[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.24"]
[Round "1"]
[White "Mecking, Henrique"]
[Black "Ciocaltea, Victor"]
[Result "1/2-1/2"]
[WhiteElo "2540"]
[BlackElo "2460"]
[ECO "B13"]
[EventDate "1971.09.20"]
[PlyCount "50"]
[Source "Perpetual Check"]

1.e4 g6 2.d4 Bg7 3.c3 c6 4.Bd3 d5 5.exd5 cxd5 6.Nf3 Nc6 7.Bf4 Nh6 8.Nbd2 
O-O 9.O-O f6 10.c4 e6 11.Nb3 Nf7 12.Re1 Nb4 13.Bf1 dxc4 14.Bxc4 Nd5 15.Bd2
Nd6 16.Bd3 b6 17.Rc1 a5 18.Na1 Bd7 19.Nc2 Re8 20.Ne3 Nxe3 21.Bxe3 Rc8 22.
Rxc8 Bxc8 23.Nd2 Bb7 24.Nc4 Bd5 25.Nxd6 Qxd6 1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.24"]
[Round "1"]
[White "Ljubojevic, Ljubomir"]
[Black "Planinc, Albin"]
[Result "0-1"]
[WhiteElo "2510"]
[BlackElo "2510"]
[ECO "C78"]
[EventDate "1971.09.20"]
[PlyCount "70"]
[Source "Perpetual Check"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 Bb7 7.d4 Nxd4 8.Nxd4 
exd4 9.e5 Ne4 10.c3 d3 11.Qxd3 Nc5 12.Qg3 Nxb3 13.axb3 Qe7 14.Bg5 Qe6 15.
f4 f6 16.exf6 Bc5+ 17.Kh1 gxf6 18.Re1 O-O-O 19.Rxe6 dxe6 20.Qe1 fxg5 21.
Nd2 gxf4 22.Qxe6+ Kb8 23.Nf3 Rhg8 24.c4 b4 25.Rf1 Rg6 26.Qf5 Be3 27.h3 Rg3
28.Qxh7 Bxf3 29.Rxf3 Rd1+ 30.Kh2 Bg1+ 31.Kh1 Rg7 32.Qh8+ Kb7 33.Rd3 Re1 
34.g3 Bd4+ 35.Kh2 Rge7 0-1

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.20"]
[Round "1"]
[White "Janosevic, Dragoljub"]
[Black "Baretic, Dragoljub"]
[Result "1-0"]
[WhiteElo "2450"]
[EventDate "1971.09.20"]

1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.20"]
[Round "1"]
[White "Deze, Anton"]
[Black "Szily, Jozsef"]
[Result "1/2-1/2"]
[WhiteElo "2400"]
[BlackElo "2390"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.20"]
[Round "1"]
[White "Ivkov, Borislav"]
[Black "Joksic, Sinisa"]
[Result "1-0"]
[WhiteElo "2560"]
[ECO "D53"]
[EventDate "1971.09.20"]
[PlyCount "127"]
[Source "Perpetual Check"]

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.Bg5 Be7 5.Nf3 O-O 6.Rc1 h6 7.Bh4 b6 8.cxd5 
Nxd5 9.Bxe7 Qxe7 10.Nxd5 exd5 11.g3 Be6 12.Bg2 c5 13.Ne5 cxd4 14.Qxd4 Qf6 
15.O-O Nd7 16.Nc6 Qxd4 17.Nxd4 Rfc8 18.e4 dxe4 19.Bxe4 Rxc1 20.Rxc1 Rd8 
21.Nxe6 fxe6 22.Rc7 a5 23.Kf1 Kf8 24.Ke2 Nc5 25.Bg6 Rd7 26.Rc6 Rb7 27.Bd3 
Ke7 28.Bc4 Kd7 29.Bb5 Ke7 30.Ke3 Kd8 31.a3 Ke7 32.h4 Nd7 33.f3 Ne5 34.Rc8 
Nd7 35.g4 Ne5 36.h5 Kd6 37.Ke4 Rf7 38.Be2 Nd7 39.Ke3 Nf6 40.Bc4 Nd5+ 41.
Bxd5 exd5 42.f4 Re7+ 43.Kd3 Re4 44.Rd8+ Kc5 45.Rf8 Rd4+ 46.Ke3 Re4+ 47.Kd3
Rd4+ 48.Ke3 Re4+ 49.Kf3 Re7 50.Rc8+ Kd6 51.Rd8+ Kc5 52.g5 d4 53.gxh6 gxh6 
54.f5 a4 55.Kf4 Re2 56.f6 Rf2+ 57.Ke5 Re2+ 58.Kf5 Rxb2 59.f7 Rf2+ 60.Kg6 
Rxf7 61.Kxf7 Kc4 62.Rc8+ Kb3 63.Rb8 d3 64.Rxb6+ 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.20"]
[Round "1"]
[White "Filip, Miroslav"]
[Black "Buljovcic, Ivan"]
[Result "1/2-1/2"]
[WhiteElo "2510"]
[BlackElo "2450"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.20"]
[Round "1"]
[White "Bilek, Istvan"]
[Black "Radulov, Ivan"]
[Result "1/2-1/2"]
[WhiteElo "2490"]
[BlackElo "2485"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.20"]
[Round "1"]
[White "Portisch, Lajos"]
[Black "Spiridonov, Nikola"]
[Result "1/2-1/2"]
[WhiteElo "2630"]
[BlackElo "2450"]
[ECO "B14"]
[EventDate "1971.09.20"]
[PlyCount "113"]
[Source "Perpetual Check"]

1.d4 g6 2.e4 c6 3.c4 d5 4.exd5 cxd5 5.Nc3 Nf6 6.Qb3 Bg7 7.cxd5 O-O 8.Be2 
Nbd7 9.Bf3 Nb6 10.Bg5 Bf5 11.Rd1 a5 12.Nge2 a4 13.Qb5 Nc8 14.Ng3 Nd6 15.
Qe2 Bd7 16.O-O Qb6 17.Rfe1 Rfe8 18.Qd3 Rac8 19.Re2 Kf8 20.Rc2 Rc4 21.Qd2 
Ng8 22.Be3 Rec8 23.Be2 R4c7 24.Rdc1 Qb4 25.a3 Qb3 26.Bd1 Nf6 27.Nxa4 Rxc2 
28.Rxc2 Rxc2 29.Bxc2 Qxd5 30.Nb6 Qb5 31.Nxd7+ Nxd7 32.Bd3 Qd5 33.Ne2 e5 
34.Nc3 Qb3 35.dxe5 Bxe5 36.Bb5 Qe6 37.Bxd7 Qxd7 38.Bc5 Qc6 39.Bb4 Kg7 40.
f4 Nc4 41.Qd8 Bd6 42.Bxd6 Nxd6 43.Qh4 h5 44.Qf2 Qc4 45.h3 Qd3 46.Qc5 Nc4 
47.Kh2 h4 48.Qg5 Nxb2 49.Qe5+ Kg8 50.Qe8+ Kg7 51.Qe5+ Kg8 52.Ne4 Qxa3 53.
Qb8+ Kg7 54.Qxb7 Nd1 55.Qd5 Ne3 56.Qd4+ Kg8 57.Qd8+ 1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.21"]
[Round "2"]
[White "Ciocaltea, Victor"]
[Black "Spiridonov, Nikola"]
[Result "0-1"]
[WhiteElo "2460"]
[BlackElo "2450"]
[ECO "B30"]
[EventDate "1971.09.20"]
[PlyCount "112"]
[Source "Perpetual Check"]

1.e4 c5 2.Nf3 Nc6 3.Bb5 e6 4.O-O Nge7 5.c3 d5 6.d3 a6 7.Ba4 dxe4 8.dxe4 
Qc7 9.Ne1 Ng6 10.f4 Bd7 11.Be3 Be7 12.Nd2 O-O 13.Bc2 Rfd8 14.Qh5 Be8 15.e5
Na5 16.b3 Nf8 17.Qh3 b5 18.Nef3 Nc6 19.Ne4 Nb8 20.g4 Nbd7 21.g5 Ng6 22.Qg4
Nb6 23.h4 Nd5 24.Bd2 Kh8 25.h5 Nf8 26.Kh2 Bc6 27.Rae1 c4 28.bxc4 bxc4 29.
Nd4 Rab8 30.Rb1 Be8 31.Qg3 Rxb1 32.Rxb1 Rb8 33.Rxb8 Qxb8 34.f5 exf5 35.
Nxf5 Qb2 36.Bd1 Bd8 37.Qg2 Bc6 38.Bf3 Kg8 39.Nd4 Bb7 40.Nd6 Ba8 41.Bxd5 
Bxd5 42.Qxd5 Qxd2+ 43.Kg1 Qe1+ 44.Kg2 Qd2+ 45.Kg3 Qxg5+ 46.Kf2 Qf4+ 47.Nf3
Bh4+ 48.Ke2 Be7 49.Nxc4 Qg4 50.Nd6 Ne6 51.Qa8+ Bf8 52.Qe4 Qxh5 53.c4 h6 
54.Kf2 Bxd6 55.exd6 Qc5+ 56.Ke2 Qxd6 0-1

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.21"]
[Round "2"]
[White "Radulov, Ivan"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[WhiteElo "2485"]
[BlackElo "2630"]
[ECO "B87"]
[EventDate "1971.09.20"]
[PlyCount "72"]
[Source "Perpetual Check"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bc4 e6 7.Bb3 b5 8.Qe2 Be7
9.Bg5 O-O 10.f4 b4 11.Na4 Bd7 12.O-O-O Qa5 13.e5 dxe5 14.Qxe5 Qxe5 15.fxe5
Nd5 16.Bxe7 Nxe7 17.Nc5 Ra7 18.Rhf1 Ng6 19.Rfe1 Rc7 20.Nxd7 Rxd7 21.Nf3 a5
22.Ba4 Rc7 23.Rd6 Rc5 24.Rb6 Nf4 25.Re4 Nd5 26.Rd6 Rfc8 27.Nd4 Kf8 28.Bb3 
Nc7 29.Ba4 Nd5 30.Bb3 Nc6 31.Nxc6 R8xc6 32.Rxc6 Rxc6 33.Bxd5 exd5 34.Rh4 
h6 35.Rd4 Rc5 36.Kd2 Ke7 1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.21"]
[Round "2"]
[White "Buljovcic, Ivan"]
[Black "Bilek, Istvan"]
[Result "1/2-1/2"]
[WhiteElo "2450"]
[BlackElo "2490"]
[ECO "E61"]
[EventDate "1971.09.20"]
[PlyCount "45"]
[Source "Perpetual Check"]

1.d4 Nf6 2.Nf3 g6 3.c4 Bg7 4.Nc3 O-O 5.Bf4 d6 6.e3 Nbd7 7.Be2 c5 8.h3 a6 
9.O-O Qa5 10.Qd2 Re8 11.a3 cxd4 12.exd4 e5 13.b4 Qc7 14.dxe5 dxe5 15.Be3 
b6 16.Rad1 Bb7 17.Qd6 Qc8 18.Na4 Re6 19.Qd2 Qc7 20.Qa2 h6 21.Rd2 Rc8 22.
Rfd1 Bf8 23.Qb3 1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.21"]
[Round "2"]
[White "Joksic, Sinisa"]
[Black "Filip, Miroslav"]
[Result "1/2-1/2"]
[BlackElo "2510"]
[ECO "B14"]
[EventDate "1971.09.20"]
[PlyCount "43"]
[Source "Perpetual Check"]

1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 e6 6.Nf3 Be7 7.Bg5 O-O 8.Bd3 
dxc4 9.Bxc4 a6 10.O-O b5 11.Bd3 Nc6 12.Qe2 Bb7 13.Rad1 Nb4 14.Bb1 Nbd5 15.
Ne4 Nxe4 16.Qxe4 g6 17.Bh6 Re8 18.Ne5 Bf8 19.Qf3 Qf6 20.Bxf8 Qxf3 21.Nxf3 
Rxf8 22.Be4 1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.21"]
[Round "2"]
[White "Szily, Jozsef"]
[Black "Ivkov, Borislav"]
[Result "1/2-1/2"]
[WhiteElo "2390"]
[BlackElo "2560"]
[ECO "B06"]
[EventDate "1971.09.20"]
[PlyCount "41"]
[Source "Perpetual Check"]

1.e4 g6 2.d4 Bg7 3.Bc4 d6 4.Nf3 e6 5.Nc3 a6 6.Bb3 b5 7.a4 b4 8.Ne2 Nf6 9.
Ng3 Bb7 10.Qe2 Nbd7 11.O-O O-O 12.a5 c5 13.c3 bxc3 14.bxc3 Qc7 15.Bf4 Rab8
16.Bc4 Qc6 17.Rfd1 Rbd8 18.d5 exd5 19.exd5 Qc7 20.Qe7 Rfe8 21.Qxd6 1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.21"]
[Round "2"]
[White "Baretic, Dragoljub"]
[Black "Deze, Anton"]
[Result "0-1"]
[BlackElo "2400"]
[ECO "B60"]
[EventDate "1971.09.20"]
[PlyCount "36"]
[Source "Perpetual Check"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Bg5 Bd7 7.Bc4 Qa5 8.Bxf6
gxf6 9.Nb3 Qg5 10.O-O Rg8 11.g3 h5 12.Nd5 Rc8 13.f4 Qh6 14.e5 fxe5 15.Qd3 
e6 16.Nc3 h4 17.Rf2 hxg3 18.hxg3 Nb4 0-1

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.21"]
[Round "2"]
[White "Planinc, Albin"]
[Black "Janosevic, Dragoljub"]
[Result "1-0"]
[WhiteElo "2510"]
[BlackElo "2450"]
[ECO "A01"]
[EventDate "1971.09.20"]
[PlyCount "75"]
[Source "Perpetual Check"]

1.b3 e5 2.Bb2 Nc6 3.c4 Nf6 4.e3 d5 5.cxd5 Nxd5 6.a3 a6 7.d3 g6 8.Nf3 Bg7 
9.Be2 O-O 10.Qc2 Qe7 11.Nbd2 Rd8 12.b4 Qe8 13.Rc1 Nde7 14.O-O Nf5 15.Rfe1 
Nd6 16.Nb3 Qe7 17.Qb1 Bd7 18.d4 e4 19.Nfd2 Be6 20.Rc5 Bxb3 21.Nxb3 Nb8 22.
d5 Bxb2 23.Qxb2 c6 24.dxc6 Nxc6 25.Rec1 Nf5 26.g3 Nd6 27.Nd2 Re8 28.Nb1 
Ne5 29.Nc3 Qf6 30.Qc2 Qg7 31.Rd1 Re6 32.Nxe4 Nxe4 33.Rc8+ Re8 34.Rxa8 Rxa8
35.Qxe4 f5 36.Qd5+ Kf8 37.Qe6 h5 38.Rd5 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.21"]
[Round "2"]
[White "Mecking, Henrique"]
[Black "Ljubojevic, Ljubomir"]
[Result "1-0"]
[WhiteElo "2540"]
[BlackElo "2510"]
[ECO "B50"]
[EventDate "1971.09.20"]
[PlyCount "67"]
[Source "Perpetual Check"]

1.e4 c5 2.Nf3 d6 3.Nc3 a6 4.g3 b5 5.Bg2 Bb7 6.d3 g6 7.O-O Bg7 8.Nh4 b4 9.
Ne2 Nc6 10.f4 Nf6 11.h3 e5 12.f5 d5 13.Bg5 dxe4 14.Bxe4 c4 15.Bg2 cxd3 16.
Qxd3 Qxd3 17.cxd3 Nd7 18.Rac1 Rc8 19.fxg6 hxg6 20.Bd5 Rf8 21.Be4 f5 22.
Bxc6 Rxc6 23.Rxc6 Bxc6 24.Nxg6 Rf7 25.Nd4 exd4 26.Re1+ Ne5 27.Nxe5 Bxe5 
28.Rxe5+ Kd7 29.h4 Bb5 30.Rd5+ Ke6 31.Rxd4 Rc7 32.h5 Rc2 33.h6 Kf7 34.Rd6 
1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.22"]
[Round "3"]
[White "Ljubojevic, Ljubomir"]
[Black "Ciocaltea, Victor"]
[Result "1-0"]
[WhiteElo "2510"]
[BlackElo "2460"]
[ECO "B06"]
[EventDate "1971.09.20"]
[PlyCount "71"]
[Source "Perpetual Check"]

1.e4 g6 2.d4 Bg7 3.Nc3 c6 4.Bc4 d6 5.Qf3 e6 6.Nge2 Nd7 7.a4 a5 8.h4 Ngf6 
9.Ba2 h5 10.Bg5 e5 11.O-O Qe7 12.Qg3 exd4 13.Nxd4 Qe5 14.Nf5 gxf5 15.Bf4 
Ng4 16.Bxe5 Bxe5 17.f4 Bd4+ 18.Kh1 Ndf6 19.Rae1 Kf8 20.Qd3 Bc5 21.e5 Ne4 
22.Rxe4 fxe4 23.Nxe4 Bf5 24.exd6 Rh7 25.Qc4 Ba7 26.Ng5 Rg7 27.Qb3 Nf2+ 28.
Rxf2 Bxf2 29.g4 Bxg4 30.f5 Bxh4 31.f6 Bxg5 32.fxg7+ Kxg7 33.Qxf7+ Kh6 34.
Be6 Rd8 35.Kh2 Bxe6 36.Qxe6+ 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.22"]
[Round "3"]
[White "Janosevic, Dragoljub"]
[Black "Mecking, Henrique"]
[Result "0-1"]
[WhiteElo "2450"]
[BlackElo "2540"]
[ECO "B93"]
[EventDate "1971.09.20"]
[PlyCount "98"]
[Source "Perpetual Check"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.f4 Qc7 7.Nf3 Bg4 8.h3 
Bxf3 9.Qxf3 g6 10.g4 Bg7 11.Bd3 Nc6 12.g5 Nd7 13.Nd5 Qd8 14.c3 b5 15.O-O 
O-O 16.e5 dxe5 17.f5 Rc8 18.Be4 e6 19.Ne3 exf5 20.Nxf5 Ne7 21.Nxg7 Kxg7 
22.Qg3 Qc7 23.Be3 f5 24.gxf6+ Nxf6 25.Qh4 Neg8 26.Bf3 Rf7 27.Rae1 Rcf8 28.
Qg3 Re8 29.Bd1 Rd7 30.Bb3 Nd5 31.Bg5 Ngf6 32.Rf2 Nh5 33.Qf3 Ndf4 34.Qg4 
Rd3 35.Rf3 Qa7+ 36.Kf1 Qb7 37.Ree3 Rxe3 38.Rxe3 Rf8 39.Rf3 e4 40.Bxf4 exf3
41.Be5+ Kh6 42.h4 Rf5 43.Qd4 Qe7 44.Qe3+ g5 45.Qb6+ Nf6 46.hxg5+ Kxg5 47.
Qe3+ Kh5 48.Bd4 Qxe3 49.Bxe3 Ng4 0-1

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.22"]
[Round "3"]
[White "Deze, Anton"]
[Black "Planinc, Albin"]
[Result "0-1"]
[WhiteElo "2400"]
[BlackElo "2510"]
[EventDate "1971.09.20"]

0-1

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.22"]
[Round "3"]
[White "Ivkov, Borislav"]
[Black "Baretic, Dragoljub"]
[Result "1-0"]
[WhiteElo "2560"]
[ECO "B14"]
[EventDate "1971.09.20"]
[PlyCount "75"]
[Source "Perpetual Check"]

1.d4 e6 2.c4 Nf6 3.Nc3 c5 4.e3 d5 5.Nf3 Nc6 6.a3 cxd4 7.exd4 Be7 8.c5 O-O 
9.Bd3 b6 10.b4 bxc5 11.bxc5 e5 12.dxe5 Ne4 13.Nxe4 dxe4 14.Bxe4 Qxd1+ 15.
Kxd1 Rd8+ 16.Kc2 Bb7 17.Rd1 Nb4+ 18.Kb3 Rxd1 19.Bxb7 Rb8 20.axb4 Rxb7 21.
Kc4 Rc7 22.Nd4 a5 23.Nb5 Rc6 24.Nc3 Rg1 25.Nd5 Bf8 26.Kb5 Rc8 27.Nb6 Rc7 
28.Bb2 Rxa1 29.Bxa1 axb4 30.c6 b3 31.Bb2 Ra7 32.Nd5 Ba3 33.Bxa3 Rxa3 34.c7
Ra8 35.Kc6 b2 36.Nc3 g6 37.Kb7 Ra1 38.c8=Q+ 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.22"]
[Round "3"]
[White "Filip, Miroslav"]
[Black "Szily, Jozsef"]
[Result "1-0"]
[WhiteElo "2510"]
[BlackElo "2390"]
[ECO "E69"]
[EventDate "1971.09.20"]
[PlyCount "59"]
[Source "Perpetual Check"]

1.c4 Nf6 2.Nc3 e5 3.Nf3 d6 4.g3 g6 5.Bg2 Bg7 6.d4 Nbd7 7.O-O O-O 8.e4 c6 
9.Rb1 exd4 10.Nxd4 a5 11.h3 Re8 12.Re1 Nc5 13.Bf4 Nh5 14.Be3 Nf6 15.Qc2 
Qc7 16.Rbd1 Nfd7 17.b3 Ne5 18.f4 Ned7 19.Bf2 Nf8 20.Nf3 Nfd7 21.Kh2 f6 22.
Nd4 Nf8 23.Qd2 Bd7 24.Nf3 Re6 25.e5 fxe5 26.fxe5 b6 27.exd6 Bxc3 28.Qxc3 
Rxd6 29.Bxc5 Rxd1 30.Bxf8 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.22"]
[Round "3"]
[White "Bilek, Istvan"]
[Black "Joksic, Sinisa"]
[Result "1-0"]
[WhiteElo "2490"]
[EventDate "1971.09.20"]

1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.22"]
[Round "3"]
[White "Portisch, Lajos"]
[Black "Buljovcic, Ivan"]
[Result "1/2-1/2"]
[WhiteElo "2630"]
[BlackElo "2450"]
[ECO "A25"]
[EventDate "1971.09.20"]
[PlyCount "115"]
[Source "Perpetual Check"]

1.c4 e5 2.Nc3 Nc6 3.g3 d6 4.Bg2 Be6 5.d3 Qd7 6.Nd5 Nd8 7.Nf3 c6 8.Ne3 Bh3 
9.Bxh3 Qxh3 10.d4 Qe6 11.Qc2 Nf6 12.O-O Be7 13.Nf5 O-O 14.Ng5 Qd7 15.dxe5 
dxe5 16.Be3 Re8 17.Rad1 Qc7 18.f4 h6 19.Ne4 Nxe4 20.Qxe4 Bf8 21.Nh4 Be7 
22.f5 Bxh4 23.gxh4 f6 24.Kh1 Nf7 25.Rg1 Kh7 26.Rg4 Re7 27.Rdg1 Nh8 28.h3 
Rd8 29.Kh2 Red7 30.b4 Rf7 31.a4 Re8 32.R4g3 Rd7 33.a5 b6 34.axb6 axb6 35.
Qg4 Rb8 36.Qh5 b5 37.Qg4 Qb7 38.Ra1 Ra8 39.Rgg1 Rxa1 40.Rxa1 Qc8 41.Qe4 
Nf7 42.cxb5 cxb5 43.Bc5 Nd6 44.Qg4 Nb7 45.Be3 Kh8 46.Rc1 Rc7 47.Rg1 Qf8 
48.Re1 Qc8 49.Qh5 Nd6 50.Rf1 Nc4 51.Bc5 Qd7 52.Ra1 Qc6 53.Rd1 Qa8 54.Qg6 
Kg8 55.Qg2 Qc8 56.Qd5+ Kh7 57.Rf1 Rd7 58.Qe6 1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.22"]
[Round "3"]
[White "Spiridonov, Nikola"]
[Black "Radulov, Ivan"]
[Result "1/2-1/2"]
[WhiteElo "2450"]
[BlackElo "2485"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.23"]
[Round "4"]
[White "Ciocaltea, Victor"]
[Black "Radulov, Ivan"]
[Result "1-0"]
[WhiteElo "2460"]
[BlackElo "2485"]
[ECO "B31"]
[EventDate "1971.09.20"]
[PlyCount "111"]
[Source "Perpetual Check"]

1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.c3 e5 6.d4 cxd4 7.cxd4 exd4 8.Bf4 
a6 9.Ba4 b5 10.Bb3 d6 11.Ng5 Ra7 12.a4 h6 13.Nf3 b4 14.Nbd2 g5 15.Bg3 Bg4 
16.h3 Bh5 17.Nc4 Bxf3 18.Qxf3 Ne5 19.Bxe5 Bxe5 20.a5 Qf6 21.Ba4+ Kf8 22.
Qb3 Ne7 23.Qxb4 Kg7 24.Ra3 Qf4 25.Nxe5 Qxe5 26.Rd3 d5 27.Qxd4 Qxd4 28.Rxd4
dxe4 29.Rxe4 Rb8 30.b3 Rc7 31.Rd1 Nf5 32.b4 Rc3 33.Rd5 Kg6 34.b5 axb5 35.
Bxb5 Ra3 36.Bd3 Kf6 37.Re1 Ng7 38.Rd6+ Ne6 39.Bc4 Re8 40.a6 Re7 41.Rb6 Ra4
42.Bb3 Ra5 43.g4 Rc5 44.Kg2 Ra5 45.Kg3 Rc5 46.Re3 Ra5 47.f3 Rc5 48.Re2 
Rcc7 49.Bd5 Ra7 50.Re4 Re8 51.f4 gxf4+ 52.Rxf4+ Kg6 53.Re4 Kf6 54.Re3 Ree7
55.Rb7 Rc7 56.Bxe6 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.23"]
[Round "4"]
[White "Buljovcic, Ivan"]
[Black "Spiridonov, Nikola"]
[Result "1/2-1/2"]
[WhiteElo "2450"]
[BlackElo "2450"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.23"]
[Round "4"]
[White "Joksic, Sinisa"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[BlackElo "2630"]
[ECO "B41"]
[EventDate "1971.09.20"]
[PlyCount "65"]
[Source "Perpetual Check"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.c4 Nf6 6.Nc3 Bb4 7.Bd3 Nc6 8.Bc2 
Qc7 9.O-O Nxd4 10.Qxd4 Ng4 11.e5 Nxe5 12.Ne4 Bf8 13.Bg5 f5 14.Bf4 d6 15.
Ba4+ Bd7 16.Bxd7+ Qxd7 17.Nxd6+ Bxd6 18.Bxe5 Bxe5 19.Qxe5 O-O-O 20.Rfe1 
Rhe8 21.b4 Qd4 22.Qa5 Kb8 23.Rac1 Qf4 24.g3 Qc7 25.Qxc7+ Kxc7 26.Rcd1 Rxd1
27.Rxd1 Rh8 28.c5 Rd8 29.Re1 Kd7 30.Kf1 Ke7 31.Ke2 Rd4 32.Rb1 Rd5 33.f4 
1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.23"]
[Round "4"]
[White "Szily, Jozsef"]
[Black "Bilek, Istvan"]
[Result "1/2-1/2"]
[WhiteElo "2390"]
[BlackElo "2490"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.23"]
[Round "4"]
[White "Baretic, Dragoljub"]
[Black "Filip, Miroslav"]
[Result "0-1"]
[BlackElo "2510"]
[ECO "B41"]
[EventDate "1971.09.20"]
[PlyCount "58"]
[Source "Perpetual Check"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Be3 Nf6 6.Nd2 Nc6 7.f4 Qc7 8.g3 d6 
9.Bg2 Nxd4 10.Bxd4 e5 11.Bc3 b5 12.Qe2 Be7 13.O-O-O O-O 14.Nf3 Bg4 15.h3 
Bxf3 16.Bxf3 Rab8 17.Qd2 Rfc8 18.Bb4 Qa7 19.Rhe1 Rc6 20.Re3 a5 21.Ra3 Ra6 
22.Rxa5 Rxa5 23.Bxa5 b4 24.Bxb4 Rxb4 25.Qxb4 Qe3+ 26.Rd2 Qxf3 27.Qb8+ Bf8 
28.Rxd6 Qe3+ 29.Kd1 Nxe4 0-1

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.23"]
[Round "4"]
[White "Planinc, Albin"]
[Black "Ivkov, Borislav"]
[Result "1/2-1/2"]
[WhiteElo "2510"]
[BlackElo "2560"]
[ECO "A01"]
[EventDate "1971.09.20"]
[PlyCount "122"]
[Source "Perpetual Check"]

1.b3 e5 2.Bb2 Nc6 3.c4 Nf6 4.e3 g6 5.Nf3 d6 6.d4 exd4 7.Nxd4 Nxd4 8.Qxd4 
Bg7 9.Nc3 O-O 10.Be2 Re8 11.Nd5 Nh5 12.Qd2 Nf6 13.Qd4 Nh5 14.Qd2 Nf6 15.
Bf3 Nd7 16.Bxg7 Kxg7 17.O-O Ne5 18.Be2 Be6 19.Rfd1 a5 20.Rac1 b6 21.Nc3 
Bd7 22.f4 Ng4 23.Bf3 Rc8 24.Re1 Nf6 25.h3 Be6 26.Nb5 Bd7 27.Nc3 Be6 28.
Rcd1 Nd7 29.Nb5 Rb8 30.Nd4 Qh4 31.Bc6 Rbd8 32.e4 f6 33.Nb5 Rc8 34.Bb7 Nc5 
35.Bxc8 Bxc8 36.Qf2 Qxf2+ 37.Kxf2 Kf7 38.g4 Ke7 39.f5 Bd7 40.Nd4 Rg8 41.a3
Ra8 42.Re3 Be8 43.b4 axb4 44.axb4 Ra2+ 45.Kg3 Na6 46.Rb1 Bf7 47.b5 Nc5 48.
Nc6+ Kf8 49.Nb4 Ra4 50.Nd5 Nxe4+ 51.Kg2 Rxc4 52.Rd1 gxf5 53.gxf5 Rc2+ 54.
Kg1 Bh5 55.Ra1 Nd2 56.Ra8+ Kg7 57.Rg3+ Kh6 58.Nxf6 Nf3+ 59.Kf1 Nh2+ 60.Kg1
Nf3+ 61.Kf1 Nh2+ 1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.23"]
[Round "4"]
[White "Mecking, Henrique"]
[Black "Deze, Anton"]
[Result "1-0"]
[WhiteElo "2540"]
[BlackElo "2400"]
[ECO "B75"]
[EventDate "1971.09.20"]
[PlyCount "113"]
[Source "Perpetual Check"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Be3 Nf6 7.Bc4 d6 8.f3 
Qb6 9.Nf5 Qxb2 10.Nxg7+ Kf8 11.Nd5 Nxd5 12.Bxd5 Kxg7 13.O-O Qc3 14.Qc1 h5 
15.Rb1 f6 16.Rb3 Qa5 17.Qb2 Qc7 18.f4 Rf8 19.f5 Ne5 20.fxg6 Qd8 21.c4 Bd7 
22.Qc1 Ng4 23.Bf4 Rh8 24.Rxb7 Rb8 25.Qb2 Rxb7 26.Qxb7 Qb6+ 27.Qxb6 axb6 
28.Rb1 e6 29.Bb7 Rb8 30.Ba6 Ne5 31.Be3 Bc8 32.Bb5 Ng4 33.Bf4 e5 34.Bd2 Bb7
35.Re1 Kxg6 36.Bb4 Rd8 37.Rd1 Bxe4 38.Rxd6 Ra8 39.a4 Bc2 40.Bc6 Rc8 41.Bb5
Bxa4 42.Bxa4 Rxc4 43.Be8+ Kg7 44.Rd7+ Kh8 45.Bd2 e4 46.Bxh5 Ne5 47.Rd8+ 
Kg7 48.Be2 Rc2 49.Kf2 b5 50.Bxb5 Ng4+ 51.Kg3 f5 52.Be2 Ne5 53.Bd1 Rc5 54.
h4 Nc4 55.Bc3+ Kg6 56.Rh8 Rd5 57.Bh5# 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.23"]
[Round "4"]
[White "Ljubojevic, Ljubomir"]
[Black "Janosevic, Dragoljub"]
[Result "1-0"]
[WhiteElo "2510"]
[BlackElo "2450"]
[ECO "B44"]
[EventDate "1971.09.20"]
[PlyCount "69"]
[Source "Perpetual Check"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e6 5.Nb5 d6 6.c4 Nf6 7.N5c3 Be7 8.Be2 
O-O 9.O-O a6 10.b3 Qa5 11.Bb2 Rd8 12.a3 Bd7 13.Qd3 Ne5 14.Qg3 Ng6 15.b4 
Qe5 16.f4 Qd4+ 17.Kh1 Nxe4 18.Nxe4 Qxe4 19.Nc3 Qc6 20.f5 exf5 21.Nd5 Bh4 
22.Qc3 Ne5 23.Qd4 Bf6 24.Rf3 Be6 25.Nxf6+ gxf6 26.Qh4 Kf8 27.Qxf6 Nxf3 28.
Bxf3 Qxc4 29.Rc1 Qb5 30.Qh8+ Ke7 31.Rc7+ Bd7 32.Qf6+ Ke8 33.h3 Rac8 34.
Qh8+ Ke7 35.Bf6+ 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.25"]
[Round "5"]
[White "Janosevic, Dragoljub"]
[Black "Ciocaltea, Victor"]
[Result "1/2-1/2"]
[WhiteElo "2450"]
[BlackElo "2460"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.25"]
[Round "5"]
[White "Deze, Anton"]
[Black "Ljubojevic, Ljubomir"]
[Result "1/2-1/2"]
[WhiteElo "2400"]
[BlackElo "2510"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.25"]
[Round "5"]
[White "Ivkov, Borislav"]
[Black "Mecking, Henrique"]
[Result "1/2-1/2"]
[WhiteElo "2560"]
[BlackElo "2540"]
[ECO "B52"]
[EventDate "1971.09.20"]
[PlyCount "90"]
[Source "Perpetual Check"]

1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.Bxd7+ Qxd7 5.O-O Nc6 6.c3 Nf6 7.d4 Nxe4 8.d5
Nb8 9.Re1 Nf6 10.Bg5 Na6 11.c4 Nc7 12.Nc3 e6 13.dxe6 fxe6 14.Nd5 Ncxd5 15.
cxd5 e5 16.Rxe5+ dxe5 17.Nxe5 Qf5 18.Qa4+ Kd8 19.Nf7+ Kc8 20.Re1 Qd7 21.
Qxd7+ Kxd7 22.Nxh8 Re8 23.Rd1 Re2 24.d6 Ne4 25.Be3 Rxb2 26.Nf7 Nc3 27.Ne5+
Ke6 28.d7 Be7 29.Re1 Kxe5 30.Bxc5+ Re2 31.Rxe2+ Nxe2+ 32.Kf1 Ke6 33.Bxe7 
Kxe7 34.Kxe2 Kxd7 35.Kd3 Kd6 36.Kd4 b5 37.f4 g6 38.g4 h6 39.h3 a6 40.a3 a5
41.Ke4 Ke6 42.Kd4 Kd6 43.Ke4 Ke6 44.Kd4 Kd6 45.Ke4 Ke6 1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.25"]
[Round "5"]
[White "Filip, Miroslav"]
[Black "Planinc, Albin"]
[Result "1-0"]
[WhiteElo "2510"]
[BlackElo "2510"]
[ECO "A42"]
[EventDate "1971.09.20"]
[PlyCount "67"]
[Source "Perpetual Check"]

1.c4 c5 2.Nf3 g6 3.d4 Bg7 4.e4 d6 5.Nc3 Nc6 6.dxc5 Qa5 7.cxd6 Bxc3+ 8.bxc3
Nf6 9.dxe7 Nxe4 10.Qc2 Nxe7 11.Bd3 Nc5 12.O-O O-O 13.Nd4 Nxd3 14.Qxd3 Nc6 
15.Bh6 Rd8 16.Qf3 Nxd4 17.cxd4 Qf5 18.Qe3 b6 19.Rfe1 Ba6 20.Rac1 f6 21.Qa3
Bb7 22.Re7 Rd7 23.Rce1 g5 24.h3 Rad8 25.Re8+ Rxe8 26.Rxe8+ Kf7 27.Rf8+ Kg6
28.Rg8+ Kf7 29.d5 Bxd5 30.cxd5 Qxd5 31.Rg7+ Ke6 32.Rxd7 Qxd7 33.Bf8 a5 34.
Qb3+ 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.25"]
[Round "5"]
[White "Bilek, Istvan"]
[Black "Baretic, Dragoljub"]
[Result "1-0"]
[WhiteElo "2490"]
[EventDate "1971.09.20"]

1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.25"]
[Round "5"]
[White "Portisch, Lajos"]
[Black "Szily, Jozsef"]
[Result "1-0"]
[WhiteElo "2630"]
[BlackElo "2390"]
[ECO "D66"]
[EventDate "1971.09.20"]
[PlyCount "45"]
[Source "Perpetual Check"]

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.Bg5 Be7 5.e3 h6 6.Bh4 O-O 7.Rc1 c6 8.Nf3 Nbd7 
9.Bd3 b6 10.O-O Bb7 11.Qe2 Ne8 12.Bg3 f5 13.cxd5 exd5 14.Ba6 Bxa6 15.Qxa6 
Nd6 16.Ne2 Qc8 17.Qa3 c5 18.Nf4 Qc6 19.dxc5 bxc5 20.Nd4 Qb7 21.Ng6 Nc4 22.
Nxe7+ Kf7 23.Ndxf5 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.25"]
[Round "5"]
[White "Spiridonov, Nikola"]
[Black "Joksic, Sinisa"]
[Result "1/2-1/2"]
[WhiteElo "2450"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.25"]
[Round "5"]
[White "Radulov, Ivan"]
[Black "Buljovcic, Ivan"]
[Result "1-0"]
[WhiteElo "2485"]
[BlackElo "2450"]
[ECO "B86"]
[EventDate "1971.09.20"]
[PlyCount "51"]
[Source "Perpetual Check"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 Be7 7.Bb3 O-O 8.Qe2 
Nbd7 9.g4 Nc5 10.g5 Nfd7 11.Rg1 a6 12.f4 Re8 13.Be3 Bf8 14.f5 b5 15.g6 
hxg6 16.fxg6 fxg6 17.O-O-O Ne5 18.Nf3 Nxb3+ 19.axb3 Nxf3 20.Qxf3 Qf6 21.
Qg3 g5 22.Rdf1 Qg6 23.h4 g4 24.h5 Qh7 25.Qf2 Qxh5 26.Rh1 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.26"]
[Round "6"]
[White "Ciocaltea, Victor"]
[Black "Buljovcic, Ivan"]
[Result "1/2-1/2"]
[WhiteElo "2460"]
[BlackElo "2450"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.26"]
[Round "6"]
[White "Joksic, Sinisa"]
[Black "Radulov, Ivan"]
[Result "1/2-1/2"]
[BlackElo "2485"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.26"]
[Round "6"]
[White "Szily, Jozsef"]
[Black "Spiridonov, Nikola"]
[Result "0-1"]
[WhiteElo "2390"]
[BlackElo "2450"]
[ECO "B03"]
[EventDate "1971.09.20"]
[PlyCount "84"]
[Source "Perpetual Check"]

1.e4 Nf6 2.e5 Nd5 3.c4 Nb6 4.d4 d6 5.f4 Bf5 6.Nc3 e6 7.Be3 dxe5 8.fxe5 Bb4
9.a3 Bxc3+ 10.bxc3 c5 11.Nf3 Nc6 12.Be2 O-O 13.O-O Rc8 14.Rc1 h6 15.Qe1 
Na5 16.Nd2 Bg6 17.Qg3 Qe7 18.h4 Kh8 19.h5 Bh7 20.Bf4 Rfd8 21.Be3 Rd7 22.d5
exd5 23.Bg4 Naxc4 24.Nxc4 Nxc4 25.Rxf7 Qxf7 26.e6 Qe7 27.exd7 Rd8 28.Bf4 
Rxd7 29.Bxd7 Qxd7 30.Re1 Be4 31.Bc1 b6 32.Rf1 Qe8 33.Qh4 Kh7 34.g4 Qe5 35.
g5 hxg5 36.Bxg5 Nd6 37.Bf4 Qe6 38.h6 Nf5 39.Qh3 gxh6 40.Rf2 Qg6+ 41.Kf1 
Ng7 42.Qd7 Bd3+ 0-1

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.26"]
[Round "6"]
[White "Baretic, Dragoljub"]
[Black "Portisch, Lajos"]
[Result "0-1"]
[BlackElo "2630"]
[ECO "B95"]
[EventDate "1971.09.20"]
[PlyCount "66"]
[Source "Perpetual Check"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.Qf3 Nbd7 8.Be2 
Be7 9.O-O O-O 10.Rad1 Qc7 11.Qg3 Kh8 12.f4 b5 13.Bf3 Bb7 14.e5 dxe5 15.
fxe5 Ng8 16.Kh1 Bxg5 17.Qxg5 b4 18.Nce2 Bxf3 19.Nxf3 Qxc2 20.Nf4 h6 21.Qh4
Qc7 22.Ng5 Nc5 23.Qh5 g6 24.Nxf7+ Rxf7 25.Nxg6+ Kh7 26.Kg1 Ne4 27.Rf3 Rd8 
28.Rdf1 Rxf3 29.gxf3 Qg7 30.Kh1 Qxg6 31.Qh4 Rd2 32.Qxe4 Qxe4 33.fxe4 Rxb2 
0-1

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.26"]
[Round "6"]
[White "Planinc, Albin"]
[Black "Bilek, Istvan"]
[Result "0-1"]
[WhiteElo "2510"]
[BlackElo "2490"]
[ECO "A01"]
[EventDate "1971.09.20"]
[PlyCount "46"]
[Source "Perpetual Check"]

1.b3 f5 2.Bb2 Nf6 3.d3 d6 4.e4 e5 5.exf5 Bxf5 6.Ne2 Nc6 7.d4 Be7 8.Ng3 Bg6
9.dxe5 dxe5 10.Qxd8+ Rxd8 11.Bb5 O-O 12.Bxc6 bxc6 13.Nd2 Bxc2 14.Rc1 Bd3 
15.Rxc6 Nd5 16.Nge4 Bb4 17.Nc3 Nf4 18.a3 Ba5 19.g3 Ng2+ 20.Kd1 Rxf2 21.Rc5
Bc2+ 22.Kc1 Rdxd2 23.Rxa5 Bg6 0-1

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.26"]
[Round "6"]
[White "Mecking, Henrique"]
[Black "Filip, Miroslav"]
[Result "1-0"]
[WhiteElo "2540"]
[BlackElo "2510"]
[ECO "B17"]
[EventDate "1971.09.20"]
[PlyCount "131"]
[Source "Perpetual Check"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Nf3 Ngf6 6.Nxf6+ Nxf6 7.Ne5 Be6 8.
Be2 g6 9.c3 Bg7 10.O-O O-O 11.Bd3 c5 12.Nf3 cxd4 13.Nxd4 Bg4 14.Be2 Bxe2 
15.Qxe2 Re8 16.Rd1 Qa5 17.Bf4 Rad8 18.Be5 Rd5 19.Nf3 Rxd1+ 20.Qxd1 Rd8 21.
Qb3 Rd7 22.Re1 Qd5 23.c4 Qd3 24.Qxd3 Rxd3 25.Bd4 e6 26.Bxa7 Nd7 27.b3 b6 
28.Kf1 Rd6 29.Ke2 Kf8 30.a4 Bc3 31.Rb1 Bb4 32.Ne1 Nc5 33.Rd1 Rxd1 34.Kxd1 
Ba5 35.Nf3 Nxb3 36.Ne5 Nc5 37.Nc6 Nb7 38.c5 bxc5 39.Nxa5 Nxa5 40.Bxc5+ Ke8
41.Kc2 Kd7 42.Kc3 Kc6 43.Bb4 Nb7 44.Kd4 Nd8 45.Ke5 Kd7 46.Kf6 Ke8 47.g4 
Nc6 48.Bd6 Kd7 49.Bc5 Ke8 50.g5 Na5 51.Bb4 Nc6 52.Bc3 Ne7 53.Kg7 Nd5 54.
Be5 Nb4 55.a5 Ke7 56.Kxh7 Na6 57.Kg7 Nb4 58.Bf6+ Ke8 59.Bb2 Nd5 60.Ba3 Nc3
61.a6 Nd5 62.a7 Nb6 63.h4 Na8 64.Bb4 Nc7 65.Ba5 Na8 66.Bd8 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.26"]
[Round "6"]
[White "Ljubojevic, Ljubomir"]
[Black "Ivkov, Borislav"]
[Result "1/2-1/2"]
[WhiteElo "2510"]
[BlackElo "2560"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.26"]
[Round "6"]
[White "Janosevic, Dragoljub"]
[Black "Deze, Anton"]
[Result "1-0"]
[WhiteElo "2450"]
[BlackElo "2400"]
[ECO "B61"]
[EventDate "1971.09.20"]
[PlyCount "69"]
[Source "Perpetual Check"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Bg5 Bd7 7.Qd2 Rc8 8.
O-O-O Nxd4 9.Qxd4 Qa5 10.Bd2 a6 11.f3 Qc5 12.Qxc5 Rxc5 13.Be3 Rc8 14.g4 
Bc6 15.g5 Nd7 16.Bh3 e6 17.f4 Be7 18.f5 exf5 19.Bxf5 O-O 20.Nd5 Rfe8 21.
Nxe7+ Rxe7 22.Rxd6 Rce8 23.Rhd1 Nf8 24.Bc5 Bxe4 25.Re1 Bxf5 26.Rxe7 Rc8 
27.b4 g6 28.Rxb7 Ne6 29.h4 a5 30.a3 axb4 31.axb4 Nxc5 32.bxc5 Rxc5 33.Rd8+
Kg7 34.Rbb8 Rxc2+ 35.Kd1 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.27"]
[Round "7"]
[White "Deze, Anton"]
[Black "Ciocaltea, Victor"]
[Result "0-1"]
[WhiteElo "2400"]
[BlackElo "2460"]
[EventDate "1971.09.20"]

0-1

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.27"]
[Round "7"]
[White "Ivkov, Borislav"]
[Black "Janosevic, Dragoljub"]
[Result "1-0"]
[WhiteElo "2560"]
[BlackElo "2450"]
[ECO "A35"]
[EventDate "1971.09.20"]
[PlyCount "73"]
[Source "Perpetual Check"]

1.c4 c5 2.Nf3 Nc6 3.Nc3 g6 4.e3 Bg7 5.d4 cxd4 6.exd4 d6 7.d5 Nb8 8.Be3 Nf6
9.h3 O-O 10.Be2 Nbd7 11.O-O Nc5 12.Re1 Bd7 13.Bf1 Re8 14.Nd4 Nfe4 15.Nxe4 
Nxe4 16.Qc2 Nc5 17.b4 e5 18.Nb5 Bxb5 19.bxc5 Ba6 20.cxd6 Qxd6 21.Rad1 Qd7 
22.c5 Bxf1 23.Kxf1 Rac8 24.Qb3 Bf8 25.Rc1 Rc7 26.a4 Rec8 27.d6 Rc6 28.a5 
Rb8 29.Red1 h6 30.Rb1 Bg7 31.Qb5 a6 32.Qc4 Kh7 33.Rb3 f5 34.f3 Bf6 35.Qd5 
Bg7 36.Rdb1 Bf6 37.Rb4 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.27"]
[Round "7"]
[White "Filip, Miroslav"]
[Black "Ljubojevic, Ljubomir"]
[Result "1/2-1/2"]
[WhiteElo "2510"]
[BlackElo "2510"]
[ECO "A04"]
[EventDate "1971.09.20"]
[PlyCount "76"]
[Source "Perpetual Check"]

1.Nf3 g6 2.d4 Bg7 3.g3 d6 4.Bg2 Nd7 5.O-O e5 6.dxe5 dxe5 7.e4 Nh6 8.b3 O-O
9.Bb2 f6 10.Nbd2 Nf7 11.Nc4 Re8 12.a4 Nc5 13.Qe2 Be6 14.Rfd1 Qc8 15.Nfd2 
Bh3 16.Ne3 h5 17.Bxh3 Qxh3 18.Qf1 Qc8 19.Ba3 Nd7 20.Nf3 Bf8 21.Bxf8 Nxf8 
22.Re1 Ne6 23.Rad1 Kg7 24.Nd5 c6 25.Ne3 Qc7 26.Nc4 Qe7 27.Qe2 Nc5 28.Qe3 
Red8 29.a5 Ne6 30.Rxd8 Qxd8 31.Kg2 Qd7 32.h3 h4 33.Nxh4 Nfg5 34.Qd3 Nd4 
35.Rh1 Rd8 36.Ne3 Qc8 37.Ng4 Nb5 38.Qe3 Rd4 1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.27"]
[Round "7"]
[White "Bilek, Istvan"]
[Black "Mecking, Henrique"]
[Result "1/2-1/2"]
[WhiteElo "2490"]
[BlackElo "2540"]
[ECO "A12"]
[EventDate "1971.09.20"]
[PlyCount "44"]
[Source "Perpetual Check"]

1.Nf3 Nf6 2.g3 d5 3.Bg2 c6 4.b3 Bf5 5.Bb2 e6 6.d3 h6 7.Nbd2 Nbd7 8.O-O Bh7
9.c4 Be7 10.Qc2 O-O 11.Rfc1 Bd6 12.a3 e5 13.e4 dxe4 14.Nxe4 Bc7 15.b4 Nh5 
16.Re1 Re8 17.c5 Qe7 18.Qc4 Nhf6 19.Re2 Bf5 20.Rae1 Nxe4 21.dxe4 Be6 22.
Qc3 a5 1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.27"]
[Round "7"]
[White "Portisch, Lajos"]
[Black "Planinc, Albin"]
[Result "1-0"]
[WhiteElo "2630"]
[BlackElo "2510"]
[ECO "E69"]
[EventDate "1971.09.20"]
[PlyCount "53"]
[Source "Perpetual Check"]

1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.c4 O-O 5.d4 d6 6.Nc3 Nbd7 7.O-O e5 8.e4 Re8 
9.h3 exd4 10.Nxd4 Nc5 11.Re1 a5 12.Rb1 c6 13.Bf4 Qb6 14.Nb3 Ne6 15.Bxd6 a4
16.c5 Qa7 17.e5 Nd7 18.Nd2 Nexc5 19.Nde4 Ne6 20.Qf3 Nd4 21.Qf4 Rxe5 22.Ng5
Rxe1+ 23.Rxe1 Nf5 24.Re8+ Bf8 25.Nce4 f6 26.Bxf8 Nxf8 27.Qc7 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.27"]
[Round "7"]
[White "Spiridonov, Nikola"]
[Black "Baretic, Dragoljub"]
[Result "1-0"]
[WhiteElo "2450"]
[EventDate "1971.09.20"]

1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.27"]
[Round "7"]
[White "Radulov, Ivan"]
[Black "Szily, Jozsef"]
[Result "1-0"]
[WhiteElo "2485"]
[BlackElo "2390"]
[ECO "C45"]
[EventDate "1971.09.20"]
[PlyCount "35"]
[Source "Perpetual Check"]

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Bc5 5.Nb3 Be7 6.Nc3 Nf6 7.f4 d6 8.Be3 
Ng4 9.Bg1 f5 10.Qd2 fxe4 11.Nxe4 O-O 12.O-O-O Bf5 13.Nc3 Nf6 14.g3 Qd7 15.
h3 Kh8 16.g4 Ne4 17.Nxe4 Bxe4 18.Nc5 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.27"]
[Round "7"]
[White "Buljovcic, Ivan"]
[Black "Joksic, Sinisa"]
[Result "1/2-1/2"]
[WhiteElo "2450"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.28"]
[Round "8"]
[White "Ciocaltea, Victor"]
[Black "Joksic, Sinisa"]
[Result "1/2-1/2"]
[WhiteElo "2460"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.28"]
[Round "8"]
[White "Szily, Jozsef"]
[Black "Buljovcic, Ivan"]
[Result "1/2-1/2"]
[WhiteElo "2390"]
[BlackElo "2450"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.28"]
[Round "8"]
[White "Baretic, Dragoljub"]
[Black "Radulov, Ivan"]
[Result "1-0"]
[BlackElo "2485"]
[ECO "B61"]
[EventDate "1971.09.20"]
[PlyCount "23"]
[Source "Perpetual Check"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 Bd7 7.Qd2 Nxd4 8.
Qxd4 Qa5 9.f4 Rc8 10.e5 dxe5 11.fxe5 Be6 12.b4 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.28"]
[Round "8"]
[White "Planinc, Albin"]
[Black "Spiridonov, Nikola"]
[Result "1-0"]
[WhiteElo "2510"]
[BlackElo "2450"]
[ECO "A05"]
[EventDate "1971.09.20"]
[PlyCount "61"]
[Source "Perpetual Check"]

1.b3 Nf6 2.Bb2 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 c5 6.c4 d5 7.cxd5 Nxd5 8.Bxg7 
Kxg7 9.O-O Nc6 10.d4 cxd4 11.Nxd4 Nxd4 12.Qxd4+ Nf6 13.Qb2 Qb6 14.Nc3 Be6 
15.Na4 Qb5 16.Qa3 Rfe8 17.Rac1 Rad8 18.Nc5 Bc8 19.Rc4 a6 20.Rfc1 Rd2 21.
Nd3 Be6 22.Rb4 Qf5 23.Rxb7 Rxe2 24.Nf4 Rd2 25.Bh3 Qe4 26.Nxe6+ Kh6 27.Rb4 
Qe2 28.Rh4+ Nh5 29.Qc5 fxe6 30.Bg4 Rc8 31.Rxh5+ 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.28"]
[Round "8"]
[White "Mecking, Henrique"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[WhiteElo "2540"]
[BlackElo "2630"]
[ECO "B26"]
[EventDate "1971.09.20"]
[PlyCount "77"]
[Source "Perpetual Check"]

1.e4 c5 2.Nf3 d6 3.Nc3 e5 4.g3 Nc6 5.Bg2 g6 6.d3 Bg7 7.O-O Nge7 8.Be3 O-O 
9.Qd2 Nd4 10.Bh6 f6 11.Bxg7 Kxg7 12.Nxd4 cxd4 13.Ne2 Bg4 14.f3 Be6 15.c3 
Qa5 16.Qe1 dxc3 17.bxc3 Rac8 18.Qd2 Rc7 19.Qb2 d5 20.f4 dxe4 21.Bxe4 Bf5 
22.fxe5 fxe5 23.Bxf5 Nxf5 24.d4 Rcf7 25.dxe5 Qxe5 26.Qd2 Rc8 27.Rf2 Qe3 
28.Rd1 Rcc7 29.Qxe3 Nxe3 30.Rd3 Rfe7 31.Nf4 Ng4 32.Rfd2 Nf6 33.Kg2 Rc6 34.
Rd6 Rxd6 35.Rxd6 Ne4 36.Rd3 Nc5 37.Rd2 Kf7 38.Kf3 Re1 39.Nd3 1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.28"]
[Round "8"]
[White "Ljubojevic, Ljubomir"]
[Black "Bilek, Istvan"]
[Result "1/2-1/2"]
[WhiteElo "2510"]
[BlackElo "2490"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.28"]
[Round "8"]
[White "Janosevic, Dragoljub"]
[Black "Filip, Miroslav"]
[Result "1/2-1/2"]
[WhiteElo "2450"]
[BlackElo "2510"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.28"]
[Round "8"]
[White "Deze, Anton"]
[Black "Ivkov, Borislav"]
[Result "1/2-1/2"]
[WhiteElo "2400"]
[BlackElo "2560"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.30"]
[Round "9"]
[White "Ivkov, Borislav"]
[Black "Ciocaltea, Victor"]
[Result "1/2-1/2"]
[WhiteElo "2560"]
[BlackElo "2460"]
[ECO "E80"]
[EventDate "1971.09.20"]
[PlyCount "74"]
[Source "Perpetual Check"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 c5 6.dxc5 dxc5 7.Qxd8+ Kxd8 8.Be3 
Nfd7 9.Nge2 Nc6 10.O-O-O b6 11.f4 Ba6 12.b3 e6 13.g3 Ke7 14.Bg2 Rac8 15.e5
Na5 16.Nb5 Bxb5 17.cxb5 f6 18.exf6+ Nxf6 19.Rhe1 Rhd8 20.Rxd8 Rxd8 21.Bd2 
Nd5 22.Bxd5 exd5 23.Bxa5 bxa5 24.Nd4+ Kd6 25.Nc6 Rd7 26.a4 Rc7 27.Re8 c4 
28.bxc4 dxc4 29.Ra8 Kc5 30.Kc2 Bd4 31.Nxa7 Bg1 32.h3 Bh2 33.g4 Bxf4 34.Nc6
Rd7 35.Rc8 Rd2+ 36.Kc3 Rd3+ 37.Kc2 Rd2+ 1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.30"]
[Round "9"]
[White "Filip, Miroslav"]
[Black "Deze, Anton"]
[Result "1-0"]
[WhiteElo "2510"]
[BlackElo "2400"]
[ECO "B36"]
[EventDate "1971.09.20"]
[PlyCount "121"]
[Source "Perpetual Check"]

1.c4 c5 2.Nf3 g6 3.d4 cxd4 4.Nxd4 Nc6 5.e4 Nf6 6.Nc3 d6 7.Be2 Nxd4 8.Qxd4 
Bg7 9.O-O O-O 10.Qd3 Nd7 11.Bd2 Nc5 12.Qe3 a6 13.Rac1 Ne6 14.b3 Bd7 15.Nd5
Nd4 16.Bc3 Nxe2+ 17.Qxe2 Bxc3 18.Nxc3 Be6 19.f4 Bd7 20.f5 Bc6 21.Kh1 b5 
22.Qe3 bxc4 23.bxc4 Rb8 24.Nd5 Bxd5 25.exd5 Rb7 26.Qh6 Qb6 27.Rf3 Qb2 28.
f6 exf6 29.Rh3 Rfb8 30.Qxh7+ Kf8 31.Qh6+ Ke8 32.Re1+ Re7 33.Rhe3 Rxe3 34.
Qxe3+ Kf8 35.Qe7+ Kg7 36.Qxd6 Qf2 37.Qg3 Qxg3 38.hxg3 Rc8 39.Rc1 f5 40.d6 
Kf6 41.c5 Ke6 42.Re1+ Kd5 43.Kg1 Rd8 44.Rc1 Kc6 45.Kf2 Re8 46.Rc3 a5 47.
Kf3 f6 48.g4 fxg4+ 49.Kxg4 Re4+ 50.Kf3 Re8 51.Kf4 Re5 52.Rd3 Re8 53.g4 Rd8
54.Rc3 Rh8 55.Rc2 Re8 56.Rc4 Re5 57.Rd4 g5+ 58.Kf3 Re8 59.d7 Rd8 60.Ke4 
Kxc5 61.Rd2 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.30"]
[Round "9"]
[White "Bilek, Istvan"]
[Black "Janosevic, Dragoljub"]
[Result "1/2-1/2"]
[WhiteElo "2490"]
[BlackElo "2450"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.30"]
[Round "9"]
[White "Portisch, Lajos"]
[Black "Ljubojevic, Ljubomir"]
[Result "1-0"]
[WhiteElo "2630"]
[BlackElo "2510"]
[ECO "A40"]
[EventDate "1971.09.20"]
[PlyCount "55"]
[Source "Perpetual Check"]

1.d4 b5 2.e4 Bb7 3.f3 a6 4.Be3 e6 5.Nd2 d5 6.Bd3 Nf6 7.e5 Nfd7 8.f4 c5 9.
c3 Nc6 10.Ndf3 Nb6 11.Ne2 Nc4 12.Bc1 cxd4 13.Nexd4 b4 14.b3 N4a5 15.Bd2 
bxc3 16.Bxc3 Nxd4 17.Nxd4 Rc8 18.Qd2 Rxc3 19.Qxc3 Qb6 20.Ke2 Bb4 21.Bb5+ 
Qxb5+ 22.Nxb5 Bxc3 23.Nxc3 d4 24.Na4 O-O 25.Rhd1 Rd8 26.Kf2 f6 27.Nc5 fxe5
28.b4 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.30"]
[Round "9"]
[White "Spiridonov, Nikola"]
[Black "Mecking, Henrique"]
[Result "0-1"]
[WhiteElo "2450"]
[BlackElo "2540"]
[ECO "A05"]
[EventDate "1971.09.20"]
[PlyCount "72"]
[Source "Perpetual Check"]

1.Nf3 Nf6 2.g3 g6 3.b4 Bg7 4.Bb2 O-O 5.Bg2 c6 6.O-O a5 7.a3 axb4 8.axb4 
Rxa1 9.Bxa1 Qb6 10.c3 d5 11.d3 Nbd7 12.Qa4 e5 13.Nfd2 Re8 14.e4 Bf8 15.Na3
Qc7 16.c4 d4 17.c5 b6 18.cxb6 Nxb6 19.Qa5 Be6 20.Nac4 Nfd7 21.Nxb6 Nxb6 
22.f4 f6 23.f5 Bf7 24.fxg6 hxg6 25.Qa3 Ra8 26.Qc1 Bxb4 27.Nf3 Nd7 28.Bh3 
Nc5 29.Qb1 Qa5 30.Nxd4 exd4 31.Bxd4 Bc3 32.Bxf6 Bxf6 33.Rxf6 Qc3 34.Rf1 
Nb3 35.Qe1 Nd2 36.Bg2 Qa5 0-1

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.30"]
[Round "9"]
[White "Radulov, Ivan"]
[Black "Planinc, Albin"]
[Result "1/2-1/2"]
[WhiteElo "2485"]
[BlackElo "2510"]
[ECO "C47"]
[EventDate "1971.09.20"]
[PlyCount "104"]
[Source "Perpetual Check"]

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nxd4 Bb4 6.Nxc6 bxc6 7.Bd3 O-O 8.
O-O Re8 9.Qf3 Bd6 10.Bf4 Bxf4 11.Qxf4 d6 12.Rad1 Qe7 13.Rfe1 Rb8 14.b3 Ng4
15.Qg3 Qf6 16.Be2 Ne5 17.f4 Nd7 18.Bc4 Nb6 19.e5 dxe5 20.fxe5 Qg6 21.e6 
Bxe6 22.Qxg6 hxg6 23.Bxe6 Rxe6 24.Rxe6 fxe6 25.Ne4 e5 26.c4 a5 27.Kf2 Kf7 
28.Rd3 a4 29.Rf3+ Ke8 30.Rg3 Kf7 31.Ng5+ Ke8 32.Nf3 axb3 33.axb3 Nd7 34.
Rxg6 Rxb3 35.Rxc6 e4 36.Re6+ Kf8 37.Rxe4 Nf6 38.Re6 Rc3 39.Ne5 Ne4+ 40.Ke2
Nd6 41.c5 Nb5 42.Rg6 Rb3 43.Nd3 Nc3+ 44.Ke1 Ne4 45.Ke2 Nc3+ 46.Kf1 Na4 47.
Nf4 Nxc5 48.Nh5 Nd3 49.Rxg7 Rb1+ 50.Ke2 Nf4+ 51.Kf3 Nxh5 52.Rxc7 Nf6 
1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.30"]
[Round "9"]
[White "Buljovcic, Ivan"]
[Black "Baretic, Dragoljub"]
[Result "1/2-1/2"]
[WhiteElo "2450"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.09.30"]
[Round "9"]
[White "Joksic, Sinisa"]
[Black "Szily, Jozsef"]
[Result "0-1"]
[BlackElo "2390"]
[EventDate "1971.09.20"]

0-1

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.01"]
[Round "10"]
[White "Ciocaltea, Victor"]
[Black "Szily, Jozsef"]
[Result "1-0"]
[WhiteElo "2460"]
[BlackElo "2390"]
[EventDate "1971.09.20"]

1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.01"]
[Round "10"]
[White "Baretic, Dragoljub"]
[Black "Joksic, Sinisa"]
[Result "1/2-1/2"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.01"]
[Round "10"]
[White "Planinc, Albin"]
[Black "Buljovcic, Ivan"]
[Result "1/2-1/2"]
[WhiteElo "2510"]
[BlackElo "2450"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.01"]
[Round "10"]
[White "Mecking, Henrique"]
[Black "Radulov, Ivan"]
[Result "1-0"]
[WhiteElo "2540"]
[BlackElo "2485"]
[ECO "B61"]
[EventDate "1971.09.20"]
[PlyCount "93"]
[Source "Perpetual Check"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Bg5 Bd7 7.Qd2 Rc8 8.
O-O-O Nxd4 9.Qxd4 Qa5 10.Bd2 a6 11.f3 Qc5 12.Qxc5 Rxc5 13.Be3 Rc7 14.g4 
Be6 15.Bd4 Nd7 16.h4 f6 17.g5 Bf7 18.Nd5 Rc6 19.Bc3 Nb6 20.Nb4 Rc7 21.Bd4 
Nd7 22.Nd5 Rc6 23.f4 e5 24.Be3 Be7 25.Bh3 Nc5 26.gxf6 gxf6 27.Bf5 Bh5 28.
Rdg1 Bf3 29.Nxe7 Kxe7 30.Rg7+ Kf8 31.Rhg1 Bxe4 32.Bxe4 Nxe4 33.Rxb7 Rc8 
34.Rgg7 h5 35.fxe5 dxe5 36.Rbf7+ Ke8 37.b4 Rc3 38.Ra7 Kf8 39.Rgf7+ Kg8 40.
Kb2 Rc8 41.Kc1 Rc6 42.Rfd7 Rc8 43.a3 Kf8 44.Kb2 Rb8 45.Rf7+ Ke8 46.Rae7+ 
Kd8 47.Ba7 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.01"]
[Round "10"]
[White "Ljubojevic, Ljubomir"]
[Black "Spiridonov, Nikola"]
[Result "1-0"]
[WhiteElo "2510"]
[BlackElo "2450"]
[EventDate "1971.09.20"]

1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.01"]
[Round "10"]
[White "Janosevic, Dragoljub"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[WhiteElo "2450"]
[BlackElo "2630"]
[ECO "B93"]
[EventDate "1971.09.20"]
[PlyCount "109"]
[Source "Perpetual Check"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.f4 Qc7 7.Nf3 e5 8.Bd3 b5 
9.O-O Nbd7 10.Qe1 Bb7 11.Bd2 g6 12.Kh1 Bg7 13.fxe5 dxe5 14.b4 O-O 15.a4 
bxa4 16.Rxa4 Rfc8 17.Ra5 h6 18.Na4 Nh5 19.Qf2 Rf8 20.Nc5 Nxc5 21.Qxc5 Qxc5
22.Rxc5 Rac8 23.Bc3 Rxc5 24.bxc5 Nf6 25.Nd2 Nd7 26.Bb4 Rc8 27.Nb3 Nf6 28.
Na5 Bxe4 29.Bxa6 Ra8 30.Bc4 Nd5 31.c3 Nf4 32.Kg1 Bf8 33.c6 Rxa5 34.Bxa5 
Bc5+ 35.Rf2 Bxc6 36.Bc7 Bxg2 37.Bxe5 Nh3+ 38.Kxg2 Nxf2 39.Kf3 Kf8 40.h4 h5
41.Bd6+ Bxd6 42.Kxf2 Be5 43.Kg2 Bxc3 44.Kh3 Be1 45.Bb3 Kg7 46.Bc4 f5 47.
Bb3 Kh6 48.Bd1 Bxh4 49.Kxh4 g5+ 50.Kg3 Kg6 51.Ba4 f4+ 52.Kf3 Kf5 53.Bd7+ 
Ke5 54.Be8 g4+ 55.Kf2 1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.01"]
[Round "10"]
[White "Deze, Anton"]
[Black "Bilek, Istvan"]
[Result "1-0"]
[WhiteElo "2400"]
[BlackElo "2490"]
[ECO "E74"]
[EventDate "1971.09.20"]
[PlyCount "79"]
[Source "Perpetual Check"]

1.d4 Nf6 2.c4 c5 3.d5 d6 4.Nc3 g6 5.e4 Bg7 6.Be2 O-O 7.Bg5 h6 8.Be3 e6 9.
Qd2 exd5 10.exd5 Kh7 11.h3 b5 12.cxb5 a6 13.bxa6 Nxa6 14.Nf3 Rb8 15.O-O 
Re8 16.Rac1 Qa5 17.b3 Nb4 18.Rfe1 Bf5 19.Bf4 Rbd8 20.Bc4 Be4 21.a4 Bxf3 
22.gxf3 Nh5 23.Rxe8 Rxe8 24.Bxd6 Qd8 25.Bxc5 Qh4 26.Be3 Be5 27.Bf1 Nf4 28.
Ne4 Nbxd5 29.Rc5 Rd8 30.Bxf4 Nxf4 31.Qc2 Bd4 32.Rc7 Kg7 33.a5 Rd5 34.a6 
Rg5+ 35.Nxg5 Qxg5+ 36.Kh1 Qe5 37.a7 Qe1 38.Qc4 Qxf2 39.Qxf7+ Kh8 40.Qh7# 
1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.01"]
[Round "10"]
[White "Ivkov, Borislav"]
[Black "Filip, Miroslav"]
[Result "1-0"]
[WhiteElo "2560"]
[BlackElo "2510"]
[ECO "C92"]
[EventDate "1971.09.20"]
[PlyCount "117"]
[Source "Perpetual Check"]

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 Nb8 10.d4 Nbd7 11.Nbd2 Bb7 12.Bc2 Re8 13.a3 Bf8 14.b4 g6 15.Bb2 Bg7 
16.c4 exd4 17.cxb5 axb5 18.Nxd4 c6 19.N4b3 Rc8 20.a4 d5 21.e5 Nh5 22.Nf3 
Qc7 23.Na5 Ba8 24.axb5 cxb5 25.Bd3 Qb8 26.Rc1 Nf4 27.Bf1 Rxc1 28.Qxc1 Ne6 
29.Qa1 d4 30.Nxd4 Nxd4 31.Bxd4 Bxe5 32.Bxe5 Rxe5 33.Rxe5 Nxe5 34.Qc3 Be4 
35.Qd4 Ba8 36.Qc5 Nd7 37.Qxb5 Qxb5 38.Bxb5 Nb6 39.Bc6 Bxc6 40.Nxc6 Kf8 41.
f4 Ke8 42.Kf2 Kd7 43.Ne5+ Ke6 44.Kf3 f6 45.Ng4 Nd5 46.b5 Nb6 47.Ne3 Kd6 
48.Ke4 Kc5 49.f5 Kxb5 50.Ng4 Nd7 51.Nxf6 Nxf6+ 52.Ke5 Nd7+ 53.Kd6 Nf6 54.
Ke6 Nh5 55.f6 Nf4+ 56.Kd7 g5 57.f7 Ng6 58.g4 Kc5 59.Ke8 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.02"]
[Round "11"]
[White "Filip, Miroslav"]
[Black "Ciocaltea, Victor"]
[Result "1-0"]
[WhiteElo "2510"]
[BlackElo "2460"]
[ECO "E62"]
[EventDate "1971.09.20"]
[PlyCount "39"]
[Source "Perpetual Check"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.g3 O-O 5.Bg2 d6 6.Nf3 Nc6 7.O-O Bg4 8.d5 Na5 
9.b3 c5 10.Bb2 Qc8 11.Re1 h6 12.Qd2 b6 13.e4 Bh3 14.e5 dxe5 15.Rxe5 Bxg2 
16.Kxg2 Re8 17.Rae1 Bf8 18.Ne4 Rd8 19.Rxe7 Nh5 20.Re5 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.02"]
[Round "11"]
[White "Bilek, Istvan"]
[Black "Ivkov, Borislav"]
[Result "1/2-1/2"]
[WhiteElo "2490"]
[BlackElo "2560"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.02"]
[Round "11"]
[White "Portisch, Lajos"]
[Black "Deze, Anton"]
[Result "1-0"]
[WhiteElo "2630"]
[BlackElo "2400"]
[ECO "B37"]
[EventDate "1971.09.20"]
[PlyCount "41"]
[Source "Perpetual Check"]

1.c4 c5 2.d4 g6 3.Nf3 cxd4 4.Nxd4 Nc6 5.e4 Nf6 6.Nc3 d6 7.Nc2 Bg7 8.Be2 
Nd7 9.Be3 Bxc3+ 10.bxc3 Qa5 11.Qd2 Nc5 12.f3 Qa4 13.O-O Be6 14.Nb4 Rc8 15.
Nd5 Nd7 16.Qb2 b6 17.c5 bxc5 18.Bb5 Qa5 19.Bxc6 Rxc6 20.Qb7 Bxd5 21.exd5 
1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.02"]
[Round "11"]
[White "Spiridonov, Nikola"]
[Black "Janosevic, Dragoljub"]
[Result "0-1"]
[WhiteElo "2450"]
[BlackElo "2450"]
[EventDate "1971.09.20"]

0-1

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.02"]
[Round "11"]
[White "Radulov, Ivan"]
[Black "Ljubojevic, Ljubomir"]
[Result "1-0"]
[WhiteElo "2485"]
[BlackElo "2510"]
[EventDate "1971.09.20"]

1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.02"]
[Round "11"]
[White "Buljovcic, Ivan"]
[Black "Mecking, Henrique"]
[Result "1/2-1/2"]
[WhiteElo "2450"]
[BlackElo "2540"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.02"]
[Round "11"]
[White "Joksic, Sinisa"]
[Black "Planinc, Albin"]
[Result "0-1"]
[BlackElo "2510"]
[EventDate "1971.09.20"]

0-1

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.02"]
[Round "11"]
[White "Szily, Jozsef"]
[Black "Baretic, Dragoljub"]
[Result "1/2-1/2"]
[WhiteElo "2390"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.03"]
[Round "12"]
[White "Ciocaltea, Victor"]
[Black "Baretic, Dragoljub"]
[Result "1-0"]
[WhiteElo "2460"]
[ECO "C44"]
[EventDate "1971.09.20"]
[PlyCount "97"]
[Source "Perpetual Check"]

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.c3 dxc3 5.Nxc3 Bb4 6.Bc4 Qf6 7.O-O Bxc3 8.
bxc3 Ne5 9.Nxe5 Qxe5 10.Qb3 Qe7 11.Ba3 c5 12.Rad1 Nh6 13.Rd5 b6 14.f3 O-O 
15.Rfd1 Kh8 16.Bc1 Ng8 17.Bf4 Qd8 18.Bd6 Re8 19.R5d2 Re6 20.Bxe6 fxe6 21.
c4 Qf6 22.a4 Bb7 23.a5 Bc6 24.axb6 axb6 25.Qxb6 Ne7 26.Qxc5 Ng6 27.Bg3 h6 
28.Qd4 Qg5 29.Rb2 Kh7 30.Rf2 e5 31.Qd2 Qe7 32.Qe3 Rf8 33.c5 h5 34.h3 h4 
35.Bh2 Nf4 36.Bxf4 Rxf4 37.Rd6 Qg5 38.Rfd2 Bxe4 39.Rxd7 Bxf3 40.Qe1 Bc6 
41.R7d6 Ba8 42.c6 Rc4 43.Rc2 Rf4 44.c7 Rf8 45.Qd2 Qf5 46.Qf2 Qxf2+ 47.Rxf2
Rc8 48.Rc2 Be4 49.Rc4 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.03"]
[Round "12"]
[White "Planinc, Albin"]
[Black "Szily, Jozsef"]
[Result "1-0"]
[WhiteElo "2510"]
[BlackElo "2390"]
[EventDate "1971.09.20"]

1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.03"]
[Round "12"]
[White "Mecking, Henrique"]
[Black "Joksic, Sinisa"]
[Result "1-0"]
[WhiteElo "2540"]
[ECO "B79"]
[EventDate "1971.09.20"]
[PlyCount "49"]
[Source "Perpetual Check"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 O-O 8.Qd2 
Nc6 9.Bc4 Bd7 10.O-O-O Ne5 11.Bb3 Qa5 12.h4 Rfc8 13.h5 Nxh5 14.Bh6 Nd3+ 
15.Kb1 Nxb2 16.Kxb2 Bxh6 17.Qxh6 Rxc3 18.g4 Nf6 19.e5 Rxb3+ 20.axb3 dxe5 
21.Ne2 Be6 22.Nc3 e4 23.Nxe4 Rc8 24.Kb1 Rc6 25.g5 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.03"]
[Round "12"]
[White "Ljubojevic, Ljubomir"]
[Black "Buljovcic, Ivan"]
[Result "1-0"]
[WhiteElo "2510"]
[BlackElo "2450"]
[EventDate "1971.09.20"]

1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.03"]
[Round "12"]
[White "Janosevic, Dragoljub"]
[Black "Radulov, Ivan"]
[Result "0-1"]
[WhiteElo "2450"]
[BlackElo "2485"]
[ECO "C43"]
[EventDate "1971.09.20"]
[PlyCount "106"]
[Source "Perpetual Check"]

1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Ne4 5.Qxd4 d5 6.exd6 Nxd6 7.Nc3 Nc6 8.Qf4
Qd7 9.Bd3 Qg4 10.h3 Qxf4 11.Bxf4 Bd7 12.O-O-O O-O-O 13.Ng5 h6 14.Nge4 Nxe4
15.Bxe4 Bc5 16.f3 Rhe8 17.Rd5 Bd4 18.Nb5 Bb6 19.a4 a6 20.Nc3 Nb4 21.Rdd1 
f5 22.Rxd7 Kxd7 23.Bxf5+ Ke7 24.Bg6 Rf8 25.Be5 Nc6 26.Bg3 Kf6 27.Be4 Nb4 
28.Bxb7 c6 29.Ne4+ Kg6 30.c3 Rf7 31.Nd6 Rxd6 32.Bxd6 Nd3+ 33.Kc2 Rxb7 34.
b4 Rd7 35.Bg3 c5 36.a5 Ba7 37.Rb1 c4 38.b5 axb5 39.Rxb5 Re7 40.Kd1 Rd7 41.
Kc2 Be3 42.Rb8 Nf4 43.Bxf4 Bxf4 44.Rb6+ Rd6 45.Rxd6+ Bxd6 46.a6 Bc5 47.h4 
Kf5 48.g3 Ke5 49.Kd2 Kd5 50.Ke2 Kc6 51.f4 Kb5 52.Kf3 Kxa6 53.Ke4 Kb5 0-1

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.03"]
[Round "12"]
[White "Deze, Anton"]
[Black "Spiridonov, Nikola"]
[Result "1/2-1/2"]
[WhiteElo "2400"]
[BlackElo "2450"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.03"]
[Round "12"]
[White "Ivkov, Borislav"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[WhiteElo "2560"]
[BlackElo "2630"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.03"]
[Round "12"]
[White "Filip, Miroslav"]
[Black "Bilek, Istvan"]
[Result "1/2-1/2"]
[WhiteElo "2510"]
[BlackElo "2490"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.04"]
[Round "13"]
[White "Bilek, Istvan"]
[Black "Ciocaltea, Victor"]
[Result "1/2-1/2"]
[WhiteElo "2490"]
[BlackElo "2460"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.04"]
[Round "13"]
[White "Portisch, Lajos"]
[Black "Filip, Miroslav"]
[Result "1-0"]
[WhiteElo "2630"]
[BlackElo "2510"]
[ECO "D10"]
[EventDate "1971.09.20"]
[PlyCount "119"]
[Source "Perpetual Check"]

1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.cxd5 cxd5 5.Bf4 e6 6.e3 Qb6 7.Rb1 Bd6 8.Bxd6 
Qxd6 9.f4 O-O 10.Bd3 b6 11.Nf3 Ba6 12.O-O Bxd3 13.Qxd3 a6 14.Rbc1 Nbd7 15.
Ne5 b5 16.Rc2 Rfc8 17.Rfc1 Nb6 18.Nd1 Ne4 19.Nf2 Nxf2 20.Kxf2 f6 21.Rxc8+ 
Rxc8 22.Rxc8+ Nxc8 23.Qc3 Nb6 24.Nd3 Kf7 25.b3 Ke7 26.h3 Nd7 27.Kg1 Kd8 
28.Nc5 Nxc5 29.dxc5 Qc6 30.b4 Ke7 31.Qd3 g6 32.Qd4 h5 33.g4 hxg4 34.hxg4 
Kf7 35.g5 e5 36.fxe5 fxg5 37.Qg4 a5 38.a3 axb4 39.axb4 Qa8 40.Qxg5 Qa1+ 
41.Kg2 Qb2+ 42.Kh3 Qb1 43.Qf6+ Kg8 44.c6 Qh1+ 45.Kg4 Qg2+ 46.Kh4 Qh2+ 47.
Kg5 Qh5+ 48.Kf4 Qh2+ 49.Kf3 Qh1+ 50.Kf2 Qh2+ 51.Ke1 Qg1+ 52.Kd2 Qg2+ 53.
Kc3 Qe4 54.Qd8+ Kg7 55.Qe7+ Kg8 56.Qc5 Qxe5+ 57.Kb3 Qe4 58.c7 Qb1+ 59.Kc3 
Qa1+ 60.Kd2 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.04"]
[Round "13"]
[White "Spiridonov, Nikola"]
[Black "Ivkov, Borislav"]
[Result "1/2-1/2"]
[WhiteElo "2450"]
[BlackElo "2560"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.04"]
[Round "13"]
[White "Radulov, Ivan"]
[Black "Deze, Anton"]
[Result "1-0"]
[WhiteElo "2485"]
[BlackElo "2400"]
[ECO "B34"]
[EventDate "1971.09.20"]
[PlyCount "83"]
[Source "Perpetual Check"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Be3 Nf6 7.Be2 O-O 8.O-O 
d5 9.exd5 Nb4 10.d6 Qxd6 11.Ncb5 Qb8 12.c4 a6 13.Nc3 e5 14.Nf3 Bf5 15.Bc5 
Rd8 16.Qb3 a5 17.Rad1 Bc2 18.Rxd8+ Qxd8 19.Qa3 Nc6 20.Rc1 Bf5 21.Rd1 Nd7 
22.Be3 e4 23.Nd2 Bxc3 24.Qxc3 Qh4 25.h3 Nde5 26.f4 Nd3 27.Nxe4 Bxe4 28.
Bxd3 Rd8 29.Kh2 Nb4 30.Be2 Rxd1 31.Bxd1 Qd8 32.Be2 Nc6 33.Qd2 Qe7 34.c5 h5
35.Bc4 Qf6 36.Qd7 Bf5 37.Qxb7 Be4 38.Qd7 Kg7 39.Bd2 Nd4 40.Qd6 Qxd6 41.
cxd6 Nc6 42.d7 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.04"]
[Round "13"]
[White "Buljovcic, Ivan"]
[Black "Janosevic, Dragoljub"]
[Result "1/2-1/2"]
[WhiteElo "2450"]
[BlackElo "2450"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.04"]
[Round "13"]
[White "Joksic, Sinisa"]
[Black "Ljubojevic, Ljubomir"]
[Result "1/2-1/2"]
[BlackElo "2510"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.04"]
[Round "13"]
[White "Szily, Jozsef"]
[Black "Mecking, Henrique"]
[Result "1/2-1/2"]
[WhiteElo "2390"]
[BlackElo "2540"]
[ECO "B91"]
[EventDate "1971.09.20"]
[PlyCount "47"]
[Source "Perpetual Check"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.g3 e5 7.Nde2 Be7 8.Bg2 
O-O 9.O-O b5 10.Nd5 Nxd5 11.exd5 Bg4 12.h3 Bh5 13.f4 Bxe2 14.Qxe2 exf4 15.
Bxf4 Bf6 16.c3 Nd7 17.Be3 Be5 18.g4 Nb6 19.Qf2 Nc4 20.Bd4 Bxd4 21.cxd4 Qg5
22.b3 Nb6 23.Rac1 Nxd5 24.Qf5 1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.04"]
[Round "13"]
[White "Baretic, Dragoljub"]
[Black "Planinc, Albin"]
[Result "1-0"]
[BlackElo "2510"]
[EventDate "1971.09.20"]

1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.05"]
[Round "14"]
[White "Ciocaltea, Victor"]
[Black "Planinc, Albin"]
[Result "1-0"]
[WhiteElo "2460"]
[BlackElo "2510"]
[ECO "B06"]
[EventDate "1971.09.20"]
[PlyCount "89"]
[Source "Perpetual Check"]

1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Be3 c6 5.Qd2 b5 6.f3 Nd7 7.Nh3 Bb7 8.Nf2 Qc7 
9.Be2 a6 10.O-O e6 11.Rfd1 h6 12.a4 Ne7 13.Bf1 Kf8 14.Ne2 Kg8 15.b3 Kh7 
16.Rab1 Rad8 17.c4 bxa4 18.bxa4 c5 19.d5 exd5 20.cxd5 Rhe8 21.Ng3 h5 22.
Nh3 Bc8 23.Qc2 Kg8 24.Ng5 Nf8 25.Nh1 Nf5 26.Bf2 Nh6 27.h4 Kh8 28.Ng3 f6 
29.Ne6 Nxe6 30.dxe6 Rxe6 31.Ne2 f5 32.Nf4 fxe4 33.Nxe6 Bxe6 34.Qxe4 Qf7 
35.Rb7 Qf6 36.Re1 Re8 37.Qc6 Qf8 38.Bd3 Rc8 39.Qxa6 Bd5 40.Rbe7 Nf7 41.
Bxg6 Ne5 42.Qxd6 Rd8 43.Qxd8 Qxd8 44.Re8+ Qxe8 45.Bxe8 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.05"]
[Round "14"]
[White "Mecking, Henrique"]
[Black "Baretic, Dragoljub"]
[Result "1-0"]
[WhiteElo "2540"]
[ECO "C61"]
[EventDate "1971.09.20"]
[PlyCount "87"]
[Source "Perpetual Check"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nd4 4.Nxd4 exd4 5.O-O c6 6.Bc4 Nf6 7.Re1 d6 8.c3 
Ng4 9.h3 Ne5 10.Bf1 d3 11.Re3 g5 12.Bxd3 g4 13.Be2 gxh3 14.d4 hxg2 15.Rg3 
Qh4 16.Rxg2 Ng6 17.Bg5 Qxe4 18.Nd2 Qe6 19.Qf1 Kd7 20.Re1 Kc7 21.Bc4 Qd7 
22.Re3 d5 23.Bd3 Bd6 24.c4 f5 25.c5 Bf4 26.Rf3 Bxg5 27.Rxg5 Qg7 28.Bxf5 
Qxd4 29.Qh3 Bxf5 30.Rgxf5 Raf8 31.Rxf8 Rxf8 32.Qxh7+ Kd8 33.Qxg6 Rxf3 34.
Nxf3 Qxc5 35.Qg8+ Kc7 36.Qg7+ Kc8 37.Qh8+ Kc7 38.Qe5+ Kc8 39.Qe6+ Kc7 40.
Qe5+ Kc8 41.Kg2 Qc4 42.Qh8+ Kc7 43.Qg7+ Kc8 44.Ne5 1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.05"]
[Round "14"]
[White "Ljubojevic, Ljubomir"]
[Black "Szily, Jozsef"]
[Result "1-0"]
[WhiteElo "2510"]
[BlackElo "2390"]
[EventDate "1971.09.20"]

1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.05"]
[Round "14"]
[White "Janosevic, Dragoljub"]
[Black "Joksic, Sinisa"]
[Result "1/2-1/2"]
[WhiteElo "2450"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.05"]
[Round "14"]
[White "Deze, Anton"]
[Black "Buljovcic, Ivan"]
[Result "1/2-1/2"]
[WhiteElo "2400"]
[BlackElo "2450"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.05"]
[Round "14"]
[White "Ivkov, Borislav"]
[Black "Radulov, Ivan"]
[Result "1/2-1/2"]
[WhiteElo "2560"]
[BlackElo "2485"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.05"]
[Round "14"]
[White "Filip, Miroslav"]
[Black "Spiridonov, Nikola"]
[Result "1/2-1/2"]
[WhiteElo "2510"]
[BlackElo "2450"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.05"]
[Round "14"]
[White "Bilek, Istvan"]
[Black "Portisch, Lajos"]
[Result "1/2-1/2"]
[WhiteElo "2490"]
[BlackElo "2630"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.07"]
[Round "15"]
[White "Portisch, Lajos"]
[Black "Ciocaltea, Victor"]
[Result "1/2-1/2"]
[WhiteElo "2630"]
[BlackElo "2460"]
[ECO "E62"]
[EventDate "1971.09.20"]
[PlyCount "46"]
[Source "Perpetual Check"]

1.d4 Nf6 2.c4 g6 3.Nf3 Bg7 4.g3 O-O 5.Bg2 d6 6.Nc3 Nc6 7.O-O Bg4 8.d5 Na5 
9.b3 c5 10.Bb2 a6 11.Ne1 Rb8 12.Qd2 b5 13.Nd1 bxc4 14.Bc3 Rb5 15.Nb2 Qc7 
16.Nxc4 Nxc4 17.bxc4 Rb7 18.e4 Rfb8 19.Nd3 Bh3 20.Rae1 Bxg2 21.Kxg2 Nd7 
22.Bxg7 Kxg7 23.f4 Kg8 1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.07"]
[Round "15"]
[White "Spiridonov, Nikola"]
[Black "Bilek, Istvan"]
[Result "1/2-1/2"]
[WhiteElo "2450"]
[BlackElo "2490"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.07"]
[Round "15"]
[White "Radulov, Ivan"]
[Black "Filip, Miroslav"]
[Result "1/2-1/2"]
[WhiteElo "2485"]
[BlackElo "2510"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.07"]
[Round "15"]
[White "Buljovcic, Ivan"]
[Black "Ivkov, Borislav"]
[Result "1/2-1/2"]
[WhiteElo "2450"]
[BlackElo "2560"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.07"]
[Round "15"]
[White "Joksic, Sinisa"]
[Black "Deze, Anton"]
[Result "1-0"]
[BlackElo "2400"]
[EventDate "1971.09.20"]

1-0

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.07"]
[Round "15"]
[White "Szily, Jozsef"]
[Black "Janosevic, Dragoljub"]
[Result "1/2-1/2"]
[WhiteElo "2390"]
[BlackElo "2450"]
[EventDate "1971.09.20"]

1/2-1/2

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.07"]
[Round "15"]
[White "Baretic, Dragoljub"]
[Black "Ljubojevic, Ljubomir"]
[Result "0-1"]
[BlackElo "2510"]
[EventDate "1971.09.20"]

0-1

[Event "4th Boris Kostic mem"]
[Site "Vrsac YUG"]
[Date "1971.10.07"]
[Round "15"]
[White "Planinc, Albin"]
[Black "Mecking, Henrique"]
[Result "1/2-1/2"]
[WhiteElo "2510"]
[BlackElo "2540"]
[ECO "A01"]
[EventDate "1971.09.20"]
[PlyCount "35"]
[Source "Perpetual Check"]

1.b3 e5 2.Bb2 Nc6 3.c4 Nf6 4.e3 Be7 5.Nf3 e4 6.Nd4 Nxd4 7.Bxd4 O-O 8.Nc3 
b6 9.Qc2 Bb7 10.d3 Re8 11.Rd1 Bb4 12.a3 Bxa3 13.Be2 Bc5 14.O-O exd3 15.
Rxd3 Bxd4 16.Rxd4 Qe7 17.Rfd1 Qc5 18.Qb1 1/2-1/2

