[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.06"]
[Round "1"]
[White "Ciocaltea, Victor"]
[Black "Gheorghiu, Florin"]
[Result "1/2-1/2"]
[WhiteElo "2365"]
[BlackElo "2545"]
[ECO "C09"]
[EventDate "1977.02.06"]
[PlyCount "42"]

1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5 5.Ngf3 Nc6 6.Bb5 Bd6 7.dxc5 Bxc5 8.
O-O Ne7 9.Nb3 Bd6 10.Re1 O-O 11.Bg5 Qc7 12.h3 h6 13.Bd2 a6 14.Bd3 Re8 15.
Bc3 Bd7 16.Nbd4 Rad8 17.Qd2 Nxd4 18.Nxd4 Nc6 19.Rxe8+ Rxe8 20.Re1 Rxe1+ 
21.Qxe1 Bc5 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.06"]
[Round "1"]
[White "Piasetski, Leon David"]
[Black "Robatsch, Karl"]
[Result "1/2-1/2"]
[WhiteElo "2395"]
[BlackElo "2435"]
[ECO "A13"]
[EventDate "1977.02.06"]
[PlyCount "32"]

1.c4 Nf6 2.Nf3 e6 3.g3 a6 4.Bg2 b5 5.Nd4 c6 6.cxb5 axb5 7.Nxb5 cxb5 8.Bxa8
d5 9.b4 Qc7 10.Nc3 Bd7 11.Qb3 Qa7 12.Nxd5 exd5 13.Bxd5 Nxd5 14.Qxd5 Bxb4 
15.Bb2 O-O 16.Bxg7 Kxg7 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.06"]
[Round "1"]
[White "Tatai, Stefano"]
[Black "Pavlov, Mircea"]
[Result "1/2-1/2"]
[WhiteElo "2480"]
[BlackElo "2380"]
[ECO "B67"]
[EventDate "1977.02.06"]
[PlyCount "67"]

1.e4 c5 2.Nf3 d6 3.d4 Nf6 4.Nc3 cxd4 5.Nxd4 Nc6 6.Bg5 e6 7.Qd2 a6 8.O-O-O 
Bd7 9.f4 b5 10.Nxc6 Bxc6 11.Qe3 Be7 12.Bxf6 gxf6 13.f5 Qa5 14.Kb1 b4 15.
Ne2 e5 16.Nc1 Qc5 17.Qf3 a5 18.Nb3 Qb6 19.Bc4 a4 20.Nc1 Ra5 21.Rhe1 Rc5 
22.Bd5 Bxd5 23.Rxd5 Rxd5 24.exd5 Rg8 25.g3 Bf8 26.Nd3 Qd4 27.Nf2 a3 28.
bxa3 bxa3 29.Qxa3 Qxf2 30.Qa8+ Ke7 31.Qb7+ Ke8 32.Qc8+ Ke7 33.Qc7+ Ke8 34.
Qc8+ 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.06"]
[Round "1"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Hernandez Onna, Roman"]
[Result "1-0"]
[WhiteElo "2410"]
[BlackElo "2435"]
[ECO "B22"]
[EventDate "1977.02.06"]
[PlyCount "89"]

1.e4 c5 2.c3 Nc6 3.d4 cxd4 4.cxd4 d5 5.exd5 Qxd5 6.Nc3 Qxd4 7.Be3 Qxd1+ 8.
Rxd1 Bd7 9.Nb5 Rc8 10.Nxa7 Nxa7 11.Bxa7 e6 12.a3 Ba4 13.Rb1 Nf6 14.Ne2 Bb5
15.Rc1 Rxc1+ 16.Nxc1 Bxf1 17.Rxf1 Bd6 18.Nd3 Ke7 19.Kd2 Nd5 20.Bd4 Rd8 21.
g3 f6 22.f4 Rc8 23.Rc1 Rxc1 24.Kxc1 h5 25.Kd2 Kf7 26.Nc5 b6 27.Ne4 Bc7 28.
Nc3 g5 29.Nxd5 exd5 30.f5 g4 31.Ke2 b5 32.b3 Ke7 33.Bc5+ Kd7 34.Bd4 Ke7 
35.Kd3 h4 36.Bc5+ Kf7 37.gxh4 Bxh2 38.Ke2 Be5 39.a4 bxa4 40.bxa4 d4 41.a5 
g3 42.a6 g2 43.Kf2 d3 44.Bb4 Bf4 45.Kxg2 1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.06"]
[Round "1"]
[White "Ruiz Gutierrez, Manuel"]
[Black "Bellon Lopez, Juan Manuel"]
[Result "1/2-1/2"]
[WhiteElo "2260"]
[BlackElo "2415"]
[ECO "B27"]
[EventDate "1977.02.06"]
[PlyCount "91"]

1.e4 c5 2.Nf3 g6 3.c4 Bg7 4.Nc3 Nc6 5.Be2 d6 6.O-O a6 7.d3 Rb8 8.Bd2 b5 9.
Rb1 e6 10.b3 Nd4 11.a4 bxc4 12.bxc4 Bd7 13.Nxd4 cxd4 14.Na2 Ne7 15.Qc2 O-O
16.Rxb8 Qxb8 17.Rb1 Bxa4 18.Rxb8 Bxc2 19.Rxf8+ Bxf8 20.Nb4 Bb1 21.Nxa6 d5 
22.exd5 exd5 23.Nb4 dxc4 24.dxc4 Nf5 25.Bd3 Bxd3 26.Nxd3 Nd6 27.c5 Nb5 28.
Bf4 f6 29.c6 Kf7 30.c7 Na7 31.Kf1 Ke6 32.Ke2 Kd5 33.h3 g5 34.Bh2 f5 35.Be5
Nc8 36.g4 f4 37.Bf6 h6 38.h4 gxh4 39.Bxh4 Bd6 40.Bf6 Bxc7 41.Bg7 Kc4 42.f3
Ne7 43.Bxh6 Nd5 44.Bf8 Nc3+ 45.Kd2 Bd8 46.Bd6 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.06"]
[Round "1"]
[White "Christiansen, Larry Mark"]
[Black "Byrne, Robert"]
[Result "0-1"]
[WhiteElo "2460"]
[BlackElo "2580"]
[ECO "A00"]
[EventDate "1977.02.06"]
[PlyCount "58"]

1.g3 d5 2.Bg2 c6 3.d3 Bf5 4.Nd2 h6 5.e4 Bh7 6.Ne2 e6 7.b3 Nf6 8.Bb2 Bb4 9.
e5 Nfd7 10.O-O O-O 11.a3 Be7 12.Nf4 Na6 13.Nf3 Nc7 14.Qd2 a5 15.Rfe1 a4 
16.b4 c5 17.bxc5 Nxc5 18.Rab1 Nb5 19.Bc1 Qd7 20.Nh5 Rfe8 21.Rb4 Bf8 22.Rg4
Bg6 23.Nf6+ gxf6 24.exf6 Qd8 25.Qf4 Nd7 26.Rxe6 fxe6 27.Rxg6+ Kf7 28.Rg7+ 
Bxg7 29.fxg7+ Qf6 0-1

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.06"]
[Round "1"]
[White "Medina Garcia, Antonio Angel"]
[Black "Garcia Padron, Jose"]
[Result "1/2-1/2"]
[WhiteElo "2345"]
[BlackElo "2425"]
[ECO "B84"]
[EventDate "1977.02.06"]
[PlyCount "83"]

1.e4 e6 2.d4 c5 3.Nf3 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 a6 7.f4 Nbd7 8.O-O b5
9.Bf3 Bb7 10.e5 Bxf3 11.Nxf3 dxe5 12.fxe5 b4 13.exf6 bxc3 14.fxg7 Bxg7 15.
b3 O-O 16.Ba3 Re8 17.Qe1 Qb6+ 18.Kh1 Rad8 19.Qh4 h6 20.Rae1 e5 21.Qg3 Qg6 
22.Qf2 Nf8 23.Bxf8 Rxf8 24.Nxe5 Bxe5 25.Rxe5 Rd2 26.Qf3 Rxc2 27.Re4 h5 28.
Rc4 Rd8 29.Rxc3 Rxa2 30.Rc6 Qg7 31.h3 Ra1 32.Rcc1 Rxc1 33.Rxc1 h4 34.Rc4 
Qa1+ 35.Kh2 Qe5+ 36.Kh1 Qe1+ 37.Kh2 Qe5+ 38.Qf4 Qxf4+ 39.Rxf4 a5 40.Rxh4 
Rb8 41.Rg4+ Kf8 42.Rg3 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.07"]
[Round "2"]
[White "Gheorghiu, Florin"]
[Black "Robatsch, Karl"]
[Result "1/2-1/2"]
[WhiteElo "2545"]
[BlackElo "2435"]
[ECO "A17"]
[EventDate "1977.02.06"]
[PlyCount "27"]

1.c4 Nf6 2.Nc3 e6 3.Nf3 b6 4.e4 Bb7 5.Bd3 d5 6.cxd5 exd5 7.e5 Nfd7 8.Bc2 
d4 9.Be4 c6 10.e6 dxc3 11.exd7+ Nxd7 12.dxc3 Ne5 13.Qxd8+ Rxd8 14.Bc2 
1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.07"]
[Round "2"]
[White "Ciocaltea, Victor"]
[Black "Tatai, Stefano"]
[Result "0-1"]
[WhiteElo "2365"]
[BlackElo "2480"]
[ECO "C73"]
[EventDate "1977.02.06"]
[PlyCount "64"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.Bxc6+ bxc6 6.d4 f6 7.Nc3 Ne7 8.Be3 
Be6 9.Qd2 Qb8 10.dxe5 $5 fxe5 11.Ng5 Bg8 12.O-O-O h6 13.Nf3 $5 Ng6 $6 ( {
Era preferible} 13...Be6 ) 14.h4 Be7 15.h5 Nf8 16.Nh4 Qb4 $5 17.a3 Qb7 18.
Nf5 Rb8 19.b3 $5 Bf6 $5 20.f3 $2 ( {Mejor es} 20.Qe2 ) 20...Bxb3 $1 21.
cxb3 Qxb3 22.Qc2 Qxa3+ 23.Kd2 Rb2 24.Rb1 Rxc2+ 25.Kxc2 {Las negras ganan 
material} 25...Qa5 $2 ( 25...Nd7 $1 {gana rapido} ) 26.Rb8+ $2 ( 26.Rb2 $1
Ne6 27.Ra2 Nd4+ $1 28.Bxd4 Qb4 29.Rb1 Qc4 30.Ra4 Qf7 31.Rb8+ Kd7 32.Rxh8 
exd4 {igualdad} ) 26...Kd7 27.Rhb1 g6 $5 28.hxg6 Ne6 $1 29.R8b3 ( {O} 29.
Rxh8 Bxh8 30.Bxh6 Nd4+ ) 29...Nd4+ 30.Bxd4 exd4 31.Ne2 c5 32.Rb7 Qa2+ $1 {
Tatai gana una partida espectacular} ( 32...Qa2+ $1 33.R1b2 d3+ $1 {gana 
la torre de b2 (Byrne - Mednis).} ) 0-1

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.07"]
[Round "2"]
[White "Hernandez Onna, Roman"]
[Black "Piasetski, Leon David"]
[Result "0-1"]
[WhiteElo "2435"]
[BlackElo "2395"]
[ECO "E14"]
[EventDate "1977.02.06"]
[PlyCount "67"]

1.c4 b6 2.Nf3 Bb7 3.d4 e6 4.e3 Bb4+ 5.Nbd2 Nf6 6.Bd3 O-O 7.O-O d5 8.a3 Be7
9.b3 c5 10.Bb2 cxd4 11.exd4 Nc6 12.Rc1 dxc4 13.bxc4 Re8 14.Qe2 Rc8 15.Rfd1
Qd6 16.Ne4 Qf4 17.Nfg5 Nxe4 18.Nxe4 Red8 19.Bb1 Nxd4 20.Qe1 Nf5 21.Ng3 
Nxg3 22.hxg3 Qg4 23.Bd3 Qg5 24.Bf1 Bc5 25.Rxd8+ Rxd8 26.Rd1 Rxd1 27.Qxd1 
Bc6 28.Qd3 h6 29.Bd4 Qd8 30.Bxc5 Qxd3 31.Bxd3 bxc5 32.f3 Kf8 33.Kf2 Ke7 
34.Ke3 {a partir de aqui esta mal anotada, la partida acabo en la jugada 
41} 0-1

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.07"]
[Round "2"]
[White "Pavlov, Mircea"]
[Black "Ruiz Gutierrez, Manuel"]
[Result "1-0"]
[WhiteElo "2380"]
[BlackElo "2260"]
[ECO "C44"]
[EventDate "1977.02.06"]
[PlyCount "116"]

1.e4 e5 2.Nf3 Nc6 3.c3 d6 4.d4 Bd7 5.Bc4 Qe7 6.O-O g6 7.dxe5 dxe5 8.b4 Bg7
9.Be3 Nh6 10.Nbd2 b6 11.h3 O-O 12.Bd5 Rab8 13.Nc4 Kh8 14.a4 f6 15.b5 Nd8 
16.Bc1 Ne6 17.Ba3 Nc5 18.Nfd2 a6 19.Rb1 axb5 20.axb5 Nf7 21.Qe2 Nd6 22.
Nxd6 cxd6 23.Bxc5 dxc5 24.Ra1 f5 25.Ra6 Bh6 26.Nf3 fxe4 27.Bxe4 Rf4 28.c4 
Be6 29.Rfa1 Qg7 30.Ra7 Rf7 31.Rxf7 Qxf7 32.Ra4 Qf4 33.Ra1 Bg8 34.Re1 Bf8 
35.g3 Qf6 36.Bc6 Bg7 37.h4 Qf5 38.Be4 Qg4 39.Qc2 Rf8 40.Nh2 Qc8 41.Nf1 Bh6
42.Ne3 Bxe3 43.Rxe3 Rd8 44.Bd3 Qd7 45.Be2 Qd4 46.h5 Kg7 47.Qa4 e4 48.hxg6 
hxg6 49.Qc2 Be6 50.Qxe4 Qa1+ 51.Bf1 Rd1 52.Qxe6 Rxf1+ 53.Kg2 Rg1+ 54.Kf3 
Qd1+ 55.Kf4 Qd4+ 56.Kg5 Qd2 57.Qe7+ Kg8 58.Kxg6 Qxf2 1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.07"]
[Round "2"]
[White "Byrne, Robert"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "1/2-1/2"]
[WhiteElo "2580"]
[BlackElo "2410"]
[ECO "B00"]
[EventDate "1977.02.06"]
[PlyCount "34"]

1.e4 Nc6 2.Nf3 d6 3.d4 Nf6 4.c3 g6 5.Bb5 Bd7 6.Nbd2 e5 7.dxe5 Nxe5 8.Nxe5 
dxe5 9.Qb3 Bh6 10.Nf3 Bxc1 11.Rxc1 O-O 12.Bxd7 Qxd7 13.O-O Nxe4 14.Rcd1 
Qf5 15.Qxb7 Rab8 16.Qxa7 Rxb2 17.Qxc7 Rxa2 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.07"]
[Round "2"]
[White "Bellon Lopez, Juan Manuel"]
[Black "Medina Garcia, Antonio Angel"]
[Result "1-0"]
[WhiteElo "2415"]
[BlackElo "2345"]
[ECO "A48"]
[EventDate "1977.02.06"]
[PlyCount "25"]

1.d4 Nf6 2.Nf3 g6 3.Bg5 Bg7 4.Nbd2 c5 5.Bxf6 exf6 6.Ne4 cxd4 7.Nd6+ Ke7 8.
Qxd4 Nc6 9.Qd2 Qa5 10.c3 a6 11.Rd1 Qc7 12.Qf4 Rb8 13.Qe3+ 1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.07"]
[Round "2"]
[White "Garcia Padron, Jose"]
[Black "Christiansen, Larry Mark"]
[Result "0-1"]
[WhiteElo "2425"]
[BlackElo "2460"]
[ECO "A10"]
[EventDate "1977.02.06"]
[PlyCount "76"]

1.c4 g6 2.Nf3 Bg7 3.g3 c5 4.Bg2 Nc6 5.O-O Nh6 6.Nc3 d6 7.d3 O-O 8.Rb1 a6 
9.a3 Rb8 10.Bd2 b5 11.cxb5 axb5 12.b4 cxb4 13.axb4 d5 14.Qc1 Nf5 15.Nxb5 
Bd7 16.Na3 Ncd4 17.Nxd4 Nxd4 18.Re1 Rc8 19.Qd1 Ra8 20.Bc1 Ba4 21.Qd2 Qd6 
22.Qa2 e6 23.e3 Nb5 24.Nxb5 Bxb5 25.Qd2 Rfc8 26.d4 Bf8 27.e4 dxe4 28.Rxe4 
Ra4 29.Re5 Qa6 30.Rc5 Rd8 31.Qg5 Rxd4 32.Rxb5 Rd1+ 33.Bf1 f5 34.Qe3 Rxf1+ 
35.Kxf1 Qxb5+ 36.Kg1 Qd5 37.Bd2 Bg7 38.Qb3 $4 Ra1 0-1

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.08"]
[Round "3"]
[White "Tatai, Stefano"]
[Black "Gheorghiu, Florin"]
[Result "1/2-1/2"]
[WhiteElo "2480"]
[BlackElo "2545"]
[ECO "B57"]
[EventDate "1977.02.06"]
[PlyCount "31"]

1.e4 c5 2.Nf3 d6 3.d4 Nf6 4.Nc3 cxd4 5.Nxd4 Nc6 6.Bc4 Qb6 7.Nde2 e6 8.Bb3 
Be7 9.O-O O-O 10.Bg5 Ne5 11.Ng3 Qc7 12.Re1 a6 13.Nh5 Nxh5 14.Bxe7 Qxe7 15.
Qxh5 b5 16.Rad1 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.08"]
[Round "3"]
[White "Robatsch, Karl"]
[Black "Hernandez Onna, Roman"]
[Result "1/2-1/2"]
[WhiteElo "2435"]
[BlackElo "2435"]
[ECO "B39"]
[EventDate "1977.02.06"]
[PlyCount "63"]

1.c4 c5 2.Nf3 g6 3.d4 Bg7 4.e4 cxd4 5.Nxd4 Nc6 6.Be3 Nf6 7.Nc3 Ng4 8.Qxg4 
Nxd4 9.Qd1 Ne6 10.Qd2 d6 11.Bh6 Bxh6 12.Qxh6 Qb6 13.Rb1 Bd7 14.Be2 Qd4 15.
O-O Qg7 16.Qe3 O-O 17.Nd5 f5 18.exf5 gxf5 19.f4 Nd4 20.Nxe7+ Kh8 21.Bh5 
Rae8 22.Bxe8 Rxe8 23.Rbd1 Nc6 24.Rxd6 Rxe7 25.Qd2 Be6 26.b3 Bf7 27.Re1 Re4
28.Rxe4 fxe4 29.Rd7 Qa1+ 30.Kf2 Qf6 31.Qe3 Ne5 32.Rxf7 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.08"]
[Round "3"]
[White "Ruiz Gutierrez, Manuel"]
[Black "Ciocaltea, Victor"]
[Result "0-1"]
[WhiteElo "2260"]
[BlackElo "2365"]
[ECO "A42"]
[EventDate "1977.02.06"]
[PlyCount "70"]

1.d4 g6 2.c4 Bg7 3.Nc3 d6 4.Nf3 Nd7 5.e4 e5 6.Be2 c6 7.O-O Nh6 8.h3 O-O 9.
Re1 f6 10.Be3 Nf7 11.b4 f5 12.exf5 gxf5 13.d5 c5 14.bxc5 Nxc5 15.Rc1 b6 
16.Nh2 Bd7 17.f4 Qf6 18.Nf3 Rae8 19.Bf1 exf4 20.Bxf4 Ne4 21.Nb5 Bxb5 22.
cxb5 Ne5 23.Rc7 Rf7 24.Rxf7 Qxf7 25.Nd4 Ng6 26.Ne6 Nxf4 27.Nxf4 Be5 28.Ne6
Bg3 29.Re2 Nc3 30.Qd3 Nxe2+ 31.Bxe2 Be5 32.Qc4 Kh8 33.Bf3 Qg8 34.Qc7 Rc8 
35.Qd7 Rc1+ 0-1

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.08"]
[Round "3"]
[White "Piasetski, Leon David"]
[Black "Byrne, Robert"]
[Result "1/2-1/2"]
[WhiteElo "2395"]
[BlackElo "2580"]
[ECO "E18"]
[EventDate "1977.02.06"]
[PlyCount "28"]

1.c4 e6 2.Nf3 Nf6 3.g3 d5 4.Bg2 Be7 5.O-O O-O 6.d4 b6 7.Nc3 Bb7 8.Ne5 Na6 
9.Bg5 c5 10.dxc5 Nxc5 11.cxd5 Nxd5 12.Bxe7 Qxe7 13.Nxd5 exd5 14.Nf3 Ne6 
1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.08"]
[Round "3"]
[White "Medina Garcia, Antonio Angel"]
[Black "Pavlov, Mircea"]
[Result "1-0"]
[WhiteElo "2345"]
[BlackElo "2380"]
[ECO "B25"]
[EventDate "1977.02.06"]
[PlyCount "61"]

1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.f4 e5 7.Nh3 exf4 8.Bxf4 Nge7
9.Qd2 h6 10.O-O Be6 11.a3 Qd7 12.Nf2 g5 13.Be3 Be5 14.Rae1 Nd4 15.Nd5 Bxd5
16.exd5 Qa4 17.b3 Qd7 18.Qd1 Ndf5 19.Bxc5 Qc7 20.Bb4 h5 21.Ne4 O-O-O 22.
Nxg5 Qb6+ 23.Kh1 Ne3 24.Rxe3 Qxe3 25.Nxf7 h4 26.Nxh8 Rxh8 27.Qg4+ Kb8 28.
gxh4 Rg8 29.Qe6 Rxg2 30.Bxd6+ Bxd6 31.Qxd6+ 1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.08"]
[Round "3"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Garcia Padron, Jose"]
[Result "0-1"]
[WhiteElo "2410"]
[BlackElo "2425"]
[ECO "A01"]
[EventDate "1977.02.06"]
[PlyCount "74"]

1.b3 Nf6 2.Bb2 g6 3.e4 Bg7 4.g3 O-O 5.Bg2 d6 6.Ne2 c5 7.O-O Nc6 8.h3 Bd7 
9.Na3 Qc8 10.Kh2 Ng4+ 11.hxg4 Bxb2 12.Nc4 Bxa1 13.Qxa1 Bxg4 14.Nf4 Qd8 15.
f3 Bd7 16.Nd5 Nd4 17.c3 Ne6 18.Qe1 b5 19.Nce3 Ng7 20.g4 e6 21.Nf4 Qf6 22.
Qg3 Qe5 23.g5 f6 24.Ng4 Qxg5 25.Nh3 Qxd2 26.Rf2 Qxc3 27.Nh6+ Kh8 28.Qxd6 
Qd4 29.Qe7 e5 30.Re2 Be6 31.Nf2 Qd7 32.Qxc5 Nh5 33.Bh3 Nf4 34.Bxe6 Nxe6 
35.Qb4 Nd4 36.Re3 Nc2 37.Rd3 Qxd3 0-1

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.08"]
[Round "3"]
[White "Christiansen, Larry Mark"]
[Black "Bellon Lopez, Juan Manuel"]
[Result "1-0"]
[WhiteElo "2460"]
[BlackElo "2415"]
[ECO "A30"]
[EventDate "1977.02.06"]
[PlyCount "91"]

1.c4 Nf6 2.Nc3 c5 3.Nf3 e6 4.g3 b6 5.Bg2 Bb7 6.O-O Be7 7.Re1 d6 8.e4 e5 9.
d3 Nc6 10.Nd5 O-O 11.Bh3 Nxd5 12.cxd5 Nb8 13.Nd2 g6 14.Nc4 b5 15.Qb3 Ba6 
16.Na3 Qa5 17.Bh6 Rd8 18.Nc2 Nd7 19.Ne3 Rab8 20.Qd1 c4 21.Bxd7 Rxd7 22.d4 
Bc8 23.dxe5 dxe5 24.f4 f6 25.fxe5 fxe5 26.Rf1 Rd6 27.Kg2 Qb6 28.Ng4 Bxg4 
29.Qxg4 Qc7 30.Rf5 Qd7 31.Raf1 Rf6 32.h3 Rxf5 33.Rxf5 Qd6 34.Rf2 Bf8 35.
Bxf8 Rxf8 36.Rxf8+ Kxf8 37.Qc8+ Ke7 38.Qb7+ Qd7 39.Qb8 Kf6 40.Qf8+ Kg5 41.
g4 h5 42.Kg3 h4+ 43.Kf3 b4 44.d6 c3 45.bxc3 bxc3 46.Qe7+ 1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.09"]
[Round "4"]
[White "Gheorghiu, Florin"]
[Black "Hernandez Onna, Roman"]
[Result "1-0"]
[WhiteElo "2545"]
[BlackElo "2435"]
[ECO "E90"]
[EventDate "1977.02.06"]
[PlyCount "75"]

1.d4 Nf6 2.c4 c5 3.d5 g6 4.Nc3 Bg7 5.e4 d6 6.h3 O-O 7.Bd3 e6 8.Nf3 exd5 9.
exd5 Re8+ 10.Be3 Nh5 11.O-O f5 12.Bg5 Bf6 13.Qd2 Na6 $5 ( {La alternativa 
es} 13...Nd7 14.Bxf6 Nhxf6 ) 14.Rfe1 Nc7 15.a3 Bd7 16.b4 Rxe1+ 17.Rxe1 b6 
18.Rb1 Bxg5 19.Nxg5 {Las blancas controlan mas territorio} 19...h6 $6 {
Esta maniobra en el flanco de rey es prematura} ( {Mejor era} 19...Qf6 ) 
20.Nf3 g5 $2 ( 20...Kh7 {Protegiendo los peones} ) 21.h4 f4 $6 22.hxg5 
hxg5 23.Bg6 Bg4 24.Nh2 $5 Nf6 25.g3 Qd7 26.bxc5 bxc5 27.gxf4 Bf5 $5 28.
Bxf5 Qxf5 29.Rb7 $1 gxf4 30.Rxc7 $1 Kh8 31.f3 $1 Rg8+ 32.Kh1 Qg5 33.Qf2 
Nh5 34.Ng4 Ng3+ 35.Kg1 Re8 36.Qh2+ Nh5 37.Qb2 $1 Kg8 38.Ne4 {Gheorghiu 
conquista el flanco de rey} 1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.09"]
[Round "4"]
[White "Tatai, Stefano"]
[Black "Ruiz Gutierrez, Manuel"]
[Result "1/2-1/2"]
[WhiteElo "2480"]
[BlackElo "2260"]
[ECO "B91"]
[EventDate "1977.02.06"]
[PlyCount "33"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.g3 e5 7.Nde2 Qc7 8.a4 h6 
9.Bg2 Be7 10.O-O b6 11.h3 Bb7 12.Be3 Nbd7 13.Nd5 Nxd5 14.exd5 O-O 15.Qd2 
f5 16.f4 Rab8 17.Ra3 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.09"]
[Round "4"]
[White "Byrne, Robert"]
[Black "Robatsch, Karl"]
[Result "1/2-1/2"]
[WhiteElo "2580"]
[BlackElo "2435"]
[ECO "B60"]
[EventDate "1977.02.06"]
[PlyCount "20"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Bg5 Bd7 7.Bxf6 gxf6 8.
Nf5 Qb6 9.Rb1 Qc5 10.Qh5 Nb4 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.09"]
[Round "4"]
[White "Ciocaltea, Victor"]
[Black "Medina Garcia, Antonio Angel"]
[Result "1/2-1/2"]
[WhiteElo "2365"]
[BlackElo "2345"]
[ECO "C76"]
[EventDate "1977.02.06"]
[PlyCount "54"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 Bd7 6.d4 g6 7.O-O Bg7 8.dxe5 dxe5
9.Bg5 Nf6 10.Nbd2 h6 11.Be3 O-O 12.Re1 Re8 13.b4 b6 14.Qc2 Qe7 15.Nf1 a5 
16.a3 Nh5 17.Bb3 Nd8 18.g3 Nf6 19.Nh4 Be6 20.f3 Bxb3 21.Qxb3 Ne6 22.Red1 
Kh7 23.Ra2 axb4 24.axb4 Rxa2 25.Qxa2 Rd8 26.Qc2 Rxd1 27.Qxd1 b5 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.09"]
[Round "4"]
[White "Garcia Padron, Jose"]
[Black "Piasetski, Leon David"]
[Result "1-0"]
[WhiteElo "2425"]
[BlackElo "2395"]
[ECO "B08"]
[EventDate "1977.02.06"]
[PlyCount "59"]

1.Nf3 g6 2.e4 Bg7 3.d4 d6 4.Nc3 Nf6 5.Be2 O-O 6.O-O a6 7.Re1 b5 8.e5 Ng4 
9.h3 Nh6 10.Bg5 f6 11.exf6 exf6 12.Bf4 g5 13.Bh2 f5 14.Qd2 Nf7 15.a4 b4 
16.Nd5 c6 17.Bc4 cxd5 18.Bxd5 Kh8 19.Bxa8 g4 20.Qxb4 gxf3 21.Qxb8 fxg2 22.
Bd5 Ng5 23.f4 Nxh3+ 24.Kxg2 Qh4 25.Rf1 Be6 26.Qxd6 Bxd5+ 27.Qxd5 Rg8 28.
Bg3 Qh5 29.Qf3 Nxf4+ 30.Qxf4 1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.09"]
[Round "4"]
[White "Pavlov, Mircea"]
[Black "Christiansen, Larry Mark"]
[Result "1/2-1/2"]
[WhiteElo "2380"]
[BlackElo "2460"]
[ECO "B35"]
[EventDate "1977.02.06"]
[PlyCount "87"]

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.Re1 Rac8 12.Qe2 Qh5 13.Rad1 Qxe2 14.Rxe2 Na5 15.
Nd5 Rfe8 16.Bg5 Nxd5 17.exd5 Kf8 18.c3 Nxb3 19.axb3 Rc5 20.Nc2 Ra5 21.Be3 
h5 22.Bd4 Bh6 23.Be3 Bxe3 24.Nxe3 Ra2 25.b4 Rc8 26.Rc1 b6 27.h4 a5 28.bxa5
bxa5 29.f3 Rb8 30.Rcc2 Ba4 31.Rcd2 Bb3 32.Kf2 Rc8 33.Rd4 Rc5 34.g4 hxg4 
35.fxg4 Kg7 36.h5 Ra4 37.hxg6 fxg6 38.Red2 Ra1 39.Re4 Kf7 40.Kg3 Rg1+ 41.
Kf2 Rb1 42.Kg3 a4 43.c4 Re1 44.Kf4 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.09"]
[Round "4"]
[White "Bellon Lopez, Juan Manuel"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "1-0"]
[WhiteElo "2415"]
[BlackElo "2410"]
[ECO "C47"]
[EventDate "1977.02.06"]
[PlyCount "61"]

1.e4 Nc6 2.Nc3 e5 3.Nf3 Nf6 4.d4 exd4 5.Nd5 Bc5 6.Bg5 h6 7.Bxf6 gxf6 8.Qd2
d6 9.b4 Bb6 10.Bb5 Kf8 11.O-O f5 12.exf5 Ne5 13.Nxd4 Qh4 14.Nxb6 axb6 15.
f4 Ng4 16.Nf3 Qf6 17.h3 h5 18.hxg4 hxg4 19.Ng5 Ra3 20.Rae1 c6 21.Ne4 Qh4 
22.Qxd6+ Kg7 23.f6+ Kg6 24.f5+ Bxf5 25.Bd3 c5 26.bxc5 bxc5 27.Re3 Qh6 28.
Rg3 Qh2+ 29.Kf2 b6 30.Qf4 Qh4 31.Rh1 1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.10"]
[Round "5"]
[White "Ruiz Gutierrez, Manuel"]
[Black "Gheorghiu, Florin"]
[Result "0-1"]
[WhiteElo "2260"]
[BlackElo "2545"]
[ECO "A37"]
[EventDate "1977.02.06"]
[PlyCount "44"]

1.Nf3 c5 2.g3 g6 3.Bg2 Bg7 4.O-O Nc6 5.c4 e6 6.Nc3 Nge7 7.d3 O-O 8.Bd2 b6 
9.Rb1 Bb7 10.a3 d5 11.b4 cxb4 12.axb4 dxc4 13.dxc4 Rc8 14.Ne1 Qd7 15.Nd3 
Nd4 16.c5 Bxg2 17.Kxg2 Qb7+ 18.f3 Rfd8 19.Qe1 Nxe2 20.Qxe2 Qd7 21.Ne4 Qxd3
22.Rf2 Qxb1 0-1

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.10"]
[Round "5"]
[White "Hernandez Onna, Roman"]
[Black "Byrne, Robert"]
[Result "1/2-1/2"]
[WhiteElo "2435"]
[BlackElo "2580"]
[ECO "A18"]
[EventDate "1977.02.06"]
[PlyCount "47"]

1.c4 Nf6 2.Nc3 e6 3.e4 d5 4.e5 d4 5.exf6 dxc3 6.bxc3 Qxf6 7.d4 b6 8.Nf3 
Bb7 9.Be2 Bd6 10.Qa4+ Bc6 11.Qc2 h6 12.a4 Nd7 13.a5 O-O 14.O-O Rfd8 15.Be3
Nf8 16.Nd2 Ng6 17.Bf3 Bxf3 18.Nxf3 e5 19.axb6 axb6 20.Qe4 Rxa1 21.Rxa1 Qe6
22.Ra8 Rxa8 23.Qxa8+ Kh7 24.Qd5 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.10"]
[Round "5"]
[White "Medina Garcia, Antonio Angel"]
[Black "Tatai, Stefano"]
[Result "1-0"]
[WhiteElo "2345"]
[BlackElo "2480"]
[ECO "B91"]
[EventDate "1977.02.06"]
[PlyCount "79"]

1.e4 c5 2.Nf3 d6 3.d4 Nf6 4.Nc3 cxd4 5.Nxd4 a6 6.g3 g6 7.Bg2 Bg7 8.O-O O-O
9.h3 Bd7 10.a4 Nc6 11.Nde2 Rc8 12.Bg5 Re8 13.Nd5 Nxd5 14.exd5 Na5 15.Ra2 
h6 16.Be3 b6 17.b3 Qc7 18.Re1 Kh7 19.Bd4 Rg8 20.Bxg7 Rxg7 21.Nd4 f5 22.c4 
Rf8 23.Rae2 Rff7 24.h4 Nb7 25.Nc6 Bxc6 26.dxc6 Nd8 27.Bd5 Rf6 28.b4 e6 29.
Bg2 e5 30.b5 Ne6 31.Rd2 Nc5 32.Rd5 a5 33.Re2 Rg8 34.Red2 Rd8 35.Rxe5 Nxa4 
36.Re1 Nc5 37.Rde2 Rf7 38.Bd5 Rg7 39.Qd4 Kh8 40.Re7 1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.10"]
[Round "5"]
[White "Robatsch, Karl"]
[Black "Garcia Padron, Jose"]
[Result "1/2-1/2"]
[WhiteElo "2435"]
[BlackElo "2425"]
[ECO "A28"]
[EventDate "1977.02.06"]
[PlyCount "67"]

1.c4 Nf6 2.Nc3 e5 3.Nf3 Nc6 4.d4 e4 5.Nd2 Nxd4 6.Ndxe4 Nxe4 7.Nxe4 Bb4+ 8.
Bd2 Bxd2+ 9.Qxd2 Ne6 10.g3 O-O 11.Bg2 d6 12.Nc3 a5 13.O-O Nc5 14.Rad1 Bd7 
15.Rfe1 Bc6 16.e4 b6 17.Qc2 Qd7 18.Re3 Rae8 19.Rde1 f6 20.b3 Rf7 21.a3 Qc8
22.b4 axb4 23.axb4 Ne6 24.f4 Qa8 25.Qb2 Nf8 26.Qb3 g6 27.Nd5 Bxd5 28.cxd5 
Qc8 29.h4 Qd8 30.Qd1 Qd7 31.Kh2 Qe7 32.Qa1 g5 33.Bh3 Rg7 34.Rg1 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.10"]
[Round "5"]
[White "Christiansen, Larry Mark"]
[Black "Ciocaltea, Victor"]
[Result "1/2-1/2"]
[WhiteElo "2460"]
[BlackElo "2365"]
[ECO "B15"]
[EventDate "1977.02.06"]
[PlyCount "68"]

1.Nf3 g6 2.e4 Bg7 3.d4 c6 4.Nc3 d5 5.Bf4 Bg4 6.h3 Bxf3 7.Qxf3 dxe4 8.Nxe4 
Nf6 9.Nxf6+ Bxf6 10.O-O-O Qd5 11.Qb3 Qxb3 12.axb3 O-O 13.Be2 Rd8 14.c3 Nd7
15.d5 cxd5 16.Rxd5 e6 17.Rdd1 Nb6 18.Bf3 Nd5 19.Bxd5 exd5 20.Be3 Rac8 21.
Bd4 Rc6 22.Rhe1 Kf8 23.Kc2 Bxd4 24.Rxd4 Re6 25.Red1 Re2+ 26.R1d2 Rxd2+ 27.
Kxd2 Ke7 28.Kd3 Rd7 29.Ra4 b6 30.Ra1 Kd6 31.Re1 Re7 32.Rxe7 Kxe7 33.Kd4 
Kd6 34.b4 a6 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.10"]
[Round "5"]
[White "Piasetski, Leon David"]
[Black "Bellon Lopez, Juan Manuel"]
[Result "1-0"]
[WhiteElo "2395"]
[BlackElo "2415"]
[ECO "A34"]
[EventDate "1977.02.06"]
[PlyCount "71"]

1.c4 Nf6 2.Nc3 c5 3.Nf3 b6 4.e4 d6 5.d4 Bg4 6.d5 e6 7.h3 Bxf3 8.Qxf3 e5 9.
g4 Be7 10.g5 Nfd7 11.h4 Na6 12.Bd2 Nc7 13.Qg3 a6 14.a4 O-O 15.Bh3 b5 16.a5
Re8 17.b3 Rb8 18.Nd1 Nf8 19.h5 bxc4 20.bxc4 Rb7 21.Ra3 Rb4 22.Rc3 Na8 23.
O-O Qxa5 24.f4 Rxc4 25.fxe5 Rxc3 26.Bxc3 Qc7 27.Qf4 Bxg5 28.Qxg5 dxe5 29.
h6 Ng6 30.hxg7 Nf4 31.Kh2 Qd6 32.Ne3 Qg6 33.Qxg6 hxg6 34.Ng4 Nh5 35.Bxe5 
f6 36.Nxf6+ 1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.10"]
[Round "5"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Pavlov, Mircea"]
[Result "1-0"]
[WhiteElo "2410"]
[BlackElo "2380"]
[ECO "B70"]
[EventDate "1977.02.06"]
[PlyCount "82"]

1.e4 c5 2.Nf3 d6 3.d4 Nf6 4.Bb5+ Bd7 5.Bxd7+ Qxd7 6.Nc3 cxd4 7.Nxd4 g6 8.
Nd5 Bg7 9.Bg5 Nc6 10.Nxf6+ exf6 11.Be3 O-O 12.O-O Rfe8 13.Nb5 Ne5 14.Qd5 
Rec8 15.Nxd6 Rxc2 16.Rab1 f5 17.Rfd1 fxe4 18.Qxe4 Qc6 19.Qh4 f6 20.Qh3 f5 
21.Bd4 Rf8 22.Qb3+ Nf7 23.Nb5 Qc4 24.Bxg7 Qxb3 25.axb3 Kxg7 26.Nd4 Rfc8 
27.Nxc2 Rxc2 28.Rd7 Kf6 29.Rxb7 Ne5 30.Rxh7 Nd3 31.Rxa7 Nxf2 32.h3 Nd3 33.
Ra4 g5 34.Rc4 Re2 35.b4 Nf4 36.Kf1 Rd2 37.Rc6+ Ke5 38.Rc5+ Kf6 39.Ra1 Kg6 
40.g4 fxg4 41.hxg4 Rd6 1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.11"]
[Round "6"]
[White "Gheorghiu, Florin"]
[Black "Byrne, Robert"]
[Result "1/2-1/2"]
[WhiteElo "2545"]
[BlackElo "2580"]
[ECO "E54"]
[EventDate "1977.02.06"]
[PlyCount "40"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 c5 6.Nf3 d5 7.O-O dxc4 8.Bxc4 
cxd4 9.exd4 a6 10.Bg5 b5 11.Bd3 Bb7 12.a4 bxa4 13.Rxa4 Be7 14.Qe2 Bc6 15.
Raa1 a5 16.Rfd1 Nbd7 17.Bc4 Nb6 18.Ne5 Bb7 19.Bb3 Nfd5 20.Bxe7 Qxe7 
1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.11"]
[Round "6"]
[White "Ruiz Gutierrez, Manuel"]
[Black "Medina Garcia, Antonio Angel"]
[Result "1/2-1/2"]
[WhiteElo "2260"]
[BlackElo "2345"]
[ECO "E74"]
[EventDate "1977.02.06"]
[PlyCount "56"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 c5 7.d5 Qa5 8.f3 a6 9.
Qd2 e6 10.Bh6 Bxh6 11.Qxh6 exd5 12.cxd5 b5 13.h4 Ra7 14.Nh3 Bxh3 15.Rxh3 
Nbd7 16.h5 c4 17.Kf1 b4 18.Nd1 Rc7 19.Ne3 Ne5 20.f4 Nd3 21.Nf5 Ne8 22.
Qxh7+ Kxh7 23.hxg6+ Kg8 24.g7 Nxg7 25.Nh6+ Kh7 26.Ng4+ Nh5 27.Rxh5+ Kg7 
28.Rg5+ Kh8 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.11"]
[Round "6"]
[White "Garcia Padron, Jose"]
[Black "Hernandez Onna, Roman"]
[Result "1-0"]
[WhiteElo "2425"]
[BlackElo "2435"]
[ECO "B85"]
[EventDate "1977.02.06"]
[PlyCount "115"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e6 5.Be2 Qc7 6.Nc3 a6 7.f4 d6 8.Be3 Nf6
9.O-O Be7 10.Qe1 O-O 11.Qg3 Nxd4 12.Bxd4 b5 13.a3 Bb7 14.Bd3 Rae8 15.Kh1 
e5 16.fxe5 Nh5 17.Qe3 dxe5 18.Bb6 Qb8 19.a4 b4 20.Ne2 Bd6 21.a5 Nf4 22.Bc4
Kh8 23.Ng3 f5 24.Rf2 Rc8 25.b3 Qa8 26.Re1 Be7 27.Qc1 fxe4 28.Qe3 Bg5 29.
Ref1 Nh3 30.Rxf8+ Rxf8 31.Rxf8+ Qxf8 32.Qe1 e3 33.Bxe3 Qf6 34.Qf1 Qxf1+ 
35.Nxf1 Nf4 36.Kg1 Bd8 37.Bb6 Be7 38.Ne3 g6 39.Bc7 Bf6 40.Bd6 Kg7 41.Bxb4 
e4 42.Bc5 Bc3 43.Bb6 Kf6 44.g3 Ne6 45.Bd5 Bc8 46.Bxe4 Ke5 47.Bg2 Nd4 48.
Bc7+ Ke6 49.Bh3+ Nf5 50.Nxf5 gxf5 51.Kg2 Kd5 52.Bb6 Bd7 53.Kf2 f4 54.Bf1 
fxg3+ 55.hxg3 Bf5 56.Bxa6 Bxc2 57.Bb5 Bxb3 58.a6 1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.11"]
[Round "6"]
[White "Tatai, Stefano"]
[Black "Christiansen, Larry Mark"]
[Result "0-1"]
[WhiteElo "2480"]
[BlackElo "2460"]
[ECO "B08"]
[EventDate "1977.02.06"]
[PlyCount "74"]

1.e4 g6 2.d4 Bg7 3.Nf3 d6 4.Be2 Nf6 5.Nc3 O-O 6.O-O Bg4 7.Bg5 Nc6 8.Qd2 h6
9.Be3 Kh7 10.h3 $5 ( 10.Rfd1 {fue jugado en Tatai - Sharif, Nice 1974.} ) 
10...Bxf3 11.Bxf3 e5 12.d5 Ne7 13.Be2 $5 Nd7 14.g4 $5 Ng8 15.Kg2 Bf6 16.
Bb5 Nb6 17.a4 a5 18.Ne2 Bg5 19.Ng3 Kg7 20.b4 $5 axb4 21.a5 Bxe3 22.fxe3 
Nd7 23.Qxb4 $2 ( 23.Bxd7 {(Byrne - Mednis)} 23...Qxd7 24.Qxb4 {fuerza un 
intercambio necesario} ) 23...Nc5 $1 24.Rf3 Nf6 25.Raf1 $2 Nh7 $1 26.Bd3 
Qh4 27.Ne2 Ng5 $1 28.Rg3 b6 $1 29.axb6 Rab8 $6 ( {Era preferible} 29...
Rfb8 $1 ) 30.Ng1 Rxb6 31.Qc4 Ra6 32.Nf3 Nxf3 33.Rgxf3 h5 34.gxh5 Qxh5 35.
Rg3 Ra4 36.Qc3 Rxe4 $1 37.Bxe4 Qe2+ $1 ( 37...Qe2+ 38.Rf2 Qxf2+ 39.Kxf2 
Nxe4+ {gana un caballo} ) 0-1

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.11"]
[Round "6"]
[White "Bellon Lopez, Juan Manuel"]
[Black "Robatsch, Karl"]
[Result "1/2-1/2"]
[WhiteElo "2415"]
[BlackElo "2435"]
[ECO "B89"]
[EventDate "1977.02.06"]
[PlyCount "43"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Bc4 e6 7.Be3 a6 8.Bb3 
Be7 9.Qe2 Qc7 10.O-O-O Na5 11.g4 b5 12.g5 Nxb3+ 13.axb3 Nd7 14.f4 b4 15.
Nd5 exd5 16.exd5 Nb6 17.f5 Nxd5 18.f6 O-O 19.Qf3 Nxe3 20.Qxe3 Bd8 21.Rhf1 
Bd7 22.Rf4 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.11"]
[Round "6"]
[White "Ciocaltea, Victor"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "1/2-1/2"]
[WhiteElo "2365"]
[BlackElo "2410"]
[ECO "B00"]
[EventDate "1977.02.06"]
[PlyCount "100"]

1.e4 Nc6 2.Nf3 d6 3.d4 Bg4 4.Nc3 Nf6 5.Be3 e6 6.h3 Bh5 7.d5 exd5 8.exd5 
Ne5 9.g4 Nxf3+ 10.Qxf3 Bg6 11.Bb5+ Nd7 12.Qe2 a6 13.Ba4 Qe7 14.O-O-O O-O-O
15.f4 f6 16.Rhe1 Be8 17.Qc4 Qf7 18.Bxd7+ Qxd7 19.Qd4 c5 20.dxc6 bxc6 21.
Qb6 Qb7 22.Qa5 Be7 23.Bb6 Rd7 24.Re4 d5 25.Re3 d4 26.Rxd4 Rxd4 27.Bxd4 Bb4
28.Qa4 Bf7 29.Ne4 Re8 30.c3 Bf8 31.c4 Rd8 32.Rb3 Rxd4 33.Rxb7 Kxb7 34.Nd2 
Bd6 35.Qb3+ Kc7 36.Qe3 c5 37.Ne4 Rxc4+ 38.Kd1 Rd4+ 39.Ke1 Bf8 40.Nc3 Bd6 
41.Ne4 Bf8 42.Nc3 Bd6 43.Qf3 Bxf4 44.Qa8 Bg3+ 45.Kf1 Bc4+ 46.Kg2 Be5 47.
Qa7+ Kc6 48.b3 Rd2+ 49.Kf3 Rd3+ 50.Kg2 Rd2+ 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.11"]
[Round "6"]
[White "Pavlov, Mircea"]
[Black "Piasetski, Leon David"]
[Result "1/2-1/2"]
[WhiteElo "2380"]
[BlackElo "2395"]
[ECO "C16"]
[EventDate "1977.02.06"]
[PlyCount "35"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 Qd7 5.Nf3 b6 6.Bd2 Bb7 7.Bd3 Nc6 8.O-O Bf8 
9.a3 Na5 10.Ne2 Ne7 11.b3 Nec6 12.Re1 O-O-O 13.Nf4 Kb8 14.Bc3 Be7 15.Nh5 
Rhg8 16.Nf4 Rh8 17.Nh5 Rhg8 18.Nf4 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.12"]
[Round "7"]
[White "Medina Garcia, Antonio Angel"]
[Black "Gheorghiu, Florin"]
[Result "0-1"]
[WhiteElo "2345"]
[BlackElo "2545"]
[ECO "B80"]
[EventDate "1977.02.06"]
[PlyCount "74"]

1.e4 c5 2.Nf3 d6 3.d4 Nf6 4.Nc3 cxd4 5.Nxd4 a6 6.g3 e6 7.Bg2 Be7 8.O-O Qc7
9.Re1 O-O 10.a4 Nc6 11.Nb3 b6 12.f4 Rb8 13.Be3 Na5 14.Nd4 Bb7 15.g4 Nc4 
16.Bc1 Qc5 17.g5 e5 18.gxf6 Bxf6 19.Ne2 exd4 20.Kh1 Ne3 21.Bxe3 dxe3 22.c3
Bh4 23.Ng3 f5 24.exf5 Bxg3 25.hxg3 Bxg2+ 26.Kxg2 Rxf5 27.Qf3 Re8 28.Rad1 
Rf6 29.Rd5 Qc4 30.Rd4 Qb3 31.Qd5+ Qxd5+ 32.Rxd5 Re4 33.Rd4 Rxd4 34.cxd4 g5
35.Kf3 gxf4 36.gxf4 Re6 37.Re2 Kf7 $138 {se cayo la bandera del blanco} 
0-1

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.12"]
[Round "7"]
[White "Byrne, Robert"]
[Black "Garcia Padron, Jose"]
[Result "1-0"]
[WhiteElo "2580"]
[BlackElo "2425"]
[ECO "B36"]
[EventDate "1977.02.06"]
[PlyCount "61"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Nf6 6.Nc3 Nxd4 7.Qxd4 d6 8.Bg5 
Bg7 9.f3 O-O 10.Qd2 Be6 11.Rc1 Qa5 12.b3 a6 $6 ( 12...Rfc8 13.Be2 a6 {
Jugado en Karpov - Kavalek, Nice 1974.} ) 13.Nd5 $1 Qxd2+ 14.Kxd2 Bxd5 15.
cxd5 Rfc8 $6 ( 15...e6 $1 16.dxe6 fxe6 17.g3 d5 18.Bh3 dxe4 19.Bxe6+ Kh8 {
dominando el centro} ) 16.Rxc8+ Rxc8 17.g3 $1 {Las blancasa adquieren 
ventaja posicional} 17...Kf8 $2 ( 17...e6 18.Bh3 Re8 19.dxe6 fxe6 {
Defiende bien (Byrne - Mednis).} ) 18.Bh3 $1 Rc7 19.Rc1 $1 Rxc1 20.Kxc1 
Ke8 21.Bc8 $1 b6 22.Bxa6 {Ganando un peon} 22...Kd8 23.Bb5 h6 24.Be3 Kc7 
25.Kc2 e6 26.Bc6 g5 27.Kd3 Ng8 28.Kc4 Ne7 29.Kb5 Nc8 30.Ka6 Bc3 31.Bb7 {
Byrne gana otro peon} 1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.12"]
[Round "7"]
[White "Christiansen, Larry Mark"]
[Black "Ruiz Gutierrez, Manuel"]
[Result "1/2-1/2"]
[WhiteElo "2460"]
[BlackElo "2260"]
[ECO "B10"]
[EventDate "1977.02.06"]
[PlyCount "125"]

1.e4 c6 2.d3 d5 3.Nd2 e5 4.Ngf3 Qc7 5.g3 Nf6 6.Bg2 Be7 7.O-O dxe4 8.dxe4 
O-O 9.b3 Re8 10.Bb2 Bf8 11.a4 a5 12.Re1 Nbd7 13.Nc4 h6 14.Qd2 Bb4 15.c3 
Bf8 16.b4 b6 17.Bf1 c5 18.b5 Bb7 19.Qc2 Nh7 20.Rad1 Ndf6 21.Bc1 g5 22.Bg2 
Nh5 23.h4 f6 24.Ne3 Rad8 25.Nf5 Bc8 26.Bh3 c4 27.Qe2 Bxf5 28.Bxf5 Ng7 29.
Bg6 Rxd1 30.Rxd1 Rc8 31.Kg2 Be7 32.Bxh7+ Kxh7 33.hxg5 hxg5 34.Nh2 Kg6 35.
Ng4 Rh8 36.Qf3 Qc8 37.Ba3 Qe6 38.Bxe7 Qxe7 39.Ne3 Qe6 40.Qg4 Qxg4 41.Nxg4 
Re8 42.Ne3 Ne6 43.Nxc4 Rc8 44.Nxb6 Rxc3 45.Nd5 Rc4 46.b6 Nc5 47.Ne7+ Kf7 
48.Nc6 Na6 49.Nxa5 Rxa4 50.Nb7 Rb4 51.Nd8+ Ke8 52.Rd6 Nc5 53.Nc6 Rxb6 54.
Rxf6 Nxe4 55.Re6+ Kd7 56.Rxe5 Nxf2 57.Kxf2 Rxc6 58.Rxg5 Ke7 59.Kf3 Kf7 60.
Ra5 Kg7 61.Kg4 Rb6 62.Kh4 Rc6 63.g4 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.12"]
[Round "7"]
[White "Hernandez Onna, Roman"]
[Black "Bellon Lopez, Juan Manuel"]
[Result "1/2-1/2"]
[WhiteElo "2435"]
[BlackElo "2415"]
[ECO "A22"]
[EventDate "1977.02.06"]
[PlyCount "116"]

1.c4 Nf6 2.Nc3 e5 3.g3 Bb4 4.Bg2 O-O 5.Nf3 Re8 6.O-O c6 7.a3 Bf8 8.d3 Na6 
9.b4 Nc7 10.Bb2 a5 11.Qb3 Ne6 12.e4 d6 13.Rfd1 Ng4 14.h3 Nh6 15.d4 axb4 
16.axb4 Rxa1 17.Bxa1 exd4 18.Nxd4 Nxd4 19.Rxd4 Be6 20.b5 Qg5 21.Rd1 Qc5 
22.Bf1 Ra8 23.Bb2 Be7 24.bxc6 bxc6 25.Qb7 Re8 26.e5 dxe5 27.Ne4 Qb4 28.
Qxc6 Rc8 29.Qb5 f6 30.Qa6 Bf5 31.g4 Bxe4 32.Qxc8+ Kf7 33.Bc1 Qb3 34.Re1 
Bb7 35.Re3 Qxe3 36.Qxb7 Qxc1 37.Qd5+ Kg6 38.Qe4+ Kg5 39.Qxh7 Bf8 40.Kg2 f5
41.Bd3 e4 42.Bxe4 fxe4 43.Qxe4 Qd2 44.c5 Qc3 ( 44...Kf6 45.Qf3+ Ke7 46.
Qe4+ Kd7 ) 45.Qd5+ Kg6 46.c6 Kh7 47.g5 Nf7 48.Qxf7 Qxc6+ 49.Kg3 Bd6+ 50.f4
Bb4 51.Qh5+ Kg8 52.Qe2 g6 53.h4 Qc3+ 54.Kg4 Qc8+ 55.Kg3 Qc3+ 56.Kg4 Kf7 
57.Qa2+ Kg7 58.Qa7+ Kf8 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.12"]
[Round "7"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Tatai, Stefano"]
[Result "1/2-1/2"]
[WhiteElo "2410"]
[BlackElo "2480"]
[ECO "A81"]
[EventDate "1977.02.06"]
[PlyCount "85"]

1.Nf3 f5 2.g3 Nf6 3.Bg2 g6 4.d4 Bg7 5.Nc3 O-O 6.Bf4 c6 7.Qd2 b5 8.a3 Qb6 
9.Bh6 Ne4 10.Qf4 e5 11.Nxe5 Bxh6 12.Qxh6 Qxd4 13.Bxe4 fxe4 14.f4 exf3 15.
Nxf3 Qg7 16.Qh4 d5 17.O-O Na6 18.e4 d4 19.Ne2 c5 20.Ng5 Bd7 21.e5 Bf5 22.
g4 h6 23.gxf5 gxf5 24.Ng3 Qxg5 25.Qxg5+ hxg5 26.Nxf5 Rae8 27.Rae1 Nc7 28.
h4 gxh4 29.Re4 Nd5 30.Rf3 Ne3 31.Nxh4 Rxf3 32.Nxf3 Kf7 33.c3 Rg8+ 34.Kh1 
dxc3 35.Rxe3 cxb2 36.Rb3 Rg3 37.Rxb2 Rxf3 38.Rxb5 Rc3 39.Ra5 Ke6 40.Rxa7 
Rc2 41.Kg1 Kxe5 42.Rd7 Ra2 43.Kf1 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.12"]
[Round "7"]
[White "Robatsch, Karl"]
[Black "Pavlov, Mircea"]
[Result "1-0"]
[WhiteElo "2435"]
[BlackElo "2380"]
[ECO "A34"]
[EventDate "1977.02.06"]
[PlyCount "99"]

1.c4 Nf6 2.Nc3 c5 3.Nf3 d5 4.cxd5 Nxd5 5.g3 Nc6 6.Bg2 g6 7.Qb3 Nc7 8.Ng5 
e6 9.Bxc6+ bxc6 10.d3 f6 11.Nge4 Be7 12.Be3 Na6 13.Na4 Qa5+ 14.Bd2 Qb5 15.
Rc1 Qxb3 16.axb3 Rb8 17.Nexc5 Nxc5 18.Nxc5 Rb5 19.Be3 Bxc5 20.Bxc5 Rxb3 
21.Bxa7 Rxb2 22.Bd4 Ra2 23.Bxf6 Rf8 24.Be5 Ba6 25.f4 Bb5 26.Ra1 Rxa1+ 27.
Bxa1 Kd7 28.Be5 Ra8 29.Kf2 Ra4 30.Rb1 Ke7 31.Kf3 Kf7 32.g4 Ra2 33.h4 Ra7 
34.Ke3 Ra4 35.Bd4 Ra2 36.Rh1 Ba4 37.h5 Bb5 38.g5 Ba4 39.hxg6+ hxg6 40.Rh7+
Kf8 41.Bc3 Rc2 42.Be5 c5 43.Rg7 Be8 44.Rc7 Ba4 45.Bd6+ Kg8 46.Rc8+ Kf7 47.
Rf8+ Kg7 48.Rf6 Ra2 49.Rxe6 Bd1 50.Kf2 1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.12"]
[Round "7"]
[White "Piasetski, Leon David"]
[Black "Ciocaltea, Victor"]
[Result "0-1"]
[WhiteElo "2395"]
[BlackElo "2365"]
[ECO "A49"]
[EventDate "1977.02.06"]
[PlyCount "80"]

1.Nf3 Nf6 2.d4 g6 3.b3 Bg7 4.Bb2 O-O 5.g3 d6 6.Bg2 c6 7.O-O a5 8.a4 Na6 9.
Nbd2 Nb4 10.e4 Nd7 11.Re1 Nb6 12.Re2 c5 13.Qb1 cxd4 14.Bxd4 f6 15.Qb2 Nc6 
16.Bc3 e5 17.Rd1 Be6 18.Nf1 Qc7 19.Ne3 Rfd8 20.Nd5 Bxd5 21.exd5 Ne7 22.Bh3
f5 23.Ng5 Nexd5 24.Bd2 e4 25.Qc1 Re8 26.c4 Nb4 27.Bxb4 axb4 28.Qd2 h6 29.
Qxd6 Qxd6 30.Rxd6 Nc8 31.Re6 Rf8 32.Rxg6 hxg5 33.Rxg5 Ne7 34.Rd2 Rad8 35.
Rxd8 Rxd8 36.Bxf5 Nxf5 37.Rxf5 Rd3 38.Rb5 Rxb3 39.Rxb7 Rb2 40.a5 Bd4 0-1

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.13"]
[Round "8"]
[White "Gheorghiu, Florin"]
[Black "Garcia Padron, Jose"]
[Result "1/2-1/2"]
[WhiteElo "2545"]
[BlackElo "2425"]
[ECO "D36"]
[EventDate "1977.02.06"]
[PlyCount "36"]

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 Be7 6.e3 O-O 7.Bd3 c6 8.Qc2 
Nbd7 9.Nf3 Re8 10.O-O h6 11.Bh4 Ne4 12.Bxe4 Bxh4 13.Bh7+ Kh8 14.Bd3 Be7 
15.Rab1 a5 16.a3 Bd6 17.b4 axb4 18.axb4 Nf6 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.13"]
[Round "8"]
[White "Medina Garcia, Antonio Angel"]
[Black "Christiansen, Larry Mark"]
[Result "0-1"]
[WhiteElo "2345"]
[BlackElo "2460"]
[ECO "B26"]
[EventDate "1977.02.06"]
[PlyCount "78"]

1.e4 g6 2.Nc3 Bg7 3.g3 d6 4.Bg2 c5 5.d3 Nc6 6.Be3 e5 7.Qd2 Be6 8.Nge2 Nd4 
9.f4 Ne7 10.O-O Qd7 11.Rf2 O-O 12.Raf1 f5 13.Kh1 Rfc8 14.b3 b5 15.fxe5 
dxe5 16.Bg5 Kh8 17.Ng1 Ng8 18.Nf3 b4 19.exf5 gxf5 20.Nd1 Ne7 21.Bh6 Ng6 
22.Bxg7+ Kxg7 23.Ne3 Re8 24.Ng5 f4 25.Nc4 Bxc4 26.bxc4 Qg4 27.gxf4 exf4 
28.Nf3 Nf5 29.Re1 Re3 30.Ng1 Rae8 31.Be4 Rxe1 32.Qxe1 Ne3 33.Qa1+ Kh6 34.
Qf6 Re6 35.Qf7 Qh4 36.Rf3 Ng4 37.Rh3 Nf2+ 38.Kg2 Nxh3 39.Qxe6 f3+ $138 {
aqui se cayo la bandera blanca} 0-1

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.13"]
[Round "8"]
[White "Bellon Lopez, Juan Manuel"]
[Black "Byrne, Robert"]
[Result "0-1"]
[WhiteElo "2415"]
[BlackElo "2580"]
[ECO "A00"]
[EventDate "1977.02.06"]
[PlyCount "44"]

1.g3 g6 2.Bg2 Bg7 3.d4 d5 4.c3 Nf6 5.Nh3 c6 6.O-O O-O 7.f3 Qb6 8.Nf2 Nbd7 
9.Qb3 e5 10.Qxb6 axb6 11.e4 b5 12.exd5 Nxd5 13.dxe5 Nxe5 14.f4 Nc4 15.Re1 
Bf5 16.Ne4 Rfd8 17.Bf1 Na5 18.Nbd2 b4 19.a4 bxc3 20.bxc3 Nxc3 21.Ra3 Re8 
22.Bg2 Bxe4 0-1

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.13"]
[Round "8"]
[White "Ruiz Gutierrez, Manuel"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "0-1"]
[WhiteElo "2260"]
[BlackElo "2410"]
[ECO "D07"]
[EventDate "1977.02.06"]
[PlyCount "88"]

1.d4 d5 2.Nf3 Bg4 3.e3 Nc6 4.c4 Nf6 5.Nc3 Qd7 6.cxd5 Nxd5 7.Be2 e6 8.O-O 
Bd6 9.Bd2 O-O 10.Rc1 Nf6 11.h3 Bh5 12.Ng5 Bg6 13.f4 Rfd8 14.Be1 Nb4 15.a3 
Nbd5 16.Bf2 Rac8 17.Nf3 Nxc3 18.bxc3 Ne4 19.Qb3 c5 20.Bh4 Be7 21.Ne5 Qc7 
22.Bxe7 Qxe7 23.Nxg6 hxg6 24.Qb2 Ng3 25.Rfe1 Nxe2+ 26.Rxe2 cxd4 27.cxd4 g5
28.Rxc8 Rxc8 29.fxg5 Qc7 30.Kf2 b6 31.Qb5 Rd8 32.Qd3 Rc8 33.h4 g6 34.Qe4 
b5 35.Rb2 a6 36.Qd3 Qc1 37.Qb1 Qc3 38.Qa2 Qd3 39.Rd2 Qe4 40.d5 Rc3 41.Re2 
exd5 42.Qb2 Qxh4+ 43.g3 Qh2+ 44.Kf3 Qh1+ 0-1

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.13"]
[Round "8"]
[White "Pavlov, Mircea"]
[Black "Hernandez Onna, Roman"]
[Result "0-1"]
[WhiteElo "2380"]
[BlackElo "2435"]
[ECO "B76"]
[EventDate "1977.02.06"]
[PlyCount "114"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Be3 Nf6 7.Bc4 O-O 8.Bb3 
a5 9.f3 d6 10.h4 Bd7 11.a4 Qb8 12.h5 Nxh5 13.g4 Nf6 14.Qd2 Ne5 15.Bh6 Bh8 
16.Bxf8 Qxf8 17.O-O-O Rc8 18.Qh2 e6 19.Qe2 h5 20.gxh5 Nxh5 21.Rdg1 Qh6+ 
22.Kb1 Bg7 23.Qf2 Nc4 24.Bxc4 Rxc4 25.Nde2 Bxa4 26.Rd1 Bc6 27.Rxd6 a4 28.
Rd8+ Kh7 29.Rd3 Qg5 30.Ng3 a3 31.Nxh5 gxh5 32.f4 Qa5 33.Qe2 Qb6 34.Nd1 
Bxe4 35.Rxh5+ Kg8 36.Rg5 Bxd3 37.cxd3 Rc1+ 38.Kxc1 a2 39.Qe5 a1=Q+ 40.Kd2 
Qb4+ 41.Ke2 Qf8 42.Ne3 Qa2 43.Qf6 Qb3 44.Rg3 b6 45.Rg5 e5 46.fxe5 Qxb2+ 
47.Kd1 Qb1+ 48.Ke2 Qb2+ 49.Kd1 Qb1+ 50.Ke2 Qa2+ 51.Kd1 Qe6 52.Ke2 Qa2+ 53.
Kd1 Qe6 54.Ke2 Kh7 55.Rh5+ Bh6 56.Qf4 Qg7 57.d4 Kg8 0-1

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.13"]
[Round "8"]
[White "Tatai, Stefano"]
[Black "Piasetski, Leon David"]
[Result "1-0"]
[WhiteElo "2480"]
[BlackElo "2395"]
[ECO "A71"]
[EventDate "1977.02.06"]
[PlyCount "79"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.e4 Bg7 8.Bg5 h6 
9.Bh4 g5 10.Bg3 Nh5 11.Bb5+ Kf8 12.Be2 Nxg3 13.fxg3 Nd7 14.O-O Qe7 15.Kh1 
a6 16.a4 Kg8 17.Qc2 Rh7 18.Nd1 Ne5 19.Ne3 h5 20.Nc4 Nxc4 21.Bxc4 h4 22.
gxh4 gxh4 23.e5 h3 24.e6 Rh6 25.Rae1 fxe6 26.dxe6 b5 27.axb5 axb5 28.Bd5 
Bb7 29.Qe4 Ra4 30.Qf5 hxg2+ 31.Kxg2 Bxd5 32.Qxd5 Rg4+ 33.Kh1 Kh8 34.Qa8+ 
Kh7 35.Rg1 Rxg1+ 36.Rxg1 Rh5 37.Qe4+ Kh8 38.Qg4 Rh6 39.Ng5 Be5 40.Rg2 {
Tiempo} 1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.13"]
[Round "8"]
[White "Ciocaltea, Victor"]
[Black "Robatsch, Karl"]
[Result "1/2-1/2"]
[WhiteElo "2365"]
[BlackElo "2435"]
[ECO "B30"]
[EventDate "1977.02.06"]
[PlyCount "26"]

1.e4 c5 2.Nf3 Nc6 3.Bb5 e6 4.O-O Nge7 5.b3 Nd4 6.Be2 Nec6 7.c3 Nxe2+ 8.
Qxe2 d5 9.exd5 Qxd5 10.d4 cxd4 11.cxd4 Bb4 12.Na3 Bd7 13.Nc4 O-O 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.15"]
[Round "9"]
[White "Christiansen, Larry Mark"]
[Black "Gheorghiu, Florin"]
[Result "1-0"]
[WhiteElo "2460"]
[BlackElo "2545"]
[ECO "D42"]
[EventDate "1977.02.06"]
[PlyCount "85"]

{Dos favoritos se encuentran} 
1.c4 c5 2.Nf3 Nf6 3.Nc3 e6 4.e3 d5 5.cxd5 Nxd5 6.d4 cxd4 7.exd4 Be7 8.Bd3 
Nc6 9.O-O O-O 10.Re1 Nf6 11.a3 b6 12.Bc2 Bb7 13.Qd3 g6 14.Bh6 Re8 15.Rad1 
Rc8 16.Bb3 Na5 17.Ba2 Nd5 18.Ne4 $5 {Las blancas controlan mas territorio}
18...Rc7 $5 ( 18...Nf6 19.Nc3 Nd5 20.Ne5 Bf8 21.Qh3 {Tambien da ventaja a 
las balncas} ) 19.Ne5 Bf8 $6 ( {Preferible era} 19...Nc6 ) 20.Bg5 $1 Be7 
21.Bxe7 Rexe7 22.Bxd5 $6 ( 22.Qg3 $1 Nc6 23.h4 {al ataque} ) 22...exd5 23.
Nf6+ Kg7 24.Qh3 $1 h5 ( 24...Kxf6 $2 25.Ng4+ $1 {El rey puede ir en 
cualquier direccion, pero las blancas ganaran de todos modos} ) 25.Nxh5+ 
$6 ( 25.Qh4 $1 Qd6 {(Christiansen)} 26.Nxh5+ $1 gxh5 27.Rd3 $1 {Y las 
blancas tienen ataque ganador} ) 25...gxh5 26.Rd3 Qh8 $1 27.Rg3+ Kf8 28.
Rg5 Re6 $2 ( 28...h4 $1 29.Qf5 ( 29.Rg4 $2 Rxe5 30.dxe5 Qxe5 $1 ) 29...Rc6
30.Rh5 Qg8 {Defiende adecuadamente} ) 29.Qxe6 $6 ( 29.Rxh5 $1 Qf6 30.f4 $1
{Gana para las blancas} ) 29...fxe6 30.Ng6+ Kg7 31.Nxh8+ Kxh8 32.Rxh5+ Kg7
33.h4 {Las blancas entran mejor en el final} 33...Nc6 $6 ( {Lo correcto es
} 33...Bc8 $1 34.Re3 Kg6 ) 34.Rxe6 Nxd4 35.Rg5+ Kh7 36.Rd6 $5 Rf7 $5 37.f3
$5 Nf5 $4 38.Rxf5 $1 Rxf5 39.Rd7+ Kg6 40.Rxb7 Rf4 41.Rxa7 {Las blancas han
llegado a un final de torres ganado} 1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.15"]
[Round "9"]
[White "Garcia Padron, Jose"]
[Black "Bellon Lopez, Juan Manuel"]
[Result "1-0"]
[WhiteElo "2425"]
[BlackElo "2415"]
[EventDate "1977.02.06"]
[PlyCount "0"]

1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.15"]
[Round "9"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Medina Garcia, Antonio Angel"]
[Result "1-0"]
[WhiteElo "2410"]
[BlackElo "2345"]
[ECO "C42"]
[EventDate "1977.02.06"]
[PlyCount "51"]

1.e4 e5 2.Nc3 Nf6 3.Nf3 g6 4.Bc4 Bg7 5.d3 d6 6.Bg5 Nc6 7.h3 h6 8.Be3 Na5 
9.Qd2 Nxc4 10.dxc4 b6 11.O-O-O Bb7 12.Qd3 O-O 13.g4 Nd7 14.Nd5 Re8 15.h4 
c6 16.Nc3 Re6 17.Qd2 Qf8 18.h5 g5 19.Ng1 Rd8 20.Nge2 Nf6 21.Ng3 d5 22.Nf5 
Nxg4 23.Bxg5 hxg5 24.Qxg5 Rf6 25.h6 Nxh6 26.Rxh6 $138 {y aqui se cayo la 
bandera del negro} 1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.15"]
[Round "9"]
[White "Byrne, Robert"]
[Black "Pavlov, Mircea"]
[Result "1/2-1/2"]
[WhiteElo "2580"]
[BlackElo "2380"]
[ECO "B67"]
[EventDate "1977.02.06"]
[PlyCount "46"]

1.e4 c5 2.Nf3 d6 3.d4 Nf6 4.Nc3 cxd4 5.Nxd4 Nc6 6.Bg5 e6 7.Qd2 a6 8.O-O-O 
Bd7 9.f4 b5 10.Bxf6 gxf6 11.Nxc6 Bxc6 12.Qe3 Qe7 13.Bd3 b4 14.Ne2 Qa7 15.
Qxa7 Rxa7 16.Nd4 Ba8 17.Rhe1 Bh6 18.g3 Ke7 19.Bc4 Rc8 20.b3 Rc5 21.Bd5 Kd7
22.Bxa8 Rxa8 23.Rd3 Rac8 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.15"]
[Round "9"]
[White "Piasetski, Leon David"]
[Black "Ruiz Gutierrez, Manuel"]
[Result "1-0"]
[WhiteElo "2395"]
[BlackElo "2260"]
[ECO "A54"]
[EventDate "1977.02.06"]
[PlyCount "65"]

1.c4 e5 2.Nc3 Nf6 3.Nf3 d6 4.d4 Nbd7 5.Bg5 Be7 6.e3 O-O 7.Qc2 c6 8.O-O-O 
Qc7 9.h4 Re8 10.Bd3 Nf8 11.Bxf6 Bxf6 12.Ne4 Bd8 $2 ( 12...Qe7 ) 13.dxe5 
dxe5 14.Nd6 Re7 15.Ng5 h6 ( 15...g6 16.c5 $16 ) 16.Bh7+ Kh8 17.Ndxf7+ Rxf7
18.Nxf7+ Qxf7 19.Rxd8 Bf5 20.Rxa8 ( 20.Rxf8+ $142 Rxf8 21.Qxf5 Qxf5 22.
Bxf5 Rxf5 23.f3 $16 ) 20...Bxc2 21.Bxc2 Qxf2 22.Bg6 $2 ( 22.Rd1 $16 ) 
22...e4 $2 ( 22...Kg8 ) 23.Kb1 a5 ( 23...Kg8 24.Bxe4 Qxe3 25.Re8 ) 24.h5 
$2 ( 24.Rd1 ) 24...Kg8 25.g4 $4 ( 25.Bxe4 $18 ) 25...Qxe3 26.a3 $2 ( 26.
Re8 $16 ) 26...Qd3+ 27.Ka1 Qxc4 $4 ( 27...Qe2 ) 28.Re1 e3 29.Re8 b5 30.
R8xe3 b4 ( 30...Qxg4 31.Re8 Qf3 32.Rd8 ) 31.Re8 Qf4 32.Rxf8+ Qxf8 33.Re8 
1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.15"]
[Round "9"]
[White "Hernandez Onna, Roman"]
[Black "Ciocaltea, Victor"]
[Result "1/2-1/2"]
[WhiteElo "2435"]
[BlackElo "2365"]
[ECO "E61"]
[EventDate "1977.02.06"]
[PlyCount "55"]

1.d4 Nf6 2.c4 c5 3.e3 g6 4.Nc3 Bg7 5.Nf3 O-O 6.Be2 d6 7.O-O Na6 8.h3 Bf5 
9.d5 Nc7 10.Bd3 Bxd3 11.Qxd3 a6 12.b3 b5 13.Rb1 Rb8 14.e4 Nd7 15.Be3 Qc8 
16.Rfc1 Qb7 17.Qd2 f6 18.Bh6 Qb6 19.Bxg7 Kxg7 20.Qe3 bxc4 21.bxc4 Qa5 22.
Rxb8 Rxb8 23.Nd2 Qa3 24.Rc2 Na8 25.f4 Nab6 26.Qe2 Na4 27.Nxa4 Qxa4 28.Nf3 
1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.15"]
[Round "9"]
[White "Robatsch, Karl"]
[Black "Tatai, Stefano"]
[Result "1/2-1/2"]
[WhiteElo "2435"]
[BlackElo "2480"]
[ECO "B17"]
[EventDate "1977.02.06"]
[PlyCount "36"]

1.e4 c6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Nd7 5.Bc4 Ngf6 6.Nxf6+ Nxf6 7.Nf3 Bf5 8.
Ne5 e6 9.O-O Be7 10.c3 O-O 11.Bg5 Nd7 12.Bxe7 Qxe7 13.Nxd7 Qxd7 14.Qe2 Qc7
15.Rad1 Rad8 16.Qe3 Rd7 17.Rd2 Rfd8 18.Rfd1 h6 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.16"]
[Round "10"]
[White "Gheorghiu, Florin"]
[Black "Bellon Lopez, Juan Manuel"]
[Result "1-0"]
[WhiteElo "2545"]
[BlackElo "2415"]
[EventDate "1977.02.06"]
[PlyCount "0"]

1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.16"]
[Round "10"]
[White "Christiansen, Larry Mark"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "1-0"]
[WhiteElo "2460"]
[BlackElo "2410"]
[ECO "D70"]
[EventDate "1977.02.06"]
[PlyCount "67"]

1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.Nf3 g6 5.e4 Nb6 6.d4 Bg7 7.h3 O-O 8.Be2 
Nc6 9.Be3 f5 10.exf5 Bxf5 $5 ( {Lo habitual es} 10...gxf5 ) 11.Qb3+ Kh8 
12.d5 $1 {El blanco tiene un plus} 12...Ne5 13.Nxe5 Bxe5 14.Rd1 Qd6 15.O-O
a5 16.a3 a4 17.Qb5 Bd7 $2 ( {Un movimiento de espera sutil} 17...Kg8 ) 18.
Qd3 Bf5 $5 19.Qd2 $1 Rad8 20.Rfe1 Bg7 21.Bf1 $1 e5 22.dxe6 Qe7 ( 22...Qxd2
23.Bxd2 Rfe8 24.e7 Rd7 25.Bf4 Bxc3 26.Rxd7 $1 Bxd7 27.bxc3 Nd5 28.Be5+ Kg8
29.c4 Nxe7 30.Bxc7 {ganando un peon} ) 23.Qc1 Qxe6 24.Rxd8 Rxd8 25.Bg5 Qc8
26.Bxd8 Qxd8 27.Qe3 Bf6 28.Bb5 c6 29.Bxa4 Nc4 30.Qe2 Qd4 31.Rd1 Qf4 32.g3 
Qe5 33.Qxc4 b5 34.Qf7 $1 {Christiansen logra vencer en una solida partida}
1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.16"]
[Round "10"]
[White "Pavlov, Mircea"]
[Black "Garcia Padron, Jose"]
[Result "1/2-1/2"]
[WhiteElo "2380"]
[BlackElo "2425"]
[ECO "B82"]
[EventDate "1977.02.06"]
[PlyCount "42"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.f4 Be7 7.Be3 Nc6 8.Qf3 e5
9.Nxc6 bxc6 10.f5 Qa5 11.Bc4 Bb7 12.O-O-O Rd8 13.Bb3 d5 14.Qg3 O-O 15.exd5
cxd5 16.Qxe5 Bb4 17.Bd4 Bd6 18.Qe2 Rfe8 19.Qd2 Bb4 20.Qf2 Qa6 21.Qg3 Bf8 
1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.16"]
[Round "10"]
[White "Medina Garcia, Antonio Angel"]
[Black "Piasetski, Leon David"]
[Result "1/2-1/2"]
[WhiteElo "2345"]
[BlackElo "2395"]
[ECO "C00"]
[EventDate "1977.02.06"]
[PlyCount "107"]

1.e4 e6 2.d4 c5 3.Nf3 cxd4 4.Nxd4 Nc6 5.Nc3 a6 6.g3 Bb4 7.Ne2 Nf6 8.Bg2 
O-O 9.O-O Bc5 10.Bf4 e5 11.Bg5 h6 12.Bxf6 Qxf6 13.Kh1 d6 14.Nd5 Qd8 15.Qd2
Ne7 16.Nec3 Nxd5 17.Nxd5 Bd7 18.c3 a5 19.b3 Kh7 20.a3 Rc8 21.b4 Ba7 22.
Rab1 a4 23.Rbc1 g6 24.f4 f5 25.Bh3 exf4 26.Rxf4 Qg5 27.Re1 Rce8 28.c4 Re5 
29.Nb6 Bc6 30.Qxd6 Rxe4 31.Rfxe4 Bxe4+ 32.Bg2 Bxg2+ 33.Kxg2 Bxb6 34.Qxb6 
Rf7 35.Qe6 Rg7 36.Qd6 h5 37.Qf4 Qd8 38.c5 Qd5+ 39.Qf3 Qd4 40.Re6 Qb2+ 41.
Re2 Qd4 42.h4 Qd7 43.Kh2 Re7 44.b5 Re4 45.Rxe4 fxe4 46.Qxe4 Qxb5 47.Qe7+ 
Kh6 48.Qg5+ Kh7 49.Qe7+ Kh6 50.Qf8+ Kh7 51.Qf7+ Kh6 52.Qf4+ Kh7 53.Qf7+ 
Kh6 54.Qf8+ 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.16"]
[Round "10"]
[White "Ciocaltea, Victor"]
[Black "Byrne, Robert"]
[Result "1/2-1/2"]
[WhiteElo "2365"]
[BlackElo "2580"]
[ECO "B30"]
[EventDate "1977.02.06"]
[PlyCount "39"]

1.e4 c5 2.Nf3 Nc6 3.Bb5 e6 4.O-O Nge7 5.c3 a6 6.Ba4 b5 7.Bc2 Bb7 8.d3 g6 
9.Be3 d6 10.Qd2 Bg7 11.Bh6 O-O 12.Bxg7 Kxg7 13.d4 Qb6 14.dxc5 dxc5 15.Qe3 
Na5 16.Nbd2 Qc7 17.h4 e5 18.Rac1 c4 19.Rfd1 Rad8 20.b4 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.16"]
[Round "10"]
[White "Ruiz Gutierrez, Manuel"]
[Black "Robatsch, Karl"]
[Result "1/2-1/2"]
[WhiteElo "2260"]
[BlackElo "2435"]
[ECO "B58"]
[EventDate "1977.02.06"]
[PlyCount "49"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 g6 7.O-O Nxd4 8.Qxd4
Bg7 9.Be3 O-O 10.Qd2 Bd7 11.f3 Qa5 12.Rfd1 Rfc8 13.Nb5 Qxd2 14.Rxd2 a6 15.
Nd4 b5 16.c3 Be8 17.a4 bxa4 18.Bd1 d5 19.e5 Nd7 20.e6 Nc5 21.exf7+ Bxf7 
22.Bxa4 Nxa4 23.Rxa4 e5 24.Ne2 Rc6 25.f4 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.16"]
[Round "10"]
[White "Tatai, Stefano"]
[Black "Hernandez Onna, Roman"]
[Result "1/2-1/2"]
[WhiteElo "2480"]
[BlackElo "2435"]
[ECO "D32"]
[EventDate "1977.02.06"]
[PlyCount "30"]

1.d4 d5 2.c4 e6 3.Nc3 c5 4.e3 Nf6 5.Nf3 Nc6 6.cxd5 exd5 7.Be2 cxd4 8.Nxd4 
Bd6 9.O-O O-O 10.Nxc6 bxc6 11.b3 Qe7 12.Bb2 Qe5 13.g3 Bh3 14.Re1 Rfe8 15.
Bf1 Bg4 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.17"]
[Round "11"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Gheorghiu, Florin"]
[Result "1/2-1/2"]
[WhiteElo "2410"]
[BlackElo "2545"]
[ECO "D76"]
[EventDate "1977.02.06"]
[PlyCount "89"]

1.g3 g6 2.Bg2 Bg7 3.d4 d5 4.Nf3 Nf6 5.c4 O-O 6.cxd5 Nxd5 7.O-O Nc6 8.Nc3 
Nb6 9.d5 Na5 10.Qd3 c6 11.Rd1 cxd5 12.e4 e6 13.Qb5 Nac4 14.exd5 Bd7 15.Qb3
exd5 16.Nxd5 Ba4 17.Nxb6 Bxb3 18.Rxd8 Raxd8 19.Bg5 f6 20.axb3 Nxb6 21.Be3 
Rfe8 22.Rxa7 Rd1+ 23.Bf1 Nd5 24.Bd2 g5 25.h3 h5 26.Ra4 Re2 27.Rd4 g4 28.
hxg4 hxg4 29.Bc3 Ra1 30.Rxg4 Nxc3 31.bxc3 Rc2 32.Nd4 Rcc1 33.Nf5 Rxf1+ 34.
Kg2 Rg1+ 35.Kf3 Ra5 36.Nxg7 Kf7 37.Kf4 Rf1 38.f3 Rg5 39.Nf5 Rxg4+ 40.Kxg4 
Ke6 41.Kf4 Rc1 42.Nd4+ Kd5 43.Ne2 Re1 44.Nd4 b6 45.g4 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.17"]
[Round "11"]
[White "Bellon Lopez, Juan Manuel"]
[Black "Pavlov, Mircea"]
[Result "0-1"]
[WhiteElo "2415"]
[BlackElo "2380"]
[EventDate "1977.02.06"]
[PlyCount "0"]

0-1

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.17"]
[Round "11"]
[White "Piasetski, Leon David"]
[Black "Christiansen, Larry Mark"]
[Result "1/2-1/2"]
[WhiteElo "2395"]
[BlackElo "2460"]
[ECO "D76"]
[EventDate "1977.02.06"]
[PlyCount "31"]

1.Nf3 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O Nc6 6.d4 d5 7.cxd5 Nxd5 8.e4 
Nb6 9.d5 Na5 10.Nc3 c6 11.Ne1 cxd5 12.exd5 e6 13.Nc2 exd5 14.Nxd5 Be6 15.
Nce3 Rc8 16.Re1 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.17"]
[Round "11"]
[White "Garcia Padron, Jose"]
[Black "Ciocaltea, Victor"]
[Result "1/2-1/2"]
[WhiteElo "2425"]
[BlackElo "2365"]
[ECO "B15"]
[EventDate "1977.02.06"]
[PlyCount "31"]

1.Nf3 g6 2.e4 Bg7 3.d4 c6 4.Nc3 d5 5.exd5 cxd5 6.Bb5+ Bd7 7.Qe2 Nf6 8.Bg5 
O-O 9.O-O-O Bg4 10.h3 Bxf3 11.Qxf3 e6 12.h4 h6 13.Bf4 a6 14.Be2 Nc6 15.Qe3
h5 16.Bh6 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.17"]
[Round "11"]
[White "Robatsch, Karl"]
[Black "Medina Garcia, Antonio Angel"]
[Result "1-0"]
[WhiteElo "2435"]
[BlackElo "2345"]
[ECO "A24"]
[EventDate "1977.02.06"]
[PlyCount "63"]

1.c4 Nf6 2.Nc3 e5 3.g3 g6 4.d4 exd4 5.Qxd4 Nc6 6.Qd2 Bg7 7.Bg2 O-O 8.b3 d6
9.Bb2 Re8 10.Nh3 Bxh3 11.Bxh3 Ne4 12.Nxe4 Rxe4 13.Bg2 Bxb2 14.Qxb2 Re5 15.
O-O Qe7 16.e3 Re8 17.Rad1 Qf8 18.Rd5 Qg7 19.Qa3 a5 20.Rb5 Rxb5 21.cxb5 Nd8
22.Qxa5 b6 23.Qd2 Qe5 24.a4 Ne6 25.b4 Re7 26.Bd5 Qf5 27.f4 h5 28.a5 bxa5 
29.bxa5 c6 30.Bxc6 Nc5 31.a6 h4 32.Qxd6 1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.17"]
[Round "11"]
[White "Byrne, Robert"]
[Black "Tatai, Stefano"]
[Result "1/2-1/2"]
[WhiteElo "2580"]
[BlackElo "2480"]
[ECO "C87"]
[EventDate "1977.02.06"]
[PlyCount "52"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 Bd7 6.d4 Nf6 7.Nbd2 Be7 8.O-O O-O
9.Re1 exd4 10.cxd4 Nb4 11.Bxd7 Nxd7 12.Nf1 c5 13.a3 Nc6 14.dxc5 dxc5 15.
Bf4 Re8 16.Ne3 Nf8 17.Nd5 Ne6 18.Bg3 Bf6 19.a4 Nb4 20.Qb3 a5 21.Rad1 Bd4 
22.Qc4 Rc8 23.b3 Ng5 24.Nxg5 Qxg5 25.Nc7 Red8 26.Nb5 Qe7 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.17"]
[Round "11"]
[White "Hernandez Onna, Roman"]
[Black "Ruiz Gutierrez, Manuel"]
[Result "1-0"]
[WhiteElo "2435"]
[BlackElo "2260"]
[ECO "A26"]
[EventDate "1977.02.06"]
[PlyCount "73"]

1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 d6 6.O-O Nh6 7.d3 O-O 8.Rb1 Bg4 
9.h3 Bd7 10.b4 f6 11.b5 Ne7 12.a4 Nf7 13.d4 Qc8 14.Kh2 Be6 15.Qb3 Rd8 16.
e4 Re8 17.Rd1 b6 18.Be3 a5 19.Rbc1 Bh6 20.Nd5 Bxd5 21.cxd5 Bxe3 22.Qxe3 
Kg7 23.dxe5 fxe5 24.h4 Ng8 25.Bh3 Qd8 26.Ng5 Nxg5 27.hxg5 h6 28.gxh6+ Nxh6
29.Kg2 Nf7 30.Rh1 Rh8 31.Be6 Rxh1 32.Rxh1 Qg5 33.Bxf7 Qxe3 34.fxe3 Kxf7 
35.Rh7+ Kf6 36.Rxc7 Rb8 37.Rd7 1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.18"]
[Round "12"]
[White "Gheorghiu, Florin"]
[Black "Pavlov, Mircea"]
[Result "1/2-1/2"]
[WhiteElo "2545"]
[BlackElo "2380"]
[ECO "A10"]
[EventDate "1977.02.06"]
[PlyCount "42"]

1.c4 g6 2.e4 e5 3.d4 Nf6 4.dxe5 Nxe4 5.Bd3 Nc5 6.Bc2 Bg7 7.Nf3 Nc6 8.O-O 
O-O 9.Bg5 f6 10.exf6 Bxf6 11.Bxf6 Qxf6 12.Nc3 d6 13.Nd5 Qg7 14.b4 Ne6 15.
Re1 Bd7 16.Be4 Rae8 17.Qd2 Ncd8 18.Qc3 c6 19.Qxg7+ Kxg7 20.Nc3 Nf7 21.Rad1
Nc7 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.18"]
[Round "12"]
[White "Castro Rojas, Oscar Humberto"]
[Black "Piasetski, Leon David"]
[Result "1/2-1/2"]
[WhiteElo "2410"]
[BlackElo "2395"]
[ECO "A01"]
[EventDate "1977.02.06"]
[PlyCount "46"]

1.b3 e5 2.Bb2 d6 3.g3 Nf6 4.Bg2 g6 5.e4 Bg7 6.Ne2 O-O 7.O-O Nc6 8.f4 exf4 
9.Nxf4 Bg4 10.Qc1 g5 11.Nd3 Be2 12.Rf2 Bxd3 13.cxd3 Ng4 14.Rf1 Nge5 15.Bc3
Nxd3 16.Qc2 Nde5 17.Na3 Qd7 18.Rad1 Rae8 19.d4 Ng6 20.Nc4 Nge7 21.Ne3 h6 
22.Bf3 Qd8 23.Qg2 Nb8 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.18"]
[Round "12"]
[White "Ciocaltea, Victor"]
[Black "Bellon Lopez, Juan Manuel"]
[Result "1-0"]
[WhiteElo "2365"]
[BlackElo "2415"]
[EventDate "1977.02.06"]
[PlyCount "0"]

1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.18"]
[Round "12"]
[White "Christiansen, Larry Mark"]
[Black "Robatsch, Karl"]
[Result "1/2-1/2"]
[WhiteElo "2460"]
[BlackElo "2435"]
[ECO "B73"]
[EventDate "1977.02.06"]
[PlyCount "24"]

1.Nf3 g6 2.e4 Bg7 3.d4 d6 4.Be2 c5 5.Nc3 cxd4 6.Nxd4 Nc6 7.Be3 Nf6 8.O-O 
O-O 9.Qd2 Ng4 10.Bxg4 Bxg4 11.Nd5 Rc8 12.f4 Be6 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.18"]
[Round "12"]
[White "Tatai, Stefano"]
[Black "Garcia Padron, Jose"]
[Result "1/2-1/2"]
[WhiteElo "2480"]
[BlackElo "2425"]
[ECO "D36"]
[EventDate "1977.02.06"]
[PlyCount "29"]

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 Nbd7 6.e3 c6 7.Bd3 Bd6 8.Qc2 
Nf8 9.Nge2 Ng6 10.Ng3 O-O 11.Nh5 Be7 12.Bxf6 Bxf6 13.O-O Be7 14.f4 Bd6 15.
Qf2 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.18"]
[Round "12"]
[White "Medina Garcia, Antonio Angel"]
[Black "Hernandez Onna, Roman"]
[Result "1/2-1/2"]
[WhiteElo "2345"]
[BlackElo "2435"]
[ECO "B26"]
[EventDate "1977.02.06"]
[PlyCount "82"]

1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Be3 Rb8 7.f4 b5 8.Qd2 b4 9.
Nd1 e6 10.Nf3 Nd4 11.O-O Ne7 12.Nh4 O-O 13.c3 bxc3 14.bxc3 Nb5 15.Rc1 f5 
16.Nf3 h6 17.Re1 Bb7 18.e5 Nd5 19.Bf2 Nbc7 20.Nb2 Nb6 21.Rb1 Qe7 22.a4 d5 
23.a5 Nd7 24.Na4 Bc6 25.Qa2 Rfc8 26.Nd2 Bf8 27.c4 Ba8 28.Nc3 d4 29.Nb5 
Bxg2 30.Kxg2 Ra8 31.Nd6 Rcb8 32.Qa4 Na6 33.Nf3 Qd8 34.Nb5 Qc8 35.Na3 Rxb1 
36.Rxb1 Nb4 37.Rb3 Rb8 38.Be1 g5 39.Kf2 g4 40.Ng1 a6 41.h4 Rb7 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.18"]
[Round "12"]
[White "Ruiz Gutierrez, Manuel"]
[Black "Byrne, Robert"]
[Result "0-1"]
[WhiteElo "2260"]
[BlackElo "2580"]
[ECO "B56"]
[EventDate "1977.02.06"]
[PlyCount "50"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nxc6 bxc6 6.Bd3 g6 7.O-O Bg7 8.
Nc3 d6 9.Qe2 O-O 10.Kh1 Nd7 11.f4 Rb8 12.Nd1 Nc5 13.c3 Nxd3 14.Qxd3 Qa5 
15.Re1 Ba6 16.Qg3 e6 17.h3 f5 18.e5 Rfd8 19.exd6 Rxd6 20.Nf2 c5 21.h4 Qd8 
22.h5 gxh5 23.b4 cxb4 24.Bb2 h4 25.Qh3 Rc8 0-1

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.19"]
[Round "13"]
[White "Piasetski, Leon David"]
[Black "Gheorghiu, Florin"]
[Result "1/2-1/2"]
[WhiteElo "2395"]
[BlackElo "2545"]
[ECO "A27"]
[EventDate "1977.02.06"]
[PlyCount "19"]

1.c4 e5 2.Nc3 Nc6 3.Nf3 f5 4.d4 e4 5.Ng5 Nf6 6.Nh3 g6 7.Nf4 Bg7 8.e3 d6 9.
Be2 O-O 10.h4 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.19"]
[Round "13"]
[White "Pavlov, Mircea"]
[Black "Ciocaltea, Victor"]
[Result "0-1"]
[WhiteElo "2380"]
[BlackElo "2365"]
[ECO "B15"]
[EventDate "1977.02.06"]
[PlyCount "96"]

1.e4 g6 2.d4 Bg7 3.Nc3 c6 4.Be3 d5 5.f3 h5 6.Qd2 Nh6 7.h3 h4 8.O-O-O Ng8 
9.Nge2 Nf6 10.g4 hxg3 11.Nxg3 Qa5 12.Kb1 Qb6 13.e5 Nh5 14.Nxh5 Rxh5 15.Ne2
Rh8 16.h4 Na6 17.Nf4 Bf5 18.Bd3 Bxd3 19.Nxd3 e6 20.c3 O-O-O 21.Ka1 Rde8 
22.b4 Qc7 23.Rb1 b6 24.Qe2 Qb7 25.Bg5 Nc7 26.Nf4 Bh6 27.Nh3 Bxg5 28.Nxg5 
Nb5 29.Rb3 Qe7 30.a4 Nc7 31.f4 Kb7 32.h5 Rh6 33.Rbb1 Reh8 34.Qg2 Rxh5 35.
Rxh5 Rxh5 36.Rh1 a5 37.Rxh5 gxh5 38.bxa5 Qa3+ 39.Kb1 Qxa4 40.Nxf7 Qb3+ 41.
Qb2 Qxb2+ 42.Kxb2 bxa5 43.f5 exf5 44.Nd6+ Kb6 45.Nxf5 Ne6 46.c4 dxc4 47.
Kc3 Kb5 48.Nd6+ Ka4 0-1

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.19"]
[Round "13"]
[White "Robatsch, Karl"]
[Black "Castro Rojas, Oscar Humberto"]
[Result "1/2-1/2"]
[WhiteElo "2435"]
[BlackElo "2410"]
[ECO "A34"]
[EventDate "1977.02.06"]
[PlyCount "23"]

1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.g3 c5 5.Bg2 e6 6.Nxd5 exd5 7.Qb3 Be6 8.
Qxb7 Nd7 9.Nf3 Be7 10.d4 O-O 11.Qb3 Bf6 12.Qd1 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.19"]
[Round "13"]
[White "Bellon Lopez, Juan Manuel"]
[Black "Tatai, Stefano"]
[Result "0-1"]
[WhiteElo "2415"]
[BlackElo "2480"]
[EventDate "1977.02.06"]
[PlyCount "0"]

0-1

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.19"]
[Round "13"]
[White "Hernandez Onna, Roman"]
[Black "Christiansen, Larry Mark"]
[Result "1/2-1/2"]
[WhiteElo "2435"]
[BlackElo "2460"]
[ECO "A37"]
[EventDate "1977.02.06"]
[PlyCount "20"]

1.c4 c5 2.Nc3 g6 3.Nf3 Bg7 4.g3 Nc6 5.Bg2 e6 6.a3 Nge7 7.O-O O-O 8.d3 b6 
9.Bd2 Bb7 10.Rb1 d5 1/2-1/2

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.19"]
[Round "13"]
[White "Garcia Padron, Jose"]
[Black "Ruiz Gutierrez, Manuel"]
[Result "1-0"]
[WhiteElo "2425"]
[BlackElo "2260"]
[ECO "B57"]
[EventDate "1977.02.06"]
[PlyCount "91"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Bc4 e5 7.Nf5 Bxf5 8.exf5
h6 9.O-O Be7 10.Nd5 Nxd5 11.Bxd5 Bf6 12.c3 Qd7 13.Qf3 O-O 14.Rd1 Rfd8 15.
Qh5 Kf8 16.Be3 Rac8 17.Rd2 b6 18.Rad1 Na5 19.Qg4 Rc7 20.Rd3 Qb5 21.Bc1 Ke7
22.b3 Nc6 23.a4 Qa5 24.Qe4 Nb8 25.Bb2 Nd7 26.R3d2 Bg5 27.Re2 Nf6 28.Qf3 
Nxd5 29.Rxd5 Rc5 30.Rd3 Rc7 31.Ba3 Rcd7 32.Bb4 Qa6 33.Rxe5+ Kf8 34.Red5 
Kg8 35.Rxd6 Rxd6 36.Rxd6 Rxd6 37.Bxd6 Bf6 38.Bb4 Qc8 39.c4 Qd7 40.g3 Kh7 
41.Qd5 Qe8 42.c5 bxc5 43.Bxc5 Qe1+ 44.Kg2 a6 45.b4 Qe8 46.a5 1-0

[Event "17th Costa del Sol it"]
[Site "Torremolinos ESP"]
[Date "1977.02.19"]
[Round "13"]
[White "Byrne, Robert"]
[Black "Medina Garcia, Antonio Angel"]
[Result "1/2-1/2"]
[WhiteElo "2580"]
[BlackElo "2345"]
[ECO "C74"]
[EventDate "1977.02.06"]
[PlyCount "66"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 f5 6.exf5 Bxf5 7.d4 e4 8.Ng5 d5 
9.f3 h6 10.fxe4 hxg5 11.exf5 Bd6 12.Qf3 g4 13.Qxg4 Nf6 14.Qe2+ Kf8 15.Bxc6
bxc6 16.Bg5 Qd7 17.Bxf6 gxf6 18.Qf3 Re8+ 19.Kd1 Re4 20.g3 Qe8 21.Nd2 Re3 
22.Qg2 Rh7 23.Kc2 Re2 24.Qf3 Rhe7 25.Rad1 R7e3 26.Qg4 Qb8 27.Qh4 Kg7 28.
Qg4+ Kf8 29.Qg6 Be7 30.Qh6+ Kg8 31.Qg6+ Kf8 32.Qh6+ Kg8 33.Qg6+ Kf8 
1/2-1/2

