cxd6 cxd6 19.Be3 Bd7 20.Ba4 f5 21.bxa5 Bxa4 22.Nxa4 
fxe4 23.Nh2 Qxa5 24.Nc3 Rfc8 25.Nxe4 Qxd2 26.Bxd2 Rc4 27.f3 Nf6 28.Nxf6 
Bxf6 29.Ng4 Bd8 30.Rab1 Rd4 31.Bc3 Rd3 32.Ba1 h5 33.Nh6 Rdxa3 34.f4 Bb6+ 
35.Rxb6 Rxa1 36.fxe5 Rxf1+ 37.Kxf1 Rf8+ 38.Ke2 Kh7 39.exd6 Kxh6 40.Rxb7 
Rd8 41.d7 Kg5 42.Kf3 Nf5 43.Rc7 Nd6 44.g3 Kf6 45.h4 Kf5 46.Ra7 Nf7 47.g4+ 
hxg4+ 48.Kg3 Nd6 49.Rc7 Ne4+ 50.Kg2 Nf6 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "15"]
[White "Panno, Oscar"]
[Black "Van Riemsdijk, Herman Claudius"]
[Result "1-0"]
[WhiteElo "2545"]
[BlackElo "2370"]
[ECO "A29"]
[EventDate "1975.10.18"]
[PlyCount "97"]

1.c4 Nf6 2.Nc3 e5 3.g3 d5 4.cxd5 Nxd5 5.Bg2 Nb6 6.Nf3 Nc6 7.O-O Be7 8.d3 
O-O 9.Be3 f5 10.Qc1 h6 11.Rd1 Bf6 12.Bc5 Rf7 13.e3 Be6 14.d4 e4 15.Bxb6 
exf3 16.Bxf3 axb6 17.d5 Bd7 18.dxc6 bxc6 19.Ne2 Ra5 20.b4 Ra7 21.Nd4 Qf8 
22.Bxc6 Bxc6 23.Nxc6 Bxa1 24.Nxa7 Qxb4 25.Qxa1 Qa4 26.Nc8 Qe8 27.Nxb6 cxb6
28.Rd6 Qb5 29.Qd1 Qc5 30.Rd5 Qc4 31.Qb3 Qxb3 32.axb3 Rf6 33.h4 h5 34.Kg2 
Kf7 35.Rd7+ Kg6 36.Kf3 Rc6 37.Kf4 Kf6 38.f3 g6 39.e4 Ke6 40.Rd4 fxe4 41.
fxe4 Rc1 42.Rb4 Rf1+ 43.Kg5 Rg1 44.Rxb6+ Ke5 45.Kxg6 Rxg3+ 46.Kxh5 Rg8 47.
Rb5+ Kf4 48.Kh6 Kxe4 49.h5 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "15"]
[White "Quinteros, Miguel Angel"]
[Black "Silva Sanchez, Carlos"]
[Result "1/2-1/2"]
[WhiteElo "2505"]
[BlackElo "2355"]
[ECO "D27"]
[EventDate "1975.10.18"]
[PlyCount "52"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.a4 Nc6 8.Qe2 cxd4
9.Rd1 Be7 10.exd4 Nb4 11.Nc3 Nbd5 12.Ne5 O-O 13.Rd3 Nxc3 14.bxc3 Nd5 15.
Rh3 Bg5 16.Qc2 h6 17.Bxg5 Qxg5 18.Rg3 Qh4 19.Qb3 Nf4 20.a5 Qd8 21.Bd3 Qc7 
22.Rf3 Nxd3 23.Rxd3 Bd7 24.c4 Be8 25.Nf3 Rc8 26.Nd2 Bc6 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "15"]
[White "Sanguineti, Raul"]
[Black "Camara, Helder"]
[Result "1/2-1/2"]
[WhiteElo "2530"]
[BlackElo "2340"]
[ECO "E95"]
[EventDate "1975.10.18"]
[PlyCount "59"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nbd7 8.Re1 c6 
9.Bf1 Re8 10.d5 c5 11.a3 Rf8 12.Bg5 h6 13.Bh4 a6 14.Nd2 Qe8 15.b4 Nh5 16.
bxc5 Nxc5 17.Nb3 b6 18.Nxc5 bxc5 19.Rb1 Nf4 20.Rb6 g5 21.Bg3 Qd8 22.Qb3 h5
23.f3 h4 24.Bf2 g4 25.fxg4 Bxg4 26.Nd1 Bxd1 27.Rxd1 f5 28.exf5 Rxf5 29.Re1
Qg5 30.Be3 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "15"]
[White "Segal, Alexandru Sorin"]
[Black "Stekel Grunberg, Moises"]
[Result "1/2-1/2"]
[WhiteElo "2385"]
[BlackElo "2350"]
[ECO "E94"]
[EventDate "1975.10.18"]
[PlyCount "142"]

1.d4 g6 2.c4 Bg7 3.Nc3 d6 4.e4 e5 5.d5 Nf6 6.Be2 Nbd7 7.Nf3 Nc5 8.Qc2 a5 
9.O-O O-O 10.Ne1 Nfd7 11.Nd3 f5 12.exf5 gxf5 13.Nxc5 Nxc5 14.f4 Bd7 15.Be3
b6 16.Rad1 Qf6 17.Qd2 Qg6 18.Rf3 Kh8 19.Rg3 Qf7 20.Rf1 Bh6 21.Bd1 Rg8 22.
Rxg8+ Rxg8 23.Bc2 Qh5 24.Qf2 Qg4 25.g3 e4 26.Bd4+ Bg7 27.Ne2 h5 28.Bxg7+ 
Qxg7 29.Qd4 Kh7 30.Kf2 Re8 31.Ke3 Ra8 32.h4 Rh8 33.Nc3 Qxd4+ 34.Kxd4 Kg7 
35.b3 Nb7 36.Bd1 Be8 37.Be2 Nc5 38.Rb1 Nb7 39.Ke3 Rh7 40.Bd1 Rh8 41.Ne2 
Nd8 42.Nd4 Kg6 43.Rc1 Bd7 44.a3 Nf7 45.Rc3 Nh6 46.Kd2 Ng8 47.Nc2 Nf6 48.
Ne3 Rh7 49.Kc1 Rh8 50.Kb2 Kf7 51.Rc2 Rg8 52.Rg2 Ra8 53.Nc2 Re8 54.Rg1 Ra8 
55.Nd4 Rg8 56.Be2 Ra8 57.Rc1 Rg8 58.Rc3 Ra8 59.Bd1 Ra7 60.b4 axb4 61.axb4 
Ke7 62.Ra3 Rxa3 63.Kxa3 b5 64.cxb5 Nxd5 65.Bxh5 Nc3 66.Kb3 Nxb5 67.Kc4 
Nxd4 68.Kxd4 Be6 69.Be2 Kf6 70.Bb5 Bb3 71.Bc6 Bd1 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "15"]
[White "Szmetan, Jorge"]
[Black "Gamarra Caceres, Carlos"]
[Result "1-0"]
[WhiteElo "2435"]
[ECO "A62"]
[EventDate "1975.10.18"]
[PlyCount "113"]

1.Nf3 g6 2.g3 Bg7 3.d4 Nf6 4.Bg2 O-O 5.O-O c5 6.d5 e6 7.c4 exd5 8.cxd5 d6 
9.Nc3 Qe7 10.Nd2 Nbd7 11.a4 b6 12.Nc4 Ne5 13.Na3 Ba6 14.Ncb5 Bxb5 15.axb5 
a6 16.Qb3 axb5 17.Qxb5 Rfb8 18.Bd2 Ne8 19.Nc2 Nc7 20.Qb3 b5 21.Ne3 c4 22.
Qc2 Nd7 23.Bc3 Nc5 24.Bxg7 Kxg7 25.h4 Nb3 26.Rxa8 Rxa8 27.h5 Ne8 28.Ng4 f5
29.Nh2 Ra2 30.Qb1 Ra7 31.Qc2 Qf6 32.hxg6 hxg6 33.e3 Ra2 34.Rb1 Nc5 35.Nf3 
Na4 36.Nd4 Nc7 37.Nxb5 Nxb5 38.Qxc4 Rxb2 39.Rxb2 Qxb2 40.Qxa4 Nc3 41.Qd7+ 
Kh6 42.Qxd6 Ne2+ 43.Kh2 Qa1 44.Qf8+ Kh7 45.Qf7+ Kh6 46.Qg8 Qg1+ 47.Kh3 Qa1
48.d6 g5 49.Qe6+ Kh5 50.g4+ fxg4+ 51.Qxg4+ Kg6 52.Be4+ Kf6 53.Qf5+ Kg7 54.
Qh7+ Kf8 55.Qe7+ Kg8 56.Bd5+ Kh8 57.Qf8+ 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "16"]
[White "Benitez Ayestaran, Otto"]
[Black "Bravo Sedamanos, Hector"]
[Result "1-0"]
[ECO "B83"]
[EventDate "1975.10.18"]
[PlyCount "77"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 e6 7.O-O Be7 8.Be3 
O-O 9.f4 Bd7 10.Qd2 a6 11.a4 Na5 12.b4 Nc6 13.b5 Nxd4 14.Bxd4 Qc7 15.e5 
dxe5 16.fxe5 Nd5 17.Ne4 axb5 18.axb5 Rxa1 19.Rxa1 f6 20.exf6 gxf6 21.Rd1 
Bc8 22.g3 f5 23.Qh6 e5 24.Ng5 Nf6 25.Bxe5 Bc5+ 26.Kf1 Qg7 27.Bc4+ Kh8 28.
Qh4 Be7 29.Ne6 Bxe6 30.Bxe6 Rd8 31.Rxd8+ Bxd8 32.Bxf5 Kg8 33.Qc4+ Kh8 34.
Qe6 b6 35.g4 h5 36.h3 hxg4 37.hxg4 Qg5 38.Qe8+ Kg7 39.Qxd8 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "16"]
[White "Camara, Helder"]
[Black "Donoso Velasco, Pedro"]
[Result "0-1"]
[WhiteElo "2340"]
[BlackElo "2380"]
[ECO "D02"]
[EventDate "1975.10.18"]
[PlyCount "102"]

1.d4 d5 2.Nf3 Nf6 3.Bf4 e6 4.e3 c5 5.c3 Nc6 6.Bd3 Qb6 7.Qc2 Bd7 8.Nbd2 Rc8
9.Qb1 Be7 10.h3 O-O 11.O-O Rfd8 12.Ne5 Be8 13.g4 g6 14.Ndf3 cxd4 15.exd4 
Nxe5 16.Bxe5 Bb5 17.Bxb5 Qxb5 18.Bxf6 Bxf6 19.Qc2 Qc4 20.Qb3 b5 21.Kg2 a5 
22.Qd1 b4 23.cxb4 Qxb4 24.Qb3 Rc4 25.Rfd1 Rdc8 26.Qe3 Bg7 27.b3 Rc2 28.Qf4
Qb8 29.Qe3 R8c3 30.Rd3 Qc7 31.a3 Rxd3 32.Qxd3 Qc3 33.Qxc3 Rxc3 34.Rb1 Bf8 
35.b4 a4 36.Ra1 Bd6 37.Ra2 Bf4 38.Ne1 Kf8 39.Kf1 Ke7 40.Ke2 Rxh3 41.Nd3 
Bd6 42.Nb2 h5 43.gxh5 gxh5 44.Nxa4 h4 45.Ra1 Rb3 46.Nc5 Rb2+ 47.Kf3 h3 48.
Nd3 Rb3 49.Ke2 h2 50.f4 Rxa3 51.Rh1 Kf6 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "16"]
[White "Garcia Toledo, Pedro"]
[Black "Panno, Oscar"]
[Result "0-1"]
[BlackElo "2545"]
[ECO "B85"]
[EventDate "1975.10.18"]
[PlyCount "82"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Be2 Nf6 6.Nc3 Qc7 7.O-O Bb4 8.Bg5 
Be7 9.Be3 d6 10.f4 Nc6 11.Qe1 O-O 12.Bf3 Bd7 13.Rd1 Kh8 14.Kh1 Rac8 15.Qf2
b5 16.a3 Qb8 17.g4 Nxd4 18.Bxd4 Bc6 19.g5 Nd7 20.Qh4 e5 21.Be3 exf4 22.
Bxf4 Ne5 23.Bxe5 dxe5 24.Bg4 Rcd8 25.Nd5 Bxd5 26.exd5 Qd6 27.Qh5 g6 28.Qh4
Qc7 29.Rf3 Qd6 30.Re1 Qxd5 31.b4 f5 32.gxf6 Bxf6 33.Qh3 Bg5 34.Qg2 Bf4 35.
Rd3 Qc4 36.Rxd8 Rxd8 37.Bf3 Rd2 38.Be2 Qxc2 39.Qa8+ Kg7 40.Qb7+ Kh6 41.Qf3
Qf5 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "16"]
[White "Gouveia, Carlos Eduardo"]
[Black "Szmetan, Jorge"]
[Result "1/2-1/2"]
[BlackElo "2435"]
[ECO "D11"]
[EventDate "1975.10.18"]
[PlyCount "86"]

1.g3 d5 2.d4 Nf6 3.Bg2 c6 4.Nf3 Bf5 5.O-O e6 6.c4 Be7 7.Nc3 O-O 8.Qb3 Qb6 
9.Qxb6 axb6 10.Ne5 dxc4 11.e4 Bg6 12.Nxc4 b5 13.Ne5 b4 14.Nxg6 hxg6 15.Ne2
Nbd7 16.Bg5 Nb6 17.h4 Ra5 18.Rfd1 Rfa8 19.Nc1 Bf8 20.b3 Nc8 21.Bd2 Na7 22.
Nd3 Nb5 23.Bxb4 Rxa2 24.Rxa2 Rxa2 25.e5 Nd7 26.Bf1 Nxd4 27.Nc1 Rc2 28.Rxd4
Rxc1 29.Rxd7 Bxb4 30.Rxb7 Bc5 31.Rb8+ Kh7 32.Rb7 Kg8 33.Rb8+ Kh7 34.Rb7 
Rc3 35.Rxf7 Rxg3+ 36.Bg2 Rxb3 37.Bxc6 Kh6 38.Kg2 Rb4 39.Bd7 Rxh4 40.Bxe6 
Re4 41.f4 g5 42.fxg5+ Kxg5 43.Rxg7+ Kf4 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "16"]
[White "Segal, Alexandru Sorin"]
[Black "Quinteros, Miguel Angel"]
[Result "0-1"]
[WhiteElo "2385"]
[BlackElo "2505"]
[ECO "A53"]
[EventDate "1975.10.18"]
[PlyCount "68"]

1.d4 Nf6 2.c4 d6 3.Nc3 c6 4.Nf3 Bg4 5.e3 Nbd7 6.Be2 e5 7.O-O Be7 8.h3 Bxf3
9.Bxf3 O-O 10.b4 Nb6 11.Qb3 exd4 12.exd4 d5 13.c5 Nbd7 14.Bf4 Re8 15.a4 
Nf8 16.b5 Ne6 17.Be3 Rb8 18.Rfd1 Nd7 19.a5 a6 20.bxc6 bxc6 21.Qc2 Bg5 22.
Bxg5 Qxg5 23.Ne2 h5 24.Rdb1 Nc7 25.Rb6 Nxb6 26.cxb6 Nb5 27.Qxc6 Re6 28.Qc1
Qd8 29.Bxh5 Rc8 30.Qf1 Qg5 31.Ng3 f5 32.Bf3 f4 33.Ne2 Re7 34.Rb1 Rce8 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "16"]
[White "Silva Sanchez, Carlos"]
[Black "Emma, Jaime"]
[Result "1-0"]
[WhiteElo "2355"]
[BlackElo "2405"]
[ECO "B74"]
[EventDate "1975.10.18"]
[PlyCount "69"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Be3 Nf6 7.Be2 O-O 8.Nb3 
a5 9.a4 d6 10.O-O Be6 11.f4 Nb4 12.g4 Rc8 13.f5 Bc4 14.Rf2 Nd7 15.Qd2 Bxe2
16.Qxe2 Ne5 17.Raf1 Nc4 18.Bd4 Nxb2 19.Bxg7 Kxg7 20.Nd5 Nxd5 21.exd5 Nc4 
22.Kh1 Ne5 23.Rf4 Qb6 24.g5 Rc3 25.fxg6 hxg6 26.Nd4 Rcc8 27.Qf2 Qd8 28.c4 
Qe8 29.Qb2 Qxa4 30.Qxb7 Qd7 31.Qb2 Qh3 32.c5 Rxc5 33.Ne6+ fxe6 34.Rxf8 Rc3
35.Qb7 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "16"]
[White "Stekel Grunberg, Moises"]
[Black "Bronstein, Luis Marcos"]
[Result "1/2-1/2"]
[WhiteElo "2350"]
[BlackElo "2355"]
[ECO "D77"]
[EventDate "1975.10.18"]
[PlyCount "84"]

1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.O-O O-O 5.c4 d5 6.d4 dxc4 7.Na3 c3 8.bxc3 c5
9.Ne5 Nbd7 10.Nac4 Nxe5 11.Nxe5 Rb8 12.Rb1 Nd5 13.Bb2 Nb6 14.Ba3 Bxe5 15.
dxe5 Qxd1 16.Rbxd1 Na4 17.c4 Be6 18.Bd5 Rfd8 19.Rd3 Bf5 20.Rb3 b6 21.Bc1 
Rxd5 22.cxd5 Rd8 23.Ra3 b5 24.Rd1 Bc2 25.Rd2 Be4 26.f3 Bf5 27.d6 exd6 28.
e4 Be6 29.exd6 Bd7 30.Rxa4 bxa4 31.Rb2 Bc6 32.e5 f6 33.f4 Kf7 34.Rc2 fxe5 
35.fxe5 Ke6 36.Rxc5 Bd7 37.Kf2 Rc8 38.Rxc8 Bxc8 39.Bb2 a3 40.Bc3 Bb7 41.
Ke3 Bd5 42.Kf4 h6 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "16"]
[White "Trois, Francisco"]
[Black "Gamarra Caceres, Carlos"]
[Result "1-0"]
[WhiteElo "2310"]
[ECO "E90"]
[EventDate "1975.10.18"]
[PlyCount "53"]

1.Nf3 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.d4 O-O 6.h3 e5 7.d5 Nbd7 8.Be3 Nc5 
9.Nd2 a5 10.g4 Ne8 11.h4 f5 12.gxf5 gxf5 13.Qe2 c6 14.Bh3 cxd5 15.cxd5 
Nxe4 16.Ndxe4 fxe4 17.O-O-O Nf6 18.h5 Rf7 19.Rdg1 Kh8 20.Kb1 b5 21.h6 Bf8 
22.Be6 b4 23.Nxe4 Ba6 24.Qc2 Rc8 25.Nxf6 Bxh6 26.Bxc8 Bxc8 27.Rxh6 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "16"]
[White "Van Riemsdijk, Herman Claudius"]
[Black "Sanguineti, Raul"]
[Result "1/2-1/2"]
[WhiteElo "2370"]
[BlackElo "2530"]
[ECO "C67"]
[EventDate "1975.10.18"]
[PlyCount "30"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d4 Nxe4 5.dxe5 Be7 6.O-O O-O 7.Qe2 Nc5 8.Rd1
a6 9.Bxc6 bxc6 10.Nd4 Qe8 11.Nc3 f6 12.exf6 Bxf6 13.Qc4+ Qf7 14.Qxf7+ Rxf7
15.Be3 Bxd4 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "17"]
[White "Bravo Sedamanos, Hector"]
[Black "Gouveia, Carlos Eduardo"]
[Result "1-0"]
[ECO "C82"]
[EventDate "1975.10.18"]
[PlyCount "79"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 
Be6 9.c3 Be7 10.Nbd2 Nc5 11.Bc2 Bg4 12.h3 Bh5 13.Re1 O-O 14.Nf1 Qd7 15.Ng3
Bg6 16.Be3 Rad8 17.Bg5 Rfe8 18.Bxg6 hxg6 19.Qd2 Ne6 20.Bxe7 Qxe7 21.Rad1 
Na5 22.b3 Nb7 23.Nd4 Qd7 24.f4 c5 25.Nf3 Qc6 26.f5 gxf5 27.Nxf5 Rd7 28.Qf2
Nf8 29.N3h4 f6 30.exf6 Rxe1+ 31.Qxe1 Qxf6 32.Rxd5 Rf7 33.Re5 Rd7 34.Ne7+ 
Rxe7 35.Rxe7 Nd6 36.Qe5 Qh6 37.Nf5 Nxf5 38.Qxf5 Ng6 39.Re8+ Kh7 40.Kh2 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "17"]
[White "Bronstein, Luis Marcos"]
[Black "Garcia Toledo, Pedro"]
[Result "1-0"]
[WhiteElo "2355"]
[ECO "B99"]
[EventDate "1975.10.18"]
[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 h6 11.h4 Nc5 12.f5 hxg5 13.hxg5 Nxd3+ 14.cxd3 Rf8 15.
Kb1 Qb6 16.gxf6 Bxf6 17.Nde2 Bd7 18.Rc1 Rc8 19.Rc2 Ke7 20.Rhc1 Rc5 21.d4 
Rc4 22.fxe6 fxe6 23.Qg3 Bxd4 24.Nf4 Kd8 25.Qg4 Re8 26.Ng6 Rb4 27.a3 Rc4 
28.e5 dxe5 29.Qg5+ Kc7 30.Na4 Bxa4 31.Rxc4+ Bc6 32.Rb4 Qa5 33.Rxd4 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "17"]
[White "Donoso Velasco, Pedro"]
[Black "Benitez Ayestaran, Otto"]
[Result "1/2-1/2"]
[WhiteElo "2380"]
[ECO "C92"]
[EventDate "1975.10.18"]
[PlyCount "58"]

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 Nd7 10.d4 Bf6 11.a4 Na5 12.Bc2 Nb6 13.axb5 axb5 14.Nbd2 Bb7 15.dxe5 
dxe5 16.Qe2 Nac4 17.Rxa8 Qxa8 18.Nf1 Qd8 19.Ng3 g6 20.Bd3 c6 21.b3 Nd6 22.
Be3 Nd7 23.Rd1 Qe7 24.Bc2 Bc8 25.Qd2 Nb7 26.Nh2 Ndc5 27.Qc1 Rd8 28.Ng4 
Bxg4 29.hxg4 Rxd1+ 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "17"]
[White "Emma, Jaime"]
[Black "Stekel Grunberg, Moises"]
[Result "1/2-1/2"]
[WhiteElo "2405"]
[BlackElo "2350"]
[ECO "E90"]
[EventDate "1975.10.18"]
[PlyCount "93"]

1.Nf3 g6 2.c4 Bg7 3.Nc3 d6 4.d4 Nf6 5.e4 O-O 6.h3 e5 7.d5 Nh5 8.g3 a5 9.
Be2 Na6 10.Bg5 Qe8 11.Nd2 Nf6 12.g4 Bd7 13.Be3 Qc8 14.Nf1 c6 15.Rc1 Nc5 
16.Ng3 Qb8 17.g5 Ne8 18.Bg4 f5 19.gxf6 Nxf6 20.Bxd7 Ncxd7 21.h4 h5 22.f3 
Kh7 23.Rc2 cxd5 24.exd5 e4 25.Ncxe4 Nxe4 26.Nxe4 Ne5 27.O-O Kh8 28.Ng5 Bh6
29.Qd4 Bxg5 30.Bxg5 Kh7 31.f4 Ng4 32.Re2 Rf7 33.Re6 Qc7 34.Rfe1 Raf8 35.a4
Nh6 36.Bxh6 Kxh6 37.Qe4 Rf5 38.Re2 R8f6 39.Rg2 Qf7 40.Re7 Qg8 41.Rxb7 Rxf4
42.Qe3 Qc8 43.Qa7 Qh8 44.Rb8 Qg7 45.Rb7 Qh8 46.Rb8 Qg7 47.Rb7 1/2-1/2

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "17"]
[White "Gamarra Caceres, Carlos"]
[Black "Camara, Helder"]
[Result "1-0"]
[BlackElo "2340"]
[ECO "B77"]
[EventDate "1975.10.18"]
[PlyCount "39"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Bc4 O-O 8.f3 
Nc6 9.Qd2 Nd7 10.O-O-O Nde5 11.Bb3 Bd7 12.h4 Qa5 13.h5 Rfc8 14.hxg6 hxg6 
15.Bh6 Bh8 16.Bf8 Nd3+ 17.Kb1 Bxd4 18.Qh6 Be6 19.Nd5 Nf2 20.Rxd4 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "17"]
[White "Panno, Oscar"]
[Black "Segal, Alexandru Sorin"]
[Result "1-0"]
[WhiteElo "2545"]
[BlackElo "2385"]
[ECO "A30"]
[EventDate "1975.10.18"]
[PlyCount "81"]

1.c4 Nf6 2.Nc3 c5 3.Nf3 e6 4.g3 b6 5.Bg2 Bb7 6.O-O Be7 7.d4 cxd4 8.Qxd4 
Nc6 9.Qf4 O-O 10.e4 d6 11.Rd1 Qb8 12.b3 a6 13.Bb2 Ra7 14.Qe3 Ba8 15.Qe2 
Rd8 16.Ne1 Ne8 17.Nc2 Nc7 18.Ne3 b5 19.Rd2 Na5 20.cxb5 axb5 21.b4 Nc6 22.
a3 Ne5 23.Rad1 Bc6 24.h4 Be8 25.Kh2 Nd7 26.Nb1 f6 27.Rc2 Nb6 28.Bd4 Nca8 
29.Rdc1 Rc7 30.Bh3 Bd7 31.Rxc7 Nxc7 32.Qa2 Kf7 33.Nc3 Qb7 34.f4 Kf8 35.f5 
Na4 36.fxe6 Bc6 37.Qc2 Nxc3 38.Qxc3 Bxe4 39.Qxc7 Qa8 40.Qa7 Qxa7 41.Bxa7 
1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "17"]
[White "Quinteros, Miguel Angel"]
[Black "Trois, Francisco"]
[Result "0-1"]
[WhiteElo "2505"]
[BlackElo "2310"]
[ECO "E74"]
[EventDate "1975.10.18"]
[PlyCount "66"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 c5 7.d5 e6 8.Nf3 exd5 
9.exd5 Bg4 10.O-O a6 11.a4 Nbd7 12.h3 Bxf3 13.Bxf3 Qe7 14.Qc2 Rae8 15.Be2 
h6 16.Bd2 Nh7 17.Rae1 Qd8 18.f4 f5 19.Bf3 Rxe1 20.Rxe1 Re8 21.Re6 Ndf8 22.
Rxe8 Qxe8 23.a5 Bd4+ 24.Kh2 h5 25.Qd1 Nf6 26.Qe1 Qxe1 27.Bxe1 Be3 28.g3 h4
29.Na4 N8d7 30.b4 hxg3+ 31.Kxg3 Kf7 32.bxc5 Bxc5 33.Bc3 Be3 0-1

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "17"]
[White "Sanguineti, Raul"]
[Black "Silva Sanchez, Carlos"]
[Result "1-0"]
[WhiteElo "2530"]
[BlackElo "2355"]
[ECO "D20"]
[EventDate "1975.10.18"]
[PlyCount "63"]

1.d4 d5 2.c4 dxc4 3.e4 e5 4.Nf3 exd4 5.Qxd4 Qxd4 6.Nxd4 Bb4+ 7.Bd2 Bxd2+ 
8.Nxd2 Ne7 9.Bxc4 a6 10.Rc1 Nbc6 11.Nxc6 Nxc6 12.Bd5 Be6 13.Bxc6+ bxc6 14.
Ke2 O-O-O 15.Rxc6 Rd4 16.Rhc1 Rhd8 17.Rxc7+ Kb8 18.R7c2 f5 19.f3 a5 20.b3 
a4 21.bxa4 Rxa4 22.exf5 Bxf5 23.Rb2+ Ka8 24.Rc3 Be6 25.a3 g5 26.Ne4 Rc4 
27.Rxc4 Bxc4+ 28.Kf2 g4 29.fxg4 Rd4 30.Ng5 Bd5 31.h3 h6 32.Nf3 1-0

[Event "South American zonal"]
[Site "Fortaleza BRA"]
[Date "1975.??.??"]
[Round "17"]
[White "Szmetan, Jorge"]
[Black "Van Riemsdijk, Herman Claudius"]
[Result "1/2-1/2"]
[WhiteElo "2435"]
[BlackElo "2370"]
[ECO "A43"]
[EventDate "1975.10.18"]
[PlyCount "84"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Be2 O-O 6.O-O b6 7.Re1 Bb7 8.Bf1 c5 
9.d5 Na6 10.Bc4 Nc7 11.a4 e5 12.dxe6 fxe6 13.Bg5 d5 14.Ba2 dxe4 15.Nd2 Qd4
16.Bxf6 Qxf6 17.Ndxe4 Bxe4 18.Nxe4 Qxb2 19.Qd7 Qxc2 20.Bxe6+ Nxe6 21.Qxe6+
Kh8 22.Ra2 Rae8 23.Rxc2 Rxe6 24.f3 Rd8 25.Rb1 h6 26.Kf1 Rd4 27.a5 Rb4 28.
Rd1 Bd4 29.axb6 axb6 30.Ke2 g5 31.h3 Kg7 32.Ra2 Kg6 33.Ra8 Rb2+ 34.Rd2 
Rxd2+ 35.Kxd2 Rc6 36.Kd3 Kf5 37.Kc4 Kf4 38.Ra3 Rc8 39.Rb3 Rb8 40.Kb5 Ra8 
41.Kc4 Ra6 42.Kd5 h5 1/2-1/2

