[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "1"]
[White "Bouwmeester, Hans"]
[Black "Szabo, Laszlo"]
[Result "0-1"]
[ECO "A43"]
[EventDate "1965.??.??"]
[PlyCount "90"]

1.Nf3 g6 2.e4 Bg7 3.d4 c5 4.d5 d6 5.Be2 Na6 6.O-O Nc7 7.Nc3 a6 8.a4 Nf6 9.
Nd2 O-O 10.a5 Nb5 11.Re1 Nxc3 12.bxc3 Nd7 13.Ra3 b5 14.axb6 Nxb6 15.Nc4 
Bd7 16.Bf4 Nxc4 17.Bxc4 a5 18.Qd2 a4 19.Bh6 Qb6 20.Bxg7 Kxg7 21.h3 Rfb8 
22.Kh2 Bb5 23.Qd3 Bxc4 24.Qxc4 Qb2 25.Ra2 Qb5 26.Qxb5 Rxb5 27.Rea1 Kf6 28.
Kg3 a3 29.Rxa3 Rxa3 30.Rxa3 Rb2 31.Ra4 Rxc2 32.Rc4 g5 33.Kf3 Ke5 34.Ke3 h5
35.h4 g4 36.g3 f5 37.f4+ Kf6 38.e5+ Kf7 39.exd6 exd6 40.Kd3 Rg2 41.Ra4 
Rxg3+ 42.Kc4 Rf3 43.Kb5 g3 44.Ra7+ Kf6 45.Ra8 Rxf4 0-1

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "1"]
[White "Filip, Miroslav"]
[Black "Karaklajic, Nikola"]
[Result "1/2-1/2"]
[ECO "D38"]
[EventDate "1965.??.??"]
[PlyCount "53"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Bb4 5.cxd5 exd5 6.Bg5 Qd6 7.Nd2 O-O 8.e3 
Bxc3 9.bxc3 c5 10.Bd3 cxd4 11.cxd4 h6 12.Bh4 Qa3 13.Qb1 Nbd7 14.O-O b6 15.
Qb3 Qa5 16.Rfd1 Ba6 17.e4 Bxd3 18.Qxd3 dxe4 19.Nxe4 Nxe4 20.Qxe4 Qa4 21.
Qf3 Rac8 22.Bg3 Rc2 23.a3 Rfc8 24.h3 R2c3 25.Qb7 Re8 26.Kh2 Nf6 27.Re1 
1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "1"]
[White "Langeweg, Christian"]
[Black "Donner, Jan"]
[Result "0-1"]
[ECO "D10"]
[EventDate "1965.??.??"]
[PlyCount "80"]

1.d4 d5 2.c4 c6 3.Nc3 e5 4.cxd5 cxd5 5.e4 dxe4 6.Bb5+ Bd7 7.dxe5 Bb4 8.Bd2
Bxc3 9.Bxd7+ Qxd7 10.Bxc3 Ne7 11.Ne2 Nd5 12.O-O Nc6 13.Qa4 e3 14.f4 O-O 
15.Rad1 Rad8 16.Qb3 Qg4 17.Rxd5 Qxe2 18.Rxd8 Nxd8 19.a3 Ne6 20.Qxb7 Rd8 
21.g3 Qc2 22.Qg2 e2 23.Re1 Rd1 24.Qa8+ Rd8 25.Qf3 Rd1 26.Qa8+ Rd8 27.Qxa7 
Qe4 28.Qf2 Rd1 29.h4 h5 30.Kh2 Rxe1 31.Qxe1 Nc5 32.Qh1 Qc2 33.Qg2 Ne4 34.
Be1 Qd3 35.a4 Nd2 36.Qf2 Nf3+ 37.Kg2 Nd4 38.a5 Qe4+ 39.Kh2 Nf3+ 40.Kh3 
Nxe1 0-1

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "1"]
[White "Parma, Bruno"]
[Black "Barendregt, Johan"]
[Result "1/2-1/2"]
[ECO "C41"]
[EventDate "1965.??.??"]
[PlyCount "86"]

1.e4 d6 2.d4 Nf6 3.Nc3 e5 4.Nf3 Nbd7 5.Bc4 Be7 6.O-O c6 7.a4 Qc7 8.Ba2 O-O
9.h3 b6 10.Re1 a6 11.Nh4 Re8 12.Nf5 Bf8 13.Be3 Bb7 14.dxe5 dxe5 15.Qf3 b5 
16.Bg5 b4 17.Nb1 c5 18.Nd2 a5 19.Rad1 Ra6 20.Bc4 Rb6 21.Nf1 g6 22.Nh6+ 
Bxh6 23.Bxh6 Ba6 24.Ne3 Bxc4 25.Nxc4 Rbe6 26.Qd3 Nb6 27.b3 Nxc4 28.Qxc4 
Rd6 29.Be3 Red8 30.Rd3 Rxd3 31.cxd3 Rd6 32.d4 exd4 33.Bf4 Nd7 34.Bxd6 Qxd6
35.Qd5 Qe6 36.Qxe6 fxe6 37.Rc1 e5 38.Kf1 Kf7 39.Ke2 Ke6 40.Kd3 Kd6 41.h4 
Nb6 42.f4 exf4 43.e5+ Kc6 1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "1"]
[White "Zuidema, Coenraad"]
[Black "Trifunovic, Petar"]
[Result "1/2-1/2"]
[ECO "B05"]
[EventDate "1965.??.??"]
[PlyCount "53"]

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Bg4 5.Be2 e6 6.O-O Be7 7.h3 Bh5 8.c4 Nb6 
9.Nc3 O-O 10.exd6 cxd6 11.Be3 N6d7 12.b3 Nf6 13.Nd2 Bxe2 14.Qxe2 Nbd7 15.
Rfd1 Qa5 16.Rac1 Rfc8 17.Nf3 d5 18.c5 b6 19.Bd2 Qa3 20.Be1 Nb8 21.b4 bxc5 
22.dxc5 a5 23.Nb1 Qa4 24.a3 Na6 25.Rd4 Nc7 26.Ne5 Nb5 27.Rdd1 1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "2"]
[White "Barendregt, Johan"]
[Black "Langeweg, Christian"]
[Result "1/2-1/2"]
[ECO "C66"]
[EventDate "1965.??.??"]
[PlyCount "32"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6 5.d4 Bd7 6.Nc3 exd4 7.Nxd4 Be7 8.Bxc6
bxc6 9.Qf3 O-O 10.e5 Ng4 11.Nxc6 Nxe5 12.Nxe5 dxe5 13.Qg3 Bf5 14.Qxe5 Bxc2
15.Bf4 Rb8 16.Nd5 Bd6 1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "2"]
[White "Donner, Jan"]
[Black "Bouwmeester, Hans"]
[Result "1-0"]
[ECO "E25"]
[EventDate "1965.??.??"]
[PlyCount "81"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.f3 d5 7.cxd5 Nxd5 8.dxc5
f5 9.Qc2 O-O 10.e4 fxe4 11.fxe4 Nf4 12.Nf3 Nc6 13.g3 Ng6 14.Be2 Qe7 15.Be3
Nge5 16.Nxe5 Nxe5 17.Rf1 Rxf1+ 18.Kxf1 Bd7 19.Bd4 Rf8+ 20.Kg2 Nf7 21.h4 
Bc6 22.Rf1 e5 23.Be3 Qe6 24.Kh2 Bd7 25.Rf5 Qg6 26.Rf2 Bc6 27.Bd3 Rd8 28.
Bc4 Rd7 29.Rf5 h5 30.Rxe5 Kh7 31.Re6 Qg4 32.Bd5 g6 33.c4 Nd8 34.Rd6 Nf7 
35.Re6 Nd8 36.Rf6 Re7 37.Rf4 Qd7 38.Qf2 Ne6 39.Rf6 Qe8 40.Qf3 Ng7 41.Rf8 
1-0

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "2"]
[White "Szabo, Laszlo"]
[Black "Filip, Miroslav"]
[Result "1/2-1/2"]
[ECO "C98"]
[EventDate "1965.??.??"]
[PlyCount "42"]

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.Nh2 Be6 15.Ndf1 
g6 16.Ng3 Rfd8 17.Qf3 Kh8 18.Bg5 Ng8 19.Bc1 Nf6 20.Bg5 Ng8 21.Bc1 Nf6 
1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "2"]
[White "Trifunovic, Petar"]
[Black "Karaklajic, Nikola"]
[Result "1-0"]
[ECO "D06"]
[EventDate "1965.??.??"]
[PlyCount "89"]

1.Nf3 d5 2.d4 c5 3.c4 cxd4 4.cxd5 Nf6 5.Nxd4 Nxd5 6.Nb5 Qa5+ 7.N1c3 Nxc3 
8.Nxc3 e6 9.g3 Bd7 10.Bg2 Bc6 11.O-O Bxg2 12.Kxg2 Nc6 13.Qb3 Bb4 14.a3 
Bxc3 15.Qxb7 Qd5+ 16.e4 Na5 17.exd5 Nxb7 18.bxc3 exd5 19.Rd1 O-O-O 20.Be3 
a6 21.Rd4 Rhe8 22.c4 Re4 23.cxd5 Rxd4 24.Bxd4 Rxd5 25.Bxg7 Kd7 26.Rb1 Nd6 
27.Bf8 Nc4 28.Rb4 Nxa3 29.Rb7+ Kc6 30.Rxf7 Nb5 31.Rxh7 a5 32.Rh6+ Nd6 33.
h4 a4 34.Re6 Kc5 35.h5 a3 36.h6 a2 37.Re1 Kc4 38.h7 Nf7 39.Bg7 Rd8 40.Re7 
Nh8 41.Ra7 Kb3 42.f4 Rd2+ 43.Kh3 Rd8 44.f5 Rc8 45.g4 1-0

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "2"]
[White "Zuidema, Coenraad"]
[Black "Parma, Bruno"]
[Result "1/2-1/2"]
[ECO "B35"]
[EventDate "1965.??.??"]
[PlyCount "33"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Be3 Nf6 7.Bc4 Qa5 8.O-O 
O-O 9.Bb3 d6 10.f3 Bd7 11.Nde2 Rac8 12.Qe1 Rfe8 13.Rd1 Ne5 14.Qf2 b6 15.
Bd4 Nc6 16.Be3 Ne5 17.Bd4 1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "3"]
[White "Bouwmeester, Hans"]
[Black "Barendregt, Johan"]
[Result "1-0"]
[ECO "C41"]
[EventDate "1965.??.??"]
[PlyCount "80"]

1.e4 d6 2.d4 Nf6 3.Nc3 e5 4.Nf3 Nbd7 5.Bc4 Be7 6.O-O c6 7.a4 Qc7 8.Bb3 O-O
9.Qe2 h6 10.h3 Nh7 11.Be3 exd4 12.Nxd4 Nc5 13.Ba2 Ng5 14.f3 Bf6 15.Qf2 Re8
16.Rad1 a6 17.b4 Nce6 18.Nde2 Nf8 19.Qg3 Ng6 20.a5 Be6 21.Bxe6 Nxe6 22.Bb6
Qe7 23.Qxd6 Qxd6 24.Rxd6 Be7 25.Rd7 Bxb4 26.Rxb7 Ne5 27.Rb1 Re7 28.Rxe7 
Bxe7 29.Na4 Nc4 30.c3 Bd8 31.f4 Nxa5 32.f5 Ng5 33.Bxd8 Rxd8 34.Nc5 Nc4 35.
h4 Nh7 36.Nxa6 Nf6 37.Nc5 Re8 38.Rb4 Nd6 39.Ng3 Re5 40.Nd3 Re8 1-0

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "3"]
[White "Filip, Miroslav"]
[Black "Donner, Jan"]
[Result "1/2-1/2"]
[ECO "D36"]
[EventDate "1965.??.??"]
[PlyCount "50"]

1.c4 Nf6 2.Nc3 e6 3.Nf3 d5 4.d4 Be7 5.cxd5 exd5 6.Bg5 c6 7.Qc2 g6 8.e3 Bf5
9.Bd3 Bxd3 10.Qxd3 Nbd7 11.O-O O-O 12.Nd2 Re8 13.Rfe1 Ne4 14.Bxe7 Qxe7 15.
Rac1 f5 16.Nf1 Ndf6 17.Qc2 Rac8 18.f3 Ng5 19.Qf2 Nf7 20.Rcd1 Rf8 21.Ne2 b6
22.Nf4 Rfd8 23.h4 Kh8 24.Qg3 Re8 25.Qh3 Kg7 1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "3"]
[White "Karaklajic, Nikola"]
[Black "Szabo, Laszlo"]
[Result "1/2-1/2"]
[ECO "B44"]
[EventDate "1965.??.??"]
[PlyCount "85"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nxc6 bxc6 6.Bd3 Nf6 7.O-O d5 8.
exd5 cxd5 9.c4 dxc4 10.Bxc4 Qxd1 11.Rxd1 Bc5 12.Bb5+ Ke7 13.Nc3 Bb7 14.Na4
Bd6 15.Be3 Rhb8 16.Rxd6 Kxd6 17.Bc5+ Ke5 18.Re1+ Be4 19.Bc6 Kf5 20.Bxa8 
Rxa8 21.Nc3 Bc6 22.Bd4 Nd7 23.Ne2 e5 24.Rc1 Bd5 25.Be3 Bxa2 26.Ng3+ Kg6 
27.Rc7 Nb6 28.h4 Bd5 29.Re7 Nc4 30.Bxa7 Kf6 31.Rc7 Nxb2 32.f4 exf4 33.Bd4+
Ke6 34.Nh5 Kd6 35.Rc2 Nd3 36.Nxg7 Be4 37.Rd2 Kd5 38.Bf6 Ra6 39.Nh5 Ke6 40.
Bg5 Kf5 41.Nxf4 Ra1+ 42.Kh2 Ne5 43.Ne2 1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "3"]
[White "Langeweg, Christian"]
[Black "Zuidema, Coenraad"]
[Result "1-0"]
[ECO "D75"]
[EventDate "1965.??.??"]
[PlyCount "67"]

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.Ng5 Ndb4 10.Nc3 h6 11.Nf3 Be6 12.Bf4 Qxd1 13.Rfxd1 Nxc5 14.Be5 Rfd8 
15.Bxg7 Kxg7 16.Nd4 Rxd4 17.Rxd4 Nc2 18.Rad1 Nxd4 19.Rxd4 Rc8 20.f4 b6 21.
Kf2 h5 22.Bf1 Rh8 23.h4 Bc8 24.e4 e5 25.fxe5 Re8 26.b4 Nd7 27.Bb5 Re7 28.
Rc4 Re8 29.Rc7 Rd8 30.Bxd7 Bxd7 31.Rxa7 Be6 32.Nd5 b5 33.Nf4 Re8 34.Ke3 
1-0

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "3"]
[White "Parma, Bruno"]
[Black "Trifunovic, Petar"]
[Result "1-0"]
[ECO "C43"]
[EventDate "1965.??.??"]
[PlyCount "73"]

1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Ne4 5.Qxd4 d5 6.exd6 Nxd6 7.Nc3 Nc6 8.Qf4
Bf5 9.Bb5 Qe7+ 10.Be3 Nxb5 11.Nxb5 Qb4+ 12.Qxb4 Bxb4+ 13.c3 Ba5 14.b4 Bd3 
15.a4 a6 16.Nbd4 Nxd4 17.Bxd4 Bb6 18.O-O-O Bxd4 19.Rxd3 Bf6 20.Re1+ Kf8 
21.Rd7 Bxc3 22.Ree7 h5 23.Rxc7 Rh6 24.Kc2 Rc6 25.Rxf7+ Kg8 26.Rxc6 bxc6 
27.Rf4 Bf6 28.Nd4 Rc8 29.Nb3 Re8 30.Nc5 Re2+ 31.Kb3 Rb2+ 32.Ka3 Rd2 33.a5 
Be5 34.Rf3 Bd4 35.Rd3 Rxd3+ 36.Nxd3 Kf7 37.Kb3 1-0

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "4"]
[White "Barendregt, Johan"]
[Black "Filip, Miroslav"]
[Result "1/2-1/2"]
[ECO "B40"]
[EventDate "1965.??.??"]
[PlyCount "50"]

1.e4 c5 2.Nf3 e6 3.b4 cxb4 4.d4 Nf6 5.Bd3 Nc6 6.O-O d6 7.c4 bxc3 8.Nxc3 
Be7 9.d5 exd5 10.exd5 Nb8 11.Nd4 O-O 12.Re1 Re8 13.Bg5 h6 14.Bh4 g5 15.Bg3
Bf8 16.Rxe8 Nxe8 17.Qf3 Bg7 18.Re1 Nd7 19.Nf5 Ne5 20.Bxe5 dxe5 21.Nxg7 
Kxg7 22.Rxe5 Nf6 23.Ne4 Bg4 24.Qg3 Nxe4 25.Rxe4 Bf5 1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "4"]
[White "Donner, Jan"]
[Black "Karaklajic, Nikola"]
[Result "1-0"]
[ECO "E55"]
[EventDate "1965.??.??"]
[PlyCount "91"]

1.c4 e6 2.d4 Nf6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 c5 7.O-O dxc4 8.Bxc4 
Nbd7 9.Qe2 b6 10.Rd1 cxd4 11.exd4 Bb7 12.d5 Bxc3 13.dxe6 Bxf3 14.Qxf3 Ne5 
15.exf7+ Kh8 16.Rxd8 Nxf3+ 17.gxf3 Rfxd8 18.bxc3 Rd1+ 19.Kg2 Nd7 20.f4 h6 
21.Bb2 Rxa1 22.Bxa1 Rd8 23.Bb2 g6 24.Bd5 Kg7 25.c4+ Kf8 26.Kf3 Nc5 27.Ba3 
Rd6 28.Bb2 Rd7 29.Ke3 Re7+ 30.Be5 Nd7 31.Kd4 Nxe5 32.fxe5 Rc7 33.e6 Ke7 
34.Ke5 Rc8 35.f4 h5 36.h4 Rh8 37.a4 a6 38.Be4 Rc8 39.Bxg6 Rxc4 40.f5 Rc5+ 
41.Kf4 Rc8 42.Kg5 Rb8 43.Bxh5 b5 44.Bg4 bxa4 45.f6+ Kf8 46.Kg6 1-0

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "4"]
[White "Parma, Bruno"]
[Black "Langeweg, Christian"]
[Result "1-0"]
[ECO "C93"]
[EventDate "1965.??.??"]
[PlyCount "67"]

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.Nf1 Bd7 13.Ng3 Na5 14.Bc2 c5 15.b3 Nc6 
16.d5 Na7 17.Nh2 g6 18.f4 exf4 19.Bxf4 Nc8 20.Qf3 Bg7 21.e5 dxe5 22.Bxe5 
Nh7 23.Bxg7 Kxg7 24.Qf2 Rxe1+ 25.Rxe1 Qb6 26.Nf3 Nf6 27.Ne5 c4 28.Re3 Be8 
29.bxc4 bxc4 30.Nxc4 Qc7 31.Bb3 a5 32.Rf3 Qd8 33.Qd4 Ra6 34.Ne3 1-0

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "4"]
[White "Trifunovic, Petar"]
[Black "Szabo, Laszlo"]
[Result "1/2-1/2"]
[ECO "D32"]
[EventDate "1965.??.??"]
[PlyCount "39"]

1.Nf3 Nf6 2.d4 d5 3.c4 e6 4.Nc3 c5 5.e3 Nc6 6.cxd5 exd5 7.Be2 Ne4 8.O-O 
Be7 9.dxc5 Nxc3 10.bxc3 O-O 11.c4 dxc4 12.Bxc4 Qxd1 13.Rxd1 Bxc5 14.Bb2 
Bg4 15.h3 Bxf3 16.gxf3 Rad8 17.f4 Rxd1+ 18.Rxd1 Rd8 19.Rxd8+ Nxd8 20.Kg2 
1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "4"]
[White "Zuidema, Coenraad"]
[Black "Bouwmeester, Hans"]
[Result "1/2-1/2"]
[ECO "B17"]
[EventDate "1965.??.??"]
[PlyCount "42"]

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 O-O 12.Ngf3 Nbd5 13.a3 a5 14.O-O b6 15.c4
Ne7 16.b3 Bb7 17.Bb2 Nf5 18.Qc2 Nd4 19.Nxd4 Bxd4 20.Rad1 Bxb2 21.Qxb2 Qe7 
1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "5"]
[White "Bouwmeester, Hans"]
[Black "Parma, Bruno"]
[Result "1/2-1/2"]
[ECO "B09"]
[EventDate "1965.??.??"]
[PlyCount "34"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nc6 7.d5 Nb4 8.Be2 c6 
9.a3 Na6 10.Be3 Qc7 11.Nd2 Bd7 12.O-O Nc5 13.Bf3 cxd5 14.exd5 b5 15.Bd4 
Na4 16.Nxa4 bxa4 17.Ne4 Rab8 1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "5"]
[White "Filip, Miroslav"]
[Black "Zuidema, Coenraad"]
[Result "1/2-1/2"]
[ECO "D55"]
[EventDate "1965.??.??"]
[PlyCount "68"]

1.c4 Nf6 2.d4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bg5 O-O 6.e3 b6 7.Bd3 dxc4 8.Bxc4 
Bb7 9.O-O Ne4 10.Bf4 Bd6 11.Bg3 Nd7 12.Qe2 Bxg3 13.hxg3 Qe7 14.Rac1 c5 15.
Nxe4 Bxe4 16.Bb5 Rfd8 17.Rfd1 cxd4 18.Nxd4 Nf6 19.Bc6 Bxc6 20.Nxc6 Rxd1+ 
21.Qxd1 Qd7 22.Qxd7 Nxd7 23.Nd4 Nc5 24.b4 Nd3 25.Rc4 Kf8 26.a3 a5 27.Rc3 
Ne5 28.b5 Rd8 29.Kf1 Rd5 30.Ke2 Ke7 31.a4 Nd7 32.Nb3 f5 33.f3 Nf6 34.Nd4 
g6 1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "5"]
[White "Karaklajic, Nikola"]
[Black "Barendregt, Johan"]
[Result "0-1"]
[ECO "B07"]
[EventDate "1965.??.??"]
[PlyCount "78"]

1.e4 d6 2.d4 Nf6 3.Nc3 e5 4.dxe5 dxe5 5.Qxd8+ Kxd8 6.Bc4 Be6 7.Bxe6 fxe6 
8.Nf3 Bd6 9.Be3 Ke7 10.h3 Nc6 11.O-O-O a6 12.a3 b5 13.Rhe1 Rhb8 14.Nd2 Na5
15.g3 Rb7 16.f4 Nd7 17.f5 Rab8 18.fxe6 Kxe6 19.Nd5 Nc4 20.Nf3 h6 21.Bg1 c6
22.Ne3 Nxe3 23.Bxe3 Nb6 24.Bxb6 Rxb6 25.Nh4 a5 26.Rd3 a4 27.Red1 Bf8 28.c3
c5 29.Ng6 Bd6 30.Rd5 b4 31.cxb4 cxb4 32.axb4 Rc6+ 33.Kb1 Rxb4 34.Ra5 Rcb6 
35.Rd2 Rxe4 36.Ra8 a3 37.Re8+ Kf7 38.Rd8 Bc5 39.Nh8+ Kf6 0-1

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "5"]
[White "Langeweg, Christian"]
[Black "Trifunovic, Petar"]
[Result "0-1"]
[ECO "D30"]
[EventDate "1965.??.??"]
[PlyCount "30"]

1.d4 d5 2.c4 e6 3.Nf3 c5 4.cxd5 exd5 5.g3 Nc6 6.Bg2 Nf6 7.O-O Be7 8.dxc5 
Bxc5 9.Nbd2 O-O 10.Nb3 Bb6 11.Nbd4 Re8 12.Re1 Ng4 13.Bg5 Qd6 14.h3 Nxf2 
15.Kxf2 Nxd4 0-1

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "5"]
[White "Szabo, Laszlo"]
[Black "Donner, Jan"]
[Result "1/2-1/2"]
[ECO "E31"]
[EventDate "1965.??.??"]
[PlyCount "41"]

1.c4 e6 2.Nc3 Nf6 3.d4 Bb4 4.Bg5 h6 5.Bh4 c5 6.d5 d6 7.e3 exd5 8.cxd5 Nbd7
9.Ne2 Ne5 10.a3 Ba5 11.Nc1 Bd7 12.Na2 Ng6 13.Bg3 Ne4 14.Be2 Nxg3 15.hxg3 
O-O 16.O-O Qe7 17.Qc2 f5 18.Nc1 Ne5 19.Nd3 Nxd3 20.Bxd3 Qe5 21.Rad1 
1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "6"]
[White "Barendregt, Johan"]
[Black "Szabo, Laszlo"]
[Result "1/2-1/2"]
[ECO "B31"]
[EventDate "1965.??.??"]
[PlyCount "72"]

1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.c3 Nf6 6.Re1 O-O 7.d4 Qb6 8.Bc4 
cxd4 9.e5 Ne8 10.cxd4 d6 11.Nc3 Bg4 12.Nd5 Qd8 13.Bg5 Qd7 14.Bb5 f6 15.
Nxe7+ Qxe7 16.exf6 Qf7 17.fxg7 Nxg7 18.Be2 Rae8 19.Be3 Nf5 20.Qd2 Nxe3 21.
fxe3 Re7 22.Rf1 Qd5 23.b3 Kg7 24.Rae1 Rfe8 25.Bc4 Qa5 26.Qxa5 Nxa5 27.Bb5 
Rc8 28.h3 Bf5 29.g4 Be4 30.Nd2 Rc3 31.Nxe4 Rxe4 32.Rf3 a6 33.Bf1 Rxd4 34.
exd4 Rxf3 35.Re7+ Rf7 36.Rxf7+ Kxf7 1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "6"]
[White "Langeweg, Christian"]
[Black "Bouwmeester, Hans"]
[Result "1/2-1/2"]
[ECO "D27"]
[EventDate "1965.??.??"]
[PlyCount "40"]

1.Nf3 d5 2.c4 dxc4 3.e3 Nf6 4.Bxc4 e6 5.O-O a6 6.a4 c5 7.d4 Nc6 8.Qe2 Be7 
9.Rd1 Qc7 10.Nc3 O-O 11.Bd2 Rd8 12.Be1 Bd7 13.h3 cxd4 14.exd4 Be8 15.Rac1 
Bb4 16.Ne4 Qf4 17.Nxf6+ Qxf6 18.d5 exd5 19.Bxd5 Bxe1 20.Rxe1 g6 1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "6"]
[White "Parma, Bruno"]
[Black "Filip, Miroslav"]
[Result "1-0"]
[ECO "C72"]
[EventDate "1965.??.??"]
[PlyCount "61"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.O-O Bd7 6.d4 b5 7.Bb3 Nxd4 8.Nxd4 
exd4 9.c3 dxc3 10.Qh5 Qf6 11.Nxc3 c6 12.Re1 g6 13.Qd1 Be7 14.Be3 Qg7 15.
Bf4 Be6 16.Bxd6 Bxb3 17.axb3 Bxd6 18.Qxd6 Qf6 19.Qc7 Ne7 20.e5 Qe6 21.Ne4 
Kf8 22.Nc5 Qf5 23.Rad1 Rc8 24.Qd6 Re8 25.Nd7+ Kg7 26.Nf6 h5 27.Nxe8+ Rxe8 
28.e6 Nd5 29.e7 Nf6 30.Qxc6 Rc8 31.Qf3 1-0

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "6"]
[White "Trifunovic, Petar"]
[Black "Donner, Jan"]
[Result "1/2-1/2"]
[ECO "D41"]
[EventDate "1965.??.??"]
[PlyCount "29"]

1.Nf3 d5 2.d4 Nf6 3.c4 e6 4.Nc3 c5 5.cxd5 Nxd5 6.g3 b6 7.Nxd5 Qxd5 8.Bg2 
Bb7 9.O-O Be7 10.Be3 O-O 11.dxc5 Bxc5 12.Qxd5 Bxd5 13.Bxc5 bxc5 14.Ne5 f6 
15.Nd3 1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "6"]
[White "Zuidema, Coenraad"]
[Black "Karaklajic, Nikola"]
[Result "0-1"]
[ECO "B01"]
[EventDate "1965.??.??"]
[PlyCount "84"]

1.e4 d5 2.exd5 Nf6 3.d4 Nxd5 4.Nf3 Bg4 5.c4 Nb6 6.c5 N6d7 7.Qb3 Nc6 8.Be3 
Bxf3 9.gxf3 Rb8 10.d5 Nce5 11.Be2 h5 12.Nc3 c6 13.f4 Ng4 14.O-O-O Nxe3 15.
fxe3 Qa5 16.Ne4 Nxc5 17.Nxc5 Qxc5+ 18.Kb1 Qb6 19.dxc6 bxc6 20.Bf3 Rh6 21.
Qc2 e5 22.Rd3 Be7 23.Rb3 Qc7 24.Bxc6+ Kf8 25.Rxb8+ Qxb8 26.Bd5 exf4 27.Rf1
Rb6 28.Bb3 g6 29.Qc4 Rf6 30.Rxf4 Qe5 31.Rxf6 Qxf6 32.Qc8+ Kg7 33.Qc3 Qxc3 
34.bxc3 f5 35.Kc2 g5 36.h3 g4 37.hxg4 fxg4 38.Kd3 Kf6 39.Ke2 Kg5 40.Kf1 h4
41.Be6 h3 42.c4 Kh4 0-1

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "7"]
[White "Bouwmeester, Hans"]
[Black "Trifunovic, Petar"]
[Result "1/2-1/2"]
[ECO "D13"]
[EventDate "1965.??.??"]
[PlyCount "24"]

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.cxd5 cxd5 5.Nc3 Nc6 6.Bf4 e6 7.e3 Bd6 8.Bxd6 
Qxd6 9.Bd3 O-O 10.O-O Bd7 11.Rc1 Rfc8 12.Qe2 Be8 1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "7"]
[White "Donner, Jan"]
[Black "Barendregt, Johan"]
[Result "1-0"]
[ECO "A53"]
[EventDate "1965.??.??"]
[PlyCount "39"]

1.d4 d6 2.Nf3 Nf6 3.c4 Bf5 4.Nc3 Nbd7 5.Nh4 e6 6.g3 Ne4 7.Nxf5 exf5 8.Nxe4
fxe4 9.Bg2 f5 10.f3 d5 11.cxd5 Bb4+ 12.Bd2 Bxd2+ 13.Qxd2 Nf6 14.fxe4 fxe4 
15.Qg5 O-O 16.O-O Qd7 17.Rf5 c6 18.Raf1 h6 19.Qg6 Nxd5 20.Bxe4 1-0

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "7"]
[White "Filip, Miroslav"]
[Black "Langeweg, Christian"]
[Result "1/2-1/2"]
[ECO "A56"]
[EventDate "1965.??.??"]
[PlyCount "42"]

1.d4 Nf6 2.c4 c5 3.d5 e5 4.Nc3 d6 5.e4 g6 6.Be2 Bg7 7.Nf3 O-O 8.O-O Ne8 9.
Ne1 f5 10.exf5 gxf5 11.Nd3 Nd7 12.f4 e4 13.Nf2 Bxc3 14.bxc3 Ndf6 15.Be3 
Kh8 16.Kh1 Rg8 17.Qd2 b6 18.Nd1 Rb8 19.Bf2 Ng4 20.Bxg4 Rxg4 21.Ne3 Rg6 
1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "7"]
[White "Karaklajic, Nikola"]
[Black "Parma, Bruno"]
[Result "1/2-1/2"]
[ECO "E59"]
[EventDate "1965.??.??"]
[PlyCount "34"]

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 Bxc3 
9.bxc3 Qc7 10.Qc2 dxc4 11.Bxc4 e5 12.Bd3 Re8 13.e4 c4 14.Bxc4 exd4 15.cxd4
Na5 16.Bd3 Qxc2 17.Bxc2 Nxe4 1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "7"]
[White "Szabo, Laszlo"]
[Black "Zuidema, Coenraad"]
[Result "1-0"]
[ECO "E26"]
[EventDate "1965.??.??"]
[PlyCount "77"]

1.c4 Nf6 2.Nc3 e6 3.d4 Bb4 4.e3 c5 5.a3 Bxc3+ 6.bxc3 b6 7.Bd3 Bb7 8.f3 O-O
9.e4 Ne8 10.Be3 Nc6 11.Ne2 Ba6 12.Qa4 Na5 13.dxc5 d6 14.cxb6 axb6 15.Kf2 
Qc8 16.Rhb1 Bxc4 17.Qc2 Bxd3 18.Qxd3 Nc4 19.Rb4 d5 20.exd5 exd5 21.Bxb6 
Qc6 22.Bd4 Rxa3 23.Rxa3 Nxa3 24.Nf4 Nc7 25.Rb6 Qa4 26.Rb7 Rc8 27.Qf5 Qc2+ 
28.Qxc2 Nxc2 29.Be5 Ne8 30.Nxd5 Kf8 31.Rb8 Rxb8 32.Bxb8 f6 33.Ke2 Kf7 34.
Kd2 Na3 35.Kd3 Ke6 36.c4 Nd6 37.Ne3 Nb7 38.Kc3 Na5 39.Bg3 1-0

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "8"]
[White "Bouwmeester, Hans"]
[Black "Filip, Miroslav"]
[Result "1/2-1/2"]
[ECO "B17"]
[EventDate "1965.??.??"]
[PlyCount "35"]

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 O-O 13.O-O Nxe5 14.Nxe5 b6 
15.Bf4 Bb7 16.Rad1 Qe7 17.c3 Rfd8 18.Bc2 1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "8"]
[White "Langeweg, Christian"]
[Black "Karaklajic, Nikola"]
[Result "0-1"]
[ECO "A09"]
[EventDate "1965.??.??"]
[PlyCount "56"]

1.Nf3 d5 2.c4 e6 3.g3 dxc4 4.Bg2 Nd7 5.Qa4 a6 6.Qxc4 c5 7.Qc2 Ngf6 8.O-O 
b6 9.Nc3 Bb7 10.d4 Rc8 11.Rd1 Be7 12.Bg5 cxd4 13.Nxd4 Bxg2 14.Kxg2 Qc7 15.
e4 O-O 16.f3 h6 17.Bf4 Qb7 18.g4 Bb4 19.Nde2 Rfe8 20.Rd2 b5 21.a3 Bxc3 22.
Nxc3 Nc5 23.Rad1 e5 24.Be3 Na4 25.Rd3 Rc6 26.Qb3 Qc8 27.Nd5 Nxd5 28.Rxd5 
Nxb2 0-1

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "8"]
[White "Parma, Bruno"]
[Black "Szabo, Laszlo"]
[Result "1/2-1/2"]
[ECO "B42"]
[EventDate "1965.??.??"]
[PlyCount "33"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 Nf6 6.O-O d6 7.f4 Be7 8.Kh1 
Nbd7 9.Qe2 Qc7 10.Bd2 b6 11.Nc3 Bb7 12.Rae1 h5 13.e5 dxe5 14.fxe5 Ng4 15.
Bf4 Nc5 16.Ne4 Nxe4 17.Bxe4 1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "8"]
[White "Trifunovic, Petar"]
[Black "Barendregt, Johan"]
[Result "1/2-1/2"]
[ECO "B39"]
[EventDate "1965.??.??"]
[PlyCount "31"]

1.Nf3 c5 2.c4 g6 3.d4 cxd4 4.Nxd4 Bg7 5.e4 Nc6 6.Be3 Nf6 7.Nc3 Ng4 8.Qxg4 
Bxd4 9.Bxd4 Nxd4 10.O-O-O d6 11.Qh4 e5 12.Qxd8+ Kxd8 13.Ne2 Nxe2+ 14.Bxe2 
Ke7 15.b3 Be6 16.Kb2 1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "8"]
[White "Zuidema, Coenraad"]
[Black "Donner, Jan"]
[Result "1/2-1/2"]
[ECO "B16"]
[EventDate "1965.??.??"]
[PlyCount "36"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ gxf6 6.Nf3 Bf5 7.Be2 e6 8.
Bf4 Bg7 9.O-O O-O 10.c4 Nd7 11.Qd2 Bg6 12.Rad1 Re8 13.Rfe1 c5 14.dxc5 Nxc5
15.Qb4 Qb6 16.Qa3 Bf8 17.Be3 a5 18.Qc3 e5 1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "9"]
[White "Barendregt, Johan"]
[Black "Zuidema, Coenraad"]
[Result "0-1"]
[ECO "C68"]
[EventDate "1965.??.??"]
[PlyCount "176"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O Bg4 6.h3 h5 7.d3 Qf6 8.Nbd2 
Ne7 9.Re1 Ng6 10.d4 Bd6 11.hxg4 hxg4 12.Nh2 Rxh2 13.Qxg4 Qh4 14.Qxh4 Rxh4 
15.Nf3 Rh5 16.dxe5 Nxe5 17.Nxe5 Bxe5 18.c3 O-O-O 19.Be3 g5 20.Kf1 g4 21.
Ke2 Rh2 22.Rg1 Re8 23.f4 gxf3+ 24.Kxf3 Rg8 25.Bf2 Rh6 26.Raf1 Bh2 27.Rh1 
Rf6+ 28.Ke3 Rxg2 29.Bh4 Rh6 30.Bf6 c5 31.e5 Kd7 32.Kf3 Rxb2 33.Bg5 Rg6 34.
Bf4 Bxf4 35.Kxf4 Rgg2 36.Ke4 Rgf2 37.Kd5 Rxa2 38.Kxc5 Ra5+ 39.Kd4 Ra4+ 40.
c4 Rxf1 41.Rxf1 Ke7 42.Kd5 c6+ 43.Kc5 b5 44.cxb5 cxb5 45.Rf6 Ra1 46.Rb6 
Ra5 47.Kd4 Ra4+ 48.Kd5 b4 49.Rb7+ Kf8 50.Kc4 Ra5 51.Kxb4 Rxe5 52.Ra7 Rb5+ 
53.Kc4 Ra5 54.Kd4 Kg7 55.Ke4 Kg6 56.Ra8 Ra4+ 57.Ke5 Ra5+ 58.Ke4 Kf6 59.Ra7
Ke6 60.Ra8 Ra4+ 61.Kf3 Kf5 62.Rh8 Ra3+ 63.Kf2 Kf4 64.Rh4+ Kg5 65.Rc4 f5 
66.Rd4 f4 67.Rd8 a5 68.Rg8+ Kf5 69.Rf8+ Ke4 70.Re8+ Kd3 71.Kf3 Ra4 72.Ra8 
Kc3 73.Ra7 Kb3 74.Ra8 Kc2 75.Ra7 Kc3 76.Ra8 Kd3 77.Ra7 Ra1 78.Kxf4 a4 79.
Kf3 a3 80.Ra8 Kc3 81.Rc8+ Kb3 82.Rb8+ Ka2 83.Ke2 Rb1 84.Rc8 Rb5 85.Kd2 Kb3
86.Rc3+ Kb4 87.Rc1 a2 88.Ra1 Kb3 0-1

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "9"]
[White "Donner, Jan"]
[Black "Parma, Bruno"]
[Result "1/2-1/2"]
[ECO "E58"]
[EventDate "1965.??.??"]
[PlyCount "31"]

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 Bxc3 
9.bxc3 Qc7 10.cxd5 exd5 11.Nh4 Ne7 12.a4 Ng6 13.Nf5 c4 14.Bc2 Ne4 15.Ng3 
Nxg3 16.hxg3 1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "9"]
[White "Filip, Miroslav"]
[Black "Trifunovic, Petar"]
[Result "1/2-1/2"]
[ECO "B17"]
[EventDate "1965.??.??"]
[PlyCount "46"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Bc4 Ngf6 6.Nxf6+ Nxf6 7.c3 b5 8.
Be2 e6 9.Nf3 Bb7 10.O-O Be7 11.Ne5 O-O 12.Bf3 Qb6 13.Bg5 Rad8 14.Nd3 b4 
15.Qc2 Ba6 16.Rfd1 Bxd3 17.Rxd3 c5 18.dxc5 Bxc5 19.Rad1 bxc3 20.Rxd8 Rxd8 
21.Rxd8+ Qxd8 22.Qxc3 Bd4 23.Qd2 Qb6 1/2-1/2

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "9"]
[White "Karaklajic, Nikola"]
[Black "Bouwmeester, Hans"]
[Result "1-0"]
[ECO "C55"]
[EventDate "1965.??.??"]
[PlyCount "107"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.O-O Nf6 5.d4 Bxd4 6.Nxd4 Nxd4 7.Bg5 d6 8.f4 
Be6 9.Na3 Bxc4 10.Nxc4 Ne6 11.fxe5 Nxg5 12.exf6 gxf6 13.Qd5 O-O 14.h4 Ne6 
15.Rf2 c6 16.Qxd6 Qxd6 17.Nxd6 Rfd8 18.e5 fxe5 19.Nxf7 Rd4 20.Re1 Rxh4 21.
Nxe5 Re8 22.Nd7 Kg7 23.Nf6 Re7 24.Re5 Rd4 25.Nh5+ Kg8 26.Re3 Rd1+ 27.Kh2 
Rd8 28.Rf6 Rde8 29.Rg3+ Kh8 30.Rgf3 Kg8 31.R6f5 Rf8 32.Nf6+ Kh8 33.Re5 
Rff7 34.c3 Ng7 35.Ng4 h5 36.Rxe7 Rxe7 37.Nf6 Re6 38.a4 Rd6 39.a5 Rd2 40.
Rg3 Rd8 41.Rg6 Nf5 42.Nxh5 Rd6 43.Rg5 Ne3 44.Kh3 Nd1 45.g4 Nxb2 46.Rg7 Nc4
47.Rxb7 Nxa5 48.Rxa7 Nc4 49.g5 Kg8 50.Kg4 Ne3+ 51.Kf4 Ng2+ 52.Ke5 Rd5+ 53.
Ke6 Kh8 54.Ra8+ 1-0

[Event "5th IBM tournament"]
[Site "Amsterdam NED"]
[Date "1965.??.??"]
[Round "9"]
[White "Szabo, Laszlo"]
[Black "Langeweg, Christian"]
[Result "1/2-1/2"]
[ECO "A56"]
[EventDate "1965.??.??"]
[PlyCount "65"]

1.d4 Nf6 2.c4 c5 3.d5 e5 4.Nc3 d6 5.e4 g6 6.Nge2 Bg7 7.Ng3 Na6 8.Be2 h5 9.
h4 Nc7 10.a3 Bh6 11.Bxh6 Rxh6 12.Qd2 Rh8 13.Nf1 Kf8 14.Ne3 a6 15.b4 b6 16.
f3 cxb4 17.axb4 a5 18.bxa5 bxa5 19.c5 dxc5 20.Nc4 Nd7 21.Rxa5 Ba6 22.Ne3 
Bxe2 23.Rxa8 Nxa8 24.Kxe2 Kg7 25.Qd3 Nab6 26.Qb5 Qc7 27.Ra1 c4 28.Qc6 Qb8 
29.Nb5 Rc8 30.Qd6 Nxd5 31.Qxb8 Nf4+ 32.Kd1 Rxb8 33.Nd6 1/2-1/2

