[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.16"]
[Round "1"]
[White "Ivkov, Borislav"]
[Black "Knaak, Rainer"]
[WhiteElo "2530"]
[BlackElo "2515"]
[Result "1-0"]
[ECO "B00"]
[EventDate "1974.07.16"]
[PlyCount "81"]

1.e4 Nc6 2.Nf3 d6 3.d4 Bg4 4.c3 Nf6 5.Bb5 a6 6.Ba4 b5 7.Bc2 e5 8.d5 Na5 9.
Nbd2 c5 10.b3 g6 11.h3 Bd7 12.a4 Nh5 13.b4 Nb7 14.O-O Nf4 15.Kh2 cxb4 16.
cxb4 Rc8 17.axb5 axb5 18.Nb3 Bg7 19.Be3 O-O 20.Qd2 g5 21.Ra7 Rb8 22.Ng1 g4
23.g3 Nxh3 24.Nxh3 gxh3 25.Bd3 Qf6 26.Qe2 Qg6 27.Na5 Nxa5 28.bxa5 Bc8 29.
a6 h5 30.Rc1 h4 31.Rg1 Qh7 32.Bxb5 Qxe4 33.Qd3 Qxd3 34.Bxd3 f5 35.gxh4 Rf7
36.Rxf7 Kxf7 37.a7 Ra8 38.Bb5 Bb7 39.Bc6 Bxc6 40.dxc6 d5 41.Bc5 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.16"]
[Round "1"]
[White "Jansa, Vlastimil"]
[Black "Csom, Istvan"]
[WhiteElo "2535"]
[BlackElo "2540"]
[Result "1/2-1/2"]
[ECO "B31"]
[EventDate "1974.07.16"]
[PlyCount "145"]

1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.c3 Nf6 6.Re1 O-O 7.h3 Ne8 8.d4 Qb6 
9.Bxc6 bxc6 10.b3 cxd4 11.cxd4 Nc7 12.Nc3 d6 13.Bg5 Re8 14.Rc1 Nb5 15.Na4 
Qa6 16.Qd2 Bd7 17.e5 Be6 18.Bh6 Bh8 19.Qf4 Bd5 20.Ng5 f6 21.exf6 exf6 22.
Ne4 Bxe4 23.Rxe4 f5 24.Rxe8+ Rxe8 25.Kh1 Bxd4 26.Qf3 Re4 27.g4 Qc8 28.Kg2 
c5 29.Qd3 Qe8 30.gxf5 gxf5 31.Kg1 Re1+ 32.Kg2 Qg6+ 33.Qg3 Rxc1 34.Bxc1 Kf7
35.Bf4 Qxg3+ 36.fxg3 Ke6 37.Kf3 h5 38.g4 fxg4+ 39.hxg4 hxg4+ 40.Kxg4 Be5 
41.Be3 Kd5 42.Kf3 Bd4 43.Bd2 Ke5 44.Bf4+ Kd5 45.Bh6 Be5 46.Ke3 c4 47.Kd2 
cxb3 48.axb3 Nd4 49.Nc3+ Kc6 50.b4 Nb5 51.Ne2 Na3 52.Nc3 Nb5 53.Ne2 Nc7 
54.Kc2 a6 55.Bd2 Ne6 56.Kb3 Kd5 57.Nc1 Nd4+ 58.Ka4 Kc4 59.Ka5 d5 60.Kxa6 
Bd6 61.Kb6 Nf3 62.Kc6 Bf8 63.Bf4 Nd4+ 64.Kd7 Bxb4 65.Bg5 Ba3 66.Be3 Nf5 
67.Bd2 Ng3 68.Ke6 Ne4 69.Bh6 Nc3 70.Kf5 d4 71.Kg4 Bb4 72.Kf3 Nd5 73.Bg7 
1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.16"]
[Round "1"]
[White "Langeweg, Christian"]
[Black "Geller, Efim"]
[WhiteElo "2390"]
[BlackElo "2610"]
[Result "1/2-1/2"]
[ECO "E97"]
[EventDate "1974.07.16"]
[PlyCount "73"]

1.c4 g6 2.d4 Bg7 3.e4 d6 4.Nc3 Nf6 5.Be2 O-O 6.Nf3 e5 7.O-O Nc6 8.d5 Ne7 
9.Nd2 a5 10.a3 Bd7 11.b3 Nc8 12.Rb1 Nb6 13.b4 axb4 14.axb4 Na4 15.Qc2 Nxc3
16.Qxc3 Bh6 17.Bb2 Bxd2 18.Qxd2 Nxe4 19.Qe3 f5 20.f4 exf4 21.Rxf4 Ra2 22.
Bd3 Nf6 23.Qd4 Qe7 24.Rff1 Qg7 25.Ra1 Rxa1 26.Bxa1 Nh5 27.Qa7 Qh6 28.Bc3 
Re8 29.Re1 Rxe1+ 30.Bxe1 Qc1 31.Kf1 Nf4 32.Qb8+ Kf7 33.Qd8 Nxd3 34.Qxd7+ 
Kf6 35.Qe6+ Kg5 36.Qe7+ Kh6 37.Qh4+ 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.16"]
[Round "1"]
[White "Planinc, Albin"]
[Black "Donner, Jan"]
[WhiteElo "2545"]
[BlackElo "2495"]
[Result "1/2-1/2"]
[ECO "B08"]
[EventDate "1974.07.16"]
[PlyCount "80"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Be2 O-O 6.O-O Bg4 7.Be3 Nc6 8.Qd2 e5
9.d5 Ne7 10.Rad1 Bd7 11.Bh6 Ne8 12.Bxg7 Nxg7 13.g3 f6 14.Nh4 f5 15.Ng2 
fxe4 16.Nxe4 Nef5 17.f4 Qe7 18.Rde1 Rae8 19.Bd3 Qd8 20.fxe5 dxe5 21.Qg5 c6
22.Qxd8 Rxd8 23.Nc5 cxd5 24.Nxd7 Rxd7 25.Rxe5 Ne7 26.Nf4 Rfd8 27.Bb5 Nc6 
28.Rxd5 Rxd5 29.Nxd5 Nf5 30.Nc3 Ncd4 31.Bd3 Ne3 32.Rf2 Rf8 33.Be4 b6 34.h3
Rxf2 35.Kxf2 Nexc2 36.Nd5 Kf7 37.h4 h6 38.Ne3 Nxe3 39.Kxe3 Nf5+ 40.Kf4 Nd6
1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.16"]
[Round "1"]
[White "Ree, Hans"]
[Black "Lombardy, William James"]
[WhiteElo "2425"]
[BlackElo "2520"]
[Result "1-0"]
[ECO "D48"]
[EventDate "1974.07.16"]
[PlyCount "81"]

1.Nf3 d5 2.c4 e6 3.d4 Nf6 4.Nc3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 
Bb7 9.O-O a6 10.e4 c5 11.d5 e5 12.b3 Bd6 13.Re1 O-O 14.Bf1 h6 15.Bb2 Re8 
16.a4 b4 17.Nb1 Nxe4 18.Rxe4 f5 19.Re1 e4 20.Nfd2 Nf6 21.h3 Nxd5 22.Nc4 
Bc7 23.Qh5 Qg5 24.Qxg5 hxg5 25.Nbd2 Rad8 26.Rad1 Nc3 27.Rc1 Nd5 28.Rc2 Nf4
29.Ne3 g6 30.Bf6 Rd6 31.Bc4+ Kh7 32.Bxg5 Rd7 33.Rd1 Nd3 34.Bxd3 exd3 35.
Rxc5 Bb6 36.Rcc1 Bd4 37.Nb1 Be5 38.Nc4 Bc7 39.Re1 Re2 40.Nbd2 Be5 41.Nxe5 
1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.16"]
[Round "1"]
[White "Timman, Jan"]
[Black "Kaplan, Julio"]
[WhiteElo "2540"]
[BlackElo "2460"]
[Result "1/2-1/2"]
[ECO "E56"]
[EventDate "1974.07.16"]
[PlyCount "53"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 c5 7.O-O Nc6 8.a3 Ba5 
9.cxd5 exd5 10.dxc5 Bxc3 11.bxc3 Qa5 12.Qc2 Qxc5 13.a4 Re8 14.Ba3 Qa5 15.
Rab1 Qc7 16.c4 dxc4 17.Bxc4 Be6 18.Bxe6 Rxe6 19.Rfd1 Qc8 20.Rb5 h6 21.Nh4 
Re4 22.Nf5 Qe6 23.Nd6 Nd4 24.Qd3 Nxb5 25.Nxe4 Nxa3 26.Nxf6+ Qxf6 27.Qxa3 
1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.16"]
[Round "1"]
[White "Tukmakov, Vladimir"]
[Black "Sosonko, Gennadi"]
[WhiteElo "2570"]
[BlackElo "2450"]
[Result "1-0"]
[ECO "B78"]
[EventDate "1974.07.16"]
[PlyCount "65"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.f3 Bg7 7.Be3 Nc6 8.Qd2 
O-O 9.Bc4 Bd7 10.O-O-O Rc8 11.Bb3 Ne5 12.h4 h5 13.Kb1 Nc4 14.Bxc4 Rxc4 15.
Nb3 Qc7 16.Bd4 Be6 17.g4 Rc8 18.gxh5 Nxh5 19.Rdg1 Kh7 20.Bxg7 Kxg7 21.Nd4 
Qc5 22.Nce2 Ra4 23.b3 Ra6 24.Rg5 Qa3 25.Nc1 Rc5 26.Rhg1 Bd7 27.Nf5+ Bxf5 
28.Rxh5 Bh3 29.Qh6+ Kf6 30.Qf4+ Ke6 31.Rh7 f6 32.Qg3 f5 33.Qxh3 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.16"]
[Round "1"]
[White "Velimirovic, Dragoljub"]
[Black "Ribli, Zoltan"]
[WhiteElo "2530"]
[BlackElo "2525"]
[Result "0-1"]
[ECO "B44"]
[EventDate "1974.07.16"]
[PlyCount "67"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e6 5.c4 Nf6 6.Nc3 Bb4 7.Nxc6 bxc6 8.Bd3
O-O 9.e5 Qa5 10.exf6 Bxc3+ 11.bxc3 Qxc3+ 12.Qd2 Qxa1 13.fxg7 Qxg7 14.O-O 
d5 15.Bb2 f6 16.f4 Rb8 17.Rf3 Qc7 18.c5 Rb7 19.Bd4 Qd8 20.Rg3+ Kh8 21.Qc3 
Rg7 22.Rxg7 Kxg7 23.Qe1 Qe7 24.h3 Kg8 25.Qh4 Qg7 26.Kh1 Bd7 27.Bc2 Be8 28.
Qe1 Bf7 29.Ba4 e5 30.fxe5 fxe5 31.Qxe5 Qxe5 32.Bxe5 Re8 33.Bg3 d4 34.Kg1 
0-1

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.17"]
[Round "2"]
[White "Csom, Istvan"]
[Black "Planinc, Albin"]
[WhiteElo "2540"]
[BlackElo "2545"]
[Result "0-1"]
[ECO "A87"]
[EventDate "1974.07.16"]
[PlyCount "68"]

1.Nf3 g6 2.d4 Bg7 3.c4 f5 4.g3 Nf6 5.Bg2 O-O 6.O-O d6 7.b3 e5 8.Nc3 Nc6 9.
Rb1 e4 10.Ne1 d5 11.Nc2 b6 12.Re1 dxc4 13.bxc4 Na5 14.Na3 Ng4 15.e3 c5 16.
Ne2 cxd4 17.Nxd4 Ne5 18.Bd2 Nd3 19.Re2 Qe7 20.Bxa5 Qxa3 21.Be1 Bd7 22.Rb3 
Qc5 23.Rxd3 exd3 24.Qxd3 Rad8 25.Bd5+ Kh8 26.Qb3 a5 27.Bc3 b5 28.cxb5 a4 
29.Qb2 Qxd5 30.Nc6 Qd1+ 31.Kg2 Bxc6+ 32.bxc6 Bxc3 33.Qxc3+ Kg8 34.Rc2 Qd5+
0-1

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.17"]
[Round "2"]
[White "Donner, Jan"]
[Black "Velimirovic, Dragoljub"]
[WhiteElo "2495"]
[BlackElo "2530"]
[Result "1/2-1/2"]
[ECO "A76"]
[EventDate "1974.07.16"]
[PlyCount "84"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.e4 Bg7 8.Be2 O-O 
9.O-O Re8 10.Qc2 Bg4 11.Re1 a6 12.a4 Nbd7 13.Bf4 Qc7 14.Nd2 Bxe2 15.Rxe2 
Nh5 16.Be3 Bd4 17.Rf1 Ne5 18.Nd1 Bxe3 19.Rxe3 Ng4 20.Ree1 b5 21.h3 Ngf6 
22.f4 Ng3 23.Rf3 Nf5 24.Rff1 Nd4 25.Qd3 Re7 26.Nc3 Rae8 27.axb5 axb5 28.
Nxb5 Nxb5 29.Qxb5 Nxd5 30.Rc1 Nf6 31.e5 Nd7 32.Ne4 dxe5 33.Nxc5 Nxc5 34.
Qxc5 Qxc5+ 35.Rxc5 e4 36.f5 e3 37.Re1 Rd8 38.Rc3 gxf5 39.Rcxe3 Rxe3 40.
Rxe3 Rd2 41.b3 f4 42.Rf3 Rb2 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.17"]
[Round "2"]
[White "Geller, Efim"]
[Black "Ivkov, Borislav"]
[WhiteElo "2610"]
[BlackElo "2530"]
[Result "1/2-1/2"]
[ECO "B78"]
[EventDate "1974.07.16"]
[PlyCount "74"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 Nc6 8.Qd2 
O-O 9.Bc4 Bd7 10.Bb3 Rc8 11.h4 Ne5 12.O-O-O Nc4 13.Bxc4 Rxc4 14.h5 Nxh5 
15.g4 Nf6 16.Nd5 e6 17.Nxf6+ Qxf6 18.Qh2 Rfc8 19.Qxh7+ Kf8 20.c3 b5 21.Bh6
Bxh6+ 22.Qxh6+ Ke7 23.Qd2 b4 24.Ne2 R8c6 25.g5 Qxf3 26.Rhf1 bxc3 27.Nxc3 
Rxc3+ 28.bxc3 Qxc3+ 29.Qxc3 Rxc3+ 30.Kb2 Rc4 31.Rf4 e5 32.Rf6 Be6 33.Re1 
Ra4 34.a3 Rd4 35.Kc3 Rc4+ 36.Kb2 Rd4 37.Kc3 Rc4+ 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.17"]
[Round "2"]
[White "Kaplan, Julio"]
[Black "Jansa, Vlastimil"]
[WhiteElo "2460"]
[BlackElo "2535"]
[Result "0-1"]
[ECO "B46"]
[EventDate "1974.07.16"]
[PlyCount "70"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6 6.Be2 Nge7 7.O-O Nxd4 8.
Qxd4 Nc6 9.Qe3 Be7 10.b3 O-O 11.Bb2 d5 12.exd5 exd5 13.Rad1 d4 14.Qf3 Be6 
15.Ne4 Qa5 16.a3 Rad8 17.b4 Qb6 18.Bc1 f5 19.Ng5 Bd5 20.Qh5 h6 21.c4 Bxg5 
22.Bxg5 hxg5 23.cxd5 Ne5 24.Qxg5 Rxd5 25.Rc1 Kh7 26.Qe7 Kg8 27.Bd1 Qd8 28.
Qxb7 Rd6 29.Re1 Qf6 30.f4 Nd3 31.Bb3+ Kh7 32.Qf3 Nxc1 33.Rxc1 Qe7 34.Qf2 
Qe3 35.Bc4 Rc8 0-1

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.17"]
[Round "2"]
[White "Knaak, Rainer"]
[Black "Timman, Jan"]
[WhiteElo "2515"]
[BlackElo "2540"]
[Result "0-1"]
[ECO "E44"]
[EventDate "1974.07.16"]
[PlyCount "90"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Ne2 Ne4 6.Qc2 f5 7.f3 Nxc3 8.bxc3 Bd6
9.e4 O-O 10.e5 Be7 11.Nf4 d6 12.exd6 Bxd6 13.Bd3 c5 14.d5 e5 15.Ne2 Qh4+ 
16.g3 Qh3 17.Ng1 Qh5 18.Be3 Nd7 19.O-O-O Nf6 20.h3 Bd7 21.Qg2 e4 22.fxe4 
Nxe4 23.Ne2 Qg6 24.Rhg1 Rae8 25.Bf4 Bxf4+ 26.gxf4 Qf6 27.Kb2 Re7 28.Rc1 
Rfe8 29.Bxe4 fxe4 30.Qg3 e3 31.Rcd1 Bf5 32.h4 h5 33.Qg5 Qxg5 34.Rxg5 Bg4 
35.Re1 Re4 36.f5 Bxe2 37.Rxe2 Rxh4 38.f6 Rg4 39.Rxh5 gxf6 40.d6 Rg7 41.
Reh2 e2 42.Rh8+ Kf7 43.Rxe8 Kxe8 44.Rxe2+ Kd7 45.Rd2 f5 0-1

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.17"]
[Round "2"]
[White "Ribli, Zoltan"]
[Black "Ree, Hans"]
[WhiteElo "2525"]
[BlackElo "2425"]
[Result "1/2-1/2"]
[ECO "A05"]
[EventDate "1974.07.16"]
[PlyCount "134"]

1.Nf3 Nf6 2.g3 g6 3.b3 Bg7 4.Bb2 d6 5.d4 c5 6.c3 cxd4 7.cxd4 O-O 8.Bg2 Nc6
9.O-O d5 10.Nc3 Ne4 11.Nxe4 dxe4 12.Ne5 Nxe5 13.dxe5 Bf5 14.Qd4 Qxd4 15.
Bxd4 Rfd8 16.e3 f6 17.exf6 Bxf6 18.Bxf6 exf6 19.Rfc1 Rac8 20.h3 h5 21.g4 
hxg4 22.hxg4 Bxg4 23.Bxe4 Rd2 24.Rxc8+ Bxc8 25.Bxg6 Be6 26.Kg2 a5 27.Kf3 
b5 28.e4 b4 29.Ke3 Rc2 30.f4 Kg7 31.Be8 Kf8 32.Bb5 Ke7 33.Kd3 Rc3+ 34.Kd4 
Rc2 35.Kd3 Rc3+ 36.Kd2 Rh3 37.Be2 Rh2 38.Ke3 Rh3+ 39.Kd4 Rh2 40.Bc4 Rc2 
41.Bxe6 Kxe6 42.a3 Rc3 43.axb4 axb4 44.f5+ Ke7 45.Ra7+ Kf8 46.Kd5 Rxb3 47.
Ke6 Ra3 48.Rf7+ Kg8 49.Rb7 Ra6+ 50.Ke7 Kg7 51.Ke8+ Kh6 52.Rxb4 Kg5 53.Rb7 
Ra4 54.Re7 Rb4 55.Kf7 Rb6 56.Kg7 Ra6 57.Kh7 Ra4 58.Rg7+ Kh5 59.e5 fxe5 60.
f6 Rf4 61.f7 Rxf7 62.Rxf7 Kg4 63.Re7 Kf4 64.Kg6 e4 65.Kh5 e3 66.Kh4 Kf3 
67.Kh3 e2 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.17"]
[Round "2"]
[White "Sosonko, Gennadi"]
[Black "Lombardy, William James"]
[WhiteElo "2450"]
[BlackElo "2520"]
[Result "1/2-1/2"]
[ECO "E04"]
[EventDate "1974.07.16"]
[PlyCount "76"]

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3 a6 6.O-O b5 7.Ne5 Nd5 8.a4 Bb7 
9.e4 Nf6 10.axb5 axb5 11.Rxa8 Bxa8 12.Nc3 c6 13.Bg5 Be7 14.Qa1 Bb7 15.Qa7 
Qc8 16.d5 O-O 17.dxe6 fxe6 18.Bh3 Na6 19.Be3 Kh8 20.Ra1 Bd6 21.Rxa6 Bxa6 
22.Nf7+ Rxf7 23.Qxf7 Qd7 24.Qxd7 Nxd7 25.Bxe6 Nc5 26.e5 Be7 27.Bxc5 Bxc5 
28.Bd7 Bb7 29.Ne4 Be7 30.f4 Kg8 31.Kf2 Kf8 32.Nd6 Bxd6 33.exd6 b4 34.Ke3 
c5 35.Be6 Ke8 36.h4 Kd8 37.Bf5 h6 38.Be6 Bc8 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.17"]
[Round "2"]
[White "Tukmakov, Vladimir"]
[Black "Langeweg, Christian"]
[WhiteElo "2570"]
[BlackElo "2390"]
[Result "1-0"]
[ECO "B83"]
[EventDate "1974.07.16"]
[PlyCount "81"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 d6 6.Be2 Nf6 7.Be3 Be7 8.f4 
O-O 9.O-O Bd7 10.Nb3 Qc7 11.Bf3 Rfd8 12.g4 Na5 13.g5 Ne8 14.Nxa5 Qxa5 15.
Qe1 Bf8 16.Rd1 Nc7 17.Bg2 Nb5 18.Nxb5 Qxe1 19.Rfxe1 Bxb5 20.Rd2 Rdc8 21.b3
Bc6 22.c4 b5 23.Rc1 b4 24.Rcd1 a5 25.e5 Bxg2 26.Kxg2 dxe5 27.fxe5 a4 28.
Kf3 axb3 29.axb3 g6 30.Ke4 Ra3 31.Rd8 Rxd8 32.Rxd8 Kg7 33.Rd3 Ra5 34.Rd2 
Be7 35.Rc2 Bd8 36.c5 Ra3 37.Rb2 Ra1 38.Kd3 Bc7 39.Bd4 Rc1 40.Rc2 Re1 41.
Rc4 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.18"]
[Round "3"]
[White "Ivkov, Borislav"]
[Black "Tukmakov, Vladimir"]
[WhiteElo "2530"]
[BlackElo "2570"]
[Result "1/2-1/2"]
[ECO "A16"]
[EventDate "1974.07.16"]
[PlyCount "77"]

1.c4 Nf6 2.Nc3 d5 3.e3 g6 4.Qb3 e6 5.Nf3 Bg7 6.Qa3 b6 7.d4 Bb7 8.cxd5 exd5
9.Bd2 a6 10.Rc1 Nbd7 11.Be2 Bf8 12.Qa4 Bd6 13.O-O O-O 14.Rfd1 Qe7 15.Be1 
Rfe8 16.Bf1 h5 17.g3 Ng4 18.Bg2 Ndf6 19.Qb3 Rad8 20.a4 Ne4 21.Nd2 Ngf6 22.
a5 b5 23.Na2 Bc8 24.Nxe4 dxe4 25.Bb4 Be6 26.Qa3 Bxa2 27.Bxd6 Qxd6 28.Qxa2 
c5 29.Qa3 c4 30.Qxd6 Rxd6 31.b3 cxb3 32.Rc5 Nd7 33.Rc7 Ne5 34.Bxe4 Nc4 35.
Bd3 Nxa5 36.Ra1 Nc4 37.Rb1 Na5 38.Ra1 Nc4 39.Rb1 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.18"]
[Round "3"]
[White "Jansa, Vlastimil"]
[Black "Knaak, Rainer"]
[WhiteElo "2535"]
[BlackElo "2515"]
[Result "1-0"]
[ECO "C72"]
[EventDate "1974.07.16"]
[PlyCount "55"]

1.e4 Nc6 2.Nf3 e5 3.Bb5 a6 4.Ba4 d6 5.O-O Bd7 6.d4 Nf6 7.c3 Qe7 8.Nbd2 g6 
9.b4 Bg7 10.Re1 O-O 11.a3 Nh5 12.Bb2 Rae8 13.Qc2 Nf4 14.Rad1 b5 15.Bb3 Bg4
16.h3 Bd7 17.Nf1 Qf6 18.N1h2 Qd8 19.Ng4 h5 20.Ne3 Qf6 21.Nd5 Qd8 22.Nxf4 
exf4 23.c4 g5 24.h4 gxh4 25.cxb5 axb5 26.e5 Kh8 27.Ba2 Ne7 28.Nxh4 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.18"]
[Round "3"]
[White "Langeweg, Christian"]
[Black "Sosonko, Gennadi"]
[WhiteElo "2390"]
[BlackElo "2450"]
[Result "1/2-1/2"]
[ECO "E51"]
[EventDate "1974.07.16"]
[PlyCount "27"]

1.Nf3 Nf6 2.c4 e6 3.Nc3 d5 4.d4 Bb4 5.e3 O-O 6.Bd3 Nc6 7.O-O dxc4 8.Bxc4 
Bd6 9.Bb5 e5 10.Bxc6 exd4 11.Nxd4 bxc6 12.Nxc6 Qe8 13.Nd4 Bb7 14.h3 
1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.18"]
[Round "3"]
[White "Lombardy, William James"]
[Black "Ribli, Zoltan"]
[WhiteElo "2520"]
[BlackElo "2525"]
[Result "1/2-1/2"]
[ECO "E60"]
[EventDate "1974.07.16"]
[PlyCount "25"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 c5 5.dxc5 Na6 6.Nc3 Nxc5 7.Bd2 d6 8.Rc1 
O-O 9.Nh3 Nfe4 10.O-O Nxd2 11.Qxd2 Bxh3 12.Bxh3 Qa5 13.Rfd1 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.18"]
[Round "3"]
[White "Planinc, Albin"]
[Black "Kaplan, Julio"]
[WhiteElo "2545"]
[BlackElo "2460"]
[Result "1/2-1/2"]
[ECO "B78"]
[EventDate "1974.07.16"]
[PlyCount "49"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.f3 Nc6 8.Qd2 
O-O 9.Bc4 Bd7 10.O-O-O Rc8 11.Bb3 Ne5 12.Rhe1 Nc4 13.Bxc4 Rxc4 14.Nb3 Qc7 
15.Bg5 Be6 16.Nb5 Qb6 17.N5d4 Rfc8 18.Kb1 Bd7 19.Rc1 a5 20.Be3 a4 21.Qa5 
Qc7 22.Qxc7 R4xc7 23.Nd2 e5 24.Ne2 d5 25.Bg5 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.18"]
[Round "3"]
[White "Ree, Hans"]
[Black "Donner, Jan"]
[WhiteElo "2425"]
[BlackElo "2495"]
[Result "1-0"]
[ECO "B09"]
[EventDate "1974.07.16"]
[PlyCount "107"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nc6 7.O-O Bg4 8.e5 dxe5
9.dxe5 Nd5 10.h3 Nxc3 11.bxc3 Bf5 12.Be3 Bxd3 13.cxd3 Qd7 14.d4 Na5 15.Qe2
Qc6 16.Qd3 Qc4 17.Qc2 f5 18.Nd2 Qc6 19.c4 e6 20.Rac1 Qd7 21.Nb3 Nxb3 22.
Qxb3 b6 23.d5 Rad8 24.Rfd1 c6 25.dxe6 Qxe6 26.c5 Qxb3 27.axb3 b5 28.Rd6 
Rc8 29.Rd7 a5 30.Rcd1 Ra8 31.Rc7 Rfc8 32.Rxc8+ Rxc8 33.Rd7 g5 34.g3 gxf4 
35.gxf4 Bf8 36.Ra7 Rd8 37.Rxa5 Rd3 38.Kf2 Kf7 39.Ra6 Ke6 40.Rxc6+ Kd5 41.
Rc8 Be7 42.Rc7 Bh4+ 43.Kf3 Rxb3 44.Rxh7 Be1 45.Rd7+ Ke6 46.Rd6+ Ke7 47.c6 
Rc3 48.Ke2 Bg3 49.Rg6 Bh4 50.Rh6 Bg3 51.Bd2 Rc2 52.Rh7+ Ke6 53.c7 b4 54.
Kf3 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.18"]
[Round "3"]
[White "Timman, Jan"]
[Black "Geller, Efim"]
[WhiteElo "2540"]
[BlackElo "2610"]
[Result "1/2-1/2"]
[ECO "C93"]
[EventDate "1974.07.16"]
[PlyCount "114"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 
9.h3 h6 10.d4 Re8 11.Be3 Bf8 12.Nbd2 Bd7 13.Qb1 Rb8 14.a3 a5 15.Qa2 Qe7 
16.Nh4 Nh5 17.Nf5 Qf6 18.g4 a4 19.Bd5 Nd8 20.h4 c6 21.dxe5 dxe5 22.gxh5 
cxd5 23.Qxd5 Bxf5 24.exf5 Qxf5 25.Qf3 Qxf3 26.Nxf3 Nc6 27.Rad1 e4 28.Nd4 
Na5 29.Bf4 Rb7 30.Nf5 Nc4 31.Re2 Ne5 32.Kg2 Rd7 33.Rxd7 Nxd7 34.f3 exf3+ 
35.Kxf3 Rc8 36.Ne7+ Bxe7 37.Rxe7 Nf6 38.Re5 Rb8 39.Rf5 Rb6 40.Be3 Rb7 41.
Bxh6 gxh6 42.Rxf6 Kg7 43.Rd6 Rc7 44.Rd5 Rb7 45.Rf5 Rb6 46.Ke3 Kf8 47.Kd4 
Ke7 48.Kc5 Rb8 49.Re5+ Kf6 50.Rd5 Ke6 51.Rd6+ Ke5 52.Rxh6 f5 53.Rg6 f4 54.
h6 f3 55.h7 Rc8+ 56.Kb6 Rb8+ 57.Ka5 Ra8+ 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.18"]
[Round "3"]
[White "Velimirovic, Dragoljub"]
[Black "Csom, Istvan"]
[WhiteElo "2530"]
[BlackElo "2540"]
[Result "1-0"]
[ECO "B89"]
[EventDate "1974.07.16"]
[PlyCount "51"]

1.e4 c5 2.Nf3 d6 3.d4 Nf6 4.Nc3 cxd4 5.Nxd4 a6 6.Bc4 e6 7.Bb3 Be7 8.Be3 
Nc6 9.Qe2 Qc7 10.O-O-O O-O 11.Kb1 b5 12.Nxc6 Qxc6 13.Bd4 Bb7 14.Rhe1 Qc7 
15.a3 Rac8 16.f4 e5 17.fxe5 dxe5 18.Nd5 Bxd5 19.exd5 exd4 20.Qxe7 Qxh2 21.
d6 Rce8 22.Bxf7+ Rxf7 23.Qxe8+ Nxe8 24.Rxe8+ Rf8 25.d7 Qd6 26.Rf1 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.19"]
[Round "4"]
[White "Csom, Istvan"]
[Black "Ree, Hans"]
[WhiteElo "2540"]
[BlackElo "2425"]
[Result "1-0"]
[ECO "D78"]
[EventDate "1974.07.16"]
[PlyCount "41"]

1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.O-O O-O 5.d4 d5 6.c4 c6 7.Qb3 Qb6 8.Nc3 Bf5 
9.Bf4 Qxb3 10.axb3 Na6 11.cxd5 Nxd5 12.Nxd5 cxd5 13.Ra5 Be4 14.Rb5 Bxf3 
15.Bxf3 Bxd4 16.Bxd5 g5 17.Bxg5 Nc7 18.Rb4 Bxf2+ 19.Rxf2 Nxd5 20.Rb5 Nf6 
21.Bh6 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.19"]
[Round "4"]
[White "Donner, Jan"]
[Black "Lombardy, William James"]
[WhiteElo "2495"]
[BlackElo "2520"]
[Result "1/2-1/2"]
[ECO "D86"]
[EventDate "1974.07.16"]
[PlyCount "39"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 b6 8.Nf3 
O-O 9.O-O Bb7 10.Qe2 Nc6 11.Bb2 Na5 12.Bd3 e6 13.Rad1 c5 14.Bc1 Qc7 15.Be3
Rfd8 16.Bg5 Rdc8 17.Rc1 Qd6 18.Rfd1 cxd4 19.cxd4 Rxc1 20.Bxc1 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.19"]
[Round "4"]
[White "Geller, Efim"]
[Black "Jansa, Vlastimil"]
[WhiteElo "2610"]
[BlackElo "2535"]
[Result "1/2-1/2"]
[ECO "C89"]
[EventDate "1974.07.16"]
[PlyCount "69"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 
9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 c6 12.d4 Bd6 13.Re1 Qh4 14.g3 Qh3 15.Be3 
Re8 16.Bxd5 cxd5 17.Qf3 Ra7 18.Nd2 Rae7 19.a4 bxa4 20.Rxa4 Kh8 21.Rea1 f5 
22.Ra5 g5 23.Rxd5 g4 24.Qg2 Qxg2+ 25.Kxg2 Bb7 26.Ra5 Bc7 27.Kf1 f4 28.gxf4
Bxd5 29.Rxd5 Rf7 30.Re5 Bxe5 31.fxe5 Kg8 32.Ke2 a5 33.b3 Rd7 34.Nc4 Rc7 
35.Kd3 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.19"]
[Round "4"]
[White "Kaplan, Julio"]
[Black "Velimirovic, Dragoljub"]
[WhiteElo "2460"]
[BlackElo "2530"]
[Result "0-1"]
[ECO "B52"]
[EventDate "1974.07.16"]
[PlyCount "144"]

1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.Bxd7+ Qxd7 5.c4 Nc6 6.Nc3 g6 7.d4 cxd4 8.
Nxd4 Bg7 9.Be3 Nf6 10.f3 O-O 11.O-O a6 12.Rc1 Rac8 13.b3 Nxd4 14.Bxd4 e6 
15.Qd3 Rc6 16.Rcd1 Qc7 17.f4 Rc8 18.a4 Ng4 19.Bxg7 Kxg7 20.h3 Nf6 21.Qd4 
Qb6 22.e5 Nd7 23.Ne4 dxe5 24.Qxb6 Nxb6 25.fxe5 R6c7 26.Nf6 Rf8 27.a5 Nc8 
28.Rf4 Ne7 29.Rd7 Rxd7 30.Nxd7 Rc8 31.b4 Nc6 32.Nc5 Rc7 33.Nd3 Rd7 34.Nc5 
Re7 35.Nd3 Rd7 36.Nc5 Rd1+ 37.Kh2 Rb1 38.Nxb7 Rxb4 39.Nc5 Nxa5 40.Nxa6 
Rxc4 41.Rf1 Re4 42.Nc7 Rxe5 43.Ne8+ Kg8 44.Nd6 f5 45.Rc1 Rd5 46.Rc8+ Kg7 
47.Rc7+ Kf6 48.Ne8+ Ke5 49.Rc1 Kf4 50.Rf1+ Ke3 51.Nc7 Ke2 52.Ra1 Nb3 53.
Nxe6 Nxa1 54.Nf4+ Kf2 55.Nxd5 Nc2 56.h4 Ne3 57.Nf4 Ng4+ 58.Kh3 Ne5 59.Kh2 
h6 60.Nh3+ Ke3 61.g3 Nd3 62.Kg2 f4 63.Ng1 Ne1+ 64.Kf1 Nf3 65.Nh3 Nd2+ 66.
Kg2 f3+ 67.Kg1 Ne4 68.g4 g5 69.hxg5 Nxg5 70.Nf2 Ke2 71.Nh1 Ne4 72.Kh2 Kf1 
0-1

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.19"]
[Round "4"]
[White "Knaak, Rainer"]
[Black "Planinc, Albin"]
[WhiteElo "2515"]
[BlackElo "2545"]
[Result "1-0"]
[ECO "A50"]
[EventDate "1974.07.16"]
[PlyCount "73"]

1.d4 Nf6 2.c4 b6 3.Nc3 Bb7 4.f3 d5 5.cxd5 Nxd5 6.Nxd5 Qxd5 7.e4 Qd6 8.Bd3 
Qb4+ 9.Qd2 e5 10.Ne2 exd4 11.Nxd4 Nd7 12.Be2 O-O-O 13.a3 Qe7 14.Qc3 c5 15.
Be3 Ne5 16.O-O g6 17.Qc2 Bg7 18.Nb5 Nc6 19.Bc4 a6 20.Nc3 Nd4 21.Qf2 f5 22.
Nd5 Bxd5 23.Bxd5 f4 24.Bd2 Nb3 25.Bc3 Nxa1 26.Rxa1 Bxc3 27.bxc3 Qe5 28.Qf1
Rxd5 29.Qxa6+ Kc7 30.Qa7+ Kc6 31.Rb1 Qb8 32.exd5+ Kxd5 33.Qd7+ Kc4 34.Qe6+
Kd3 35.Qd5+ Kc2 36.Qd1+ Kxc3 37.Rb3+ 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.19"]
[Round "4"]
[White "Langeweg, Christian"]
[Black "Ivkov, Borislav"]
[WhiteElo "2390"]
[BlackElo "2530"]
[Result "1/2-1/2"]
[ECO "D34"]
[EventDate "1974.07.16"]
[PlyCount "66"]

1.c4 c5 2.Nf3 Nf6 3.Nc3 e6 4.g3 d5 5.cxd5 exd5 6.d4 Nc6 7.Bg2 Be7 8.O-O 
O-O 9.Bg5 cxd4 10.Nxd4 h6 11.Be3 Re8 12.Rc1 Bf8 13.Nb3 Be6 14.Bc5 Bxc5 15.
Nxc5 Qe7 16.Nb3 Rad8 17.Nd4 Qb4 18.Nxe6 Rxe6 19.Rc2 d4 20.Nb1 Ne5 21.Na3 
d3 22.exd3 Nxd3 23.Nc4 Ree8 24.a3 Qb5 25.Qb1 Ng4 26.h3 Ngxf2 27.Kh2 Ne4 
28.Qa2 Qg5 29.Bxe4 Rxe4 30.Rxf7 Kh8 31.Nd6 Rxd6 32.Rf8+ Kh7 33.Qg8+ Kg6 
1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.19"]
[Round "4"]
[White "Sosonko, Gennadi"]
[Black "Ribli, Zoltan"]
[WhiteElo "2450"]
[BlackElo "2525"]
[Result "1/2-1/2"]
[ECO "D97"]
[EventDate "1974.07.16"]
[PlyCount "33"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 a6 8.Be2 b5
9.Qb3 c5 10.dxc5 Be6 11.Qc2 Qc7 12.Nd4 Bc4 13.Be3 Bxe2 14.Qxe2 Rd8 15.O-O 
b4 16.Na4 Nxe4 17.Qf3 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.19"]
[Round "4"]
[White "Tukmakov, Vladimir"]
[Black "Timman, Jan"]
[WhiteElo "2570"]
[BlackElo "2540"]
[Result "1/2-1/2"]
[ECO "B08"]
[EventDate "1974.07.16"]
[PlyCount "37"]

1.e4 d6 2.d4 g6 3.Nc3 Bg7 4.Be2 Nf6 5.Nf3 O-O 6.O-O Bg4 7.Be3 Nc6 8.Qd2 e5
9.dxe5 dxe5 10.Rfd1 Qc8 11.Qe1 Rd8 12.Rxd8+ Qxd8 13.Rd1 Qf8 14.a3 Rd8 15.
h3 Bxf3 16.Rxd8 Qxd8 17.Bxf3 Nd4 18.Qd1 c6 19.Be2 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.21"]
[Round "5"]
[White "Ivkov, Borislav"]
[Black "Sosonko, Gennadi"]
[WhiteElo "2530"]
[BlackElo "2450"]
[Result "1-0"]
[ECO "A09"]
[EventDate "1974.07.16"]
[PlyCount "125"]

1.Nf3 d5 2.c4 d4 3.g3 Nc6 4.Bg2 e5 5.d3 Nf6 6.O-O Nd7 7.Na3 Be7 8.Nc2 O-O 
9.e3 Bf6 10.exd4 Nxd4 11.Ncxd4 exd4 12.b4 Re8 13.Re1 a5 14.Rxe8+ Qxe8 15.
b5 Nc5 16.Ba3 Ne6 17.Qe1 Qd8 18.Qe4 Rb8 19.Qd5 Bd7 20.Ne5 Be8 21.Re1 Be7 
22.Qxd8 Bxd8 23.Bd5 Bf6 24.Nxf7 Bxf7 25.Bxe6 Bxe6 26.Rxe6 c6 27.Bd6 Rc8 
28.b6 Kf7 29.Re4 c5 30.Bc7 a4 31.f4 a3 32.Re1 Ra8 33.Rb1 Ke6 34.Kf2 Kd7 
35.Kf3 Kc6 36.Rb3 h5 37.Rb1 Be7 38.Rb3 Bf6 39.Rb1 Bd8 40.Bxd8 Rxd8 41.Rb3 
Re8 42.f5 Re3+ 43.Kf4 Re2 44.Rxa3 Rxh2 45.Ra8 Rf2+ 46.Ke4 Re2+ 47.Kf4 Rf2+
48.Ke4 Re2+ 49.Kf3 Re3+ 50.Kf4 Rxd3 51.Rg8 Rd1 52.Rxg7 Rf1+ 53.Ke4 Re1+ 
54.Kf3 Rf1+ 55.Ke2 Rxf5 56.Rg6+ Kd7 57.a4 Re5+ 58.Kd2 Re7 59.a5 Rh7 60.Rg8
Kc6 61.Rg6+ Kd7 62.Kd3 Ke7 63.Rc6 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.21"]
[Round "5"]
[White "Jansa, Vlastimil"]
[Black "Tukmakov, Vladimir"]
[WhiteElo "2535"]
[BlackElo "2570"]
[Result "1/2-1/2"]
[ECO "B52"]
[EventDate "1974.07.16"]
[PlyCount "80"]

1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.Bxd7+ Qxd7 5.c4 Nf6 6.Nc3 Nc6 7.d4 cxd4 8.
Nxd4 g6 9.f3 Bg7 10.Be3 O-O 11.O-O Rac8 12.b3 Rfd8 13.Qd2 e6 14.Rac1 Qe8 
15.Rfd1 a6 16.Qf2 Ne5 17.Qh4 Qf8 18.Nde2 h6 19.Rd2 b5 20.cxb5 axb5 21.Nxb5
Rxc1+ 22.Nxc1 d5 23.Nc3 g5 24.Qg3 dxe4 25.Qxe5 Rxd2 26.Bxd2 Qd8 27.Be1 
exf3 28.Qg3 Qd4+ 29.Kh1 Qe3 30.N1e2 g4 31.gxf3 gxf3 32.Ng1 Nh5 33.Qf2 Qxf2
34.Bxf2 Bxc3 35.Nxf3 f5 36.Bd4 Bb4 37.a4 Nf4 38.Bb6 Nd5 39.Bd8 Kf8 40.Nd4 
Ke8 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.21"]
[Round "5"]
[White "Lombardy, William James"]
[Black "Csom, Istvan"]
[WhiteElo "2520"]
[BlackElo "2540"]
[Result "1/2-1/2"]
[ECO "D36"]
[EventDate "1974.07.16"]
[PlyCount "57"]

1.Nf3 Nf6 2.c4 e6 3.Nc3 d5 4.d4 Be7 5.Bg5 Nbd7 6.e3 O-O 7.cxd5 exd5 8.Bd3 
c6 9.Qc2 Re8 10.h3 Nf8 11.Bxf6 Bxf6 12.O-O-O Be6 13.Kb1 Rc8 14.g4 b5 15.
Ne2 g6 16.Nc1 Nd7 17.Nb3 Bg7 18.Rc1 Nb6 19.Nc5 Nc4 20.Qd1 Qd6 21.Qg1 Rc7 
22.Rc2 Bc8 23.h4 h6 24.Bf1 Rce7 25.Bh3 a5 26.Qh2 Qd8 27.g5 h5 28.Bxc8 Qxc8
29.Qh3 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.21"]
[Round "5"]
[White "Planinc, Albin"]
[Black "Geller, Efim"]
[WhiteElo "2545"]
[BlackElo "2610"]
[Result "1/2-1/2"]
[ECO "A00"]
[EventDate "1974.07.16"]
[PlyCount "34"]

1.g3 d5 2.Bg2 c6 3.d3 Nf6 4.Nd2 e5 5.Ngf3 Nbd7 6.O-O Bc5 7.c3 O-O 8.b4 Bb6
9.e4 a5 10.Bb2 axb4 11.cxb4 Re8 12.Qb3 Bc7 13.exd5 cxd5 14.Rfe1 b5 15.Re2 
Bb7 16.Rae1 Qb8 17.a3 Qa7 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.21"]
[Round "5"]
[White "Ree, Hans"]
[Black "Kaplan, Julio"]
[WhiteElo "2425"]
[BlackElo "2460"]
[Result "1-0"]
[ECO "A73"]
[EventDate "1974.07.16"]
[PlyCount "83"]

1.Nf3 c5 2.c4 g6 3.d4 Bg7 4.d5 d6 5.Nc3 Nf6 6.e4 O-O 7.Be2 e6 8.O-O exd5 
9.cxd5 Bg4 10.Bg5 h6 11.Bh4 Bxf3 12.Bxf3 Nbd7 13.Qc2 a6 14.a4 c4 15.Be2 
Rc8 16.Rfe1 Ne5 17.a5 g5 18.Bg3 Nfd7 19.Nd1 Re8 20.Ne3 Nd3 21.Bxd3 cxd3 
22.Qxd3 Bxb2 23.Rab1 Nc5 24.Qd2 Bg7 25.f3 Na4 26.Nf5 Bc3 27.Qd1 Qxa5 28.
Rf1 b5 29.Nxh6+ Kg7 30.Nf5+ Kg6 31.Nxd6 Rcd8 32.Nxe8 Rxe8 33.d6 Qb6+ 34.
Kh1 Qc6 35.e5 f5 36.exf6 Bxf6 37.Qd3+ Kg7 38.Rfe1 Nc5 39.Qf5 Rxe1+ 40.Rxe1
Nd7 41.f4 gxf4 42.Bxf4 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.21"]
[Round "5"]
[White "Ribli, Zoltan"]
[Black "Donner, Jan"]
[WhiteElo "2525"]
[BlackElo "2495"]
[Result "1/2-1/2"]
[ECO "A11"]
[EventDate "1974.07.16"]
[PlyCount "36"]

1.c4 Nf6 2.g3 c6 3.Bg2 d5 4.b3 dxc4 5.bxc4 Qd4 6.Nc3 Qxc4 7.Ba3 Qa6 8.Qc1 
Nbd7 9.Nf3 e6 10.Bxf8 Nxf8 11.a4 N8d7 12.a5 O-O 13.O-O Qc4 14.d4 Qb4 15.a6
bxa6 16.Na4 Rb8 17.Ne5 Nxe5 18.dxe5 Nd5 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.21"]
[Round "5"]
[White "Timman, Jan"]
[Black "Langeweg, Christian"]
[WhiteElo "2540"]
[BlackElo "2390"]
[Result "0-1"]
[ECO "B71"]
[EventDate "1974.07.16"]
[PlyCount "113"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.f4 Nc6 7.Nxc6 bxc6 8.e5 
Nd7 9.exd6 exd6 10.Qd4 Nf6 11.b3 Bg7 12.Bb2 O-O 13.O-O-O Bg4 14.Be2 Nd5 
15.Qxg7+ Kxg7 16.Nxd5+ f6 17.Bxg4 cxd5 18.Be6 Re8 19.Rhe1 Rc8 20.Rd2 h5 
21.Re3 Rc7 22.Bd4 Kh6 23.Rde2 f5 24.g3 Qa8 25.h3 Rf8 26.Rf2 Qc6 27.c3 a5 
28.g4 a4 29.b4 Qc4 30.Kd1 Rb8 31.a3 Qb3+ 32.Ke2 Qxa3 33.gxf5 Qb2+ 34.Kf3 
Qb1 35.fxg6 a3 36.Bxd5 Qh1+ 37.Rg2 Qxh3+ 38.Ke2 Qh4 39.f5 Rxb4 40.Kd3 
Rxd4+ 41.cxd4 Qf6 42.Be6 Ra7 43.Rf3 d5 44.Bxd5 Rd7 45.Rf4 Qd6 46.g7 Rxg7 
47.Rxg7 Qxf4 48.Rg6+ Kh7 49.Rg2 h4 50.Ra2 h3 51.f6 h2 52.f7 Qf5+ 53.Kc3 
Qxd5 54.f8=Q h1=Q 55.Qe7+ Kg6 56.Qe8+ Kh7 57.Qe7+ 0-1

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.21"]
[Round "5"]
[White "Velimirovic, Dragoljub"]
[Black "Knaak, Rainer"]
[WhiteElo "2530"]
[BlackElo "2515"]
[Result "1-0"]
[ECO "C68"]
[EventDate "1974.07.16"]
[PlyCount "89"]

1.e4 Nc6 2.Bb5 e5 3.Nf3 a6 4.Bxc6 dxc6 5.O-O Qd6 6.d3 f6 7.Nbd2 Be6 8.Nc4 
Qd7 9.Qe2 O-O-O 10.Be3 g5 11.Rad1 c5 12.c3 Qc6 13.b3 Nh6 14.Bc1 Nf7 15.Bb2
Nd6 16.Nxd6+ Bxd6 17.Ne1 h5 18.d4 Qb6 19.Nc2 c4 20.b4 exd4 21.cxd4 h4 22.
d5 Bd7 23.Bd4 Bxh2+ 24.Kxh2 Qd6+ 25.Kg1 g4 26.f3 gxf3 27.Qxf3 h3 28.g3 h2+
29.Kh1 Rdg8 30.Bxf6 Bg4 31.Qf4 Bxd1 32.Rxd1 Qxf4 33.gxf4 Rh3 34.Bg5 Rgh8 
35.e5 Rc3 36.Rd2 Rf3 37.Rd1 Rc3 38.Ne1 Re3 39.Ng2 Re2 40.Rc1 Rxa2 41.Nh4 
b5 42.e6 Rg8 43.Nf5 Rh8 44.Bf6 Re8 45.Re1 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.22"]
[Round "6"]
[White "Csom, Istvan"]
[Black "Ribli, Zoltan"]
[WhiteElo "2540"]
[BlackElo "2525"]
[Result "1/2-1/2"]
[ECO "E18"]
[EventDate "1974.07.16"]
[PlyCount "45"]

1.Nf3 Nf6 2.d4 e6 3.c4 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 Ne4 8.Nxe4 
Bxe4 9.Ne1 Bxg2 10.Nxg2 d5 11.Qa4 dxc4 12.Qxc4 c5 13.Be3 cxd4 14.Qxd4 Qxd4
15.Bxd4 Nc6 16.Bc3 Bb4 17.Rfc1 Bxc3 18.Rxc3 Rfc8 19.Rac1 Ne7 20.Rc7 Rxc7 
21.Rxc7 Rc8 22.Rxc8+ Nxc8 23.Kf1 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.22"]
[Round "6"]
[White "Geller, Efim"]
[Black "Velimirovic, Dragoljub"]
[WhiteElo "2610"]
[BlackElo "2530"]
[Result "1/2-1/2"]
[ECO "A35"]
[EventDate "1974.07.16"]
[PlyCount "117"]

1.Nf3 c5 2.c4 Nc6 3.Nc3 g6 4.e3 Nf6 5.d4 cxd4 6.exd4 d5 7.Bg5 Bg7 8.Bxf6 
Bxf6 9.cxd5 Nb8 10.Bb5+ Bd7 11.Qb3 O-O 12.O-O Qb6 13.a4 a5 14.Ne5 Bxb5 15.
Nxb5 Qd8 16.Rac1 Na6 17.Nd3 Qb6 18.Nc5 Rfd8 19.g3 Nb4 20.d6 exd6 21.Ne4 
Bxd4 22.Rc7 d5 23.Qf3 Rf8 24.Ned6 Bc5 25.Rxb7 Qa6 26.Rd7 Bxd6 27.Rxd6 Qb7 
28.Rc1 Rac8 29.Rc3 Qe7 30.Re3 Qb7 31.h4 Rc4 32.h5 Qc8 33.Kg2 Qg4 34.Qxg4 
Rxg4 35.hxg6 fxg6 36.Rd7 Re4 37.Rxe4 dxe4 38.Nd6 e3 39.fxe3 Nc2 40.e4 Ne3+
41.Kh3 Rf1 42.g4 Rf3+ 43.Kh2 Nxg4+ 44.Kg2 Rb3 45.Rb7 Rd3 46.Rd7 Re3 47.Rc7
h5 48.Rc3 Rxc3 49.bxc3 Ne5 50.Kg3 Kf8 51.Kf4 h4 52.c4 Ke7 53.c5 Ke6 54.Nb5
g5+ 55.Kxg5 h3 56.Nd4+ Kd7 57.Ne2 Nd3 58.Ng3 Nxc5 59.Kg4 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.22"]
[Round "6"]
[White "Ivkov, Borislav"]
[Black "Timman, Jan"]
[WhiteElo "2530"]
[BlackElo "2540"]
[Result "1-0"]
[ECO "B03"]
[EventDate "1974.07.16"]
[PlyCount "49"]

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.c4 Nb6 5.f4 Bf5 6.Nc3 e6 7.Nf3 dxe5 8.fxe5 Bb4
9.Bd3 Bxd3 10.Qxd3 c5 11.O-O cxd4 12.Ne4 N6d7 13.Nfg5 Nxe5 14.Qg3 Nbd7 15.
Bf4 Qb6 16.Bxe5 f6 17.Bd6 fxg5 18.Bxb4 Qxb4 19.Nd6+ Ke7 20.Rf7+ Kd8 21.
Qxg5+ Kc7 22.Nb5+ Kc8 23.Raf1 b6 24.Rxd7 Kxd7 25.Qxg7+ 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.22"]
[Round "6"]
[White "Kaplan, Julio"]
[Black "Lombardy, William James"]
[WhiteElo "2460"]
[BlackElo "2520"]
[Result "0-1"]
[ECO "B68"]
[EventDate "1974.07.16"]
[PlyCount "40"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Bg5 e6 7.Qd2 a6 8.O-O-O 
Bd7 9.f4 Be7 10.Be2 Qc7 11.Nb3 O-O-O 12.Bxf6 gxf6 13.Bh5 Be8 14.Qe3 Rg8 
15.Qh3 Kb8 16.f5 Qc8 17.Rd2 Rg5 18.Rf1 Bd7 19.Bxf7 exf5 20.Qxh7 Rh8 0-1

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.22"]
[Round "6"]
[White "Knaak, Rainer"]
[Black "Ree, Hans"]
[WhiteElo "2515"]
[BlackElo "2425"]
[Result "0-1"]
[ECO "D14"]
[EventDate "1974.07.16"]
[PlyCount "46"]

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.cxd5 cxd5 5.Nc3 Nc6 6.Bf4 Bf5 7.e3 e6 8.Bb5 
Nd7 9.Ne5 Ncxe5 10.Bxe5 a6 11.Bxd7+ Qxd7 12.O-O f6 13.Bg3 Rc8 14.Rc1 Be7 
15.Qb3 O-O 16.Na4 Rxc1 17.Rxc1 Rc8 18.Rc3 Rxc3 19.Nxc3 b5 20.f3 b4 21.Qa4 
Qc8 22.Ne2 Bc2 23.Qa5 Bd3 0-1

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.22"]
[Round "6"]
[White "Langeweg, Christian"]
[Black "Jansa, Vlastimil"]
[WhiteElo "2390"]
[BlackElo "2535"]
[Result "0-1"]
[ECO "A88"]
[EventDate "1974.07.16"]
[PlyCount "48"]

1.c4 f5 2.Nf3 Nf6 3.g3 g6 4.Bg2 Bg7 5.O-O O-O 6.d4 d6 7.Nc3 c6 8.d5 Qa5 9.
Nd4 Qc5 10.dxc6 bxc6 11.Ndb5 Qb6 12.Be3 Qb7 13.Bg5 Na6 14.Rb1 Nc5 15.Nd4 
Nfe4 16.Be3 Bd7 17.Qc2 Nxc3 18.bxc3 Qc7 19.Rb4 e5 20.Nb3 a5 21.Nxc5 axb4 
22.Nxd7 Qxd7 23.cxb4 e4 24.f3 Ra3 0-1

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.22"]
[Round "6"]
[White "Sosonko, Gennadi"]
[Black "Donner, Jan"]
[WhiteElo "2450"]
[BlackElo "2495"]
[Result "1-0"]
[ECO "E04"]
[EventDate "1974.07.16"]
[PlyCount "65"]

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Nf3 a6 6.O-O b5 7.Ne5 Nd5 8.a4 Bb7 
9.e4 Nf6 10.axb5 axb5 11.Rxa8 Bxa8 12.Nc3 c6 13.Bg5 Bb7 14.d5 Be7 15.dxe6 
fxe6 16.Bh3 Qxd1 17.Rxd1 Nfd7 18.Bf4 Bf6 19.Nxd7 Nxd7 20.Bxe6 Ne5 21.Bxe5 
Bxe5 22.f4 Ke7 23.Bf5 Bd6 24.e5 Bc5+ 25.Kg2 Rd8 26.Rxd8 Kxd8 27.Bxh7 Bd4 
28.Be4 b4 29.Nd1 Bxb2 30.Nxb2 c3 31.Nd3 c5 32.Bxb7 c2 33.Bd5 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.22"]
[Round "6"]
[White "Tukmakov, Vladimir"]
[Black "Planinc, Albin"]
[WhiteElo "2570"]
[BlackElo "2545"]
[Result "1-0"]
[ECO "C41"]
[EventDate "1974.07.16"]
[PlyCount "87"]

1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7 5.Bc4 Be7 6.O-O O-O 7.Re1 c6 8.a4 a5 
9.h3 exd4 10.Nxd4 Nc5 11.Bf4 Re8 12.Qf3 Bf8 13.Rad1 Ncd7 14.Bb3 g6 15.g4 
Qe7 16.Nxc6 bxc6 17.Bxd6 Qd8 18.Bg3 Re6 19.Bxe6 fxe6 20.e5 Nd5 21.Ne4 Ba6 
22.b3 Bg7 23.c4 Nb4 24.Nc5 Nxc5 25.Rxd8+ Rxd8 26.Rd1 Ncd3 27.Bh4 Rf8 28.
Qe3 Nxe5 29.Rd8 Rxd8 30.Bxd8 c5 31.Bc7 Nbc6 32.Qxc5 Nf3+ 33.Kg2 Nfd4 34.
Qb6 Bc8 35.Bd6 e5 36.Bc5 Be6 37.Bxd4 Nxd4 38.Qxa5 Nxb3 39.Qd8+ Bf8 40.a5 
Bxc4 41.a6 Bxa6 42.Qd5+ Kg7 43.Qxe5+ Kh6 44.Qe3+ 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.23"]
[Round "7"]
[White "Donner, Jan"]
[Black "Csom, Istvan"]
[WhiteElo "2495"]
[BlackElo "2540"]
[Result "0-1"]
[ECO "E41"]
[EventDate "1974.07.16"]
[PlyCount "180"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 Nc6 6.Nf3 Bxc3+ 7.bxc3 d6 8.e4 e5
9.d5 Ne7 10.Nd2 h6 11.h4 Bd7 12.a4 Qa5 13.Ra3 O-O-O 14.Nf1 Rdf8 15.Bd2 g6 
16.Ne3 Ne8 17.h5 f5 18.hxg6 f4 19.Nf5 Nxf5 20.exf5 Ng7 21.g3 Bxf5 22.Bxf5+
Rxf5 23.gxf4 exf4 24.Rh4 Qd8 25.Rxf4 Re8+ 26.Kf1 Rxf4 27.Bxf4 Qh4 28.Qf3 
Rf8 29.Bg3 Qxc4+ 30.Qe2 Qxd5 31.Qg4+ Rf5 32.c4 Qe6 33.Qh4 Rh5 34.Qf4 Qxg6 
35.Qxd6 Qxd6 36.Bxd6 b6 37.Rg3 Nf5 38.Rg8+ Kb7 39.Bb8 Rh4 40.f4 Ne3+ 41.
Kf2 Nxc4 42.Kg3 Rh5 43.Kf3 Rd5 44.Rf8 a6 45.f5 Nd6 46.f6 Rf5+ 47.Ke3 Kc6 
48.Bxd6 Kxd6 49.f7 Ke7 50.Rb8 Kxf7 51.Rxb6 Rf6 52.Rb7+ Kg6 53.Rc7 Kg5 54.
Rxc5+ Rf5 55.Rc6 Ra5 56.Rc4 Rf5 57.Rc6 a5 58.Rc1 h5 59.Rg1+ Kf6 60.Rh1 Kg6
61.Rg1+ Kf7 62.Rb1 Kf6 63.Rh1 Rc5 64.Kf3 Kg5 65.Rb1 Rf5+ 66.Kg3 Re5 67.Rd1
h4+ 68.Kh3 Re3+ 69.Kh2 Kf4 70.Rf1+ Ke5 71.Rg1 Kf5 72.Rf1+ Ke4 73.Rg1 Kd4 
74.Rg4+ Re4 75.Rg5 Re5 76.Rg4+ Kc3 77.Rxh4 Rg5 78.Rf4 Kb3 79.Re4 Rg6 80.
Kh1 Rb6 81.Kg2 Rb4 82.Re5 Rxa4 83.Kf2 Ra1 84.Ke2 a4 85.Kd3 Rd1+ 86.Ke2 Rd4
87.Rb5+ Kc4 88.Ra5 Kb4 89.Ra8 a3 90.Ke3 Rd5 0-1

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.23"]
[Round "7"]
[White "Jansa, Vlastimil"]
[Black "Ivkov, Borislav"]
[WhiteElo "2535"]
[BlackElo "2530"]
[Result "1/2-1/2"]
[ECO "B50"]
[EventDate "1974.07.16"]
[PlyCount "33"]

1.e4 c5 2.Nf3 d6 3.Nc3 Bg4 4.h3 Bxf3 5.Qxf3 Nc6 6.Bb5 Rc8 7.O-O g6 8.d3 
Bg7 9.Bg5 Nf6 10.Nd5 O-O 11.Bxf6 Bxf6 12.Nxf6+ exf6 13.c3 Kg7 14.Rad1 Qb6 
15.Bxc6 bxc6 16.Rd2 Rfe8 17.d4 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.23"]
[Round "7"]
[White "Lombardy, William James"]
[Black "Knaak, Rainer"]
[WhiteElo "2520"]
[BlackElo "2515"]
[Result "0-1"]
[ECO "A30"]
[EventDate "1974.07.16"]
[PlyCount "82"]

1.Nf3 Nf6 2.c4 b6 3.g3 Bb7 4.Bg2 c5 5.O-O g6 6.b3 Bg7 7.Bb2 O-O 8.e3 d5 9.
Qe2 dxc4 10.bxc4 Nc6 11.Rd1 Rc8 12.Nc3 Ne4 13.d4 Nxc3 14.Bxc3 Qc7 15.Rac1 
cxd4 16.exd4 Ba6 17.d5 Bxc3 18.dxc6 Bf6 19.Ne1 Rcd8 20.Nd3 e6 21.Nb4 Bc8 
22.Nc2 Qe7 23.Qe3 Bg5 24.f4 Bf6 25.Ne1 Qb4 26.Nd3 Qa3 27.Qe2 Rd4 28.Ne5 
Rfd8 29.Bf3 Kg7 30.Rxd4 Rxd4 31.Re1 Qc5 32.Kg2 Qa5 33.Rd1 Rxd1 34.Qxd1 
Qxa2+ 35.Kh3 Qa3 36.c7 Qe7 37.Qa4 Qxc7 38.Qe8 Bxe5 39.fxe5 Ba6 40.Bc6 Bxc4
41.g4 Qxe5 0-1

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.23"]
[Round "7"]
[White "Planinc, Albin"]
[Black "Langeweg, Christian"]
[WhiteElo "2545"]
[BlackElo "2390"]
[Result "1/2-1/2"]
[ECO "B89"]
[EventDate "1974.07.16"]
[PlyCount "88"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 d6 6.Be3 Nf6 7.Bc4 Be7 8.Qe2 
a6 9.O-O-O Qc7 10.Bb3 O-O 11.g4 Nxd4 12.Rxd4 b5 13.g5 Nd7 14.f4 Nc5 15.f5 
exf5 16.Nd5 Qd8 17.exf5 Bxf5 18.Rf1 Be6 19.Qh5 Nxb3+ 20.axb3 Bxd5 21.Rxd5 
Qd7 22.Bd4 Qe6 23.Rdf5 Rac8 24.Qf3 g6 25.Rd5 f5 26.gxf6 Bxf6 27.Bxf6 Rxf6 
28.Qxf6 Qxd5 29.Re1 Rf8 30.Qe6+ Qxe6 31.Rxe6 Rf1+ 32.Kd2 Rf2+ 33.Kd3 Rxh2 
34.Rxd6 g5 35.Rxa6 g4 36.Ra5 g3 37.Rxb5 g2 38.Rg5+ Kf7 39.Ke4 h6 40.Rg3 h5
41.Kf3 g1=R 42.Rxg1 Rxc2 43.Rb1 Ke6 44.Ke4 Rh2 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.23"]
[Round "7"]
[White "Ree, Hans"]
[Black "Geller, Efim"]
[WhiteElo "2425"]
[BlackElo "2610"]
[Result "1/2-1/2"]
[ECO "D35"]
[EventDate "1974.07.16"]
[PlyCount "58"]

1.c4 Nf6 2.Nc3 e6 3.Nf3 d5 4.cxd5 exd5 5.d4 c6 6.Bg5 Be7 7.e3 Bf5 8.Bd3 
Bxd3 9.Bxf6 Bxf6 10.Qxd3 O-O 11.O-O Be7 12.Rab1 a5 13.a3 Nd7 14.b4 axb4 
15.axb4 b5 16.e4 Nb6 17.Ne5 Rc8 18.Rfe1 Re8 19.Qf3 Bf6 20.exd5 Bxe5 21.
dxe5 Nxd5 22.Rbd1 Qe7 23.Nxd5 cxd5 24.Qxd5 Qxb4 25.Rb1 Qc5 26.Rxb5 Qxd5 
27.Rxd5 f6 28.f4 fxe5 29.fxe5 Rcd8 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.23"]
[Round "7"]
[White "Ribli, Zoltan"]
[Black "Kaplan, Julio"]
[WhiteElo "2525"]
[BlackElo "2460"]
[Result "1/2-1/2"]
[ECO "A39"]
[EventDate "1974.07.16"]
[PlyCount "98"]

1.c4 g6 2.d4 Bg7 3.Nf3 Nf6 4.g3 O-O 5.Bg2 c5 6.Nc3 cxd4 7.Nxd4 Nc6 8.O-O 
Nxd4 9.Qxd4 d6 10.Qd3 Bf5 11.e4 Be6 12.Bd2 Nd7 13.b3 a6 14.Rfd1 Ne5 15.Qe2
b5 16.cxb5 axb5 17.Qxb5 Bg4 18.Rdc1 f5 19.exf5 Ra5 20.Qb7 Nd3 21.Nd5 Nxc1 
22.Rxc1 Rxa2 23.Bg5 Qa5 24.Qxe7 Rxf2 25.Kxf2 Bd4+ 26.Kf1 Bxf5 27.Be3 Be4+ 
28.Kg1 Qxd5 29.Bxe4 Bxe3+ 30.Kh1 Qe5 31.Qxe5 dxe5 32.Kg2 Rd8 33.Rc7 Bb6 
34.Rb7 Bd4 35.b4 Rd6 36.b5 Rb6 37.Bd5+ Kf8 38.Rf7+ Kg8 39.Rd7+ Kh8 40.Bc6 
Rb8 41.Kf3 Rf8+ 42.Ke4 Rf2 43.Rxd4 exd4 44.b6 Rxh2 45.b7 Rb2 46.Kxd4 h5 
47.Kc5 Rxb7 48.Bxb7 g5 49.Kd4 g4 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.23"]
[Round "7"]
[White "Timman, Jan"]
[Black "Sosonko, Gennadi"]
[WhiteElo "2540"]
[BlackElo "2450"]
[Result "1/2-1/2"]
[ECO "A14"]
[EventDate "1974.07.16"]
[PlyCount "80"]

1.Nf3 d5 2.c4 e6 3.g3 Nf6 4.b3 Be7 5.Bg2 O-O 6.O-O c5 7.Bb2 Nc6 8.cxd5 
exd5 9.d4 Ne4 10.Nc3 Bf6 11.Na4 cxd4 12.Nxd4 Bd7 13.e3 Rc8 14.Rc1 Qe7 15.
Ne2 Bxb2 16.Nxb2 Be6 17.Nd3 Rfd8 18.Ndf4 Qf6 19.h4 h6 20.Nxe6 Qxe6 21.Nd4 
Qf6 22.Qg4 Re8 23.Bxe4 dxe4 24.Rc4 Rcd8 25.Nxc6 bxc6 26.Rxe4 Rxe4 27.Qxe4 
Rd2 28.Qa4 Qe7 29.Qxc6 Rxa2 30.Rd1 Qf6 31.Qxf6 gxf6 32.Kg2 Kg7 33.Rd5 a5 
34.Kf3 a4 35.bxa4 Rxa4 36.g4 Ra1 37.Kf4 Rh1 38.Kg3 Rg1+ 39.Kf4 Rh1 40.h5 
Rf1 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.23"]
[Round "7"]
[White "Velimirovic, Dragoljub"]
[Black "Tukmakov, Vladimir"]
[WhiteElo "2530"]
[BlackElo "2570"]
[Result "0-1"]
[ECO "B87"]
[EventDate "1974.07.16"]
[PlyCount "54"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bc4 e6 7.Bb3 b5 8.O-O Be7
9.Qf3 Qc7 10.a3 Nc6 11.Nxc6 Qxc6 12.Re1 O-O 13.Qg3 Kh8 14.Bg5 Nh5 15.Qh4 
Bxg5 16.Qxg5 Nf6 17.Rad1 Bb7 18.Rd3 Rad8 19.Rf3 Qc5 20.Nd5 exd5 21.Rxf6 
dxe4 22.Rf5 d5 23.Re3 f6 24.Qh4 Qe7 25.Rg3 g5 26.Qh5 Qe6 27.Rh3 Qxf5 0-1

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.24"]
[Round "8"]
[White "Geller, Efim"]
[Black "Lombardy, William James"]
[WhiteElo "2610"]
[BlackElo "2520"]
[Result "1-0"]
[ECO "B83"]
[EventDate "1974.07.16"]
[PlyCount "114"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 Nc6 7.Be3 Be7 8.f4 
O-O 9.O-O Bd7 10.Nb3 Qc7 11.Kh1 Rfd8 12.Qe1 Nb4 13.Rc1 Bc6 14.Nd4 a5 15.
Bf3 d5 16.e5 Ne4 17.Nxc6 Qxc6 18.Bxe4 dxe4 19.Bg1 Qc4 20.b3 Qc6 21.a4 Bh4 
22.Qe3 Nd5 23.Nxd5 exd5 24.c3 Be7 25.f5 Rac8 26.Qg3 Ba3 27.Bd4 Bxc1 28.e6 
f6 29.Bxf6 Bh6 30.Bxd8 Rxd8 31.e7 Re8 32.f6 Qe6 33.f7+ Qxf7 34.Rxf7 Kxf7 
35.Kg1 Rxe7 36.Kf1 Ke6 37.Ke2 e3 38.Qb8 Rf7 39.Qc8+ Ke5 40.Qe8+ Kf6 41.
Qd8+ Ke6 42.Qe8+ Re7 43.Qc8+ Kd6 44.h4 g6 45.Qd8+ Ke6 46.Qb6+ Ke5 47.g4 
Rf7 48.g5 Bg7 49.Kxe3 Re7 50.Kd3 Rf7 51.Qxa5 Rf3+ 52.Ke2 Rf7 53.Qd8 Ke6 
54.Qb6+ Kf5 55.Kd3 Be5 56.Qd8 Ke6 57.Qe8+ Re7 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.24"]
[Round "8"]
[White "Ivkov, Borislav"]
[Black "Planinc, Albin"]
[WhiteElo "2530"]
[BlackElo "2545"]
[Result "1/2-1/2"]
[ECO "C41"]
[EventDate "1974.07.16"]
[PlyCount "52"]

1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7 5.Bc4 Be7 6.O-O O-O 7.Re1 c6 8.a4 a5 
9.h3 exd4 10.Nxd4 Nc5 11.Bf4 Qb6 12.Nb3 Be6 13.Bxe6 Nxe6 14.Be3 Qc7 15.Nd4
Nxd4 16.Bxd4 Rad8 17.Qf3 Nd7 18.Rad1 Rfe8 19.Qg3 Bf6 20.Bxf6 Nxf6 21.e5 
dxe5 22.Rxd8 Rxd8 23.Qxe5 Qxe5 24.Rxe5 b6 25.Kf1 Kf8 26.Ke2 Nd7 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.24"]
[Round "8"]
[White "Kaplan, Julio"]
[Black "Donner, Jan"]
[WhiteElo "2460"]
[BlackElo "2495"]
[Result "1/2-1/2"]
[ECO "E68"]
[EventDate "1974.07.16"]
[PlyCount "51"]

1.c4 Nf6 2.Nf3 g6 3.g3 Bg7 4.Bg2 O-O 5.d4 d6 6.Nc3 Nbd7 7.O-O e5 8.e4 Re8 
9.d5 Nc5 10.Re1 a5 11.b3 Nfd7 12.Qc2 Nf8 13.Be3 f5 14.exf5 gxf5 15.Ng5 e4 
16.Rad1 a4 17.b4 Nd3 18.Rxd3 exd3 19.Qxd3 h6 20.Ne6 Nxe6 21.dxe6 c6 22.
Qxf5 Bxe6 23.Qd3 Qe7 24.b5 Rac8 25.bxc6 bxc6 26.Nxa4 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.24"]
[Round "8"]
[White "Knaak, Rainer"]
[Black "Ribli, Zoltan"]
[WhiteElo "2515"]
[BlackElo "2525"]
[Result "1/2-1/2"]
[ECO "D87"]
[EventDate "1974.07.16"]
[PlyCount "101"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Bc4 c5 8.Ne2 
O-O 9.O-O Nc6 10.Be3 Qc7 11.Rc1 Rd8 12.Bf4 Qd7 13.dxc5 Qe8 14.Bd5 Ne5 15.
Qb3 e6 16.Bxb7 Bxb7 17.Qxb7 Nd3 18.Rcd1 Nxc5 19.Qb1 Qc6 20.f3 Na4 21.Be3 
Rdc8 22.Rd3 Rab8 23.Qc1 Qa6 24.Qd2 Rb2 25.Qd1 Rxa2 26.Re1 Nb2 27.Rd8+ Bf8 
28.Qd7 Rxd8 29.Qxd8 Nd3 30.Rd1 Rxe2 31.Bh6 Qb6+ 32.Qxb6 axb6 33.Bxf8 Kxf8 
34.Rxd3 Ke7 35.Rd4 Rb2 36.e5 b5 37.Rd6 g5 38.Rb6 h5 39.Rb7+ Kf8 40.c4 b4 
41.c5 Rc2 42.Rxb4 Rxc5 43.Re4 Kg7 44.h4 gxh4 45.Kh2 Kg6 46.Kh3 Rc2 47.Rxh4
Re2 48.Re4 Rxe4 49.fxe4 Kh6 50.Kh4 Kg6 51.g4 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.24"]
[Round "8"]
[White "Langeweg, Christian"]
[Black "Velimirovic, Dragoljub"]
[WhiteElo "2390"]
[BlackElo "2530"]
[Result "1-0"]
[ECO "B38"]
[EventDate "1974.07.16"]
[PlyCount "79"]

1.c4 g6 2.d4 Bg7 3.e4 c5 4.Nf3 cxd4 5.Nxd4 Nc6 6.Be3 d6 7.Be2 Nh6 8.Qd2 
Ng4 9.Bxg4 Bxg4 10.Nc3 O-O 11.O-O Bd7 12.f4 Rc8 13.b3 Qa5 14.Rac1 f5 15.
exf5 gxf5 16.Nde2 Be6 17.Ng3 Rfd8 18.Rfd1 Bf7 19.Nb5 Qxd2 20.Rxd2 a6 21.
Nc3 e6 22.Bb6 Rd7 23.Na4 Nb8 24.Rcd1 Rc6 25.Ba7 Rd8 26.Bb6 Rd7 27.Kf1 Bf8 
28.Rd3 Be7 29.R1d2 Kf8 30.Ne2 Rc8 31.Bf2 Re8 32.c5 d5 33.Nd4 Rc7 34.Re2 
Bf6 35.b4 Nc6 36.Nxc6 bxc6 37.Bd4 Bxd4 38.Rxd4 Rb8 39.a3 Ke7 40.Nb6 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.24"]
[Round "8"]
[White "Sosonko, Gennadi"]
[Black "Csom, Istvan"]
[WhiteElo "2450"]
[BlackElo "2540"]
[Result "1/2-1/2"]
[ECO "E07"]
[EventDate "1974.07.16"]
[PlyCount "89"]

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 c6 6.O-O O-O 7.Nc3 Nbd7 8.Qd3 b6 
9.e4 Ba6 10.b3 Qc8 11.a4 Rd8 12.Bg5 h6 13.Bf4 Bb4 14.exd5 cxd5 15.Nb5 Qb7 
16.Rfc1 Rac8 17.Rc2 Qa8 18.Qe2 Nf8 19.Nc7 Qb7 20.Nxa6 Qxa6 21.Ne5 Bd6 22.
Qf3 dxc4 23.bxc4 Bxe5 24.Bxe5 N6d7 25.Bf4 Nf6 26.Be5 N6d7 27.Qb7 Qxb7 28.
Bxb7 Nxe5 29.Bxc8 Nf3+ 30.Kg2 Nxd4 31.Rd2 e5 32.Bb7 Rb8 33.Rxd4 exd4 34.
Bd5 Ne6 35.f4 Nc5 36.a5 Nb3 37.axb6 Nxa1 38.bxa7 Rd8 39.a8=Q Rxa8 40.Bxa8 
Nb3 41.Be4 g6 42.Bd5 Kg7 43.Kf3 Nc5 44.h4 f6 45.Ke2 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.24"]
[Round "8"]
[White "Timman, Jan"]
[Black "Jansa, Vlastimil"]
[WhiteElo "2540"]
[BlackElo "2535"]
[Result "1-0"]
[ECO "A16"]
[EventDate "1974.07.16"]
[PlyCount "63"]

1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.g3 g6 5.Bg2 Nb6 6.d3 Bg7 7.Be3 O-O 8.Qc1 
N8d7 9.Bh6 c6 10.h4 Bxh6 11.Qxh6 Ne5 12.h5 Ng4 13.Qd2 Qd4 14.Ne4 Bf5 15.
Nf3 Qg7 16.hxg6 fxg6 17.Qb4 Bxe4 18.Qxe4 Qxb2 19.O-O Nf6 20.Qe6+ Kg7 21.a4
Rfe8 22.a5 Nbd7 23.Rab1 Qa3 24.Rxb7 Qxa5 25.Rxd7 Nxd7 26.Qxd7 Qd5 27.Qc7 
Qd6 28.Qa5 Reb8 29.Qa1+ Qf6 30.Ne5 a5 31.d4 Rc8 32.Nd7 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.24"]
[Round "8"]
[White "Tukmakov, Vladimir"]
[Black "Ree, Hans"]
[WhiteElo "2570"]
[BlackElo "2425"]
[Result "1/2-1/2"]
[ECO "B81"]
[EventDate "1974.07.16"]
[PlyCount "126"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.g4 h6 7.Rg1 Nc6 8.Be2 d5 
9.exd5 exd5 10.Be3 Bb4 11.Nxc6 bxc6 12.Qd4 Qa5 13.a3 Bxc3+ 14.bxc3 Be6 15.
f4 Kf8 16.f5 Bd7 17.Qb4+ Qxb4 18.axb4 h5 19.g5 Ne4 20.Rf1 Nxc3 21.Bd3 h4 
22.Rxa7 Rxa7 23.Bxa7 Rh5 24.Bc5+ Kg8 25.Be7 f6 26.gxf6 gxf6 27.Bxf6 Ne4 
28.Rg1+ Kf7 29.Rg7+ Kxf6 30.Rxd7 Ke5 31.Bxe4 dxe4 32.f6 Kxf6 33.Rd6+ Ke5 
34.Rxc6 Kf4 35.Kf2 Rd5 36.Ke2 Rg5 37.Rf6+ Ke5 38.Rf8 Kd4 39.Rd8+ Kc3 40.
Ke3 Kxb4 41.Rh8 Rg4 42.Kd4 Kb5 43.Rh6 Ka5 44.h3 Rf4 45.Rc6 Rf2 46.Rc3 e3 
47.Kxe3 Rh2 48.Kf4 Kb4 49.Rb3+ Kc5 50.Rc3+ Kb4 51.Rb3+ Kc5 52.Kg4 Rxc2 53.
Kxh4 Kd4 54.Rb5 Ke4 55.Kg5 Rg2+ 56.Kf6 Rf2+ 57.Kg6 Rg2+ 58.Kh5 Kf4 59.h4 
Rg8 60.Rb4+ Kf5 61.Kh6 Kf6 62.Rf4+ Ke5 63.Rf7 Rh8+ 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.26"]
[Round "9"]
[White "Csom, Istvan"]
[Black "Kaplan, Julio"]
[WhiteElo "2540"]
[BlackElo "2460"]
[Result "1/2-1/2"]
[ECO "A41"]
[EventDate "1974.07.16"]
[PlyCount "99"]

1.Nf3 g6 2.d4 Bg7 3.c4 d6 4.g3 c5 5.Bg2 cxd4 6.Nxd4 Qb6 7.Nb5 a6 8.Be3 
Qa5+ 9.N5c3 Nf6 10.h3 O-O 11.Nd2 Nc6 12.a3 Be6 13.b4 Qd8 14.Nd5 Nd7 15.Rc1
Bxd5 16.cxd5 Nd4 17.Nc4 Nf5 18.Bd2 Ne5 19.Qb3 Nd4 20.Qb1 Nxc4 21.Rxc4 Rc8 
22.Rc1 Rxc1+ 23.Bxc1 Qc7 24.e3 Rc8 25.exd4 Qxc1+ 26.Qxc1 Rxc1+ 27.Kd2 Rxh1
28.Bxh1 Bxd4 29.f3 b5 30.Bg2 Bb2 31.a4 bxa4 32.Kc2 Ba3 33.Kc3 Bc1 34.Bf1 
a3 35.Bc4 Kg7 36.Kb3 Kf6 37.Bxa6 Ke5 38.Bb5 Kd4 39.Be8 f6 40.Bf7 Kd3 41.
Bg8 Ke2 42.Bxh7 Kxf3 43.Bxg6 Kxg3 44.Bf5 Kf4 45.Be6 f5 46.b5 Be3 47.Kxa3 
Ke5 48.Kb3 f4 49.Kc2 f3 50.Kd1 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.26"]
[Round "9"]
[White "Donner, Jan"]
[Black "Knaak, Rainer"]
[WhiteElo "2495"]
[BlackElo "2515"]
[Result "1-0"]
[ECO "E59"]
[EventDate "1974.07.16"]
[PlyCount "75"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 c5 6.Nf3 d5 7.O-O Nc6 8.a3 Bxc3 
9.bxc3 dxc4 10.Bxc4 Qc7 11.Bd3 e5 12.Qc2 Re8 13.dxe5 Nxe5 14.Nxe5 Qxe5 15.
f3 Bd7 16.a4 Rad8 17.Re1 Bc6 18.e4 Nd5 19.Bd2 Nf4 20.Bf1 Rd6 21.Be3 Red8 
22.Red1 h5 23.Rxd6 Rxd6 24.Rd1 Rg6 25.Qd2 Ne6 26.Bd3 Rf6 27.Bc2 h4 28.h3 
g5 29.Bb3 Nf4 30.Bd5 Bxa4 31.Ra1 Bc6 32.Rxa7 Bxd5 33.exd5 Rb6 34.Ra1 Rd6 
35.Bxf4 gxf4 36.Re1 Qg5 37.c4 Qf6 38.Re4 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.26"]
[Round "9"]
[White "Jansa, Vlastimil"]
[Black "Sosonko, Gennadi"]
[WhiteElo "2535"]
[BlackElo "2450"]
[Result "1-0"]
[ECO "A36"]
[EventDate "1974.07.16"]
[PlyCount "69"]

1.g3 g6 2.Bg2 Bg7 3.c4 c5 4.Nc3 Nc6 5.a3 Nf6 6.Rb1 a5 7.Nf3 d5 8.cxd5 Nxd5
9.Qa4 Nc7 10.d3 O-O 11.Ne4 Ne6 12.b4 cxb4 13.axb4 Nxb4 14.Ba3 Na6 15.Qb3 
Bd7 16.Qb6 Bc6 17.O-O Qd7 18.Ned2 a4 19.Nc4 Nd4 20.Nxd4 Bxd4 21.Bxc6 bxc6 
22.Qb7 Ra7 23.Qxd7 Rxd7 24.Rfc1 Rb8 25.Rxb8+ Nxb8 26.e3 Ba7 27.Ne5 Rd8 28.
Nxc6 Nxc6 29.Rxc6 e5 30.Ra6 Rd7 31.Rxa4 Bb6 32.Ra8+ Kg7 33.Bf8+ Kf6 34.Ra6
Rb7 35.Bc5 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.26"]
[Round "9"]
[White "Lombardy, William James"]
[Black "Tukmakov, Vladimir"]
[WhiteElo "2520"]
[BlackElo "2570"]
[Result "1/2-1/2"]
[ECO "A16"]
[EventDate "1974.07.16"]
[PlyCount "44"]

1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.g3 g6 5.Bg2 Nxc3 6.bxc3 Bg7 7.Rb1 Nd7 8.
Nf3 O-O 9.O-O Nb6 10.Qc2 Bd7 11.Nd4 Ba4 12.Nb3 c5 13.c4 Qc7 14.d3 Nd7 15.
Bf4 e5 16.Bd2 Rac8 17.Qc1 b6 18.Bh6 Bc6 19.Bxc6 Qxc6 20.Bxg7 Kxg7 21.Nd2 
f5 22.Qb2 Kg8 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.26"]
[Round "9"]
[White "Planinc, Albin"]
[Black "Timman, Jan"]
[WhiteElo "2545"]
[BlackElo "2540"]
[Result "1-0"]
[ECO "C19"]
[EventDate "1974.07.16"]
[PlyCount "55"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.Nf3 Nbc6 8.Be2 
Qa5 9.Bd2 c4 10.Ng5 h6 11.Nh3 Ng6 12.Bh5 Nce7 13.a4 Bd7 14.O-O O-O-O 15.
Qe1 Kb8 16.Bc1 Rc8 17.Ba3 Qd8 18.a5 Rg8 19.Qc1 Rc6 20.a6 b6 21.f4 f5 22.
exf6 gxf6 23.f5 Nxf5 24.Rxf5 exf5 25.Qxh6 f4 26.Bxg6 Bxh3 27.Qxh3 Rxg6 28.
Qh7 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.26"]
[Round "9"]
[White "Ree, Hans"]
[Black "Langeweg, Christian"]
[WhiteElo "2425"]
[BlackElo "2390"]
[Result "1-0"]
[ECO "B51"]
[EventDate "1974.07.16"]
[PlyCount "83"]

1.e4 c5 2.Nf3 d6 3.Bb5+ Nc6 4.O-O Bg4 5.Re1 e6 6.Bxc6+ bxc6 7.d3 Nf6 8.h3 
Bh5 9.Nbd2 Nd7 10.b3 Be7 11.Bb2 O-O 12.Qe2 Qc7 13.Qe3 f6 14.Nh2 Bf7 15.f4 
d5 16.Ng4 Rae8 17.e5 f5 18.Nh2 h6 19.g4 Bg6 20.Re2 Bh7 21.Rg2 fxg4 22.Nxg4
Kh8 23.Kh1 Rf7 24.Rag1 Qd8 25.Bc1 Ref8 26.Rf1 Rf5 27.Qg3 Bh4 28.Qh2 Qe8 
29.Ne3 R5f7 30.Ng4 Rf5 31.Ne3 Rh5 32.Nf3 Bd8 33.Rfg1 Rf7 34.Qg3 Bf5 35.
Nxf5 Rhxf5 36.Qg4 Qf8 37.Nh2 Qe7 38.Nf1 h5 39.Qe2 h4 40.Ne3 Rxf4 41.Qh5+ 
Kg8 42.Ng4 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.26"]
[Round "9"]
[White "Ribli, Zoltan"]
[Black "Geller, Efim"]
[WhiteElo "2525"]
[BlackElo "2610"]
[Result "1/2-1/2"]
[ECO "A15"]
[EventDate "1974.07.16"]
[PlyCount "28"]

1.c4 Nf6 2.Nf3 b6 3.g3 Bb7 4.Bg2 g6 5.b3 Bg7 6.Bb2 O-O 7.O-O d6 8.d4 Nbd7 
9.Nc3 Ne4 10.Qc2 Nxc3 11.Bxc3 Nf6 12.Rfe1 Be4 13.Qb2 c6 14.a4 a5 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.26"]
[Round "9"]
[White "Velimirovic, Dragoljub"]
[Black "Ivkov, Borislav"]
[WhiteElo "2530"]
[BlackElo "2530"]
[Result "1/2-1/2"]
[ECO "C21"]
[EventDate "1974.07.16"]
[PlyCount "31"]

1.e4 e5 2.d4 d6 3.dxe5 dxe5 4.Qxd8+ Kxd8 5.Bc4 Be6 6.Bxe6 fxe6 7.Be3 Nf6 
8.f3 Nbd7 9.Nd2 Bb4 10.O-O-O Ke7 11.Ne2 b5 12.Kb1 Bc5 13.Bxc5+ Nxc5 14.Nb3
Nb7 15.c4 c6 16.Rc1 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.27"]
[Round "10"]
[White "Geller, Efim"]
[Black "Donner, Jan"]
[WhiteElo "2610"]
[BlackElo "2495"]
[Result "1/2-1/2"]
[ECO "B07"]
[EventDate "1974.07.16"]
[PlyCount "60"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f3 Bg7 5.Be3 O-O 6.Qd2 e5 7.dxe5 dxe5 8.O-O-O 
Qxd2+ 9.Rxd2 c6 10.Bc4 Re8 11.Nge2 Nfd7 12.Rhd1 Bf8 13.Kb1 Be7 14.Nc1 Kg7 
15.a4 Nf8 16.Nd3 Nbd7 17.Ba2 a5 18.Bc4 h5 19.Ne2 Nh7 20.g3 Bg5 21.Bxg5 
Nxg5 22.Ng1 f6 23.h4 Ne6 24.Bxe6 Rxe6 25.Ne2 Re8 26.Nc3 Kf7 27.Rf1 Nf8 28.
f4 exf4 29.Rxf4 Kg7 30.Rdf2 Nh7 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.27"]
[Round "10"]
[White "Ivkov, Borislav"]
[Black "Ree, Hans"]
[WhiteElo "2530"]
[BlackElo "2425"]
[Result "1-0"]
[ECO "A12"]
[EventDate "1974.07.16"]
[PlyCount "77"]

1.Nf3 Nf6 2.c4 c6 3.b3 d5 4.Bb2 Bf5 5.g3 e6 6.Bg2 Nbd7 7.O-O Bd6 8.d3 O-O 
9.Nbd2 Qe7 10.a3 a5 11.Re1 e5 12.Nh4 Be6 13.cxd5 cxd5 14.e4 dxe4 15.Nxe4 
Nxe4 16.Bxe4 Nc5 17.Nf5 Bxf5 18.Bxf5 a4 19.b4 Nb3 20.Rb1 Rfe8 21.d4 Qf6 
22.Be4 Rab8 23.dxe5 Bxe5 24.Bxe5 Rxe5 25.Bxb7 g6 26.Rxe5 Qxe5 27.Qd7 Nd4 
28.Rd1 Ne6 29.Bg2 Qb2 30.Qxa4 Nd4 31.Re1 Kg7 32.Qd1 Rd8 33.Qa1 Qb3 34.Rd1 
Qc4 35.b5 Qc5 36.b6 f6 37.b7 Nc2 38.Qb1 Nxa3 39.b8=Q 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.27"]
[Round "10"]
[White "Jansa, Vlastimil"]
[Black "Planinc, Albin"]
[WhiteElo "2535"]
[BlackElo "2545"]
[Result "1-0"]
[ECO "B84"]
[EventDate "1974.07.16"]
[PlyCount "55"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 a6 7.O-O Nbd7 8.f4 b5
9.Bf3 Bb7 10.e5 Bxf3 11.Nxf3 dxe5 12.fxe5 Ng4 13.Qe2 Rc8 14.Bf4 Qb6+ 15.
Kh1 Be7 16.Rad1 Nf8 17.Ng5 Nh6 18.Nge4 Nf5 19.g4 Nh4 20.Bg5 Nfg6 21.Bxe7 
Kxe7 22.Nd6 Qc6+ 23.Kg1 Qc5+ 24.Kh1 Qc6+ 25.Nce4 Nxe5 26.Qe3 f6 27.Qa3 
Rcd8 28.Nf5+ 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.27"]
[Round "10"]
[White "Knaak, Rainer"]
[Black "Csom, Istvan"]
[WhiteElo "2515"]
[BlackElo "2540"]
[Result "1/2-1/2"]
[ECO "E41"]
[EventDate "1974.07.16"]
[PlyCount "63"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 Nc6 6.Nf3 Bxc3+ 7.bxc3 d6 8.e4 e5
9.d5 Ne7 10.Nh4 h6 11.f4 Ng6 12.Nxg6 fxg6 13.O-O O-O 14.f5 gxf5 15.exf5 
Qe7 16.Qe2 b6 17.Bd2 Ba6 18.Be4 Rf7 19.Rf2 Raf8 20.g4 Nxe4 21.Qxe4 Qh4 22.
Raf1 h5 23.Rg2 hxg4 24.Rxg4 Qh7 25.Rh4 Rxf5 26.Rxh7 Rxf1+ 27.Kg2 R8f2+ 28.
Kg3 Rf3+ 29.Kg2 R3f2+ 30.Kg3 Rf3+ 31.Kg2 R3f2+ 32.Kg3 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.27"]
[Round "10"]
[White "Langeweg, Christian"]
[Black "Lombardy, William James"]
[WhiteElo "2390"]
[BlackElo "2520"]
[Result "1/2-1/2"]
[ECO "A88"]
[EventDate "1974.07.16"]
[PlyCount "38"]

1.Nf3 f5 2.g3 Nf6 3.Bg2 g6 4.d4 Bg7 5.O-O O-O 6.c4 d6 7.Nc3 c6 8.d5 Qa5 9.
Rb1 Qa6 10.b3 Bd7 11.Bb2 Qb6 12.Ne1 Na6 13.Nd3 e5 14.dxe6 Bxe6 15.e4 Rad8 
16.Qd2 fxe4 17.Nxe4 Nxe4 18.Bxe4 Bxb2 19.Rxb2 Nc5 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.27"]
[Round "10"]
[White "Sosonko, Gennadi"]
[Black "Kaplan, Julio"]
[WhiteElo "2450"]
[BlackElo "2460"]
[Result "1/2-1/2"]
[ECO "E94"]
[EventDate "1974.07.16"]
[PlyCount "29"]

1.d4 Nf6 2.Nf3 g6 3.c4 Bg7 4.Nc3 O-O 5.e4 d6 6.Be2 e5 7.O-O exd4 8.Nxd4 
Re8 9.f3 c6 10.Kh1 d5 11.cxd5 cxd5 12.Bg5 Nc6 13.exd5 Nxd4 14.Qxd4 Nxd5 
15.Qxd5 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.27"]
[Round "10"]
[White "Timman, Jan"]
[Black "Velimirovic, Dragoljub"]
[WhiteElo "2540"]
[BlackElo "2530"]
[Result "1-0"]
[ECO "A30"]
[EventDate "1974.07.16"]
[PlyCount "68"]

1.c4 c5 2.b3 Nc6 3.Bb2 e5 4.Nc3 d6 5.g3 g6 6.Bg2 Bg7 7.e3 Nge7 8.d3 h5 9.
Nf3 Nf5 10.h3 Be6 11.Nd5 h4 12.g4 Nh6 13.a3 f5 14.gxf5 gxf5 15.Rg1 Bf6 16.
Bh1 Bxd5 17.cxd5 Ne7 18.Ng5 Bxg5 19.Rxg5 Nf7 20.Rh5 Rxh5 21.Qxh5 Qa5+ 22.
Kd1 Qb5 23.Kc2 e4 24.dxe4 c4 25.b4 a5 26.a4 Qxb4 27.Bc3 Qb3+ 28.Kd2 b5 29.
axb5 Qxb5 30.exf5 Rb8 31.f6 Nc6 32.Be4 Nd8 33.Rb1 Qxb1 34.Bxb1 Rxb1 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.27"]
[Round "10"]
[White "Tukmakov, Vladimir"]
[Black "Ribli, Zoltan"]
[WhiteElo "2570"]
[BlackElo "2525"]
[Result "1/2-1/2"]
[ECO "B85"]
[EventDate "1974.07.16"]
[PlyCount "37"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e6 7.O-O Be7 8.f4 Qc7
9.a4 Nc6 10.Be3 O-O 11.Kh1 Re8 12.Qe1 Nxd4 13.Bxd4 e5 14.Be3 exf4 15.Bxf4 
Be6 16.Qd2 Rad8 17.Bf3 Nd7 18.Nd5 Bxd5 19.exd5 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.29"]
[Round "11"]
[White "Csom, Istvan"]
[Black "Geller, Efim"]
[WhiteElo "2540"]
[BlackElo "2610"]
[Result "1/2-1/2"]
[ECO "E68"]
[EventDate "1974.07.16"]
[PlyCount "63"]

1.c4 g6 2.d4 Bg7 3.Nf3 Nf6 4.g3 O-O 5.Bg2 d6 6.Nc3 Nbd7 7.O-O e5 8.e4 c6 
9.Rb1 a6 10.Qc2 b5 11.Rd1 Qe7 12.dxe5 Nxe5 13.Nxe5 dxe5 14.b4 Bg4 15.f3 
Be6 16.Be3 Rfd8 17.Rxd8+ Rxd8 18.Bf1 Bxc4 19.Bxc4 bxc4 20.Nd1 Qe6 21.Nb2 
c3 22.Na4 h5 23.Nc5 Qc4 24.Rb3 Bf8 25.Rxc3 Rd1+ 26.Qxd1 Qxc3 27.Qd2 Qxd2 
28.Bxd2 Bxc5+ 29.bxc5 Nd7 30.Bc3 f5 31.Kf2 Kf7 32.Ke2 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.29"]
[Round "11"]
[White "Donner, Jan"]
[Black "Tukmakov, Vladimir"]
[WhiteElo "2495"]
[BlackElo "2570"]
[Result "0-1"]
[ECO "E62"]
[EventDate "1974.07.16"]
[PlyCount "104"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 d6 6.Nc3 c6 7.O-O Qa5 8.Nd2 Qh5 
9.e4 Qxd1 10.Rxd1 Nfd7 11.Nf3 a6 12.Be3 b5 13.Nd2 Nb6 14.c5 dxc5 15.dxc5 
N6d7 16.Rac1 a5 17.a3 a4 18.Rc2 Na6 19.Ne2 Ne5 20.Nd4 Rd8 21.h3 Ra7 22.Rb1
Rad7 23.N2f3 Nxf3+ 24.Nxf3 Rd1+ 25.Rxd1 Rxd1+ 26.Kh2 Be6 27.e5 b4 28.Nd4 
b3 29.Rd2 Rxd2 30.Bxd2 Bxe5 31.Nxe6 fxe6 32.Bxc6 Bxb2 33.Bxa4 Nxc5 34.Bb5 
Bxa3 35.Bc4 b2 36.Ba2 Kf7 37.Kg2 Na4 38.Kf1 Bc5 39.g4 Kf6 40.Ke2 Bd4 41.f3
e5 42.Kd3 Nc5+ 43.Kc4 Ne6 44.h4 g5 45.hxg5+ Nxg5 46.f4 exf4 47.Bxf4 e5 48.
Bd2 Nf3 49.Bc3 Kg5 50.Kb3 Bxc3 51.Kxc3 Kxg4 52.Kxb2 h5 0-1

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.29"]
[Round "11"]
[White "Kaplan, Julio"]
[Black "Knaak, Rainer"]
[WhiteElo "2460"]
[BlackElo "2515"]
[Result "0-1"]
[ECO "C73"]
[EventDate "1974.07.16"]
[PlyCount "90"]

1.e4 Nc6 2.Nf3 e5 3.Bb5 a6 4.Ba4 d6 5.Bxc6+ bxc6 6.d4 exd4 7.Qxd4 c5 8.Qd3
Ne7 9.Nc3 Ng6 10.h4 h5 11.Bg5 Be7 12.Bxe7 Qxe7 13.Nd5 Qd8 14.O-O-O O-O 15.
Ng5 Rb8 16.f4 Bg4 17.Rdf1 c6 18.Ne3 Qa5 19.Nxg4 hxg4 20.a3 Rb7 21.Qd2 Qb5 
22.b3 c4 23.h5 Nh4 24.h6 cxb3 25.Qxd6 Re8 26.Qb4 Qe2 27.Qc3 f6 28.Re1 
Qxc2+ 29.Qxc2 bxc2 30.Rxh4 fxg5 31.Rhh1 gxf4 32.hxg7 Kxg7 33.Kxc2 Kg6 34.
e5 Rbe7 35.Re4 Kg5 36.Rf1 Rxe5 37.Rexf4 Re2+ 38.Kd3 Rxg2 39.Rc4 Rg3+ 40.
Kd2 Rxa3 41.Rxc6 g3 42.Rf7 Kg4 43.Rh6 Ra2+ 44.Kd3 Rg8 45.Rh1 Rf2 0-1

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.29"]
[Round "11"]
[White "Lombardy, William James"]
[Black "Ivkov, Borislav"]
[WhiteElo "2520"]
[BlackElo "2530"]
[Result "0-1"]
[ECO "D00"]
[EventDate "1974.07.16"]
[PlyCount "98"]

1.d4 Nf6 2.Bg5 d5 3.Bxf6 gxf6 4.e3 c5 5.dxc5 e6 6.c4 dxc4 7.Qxd8+ Kxd8 8.
Bxc4 Bxc5 9.Nc3 Ke7 10.Rc1 Bd7 11.Bb5 Rc8 12.Bxd7 Nxd7 13.Nge2 Ne5 14.O-O 
a6 15.Na4 Bd6 16.Rxc8 Rxc8 17.Rc1 Rd8 18.Nd4 Nd3 19.Rc3 Nb4 20.a3 Nd5 21.
Rc1 f5 22.Nf3 b5 23.Nc5 Bxc5 24.Rxc5 Nf4 25.Rc7+ Kf6 26.h4 Rd1+ 27.Kh2 Nd3
28.Ng5 h6 29.Nxf7 Nxf2 30.Nxh6 Rh1+ 31.Kg3 Ne4+ 32.Kf3 Rxh4 33.Ng8+ Ke5 
34.Ne7 Rg4 35.Ra7 Rg3+ 36.Ke2 Rxg2+ 37.Kf1 Rxb2 38.Nc6+ Kd6 39.Nb4 Nc5 40.
Nxa6 Nxa6 41.Rxa6+ Kd5 42.e4+ fxe4 43.Ke1 e5 44.Rb6 Kc5 45.Re6 Kd4 46.Rb6 
Kd3 47.Kf1 Rb1+ 48.Kg2 e3 49.Rxb5 Rxb5 0-1

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.29"]
[Round "11"]
[White "Planinc, Albin"]
[Black "Sosonko, Gennadi"]
[WhiteElo "2545"]
[BlackElo "2450"]
[Result "1/2-1/2"]
[ECO "A08"]
[EventDate "1974.07.16"]
[PlyCount "85"]

1.g3 Nf6 2.Bg2 d5 3.d3 c5 4.Nf3 Nc6 5.O-O g6 6.Nbd2 Bg7 7.e4 O-O 8.Re1 d4 
9.e5 Nd5 10.a4 Rb8 11.Nc4 b6 12.Bd2 a6 13.Ng5 h6 14.Ne4 Ncb4 15.f4 Qc7 16.
Nf2 Rd8 17.c3 Nc6 18.Qf3 dxc3 19.bxc3 b5 20.axb5 axb5 21.Nd6 exd6 22.Qxd5 
Ne7 23.Qf3 Bb7 24.Ra7 Bxf3 25.Rxc7 Nd5 26.exd6 Bxg2 27.Kxg2 Bxc3 28.Bxc3 
Nxc3 29.Ree7 Nd5 30.Ne4 Nxe7 31.dxe7 Re8 32.Nf6+ Kg7 33.Nxe8+ Rxe8 34.Rxc5
Rxe7 35.Rxb5 Re2+ 36.Kh3 Rd2 37.Rd5 h5 38.d4 Kf6 39.g4 hxg4+ 40.Kxg4 Rxh2 
41.Kf3 Ke6 42.Re5+ Kd6 43.f5 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.29"]
[Round "11"]
[White "Ree, Hans"]
[Black "Timman, Jan"]
[WhiteElo "2425"]
[BlackElo "2540"]
[Result "1/2-1/2"]
[ECO "A30"]
[EventDate "1974.07.16"]
[PlyCount "27"]

1.c4 Nf6 2.Nf3 b6 3.g3 Bb7 4.Bg2 c5 5.O-O g6 6.b3 Bg7 7.Bb2 O-O 8.Nc3 d6 
9.d4 Ne4 10.Qd3 Nxc3 11.Bxc3 cxd4 12.Nxd4 Bxg2 13.Kxg2 Na6 14.Rfd1 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.29"]
[Round "11"]
[White "Ribli, Zoltan"]
[Black "Langeweg, Christian"]
[WhiteElo "2525"]
[BlackElo "2390"]
[Result "1-0"]
[ECO "A14"]
[EventDate "1974.07.16"]
[PlyCount "81"]

1.c4 Nf6 2.Nf3 e6 3.b3 d5 4.Bb2 Be7 5.g3 O-O 6.Bg2 c5 7.O-O Nc6 8.cxd5 
Nxd5 9.Nc3 Nxc3 10.Bxc3 Bd7 11.Qc1 Rc8 12.Qb2 Bf6 13.d4 cxd4 14.Nxd4 Nxd4 
15.Bxd4 Bc6 16.Bxf6 Qxf6 17.Qxf6 gxf6 18.Rac1 Bxg2 19.Kxg2 Rfd8 20.a4 Rxc1
21.Rxc1 Rd7 22.Kf3 Kg7 23.Ke3 f5 24.Rc4 Kf6 25.Rh4 Rd1 26.Rc4 Rd7 27.b4 b6
28.Rd4 Rxd4 29.Kxd4 Ke7 30.e4 Kd6 31.e5+ Kc6 32.Kc4 a5 33.f3 axb4 34.Kxb4 
Kc7 35.Kb5 Kb7 36.h3 h5 37.f4 Ka7 38.Kc6 Ka6 39.Kc7 Ka7 40.h4 Ka6 41.Kb8 
1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.29"]
[Round "11"]
[White "Velimirovic, Dragoljub"]
[Black "Jansa, Vlastimil"]
[WhiteElo "2530"]
[BlackElo "2535"]
[Result "0-1"]
[ECO "B46"]
[EventDate "1974.07.16"]
[PlyCount "96"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6 6.g3 Nge7 7.Nb3 d6 8.Bg2 
Bd7 9.O-O Nc8 10.a4 Be7 11.f4 O-O 12.Kh1 Qc7 13.g4 Re8 14.g5 Nb6 15.f5 Bf8
16.Qh5 Ne5 17.Nd4 Rac8 18.Rf4 g6 19.Qh3 Nbc4 20.Rh4 h5 21.Nde2 Ng4 22.Qg3 
Qc5 23.Rxg4 hxg4 24.b3 Ne5 25.Be3 Qa5 26.Bd2 Qc7 27.Nf4 Bg7 28.f6 Bf8 29.
h4 b5 30.axb5 axb5 31.h5 b4 32.Nce2 Qxc2 33.Be3 gxh5 34.Qh4 Bc6 35.Nd4 Qc3
36.Re1 Ra8 37.Re2 Nf3 38.Nxf3 gxf3 39.Bxf3 Ra1+ 40.Kh2 Qe5 41.Rg2 Bxe4 42.
Bxe4 Qxe4 43.g6 fxg6 44.Qg3 Kf7 45.Nxg6 Rea8 46.Nf4 R1a2 47.Qg8+ Ke8 48.
Qh8 Qxe3 0-1

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.30"]
[Round "12"]
[White "Geller, Efim"]
[Black "Kaplan, Julio"]
[WhiteElo "2610"]
[BlackElo "2460"]
[Result "1/2-1/2"]
[ECO "C67"]
[EventDate "1974.07.16"]
[PlyCount "46"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 a6 6.Bxc6 dxc6 7.Qe2 Bf5 8.Rd1
Be7 9.dxe5 Qc8 10.Nd4 Bg6 11.Be3 O-O 12.Nd2 Nxd2 13.Rxd2 c5 14.Nb3 b6 15.
Rad1 Qf5 16.Qc4 Qe4 17.Qxe4 Bxe4 18.f3 Bf5 19.Nc1 Rfd8 20.c3 Be6 21.Kf2 a5
22.Rxd8+ Bxd8 23.g3 Be7 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.30"]
[Round "12"]
[White "Ivkov, Borislav"]
[Black "Ribli, Zoltan"]
[WhiteElo "2530"]
[BlackElo "2525"]
[Result "1/2-1/2"]
[ECO "D91"]
[EventDate "1974.07.16"]
[PlyCount "23"]

1.Nf3 g6 2.d4 Nf6 3.c4 Bg7 4.Nc3 d5 5.Bg5 Ne4 6.cxd5 Nxg5 7.Nxg5 e6 8.Nf3 
exd5 9.e3 Qd6 10.Be2 O-O 11.O-O c6 12.a3 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.30"]
[Round "12"]
[White "Jansa, Vlastimil"]
[Black "Ree, Hans"]
[WhiteElo "2535"]
[BlackElo "2425"]
[Result "0-1"]
[ECO "A00"]
[EventDate "1974.07.16"]
[PlyCount "78"]

1.g3 g6 2.Bg2 c5 3.d3 Bg7 4.f4 Nc6 5.Nf3 e6 6.O-O Nge7 7.c3 O-O 8.e4 d6 9.
Be3 f5 10.Nbd2 b6 11.Re1 Qd7 12.d4 Bb7 13.Bf2 Rae8 14.Qa4 h6 15.Rad1 Qc7 
16.Qb3 Nc8 17.dxc5 dxc5 18.Nc4 Kh7 19.a4 Rd8 20.exf5 exf5 21.Re6 Rxd1+ 22.
Qxd1 Rd8 23.Qe2 Qd7 24.h3 N6e7 25.Nh4 Be4 26.Rxe4 fxe4 27.Qxe4 Re8 28.Ne5 
Qd1+ 29.Kh2 Nd6 30.Qe3 Nef5 31.Nxf5 Nxf5 32.Qe4 Qd6 33.Qb7 Re7 34.Qa8 Bxe5
35.fxe5 Qxe5 36.Bd5 Qh8 37.Qc6 Qe8 38.Qf6 Re2 39.Kg1 Rxf2 0-1

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.30"]
[Round "12"]
[White "Langeweg, Christian"]
[Black "Donner, Jan"]
[WhiteElo "2390"]
[BlackElo "2495"]
[Result "1/2-1/2"]
[ECO "A35"]
[EventDate "1974.07.16"]
[PlyCount "25"]

1.Nf3 c5 2.c4 Nc6 3.Nc3 g6 4.e3 d6 5.d4 Bg4 6.Be2 Bg7 7.O-O Nf6 8.h3 Bxf3 
9.Bxf3 Nd7 10.d5 Na5 11.Be2 Bxc3 12.bxc3 Nb6 13.Qc2 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.30"]
[Round "12"]
[White "Planinc, Albin"]
[Black "Velimirovic, Dragoljub"]
[WhiteElo "2545"]
[BlackElo "2530"]
[Result "1/2-1/2"]
[ECO "B30"]
[EventDate "1974.07.16"]
[PlyCount "35"]

1.e4 c5 2.Nf3 Nc6 3.Bb5 e6 4.O-O a6 5.Bxc6 bxc6 6.e5 Ne7 7.d3 Ng6 8.Nbd2 
Qc7 9.Re1 Be7 10.Nc4 f6 11.Bd2 O-O 12.Ba5 Qb8 13.Bc3 fxe5 14.Nfxe5 Nxe5 
15.Nxe5 Bf6 16.Qd2 Ra7 17.f4 Rb7 18.a3 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.30"]
[Round "12"]
[White "Sosonko, Gennadi"]
[Black "Knaak, Rainer"]
[WhiteElo "2450"]
[BlackElo "2515"]
[Result "1-0"]
[ECO "A57"]
[EventDate "1974.07.16"]
[PlyCount "55"]

1.d4 Nf6 2.Nf3 c5 3.d5 b5 4.c4 Bb7 5.a4 bxc4 6.Nc3 Qa5 7.Bd2 Na6 8.e4 Nb4 
9.Bxc4 Ba6 10.b3 Nd3+ 11.Ke2 Nb2 12.Nb5 Qd8 13.Qc2 Nxc4 14.bxc4 d6 15.e5 
dxe5 16.Nxe5 g6 17.Rhe1 Bg7 18.Kf1 Bb7 19.Be3 O-O 20.Bxc5 Nxd5 21.Rad1 a6 
22.Nc3 Qc7 23.Nxd5 Qxc5 24.Nd7 Qa5 25.Nxe7+ Kh8 26.Nxf8 Rxf8 27.c5 Qc7 28.
c6 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.30"]
[Round "12"]
[White "Timman, Jan"]
[Black "Lombardy, William James"]
[WhiteElo "2540"]
[BlackElo "2520"]
[Result "0-1"]
[ECO "C63"]
[EventDate "1974.07.16"]
[PlyCount "80"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.Nc3 Nf6 5.exf5 Nd4 6.Nxe5 Bc5 7.O-O O-O 8.Nf3
Nxf3+ 9.Qxf3 d5 10.Bd3 c6 11.b3 Nd7 12.Qg3 Qf6 13.Bb2 Bd4 14.Rae1 Nc5 15.
Ba3 Nxd3 16.cxd3 Bxf5 17.Be7 Qh6 18.Bxf8 Rxf8 19.Re3 Bc5 20.Nd1 d4 21.Re2 
Bd6 22.f4 Be6 23.Ref2 Rf5 24.Rf3 Bd5 25.Qg4 Qf6 26.Rh3 Bxf4 27.Rf2 h6 28.
Rh5 g5 29.g3 Be3 30.dxe3 Rxf2 31.Nxf2 dxe3 32.Nd1 Bf3 33.Rxh6 Bxg4 34.Rxf6
e2 35.Nf2 e1=Q+ 36.Kg2 Be2 37.Ne4 Qa1 38.Rf2 Bxd3 39.Nxg5 Qe5 40.Nf3 Be4 
0-1

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.30"]
[Round "12"]
[White "Tukmakov, Vladimir"]
[Black "Csom, Istvan"]
[WhiteElo "2570"]
[BlackElo "2540"]
[Result "1/2-1/2"]
[ECO "B66"]
[EventDate "1974.07.16"]
[PlyCount "75"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.O-O-O 
h6 9.Be3 Bd7 10.f4 Qc7 11.Be2 b5 12.Bf3 Rc8 13.Nb3 Be7 14.Kb1 b4 15.Na4 
Na5 16.Nb6 Nc4 17.Nxc4 Qxc4 18.e5 dxe5 19.fxe5 Nd5 20.Bxd5 exd5 21.Nd4 a5 
22.Rhf1 Qa6 23.h3 Bc5 24.Rf3 Bxd4 25.Bxd4 Qg6 26.e6 Bxe6 27.Qf2 f6 28.Re1 
Rc6 29.Rg3 Qh7 30.Rge3 Kf7 31.g4 Re8 32.R1e2 Rec8 33.b3 Qg6 34.Kb2 h5 35.
Rg3 hxg4 36.hxg4 Kg8 37.Qg2 Qg5 38.Qf3 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.31"]
[Round "13"]
[White "Csom, Istvan"]
[Black "Langeweg, Christian"]
[WhiteElo "2540"]
[BlackElo "2390"]
[Result "1/2-1/2"]
[ECO "A00"]
[EventDate "1974.07.16"]
[PlyCount "67"]

1.g3 Nf6 2.Bg2 d5 3.d3 c6 4.Nd2 e5 5.e4 Bc5 6.Ngf3 Nbd7 7.O-O O-O 8.c3 
dxe4 9.dxe4 a5 10.Qc2 b5 11.h3 Re8 12.Rd1 Qc7 13.Nf1 a4 14.Rb1 Bf8 15.Ne3 
Nc5 16.Ne1 Be6 17.b4 axb3 18.axb3 Ra6 19.Nd3 Nxd3 20.Qxd3 Ra2 21.b4 Be7 
22.Rb2 Ra1 23.Qc2 Rea8 24.Bd2 Nd7 25.Rxa1 Rxa1+ 26.Rb1 Ra2 27.Rb2 Ra1+ 28.
Rb1 Qa7 29.Kh2 Ra2 30.Rb2 Rxb2 31.Qxb2 Nb6 32.h4 Qd7 33.Bf1 g6 34.Qc2 
1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.31"]
[Round "13"]
[White "Donner, Jan"]
[Black "Ivkov, Borislav"]
[WhiteElo "2495"]
[BlackElo "2530"]
[Result "1/2-1/2"]
[ECO "E74"]
[EventDate "1974.07.16"]
[PlyCount "84"]

1.d4 Nf6 2.c4 c5 3.d5 g6 4.Nc3 d6 5.e4 Bg7 6.Be2 O-O 7.Bg5 Qa5 8.Bd2 e6 9.
Nf3 exd5 10.cxd5 Re8 11.O-O a6 12.a4 Qc7 13.Qc2 Bg4 14.h3 Bxf3 15.Bxf3 
Nbd7 16.a5 c4 17.Ra4 Ne5 18.Be2 Nfd7 19.f4 Nd3 20.Nd1 b5 21.axb6 Nxb6 22.
Ra2 Qc5+ 23.Kh1 Rxe4 24.Bxd3 cxd3 25.Qxd3 Rd4 26.Qc3 Rxd2 27.Qxd2 Qc4 28.
Qf2 Qxa2 29.Qxb6 Qxd5 30.f5 Qd3 31.Re1 Be5 32.fxg6 hxg6 33.Ne3 Qd2 34.Rb1 
a5 35.b3 Rc8 36.Nc4 Qd3 37.Re1 Qg3 38.Qg1 Bd4 39.Qf1 a4 40.Rd1 Be5 41.Nxe5
dxe5 42.bxa4 Rc2 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.31"]
[Round "13"]
[White "Kaplan, Julio"]
[Black "Tukmakov, Vladimir"]
[WhiteElo "2460"]
[BlackElo "2570"]
[Result "1/2-1/2"]
[ECO "B83"]
[EventDate "1974.07.16"]
[PlyCount "107"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 Be7 7.f4 O-O 8.O-O 
Nc6 9.Be3 Bd7 10.Nb3 Qc7 11.Bf3 Rfd8 12.g4 Be8 13.g5 Nd7 14.Bg4 d5 15.exd5
Nb6 16.Qe2 Nxd5 17.Nxd5 Rxd5 18.Bf3 Rdd8 19.Be4 Nb4 20.Rf3 g6 21.Bd4 Bc6 
22.a3 Bxe4 23.Qxe4 Nc6 24.Bc3 b5 25.h4 a5 26.h5 b4 27.axb4 axb4 28.Rxa8 
Rxa8 29.Bf6 Rc8 30.hxg6 hxg6 31.f5 Bxf6 32.gxf6 Qe5 33.Qh4 Rd8 34.fxg6 
fxg6 35.f7+ Kg7 36.Qxd8 Qe1+ 37.Kg2 Qe2+ 38.Rf2 Qxf2+ 39.Kxf2 Nxd8 40.Nd4 
Kxf7 41.Ke3 e5 42.Ne2 Ke6 43.c3 Nc6 44.Ke4 g5 45.cxb4 Nxb4 46.Nc3 g4 47.
Na4 Na6 48.Nc3 Nc5+ 49.Ke3 Nd7 50.b4 Nf6 51.Kf2 e4 52.b5 Kd6 53.Ke3 g3 54.
Ne2 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.31"]
[Round "13"]
[White "Knaak, Rainer"]
[Black "Geller, Efim"]
[WhiteElo "2515"]
[BlackElo "2610"]
[Result "1-0"]
[ECO "E88"]
[EventDate "1974.07.16"]
[PlyCount "79"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.d5 c6 8.Bd3 b5 9.
dxc6 bxc4 10.Bxc4 Nxc6 11.Nge2 Be6 12.Bb3 Qb8 13.O-O Rd8 14.Kh1 Qb7 15.Nd5
Bxd5 16.Bxd5 Nxd5 17.Qxd5 Qxb2 18.Qxc6 Qxe2 19.Bg5 Rac8 20.Qb7 Rc2 21.Rg1 
Rdc8 22.Qxa7 h6 23.Be3 R2c7 24.Qb6 Rc6 25.Rge1 Qc4 26.Qa5 Ra6 27.Qd2 Rca8 
28.Rec1 Qe6 29.Rc2 h5 30.h3 Ra4 31.Rb2 Kh7 32.Kh2 Bf8 33.Bg5 Rd4 34.Qe3 d5
35.Rb7 Bg7 36.Qb3 Ra6 37.Rf1 Rd6 38.Re7 Qc8 39.Rxf7 Rd7 40.Rc1 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.31"]
[Round "13"]
[White "Lombardy, William James"]
[Black "Jansa, Vlastimil"]
[WhiteElo "2520"]
[BlackElo "2535"]
[Result "1/2-1/2"]
[ECO "D94"]
[EventDate "1974.07.16"]
[PlyCount "40"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.e3 O-O 6.Bd2 c5 7.dxc5 Na6 8.cxd5 
Nxc5 9.Bc4 a6 10.a4 Bf5 11.O-O Rc8 12.Nd4 Bd3 13.Bxd3 Nxd3 14.Qb3 Nc5 15.
Qa2 Nce4 16.Nxe4 Nxe4 17.Bb4 a5 18.Ba3 Bxd4 19.exd4 Qd7 20.Rfe1 Nxf2 
1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.31"]
[Round "13"]
[White "Ree, Hans"]
[Black "Planinc, Albin"]
[WhiteElo "2425"]
[BlackElo "2545"]
[Result "0-1"]
[ECO "B06"]
[EventDate "1974.07.16"]
[PlyCount "68"]

1.e4 g6 2.d4 Bg7 3.Nf3 d6 4.c3 Nf6 5.Nbd2 O-O 6.Bd3 Nbd7 7.O-O e5 8.dxe5 
dxe5 9.Nc4 Qe7 10.b4 b6 11.Qc2 Bb7 12.a4 Nh5 13.a5 f5 14.a6 Bc6 15.Ncd2 
Rae8 16.exf5 gxf5 17.Bxf5 e4 18.Nd4 Bd5 19.N2b3 Qf7 20.c4 Ba8 21.Bxd7 Qxd7
22.Be3 Nf4 23.Bxf4 Rxf4 24.Rad1 e3 25.Ne2 Rxf2 26.Rxf2 exf2+ 27.Kxf2 Qg4 
28.Ng3 h5 29.Kg1 h4 30.Nf1 Be4 31.Qd2 Bh6 32.h3 Qg6 33.Qf2 Rf8 34.Qe2 Bf3 
0-1

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.31"]
[Round "13"]
[White "Ribli, Zoltan"]
[Black "Timman, Jan"]
[WhiteElo "2525"]
[BlackElo "2540"]
[Result "1-0"]
[ECO "A28"]
[EventDate "1974.07.16"]
[PlyCount "101"]

1.c4 e5 2.Nc3 Nf6 3.Nf3 Nc6 4.d3 Bb4 5.Bd2 O-O 6.e3 Re8 7.Be2 a5 8.b3 d5 
9.cxd5 Nxd5 10.Qc1 Nxc3 11.Bxc3 Bg4 12.O-O Qd6 13.a3 Bc5 14.Rd1 Bb6 15.Qb2
f6 16.Nxe5 Nxe5 17.Bxe5 Qxe5 18.Qxe5 fxe5 19.Bxg4 Bc5 20.Rdc1 Bd6 21.h4 
Ra6 22.Kf1 Rb6 23.Rc3 Kf7 24.Ke2 g6 25.g3 Kf6 26.Bf3 h6 27.Be4 c6 28.f4 
Rb5 29.a4 Rb4 30.Rb1 Re6 31.Rc4 Rb6 32.Rcc1 Rb4 33.Rf1 Kg7 34.h5 gxh5 35.
Rh1 b5 36.axb5 cxb5 37.Rxh5 a4 38.Bd5 Re8 39.Kf3 Rf8 40.Rhh1 a3 41.Ra1 Rd8
42.Rxa3 Bc5 43.e4 Rd4 44.b4 Rxb4 45.Ra6 Rd6 46.Rxd6 Bxd6 47.Rc1 Rd4 48.Ke3
Ra4 49.Rc6 Bb8 50.f5 Ra1 51.f6+ 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.07.31"]
[Round "13"]
[White "Velimirovic, Dragoljub"]
[Black "Sosonko, Gennadi"]
[WhiteElo "2530"]
[BlackElo "2450"]
[Result "1-0"]
[ECO "B50"]
[EventDate "1974.07.16"]
[PlyCount "69"]

1.e4 c5 2.Nf3 d6 3.c3 Nf6 4.Bd3 Nc6 5.Bc2 Bg4 6.h3 Bh5 7.d3 e6 8.Nbd2 Be7 
9.Qe2 d5 10.a3 Nd7 11.Nf1 Nde5 12.Ng3 Nxf3+ 13.gxf3 Bg6 14.f4 Qd7 15.h4 h5
16.b4 Bf6 17.Bb2 cxb4 18.axb4 Nxb4 19.Ba4 b5 20.cxb4 Bxb2 21.Qxb2 bxa4 22.
Qxg7 O-O-O 23.O-O Kb7 24.b5 dxe4 25.Rxa4 exd3 26.Qa1 a5 27.bxa6+ Ka8 28.a7
d2 29.Rb4 Rhg8 30.Rd1 Qd3 31.Qb2 Qa6 32.Rxd2 Kxa7 33.Qa2 Rxd2 34.Qxd2 Bd3 
35.Kh2 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.08.01"]
[Round "14"]
[White "Ivkov, Borislav"]
[Black "Csom, Istvan"]
[WhiteElo "2530"]
[BlackElo "2540"]
[Result "1/2-1/2"]
[ECO "E18"]
[EventDate "1974.07.16"]
[PlyCount "30"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Nc3 Ne4 8.Nxe4 
Bxe4 9.Ne1 Bxg2 10.Nxg2 d5 11.Qa4 dxc4 12.Qxc4 c5 13.dxc5 Bxc5 14.Ne3 Bxe3
15.Bxe3 Qc8 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.08.01"]
[Round "14"]
[White "Jansa, Vlastimil"]
[Black "Ribli, Zoltan"]
[WhiteElo "2535"]
[BlackElo "2525"]
[Result "1/2-1/2"]
[ECO "A30"]
[EventDate "1974.07.16"]
[PlyCount "37"]

1.Nf3 Nf6 2.c4 b6 3.g3 Bb7 4.Bg2 c5 5.O-O g6 6.b3 Bg7 7.Bb2 O-O 8.Nc3 d6 
9.d4 cxd4 10.Qxd4 Nbd7 11.Rac1 Rc8 12.Nd5 Re8 13.Rfd1 a6 14.Ne1 Ba8 15.Qd2
b5 16.Nxf6+ Bxf6 17.Bxf6 Nxf6 18.Bxa8 Rxa8 19.Nd3 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.08.01"]
[Round "14"]
[White "Langeweg, Christian"]
[Black "Kaplan, Julio"]
[WhiteElo "2390"]
[BlackElo "2460"]
[Result "1-0"]
[ECO "E94"]
[EventDate "1974.07.16"]
[PlyCount "139"]

1.c4 g6 2.d4 Bg7 3.e4 d6 4.Nc3 Nf6 5.Be2 O-O 6.Nf3 e5 7.O-O exd4 8.Nxd4 
Re8 9.f3 c6 10.Nc2 d5 11.cxd5 cxd5 12.exd5 Qb6+ 13.Kh1 Bf5 14.Bc4 Na6 15.
g4 Rac8 16.Bb3 Bd7 17.Re1 Qf2 18.Be3 Qh4 19.Qd2 h5 20.g5 Nh7 21.Ne4 Rxe4 
22.fxe4 Bxb2 23.Bd4 Bxa1 24.Bxa1 Qxg5 25.Qd4 f6 26.e5 Nc5 27.exf6 Nxf6 28.
Ne3 Nce4 29.d6+ Kh7 30.Nd5 Re8 31.Rxe4 Qc1+ 32.Bd1 Bc6 33.Nxf6+ Kh6 34.
Nxe8 Bxe4+ 35.Qxe4 Qxd1+ 36.Kg2 Qxa1 37.Qe3+ Kh7 38.Qe7+ Kh6 39.Qe2 Qc3 
40.Kf1 Qc1+ 41.Kg2 Qg5+ 42.Kf3 Qf5+ 43.Ke3 Qe5+ 44.Kd2 Qa5+ 45.Kc1 Qa3+ 
46.Kd1 Qa4+ 47.Ke1 Qh4+ 48.Kf1 Qf4+ 49.Kg2 Qg5+ 50.Kf2 Qf4+ 51.Qf3 Qxh2+ 
52.Ke3 Qe5+ 53.Qe4 Qc3+ 54.Kf4 h4 55.Qe3 g5+ 56.Ke4 Qc8 57.Kd4 h3 58.Qe5 
Qg4+ 59.Kd5 Qg2+ 60.Ke6 h2 61.Qg7+ Kh5 62.Nf6+ Kh4 63.Qh6+ Kg3 64.Qxg5+ 
Kf3 65.Qh5+ Kg3 66.Qg4+ Kf2 67.Ne4+ Kg1 68.Qd1+ Qf1 69.Qd4+ Kg2 70.Qg7+ 
1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.08.01"]
[Round "14"]
[White "Planinc, Albin"]
[Black "Lombardy, William James"]
[WhiteElo "2545"]
[BlackElo "2520"]
[Result "0-1"]
[ECO "A00"]
[EventDate "1974.07.16"]
[PlyCount "70"]

1.g3 d5 2.Bg2 Nf6 3.d3 e6 4.Nf3 b6 5.Nbd2 Bb7 6.O-O Nbd7 7.Re1 Bc5 8.c3 a5
9.a4 O-O 10.Qc2 Re8 11.Rb1 e5 12.b4 Bf8 13.e4 dxe4 14.dxe4 Bc6 15.b5 Bb7 
16.Bf1 c6 17.Qa2 Bc5 18.Bh3 cxb5 19.axb5 Qe7 20.Nh4 g6 21.Re2 Nf8 22.Bb2 
Rad8 23.Nhf3 Rd3 24.Rbe1 h5 25.c4 Qd6 26.Qb1 Ng4 27.Rd1 Nxf2 28.Rxf2 Rd8 
29.Kg2 Bxf2 30.Kxf2 Qc5+ 31.Kf1 Bxe4 32.Ng5 Rxd2 33.Rxd2 Qxc4+ 34.Kg1 Bxb1
35.Rxd8 Qe2 0-1

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.08.01"]
[Round "14"]
[White "Sosonko, Gennadi"]
[Black "Geller, Efim"]
[WhiteElo "2450"]
[BlackElo "2610"]
[Result "1/2-1/2"]
[ECO "A49"]
[EventDate "1974.07.16"]
[PlyCount "31"]

1.d4 Nf6 2.Nf3 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O d6 6.Nc3 Nbd7 7.a4 a5 8.b3 c6 
9.e4 e5 10.Ba3 exd4 11.Nxd4 Qb6 12.Bxd6 Ne8 13.Nde2 Nxd6 14.Qxd6 Qb4 15.
Qd2 Ne5 16.Rad1 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.08.01"]
[Round "14"]
[White "Timman, Jan"]
[Black "Donner, Jan"]
[WhiteElo "2540"]
[BlackElo "2495"]
[Result "1/2-1/2"]
[ECO "C54"]
[EventDate "1974.07.16"]
[PlyCount "40"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d4 exd4 6.cxd4 Bb4+ 7.Bd2 Bxd2+ 8.
Nbxd2 d5 9.exd5 Nxd5 10.Qb3 Nce7 11.O-O O-O 12.Rfe1 c6 13.a4 a5 14.Ne5 Nf5
15.Ndf3 Nd6 16.Bxd5 cxd5 17.Qxd5 Be6 18.Qc5 Rc8 19.Qa3 Nc4 20.Nxc4 Rxc4 
1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.08.01"]
[Round "14"]
[White "Tukmakov, Vladimir"]
[Black "Knaak, Rainer"]
[WhiteElo "2570"]
[BlackElo "2515"]
[Result "1-0"]
[ECO "C72"]
[EventDate "1974.07.16"]
[PlyCount "66"]

1.e4 Nc6 2.Nf3 e5 3.Bb5 a6 4.Ba4 d6 5.O-O Bd7 6.d4 Nf6 7.c3 Qe7 8.Re1 g6 
9.d5 Nd8 10.c4 Bg7 11.Nc3 O-O 12.b4 c6 13.Bb2 cxd5 14.exd5 Rc8 15.c5 Bg4 
16.Ba3 b5 17.Bb3 dxc5 18.bxc5 Nb7 19.d6 Qd8 20.Nd5 Nxd5 21.Qxd5 Nxc5 22.
Bxc5 Be6 23.Qb7 Rxc5 24.Bxe6 fxe6 25.Rad1 a5 26.d7 b4 27.Rd6 Rc7 28.Qb5 
Qe7 29.Rd2 Rd8 30.Qxa5 e4 31.Qxc7 exf3 32.Rxe6 Qxe6 33.Qxd8+ Kf7 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.08.01"]
[Round "14"]
[White "Velimirovic, Dragoljub"]
[Black "Ree, Hans"]
[WhiteElo "2530"]
[BlackElo "2425"]
[Result "1-0"]
[ECO "B87"]
[EventDate "1974.07.16"]
[PlyCount "149"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Bc4 a6 7.Bb3 b5 8.Qe2 Be7
9.Be3 O-O 10.O-O-O b4 11.Na4 Bd7 12.e5 dxe5 13.Nf3 Bb5 14.Rxd8 Bxe2 15.
Rxf8+ Bxf8 16.Nxe5 Nbd7 17.Nxd7 Nxd7 18.f4 Rc8 19.Re1 Bb5 20.g3 Bxa4 21.
Bxa4 Nc5 22.Bxc5 Bxc5 23.Re4 Rd8 24.c3 bxc3 25.bxc3 Kf8 26.Kc2 g6 27.Bb3 
Ke7 28.g4 Kd6 29.Ra4 Ra8 30.f5 gxf5 31.gxf5 exf5 32.Rh4 Ke5 33.Bxf7 Rc8 
34.Rxh7 Bd4 35.c4 Rb8 36.Rh6 Rb2+ 37.Kd3 Bg1 38.h4 Rxa2 39.c5 Ra3+ 40.Kc4 
Ra1 41.Re6+ Kf4 42.c6 Bb6 43.h5 Rh1 44.h6 Kg3 45.Rf6 f4 46.Bd5 Rh4 47.Be4 
Kf2 48.h7 Ke3 49.Rf8 Kxe4 50.h8=Q Rxh8 51.Rxh8 Ke5 52.Rf8 Kd6 53.Rf6+ Ke5 
54.Rh6 f3 55.Rh8 f2 56.Rf8 Kd6 57.Rf6+ Ke5 58.Rxf2 Kd6 59.Rf6+ Kc7 60.Kd5 
Bg1 61.Rh6 Bf2 62.Rg6 Be3 63.Rg4 Bd2 64.Re4 a5 65.Re7+ Kc8 66.Rf7 a4 67.
Rf2 Ba5 68.Rf3 Kc7 69.Rg3 Bd2 70.Rg7+ Kc8 71.Rg4 Ba5 72.Rxa4 Be1 73.Rg4 
Kc7 74.Rg7+ Kc8 75.c7 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.08.03"]
[Round "15"]
[White "Csom, Istvan"]
[Black "Timman, Jan"]
[WhiteElo "2540"]
[BlackElo "2540"]
[Result "1/2-1/2"]
[ECO "E62"]
[EventDate "1974.07.16"]
[PlyCount "124"]

1.c4 g6 2.Nc3 Bg7 3.g3 Nf6 4.Bg2 O-O 5.d4 d6 6.Nf3 c6 7.O-O Qa5 8.h3 e5 9.
e4 Be6 10.d5 cxd5 11.cxd5 Bd7 12.a3 b5 13.b4 Qc7 14.Bb2 a5 15.Nd2 Na6 16.
Qb3 Bh6 17.Ncb1 Nh5 18.Kh2 f5 19.Bxe5 a4 20.Qa2 Qb6 21.Bc3 f4 22.g4 f3 23.
Nxf3 Nf4 24.Bd4 Qd8 25.Nbd2 Ne2 26.Be3 Bg7 27.Rae1 Nf4 28.Bxf4 Rxf4 29.e5 
Rc8 30.e6 Be8 31.Rc1 Bc3 32.Qc2 Rc7 33.Qd3 Bb2 34.Rxc7 Qxc7 35.Qe3 Rf8 36.
Rb1 Qc2 37.Re1 Nc7 38.e7 Rf7 39.Ng5 Be5+ 40.Kh1 Bf4 41.Qe4 Qxd2 42.Nxf7 
Kxf7 43.Re2 Qc1+ 44.Re1 Qd2 45.Re2 Qc1+ 46.Re1 Qc4 47.Qf3 g5 48.Kg1 Kg8 
49.Rd1 Bg6 50.Bf1 Qb3 51.Rd3 Qb1 52.Rc3 Ne8 53.Qe2 Qa1 54.Rc8 Kf7 55.Qxb5 
Kxe7 56.Qxa4 Qd4 57.Qb5 Be5 58.Qc4 Qa7 59.Qc1 Bf4 60.Qc3 Be5 61.Qc1 Bf4 
62.Qc3 Be5 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.08.03"]
[Round "15"]
[White "Donner, Jan"]
[Black "Jansa, Vlastimil"]
[WhiteElo "2495"]
[BlackElo "2535"]
[Result "0-1"]
[ECO "E62"]
[EventDate "1974.07.16"]
[PlyCount "46"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 c6 7.O-O Qa5 8.Nd2 Qh5 
9.e4 Qxd1 10.Rxd1 Nfd7 11.Nf3 a6 12.Bg5 Re8 13.Rac1 b5 14.b3 Nb6 15.a4 b4 
16.Ne2 a5 17.Be3 N6d7 18.Ne1 e5 19.dxe5 dxe5 20.Bh3 Nf8 21.Bxc8 Rxc8 22.
Rc2 Ne6 23.Bb6 c5 0-1

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.08.03"]
[Round "15"]
[White "Geller, Efim"]
[Black "Tukmakov, Vladimir"]
[WhiteElo "2610"]
[BlackElo "2570"]
[Result "1-0"]
[ECO "D27"]
[EventDate "1974.07.16"]
[PlyCount "79"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.a4 Nc6 8.Qe2 cxd4
9.Rd1 Be7 10.exd4 O-O 11.Nc3 Nd5 12.Bd2 b6 13.Ne5 Ncb4 14.Nxd5 exd5 15.
Bxb4 Bxb4 16.Nc6 Qd6 17.Bxd5 Bb7 18.Nxb4 Bxd5 19.Nxd5 Qxd5 20.Rac1 Rfe8 
21.Qc4 Qxc4 22.Rxc4 Rad8 23.Kf1 Kf8 24.Re1 Re6 25.Rxe6 fxe6 26.Ke2 Ke7 27.
Rc7+ Kf6 28.Ke3 Rd6 29.Ke4 h6 30.b4 g5 31.Ra7 b5 32.axb5 axb5 33.Rh7 Kg6 
34.Rb7 Rd5 35.g4 Kf6 36.Rh7 Kg6 37.Rb7 Kf6 38.h3 Kg6 39.Rc7 Rd8 40.Rc5 1-0

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.08.03"]
[Round "15"]
[White "Kaplan, Julio"]
[Black "Ivkov, Borislav"]
[WhiteElo "2460"]
[BlackElo "2530"]
[Result "1/2-1/2"]
[ECO "B52"]
[EventDate "1974.07.16"]
[PlyCount "22"]

1.e4 c5 2.Nf3 d6 3.Bb5+ Bd7 4.Bxd7+ Qxd7 5.c4 Nc6 6.Nc3 e5 7.d3 Nge7 8.Qa4
Rc8 9.a3 g6 10.b4 Nd4 11.Qxd7+ Kxd7 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.08.03"]
[Round "15"]
[White "Knaak, Rainer"]
[Black "Langeweg, Christian"]
[WhiteElo "2515"]
[BlackElo "2390"]
[Result "0-1"]
[ECO "E56"]
[EventDate "1974.07.16"]
[PlyCount "70"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 O-O 6.Nf3 d5 7.O-O Nc6 8.a3 cxd4 
9.axb4 dxc3 10.bxc3 dxc4 11.Bxc4 Qc7 12.Qb3 b6 13.Rd1 Bb7 14.Bb2 a5 15.Be2
Rfc8 16.b5 Nb8 17.c4 Nbd7 18.Qc2 Ne4 19.Nd4 Ndc5 20.f3 Nf6 21.Nb3 Nfd7 22.
Nxc5 Nxc5 23.Rd4 e5 24.Rh4 h6 25.Qf5 Re8 26.f4 Qd8 27.Qg4 Qd2 28.Bxe5 
Qxe3+ 29.Kh1 Rxe5 30.fxe5 Ne4 31.Rf1 Nf2+ 32.Rxf2 Qxf2 33.h3 Rd8 34.Rh5 
Rd4 35.Rf5 Bxg2+ 0-1

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.08.03"]
[Round "15"]
[White "Lombardy, William James"]
[Black "Velimirovic, Dragoljub"]
[WhiteElo "2520"]
[BlackElo "2530"]
[Result "0-1"]
[ECO "A77"]
[EventDate "1974.07.16"]
[PlyCount "102"]

1.d4 c5 2.d5 Nf6 3.c4 g6 4.Nc3 Bg7 5.e4 d6 6.Nf3 O-O 7.Be2 e6 8.O-O exd5 
9.cxd5 Re8 10.Nd2 Nbd7 11.Qc2 Ne5 12.b3 a6 13.a4 Nfg4 14.h3 Nh6 15.f4 Neg4
16.Nf3 Qa5 17.Bd2 Ne3 18.Bxe3 Qxc3 19.Qxc3 Bxc3 20.Rac1 Bb2 21.Rc2 Rxe4 
22.Bxc5 dxc5 23.Rxb2 Nf5 24.Rc1 Rxf4 25.Rxc5 Nd6 26.Ne5 Bf5 27.Nc4 Ne4 28.
Rc7 Re8 29.d6 b5 30.axb5 axb5 31.d7 Bxd7 32.Rxd7 Ng3 33.Rdd2 h5 34.Bf3 
bxc4 35.bxc4 Rxc4 36.Rd1 Re7 37.Kf2 h4 38.Rbd2 Kg7 39.Kg1 f5 40.Kf2 Kf6 
41.Rd5 Rc2+ 42.R1d2 Rxd2+ 43.Rxd2 Ke5 44.Rd5+ Kf4 45.Rd4+ Ne4+ 46.Bxe4 
fxe4 47.Rd6 e3+ 48.Ke2 g5 49.Rd5 Re4 50.Ra5 Rd4 51.Ra2 Rd2+ 0-1

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.08.03"]
[Round "15"]
[White "Ree, Hans"]
[Black "Sosonko, Gennadi"]
[WhiteElo "2425"]
[BlackElo "2450"]
[Result "1/2-1/2"]
[ECO "E39"]
[EventDate "1974.07.16"]
[PlyCount "37"]

1.c4 Nf6 2.Nc3 e6 3.d4 Bb4 4.Qc2 c5 5.dxc5 O-O 6.Bf4 Na6 7.Bd6 Re8 8.e4 
Qa5 9.f3 Bxc5 10.Qd2 Qb6 11.Bxc5 Qxc5 12.O-O-O d5 13.e5 Nd7 14.f4 Nb6 15.
cxd5 Nxd5 16.Kb1 Nxc3+ 17.Qxc3 Qxc3 18.bxc3 Nc5 19.Bb5 1/2-1/2

[Event "14th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1974.08.03"]
[Round "15"]
[White "Ribli, Zoltan"]
[Black "Planinc, Albin"]
[WhiteElo "2525"]
[BlackElo "2545"]
[Result "1/2-1/2"]
[ECO "A10"]
[EventDate "1974.07.16"]
[PlyCount "66"]

1.c4 b6 2.b3 Bb7 3.Bb2 e6 4.Nf3 Nf6 5.g3 Bxf3 6.exf3 c5 7.d4 cxd4 8.Qxd4 
Nc6 9.Qd2 d5 10.cxd5 Bb4 11.Nc3 Nxd5 12.Bb5 Rc8 13.a3 Bxc3 14.Bxc3 O-O 15.
Bb2 Na5 16.Qd3 Nc3 17.Rc1 Nxb5 18.Qxb5 Qd5 19.Qxd5 exd5 20.Rxc8 Rxc8 21.b4
Nc4 22.Bc1 Ne5 23.Ke2 d4 24.f4 d3+ 25.Kd2 Ng4 26.f3 Nxh2 27.Kxd3 Nxf3 28.
Be3 Rd8+ 29.Kc3 Re8 30.Kd3 f5 31.a4 Re4 32.Rb1 Nh2 33.a5 Re6 1/2-1/2

