[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.22"]
[Round "1"]
[White "Botvinnik, Mikhail"]
[Black "Szilagyi, Gyorgy"]
[Result "1-0"]
[ECO "A07"]
[EventDate "1966.07.22"]
[PlyCount "72"]

1.g3 d5 2.Nf3 c6 3.Bg2 Bg4 4.d3 Nd7 5.h3 Bxf3 6.Bxf3 e5 7.Nd2 Ngf6 8.e4 
dxe4 9.dxe4 Bc5 10.O-O Qe7 11.c3 O-O 12.b4 Bb6 13.a4 Rfd8 14.Qc2 Rac8 15.
Be2 c5 16.b5 Ne8 17.Nc4 Nd6 18.Bg5 f6 19.Be3 Nxc4 20.Bxc4+ Kh8 21.a5 Bc7 
22.Rfd1 Nf8 23.Qa2 Rxd1+ 24.Rxd1 Rd8 25.Rxd8 Bxd8 26.a6 b6 27.Kg2 Qd7 28.
Qe2 Ng6 29.Bb3 Ne7 30.Qc4 h6 31.Qf7 Kh7 32.Bc4 Qd6 33.h4 Qd1 34.Qe8 f5 35.
exf5 Nxf5 36.Bg8+ Kh8 1-0

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.22"]
[Round "1"]
[White "Kuijpers, Franciscus"]
[Black "Robatsch, Karl"]
[Result "1/2-1/2"]
[ECO "C93"]
[EventDate "1966.07.22"]
[PlyCount "69"]

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 h6 10.d4 Re8 11.Nbd2 Bf8 12.Bc2 Bd7 13.Nb3 a5 14.dxe5 Nxe5 15.Nxe5 
dxe5 16.Be3 Bc6 17.Qf3 Nd7 18.Rad1 Qf6 19.Qxf6 Nxf6 20.Nc5 Rad8 21.f3 Nd7 
22.Nxd7 Rxd7 23.Rxd7 Bxd7 24.Rd1 Bd6 25.Bb6 Be6 26.Bb3 Bxb3 27.axb3 a4 28.
bxa4 bxa4 29.Be3 Rb8 30.Rd2 Rb3 31.Rc2 c5 32.Rd2 Be7 33.Rd7 Bh4 34.Ra7 
Rxb2 35.Rxa4 1/2-1/2

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.22"]
[Round "1"]
[White "Pomar Salamanca, Arturo"]
[Black "Flohr, Salomon"]
[Result "1/2-1/2"]
[ECO "D25"]
[EventDate "1966.07.22"]
[PlyCount "40"]

1.d4 d5 2.c4 dxc4 3.Nf3 a6 4.e3 Bg4 5.Bxc4 e6 6.h3 Bh5 7.Nc3 Nf6 8.g4 Bg6 
9.Ne5 Nbd7 10.Nxg6 hxg6 11.g5 Nd5 12.Nxd5 exd5 13.Bxd5 c6 14.Bb3 Qxg5 15.
Qf3 Qf5 16.Qxf5 gxf5 17.Bd2 Nf6 18.Ke2 Ne4 19.Rag1 Nxd2 20.Kxd2 Rh4 
1/2-1/2

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.22"]
[Round "1"]
[White "Szabo, Laszlo"]
[Black "Van Scheltinga, Theodore"]
[Result "1-0"]
[ECO "D26"]
[EventDate "1966.07.22"]
[PlyCount "97"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O Nc6 7.Qe2 cxd4 8.Rd1 
Be7 9.exd4 O-O 10.Nc3 Na5 11.Bd3 b6 12.Ne5 Bb7 13.Ba6 Bxa6 14.Qxa6 Nd5 15.
Bd2 Nb4 16.Qe2 Nc2 17.Rac1 Nxd4 18.Qe4 f6 19.Bf4 fxe5 20.Bxe5 Nac6 21.Bxd4
Nxd4 22.Rxd4 Qc8 23.Rc2 Rf6 24.Nd5 exd5 25.Rxc8+ Rxc8 26.Qxd5+ Kh8 27.g3 
Rcf8 28.Re4 Bc5 29.b4 Bxf2+ 30.Kg2 h6 31.Re7 a5 32.Qd7 Rg6 33.Rf7 Rxf7 34.
Qxf7 Rf6 35.Qxf6 gxf6 36.Kxf2 axb4 37.Ke3 Kg7 38.Kd4 h5 39.Kc4 h4 40.Kxb4 
hxg3 41.hxg3 Kg6 42.Kb5 Kg5 43.Kxb6 Kg4 44.a4 Kxg3 45.a5 f5 46.a6 f4 47.a7
f3 48.a8=Q Kf2 49.Qe4 1-0

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.22"]
[Round "1"]
[White "Zuidema, Coenraad"]
[Black "Barendregt, Johan"]
[Result "1-0"]
[ECO "C42"]
[EventDate "1966.07.22"]
[PlyCount "73"]

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 Be7 6.Bd3 d5 7.O-O Nc6 8.c4 
Nb4 9.cxd5 Nxd3 10.Qxd3 Qxd5 11.Re1 Bf5 12.Ne5 Bh4 13.g3 Nxg3 14.Qf3 Ne4 
15.Nc3 Nxc3 16.bxc3 Qxf3 17.Nxf3+ Be7 18.Ba3 Be6 19.Bxe7 Kxe7 20.d5 Kf6 
21.dxe6 fxe6 22.Rab1 b6 23.Nd4 e5 24.Nc6 Rhe8 25.Rb5 e4 26.Rd5 Re6 27.Nd4 
Re7 28.Rf5+ Kg6 29.Re3 h6 30.Rf4 Rae8 31.Kg2 Re5 32.Rg3+ Rg5 33.Kf1 Re5 
34.Re3 Rh5 35.h4 Ra5 36.Rg3+ Kh7 37.Rf7 1-0

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.23"]
[Round "2"]
[White "Flohr, Salomon"]
[Black "Kuijpers, Franciscus"]
[Result "1/2-1/2"]
[ECO "D59"]
[EventDate "1966.07.22"]
[PlyCount "48"]

1.Nf3 Nf6 2.c4 e6 3.d4 d5 4.Nc3 Be7 5.Bg5 O-O 6.e3 h6 7.Bh4 b6 8.cxd5 Nxd5
9.Bxe7 Qxe7 10.Nxd5 exd5 11.Rc1 Be6 12.Qa4 Rc8 13.Be2 c5 14.Qa3 a5 15.O-O 
Kf8 16.dxc5 bxc5 17.Ne5 Nc6 18.Nxc6 Rxc6 19.Bf3 c4 20.Qc3 Qc5 21.Rfd1 Rd6 
22.b3 Rad8 23.Rd4 Qa3 24.Qd2 Qb4 1/2-1/2

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.23"]
[Round "2"]
[White "Robatsch, Karl"]
[Black "Zuidema, Coenraad"]
[Result "1-0"]
[ECO "C65"]
[EventDate "1966.07.22"]
[PlyCount "67"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3 Nf6 5.d4 Bb6 6.O-O O-O 7.Re1 exd4 8.e5 
Ne8 9.cxd4 d5 10.h3 Ne7 11.b3 c6 12.Bd3 f5 13.Nc3 Nc7 14.Na4 Ne6 15.Nxb6 
axb6 16.a4 Bd7 17.Ba3 c5 18.Rc1 cxd4 19.Bc2 b5 20.Nxd4 Nxd4 21.Qxd4 Be6 
22.Qc5 Rf7 23.Qd6 b4 24.Bb2 Qe8 25.Qxe6 Ra6 26.Qd6 Rxd6 27.exd6 Qd7 28.
dxe7 Rxe7 29.Bd4 f4 30.f3 Rxe1+ 31.Rxe1 Kf7 32.Bd3 Qc7 33.Kh2 g6 34.Re5 
1-0

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.23"]
[Round "2"]
[White "Szabo, Laszlo"]
[Black "Botvinnik, Mikhail"]
[Result "0-1"]
[ECO "A34"]
[EventDate "1966.07.22"]
[PlyCount "46"]

1.c4 c5 2.Nc3 g6 3.Nf3 Bg7 4.d4 cxd4 5.Nxd4 Nc6 6.Nc2 d6 7.e4 Nh6 8.h4 f5 
9.h5 fxe4 10.hxg6 hxg6 11.Nxe4 Bf5 12.Nc3 Qa5 13.Bd2 Qe5+ 14.Ne3 O-O-O 15.
Qa4 Ng4 16.Rxh8 Rxh8 17.Qb5 Qf4 18.Ncd1 Nd4 19.Qa5 Rh1 20.Rc1 Ne5 21.Qc7+ 
Kxc7 22.Nd5+ Kd7 23.Nxf4 g5 0-1

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.23"]
[Round "2"]
[White "Szilagyi, Gyorgy"]
[Black "Pomar Salamanca, Arturo"]
[Result "0-1"]
[ECO "D44"]
[EventDate "1966.07.22"]
[PlyCount "84"]

1.c4 c6 2.Nf3 d5 3.d4 Nf6 4.Nc3 e6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5 9.
exf6 gxh4 10.Ne5 Qxf6 11.g3 Nd7 12.f4 Bb7 13.Bg2 Bb4 14.Bxc6 Bxc6 15.Nxc6 
Bxc3+ 16.bxc3 Qf5 17.Qf3 Nf6 18.a4 bxa4 19.O-O hxg3 20.hxg3 Rg8 21.Ne5 Qe4
22.Rxa4 Qxf3 23.Rxf3 Ne4 24.Kg2 Ke7 25.Rxc4 Rgc8 26.Rb4 Rc7 27.c4 f6 28.
Ng4 a5 29.Ra4 Rb7 30.Ra2 Rb4 31.Re3 f5 32.Nf2 Nxf2 33.Kxf2 Rxc4 34.d5 Re4 
35.Rxe4 fxe4 36.dxe6 Kxe6 37.Ke3 Kf5 38.Rh2 a4 39.Rxh6 a3 40.Rh5+ Kg4 41.
Rh1 a2 42.Ra1 Ra4 0-1

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.23"]
[Round "2"]
[White "Van Scheltinga, Theodore"]
[Black "Barendregt, Johan"]
[Result "1/2-1/2"]
[ECO "A41"]
[EventDate "1966.07.22"]
[PlyCount "58"]

1.d4 d6 2.Nf3 Bg4 3.g3 Bxf3 4.exf3 d5 5.f4 e6 6.Nd2 Nf6 7.Bg2 Be7 8.O-O 
O-O 9.Qe2 a6 10.Nb3 Nbd7 11.Be3 Rc8 12.c4 c5 13.Rac1 dxc4 14.Nxc5 b5 15.b4
a5 16.a3 axb4 17.axb4 Nd5 18.f5 Nxc5 19.bxc5 exf5 20.Qf3 Nxe3 21.fxe3 Bg5 
22.h4 Bh6 23.Rb1 Rb8 24.Rfe1 Re8 25.Kh2 b4 26.Qxf5 Bxe3 27.Bd5 Qc7 28.Bxc4
Bxd4 29.Rxb4 Bxc5 1/2-1/2

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.24"]
[Round "3"]
[White "Barendregt, Johan"]
[Black "Robatsch, Karl"]
[Result "1/2-1/2"]
[ECO "C69"]
[EventDate "1966.07.22"]
[PlyCount "53"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O f6 6.d4 exd4 7.Nxd4 c5 8.Nb3 
Qxd1 9.Rxd1 Bd7 10.Bf4 O-O-O 11.Nc3 Be6 12.Rxd8+ Kxd8 13.Rd1+ Kc8 14.Nd5 
Bxd5 15.Rxd5 b6 16.Rd1 Ne7 17.g4 Ng6 18.Bg3 Bd6 19.Bxd6 Rd8 20.Kg2 cxd6 
21.Kg3 Kc7 22.Nc1 Ne7 23.Ne2 g5 24.Nc3 Kc6 25.Nd5 Nxd5 26.exd5+ Kb5 27.Re1
1/2-1/2

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.24"]
[Round "3"]
[White "Botvinnik, Mikhail"]
[Black "Van Scheltinga, Theodore"]
[Result "1-0"]
[ECO "A14"]
[EventDate "1966.07.22"]
[PlyCount "79"]

1.c4 e6 2.g3 Nf6 3.Bg2 d5 4.Nf3 Be7 5.O-O O-O 6.b3 c5 7.Bb2 Nc6 8.e3 b6 9.
Nc3 Ba6 10.Qe2 Rc8 11.Rfd1 d4 12.exd4 cxd4 13.Nb5 d3 14.Qf1 Bc5 15.Ne1 
Bxb5 16.cxb5 Nb4 17.Bf3 Bd4 18.Bc3 Bxc3 19.dxc3 Rxc3 20.a3 Nbd5 21.Rxd3 
Qc7 22.a4 g6 23.Rad1 Rc8 24.Bxd5 Nxd5 25.Nf3 Rxd3 26.Qxd3 Qc3 27.Nd4 Qxd3 
28.Rxd3 Nb4 29.Re3 Rd8 30.Re4 a5 31.bxa6 Nxa6 32.Nc6 Rd1+ 33.Kg2 Rc1 34.
Ne5 Rb1 35.Rd4 Rxb3 36.Rd8+ Kg7 37.Rd7 Nc5 38.Rxf7+ Kg8 39.Rc7 Nxa4 40.Ng4
1-0

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.24"]
[Round "3"]
[White "Kuijpers, Franciscus"]
[Black "Szilagyi, Gyorgy"]
[Result "0-1"]
[ECO "B75"]
[EventDate "1966.07.22"]
[PlyCount "144"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Be3 Nf6 7.Bc4 d6 8.f3 
Bd7 9.Bb3 Qa5 10.Qd2 Rc8 11.h4 Ne5 12.g4 h5 13.g5 Nh7 14.O-O-O Nf8 15.f4 
Nc4 16.Qd3 Nxe3 17.Qxe3 Ne6 18.e5 Nxd4 19.Qxd4 O-O 20.Nd5 Rce8 21.Rhe1 Bg4
22.Rd2 e6 23.Nf6+ Bxf6 24.gxf6 d5 25.Qe3 Kh7 26.Rg1 Qb6 27.Rd4 Rh8 28.c3 
Rc8 29.Rg2 Qc5 30.Bc2 Qf8 31.a3 a5 32.Bd3 Rc5 33.a4 Qh6 34.Rc2 Rhc8 35.Kb1
b6 36.Ka2 Rg8 37.Rg2 Rcc8 38.c4 dxc4 39.Bxc4 Qf8 40.Rgd2 Qc5 41.Qb3 Rgf8 
42.Qb5 Qc7 43.b3 Qb7 44.Rd7 Qe4 45.Qxb6 Qxf4 46.Qd4 Qg3 47.Re7 Qe1 48.Qd7 
Rc7 49.Qd6 Rc5 50.Rb2 Qxe5 51.Rxe6 Qxd6 52.Rxd6 g5 53.hxg5 Kg6 54.Rbd2 
Kxg5 55.R2d5+ Rxd5 56.Rxd5+ Kxf6 57.Rxa5 h4 58.Rd5 h3 59.Rd2 Ke5 60.a5 f5 
61.a6 f4 62.Bf1 f3 63.Rh2 Kf4 64.Rxh3 Bxh3 65.Bxh3 Ke5 66.Ka3 Kd6 67.Ka4 
Kc7 68.Ka5 f2 69.Bf1 Rf5+ 70.Kb4 Kb6 71.Kc3 Re5 72.Kd2 Re1 0-1

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.24"]
[Round "3"]
[White "Pomar Salamanca, Arturo"]
[Black "Szabo, Laszlo"]
[Result "1-0"]
[ECO "D83"]
[EventDate "1966.07.22"]
[PlyCount "69"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.Qb3 e6 7.Nf3 b6 8.Rc1 c6 9.
Bd3 Qe7 10.O-O Nbd7 11.e4 dxc4 12.Bxc4 Bb7 13.Rfe1 h6 14.Bg3 Nh5 15.d5 
Nxg3 16.hxg3 Nc5 17.Qa3 exd5 18.exd5 Qd8 19.Rcd1 cxd5 20.Nxd5 Kh7 21.b4 
Nd7 22.Qb3 Rb8 23.Nf4 Bxf3 24.gxf3 Qc8 25.Bxf7 Ne5 26.Rxe5 Bxe5 27.Nxg6 
Qc3 28.Nxf8+ Rxf8 29.Qe6 Bg7 30.Bg6+ Kh8 31.Bd3 Qxb4 32.Qg6 Kg8 33.Qh7+ 
Kf7 34.Bg6+ Kf6 35.Be4 1-0

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.24"]
[Round "3"]
[White "Zuidema, Coenraad"]
[Black "Flohr, Salomon"]
[Result "1/2-1/2"]
[ECO "B17"]
[EventDate "1966.07.22"]
[PlyCount "45"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Bc4 Ngf6 6.Ng5 e6 7.Qe2 Nb6 8.Bd3 
h6 9.N5f3 c5 10.dxc5 Bxc5 11.Ne5 Nbd7 12.Ngf3 Nxe5 13.Nxe5 O-O 14.O-O b6 
15.Rd1 Qe7 16.Bf4 Bb7 17.a3 Rad8 18.Rac1 Ba8 19.Kh1 Qb7 20.f3 Qe7 21.Qe1 
Nh5 22.Bd2 a5 23.Be4 1/2-1/2

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.26"]
[Round "4"]
[White "Botvinnik, Mikhail"]
[Black "Pomar Salamanca, Arturo"]
[Result "1-0"]
[ECO "D14"]
[EventDate "1966.07.22"]
[PlyCount "81"]

1.c4 c6 2.Nc3 d5 3.cxd5 cxd5 4.d4 Nf6 5.Nf3 Nc6 6.Bf4 Bf5 7.e3 e6 8.Bb5 
Bb4 9.Ne5 Qa5 10.Bxc6+ bxc6 11.O-O Bxc3 12.bxc3 Rc8 13.c4 O-O 14.g4 Bg6 
15.c5 Ne4 16.f3 Nd2 17.Rf2 Nc4 18.Nxc4 dxc4 19.Bd6 Rfe8 20.e4 f5 21.Qc2 
fxe4 22.fxe4 Qa3 23.Re1 Qh3 24.Rg2 Rcd8 25.Rg3 Qh6 26.Qxc4 Qd2 27.Qc3 Qxa2
28.Rg2 Qa6 29.h4 Rd7 30.h5 Bf7 31.Ra1 Qc8 32.Qf3 Qd8 33.g5 g6 34.h6 e5 35.
Bxe5 Rb7 36.Qf4 a5 37.Rf2 Bb3 38.d5 cxd5 39.c6 Ra7 40.c7 Qe7 41.Bd6 1-0

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.26"]
[Round "4"]
[White "Flohr, Salomon"]
[Black "Barendregt, Johan"]
[Result "1/2-1/2"]
[ECO "A40"]
[EventDate "1966.07.22"]
[PlyCount "25"]

1.Nf3 g6 2.d4 Bg7 3.g3 d5 4.Bg2 c6 5.O-O Nf6 6.Nbd2 O-O 7.c3 Nbd7 8.e4 
dxe4 9.Ng5 e5 10.Ndxe4 Nxe4 11.Nxe4 exd4 12.cxd4 Nb6 13.Be3 1/2-1/2

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.26"]
[Round "4"]
[White "Szabo, Laszlo"]
[Black "Kuijpers, Franciscus"]
[Result "0-1"]
[ECO "D37"]
[EventDate "1966.07.22"]
[PlyCount "42"]

1.d4 d5 2.c4 e6 3.Nc3 Be7 4.Nf3 Nf6 5.Bf4 O-O 6.e3 c5 7.dxc5 Qa5 8.a3 dxc4
9.Bxc4 Qxc5 10.Qe2 a6 11.O-O b5 12.Ba2 Bb7 13.e4 Qh5 14.e5 Nfd7 15.Rfd1 
Rd8 16.Qe3 Bxf3 17.gxf3 Nc6 18.Re1 Nc5 19.Red1 Nd3 20.Bg3 Ncxe5 21.Bb1 Nc4
0-1

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.26"]
[Round "4"]
[White "Szilagyi, Gyorgy"]
[Black "Zuidema, Coenraad"]
[Result "1/2-1/2"]
[ECO "A07"]
[EventDate "1966.07.22"]
[PlyCount "109"]

1.Nf3 Nf6 2.g3 d5 3.Bg2 g6 4.O-O Bg7 5.d3 O-O 6.Nbd2 Nc6 7.c3 e5 8.e4 a5 
9.Re1 h6 10.Qc2 a4 11.exd5 Nxd5 12.Nc4 Re8 13.Nfd2 Be6 14.a3 Qd7 15.Ne4 b6
16.f3 Kh7 17.Nf2 Nde7 18.f4 exf4 19.Bxf4 Bd5 20.Bh3 f5 21.Ne5 Nxe5 22.Bxe5
Bb3 23.Qd2 Bxe5 24.Rxe5 Nc6 25.Rxe8 Rxe8 26.Re1 Ne5 27.Bg2 Bd5 28.Qd1 Bf3 
29.Qc2 Bxg2 30.Kxg2 Qc6+ 31.Kf1 Ng4 32.Rxe8 Nxh2+ 33.Ke1 Qxe8+ 34.Qe2 Nf3+
35.Kd1 Qxe2+ 36.Kxe2 Ne5 37.c4 g5 38.Nd1 f4 39.gxf4 gxf4 40.Nc3 f3+ 41.Ke3
f2 42.Ke2 Nxd3 43.Nxa4 Kg6 44.b4 Kf5 45.Nc3 h5 46.Nd5 Nf4+ 47.Nxf4 Kxf4 
48.Kxf2 Ke5 49.a4 Kd4 50.c5 bxc5 51.a5 cxb4 52.a6 b3 53.a7 b2 54.a8=Q b1=Q
55.Qd8+ 1/2-1/2

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.26"]
[Round "4"]
[White "Van Scheltinga, Theodore"]
[Black "Robatsch, Karl"]
[Result "1-0"]
[ECO "D47"]
[EventDate "1966.07.22"]
[PlyCount "75"]

1.d4 Nf6 2.Nf3 e6 3.c4 d5 4.Nc3 c6 5.e3 Nbd7 6.Bd3 dxc4 7.Bxc4 b5 8.Bd3 b4
9.Ne4 Nxe4 10.Bxe4 Bb7 11.Qa4 Qb6 12.Nd2 Rc8 13.Nc4 Qa6 14.Qxa6 Bxa6 15.
Bd3 Bb7 16.Na5 Ba8 17.Bd2 Be7 18.Rc1 O-O 19.Ba6 Rce8 20.O-O e5 21.Rfd1 
exd4 22.exd4 Nb8 23.Bf1 Rd8 24.Be3 Rd5 25.Nb3 Rfd8 26.Be2 g5 27.Bf3 Rb5 
28.h3 Bb7 29.d5 cxd5 30.Be2 Ba6 31.Bxb5 Bxb5 32.Bxa7 Nc6 33.Bc5 Bf6 34.Nd4
Bxd4 35.Bxd4 Ra8 36.Bf6 d4 37.Rc5 Be2 38.Rd2 1-0

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.28"]
[Round "5"]
[White "Barendregt, Johan"]
[Black "Szilagyi, Gyorgy"]
[Result "1-0"]
[ECO "B31"]
[EventDate "1966.07.22"]
[PlyCount "43"]

1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.c3 Nf6 6.Re1 O-O 7.d4 cxd4 8.cxd4 
d5 9.e5 Ne4 10.Nc3 Nxc3 11.bxc3 Bd7 12.Bd3 Rc8 13.Ng5 e6 14.Qg4 Ne7 15.
Nxh7 Kxh7 16.Qh4+ Kg8 17.Bg5 Re8 18.Re3 Rxc3 19.Rh3 Rxd3 20.Qh7+ Kf8 21.
Bf6 Nf5 22.Qh8+ 1-0

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.28"]
[Round "5"]
[White "Kuijpers, Franciscus"]
[Black "Botvinnik, Mikhail"]
[Result "0-1"]
[ECO "B09"]
[EventDate "1966.07.22"]
[PlyCount "108"]

1.e4 g6 2.d4 d6 3.Nc3 Nf6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nc6 7.e5 Ne8 8.Be3 Nb4 
9.Bc4 Bf5 10.Rc1 c5 11.d5 Bg4 12.O-O dxe5 13.fxe5 Bxe5 14.Qe1 Bxf3 15.Rxf3
Nd6 16.Bf1 Nf5 17.Bxc5 Bd6 18.Bf2 Rc8 19.a3 Rxc3 20.bxc3 Nxd5 21.Rd1 Nf6 
22.Bd3 Ng7 23.h3 Qc7 24.a4 Nd7 25.Bg3 Ne5 26.Bxe5 Bxe5 27.Be4 b6 28.Rfd3 
Bd6 29.Bf3 Ne6 30.Kh1 Nc5 31.Rd4 Be5 32.Rc4 a5 33.Qd2 Bg7 34.Qd5 Rc8 35.
Bg4 e6 36.Qd6 Be5 37.Qd2 f5 38.Bf3 Bf6 39.Qe2 Kf7 40.Qe3 Bg7 41.Qd2 Be5 
42.h4 Qe7 43.Qh6 Bg7 44.Qe3 Rd8 45.Rxd8 Qxd8 46.h5 e5 47.h6 Bf6 48.g4 e4 
49.Be2 Be5 50.Qf2 Qg5 51.gxf5 gxf5 52.Rxc5 bxc5 53.Bc4+ Kg6 54.Qxc5 Qxh6+ 
0-1

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.28"]
[Round "5"]
[White "Pomar Salamanca, Arturo"]
[Black "Van Scheltinga, Theodore"]
[Result "1-0"]
[ECO "D26"]
[EventDate "1966.07.22"]
[PlyCount "95"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O Nc6 7.Nc3 Be7 8.dxc5 
Qxd1 9.Rxd1 Bxc5 10.h3 a6 11.a4 b6 12.e4 Bb7 13.e5 Nd7 14.Bf4 g5 15.Bxg5 
Ncxe5 16.Nxe5 Nxe5 17.Bf6 Rg8 18.Bxe5 Rxg2+ 19.Kf1 Rxf2+ 20.Ke1 Rxb2 21.
Ne4 Rb4 22.Nxc5 Rxc4 23.Nxb7 Re4+ 24.Kf2 Rxe5 25.Rac1 Ke7 26.Nd6 Rc5 27.
Rxc5 bxc5 28.Ne4 Rc8 29.Rc1 c4 30.Rc3 e5 31.Nd2 Ke6 32.Nxc4 f5 33.Kf3 Rc6 
34.Rc2 Rc7 35.Ne3 Rxc2 36.Nxc2 Kd6 37.Ne3 Kc5 38.Nxf5 Kb4 39.Ke4 Kxa4 40.
Kxe5 Kb4 41.Nd4 Kc5 42.h4 h5 43.Ke4 Kc4 44.Nc6 Kb5 45.Ne5 Kc5 46.Kd3 Kd5 
47.Ng6 Ke6 48.Ke4 1-0

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.28"]
[Round "5"]
[White "Robatsch, Karl"]
[Black "Flohr, Salomon"]
[Result "1/2-1/2"]
[ECO "B15"]
[EventDate "1966.07.22"]
[PlyCount "86"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.Bc4 Bd6 7.Qf3 O-O 8.
Ne2 Nd7 9.O-O Nb6 10.Bd3 Nd5 11.c4 Ne7 12.Bf4 Ng6 13.Bxd6 Qxd6 14.Rfe1 c5 
15.Rad1 cxd4 16.Bxg6 hxg6 17.Nxd4 Qa6 18.Nb5 Qc6 19.Qf4 Be6 20.b3 Rfd8 21.
h3 a6 22.Nd4 Qb6 23.Rd2 g5 24.Qe3 Bd7 25.Nf5 Qxe3 26.Nxe3 Bc6 27.Red1 Rxd2
28.Rxd2 a5 29.a3 Kf8 30.f3 Ke8 31.Kf2 b5 32.c5 b4 33.axb4 axb4 34.Nc2 Ra5 
35.Nxb4 Rxc5 36.Rc2 Rxc2+ 37.Nxc2 Kd7 38.Nd4 Bd5 39.Ke3 g6 40.b4 Bc4 41.g3
Kd6 42.Ke4 f5+ 43.Ke3 Bf1 1/2-1/2

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.28"]
[Round "5"]
[White "Zuidema, Coenraad"]
[Black "Szabo, Laszlo"]
[Result "1-0"]
[ECO "B75"]
[EventDate "1966.07.22"]
[PlyCount "91"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Be3 d6 7.Qd2 Nf6 8.f3 
Bd7 9.O-O-O a6 10.g4 Rc8 11.Nxc6 Bxc6 12.Bd4 O-O 13.h4 Qa5 14.Kb1 Rfd8 15.
Qe3 Nd7 16.Bxg7 Kxg7 17.h5 Qc5 18.Qc1 Rh8 19.Nd5 Bxd5 20.h6+ Kg8 21.Rxd5 
Qf2 22.Qd1 f6 23.g5 Kf7 24.Bh3 Rc7 25.Bxd7 Rxd7 26.gxf6 Kxf6 27.e5+ Ke6 
28.Re1 Qxe1 29.Qxe1 Kxd5 30.e6 Rdd8 31.Qe4+ Kc5 32.Qxb7 Rhe8 33.Qxa6 Rb8 
34.a3 Kd5 35.Qe2 Rf8 36.Qe4+ Kc5 37.b4+ Kb6 38.Qd4+ Kc6 39.Kb2 Rf6 40.Qa7 
Rb7 41.Qa6+ Kc7 42.Qa5+ Kb8 43.Qd8+ Ka7 44.Qg8 Rc7 45.Qxh7 Rxe6 46.Qg7 1-0

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.31"]
[Round "6"]
[White "Botvinnik, Mikhail"]
[Black "Zuidema, Coenraad"]
[Result "1-0"]
[ECO "D75"]
[EventDate "1966.07.22"]
[PlyCount "113"]

1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.O-O O-O 5.c4 d5 6.cxd5 Nxd5 7.d4 c5 8.dxc5 
Na6 9.c6 bxc6 10.Nbd2 Qc7 11.a3 c5 12.Nc4 Bb7 13.Qc2 Rac8 14.Rd1 Rfd8 15.
Bd2 Nb8 16.Bh3 e6 17.e4 Nb6 18.Bf4 Qc6 19.Nd6 Rxd6 20.Rxd6 Qxe4 21.Qxe4 
Bxe4 22.Ng5 Bd5 23.Nxe6 fxe6 24.Rxd5 exd5 25.Bxc8 Nxc8 26.Bxb8 Bxb2 27.Rb1
Bxa3 28.Rb7 c4 29.Be5 Bf8 30.Kf1 Ne7 31.Bd6 Kf7 32.Rxa7 Ke6 33.Ra6 Bg7 34.
f4 Kd7 35.Bxe7 Kxe7 36.Ra7+ Kf8 37.Rc7 c3 38.Ke2 h6 39.Kd3 d4 40.g4 Bf6 
41.h4 Kg8 42.Ke4 Bg7 43.g5 hxg5 44.hxg5 Kf8 45.Kd3 Kg8 46.Rc6 Kf7 47.Ke4 
Bh8 48.Rc7+ Kg8 49.Rc8+ Kh7 50.f5 gxf5+ 51.Kxf5 Bg7 52.Re8 d3 53.g6+ Kh6 
54.Re3 Bd4 55.Rxd3 c2 56.Rh3+ Kg7 57.Rh7+ 1-0

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.31"]
[Round "6"]
[White "Pomar Salamanca, Arturo"]
[Black "Kuijpers, Franciscus"]
[Result "1/2-1/2"]
[ECO "D55"]
[EventDate "1966.07.22"]
[PlyCount "39"]

1.d4 d5 2.c4 e6 3.Nc3 Be7 4.Nf3 Nf6 5.Bg5 O-O 6.e3 b6 7.Bd3 dxc4 8.Bxc4 
Bb7 9.O-O Nbd7 10.Qe2 Ne4 11.Bf4 Bd6 12.Nxe4 Bxe4 13.Bxd6 cxd6 14.Rac1 Rc8
15.Ba6 Rc7 16.Nd2 Ba8 17.Nb3 Nb8 18.Rxc7 Qxc7 19.Rc1 Qd7 20.Bb5 1/2-1/2

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.31"]
[Round "6"]
[White "Szabo, Laszlo"]
[Black "Barendregt, Johan"]
[Result "1-0"]
[ECO "A41"]
[EventDate "1966.07.22"]
[PlyCount "43"]

1.Nf3 g6 2.d4 Bg7 3.c4 d6 4.Nc3 Bg4 5.e3 Nc6 6.h3 Bxf3 7.Qxf3 e5 8.d5 Nce7
9.g4 f5 10.e4 f4 11.g5 h6 12.h4 Nc8 13.Rg1 hxg5 14.hxg5 Qd7 15.Rh1 Rxh1 
16.Qxh1 Kf8 17.Qh7 Nge7 18.Bh3 Qd8 19.Be6 c5 20.Bd2 a6 21.Ne2 b5 22.Nxf4 
1-0

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.31"]
[Round "6"]
[White "Szilagyi, Gyorgy"]
[Black "Robatsch, Karl"]
[Result "1-0"]
[ECO "D61"]
[EventDate "1966.07.22"]
[PlyCount "81"]

1.d4 Nf6 2.Nf3 e6 3.c4 d5 4.Bg5 Nbd7 5.Nc3 Be7 6.e3 O-O 7.Qc2 c6 8.a3 a6 
9.cxd5 exd5 10.Bd3 h6 11.Bf4 Ne8 12.g4 Bd6 13.h4 Bxf4 14.exf4 Qc7 15.Ne2 
c5 16.Rc1 c4 17.Qd2 Nef6 18.g5 Ne4 19.Bxe4 dxe4 20.Ne5 Nxe5 21.fxe5 h5 22.
Qc2 Qa5+ 23.Qc3 Qb6 24.Qb4 Qd8 25.Rxc4 Bg4 26.Rg1 Qd7 27.Rg3 Bf3 28.Ng1 a5
29.Qd2 Bg4 30.Rgc3 Rad8 31.Ne2 Bf3 32.Qe3 Rfe8 33.g6 fxg6 34.Rc7 Qd5 35.
R3c5 Qa2 36.Rxg7+ Kxg7 37.Rc7+ Kg8 38.Qh6 Qf7 39.Rxf7 Kxf7 40.Qh7+ Ke6 41.
Nf4+ 1-0

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.07.31"]
[Round "6"]
[White "Van Scheltinga, Theodore"]
[Black "Flohr, Salomon"]
[Result "0-1"]
[ECO "A09"]
[EventDate "1966.07.22"]
[PlyCount "54"]

1.Nf3 d5 2.c4 d4 3.d3 c5 4.g3 Nc6 5.Bg2 e5 6.O-O Nf6 7.Na3 Bd6 8.Nc2 O-O 
9.a3 Re8 10.e4 dxe3 11.Bxe3 Bf5 12.Ng5 Be7 13.Ne4 Nxe4 14.dxe4 Be6 15.b3 
Na5 16.Rb1 b5 17.cxb5 Nxb3 18.Qxd8 Rexd8 19.Rfe1 Nd4 20.Bxd4 exd4 21.a4 c4
22.a5 c3 23.e5 Rac8 24.b6 axb6 25.a6 d3 26.a7 dxc2 27.Ra1 Ra8 0-1

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.08.01"]
[Round "7"]
[White "Barendregt, Johan"]
[Black "Botvinnik, Mikhail"]
[Result "1-0"]
[ECO "B10"]
[EventDate "1966.07.22"]
[PlyCount "81"]

1.e4 c6 2.Ne2 d5 3.e5 c5 4.d4 Nc6 5.c3 Bg4 6.f3 Bd7 7.e6 Bxe6 8.dxc5 Nf6 
9.b4 g6 10.Bf4 Bg7 11.Nd4 O-O 12.Nxc6 bxc6 13.Be5 Bh6 14.Bd3 Nd7 15.Bd4 f6
16.O-O Bf7 17.a4 e5 18.Bf2 f5 19.Ba6 Qc7 20.Nd2 Rab8 21.Rb1 Rfd8 22.Qc2 
Bf8 23.f4 exf4 24.Bh4 h6 25.Bxd8 Rxd8 26.Nb3 Nf6 27.Qc1 g5 28.Nd4 Ng4 29.
Bd3 Bg7 30.Bxf5 Ne3 31.Bc2 Nxf1 32.Qxf1 Re8 33.Re1 Rxe1 34.Qxe1 a5 35.Nf5 
Bf8 36.Qe2 Kh8 37.Qd2 Kg8 38.Qd4 Qd8 39.Qe5 d4 40.Qxd4 Qe8 41.Qe4 1-0

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.08.01"]
[Round "7"]
[White "Flohr, Salomon"]
[Black "Szilagyi, Gyorgy"]
[Result "1/2-1/2"]
[ECO "A30"]
[EventDate "1966.07.22"]
[PlyCount "75"]

1.Nf3 c5 2.c4 g6 3.d4 cxd4 4.Nxd4 Bg7 5.Nc3 Nc6 6.Nc2 d6 7.e4 Nh6 8.Be2 f5
9.O-O O-O 10.exf5 Nxf5 11.Nd5 Bd7 12.Rb1 a6 13.b3 b5 14.cxb5 axb5 15.Bxb5 
Rxa2 16.Bxc6 Bxc6 17.Ncb4 Qa8 18.Nxc6 Qxc6 19.Bg5 Qb7 20.Qd3 h6 21.Bd2 Nd4
22.Ne3 Kh7 23.Rfd1 d5 24.Be1 e5 25.Rd2 e4 26.Qf1 Rxd2 27.Bxd2 Ne6 28.Nc2 
d4 29.Qc4 Rc8 30.Qxe6 Rxc2 31.Rd1 Qa8 32.h4 h5 33.g4 hxg4 34.h5 gxh5 35.
Rc1 Rxd2 36.Qf5+ Kh6 37.Qe6+ Kh7 38.Qf5+ 1/2-1/2

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.08.01"]
[Round "7"]
[White "Kuijpers, Franciscus"]
[Black "Van Scheltinga, Theodore"]
[Result "0-1"]
[ECO "B93"]
[EventDate "1966.07.22"]
[PlyCount "68"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 Nbd7 7.f4 g6 8.Bf3 
Bg7 9.O-O O-O 10.Kh1 Nb6 11.a4 Bg4 12.Bxg4 Nxg4 13.Qxg4 Bxd4 14.f5 Bxc3 
15.bxc3 Nd7 16.Bh6 Re8 17.Rf4 Ne5 18.Qh3 Rc8 19.Rh4 Qc7 20.Bd2 h5 21.Rf1 
Qc4 22.Rhf4 Kg7 23.Qe3 Ng4 24.Qe1 g5 25.R4f3 f6 26.h4 gxh4 27.Rh3 Rh8 28.
Rf4 Qa2 29.Qd1 Kf7 30.Rxh4 Qxa4 31.Qb1 Qb5 32.Qa2+ Kg7 33.Qa3 Qb1+ 34.Bc1 
Rxc3 0-1

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.08.01"]
[Round "7"]
[White "Robatsch, Karl"]
[Black "Szabo, Laszlo"]
[Result "1/2-1/2"]
[ECO "D13"]
[EventDate "1966.07.22"]
[PlyCount "52"]

1.d4 d5 2.c4 c6 3.cxd5 cxd5 4.Nc3 Nc6 5.Nf3 Nf6 6.Bf4 e6 7.e3 Bd6 8.Bxd6 
Qxd6 9.Be2 O-O 10.O-O Bd7 11.Rc1 Rac8 12.Qb3 Na5 13.Qd1 Nc4 14.Bxc4 Rxc4 
15.Ne5 Rc7 16.Qd2 Rfc8 17.f3 Be8 18.Ne2 Bb5 19.Rxc7 Rxc7 20.Rc1 Bxe2 21.
Rxc7 Qxc7 22.Qxe2 Nd7 23.Qb5 Qc1+ 24.Kf2 Qd2+ 25.Kf1 Qd1+ 26.Kf2 Qd2+ 
1/2-1/2

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.08.01"]
[Round "7"]
[White "Zuidema, Coenraad"]
[Black "Pomar Salamanca, Arturo"]
[Result "1/2-1/2"]
[ECO "B18"]
[EventDate "1966.07.22"]
[PlyCount "30"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.Bc4 Nf6 7.N1e2 e5 8.O-O 
exd4 9.Nxd4 Be7 10.b3 O-O 11.Bb2 Nbd7 12.Ndf5 Re8 13.Qf3 Qa5 14.Nxe7+ Rxe7
15.Qf4 Nd5 1/2-1/2

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.08.02"]
[Round "8"]
[White "Botvinnik, Mikhail"]
[Black "Robatsch, Karl"]
[Result "1-0"]
[ECO "D36"]
[EventDate "1966.07.22"]
[PlyCount "47"]

1.c4 Nf6 2.Nc3 e6 3.d4 d5 4.cxd5 exd5 5.Bg5 c6 6.e3 Be7 7.Qc2 O-O 8.Bd3 
Nbd7 9.Nf3 Re8 10.O-O Nf8 11.Rae1 Ne4 12.Bxe7 Qxe7 13.Bxe4 dxe4 14.Nd2 b6 
15.Qa4 f5 16.f3 exf3 17.Nxf3 Bb7 18.Ne5 Qe6 19.Qc2 Bc8 20.e4 Qd6 21.Rd1 
Ne6 22.Qb3 fxe4 23.Rf7 a5 24.Nxe4 1-0

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.08.02"]
[Round "8"]
[White "Kuijpers, Franciscus"]
[Black "Zuidema, Coenraad"]
[Result "1/2-1/2"]
[ECO "C98"]
[EventDate "1966.07.22"]
[PlyCount "86"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 
9.h3 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 Nc6 13.dxc5 dxc5 14.a4 Be6 15.Qe2 c4 
16.Ng5 Rad8 17.axb5 axb5 18.Nxe6 fxe6 19.b3 Bc5 20.Rf1 b4 21.Qxc4 bxc3 22.
Qxc5 cxd2 23.Bb2 Rf7 24.f3 Nb4 25.Qxc7 Rxc7 26.Bd1 Nd3 27.Ra2 Nh5 28.Kh2 
Rc1 29.g3 Nf6 30.g4 Ne1 31.Ra1 Rxa1 32.Bxa1 Rc8 33.Rf2 Nc2 34.Bxe5 Ne3 35.
Bf4 Nxd1 36.Rxd2 Rc3 37.Rxd1 Rxf3 38.Rd8+ Kf7 39.Bd6 Rxb3 40.e5 Nd5 41.
Rd7+ Kg8 42.Rd8+ Kf7 43.Rd7+ Kg8 1/2-1/2

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.08.02"]
[Round "8"]
[White "Pomar Salamanca, Arturo"]
[Black "Barendregt, Johan"]
[Result "1/2-1/2"]
[ECO "B07"]
[EventDate "1966.07.22"]
[PlyCount "14"]

1.d4 d6 2.e4 Nf6 3.Nc3 e5 4.dxe5 dxe5 5.Qxd8+ Kxd8 6.Bg5 Be6 7.O-O-O+ Nd7 
1/2-1/2

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.08.02"]
[Round "8"]
[White "Szabo, Laszlo"]
[Black "Flohr, Salomon"]
[Result "1/2-1/2"]
[ECO "A00"]
[EventDate "1966.07.22"]
[PlyCount "58"]

1.g3 d5 2.Bg2 Nf6 3.c4 d4 4.Nf3 c5 5.e3 Nc6 6.exd4 Nxd4 7.Nxd4 cxd4 8.O-O 
e6 9.d3 Bd6 10.b4 O-O 11.a3 e5 12.Nd2 Bg4 13.Qc2 Qd7 14.c5 Rac8 15.Nc4 Bb8
16.Re1 Rfe8 17.a4 Nd5 18.Ba3 b6 19.Qb3 Be6 20.Nxe5 Bxe5 21.Rxe5 Nf4 22.
Rxe6 Nxe6 23.Rc1 bxc5 24.bxc5 Nxc5 25.Rxc5 Rxc5 26.Bxc5 Re1+ 27.Bf1 h6 28.
Qb8+ Kh7 29.Qf4 Kg8 1/2-1/2

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.08.02"]
[Round "8"]
[White "Van Scheltinga, Theodore"]
[Black "Szilagyi, Gyorgy"]
[Result "1-0"]
[ECO "E60"]
[EventDate "1966.07.22"]
[PlyCount "130"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 c5 5.Nf3 cxd4 6.Nxd4 Nc6 7.O-O d5 8.cxd5 
Nxd5 9.Nxc6 bxc6 10.e4 Nb6 11.Qxd8+ Kxd8 12.Rd1+ Kc7 13.Bf4+ e5 14.Bg5 f6 
15.Bd2 Bg4 16.f3 Be6 17.Bf1 Rhd8 18.Nc3 Bf8 19.Kg2 Bc4 20.b3 Bxf1+ 21.Kxf1
Ba3 22.Rab1 Rd3 23.Ke2 Rd4 24.Be3 Rxd1 25.Rxd1 Rd8 26.Rxd8 Kxd8 27.Kd3 Kd7
28.Nb1 Be7 29.Bxb6 axb6 30.a4 Bb4 31.Kc4 Be1 32.Na3 h5 33.Nc2 Bf2 34.g4 h4
35.h3 Ke6 36.Nb4 Kd6 37.Nd3 Be3 38.Ne1 Bf2 39.Nc2 Ke6 40.b4 Kd6 41.b5 Bc5 
42.Ne1 Be3 43.Nd3 Bd2 44.bxc6 Kxc6 45.g5 Bxg5 46.Nb4+ Kb7 47.Kd5 Bd2 48.
Nc6 Bg5 49.Nb4 Bd2 50.Nd3 Ka6 51.Nb2 b5 52.axb5+ Kxb5 53.Nc4 Bg5 54.Nd6+ 
Kb4 55.Nf7 Kc3 56.Nxg5 fxg5 57.Kxe5 Kd3 58.Kf6 g4 59.fxg4 Kxe4 60.Kxg6 Kf4
61.Kf6 Kg3 62.g5 Kxh3 63.g6 Kg2 64.g7 h3 65.g8=Q+ Kf2 1-0

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.08.04"]
[Round "9"]
[White "Barendregt, Johan"]
[Black "Kuijpers, Franciscus"]
[Result "0-1"]
[ECO "A00"]
[EventDate "1966.07.22"]
[PlyCount "116"]

1.b4 a5 2.b5 Nf6 3.Bb2 g6 4.f4 Bg7 5.Nf3 d6 6.e3 e5 7.fxe5 Ng4 8.Bc4 O-O 
9.O-O d5 10.Be2 Nd7 11.Nc3 Ndxe5 12.h3 Nxf3+ 13.Bxf3 Nf6 14.Ne2 c5 15.bxc6
bxc6 16.Ba3 Re8 17.c4 Ba6 18.cxd5 cxd5 19.Bb2 Rb8 20.Bd4 Ne4 21.d3 Ng5 22.
Bxg7 Kxg7 23.Qd2 Qe7 24.h4 Nxf3+ 25.Rxf3 Qb4 26.Rd1 Qxd2 27.Rxd2 Rb1+ 28.
Kf2 Reb8 29.Rc2 R8b7 30.Nc1 R7b2 31.Rxb2 Rxb2+ 32.Kg3 a4 33.Rf2 a3 34.Kf3 
Bb5 35.g4 Ba4 36.Rf1 Bc2 37.e4 d4 38.e5 Ba4 39.Ke4 Rb4 40.Kd5 Bd7 41.g5 
Be6+ 42.Kc5 Rb1 43.Kxd4 Bxa2 44.Rf2 Rb2 45.Re2 Be6 46.Kc3 Rb7 47.Rc2 a2 
48.Rxa2 Rc7+ 49.Kd4 Rxc1 50.Ra8 Bf5 51.Rd8 Re1 52.Ra8 h5 53.Ra3 Rh1 54.Kc5
Rh3 55.Kc4 Be6+ 56.Kc5 Bf5 57.Kc4 Rxh4+ 58.d4 Re4 0-1

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.08.04"]
[Round "9"]
[White "Flohr, Salomon"]
[Black "Botvinnik, Mikhail"]
[Result "1/2-1/2"]
[ECO "E11"]
[EventDate "1966.07.22"]
[PlyCount "29"]

1.d4 e6 2.c4 Bb4+ 3.Bd2 Qe7 4.Nf3 Nf6 5.Nc3 O-O 6.e3 b6 7.Be2 Bb7 8.O-O d6
9.a3 Bxc3 10.Bxc3 Ne4 11.Qc2 Nd7 12.b4 Nxc3 13.Qxc3 c5 14.dxc5 dxc5 15.
Rfd1 1/2-1/2

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.08.04"]
[Round "9"]
[White "Robatsch, Karl"]
[Black "Pomar Salamanca, Arturo"]
[Result "1/2-1/2"]
[ECO "B19"]
[EventDate "1966.07.22"]
[PlyCount "28"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.h4 h6 7.Nf3 Nd7 8.h5 Bh7
9.Bd3 Bxd3 10.Qxd3 Qc7 11.Bd2 e6 12.Qe2 Ngf6 13.Ne5 Bd6 14.f4 c5 1/2-1/2

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.08.04"]
[Round "9"]
[White "Szilagyi, Gyorgy"]
[Black "Szabo, Laszlo"]
[Result "0-1"]
[ECO "D03"]
[EventDate "1966.07.22"]
[PlyCount "80"]

1.d4 Nf6 2.Nf3 g6 3.Bg5 Bg7 4.Nbd2 d5 5.e3 c5 6.c3 O-O 7.Bd3 Nbd7 8.O-O b6
9.Qe2 Bb7 10.b4 Ne4 11.Bxe4 dxe4 12.Ne1 cxb4 13.cxb4 Rc8 14.Nb3 Bd5 15.Qa6
h6 16.Bh4 Bc4 17.Qxa7 Ra8 18.Qb7 Bxb3 19.Qxe4 Bc4 20.Bxe7 Re8 21.Bxd8 Rxe4
22.Bc7 Ree8 23.Bg3 Ra4 24.a3 Bxf1 25.Kxf1 Rc8 26.Ra2 Rc3 27.Nc2 Nf6 28.Ke2
Ne4 29.Rb2 Ra8 30.f3 Nxg3+ 31.hxg3 Rac8 32.Kd2 b5 33.g4 Bf6 34.Ra2 Rb3 35.
f4 Be7 36.Ke2 Kf8 37.f5 Bg5 38.e4 Rbc3 39.Kd1 Rd3+ 40.Ke1 Rd2 0-1

[Event "6th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1966.08.04"]
[Round "9"]
[White "Zuidema, Coenraad"]
[Black "Van Scheltinga, Theodore"]
[Result "1/2-1/2"]
[ECO "B69"]
[EventDate "1966.07.22"]
[PlyCount "132"]

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.Nf3 b5 11.Bxf6 gxf6 12.f5 Qb6 13.Bd3 O-O-O 14.Kb1 Ne5 15.
Rhf1 Ng4 16.Rde1 Bf8 17.Nd1 Bh6 18.Qc3+ Kb7 19.h3 Rc8 20.Qb3 Ne5 21.Nxe5 
fxe5 22.Rf3 Rc7 23.Nf2 Rhc8 24.a3 a5 25.c3 b4 26.axb4 axb4 27.Qxb4 Qxb4 
28.cxb4 Bd2 29.Rd1 Rc1+ 30.Rxc1 Rxc1+ 31.Ka2 exf5 32.exf5 Bc6 33.Be4 d5 
34.b5 dxe4 35.bxc6+ Kxc6 36.Nxe4 Bb4 37.Kb3 Re1 38.Kxb4 Rxe4+ 39.Kc3 Re2 
40.Rg3 Rf2 41.Rg7 Rxf5 42.Rxh7 Rf2 43.Rg7 Kd5 44.h4 e4 45.h5 Rf5 46.h6 Rh5
47.h7 Ke6 48.Kd4 Kf6 49.g4 Rh2 50.Rg8 Rxh7 51.Kxe4 Rh4 52.Kd5 Ke7 53.Kc5 
f6 54.b4 Kf7 55.Rd8 Rxg4 56.b5 Rg1 57.Rd2 Rc1+ 58.Kd6 Rb1 59.Rd5 Kg6 60.
Kc7 f5 61.b6 Kg5 62.b7 Kg4 63.Rd1 Rb2 64.Rd2 Rb1 65.Rd6 Rxb7+ 66.Kxb7 f4 
1/2-1/2

