[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.15"]
[Round "1"]
[White "Hort, Vlastimil"]
[Black "Langeweg, Christian"]
[Result "1-0"]
[WhiteElo "2595"]
[BlackElo "2420"]
[ECO "A62"]
[EventDate "1983.07.15"]
[PlyCount "81"]

1.d4 Nf6 2.c4 e6 3.g3 c5 4.d5 exd5 5.cxd5 d6 6.Nc3 g6 7.Bg2 Bg7 8.Nf3 O-O 
9.O-O Nbd7 10.Bf4 Qe7 11.Re1 a6 12.a4 Ng4 13.Qb3 Rb8 14.Bg5 f6 15.Bd2 b6 
16.h3 Nh6 17.Qc2 Nf7 18.b3 b5 19.axb5 axb5 20.e4 b4 21.Nd1 Nb6 22.Nb2 Re8 
23.Nc4 Nxc4 24.Qxc4 Bd7 25.Ra7 Qd8 26.h4 Re7 27.Qc2 Ra8 28.Rea1 Rb8 29.
R1a5 Qe8 30.Bf4 Rd8 31.Nd2 g5 32.hxg5 fxg5 33.Be3 h6 34.Nc4 Bg4 35.f4 Rxa7
36.Rxa7 Rd7 37.Ra6 gxf4 38.gxf4 Qe7 39.Qf2 Bf6 40.e5 Bh4 41.Qc2 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.15"]
[Round "1"]
[White "Kuijf, Marinus"]
[Black "Sax, Gyula"]
[Result "0-1"]
[WhiteElo "2420"]
[BlackElo "2570"]
[ECO "B81"]
[EventDate "1983.07.15"]
[PlyCount "74"]

1.e4 c5 2.Ne2 e6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.g4 h6 7.Rg1 Be7 8.Be3 a6 
9.Qe2 g5 10.O-O-O Nbd7 11.h4 Rg8 12.hxg5 hxg5 13.Qd2 Nh7 14.f3 Ne5 15.Rh1 
Nf8 16.Rh5 b5 17.Be2 Bb7 18.Rdh1 Bf6 19.Nd1 d5 20.exd5 Qxd5 21.Nc3 Qd7 22.
Rd1 O-O-O 23.Ne4 Bxe4 24.fxe4 Qc7 25.Qb4 Be7 26.Qb3 Nfd7 27.Nxe6 fxe6 28.
Qxe6 Nc6 29.e5 Rge8 30.Bf3 Bc5 31.Qb3 Ncxe5 32.Bxg5 Be7 33.Bxe7 Rxe7 34.
Rh6 Nc5 35.Rxd8+ Qxd8 36.Qc3 Rc7 37.Qe3 Nxf3 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.15"]
[Round "1"]
[White "Henley, Ron"]
[Black "Grooten, Herman"]
[Result "1-0"]
[WhiteElo "2525"]
[BlackElo "2340"]
[ECO "E32"]
[EventDate "1983.07.15"]
[PlyCount "61"]

1.d4 Nf6 2.Nf3 e6 3.c4 b6 4.Nc3 Bb4 5.Qb3 c5 6.e3 Bb7 7.a3 Bxc3+ 8.Qxc3 
Ne4 9.Qc2 d6 10.b4 Nd7 11.Bb2 O-O 12.Bd3 f5 13.O-O Rc8 14.dxc5 bxc5 15.Nd2
Qh4 16.f3 Nxd2 17.Qxd2 e5 18.f4 Rf6 19.fxe5 Rg6 20.Rf2 Nxe5 21.Bxe5 dxe5 
22.Bxf5 Rd8 23.Qe2 Rf6 24.Raf1 e4 25.bxc5 Qg5 26.Rf4 Rd3 27.Qb2 Bc6 28.
Be6+ Kf8 29.Qb8+ Be8 30.Bd5 Ke7 31.Qc7+ 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.15"]
[Round "1"]
[White "Ree, Hans"]
[Black "Bohm, Hans"]
[Result "1-0"]
[WhiteElo "2500"]
[BlackElo "2390"]
[ECO "A04"]
[EventDate "1983.07.15"]
[PlyCount "111"]

1.Nf3 f5 2.d3 Nf6 3.Bg5 d5 4.Nbd2 e6 5.e4 Be7 6.exf5 exf5 7.g3 O-O 8.Bg2 
Nh5 9.Bxe7 Qxe7+ 10.Qe2 Qxe2+ 11.Kxe2 Re8+ 12.Kd1 f4 13.Re1 Rxe1+ 14.Kxe1 
Nd7 15.Nb3 Ndf6 16.Kf1 c6 17.Re1 g6 18.Nfd4 Kf7 19.Nc5 fxg3 20.hxg3 b6 21.
Nce6 Bxe6 22.Nxe6 Re8 23.Nd4 Rxe1+ 24.Kxe1 c5 25.Nb5 a5 26.Nd6+ Ke6 27.Nc8
b5 28.Bh3+ Ke5 29.Na7 b4 30.Nc6+ Kd6 31.Nxa5 Ng7 32.Ke2 g5 33.Nb7+ Kc6 34.
Nd8+ Kc7 35.Ne6+ Nxe6 36.Bxe6 Kd6 37.Bc8 h5 38.Ke3 d4+ 39.Kf3 Ke5 40.Bb7 
Ne8 41.a4 bxa3 42.bxa3 Nf6 43.a4 Kd6 44.Be4 Kc7 45.Bg6 Kb6 46.Bxh5 Ka5 47.
Bf7 Kxa4 48.g4 Kb5 49.Kg3 Kc6 50.f4 gxf4+ 51.Kxf4 Kd6 52.g5 Nd7 53.g6 Ke7 
54.Kf5 Nf6 55.Kg5 Nd7 56.Bb3 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.15"]
[Round "1"]
[White "Seirawan, Yasser"]
[Black "Ligterink, Gert"]
[Result "1/2-1/2"]
[WhiteElo "2605"]
[BlackElo "2430"]
[ECO "A22"]
[EventDate "1983.07.15"]
[PlyCount "165"]

1.c4 e5 2.Nc3 Nf6 3.e3 Bb4 4.Nge2 b6 5.a3 Bxc3 6.Nxc3 Bb7 7.Be2 O-O 8.O-O 
d5 9.cxd5 Nxd5 10.d4 exd4 11.Nxd5 Bxd5 12.Qxd4 c5 13.Qc3 Bb7 14.b4 Nd7 15.
Rd1 Qe7 16.Bb2 f6 17.Rd2 Rac8 18.Rad1 Rc7 19.f3 Rfc8 20.e4 Kh8 21.Qb3 h6 
22.Rd6 Nf8 23.e5 fxe5 24.Qe3 Qg5 25.Qxe5 cxb4 26.axb4 Rc2 27.Kf1 Qxe5 28.
Bxe5 Kg8 29.Bd3 R2c6 30.Rxc6 Rxc6 31.b5 Rc8 32.Ra1 Nd7 33.Bd6 Ra8 34.Bc4+ 
Kh7 35.Re1 Nf6 36.Re7 Bd5 37.Bxd5 Nxd5 38.Rb7 Kg6 39.Be5 Nf6 40.f4 Rd8 41.
Rxa7 Rd5 42.h3 h5 43.Kf2 Rxb5 44.Kg3 Rd5 45.Kh4 Rd7 46.Ra6 Rb7 47.g4 hxg4 
48.hxg4 Kf7 49.Bd4 Nd5 50.Be5 Re7 51.Ra8 Re8 52.Ra3 Re7 53.Rb3 Rb7 54.Rb5 
Nc7 55.Bxc7 Rxc7 56.Rxb6 Rc5 57.f5 Kg8 58.Rb8+ Kf7 59.Kh5 Ra5 60.Rb7+ Kg8 
61.Kg6 Ra6+ 62.Kg5 Ra5 63.Rd7 Ra1 64.Rd5 Kf7 65.Rc5 Rb1 66.Kh4 Rh1+ 67.Kg5
Ra1 68.Rc7+ Kg8 69.Rc3 Kf7 70.Rc4 Rb1 71.Rc7+ Kg8 72.Re7 Kf8 73.Ra7 Kg8 
74.Kh4 Rh1+ 75.Kg3 Rg1+ 76.Kh3 Rh1+ 77.Kg2 Rb1 78.Ra5 Kf7 79.g5 Rb3 80.
Ra7+ Kf8 81.g6 Rc3 82.Kf2 Rb3 83.Ke2 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.15"]
[Round "1"]
[White "Lobron, Eric"]
[Black "De Boer, Gert Jan"]
[Result "1/2-1/2"]
[WhiteElo "2480"]
[BlackElo "2330"]
[ECO "B08"]
[EventDate "1983.07.15"]
[PlyCount "169"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.h3 O-O 6.Be3 c6 7.Bd3 Nbd7 8.e5 Ne8 
9.e6 fxe6 10.Ng5 Ndf6 11.h4 e5 12.dxe5 Ng4 13.Bc4+ d5 14.Nxd5 cxd5 15.
Bxd5+ Kh8 16.Nf7+ Rxf7 17.Bxf7 Qxd1+ 18.Rxd1 Bf5 19.Bc5 Nxe5 20.Bb3 Nc6 
21.c3 Nf6 22.O-O Bf8 23.Rfe1 Kg7 24.f3 h5 25.Be6 Bxe6 26.Rxe6 Kf7 27.Rde1 
Rd8 28.b4 Rd7 29.R6e2 b6 30.Bf2 Bh6 31.Rc2 Bf4 32.g3 Bc7 33.Kg2 Ne5 34.c4 
Nd3 35.Rb1 Nxf2 36.Kxf2 e5 37.Ke2 e4 38.f4 Rd3 39.Rb3 Rxb3 40.axb3 a5 41.
Ra2 Ke6 42.Ra4 axb4 43.Rxb4 Ng4 44.Rb5 Nh6 45.Rg5 Kf6 46.Ke3 Nf7 47.Rd5 
Nd6 48.Rg5 Bd8 49.Rd5 Be7 50.Re5 Kf7 51.Rd5 Nf5+ 52.Kxe4 Nxg3+ 53.Kf3 Nf5 
54.Rd7 Nxh4+ 55.Kg3 Nf5+ 56.Kh3 Ke6 57.Rb7 Bd8 58.b4 Kd6 59.Rb8 Bc7 60.Rg8
Ne7 61.Rf8 Kd7 62.Rf6 Bd6 63.Kh4 Kc7 64.c5 bxc5 65.bxc5 Bxc5 66.Kg5 Kd7 
67.Ra6 Bd6 68.f5 gxf5 69.Kxh5 Bf4 70.Rf6 Be3 71.Kh4 Ke8 72.Re6 Bf4 73.Rd6 
Bc1 74.Kh5 Bb2 75.Rb6 Bg7 76.Kg5 Kf7 77.Ra6 Bb2 78.Kf4 Bf6 79.Ra2 Bg7 80.
Ra7 Bh6+ 81.Ke5 f4 82.Ke4 Bg5 83.Rb7 Ke6 84.Rb6+ Kd7 85.Rb5 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.15"]
[Round "1"]
[White "Borm, Franciscus"]
[Black "Franco Ocampos, Zenon"]
[Result "0-1"]
[WhiteElo "2355"]
[BlackElo "2495"]
[ECO "B58"]
[EventDate "1983.07.15"]
[PlyCount "73"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 e5 7.Nf3 h6 8.O-O 
Be7 9.Re1 O-O 10.h3 a6 11.Bf1 Qc7 12.Be3 Bd7 13.Nh2 Rac8 14.Ng4 Be6 15.Rc1
Nxg4 16.hxg4 Bg5 17.Nd5 Qd8 18.Bxg5 Qxg5 19.Ne3 Rfd8 20.c3 Ne7 21.Rc2 Bxa2
22.Rd2 Be6 23.Rxd6 Rxd6 24.Qxd6 Nc6 25.Bc4 Bxg4 26.Bd5 h5 27.Nxg4 Qxg4 28.
Bxc6 Rxc6 29.Qxe5 Rg6 30.Qh2 h4 31.Kf1 b5 32.f3 Qh5 33.Rd1 Rg3 34.Rd8+ Kh7
35.Rd4 h3 36.gxh3 Qxf3+ 37.Ke1 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.15"]
[Round "1"]
[White "Sunye Neto, Jaime"]
[Black "Boersma, Paulus"]
[Result "1/2-1/2"]
[WhiteElo "2490"]
[BlackElo "2355"]
[ECO "A30"]
[EventDate "1983.07.15"]
[PlyCount "67"]

1.Nf3 Nf6 2.c4 b6 3.g3 Bb7 4.Bg2 c5 5.O-O g6 6.d4 cxd4 7.Qxd4 Bg7 8.Nc3 
Nc6 9.Qh4 h6 10.Nd5 e6 11.Nxf6+ Qxf6 12.Qxf6 Bxf6 13.Rb1 Ne7 14.Bf4 g5 15.
Be5 Bxe5 16.Nxe5 Bxg2 17.Kxg2 f6 18.Ng4 Kf7 19.Rbd1 d5 20.cxd5 Nxd5 21.e4 
h5 22.exd5 hxg4 23.dxe6+ Kxe6 24.Rfe1+ Kf5 25.Rd5+ Kg6 26.Re4 Rh3 27.Rxg4 
Rah8 28.Rc4 Rxh2+ 29.Kf3 R8h7 30.Rd8 Re7 31.Rf8 Kg7 32.Ra8 f5 33.g4 Rh4 
34.Rac8 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.15"]
[Round "1"]
[White "Van Wijgerden, Cornelis"]
[Black "Timman, Jan"]
[Result "0-1"]
[WhiteElo "2430"]
[BlackElo "2605"]
[ECO "C84"]
[EventDate "1983.07.15"]
[PlyCount "80"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d4 exd4 6.O-O Be7 7.Re1 b5 8.Bb3 d6
9.Bd5 Nxd5 10.exd5 Ne5 11.Nxd4 O-O 12.Nc3 Qd7 13.f4 Ng6 14.Nc6 Bf6 15.Ne4 
Qf5 16.Ng3 Qg4 17.Qxg4 Bxg4 18.Ne4 Rfe8 19.Nxf6+ gxf6 20.Bd2 Bd7 21.Kf2 
Bxc6 22.dxc6 Rxe1 23.Rxe1 f5 24.Kf3 f6 25.Ba5 Rc8 26.a4 Kf7 27.Bc3 Ne7 28.
axb5 axb5 29.Ra1 Nxc6 30.Ra6 Ne7 31.Ra7 Ke6 32.Rb7 c6 33.Ra7 c5 34.Bd2 b4 
35.Be3 h5 36.Bf2 Nd5 37.Ra1 Rb8 38.Ra6 b3 39.c3 Nb6 40.Ke2 Kd5 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.15"]
[Round "1"]
[White "Vogel, Jaap"]
[Black "Short, Nigel David"]
[Result "0-1"]
[WhiteElo "2325"]
[BlackElo "2475"]
[ECO "A07"]
[EventDate "1983.07.15"]
[PlyCount "82"]

1.Nf3 Nf6 2.g3 d5 3.Bg2 c6 4.b3 Bg4 5.Bb2 Nbd7 6.d3 e6 7.Nbd2 Bd6 8.e4 
dxe4 9.dxe4 Ne5 10.O-O Qc7 11.Qe2 O-O 12.Qe3 Bxf3 13.Bxf3 Rfd8 14.Rad1 
Nfd7 15.Bg2 a5 16.a3 b5 17.Qe2 Ng6 18.f4 Nb6 19.Kh1 Rac8 20.h4 Qe7 21.h5 
Nf8 22.h6 g6 23.Nf3 Bxa3 24.Bxa3 Qxa3 25.Rxd8 Rxd8 26.Qe3 Nfd7 27.g4 Qc5 
28.Qd2 Qb4 29.Qe3 a4 30.Ne5 Rc8 31.Rd1 Nxe5 32.fxe5 Na8 33.bxa4 bxa4 34.
Qa7 a3 35.Ra1 Qd2 36.Rxa3 Qxh6+ 37.Rh3 Qc1+ 38.Kh2 Qf4+ 39.Kg1 Qxe5 40.Rf3
Rf8 41.Rf2 Nc7 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.15"]
[Round "1"]
[White "Murey, Jacob"]
[Black "Van der Vliet, Fredrik"]
[Result "1/2-1/2"]
[WhiteElo "2485"]
[BlackElo "2345"]
[ECO "B96"]
[EventDate "1983.07.15"]
[PlyCount "60"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 b5 8.e5 dxe5 
9.fxe5 Qc7 10.exf6 Qe5+ 11.Qe2 Qxg5 12.g3 Ra7 13.Ne4 Qe5 14.c3 Bb7 15.fxg7
Bxg7 16.Bg2 O-O 17.O-O b4 18.Rae1 bxc3 19.bxc3 Bxe4 20.Bxe4 Qc5 21.Kh1 Nd7
22.Nc6 Rc7 23.Qxa6 Nf6 24.Bg2 Nd5 25.Nd4 Nxc3 26.Nb3 Qa7 27.Qd6 Rd7 28.Qc6
Rc7 29.Qd6 Rd7 30.Qc6 Rc7 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.15"]
[Round "1"]
[White "Van Baarle, John"]
[Black "Johansen, Darryl"]
[Result "1-0"]
[WhiteElo "2345"]
[BlackElo "2485"]
[ECO "B41"]
[EventDate "1983.07.15"]
[PlyCount "95"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 d6 5.c4 Nf6 6.Nc3 Be7 7.Be2 a6 8.Be3 Qc7
9.O-O O-O 10.Qd2 b6 11.Rfd1 Bb7 12.f3 Nbd7 13.Bf1 Rad8 14.Rac1 Rfe8 15.Kh1
Qb8 16.Qf2 Rc8 17.b3 Bf8 18.Rc2 Ne5 19.Qg1 Kh8 20.Bf2 Ba8 21.a4 Red8 22.
Nde2 Ned7 23.Rcd2 Be7 24.Nc1 Rg8 25.Bg3 Ne5 26.Qe3 g5 27.Nd3 Nh5 28.Bf2 
Nd7 29.Ne2 Bb7 30.Ng3 Nhf6 31.Qe2 Rg7 32.Bd4 e5 33.Bf2 Rg6 34.Nf5 Bf8 35.
Nb4 Nc5 36.Qe3 g4 37.Nd5 Nxd5 38.cxd5 a5 39.Bb5 Rd8 40.Bh4 gxf3 41.gxf3 
Rc8 42.Rg1 Ba6 43.Bxa6 Nxa6 44.Rdg2 Rc7 45.Bf6+ Kg8 46.h4 h5 47.Rg5 Qc8 
48.Rxh5 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.15"]
[Round "1"]
[White "De Roode, Peter"]
[Black "Van der Sterren, Paul"]
[Result "1/2-1/2"]
[WhiteElo "2250"]
[BlackElo "2445"]
[ECO "D37"]
[EventDate "1983.07.15"]
[PlyCount "50"]

1.c4 e6 2.Nc3 d5 3.d4 Nf6 4.Nf3 Be7 5.Bf4 O-O 6.e3 c5 7.dxc5 Bxc5 8.Qc2 
Nc6 9.Rd1 Qa5 10.a3 Be7 11.Rd2 Rd8 12.Be2 Ne4 13.Nxe4 dxe4 14.Qxe4 e5 15.
Bg3 f5 16.Qc2 e4 17.Nd4 Nxd4 18.exd4 Bg5 19.Be5 Be6 20.h4 Bh6 21.Rh3 Bxd2+
22.Qxd2 Qxd2+ 23.Kxd2 f4 24.Rb3 Rd7 25.g3 fxg3 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.15"]
[Round "1"]
[White "Hresc, Vladimir"]
[Black "Lengyel, Bela"]
[Result "1-0"]
[WhiteElo "2450"]
[BlackElo "2315"]
[ECO "C98"]
[EventDate "1983.07.15"]
[PlyCount "77"]

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.d5 Na5 14.Nf1 Nc4 15.Ng3 g6 
16.Nh2 Bd7 17.b3 Nb6 18.f4 c4 19.Qf3 cxb3 20.axb3 Rfc8 21.Bd2 exf4 22.Qxf4
a5 23.Rf1 a4 24.Nf3 axb3 25.Rxa8 Rxa8 26.Bxb3 Nc4 27.Bxc4 Qxc4 28.Be3 Rf8 
29.Bd4 Ne8 30.Ne5 dxe5 31.Qxe5 f6 32.Qxe7 Rf7 33.Qd8 b4 34.Rxf6 bxc3 35.
Bxc3 Bb5 36.Rxf7 Kxf7 37.Be5 h5 38.Qg5 Qd3 39.d6 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.15"]
[Round "1"]
[White "Berg, Klaus"]
[Black "Van der Wiel, John"]
[Result "0-1"]
[WhiteElo "2400"]
[BlackElo "2515"]
[ECO "A13"]
[EventDate "1983.07.15"]
[PlyCount "114"]

1.Nf3 c5 2.g3 Nc6 3.Bg2 d5 4.O-O e6 5.c4 dxc4 6.Na3 Nf6 7.Nxc4 Be7 8.b3 
Nd5 9.Bb2 Bf6 10.Bxf6 gxf6 11.Rc1 Nde7 12.e3 O-O 13.d4 cxd4 14.Nxd4 Nxd4 
15.exd4 Rb8 16.Qg4+ Ng6 17.Rfd1 Bd7 18.h4 b5 19.Ne3 f5 20.Qf3 Rc8 21.Rxc8 
Bxc8 22.h5 Ne7 23.d5 Nxd5 24.Nxd5 exd5 25.Rxd5 Qe8 26.Qf4 f6 27.Bf3 Qe1+ 
28.Kg2 b4 29.Rb5 Ba6 30.Qxb4 Re8 31.Qxe1 Rxe1 32.Rxf5 Bf1+ 33.Kh2 Ra1 34.
Bd5+ Kg7 35.b4 Bd3 36.Rf4 f5 37.Rd4 Be2 38.f3 Kh6 39.Rd2 Bd1 40.Be6 Bxf3 
41.g4 fxg4 42.Bd5 Rh1+ 43.Kg3 Kxh5 44.Bxf3 Rh3+ 45.Kg2 Rxf3 46.Rd7 h6 47.
Rxa7 Rf4 48.Kg3 Rf3+ 49.Kg2 Kh4 50.b5 Rg3+ 51.Kf2 Rc3 52.b6 g3+ 53.Ke2 
Rc2+ 54.Kd3 Rb2 55.Ra6 g2 56.Kc3 Rb1 57.b7 g1=Q 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.15"]
[Round "1"]
[White "Van Mil, Johannes"]
[Black "Chandler, Murray Graham"]
[Result "1/2-1/2"]
[WhiteElo "2340"]
[BlackElo "2485"]
[ECO "B93"]
[EventDate "1983.07.15"]
[PlyCount "109"]

1.e4 c5 2.Nf3 d6 3.d4 Nf6 4.Nc3 cxd4 5.Nxd4 a6 6.f4 e5 7.Nf3 Nbd7 8.a4 Be7
9.Bc4 O-O 10.O-O Qb6+ 11.Kh1 exf4 12.a5 Qc7 13.Bd5 Ne5 14.Bxf4 Be6 15.Bxe6
fxe6 16.Ng5 Qc4 17.Ra4 Qc8 18.Bxe5 dxe5 19.Qe2 h6 20.Rc4 Qd7 21.Rd1 Bd6 
22.Nf3 Qe7 23.Qe3 Ng4 24.Qb6 Rad8 25.Rd3 Kh7 26.h3 Nf6 27.Qe3 Nh5 28.Ne2 
Rd7 29.Qd2 Rfd8 30.Qc3 Qf6 31.Rc8 Qg6 32.Rxd8 Rxd8 33.Qc4 Rd7 34.g4 Nf6 
35.Qxe6 Qxe4 36.Ng3 Qf4 37.Qf5+ g6 38.Qxf4 exf4 39.g5 fxg3 40.gxf6 Rd8 41.
Rc3 Rd7 42.Rd3 Rd8 43.Ne5 Bc7 44.Rxd8 Bxd8 45.Nd7 Kg8 46.b4 Bc7 47.c4 Kf7 
48.c5 g5 49.c6 bxc6 50.Nc5 Bb8 51.Nxa6 Ba7 52.Nc7 Kxf6 53.b5 cxb5 54.Nxb5 
Bf2 55.Kg2 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.16"]
[Round "2"]
[White "Sax, Gyula"]
[Black "Hresc, Vladimir"]
[Result "1-0"]
[WhiteElo "2570"]
[BlackElo "2450"]
[ECO "C85"]
[EventDate "1983.07.15"]
[PlyCount "65"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Bxc6 dxc6 7.d3 Bd6 8.d4 
Nxe4 9.Qd3 f5 10.dxe5 Bc5 11.Be3 Be6 12.Nd4 Qd5 13.Nc3 Nxc3 14.Nxe6 Qxe6 
15.Bxc5 Ne4 16.Ba3 Qd7 17.Qe3 Qd2 18.Qh3 Qf4 19.Rad1 Nd2 20.g3 Nf3+ 21.Kg2
Qg4 22.Qxg4 fxg4 23.h3 h5 24.Rh1 Rh6 25.e6 b6 26.hxg4 hxg4 27.Rd7 Rxe6 28.
Rxc7 Rh6 29.Re7+ Kd8 30.Rd1+ Kc8 31.Re8+ Kc7 32.Rxa8 c5 33.Rg8 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.16"]
[Round "2"]
[White "Chandler, Murray Graham"]
[Black "De Roode, Peter"]
[Result "1-0"]
[WhiteElo "2485"]
[BlackElo "2250"]
[ECO "B85"]
[EventDate "1983.07.15"]
[PlyCount "83"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e6 7.O-O Be7 8.f4 O-O
9.Kh1 Nc6 10.Be3 Bd7 11.Bd3 b5 12.Qf3 Nxd4 13.Bxd4 Bc6 14.Qh3 g6 15.Rae1 
Qd7 16.Rf3 Rae8 17.Qh6 e5 18.fxe5 Ng4 19.e6 Nxh6 20.exd7 Bxd7 21.Nd5 Bd8 
22.Nf6+ Bxf6 23.Rxf6 Be6 24.h3 Rb8 25.g4 Rfe8 26.a4 Kf8 27.axb5 axb5 28.
Ra1 Ng8 29.Rf2 Ne7 30.Ra6 Red8 31.Bf6 b4 32.Kh2 Rd7 33.b3 Ng8 34.Bd4 Ke7 
35.Rf1 Rc7 36.e5 d5 37.Rfa1 Kf8 38.Ra8 Rb7 39.Bc5+ Kg7 40.Rxb8 Rxb8 41.Ra4
f6 42.Ra7+ 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.16"]
[Round "2"]
[White "Timman, Jan"]
[Black "Ree, Hans"]
[Result "1-0"]
[WhiteElo "2605"]
[BlackElo "2500"]
[ECO "B99"]
[EventDate "1983.07.15"]
[PlyCount "53"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 Qc7
9.O-O-O Nbd7 10.g4 b5 11.Bxf6 Nxf6 12.g5 Nd7 13.f5 Nc5 14.h4 b4 15.Nce2 e5
16.Nb3 Bb7 17.Ng3 Rc8 18.Rh2 d5 19.f6 gxf6 20.Nxc5 Qxc5 21.gxf6 Bf8 22.
exd5 Rd8 23.Re2 Rxd5 24.Rxd5 Qxd5 25.Qh5 Bd6 26.Nf5 e4 27.Rxe4+ 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.16"]
[Round "2"]
[White "Short, Nigel David"]
[Black "Hort, Vlastimil"]
[Result "1-0"]
[WhiteElo "2475"]
[BlackElo "2595"]
[ECO "A55"]
[EventDate "1983.07.15"]
[PlyCount "125"]

1.e4 c6 2.c4 e5 3.Nf3 d6 4.d4 Nd7 5.Nc3 Ngf6 6.Be2 Be7 7.O-O O-O 8.Qc2 a6 
9.Rd1 Qc7 10.h3 b5 11.a3 Bb7 12.Be3 Rac8 13.Rac1 Qb8 14.Qb1 exd4 15.Nxd4 
g6 16.Nb3 Rfe8 17.Na5 Ba8 18.b4 Bf8 19.Bf1 Re6 20.Bf4 Ne5 21.cxb5 axb5 22.
Re1 Rce8 23.Rcd1 Bg7 24.Nb3 Nh5 25.Bh2 Nf3+ 26.gxf3 Bxc3 27.Re3 Be5 28.
Bxe5 Rxe5 29.Red3 d5 30.Qc1 Qd8 31.Nc5 Qh4 32.f4 Nxf4 33.Rf3 g5 34.Nd7 
R5e6 35.Rg3 Rg6 36.e5 Re7 37.Nf6+ Kg7 38.Qc3 Bb7 39.Re1 Bc8 40.Qxc6 Bxh3 
41.Qa8 Rxe5 42.Rxe5 Rxf6 43.Re8 Bxf1 44.Rg8+ Kh6 45.Qf8+ Kh5 46.R8xg5+ 
Qxg5 47.Rxg5+ Kxg5 48.Kxf1 h5 49.Qg8+ Kf5 50.Qe8 h4 51.Qxb5 h3 52.Qd7+ Ke4
53.Qe7+ Re6 54.Qxf7 Rg6 55.Qe7+ Kf5 56.b5 Kg4 57.a4 Rg5 58.Kg1 Rg6 59.Kh2 
Kf5 60.Qc5 Rg2+ 61.Kh1 Kg4 62.Qe3 d4 63.Qxd4 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.16"]
[Round "2"]
[White "Van der Sterren, Paul"]
[Black "Van Mil, Johannes"]
[Result "1-0"]
[WhiteElo "2445"]
[BlackElo "2340"]
[ECO "D85"]
[EventDate "1983.07.15"]
[PlyCount "74"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.cxd5 Nxd5 6.e4 Nxc3 7.bxc3 O-O 8.Be2
c5 9.Rb1 Bg4 10.Rxb7 Nc6 11.O-O Bxf3 12.Bxf3 cxd4 13.Qa4 Qc8 14.Rb3 Be5 
15.c4 Qc7 16.g3 Rab8 17.Be2 Rfd8 18.Rd1 Bd6 19.Rb5 Bb4 20.Bf4 e5 21.Bxe5 
Nxe5 22.Qxb4 Rxb5 23.cxb5 d3 24.Bf1 Rd4 25.Qb3 Qd7 26.f4 Nf3+ 27.Kg2 Qg4 
28.Bxd3 Nh4+ 29.Kg1 Qf3 30.gxh4 Qg4+ 31.Kf2 Qxf4+ 32.Ke2 Rd6 33.Rf1 Qg4+ 
34.Kd2 Qg2+ 35.Kc1 Rd7 36.Qc4 Kg7 37.Qc3+ f6 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.16"]
[Round "2"]
[White "Van der Wiel, John"]
[Black "Van Baarle, John"]
[Result "1-0"]
[WhiteElo "2515"]
[BlackElo "2345"]
[ECO "C41"]
[EventDate "1983.07.15"]
[PlyCount "31"]

1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.dxe5 dxe5 6.Ng5 Nh6 7.O-O Be7 8.Ne6 
fxe6 9.Bxh6 Nb6 10.Qh5+ Kf8 11.f4 Bc5+ 12.Kh1 Kg8 13.f5 gxh6 14.fxe6 Qe7 
15.Rf7 Qg5 16.Rf8+ 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.16"]
[Round "2"]
[White "Bohm, Hans"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[WhiteElo "2390"]
[BlackElo "2430"]
[ECO "A87"]
[EventDate "1983.07.15"]
[PlyCount "109"]

1.d4 d6 2.g3 f5 3.Nf3 Nf6 4.b3 g6 5.Bb2 Bg7 6.Bg2 O-O 7.O-O c6 8.c4 Na6 9.
Nbd2 Nc7 10.Qc2 Rb8 11.Rac1 Bd7 12.Rfe1 a6 13.e4 fxe4 14.Nxe4 Bf5 15.Nh4 
Bxe4 16.Bxe4 Nxe4 17.Qxe4 Rf7 18.Rc2 Bf6 19.d5 cxd5 20.cxd5 Qd7 21.Bxf6 
exf6 22.Rec1 Re7 23.Qd3 Ne8 24.Ng2 Ng7 25.Ne3 Rbe8 26.Rc4 Nh5 27.g4 Ng7 
28.h3 Rf8 29.Qc3 f5 30.Rc8 Rf7 31.Rxf8+ Rxf8 32.Qc7 Qxc7 33.Rxc7 Rf7 34.
Rc8+ Rf8 35.Rc7 Rf7 36.Rc8+ Rf8 37.Rc4 Rf7 38.a4 fxg4 39.hxg4 h5 40.Kg2 
hxg4 41.Rxg4 Kh7 42.Rb4 Nh5 43.Rb6 Nf4+ 44.Kg3 Nh5+ 45.Kh4 Kg7 46.Ng4 Nf6 
47.Rxd6 Nxg4 48.Kxg4 Rxf2 49.Rb6 Rf7 50.Rb4 Kf8 51.Rb6 Kg7 52.a5 Kh6 53.
Re6 Rf5 54.Rd6 Kg7 55.b4 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.16"]
[Round "2"]
[White "Franco Ocampos, Zenon"]
[Black "Seirawan, Yasser"]
[Result "0-1"]
[WhiteElo "2495"]
[BlackElo "2605"]
[ECO "D48"]
[EventDate "1983.07.15"]
[PlyCount "60"]

1.Nf3 Nf6 2.c4 c5 3.Nc3 e6 4.e3 d5 5.d4 a6 6.a3 dxc4 7.Bxc4 b5 8.Bd3 Nbd7 
9.O-O Bb7 10.Bc2 Rc8 11.dxc5 Bxc5 12.e4 Qc7 13.Qe2 O-O 14.Bd2 Ng4 15.h3 
Nge5 16.Nxe5 Nxe5 17.Rad1 Bd4 18.Bb1 Nc4 19.Bc1 Qe5 20.Kh1 Nxb2 21.f4 Nxd1
22.fxe5 Nxc3 23.Qd3 Rc4 24.Re1 Bf2 25.Rf1 Nxb1 26.Qxb1 Bxe4 27.Qb3 Rc2 28.
Rd1 Bc5 29.Bd2 Rd8 30.Re1 Rd3 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.16"]
[Round "2"]
[White "Langeweg, Christian"]
[Black "Vogel, Jaap"]
[Result "1-0"]
[WhiteElo "2420"]
[BlackElo "2325"]
[ECO "E52"]
[EventDate "1983.07.15"]
[PlyCount "71"]

1.d4 e6 2.Nf3 Nf6 3.c4 b6 4.Nc3 Bb4 5.e3 O-O 6.Bd3 Bb7 7.O-O d5 8.cxd5 
exd5 9.a3 Bd6 10.b4 Nc6 11.Qb3 Re8 12.Bb2 Ne4 13.Qc2 Nf6 14.Rfe1 a5 15.b5 
Ne7 16.Ne5 c5 17.bxc6 Nxc6 18.f4 Na7 19.Rac1 Rb8 20.Rf1 Ba8 21.Rf3 b5 22.
Rh3 b4 23.Bxh7+ Kf8 24.axb4 axb4 25.Na4 Qa5 26.Nc5 b3 27.Qd1 Bxc5 28.dxc5 
Nc6 29.Bf5 Qa2 30.Qd2 Qa4 31.Qc3 Qb4 32.Rh8+ Ke7 33.Nxc6+ Bxc6 34.Qe5+ Kd8
35.Qd6+ Bd7 36.Bxf6+ 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.16"]
[Round "2"]
[White "Boersma, Paulus"]
[Black "Murey, Jacob"]
[Result "1-0"]
[WhiteElo "2355"]
[BlackElo "2485"]
[ECO "D33"]
[EventDate "1983.07.15"]
[PlyCount "77"]

1.Nf3 c5 2.c4 Nc6 3.Nc3 e6 4.g3 d5 5.cxd5 exd5 6.d4 Nf6 7.Bg2 Be6 8.O-O h6
9.b3 Qa5 10.Bb2 b5 11.Ne5 Qb6 12.e4 Nxe5 13.Nxd5 Bxd5 14.dxe5 Bxb3 15.axb3
Nh7 16.e6 Qxe6 17.e5 Rd8 18.Qf3 Be7 19.Qc6+ Qxc6 20.Bxc6+ Kf8 21.Bxb5 Ng5 
22.Rxa7 h5 23.f4 Ne4 24.Rd7 Rxd7 25.Bxd7 Rh6 26.Ra1 Bd8 27.Ra8 Ke7 28.Bb5 
Rb6 29.Ra7+ Kf8 30.Bc4 Nd2 31.Bxf7 Nxb3 32.Bxh5 Rb8 33.Rf7+ Kg8 34.e6 Nd4 
35.Bxd4 cxd4 36.e7 Bb6 37.Rf5 d3+ 38.Kf1 g6 39.Bxg6 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.16"]
[Round "2"]
[White "Lengyel, Bela"]
[Black "Berg, Klaus"]
[Result "1-0"]
[WhiteElo "2315"]
[BlackElo "2400"]
[ECO "B17"]
[EventDate "1983.07.15"]
[PlyCount "71"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Nf3 Ngf6 6.Ng3 c5 7.dxc5 e6 8.c6 
bxc6 9.Be2 Be7 10.O-O O-O 11.c4 Qb6 12.Qc2 c5 13.Rd1 Bb7 14.Ng5 Rfd8 15.
Be3 h6 16.Nf3 Ng4 17.Bf4 Nf8 18.Ne5 Nxe5 19.Bxe5 Ng6 20.Bc3 Nf4 21.Bf1 h5 
22.Bd2 e5 23.Bxf4 exf4 24.Nxh5 Qh6 25.Qb3 Bc6 26.Qh3 Kf8 27.Qg4 g5 28.h4 
Be4 29.hxg5 Bxg5 30.g3 f5 31.Qh3 Ke7 32.Rxd8 Rxd8 33.Re1 f3 34.Qxf5 Qxh5 
35.Rxe4+ Kd6 36.Rh4 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.16"]
[Round "2"]
[White "De Boer, Gert Jan"]
[Black "Henley, Ron"]
[Result "1/2-1/2"]
[WhiteElo "2330"]
[BlackElo "2525"]
[ECO "D88"]
[EventDate "1983.07.15"]
[PlyCount "133"]

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 cxd4 10.cxd4 Nc6 11.Be3 Na5 12.Bd3 b6 13.Rc1 e6 14.Qd2 Bb7 15.h4
Nc6 16.Bb5 Ne7 17.f3 Rc8 18.Bh6 a6 19.Ba4 b5 20.Bb3 Qd6 21.h5 Nc6 22.Bxg7 
Kxg7 23.Kf2 Qe7 24.Rh1 g5 25.h6+ Kh8 26.d5 Ne5 27.dxe6 Rcd8 28.Qc3 Qf6 29.
Rcd1 fxe6 30.Kg3 Rc8 31.Qd4 a5 32.a4 bxa4 33.Bxa4 Ba6 34.Rhe1 Nd3 35.Rxd3 
e5 36.Qd6 Bxd3 37.Qxd3 Qxh6 38.Kf2 g4 39.Qd5 Qb6+ 40.Kg3 gxf3 41.Qxe5+ Rf6
42.gxf3 Rg8+ 43.Kh3 Qe6+ 44.Qxe6 Rxe6 45.Ng3 Rh6+ 46.Kg2 Rhg6 47.Kf2 Rxg3 
48.e5 Rg2+ 49.Ke3 Rg1 50.Re2 R8g2 51.Rxg2 Rxg2 52.f4 h5 53.f5 Rg3+ 54.Kf2 
Rg5 55.Bd7 a4 56.f6 Rxe5 57.Bxa4 Kg8 58.Bb3+ Kh7 59.Kg2 Re2+ 60.Kf3 Rb2 
61.Bd5 Rb6 62.f7 Kg7 63.Kg3 Rd6 64.Bc4 Rd4 65.Be6 Re4 66.Bd5 Re5 67.Ba2 
1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.16"]
[Round "2"]
[White "Ligterink, Gert"]
[Black "Sunye Neto, Jaime"]
[Result "1/2-1/2"]
[WhiteElo "2430"]
[BlackElo "2490"]
[ECO "E11"]
[EventDate "1983.07.15"]
[PlyCount "78"]

1.d4 Nf6 2.Nf3 e6 3.c4 Bb4+ 4.Bd2 a5 5.g3 d5 6.Qc2 Nc6 7.Bg2 dxc4 8.Qxc4 
Qd5 9.Qxd5 exd5 10.Nc3 a4 11.O-O Bg4 12.Ne5 Nxe5 13.dxe5 Nd7 14.h3 Bxe2 
15.Rfe1 Bc4 16.b3 d4 17.Ne4 Bxd2 18.Nxd2 Ba6 19.e6 fxe6 20.Rxe6+ Kd8 21.
Rc1 c6 22.Rd6 d3 23.Nc4 Kc7 24.Rxd3 axb3 25.axb3 Bxc4 26.bxc4 Nc5 27.Re3 
Rhe8 28.Rce1 Rxe3 29.Rxe3 Kd6 30.h4 Ra1+ 31.Bf1 b5 32.cxb5 cxb5 33.Kg2 b4 
34.Bc4 Ra3 35.Re8 Rc3 36.Bg8 h6 37.Rb8 b3 38.Rb4 Rc2 39.Bxb3 Rxf2+ 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.16"]
[Round "2"]
[White "Johansen, Darryl"]
[Black "Borm, Franciscus"]
[Result "0-1"]
[WhiteElo "2485"]
[BlackElo "2355"]
[ECO "A06"]
[EventDate "1983.07.15"]
[PlyCount "83"]

1.Nf3 Nf6 2.b3 e6 3.Bb2 c5 4.g3 Nc6 5.Bg2 d5 6.O-O Bd6 7.c4 d4 8.e3 O-O 9.
exd4 cxd4 10.d3 e5 11.Na3 Re8 12.Nc2 a5 13.Bc1 h6 14.a3 Bc5 15.Bb2 Bf5 16.
Re1 Qb6 17.b4 axb4 18.axb4 Rxa1 19.Qxa1 Bxb4 20.Nxb4 Qxb4 21.Bf1 Qd6 22.
Nd2 Qc7 23.Qa3 b6 24.Bg2 Bc8 25.Bc1 Bb7 26.Ne4 Nxe4 27.Bxe4 Na5 28.f4 Bxe4
29.Rxe4 f5 30.Rxe5 Rxe5 31.fxe5 Qxe5 32.Kf2 Kh7 33.Qa4 Nb7 34.Bf4 Qe6 35.
Qa1 Qf6 36.Qa7 Nc5 37.Ke2 Qc6 38.Qf7 Qg2+ 39.Kd1 Qf1+ 40.Kc2 Qxd3+ 41.Kc1 
Nb3+ 42.Kb2 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.16"]
[Round "2"]
[White "Van der Vliet, Fredrik"]
[Black "Lobron, Eric"]
[Result "1/2-1/2"]
[WhiteElo "2345"]
[BlackElo "2480"]
[ECO "A75"]
[EventDate "1983.07.15"]
[PlyCount "87"]

1.d4 Nf6 2.c4 e6 3.Nc3 c5 4.d5 exd5 5.cxd5 d6 6.Nf3 g6 7.Bf4 a6 8.a4 Bg7 
9.e4 Bg4 10.Be2 O-O 11.O-O Re8 12.Nd2 Bxe2 13.Qxe2 Nh5 14.Be3 Nd7 15.a5 
Qh4 16.Nc4 Nf4 17.Qf3 Ne5 18.Nxe5 Bxe5 19.g3 Qh5 20.Qxh5 Nxh5 21.Na4 Bg7 
22.Nb6 Rad8 23.g4 Nf6 24.f3 Nd7 25.Nc4 Ne5 26.Ra4 Rd7 27.Nb6 Rc7 28.Kg2 f5
29.gxf5 gxf5 30.Bf4 Rf7 31.exf5 Rxf5 32.Bg3 Ref8 33.Ra3 Nf7 34.Rb3 Re8 35.
Re1 Rxe1 36.Bxe1 Ne5 37.Bg3 Nf7 38.Re3 Bxb2 39.Re8+ Kg7 40.Re7 Kf8 41.Rxb7
Bc3 42.Ra7 Bxa5 43.Nc4 Bb4 44.Nxd6 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.16"]
[Round "2"]
[White "Grooten, Herman"]
[Black "Kuijf, Marinus"]
[Result "1-0"]
[WhiteElo "2340"]
[BlackElo "2420"]
[ECO "E12"]
[EventDate "1983.07.15"]
[PlyCount "114"]

1.Nf3 Nf6 2.d4 e6 3.c4 b6 4.a3 Ba6 5.Qc2 Bb7 6.e3 c5 7.Be2 cxd4 8.exd4 Be7
9.O-O O-O 10.Bf4 d5 11.c5 bxc5 12.dxc5 a5 13.Nbd2 Nc6 14.Bb5 Rc8 15.Bxc6 
Bxc6 16.b4 Nd7 17.Rab1 axb4 18.axb4 Bb5 19.Rfe1 Bf6 20.Nb3 Re8 21.Nfd4 Ba4
22.Qa2 Ra8 23.Be3 g6 24.Na5 Bxd4 25.Bxd4 Bb5 26.Qb2 Qc7 27.c6 Nb6 28.Bh8 
f5 29.Be5 Qe7 30.Qd4 Nc8 31.Rbc1 Na7 32.h4 Ba6 33.Qf4 Nb5 34.c7 Na7 35.Bb2
h5 36.Qd4 Qh7 37.Qb6 Bc8 38.Nb7 Bd7 39.Nd8 Nc8 40.Qd4 Ra2 41.Ra1 Rxa1 42.
Bxa1 Nd6 43.Rc1 Bc8 44.Rc6 Nc4 45.Kh2 Qh6 46.f4 Na3 47.g3 Qh7 48.Qf6 Rf8 
49.Qe5 Nc4 50.Rxc4 dxc4 51.b5 Re8 52.b6 Re7 53.Bc3 g5 54.fxg5 f4 55.g6 
fxg3+ 56.Kh3 Qh6 57.Nc6 Re8 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.17"]
[Round "3"]
[White "Hort, Vlastimil"]
[Black "Van der Sterren, Paul"]
[Result "1/2-1/2"]
[WhiteElo "2595"]
[BlackElo "2445"]
[ECO "B07"]
[EventDate "1983.07.15"]
[PlyCount "150"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.g3 Bg7 5.Bg2 O-O 6.Nge2 e5 7.h3 c6 8.O-O b5 9.
a3 Bb7 10.Be3 Nbd7 11.Qd2 Re8 12.Rfe1 a5 13.Bg5 Qb8 14.dxe5 dxe5 15.Qe3 
Nf8 16.Qf3 N6d7 17.Rad1 Qc7 18.Qe3 Ne6 19.Bh6 Bh8 20.Nb1 Nd4 21.Qc1 Nc5 
22.Nd2 Nde6 23.Nf1 Rad8 24.Ne3 Bc8 25.Ng4 Rxd1 26.Rxd1 Rd8 27.Kh2 Rxd1 28.
Qxd1 Qd8 29.Qxd8+ Nxd8 30.Bg5 Nde6 31.Be7 Nd7 32.Nc1 h5 33.Ne3 Bf6 34.Bd6 
Bd8 35.h4 f6 36.Bh3 Kf7 37.f4 exf4 38.gxf4 Ng7 39.f5 gxf5 40.Nxf5 Nxf5 41.
Bxf5 Nb6 42.Nd3 Bxf5 43.exf5 Nc4 44.Bf4 Be7 45.Kg3 Nd6 46.Bxd6 Bxd6+ 47.
Kf3 Ke7 48.c3 a4 49.Nf2 Be5 50.Ne4 Kd7 51.Ke3 Kc7 52.Kd3 Kb6 53.Kc2 c5 54.
Kd3 Kc6 55.Ke3 Kd5 56.Kd3 Kc6 57.Ke3 Kd5 58.Kd3 b4 59.c4+ Kc6 60.Kc2 b3+ 
61.Kc1 Bd4 62.Kb1 Kd7 63.Kc1 Ke7 64.Kb1 Kf8 65.Kc1 Kf7 66.Kb1 Be3 67.Ka1 
Ke7 68.Kb1 Bf4 69.Ka1 Bc7 70.Kb1 Ba5 71.Kc1 Be1 72.Kd1 Bxh4 73.Ke2 Bg5 74.
Nxc5 Kd6 75.Nd3 Kc6 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.17"]
[Round "3"]
[White "Short, Nigel David"]
[Black "Sax, Gyula"]
[Result "0-1"]
[WhiteElo "2475"]
[BlackElo "2570"]
[ECO "B42"]
[EventDate "1983.07.15"]
[PlyCount "82"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 Nf6 6.O-O Qc7 7.b3 d6 8.Bb2 
Nbd7 9.c4 g6 10.Nc3 Bg7 11.Qe2 O-O 12.Rad1 b6 13.Bb1 Bb7 14.Kh1 Rfe8 15.f4
e5 16.fxe5 Nxe5 17.Rde1 b5 18.cxb5 d5 19.Rxf6 Bxf6 20.bxa6 Bxa6 21.Nxd5 
Qd6 22.Nb5 Bxb5 23.Nxf6+ Qxf6 24.Qxb5 Qf2 25.Bc3 Ng4 26.Qg5 Rac8 27.Bb4 
Qd4 28.Qxg4 Qxb4 29.Rf1 Qd2 30.Qf3 Re7 31.h4 Rc3 32.Qf6 Rd7 33.Kh2 Rc1 34.
Bd3 Rxf1 35.Bxf1 Qe1 36.Qf4 Re7 37.Bd3 h5 38.Qg5 Rd7 39.Bb5 Rd1 40.Qf4 
Qg1+ 41.Kh3 Re1 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.17"]
[Round "3"]
[White "Kuijf, Marinus"]
[Black "Vogel, Jaap"]
[Result "1-0"]
[WhiteElo "2420"]
[BlackElo "2325"]
[ECO "E12"]
[EventDate "1983.07.15"]
[PlyCount "119"]

1.d4 e6 2.Nf3 Nf6 3.Bf4 b6 4.e3 Bb7 5.c4 Bb4+ 6.Nfd2 Be7 7.Be2 d5 8.O-O 
O-O 9.Bf3 Nbd7 10.Nc3 c5 11.Rc1 Rc8 12.cxd5 Nxd5 13.Nxd5 exd5 14.Qb3 Nf6 
15.dxc5 Bxc5 16.Rfd1 Qe7 17.Nb1 Rfd8 18.Bg5 d4 19.Bxf6 gxf6 20.exd4 Bxd4 
21.Bxb7 Qxb7 22.Nc3 Bxc3 23.Rxd8+ Rxd8 24.Qxc3 Qd5 25.h3 Qe5 26.Qb4 Re8 
27.b3 Kh8 28.Qc4 Rg8 29.Rd1 Qg5 30.Qd5 Qxd5 31.Rxd5 Rc8 32.Rd7 a5 33.Rxf7 
Rc1+ 34.Kh2 Rc2 35.a4 Rb2 36.Rxf6 Rxb3 37.Rf7 Rb4 38.Rb7 Rxa4 39.Rxb6 Ra2 
40.Kg3 a4 41.Rb7 Rc2 42.Ra7 Rc3+ 43.Kg4 a3 44.f4 Rc2 45.g3 a2 46.Kg5 Rc3 
47.Kh4 Rc2 48.g4 Kg8 49.Kg5 Rb2 50.h4 Kf8 51.f5 Rc2 52.Kh6 Rc4 53.Kh5 Rc2 
54.g5 Rf2 55.Kh6 Rxf5 56.Rxa2 Rf4 57.h5 Rh4 58.Ra8+ Kf7 59.Ra7+ Kg8 60.
Rg7+ 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.17"]
[Round "3"]
[White "Henley, Ron"]
[Black "Boersma, Paulus"]
[Result "1-0"]
[WhiteElo "2525"]
[BlackElo "2355"]
[ECO "D03"]
[EventDate "1983.07.15"]
[PlyCount "66"]

1.d4 Nf6 2.Nf3 g6 3.Bg5 Bg7 4.Nbd2 d5 5.c3 c6 6.e3 Bf5 7.Qb3 Qb6 8.c4 Nbd7
9.Rc1 Qxb3 10.Nxb3 dxc4 11.Bxc4 Nb6 12.Be2 Na4 13.Na5 Nxb2 14.Nxb7 Nd5 15.
Nc5 f6 16.Bh4 Bh6 17.h3 Rb8 18.g4 Bc8 19.Kd2 e5 20.Kc2 exd4 21.Nxd4 Nxe3+ 
22.fxe3 Bxe3 23.Ndb3 Bxc1 24.Rxc1 h5 25.Bxf6 O-O 26.g5 Re8 27.Bf1 Rb4 28.
Kxb2 Rf4 29.Bc4+ Kh7 30.Rc3 Bxh3 31.Rxh3 Rxc4 32.Rd3 Re2+ 33.Ka3 h4 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.17"]
[Round "3"]
[White "Van der Wiel, John"]
[Black "Timman, Jan"]
[Result "1/2-1/2"]
[WhiteElo "2515"]
[BlackElo "2605"]
[ECO "C91"]
[EventDate "1983.07.15"]
[PlyCount "84"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.d4 d6 
9.c3 Bg4 10.Be3 exd4 11.cxd4 d5 12.e5 Ne4 13.h3 Bh5 14.g4 Bg6 15.Nh2 Bb4 
16.f3 Qh4 17.Re2 Ne7 18.Qc1 Qxh3 19.Bf4 h5 20.fxe4 Bxe4 21.Nd2 Qd3 22.Nxe4
Qxe2 23.Ng3 Qd3 24.Be3 h4 25.Nh5 Ng6 26.Bxd5 Rad8 27.Bg2 Rxd4 28.Bxd4 
Qxd4+ 29.Kh1 Nxe5 30.Qg5 Ng6 31.Rf1 Qe5 32.Rf5 Qe1+ 33.Nf1 Be7 34.Qe3 Qxe3
35.Nxe3 Bd6 36.g5 Re8 37.Nf1 Re5 38.Rxe5 Bxe5 39.b3 Bb2 40.Nd2 Ne5 41.Ne4 
Nd3 42.Bf1 Nc1 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.17"]
[Round "3"]
[White "Ree, Hans"]
[Black "De Boer, Gert Jan"]
[Result "1-0"]
[WhiteElo "2500"]
[BlackElo "2330"]
[ECO "D97"]
[EventDate "1983.07.15"]
[PlyCount "79"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 O-O 7.e4 Na6 8.Be2 
c5 9.d5 e6 10.O-O exd5 11.exd5 Bf5 12.Be3 Re8 13.Rad1 Ne4 14.Nxe4 Rxe4 15.
Qc1 Nb4 16.a3 Nc2 17.Bg5 f6 18.Qxc2 fxg5 19.Bd3 Rf4 20.Qxc5 g4 21.Qe3 Qd6 
22.Bxf5 Rxf5 23.Nd4 Re5 24.Qg3 Rd8 25.Ne6 Rd7 26.Qxg4 Rh5 27.h3 Bxb2 28.
Nc5 Rf7 29.Nxb7 Qc7 30.d6 Qxb7 31.d7 Bf6 32.d8=Q+ Bxd8 33.Rxd8+ Rf8 34.Rd7
Qb6 35.Qc4+ Kh8 36.Qc3+ Qf6 37.Qxf6+ Rxf6 38.Rc1 Rf8 39.Rxa7 Rhf5 40.Rcc7 
1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.17"]
[Round "3"]
[White "Seirawan, Yasser"]
[Black "Chandler, Murray Graham"]
[Result "1/2-1/2"]
[WhiteElo "2605"]
[BlackElo "2485"]
[ECO "D34"]
[EventDate "1983.07.15"]
[PlyCount "135"]

1.c4 e6 2.Nc3 d5 3.d4 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O 
O-O 9.Bg5 cxd4 10.Nxd4 h6 11.Bxf6 Bxf6 12.Nb3 Be6 13.Rc1 Rc8 14.Nc5 Qe7 
15.Nd3 Rfd8 16.Nf4 Bxc3 17.Nxe6 Qxe6 18.Rxc3 d4 19.Ra3 a6 20.Ra4 Rc7 21.
Qd2 Re7 22.Bf3 Qd7 23.b3 Na7 24.Rc4 Nc6 25.Bxc6 bxc6 26.Rd1 Qg4 27.e3 c5 
28.Rxc5 Red7 29.Re1 d3 30.Rc4 Qf3 31.e4 h5 32.h4 Qf6 33.Kg2 Qe5 34.Rd1 g6 
35.Qc3 Qe6 36.Rd2 Rd6 37.f3 Qe7 38.b4 Kh7 39.a3 Qe6 40.Rc7 Rd4 41.Rc6 R4d6
42.Rc5 Qe7 43.Rc7 R8d7 44.Rc8 Rd8 45.Rxd8 Qxd8 46.Kf2 Qd7 47.Ke3 Qh3 48.
Rxd3 Qxg3 49.Rxd6 Qxd6 50.a4 Qh2 51.Qf6 Qg1+ 52.Ke2 Qg2+ 53.Ke3 Qg1+ 54.
Kd2 Qf2+ 55.Kc3 Kg8 56.Kb3 Qe2 57.Qc3 Qd1+ 58.Ka3 Qd8 59.a5 Qxh4 60.Qc8+ 
Kg7 61.Qxa6 Qf2 62.Qd3 h4 63.Qc3+ Kh7 64.Qf6 h3 65.Qxf7+ Kh6 66.Qf4+ Kh7 
67.Qc7+ Kh6 68.Qf4+ 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.17"]
[Round "3"]
[White "Lobron, Eric"]
[Black "Van Baarle, John"]
[Result "1-0"]
[WhiteElo "2480"]
[BlackElo "2345"]
[ECO "B10"]
[EventDate "1983.07.15"]
[PlyCount "116"]

1.e4 c6 2.d3 d5 3.Nd2 Nf6 4.e5 Nfd7 5.d4 c5 6.f4 Nc6 7.Ndf3 cxd4 8.Ne2 Nc5
9.Nexd4 Bg4 10.Bb5 Rc8 11.h3 Bxf3 12.Qxf3 e6 13.O-O g6 14.Be3 a6 15.Bxc6+ 
bxc6 16.Qe2 Qd7 17.Nb3 Ne4 18.Qxa6 Be7 19.Nd2 Ng3 20.Rf3 Nf5 21.Bf2 h5 22.
Rb3 O-O 23.g4 hxg4 24.hxg4 Nh6 25.g5 Nf5 26.Kg2 Kg7 27.Rh1 Rh8 28.Rbh3 
Rxh3 29.Rxh3 c5 30.Qf1 Rh8 31.Rxh8 Kxh8 32.Qa6 Qd8 33.Nf3 Qb8 34.b3 Qb4 
35.c4 Kg7 36.Be1 Qb8 37.cxd5 exd5 38.Qe2 Qb7 39.e6 d4 40.Qe5+ Kg8 41.Bf2 
d3 42.exf7+ Kxf7 43.Qc3 Qe4 44.Qc4+ Qxc4 45.Ne5+ Ke6 46.Nxc4 Kd5 47.Kf3 
Bd8 48.a4 Nd6 49.Nxd6 Kxd6 50.Ke3 c4 51.bxc4 Bb6+ 52.Kf3 d2 53.c5+ Kd5 54.
Ke2 Ba5 55.Be3 Bb4 56.Kd1 Ke4 57.c6 Ba5 58.Bxd2 Bc7 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.17"]
[Round "3"]
[White "Langeweg, Christian"]
[Black "Franco Ocampos, Zenon"]
[Result "1/2-1/2"]
[WhiteElo "2420"]
[BlackElo "2495"]
[ECO "A61"]
[EventDate "1983.07.15"]
[PlyCount "81"]

1.d4 Nf6 2.Nf3 e6 3.c4 c5 4.d5 exd5 5.cxd5 g6 6.Nc3 d6 7.Bg5 Bg7 8.e3 h6 
9.Bh4 g5 10.Bg3 Nh5 11.Bd3 Qe7 12.Qc2 Nxg3 13.hxg3 Nd7 14.Bf5 a6 15.a4 Ne5
16.a5 O-O 17.Na4 Bxf5 18.Qxf5 Rfe8 19.Nxe5 Qxe5 20.Qxe5 Rxe5 21.Nb6 Rae8 
22.O-O-O Re4 23.b3 Rb4 24.Rd3 f5 25.Nc4 Rd8 26.Kc2 b5 27.axb6 a5 28.Rb1 a4
29.Na3 Rxb6 30.bxa4 Ra6 31.Rdb3 Rxa4 32.Rb8 Rf8 33.Rxf8+ Bxf8 34.Kb3 Rg4 
35.Nc4 f4 36.gxf4 gxf4 37.Rg1 fxe3 38.Nxe3 Rb4+ 39.Kc2 Bg7 40.Rb1 Ra4 41.
Rb6 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.17"]
[Round "3"]
[White "Sunye Neto, Jaime"]
[Black "Borm, Franciscus"]
[Result "1-0"]
[WhiteElo "2490"]
[BlackElo "2355"]
[ECO "A14"]
[EventDate "1983.07.15"]
[PlyCount "85"]

1.c4 e6 2.Nf3 Nf6 3.g3 d5 4.Bg2 c6 5.b3 Nbd7 6.Bb2 b5 7.O-O Be7 8.d3 O-O 
9.Nbd2 bxc4 10.dxc4 Bb7 11.Qc2 Qb8 12.e4 dxe4 13.Nxe4 Nxe4 14.Qxe4 c5 15.
Qc2 Bf6 16.Rad1 Rd8 17.Rd2 Bxb2 18.Qxb2 Nf6 19.Rfd1 Rxd2 20.Qxd2 h6 21.Qa5
Qc8 22.Ne5 Bxg2 23.Kxg2 Qb7+ 24.f3 Qb6 25.Qxb6 axb6 26.a4 g5 27.Kf2 Kg7 
28.g4 Ra7 29.Rd8 Rb7 30.Ke3 Kh7 31.Kd2 Kg7 32.Kc3 Kh7 33.b4 cxb4+ 34.Kxb4 
Kg7 35.Rd6 Ne8 36.Rd7 Rxd7 37.Nxd7 h5 38.gxh5 f5 39.c5 bxc5+ 40.Kxc5 f4 
41.Ne5 Nc7 42.Kd6 Na6 43.Ng4 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.17"]
[Round "3"]
[White "Van Wijgerden, Cornelis"]
[Black "Van Mil, Johannes"]
[Result "0-1"]
[WhiteElo "2430"]
[BlackElo "2340"]
[ECO "D05"]
[EventDate "1983.07.15"]
[PlyCount "78"]

1.e4 c5 2.c3 d6 3.d4 Nf6 4.dxc5 Nc6 5.Bd3 d5 6.Nd2 e5 7.Ngf3 Bxc5 8.O-O 
O-O 9.Qe2 Be6 10.b4 Bb6 11.b5 Ne7 12.c4 Ng6 13.exd5 Nf4 14.Qd1 Nxd3 15.
dxe6 Nxf2 16.Qe2 N6g4 17.g3 e4 18.Ne1 Qf6 19.Nb3 fxe6 20.Kg2 e3 21.Nd3 Qh6
22.h4 Qg6 23.Nxf2 Nxf2 24.Ba3 Qe4+ 25.Kh2 Qf5 26.Rxf2 Qxf2+ 27.Qxf2 Rxf2+ 
28.Kh3 Rd8 29.Re1 e2 30.c5 Rd1 31.cxb6 axb6 32.Bb4 Rxe1 33.Bxe1 Rf1 34.Kg2
Rxe1 35.Kf2 Rb1 36.Kxe2 Rb2+ 37.Kf3 Rxa2 38.Nd4 Kf7 39.Ke4 Kf6 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.17"]
[Round "3"]
[White "Murey, Jacob"]
[Black "Lengyel, Bela"]
[Result "1/2-1/2"]
[WhiteElo "2485"]
[BlackElo "2315"]
[ECO "A20"]
[EventDate "1983.07.15"]
[PlyCount "108"]

1.c4 e5 2.Nf3 e4 3.Nd4 Nc6 4.Nxc6 dxc6 5.Nc3 Bf5 6.Qb3 Bc5 7.e3 Rb8 8.Qc2 
Nf6 9.h3 h5 10.b3 Qd7 11.Bb2 Rd8 12.O-O-O h4 13.Ne2 Qe7 14.Kb1 Rh6 15.g4 
hxg3 16.Nxg3 Bh7 17.Rg1 Kf8 18.Ne2 Bd6 19.Nc1 c5 20.d4 cxd4 21.Rxd4 c5 22.
Rd5 Rg6 23.Rxg6 Bxg6 24.Rd2 Bc7 25.Ne2 Rxd2 26.Qxd2 Qd7 27.Kc1 Qf5 28.Nc3 
Qf3 29.Nb5 Bh2 30.Ba3 Kg8 31.Bxc5 b6 32.Bd6 Bg1 33.Nd4 Qxf2 34.Qxf2 Bxf2 
35.Kd2 Nd7 36.b4 f5 37.Nc6 Kf7 38.Nxa7 Ke6 39.Nc8 Be8 40.Bf4 Bh5 41.a4 Kf6
42.Bc7 Ne5 43.Bxe5+ Kxe5 44.Nxb6 g5 45.Nd5 f4 46.Bg2 Bf7 47.Ke2 Bg1 48.Kf1
Bh2 49.h4 gxh4 50.exf4+ Kd4 51.a5 Kxc4 52.Bxe4 Bxd5 53.Bxd5+ Kxd5 54.f5 
Be5 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.17"]
[Round "3"]
[White "De Roode, Peter"]
[Black "Bohm, Hans"]
[Result "0-1"]
[WhiteElo "2250"]
[BlackElo "2390"]
[ECO "D41"]
[EventDate "1983.07.15"]
[PlyCount "51"]

1.c4 c5 2.Nf3 Nf6 3.Nc3 d5 4.cxd5 Nxd5 5.e3 e6 6.d4 Nc6 7.Bc4 Nb6 8.Bb3 
Be7 9.O-O O-O 10.a3 Bd7 11.Bc2 Rc8 12.Qd3 g6 13.dxc5 Bxc5 14.e4 e5 15.Bg5 
f6 16.Bh6 Re8 17.b4 Bd4 18.Bb3+ Be6 19.Bxe6+ Rxe6 20.Rfd1 Rd6 21.Nxd4 Nxd4
22.Kf1 Nf5 23.Nd5 Nxd5 24.exf5 Ne3+ 25.Qxe3 Rxd1+ 26.Ke2 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.17"]
[Round "3"]
[White "Hresc, Vladimir"]
[Black "Van der Vliet, Fredrik"]
[Result "0-1"]
[WhiteElo "2450"]
[BlackElo "2345"]
[ECO "B22"]
[EventDate "1983.07.15"]
[PlyCount "110"]

1.e4 c5 2.c3 Nf6 3.e5 Nd5 4.d4 cxd4 5.cxd4 d6 6.Nf3 Nc6 7.Nc3 dxe5 8.dxe5 
Nxc3 9.Qxd8+ Nxd8 10.bxc3 g6 11.Nd4 Bg7 12.f4 Bd7 13.g3 Rc8 14.Be3 f6 15.
exf6 Bxf6 16.Kd2 Nf7 17.Bg2 Nd6 18.Rhe1 Kf7 19.Bf2 Rc5 20.Ne2 Ra5 21.Bd4 
Rc8 22.Bxf6 exf6 23.Nd4 b6 24.Kd3 Rc7 25.Reb1 Bc8 26.Rb3 Ba6+ 27.Kc2 Bc4 
28.Rb2 Bd5 29.Bxd5+ Rxd5 30.Kd3 Nb7 31.Rb5 Nc5+ 32.Ke3 Rd8 33.Rc1 Re8+ 34.
Kd2 Ne4+ 35.Kd3 Nf2+ 36.Kd2 Ne4+ 37.Kd3 Nc5+ 38.Kd2 Rce7 39.Rf1 Re3 40.Kc2
h5 41.f5 g5 42.Rb4 R8e4 43.Rg1 h4 44.Rg2 Nd3 45.Rd2 Nxb4+ 46.cxb4 hxg3 47.
hxg3 Rxg3 48.b5 Rge3 49.Nc6 Re2 50.Nxa7 Rxd2+ 51.Kxd2 Ra4 52.Nc8 Rxa2+ 53.
Ke3 Rb2 54.Ke4 Rb4+ 55.Ke3 Kg7 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.17"]
[Round "3"]
[White "Berg, Klaus"]
[Black "Johansen, Darryl"]
[Result "1/2-1/2"]
[WhiteElo "2400"]
[BlackElo "2485"]
[ECO "D22"]
[EventDate "1983.07.15"]
[PlyCount "23"]

1.Nf3 d5 2.d4 Nf6 3.c4 dxc4 4.e3 Bg4 5.Bxc4 e6 6.h3 Bh5 7.Nc3 a6 8.O-O Nc6
9.Be2 Bd6 10.b3 Bg6 11.Bb2 Nd5 12.a3 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.17"]
[Round "3"]
[White "Grooten, Herman"]
[Black "Ligterink, Gert"]
[Result "0-1"]
[WhiteElo "2340"]
[BlackElo "2430"]
[ECO "E92"]
[EventDate "1983.07.15"]
[PlyCount "62"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Nf3 e5 7.Be3 Nc6 8.d5 Ne7 
9.Nd2 Ne8 10.c5 c6 11.Nc4 cxd5 12.Nxd5 Nc6 13.cxd6 b5 14.Bc5 bxc4 15.Qa4 
Bd7 16.Bxc4 Nf6 17.Bb5 Nxd5 18.exd5 Nb8 19.O-O Bxb5 20.Qxb5 Nd7 21.b4 Re8 
22.Rac1 e4 23.Be3 Ne5 24.Qa6 Bf8 25.Bc5 Qd7 26.Rfd1 Red8 27.Qe2 Qf5 28.Rd4
Nf3+ 29.gxf3 Qg5+ 30.Kh1 Qxc1+ 31.Rd1 exf3 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.19"]
[Round "4"]
[White "Sax, Gyula"]
[Black "Van der Wiel, John"]
[Result "1/2-1/2"]
[WhiteElo "2570"]
[BlackElo "2515"]
[ECO "B21"]
[EventDate "1983.07.15"]
[PlyCount "46"]

1.e4 c5 2.f4 e6 3.Nf3 d5 4.exd5 exd5 5.Bb5+ Bd7 6.Bxd7+ Nxd7 7.O-O Bd6 8.
d4 Ne7 9.Nc3 O-O 10.Kh1 Nf6 11.Be3 Rc8 12.Bg1 c4 13.Ne5 Bb4 14.Ne2 Ne4 15.
f5 f6 16.Ng4 Qd7 17.c3 Bd6 18.Ne3 g6 19.Qc2 gxf5 20.g3 Kh8 21.Ng2 f4 22.
Nexf4 Bxf4 23.Nxf4 Rce8 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.19"]
[Round "4"]
[White "Chandler, Murray Graham"]
[Black "Sunye Neto, Jaime"]
[Result "1-0"]
[WhiteElo "2485"]
[BlackElo "2490"]
[ECO "B92"]
[EventDate "1983.07.15"]
[PlyCount "77"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nb3 Be7 8.O-O 
O-O 9.Be3 Be6 10.f4 exf4 11.Rxf4 Nc6 12.Nd5 Ne5 13.Bb6 Qd7 14.Qd4 Nxd5 15.
exd5 Bf5 16.c4 Rfe8 17.Raf1 Bg6 18.h4 h6 19.Na5 f5 20.b4 h5 21.c5 Bf6 22.
Qd1 dxc5 23.bxc5 Rac8 24.d6 Ng4 25.Bxg4 fxg4 26.Qd5+ Bf7 27.Qxb7 Qxb7 28.
Nxb7 Bd5 29.d7 Bxb7 30.dxc8=Q Rxc8 31.Rxf6 gxf6 32.Rxf6 Kg7 33.Rf5 Re8 34.
Rxh5 Re4 35.Rg5+ Kf6 36.Bd8+ Kf7 37.h5 Rd4 38.Ba5 Ra4 39.h6 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.19"]
[Round "4"]
[White "Timman, Jan"]
[Black "Henley, Ron"]
[Result "1-0"]
[WhiteElo "2605"]
[BlackElo "2525"]
[ECO "D77"]
[EventDate "1983.07.15"]
[PlyCount "77"]

1.Nf3 Nf6 2.d4 g6 3.c4 Bg7 4.g3 O-O 5.Bg2 d5 6.O-O dxc4 7.Na3 Na6 8.Nxc4 
c5 9.dxc5 Be6 10.Nce5 Nxc5 11.Be3 Qa5 12.Bd4 Bd5 13.e3 Nfe4 14.Bxc5 Qxc5 
15.Nd7 Qb5 16.Nxf8 Rxf8 17.Ng5 f5 18.a4 Qc6 19.Rc1 Qd6 20.Nxe4 fxe4 21.Qd2
Qe5 22.b4 e6 23.Rc2 h5 24.Rfc1 Rf7 25.Rc8+ Bf8 26.Qd4 Qf5 27.R1c2 b6 28.
R8c7 Bg7 29.Rxf7 Qxf7 30.Qd2 Kh7 31.Rc1 Qe7 32.Qc2 Qb7 33.Qc8 Qe7 34.Qc2 
Qb7 35.Qc7 Qa6 36.Qd7 Qe2 37.Rc7 Qb2 38.Rxa7 Bc4 39.h4 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.19"]
[Round "4"]
[White "Van der Sterren, Paul"]
[Black "Seirawan, Yasser"]
[Result "0-1"]
[WhiteElo "2445"]
[BlackElo "2605"]
[ECO "D52"]
[EventDate "1983.07.15"]
[PlyCount "112"]

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 Qa5 7.Nd2 dxc4 8.Bxf6 
Nxf6 9.Nxc4 Qc7 10.Be2 Bd7 11.O-O c5 12.Rc1 cxd4 13.exd4 Bd6 14.Nxd6+ Qxd6
15.Nb5 Bxb5 16.Bxb5+ Ke7 17.Qb3 Rac8 18.Be2 b6 19.Bf3 Rhd8 20.Qa4 Rc7 21.
Rxc7+ Qxc7 22.Qa3+ Ke8 23.Rd1 Qe7 24.Qa4+ Kf8 25.Rc1 g6 26.g3 Kg7 27.Kg2 
h5 28.h4 Ne8 29.Rc6 Qd7 30.Qa3 Kh7 31.Rc1 Nf6 32.Kg1 Kg7 33.Rc3 Ng8 34.Bc6
Qe7 35.Qa4 Nh6 36.Be4 Qd7 37.Qa3 Ng4 38.Rc4 e5 39.d5 Nf6 40.Bf3 Qf5 41.d6 
Qe6 42.Rc7 Rxd6 43.Rxa7 Rd2 44.Ra8 Qd6 45.Qxd6 Rxd6 46.b4 e4 47.Be2 Rd2 
48.Kf1 Nd5 49.a3 Nc3 50.Bc4 b5 51.Bxb5 Nxb5 52.a4 Rd1+ 53.Kg2 Ra1 54.a5 
Nd4 55.a6 Ra4 56.Rd8 Ne6 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.19"]
[Round "4"]
[White "Borm, Franciscus"]
[Black "Grooten, Herman"]
[Result "1-0"]
[WhiteElo "2355"]
[BlackElo "2340"]
[ECO "D41"]
[EventDate "1983.07.15"]
[PlyCount "61"]

1.Nf3 Nf6 2.c4 e6 3.Nc3 c5 4.e3 Be7 5.d4 cxd4 6.exd4 d5 7.cxd5 Nxd5 8.Bd3 
O-O 9.O-O b6 10.Nxd5 Qxd5 11.Qc2 Bb7 12.Bxh7+ Kh8 13.Bd3 Nc6 14.Be4 Qd6 
15.Qd1 f5 16.Bc2 Rad8 17.Bb3 Rf6 18.Ng5 Kg8 19.Bf4 Qxf4 20.Qh5 Rh6 21.Nxe6
Qe4 22.Nxd8+ Kh7 23.Qe8 Bxd8 24.Bg8+ Kh8 25.Be6+ Kh7 26.Qg8+ Kg6 27.Qf7+ 
Kh7 28.Bxf5+ Qxf5 29.Qxf5+ Rg6 30.Qd7 Ba8 31.d5 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.19"]
[Round "4"]
[White "Bohm, Hans"]
[Black "Hort, Vlastimil"]
[Result "1/2-1/2"]
[WhiteElo "2390"]
[BlackElo "2595"]
[ECO "A31"]
[EventDate "1983.07.15"]
[PlyCount "85"]

1.d4 Nf6 2.c4 c5 3.Nf3 cxd4 4.Nxd4 b6 5.Nc3 Bb7 6.Bg5 e6 7.f3 h6 8.Bh4 Be7
9.e3 Nc6 10.Rc1 O-O 11.Be2 Nxd4 12.Qxd4 Bc5 13.Qd2 Qe7 14.a3 Rfd8 15.b4 
Bd6 16.O-O Qf8 17.e4 Be7 18.Rfd1 Ne8 19.Bf2 Bg5 20.f4 Be7 21.Qd3 Bc6 22.
Bf3 Rdc8 23.Rc2 Rab8 24.Nb5 Rb7 25.e5 a6 26.Nd4 Bxf3 27.Qxf3 Rbb8 28.f5 a5
29.Nb5 axb4 30.axb4 Bxb4 31.Rxd7 exf5 32.Qxf5 Rd8 33.Ra2 g6 34.Qd3 Rxd7 
35.Qxd7 Ng7 36.h3 Ne6 37.Ra7 Rd8 38.Qb7 Bc5 39.Nd6 Bxd6 40.exd6 Rxd6 41.
Ra8 Rd8 42.Rxd8 Qxd8 43.Qxb6 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.19"]
[Round "4"]
[White "Franco Ocampos, Zenon"]
[Black "Short, Nigel David"]
[Result "0-1"]
[WhiteElo "2495"]
[BlackElo "2475"]
[ECO "D42"]
[EventDate "1983.07.15"]
[PlyCount "140"]

1.d4 e6 2.Nf3 Nf6 3.c4 c5 4.e3 d5 5.Nc3 Nc6 6.cxd5 Nxd5 7.Bd3 cxd4 8.exd4 
Be7 9.O-O O-O 10.Re1 Nf6 11.a3 b6 12.Bc2 Ba6 13.b4 Bc4 14.b5 Na5 15.Ne5 
Rc8 16.Bg5 g6 17.Qf3 Bd5 18.Qh3 Bb7 19.Rad1 Nd5 20.Bxe7 Qxe7 21.Nxd5 Bxd5 
22.Be4 Rfd8 23.Qf3 Rc7 24.a4 Bb3 25.Rc1 Rxd4 26.Rxc7 Qxc7 27.Ng4 f5 28.
Nf6+ Kh8 29.Bc6 Qd8 30.Nd7 Rxd7 31.Bxd7 Qxd7 32.Qc3+ Kg8 33.h4 Bxa4 34.Qf6
Bb3 35.h5 Qf7 36.Qd8+ Qf8 37.Qd7 Qf7 38.Qd8+ Qf8 39.Qd7 gxh5 40.Rc1 Bc4 
41.Qxa7 Qd8 42.Rc3 h4 43.Kh2 e5 44.g3 Kh8 45.Re3 Bd5 46.Rd3 hxg3+ 47.fxg3 
f4 48.Qf7 fxg3+ 49.Kg1 Bxf7 50.Rxd8+ Kg7 51.Kg2 Nc4 52.Kxg3 Kf6 53.Rh8 h5 
54.Rc8 Kg5 55.Kf2 h4 56.Rf8 Be6 57.Re8 Bf5 58.Re7 Nd6 59.Rxe5 Kf4 60.Re6 
Ne4+ 61.Kg2 Nc3 62.Rd6 Nd5 63.Kh2 Ke5 64.Rh6 h3 65.Rh5 Kf4 66.Rh4+ Bg4 67.
Rh8 Ne3 68.Rf8+ Bf5 69.Kg1 Kg3 70.Rg8+ Ng4 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.19"]
[Round "4"]
[White "Boersma, Paulus"]
[Black "Hresc, Vladimir"]
[Result "1-0"]
[WhiteElo "2355"]
[BlackElo "2450"]
[ECO "E05"]
[EventDate "1983.07.15"]
[PlyCount "37"]

1.Nf3 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.O-O O-O 6.d4 dxc4 7.Qc2 a6 8.Qxc4 b5
9.Qc2 Bb7 10.Bd2 Be4 11.Qc1 Qc8 12.Bg5 Qb7 13.Nbd2 Bc6 14.Qc2 a5 15.Rac1 
Ra6 16.e4 Nxe4 17.Bxe7 Re8 18.Nxe4 Bxe4 19.Ng5 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.19"]
[Round "4"]
[White "Vogel, Jaap"]
[Black "Van Mil, Johannes"]
[Result "1-0"]
[WhiteElo "2325"]
[BlackElo "2340"]
[ECO "A04"]
[EventDate "1983.07.15"]
[PlyCount "1"]

1.Nf3 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.19"]
[Round "4"]
[White "Lengyel, Bela"]
[Black "Langeweg, Christian"]
[Result "1-0"]
[WhiteElo "2315"]
[BlackElo "2420"]
[ECO "C30"]
[EventDate "1983.07.15"]
[PlyCount "81"]

1.e4 e5 2.Bc4 Nf6 3.d3 Bc5 4.Nc3 Nc6 5.f4 d6 6.Nf3 Bg4 7.Na4 Bb6 8.Nxb6 
axb6 9.O-O Qe7 10.Bb5 O-O 11.Bxc6 bxc6 12.fxe5 dxe5 13.h3 Bxf3 14.Qxf3 Nd7
15.Bd2 f6 16.a3 Rf7 17.Rf2 Nf8 18.Raf1 Ne6 19.Be3 c5 20.h4 Qd6 21.Qg4 Nd4 
22.h5 Raf8 23.c3 Nc6 24.Rf3 Kh8 25.b4 cxb4 26.axb4 Qd7 27.Qh4 Qe6 28.b5 
Na7 29.h6 g6 30.c4 Kg8 31.Bd2 Qd6 32.Qe1 c5 33.bxc6 Nxc6 34.Be3 Nd4 35.
R3f2 Ne6 36.Qc3 Nc5 37.Qa3 Rd7 38.Bxc5 bxc5 39.Rf3 Qb6 40.Qa1 Rd6 41.Qxe5 
1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.19"]
[Round "4"]
[White "De Boer, Gert Jan"]
[Black "Kuijf, Marinus"]
[Result "1/2-1/2"]
[WhiteElo "2330"]
[BlackElo "2420"]
[ECO "E15"]
[EventDate "1983.07.15"]
[PlyCount "54"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.b3 d5 6.cxd5 exd5 7.Bg2 Bd6 8.O-O O-O
9.Nc3 Re8 10.Bb2 Nbd7 11.Rc1 Rc8 12.Re1 c6 13.Nh4 Bb4 14.a3 Bxc3 15.Bxc3 
Ne4 16.Bb2 Ndf6 17.e3 Rc7 18.h3 Qd6 19.Nf3 Nxf2 20.Kxf2 Ne4+ 21.Kg1 Qxg3 
22.Re2 Re6 23.Bc3 Rg6 24.Ne5 Ng5 25.Nxg6 Nf3+ 26.Kf1 fxg6 27.Be1 Nh2+ 
1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.19"]
[Round "4"]
[White "Ligterink, Gert"]
[Black "Lobron, Eric"]
[Result "0-1"]
[WhiteElo "2430"]
[BlackElo "2480"]
[ECO "A67"]
[EventDate "1983.07.15"]
[PlyCount "74"]

1.d4 Nf6 2.c4 e6 3.Nc3 c5 4.d5 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Bb5+ Nfd7
9.a4 a6 10.Bd3 Qc7 11.Nf3 c4 12.Bc2 Nc5 13.h3 O-O 14.O-O Nbd7 15.Be3 Rb8 
16.Bd4 b5 17.axb5 axb5 18.Bxg7 Kxg7 19.Qd4+ f6 20.Nd1 Re8 21.Nf2 b4 22.Ng4
b3 23.Bb1 Qb6 24.e5 dxe5 25.fxe5 Nxe5 26.Nfxe5 fxe5 27.Nxe5 Na4 28.Qxb6 
Nxb6 29.Ra7+ Rb7 30.Rxb7+ Bxb7 31.Rf7+ Kg8 32.Rxb7 Rxe5 33.Bxg6 hxg6 34.
Rxb6 Kf7 35.Rc6 Re1+ 36.Kf2 Rc1 37.Kf3 c3 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.19"]
[Round "4"]
[White "Van Baarle, John"]
[Black "Murey, Jacob"]
[Result "0-1"]
[WhiteElo "2345"]
[BlackElo "2485"]
[ECO "E92"]
[EventDate "1983.07.15"]
[PlyCount "100"]

1.c4 g6 2.Nc3 Bg7 3.d4 Nf6 4.Nf3 O-O 5.e4 d6 6.Be2 e5 7.d5 Nh5 8.g3 Nd7 9.
Be3 Bf6 10.h4 Be7 11.Nd2 Ng7 12.h5 gxh5 13.Bxh5 f5 14.Qe2 f4 15.gxf4 exf4 
16.Bd4 Bf6 17.Nf3 c5 18.dxc6 bxc6 19.Bg4 Ne5 20.Nxe5 Bxe5 21.O-O-O Qg5 22.
Bxc8 f3+ 23.Qd2 Bf4 24.Be3 Bxe3 25.Qxe3 Qxe3+ 26.fxe3 Raxc8 27.Rxd6 Rc7 
28.Nd1 Ne8 29.Rdh6 Rg7 30.Nf2 Rg2 31.R6h2 Rf7 32.Nh3 Nd6 33.Rxg2+ fxg2 34.
Rg1 Rf1+ 35.Kc2 Rxg1 36.Nxg1 Nxc4 37.b3 Nxe3+ 38.Kd2 Ng4 39.Ke2 Kf7 40.Kf3
Nf6 41.Kxg2 Nxe4 42.Kf3 Nc3 43.a4 Ke6 44.Ke3 Kd5 45.Nh3 Kc5 46.Kd3 Kb4 47.
Ng5 Kxb3 48.Ne6 Nd5 49.a5 Nb4+ 50.Kd4 Na6 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.19"]
[Round "4"]
[White "Johansen, Darryl"]
[Black "De Roode, Peter"]
[Result "1/2-1/2"]
[WhiteElo "2485"]
[BlackElo "2250"]
[ECO "B23"]
[EventDate "1983.07.15"]
[PlyCount "149"]

1.e4 c5 2.Nc3 e6 3.Nge2 Nc6 4.g3 d5 5.exd5 exd5 6.Bg2 d4 7.Nd5 Bd6 8.d3 
Nge7 9.Nef4 O-O 10.O-O Rb8 11.Bd2 b6 12.Re1 Nxd5 13.Nxd5 Ne7 14.Qh5 Nxd5 
15.Bxd5 Bb7 16.Re4 Qf6 17.Bxb7 Rxb7 18.Rae1 h6 19.Qd5 Rd7 20.Qc6 Rc7 21.
Qd5 Rd7 22.R1e2 Rfd8 23.a4 Kh7 24.Qh5 Bb8 25.Re1 Rd5 26.Qe2 g6 27.h4 Rf5 
28.Re7 Kg7 29.c4 a6 30.b4 Rf3 31.b5 Bxg3 32.Bg5 hxg5 33.fxg3 axb5 34.Kg2 
Rf5 35.hxg5 Rxg5 36.axb5 Rh8 37.Rf1 Rf5 38.Rxf5 Qxf5 39.Qe5+ Qxe5 40.Rxe5 
Ra8 41.Re7 Ra3 42.Rb7 Rxd3 43.Rxb6 Rc3 44.Rc6 Rxc4 45.Kf3 f5 46.b6 Rb4 47.
Rc7+ Kf6 48.b7 Ke6 49.Rxc5 Rxb7 50.Rc6+ Kf7 51.Rd6 Rb3+ 52.Kf4 Rd3 53.g4 
fxg4 54.Kxg4 Rd1 55.Kf3 d3 56.Kf4 Kg7 57.Rd8 d2 58.Ke3 Re1+ 59.Kxd2 Re6 
60.Rd3 Kh6 61.Rh3+ Kg5 62.Rh1 Kf4 63.Rf1+ Kg4 64.Rg1+ Kf4 65.Rf1+ Kg3 66.
Rg1+ Kf2 67.Rg5 Kf3 68.Rg1 Re2+ 69.Kd3 Rg2 70.Rf1+ Kg3 71.Ke4 g5 72.Kf5 g4
73.Kg5 Kh2 74.Kh4 g3 75.Rf3 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.19"]
[Round "4"]
[White "Berg, Klaus"]
[Black "Van Wijgerden, Cornelis"]
[Result "0-1"]
[WhiteElo "2400"]
[BlackElo "2430"]
[ECO "D03"]
[EventDate "1983.07.15"]
[PlyCount "106"]

1.Nf3 d5 2.d4 Nf6 3.Bg5 Ne4 4.Bf4 c6 5.e3 Bg4 6.Be2 e6 7.Nbd2 Nxd2 8.Qxd2 
Be7 9.h3 Bh5 10.O-O O-O 11.c4 Nd7 12.cxd5 exd5 13.b4 Nf6 14.Rab1 Ne4 15.
Qc2 Bd6 16.b5 Bxf4 17.exf4 f6 18.bxc6 bxc6 19.Rfc1 Rc8 20.Bd3 Re8 21.Nd2 
Bg6 22.Rb7 Re7 23.Rxe7 Qxe7 24.Nxe4 Bxe4 25.Bxe4 Qxe4 26.Qxe4 dxe4 27.Kf1 
Kf7 28.Ke2 Ke6 29.Ke3 Kd6 30.Rb1 f5 31.g4 g6 32.Rb3 Rc7 33.Rb8 c5 34.Rd8+ 
Ke6 35.d5+ Ke7 36.Rh8 Kd6 37.gxf5 gxf5 38.Rf8 Kxd5 39.Rxf5+ Kc4 40.Kxe4 
Kc3 41.Re5 c4 42.f5 Kd2 43.f6 c3 44.Rd5+ Ke2 45.Rb5 c2 46.Rb2 Kd1 47.Rxc2 
Kxc2 48.f4 a5 49.Ke5 a4 50.Ke6 Rc6+ 51.Ke7 Rc7+ 52.Ke8 Rc4 53.f7 Re4+ 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.19"]
[Round "4"]
[White "Van der Vliet, Fredrik"]
[Black "Ree, Hans"]
[Result "1/2-1/2"]
[WhiteElo "2345"]
[BlackElo "2500"]
[ECO "A40"]
[EventDate "1983.07.15"]
[PlyCount "150"]

1.d4 e6 2.c4 b6 3.e4 Bb7 4.Bd3 Bb4+ 5.Bd2 Bxd2+ 6.Nxd2 d6 7.Ne2 e5 8.d5 
Ne7 9.O-O Nd7 10.b4 a5 11.a3 Ng6 12.Nb3 Nf4 13.Nxf4 exf4 14.Qd2 a4 15.Nd4 
Ne5 16.Be2 Qf6 17.Rac1 O-O 18.f3 Ba6 19.Kh1 Rfe8 20.c5 bxc5 21.bxc5 Reb8 
22.Rc2 h6 23.Rfc1 Bxe2 24.Qxe2 Rb7 25.c6 Rb6 26.Nb5 Qd8 27.Rb2 Kh7 28.Rb4 
g5 29.Rcb1 h5 30.Qd2 Rab8 31.Qc2 g4 32.Qxa4 gxf3 33.Qc2 Qh4 34.gxf3 Rg8 
35.Nd4 Rxb4 36.axb4 Rg3 37.Qe2 Qh3 38.Rf1 Nc4 39.Nf5 Rg8 40.Rg1 Ra8 41.Qf1
Qxf1 42.Rxf1 Rb8 43.Rg1 Kh8 44.Rg5 Rxb4 45.Rxh5+ Kg8 46.Rg5+ Kf8 47.Rg1 
Nd2 48.Ra1 Kg8 49.Ra3 Nc4 50.Rc3 Kh7 51.Kg2 Kg6 52.h4 Nb6 53.Rd3 Rb1 54.
Kh3 Rg1 55.Rd2 Kf6 56.Kh2 Rc1 57.h5 Nc4 58.Rg2 Ne5 59.Nd4 Rb1 60.Rg8 Rb2+ 
61.Kh3 Rb1 62.h6 Rh1+ 63.Kg2 Rxh6 64.Nf5 Rg6+ 65.Rxg6+ Nxg6 66.Nd4 Ke5 67.
Nf5 Kf6 68.Kh3 Ne5 69.Nd4 Ke7 70.Kh4 f6 71.Kh3 Kf7 72.Kh2 f5 73.Nxf5 Nxf3+
74.Kg2 Nd2 75.Nxd6+ Kf6 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.20"]
[Round "5"]
[White "Sax, Gyula"]
[Black "Timman, Jan"]
[Result "1-0"]
[WhiteElo "2570"]
[BlackElo "2605"]
[ECO "B46"]
[EventDate "1983.07.15"]
[PlyCount "59"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 a6 6.Nxc6 bxc6 7.Bd3 Qc7 8.O-O
Nf6 9.f4 d5 10.e5 Nd7 11.Na4 g6 12.c4 Nc5 13.Be3 Nxa4 14.Qxa4 Qd7 15.Rac1 
Be7 16.cxd5 cxd5 17.Qd4 O-O 18.Rc2 Rb8 19.a3 Bd8 20.Qc3 Qa4 21.f5 exf5 22.
Bh6 d4 23.Qc5 Re8 24.e6 Qa5 25.exf7+ Kxf7 26.Bc4+ Be6 27.Qa7+ Be7 28.Bxe6+
Kxe6 29.Re2+ Kf6 30.Qxd4+ 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.20"]
[Round "5"]
[White "Hort, Vlastimil"]
[Black "Ligterink, Gert"]
[Result "1-0"]
[WhiteElo "2595"]
[BlackElo "2430"]
[ECO "E42"]
[EventDate "1983.07.15"]
[PlyCount "49"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Ne2 cxd4 6.exd4 O-O 7.a3 Be7 8.Nf4 d5
9.cxd5 Nxd5 10.Ncxd5 exd5 11.Bd3 Bg5 12.O-O Nc6 13.Re1 g6 14.Bc2 Bf6 15.
Be3 Re8 16.Ba4 Qd6 17.Qf3 Nxd4 18.Bxd4 Rxe1+ 19.Rxe1 Bxd4 20.Re8+ Kg7 21.
Qg3 Qc5 22.h4 h6 23.Nh5+ Kh7 24.Qf4 f5 25.b4 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.20"]
[Round "5"]
[White "Kuijf, Marinus"]
[Black "De Roode, Peter"]
[Result "1-0"]
[WhiteElo "2420"]
[BlackElo "2250"]
[ECO "B85"]
[EventDate "1983.07.15"]
[PlyCount "81"]

1.e4 c5 2.Ne2 d6 3.Nbc3 e6 4.d4 cxd4 5.Nxd4 a6 6.a4 Nf6 7.Be2 Nc6 8.Be3 
Be7 9.O-O O-O 10.f4 Bd7 11.Qe1 Re8 12.Qg3 e5 13.fxe5 Nxe5 14.Rad1 Rc8 15.
Nf5 Bxf5 16.exf5 Qa5 17.Kh1 Bf8 18.Bd4 Nfd7 19.Rf4 Nf6 20.Rh4 Re7 21.Bd3 
Rce8 22.Ne4 Nxe4 23.Bxe4 f6 24.Bc3 Qc5 25.Bd5+ Nf7 26.Rc4 Qa7 27.Bxf6 Re3 
28.Bd4 Rxg3 29.Bxa7 Rg5 30.Be6 g6 31.g4 h5 32.h3 hxg4 33.hxg4 gxf5 34.gxf5
Be7 35.Rg1 Kg7 36.Bd4+ Ne5 37.Rxg5+ Bxg5 38.Rc7+ Be7 39.Rxb7 Rh8+ 40.Kg2 
Kf6 41.Ra7 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.20"]
[Round "5"]
[White "Henley, Ron"]
[Black "Lengyel, Bela"]
[Result "1-0"]
[WhiteElo "2525"]
[BlackElo "2315"]
[ECO "D35"]
[EventDate "1983.07.15"]
[PlyCount "63"]

1.d4 d5 2.Nf3 Nf6 3.c4 e6 4.Nc3 Nbd7 5.cxd5 exd5 6.Bf4 c6 7.e3 Be7 8.Qc2 
O-O 9.Bd3 Re8 10.h3 Nf8 11.Ne5 Be6 12.O-O N6d7 13.Nf3 Ng6 14.Bh2 Ndf8 15.
Na4 Bd6 16.Bxd6 Qxd6 17.b4 Qxb4 18.Nc5 b5 19.a4 bxa4 20.Rfb1 Qa5 21.Rxa4 
Qd8 22.Ra6 Bc8 23.Nb7 Qe7 24.Qxc6 Ne6 25.Ra5 Rb8 26.Nd6 Bd7 27.Qxd5 Rxb1+ 
28.Bxb1 Rb8 29.Bxg6 hxg6 30.Rxa7 Rb1+ 31.Kh2 Rf1 32.Nc8 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.20"]
[Round "5"]
[White "Van der Wiel, John"]
[Black "Short, Nigel David"]
[Result "0-1"]
[WhiteElo "2515"]
[BlackElo "2475"]
[ECO "C03"]
[EventDate "1983.07.15"]
[PlyCount "140"]

1.e4 e6 2.d4 d5 3.Nd2 Be7 4.Ngf3 Nf6 5.e5 Ne4 6.Bd3 Nxd2 7.Bxd2 b6 8.Qe2 
a5 9.h4 Ba6 10.Rh3 Bxd3 11.Qxd3 Nc6 12.Rg3 Bf8 13.c3 h6 14.h5 Qc8 15.Nh2 
Qa6 16.Qxa6 Rxa6 17.f4 Ne7 18.Rh3 c5 19.g4 cxd4 20.cxd4 Kd7 21.a4 Nc6 22.
Bc3 Be7 23.Ke2 Raa8 24.Rf1 Rab8 25.g5 g6 26.hxg6 hxg5 27.Rxh8 Rxh8 28.Ng4 
fxg6 29.fxg5 Bxg5 30.Rf7+ Be7 31.Rg7 Ke8 32.Rxg6 Kf7 33.Rh6 Rxh6 34.Nxh6+ 
Kg6 35.Ng4 Kf5 36.Kf3 Bg5 37.Nf2 Bd8 38.Nd3 Be7 39.Ke3 Kg4 40.Nf2+ Kg3 41.
Nh1+ Kg2 42.Nf2 Nxe5 43.dxe5 Bc5+ 44.Ke2 Bxf2 45.b4 axb4 46.Bxb4 Kg3 47.
Bd6 Bg1 48.Kd3 Kf4 49.Bc7 Bf2 50.Ke2 Bc5 51.Kd3 Kf5 52.Bb8 Bb4 53.Bc7 Ba5 
54.Bd6 Kg6 55.Ba3 Kf7 56.Bb2 Ke7 57.Bd4 Kd7 58.Bf2 Kc6 59.Be3 Bb4 60.Bf2 
Bc5 61.Be1 Bg1 62.Bb4 Bc5 63.Be1 b5 64.axb5+ Kxb5 65.Bg3 Bg1 66.Bf4 Kc5 
67.Bg5 d4 68.Ke4 Kc4 69.Bd2 d3 70.Kf4 Kd4 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.20"]
[Round "5"]
[White "Ree, Hans"]
[Black "Boersma, Paulus"]
[Result "1-0"]
[WhiteElo "2500"]
[BlackElo "2355"]
[ECO "E83"]
[EventDate "1983.07.15"]
[PlyCount "125"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 Nc6 7.Nge2 a6 8.Qd2 Re8 
9.Rc1 Bd7 10.b3 Qb8 11.Ng3 e5 12.d5 Nd4 13.Nce2 c5 14.dxc6 Nxc6 15.Nc3 Nd4
16.Nge2 Qa7 17.Kf2 b5 18.Rd1 b4 19.Nb1 Bc6 20.Nxd4 exd4 21.Bxd4 Qe7 22.Be2
Bxe4 23.Rhe1 Bxb1 24.Rxb1 Nd7 25.Bxg7 Kxg7 26.Bf1 Qf6 27.Rxe8 Rxe8 28.Rd1 
Nc5 29.Kg1 a5 30.Qxd6 Qxd6 31.Rxd6 a4 32.Rb6 axb3 33.axb3 Re3 34.Rxb4 Nxb3
35.Kf2 Rc3 36.Be2 Nc1 37.Bf1 Nb3 38.h4 h6 39.Rb7 Rc2+ 40.Ke3 Nc5 41.Rb5 
Ne6 42.g3 g5 43.hxg5 hxg5 44.Bd3 Rc1 45.g4 Kf6 46.Kd2 Ra1 47.Be4 Ra3 48.
Rd5 Ke7 49.Kc2 f6 50.Kb2 Ra7 51.Kc3 Ra6 52.Kb4 Ra1 53.Bf5 Rf1 54.Rd3 Nf4 
55.Re3+ Kd6 56.c5+ Kc6 57.Be4+ Nd5+ 58.Bxd5+ Kxd5 59.Rd3+ Ke6 60.c6 Rc1 
61.Kb5 f5 62.gxf5+ Kxf5 63.Kb6 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.20"]
[Round "5"]
[White "Seirawan, Yasser"]
[Black "Lobron, Eric"]
[Result "0-1"]
[WhiteElo "2605"]
[BlackElo "2480"]
[ECO "D34"]
[EventDate "1983.07.15"]
[PlyCount "48"]

1.Nf3 e6 2.c4 c5 3.Nc3 Nc6 4.g3 d5 5.cxd5 exd5 6.d4 Nf6 7.Bg2 Be7 8.O-O 
O-O 9.Bg5 cxd4 10.Nxd4 h6 11.Bxf6 Bxf6 12.Nb3 Bg4 13.Bxd5 Bxc3 14.bxc3 Qf6
15.Qc2 Rac8 16.Qb2 Nb4 17.Bxb7 Rxc3 18.e3 Rb8 19.Be4 Bh3 20.Rfc1 Nxa2 21.
Rxa2 Rbxb3 22.Rxa7 Qxf2+ 23.Kxf2 Rxb2+ 24.Kf3 Rxc1 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.20"]
[Round "5"]
[White "Langeweg, Christian"]
[Black "De Boer, Gert Jan"]
[Result "1-0"]
[WhiteElo "2420"]
[BlackElo "2330"]
[ECO "B07"]
[EventDate "1983.07.15"]
[PlyCount "151"]

1.d4 Nf6 2.Nf3 g6 3.Bg5 Bg7 4.c3 O-O 5.Nbd2 d6 6.e4 Nbd7 7.Bd3 e5 8.O-O 
Qe8 9.Re1 Nh5 10.Qc2 Nf4 11.Bf1 Ne6 12.Bh4 f5 13.exf5 gxf5 14.dxe5 dxe5 
15.Nd4 exd4 16.Rxe6 Qh5 17.Bc4 Kh8 18.Be7 Re8 19.Rae1 Nb6 20.R6e2 Nxc4 21.
Nxc4 Bd7 22.cxd4 Bxd4 23.Qd3 c5 24.Nd6 Rg8 25.Qxd4+ cxd4 26.Bf6+ Rg7 27.
Re7 Qg6 28.Bxg7+ Qxg7 29.Rxg7 Kxg7 30.Rd1 Kf6 31.Rxd4 Ke5 32.Rd2 Bc6 33.
Nf7+ Kf6 34.Nd8 Rc8 35.Nxc6 Rxc6 36.g3 Rc7 37.Kg2 Ke5 38.Kf3 b6 39.Re2+ 
Kf6 40.Rd2 Ke5 41.Ke3 a5 42.Rd3 Rc2 43.Rb3 Rc6 44.Rb5+ Kf6 45.Kf4 Rc4+ 46.
Kf3 Rc6 47.Kg2 Rd6 48.Kh3 Kg5 49.f4+ Kf6 50.Kh4 Kg6 51.h3 Rf6 52.Rd5 Kh6 
53.Re5 Kg6 54.Rd5 Kh6 55.a4 Kg6 56.Rd4 Re6 57.g4 Rc6 58.b3 Rf6 59.Rd5 fxg4
60.Kxg4 Rc6 61.f5+ Kg7 62.h4 Rc3 63.Rb5 Rc6 64.Kf4 Kf6 65.Rd5 Ke7 66.Kg5 
Rc3 67.Rb5 Rc6 68.Re5+ Kf7 69.Re6 Rxe6 70.fxe6+ Kxe6 71.Kh6 Kf5 72.Kxh7 
Kg4 73.Kg6 Kxh4 74.Kf5 Kg3 75.Ke4 Kf2 76.Kd5 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.20"]
[Round "5"]
[White "Sunye Neto, Jaime"]
[Black "Van der Sterren, Paul"]
[Result "1/2-1/2"]
[WhiteElo "2490"]
[BlackElo "2445"]
[ECO "A33"]
[EventDate "1983.07.15"]
[PlyCount "111"]

1.c4 c5 2.Nc3 Nc6 3.Nf3 Nf6 4.d4 cxd4 5.Nxd4 e6 6.g3 Qb6 7.Nb3 Ne5 8.e4 
Bb4 9.Qe2 O-O 10.f4 Nc6 11.e5 Ne8 12.Bd2 f6 13.c5 Qd8 14.exf6 Nxf6 15.a3 
Bxc3 16.Bxc3 Nd5 17.Bg2 Nxc3 18.bxc3 Na5 19.Nd2 Qc7 20.Qe3 Rb8 21.O-O b6 
22.Rab1 Ba6 23.cxb6 Rxb6 24.Rfd1 Rxb1 25.Rxb1 Rc8 26.Qd4 Nc6 27.Qc5 Bd3 
28.Rd1 Nb8 29.Qxc7 Rxc7 30.c4 Na6 31.Kf2 Nc5 32.Ke3 Kf8 33.Rc1 Ke7 34.Rc3 
Bf5 35.Bf3 h6 36.Bd1 Rb7 37.Nb3 Na4 38.Rc1 Nb2 39.Nd4 Nxd1+ 40.Rxd1 Bg4 
41.Rd3 Rb1 42.Rc3 Re1+ 43.Kf2 Re4 44.Nf3 g5 45.Ne5 Bf5 46.Kf3 gxf4 47.gxf4
Re1 48.c5 Be4+ 49.Kf2 Rh1 50.h3 Rh2+ 51.Kg3 Rd2 52.Rc4 Rg2+ 53.Kh4 Bc6 54.
Nxc6+ dxc6 55.Ra4 Kf6 56.Rxa7 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.20"]
[Round "5"]
[White "Van Wijgerden, Cornelis"]
[Black "Borm, Franciscus"]
[Result "1/2-1/2"]
[WhiteElo "2430"]
[BlackElo "2355"]
[ECO "A07"]
[EventDate "1983.07.15"]
[PlyCount "45"]

1.g3 Nf6 2.Bg2 d5 3.d3 Nc6 4.Nf3 g6 5.O-O Bg7 6.Nbd2 O-O 7.e4 dxe4 8.dxe4 
e5 9.c3 a5 10.Qc2 Qe7 11.a4 Rd8 12.Re1 h6 13.Nc4 b6 14.b3 Ba6 15.Bf1 Qe6 
16.Ba3 Bf8 17.Bxf8 Kxf8 18.Rad1 Kg7 19.Ne3 Rxd1 20.Rxd1 Bxf1 21.Kxf1 Rd8 
22.Rxd8 Nxd8 23.Nc4 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.20"]
[Round "5"]
[White "Vogel, Jaap"]
[Black "Berg, Klaus"]
[Result "0-1"]
[WhiteElo "2325"]
[BlackElo "2400"]
[ECO "A07"]
[EventDate "1983.07.15"]
[PlyCount "72"]

1.Nf3 Nf6 2.g3 d5 3.Bg2 Bf5 4.b3 e6 5.Bb2 h6 6.d3 Be7 7.Nbd2 O-O 8.O-O c5 
9.Ne5 Nbd7 10.e4 Bh7 11.Qe2 Nxe5 12.Bxe5 Qa5 13.a4 Rad8 14.Rad1 a6 15.Rfe1
Bg6 16.h3 c4 17.dxc4 Nxe4 18.Nxe4 dxe4 19.Bb2 f5 20.Rxd8 Rxd8 21.Rd1 Bc5 
22.Rxd8+ Qxd8 23.Qe1 Be7 24.a5 Bh5 25.g4 Bg6 26.b4 Qd6 27.Bc3 Qc6 28.Bf1 
f4 29.Qd2 Bg5 30.b5 Qc7 31.Bb4 axb5 32.Bd6 e3 33.Qb4 Qc6 34.c5 Qf3 35.Qe1 
Bh4 36.Qe2 exf2+ 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.20"]
[Round "5"]
[White "Murey, Jacob"]
[Black "Bohm, Hans"]
[Result "1/2-1/2"]
[WhiteElo "2485"]
[BlackElo "2390"]
[ECO "A34"]
[EventDate "1983.07.15"]
[PlyCount "113"]

1.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 5.e4 Nb4 6.Bb5+ N8c6 7.O-O a6 8.
Bxc6+ Nxc6 9.d3 Bg4 10.h3 Bh5 11.Nd5 e6 12.Nf4 Bxf3 13.Qxf3 Qf6 14.Qg4 g6 
15.Ne2 h5 16.Qg3 h4 17.Qc7 Qe7 18.Qb6 Qd8 19.Qb3 Bg7 20.Be3 b6 21.Qa4 Qd7 
22.Rfd1 Nd4 23.Qxd7+ Kxd7 24.Bxd4 Bxd4 25.Rd2 e5 26.Rb1 a5 27.a4 g5 28.Kf1
f5 29.Re1 f4 30.f3 Kc6 31.Nc3 Rhd8 32.Ke2 Be3 33.Rc2 Rd4 34.Ra1 Rb4 35.Nd5
Bd4 36.Nxb4+ axb4 37.Kd1 Kb7 38.Re2 b5 39.a5 b3 40.Ra3 Ka6 41.Ra1 Rd8 42.
Ke1 c4 43.dxc4 bxc4 44.Kf1 Rb8 45.Rd2 Bxb2 46.Rxb2 c3 47.Rxb3 Rxb3 48.Ke1 
Rb4 49.Kd1 Rb2 50.Ra3 Rxg2 51.Rxc3 Rg3 52.Rc5 Rxf3 53.Rxe5 Rxh3 54.Rxg5 
Rg3 55.Rh5 h3 56.Ke2 Ra3 57.Kf2 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.20"]
[Round "5"]
[White "Hresc, Vladimir"]
[Black "Van Baarle, John"]
[Result "1-0"]
[WhiteElo "2450"]
[BlackElo "2345"]
[ECO "B08"]
[EventDate "1983.07.15"]
[PlyCount "88"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Be2 O-O 6.O-O c6 7.a4 Nbd7 8.h3 e5 
9.dxe5 dxe5 10.Be3 Qe7 11.Qd3 Nh5 12.Qc4 Nf4 13.Rfd1 Nxe2+ 14.Nxe2 Re8 15.
a5 a6 16.Rd3 Bf8 17.Rad1 Nf6 18.Bg5 Kg7 19.Ng3 Qb4 20.Nxe5 Rxe5 21.Bxf6+ 
Kxf6 22.Rf3+ Bf5 23.Qd3 Kg7 24.exf5 Rae8 25.Qd7 Kg8 26.fxg6 fxg6 27.Qf7+ 
Kh8 28.Rb3 Re1+ 29.Rxe1 Rxe1+ 30.Kh2 Qe7 31.Rxb7 Qxf7 32.Rxf7 Bd6 33.Rf6 
Rd1 34.f4 Kg7 35.Ne4 Bb8 36.Rxc6 Rd4 37.Re6 Bxf4+ 38.g3 Bc1 39.c3 Rd5 40.
b4 Bb2 41.Re7+ Kh6 42.Rxh7+ Kxh7 43.Nf6+ Kg7 44.Nxd5 Kf7 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.20"]
[Round "5"]
[White "Van der Vliet, Fredrik"]
[Black "Chandler, Murray Graham"]
[Result "0-1"]
[WhiteElo "2345"]
[BlackElo "2485"]
[ECO "D34"]
[EventDate "1983.07.15"]
[PlyCount "80"]

1.d4 d5 2.c4 e6 3.Nf3 c5 4.cxd5 exd5 5.g3 Nf6 6.Bg2 Nc6 7.O-O Be7 8.Nc3 
O-O 9.Bg5 cxd4 10.Nxd4 h6 11.Be3 Re8 12.Rc1 Bg4 13.Qa4 Na5 14.Rcd1 Nc4 15.
Bc1 Nb6 16.Qc2 Rc8 17.Qd3 Bb4 18.Ncb5 a6 19.Na3 Bxa3 20.Qxa3 Bxe2 21.Nxe2 
Rxe2 22.Qb3 Qd6 23.Bf3 Ree8 24.Be3 Nc4 25.Bd4 b5 26.Bxf6 Qxf6 27.Bxd5 Re2 
28.Bxc4 Rxc4 29.Rd7 Rcc2 30.Qd3 g6 31.Qd4 Qxd4 32.Rxd4 Rxb2 33.a4 b4 34.a5
Re5 35.Ra1 Rf5 36.Rf4 Rxf4 37.gxf4 Rc2 38.Kg2 Rc5 39.Kf3 Rb5 40.Ke4 Kg7 
0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.20"]
[Round "5"]
[White "Van Mil, Johannes"]
[Black "Franco Ocampos, Zenon"]
[Result "1/2-1/2"]
[WhiteElo "2340"]
[BlackElo "2495"]
[ECO "A43"]
[EventDate "1983.07.15"]
[PlyCount "87"]

1.d4 Nf6 2.Nc3 c5 3.d5 g6 4.e4 d6 5.Be2 Bg7 6.Nf3 O-O 7.O-O Na6 8.h3 Nc7 
9.a4 b6 10.Bf4 Rb8 11.e5 Nfe8 12.Bc4 a6 13.Qe2 Qd7 14.Ra3 b5 15.axb5 axb5 
16.Rb3 Bb7 17.Nxb5 Bxd5 18.Bxd5 Nxd5 19.Bg3 Nb4 20.exd6 exd6 21.c4 Rb6 22.
Re3 Bf6 23.Ra1 Ng7 24.Ra7 Qd8 25.Bf4 Nf5 26.Re4 d5 27.cxd5 Nxd5 28.Be5 
Bxe5 29.Nxe5 Nf6 30.Rea4 Qd5 31.Nc3 Qe6 32.f4 Nd4 33.Qc4 Qxc4 34.Rxc4 Rxb2
35.Rxc5 Nh5 36.Rc4 Ne6 37.Nd5 Rd2 38.Rd7 Rd8 39.Rxd8+ Nxd8 40.Ne3 Ne6 41.
f5 gxf5 42.Nxf5 Nhf4 43.Rc8+ Rd8 44.Rxd8+ 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.20"]
[Round "5"]
[White "Grooten, Herman"]
[Black "Johansen, Darryl"]
[Result "0-1"]
[WhiteElo "2340"]
[BlackElo "2485"]
[ECO "E10"]
[EventDate "1983.07.15"]
[PlyCount "44"]

1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 b5 5.Bg5 exd5 6.cxd5 Qa5+ 7.Nc3 Ne4 8.Qd3 
Nxg5 9.Nxg5 Be7 10.Qe4 d6 11.Ne6 fxe6 12.dxe6 Qb4 13.Qxa8 Qxb2 14.Nd5 
Qxa1+ 15.Kd2 Qxa2+ 16.Kc1 Qc4+ 17.Kd2 Qd4+ 18.Kc1 Bxe6 19.Qxb8+ Kf7 20.
Qxh8 Qa1+ 21.Kd2 Qb2+ 22.Kd3 Bxd5 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.21"]
[Round "6"]
[White "Timman, Jan"]
[Black "Seirawan, Yasser"]
[Result "1/2-1/2"]
[WhiteElo "2605"]
[BlackElo "2605"]
[ECO "D52"]
[EventDate "1983.07.15"]
[PlyCount "76"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Nbd7 5.Bg5 c6 6.e3 Qa5 7.Nd2 dxc4 8.Bxf6 
Nxf6 9.Nxc4 Qc7 10.g3 Bd7 11.Bg2 c5 12.d5 exd5 13.Nxd5 Nxd5 14.Bxd5 O-O-O 
15.a4 f5 16.Qf3 Kb8 17.O-O h5 18.Rfd1 Bc8 19.a5 g5 20.Ra3 Rh6 21.Rdd3 h4 
22.Rab3 g4 23.Qf4 hxg3 24.hxg3 Ra6 25.Rb5 Qxf4 26.gxf4 Kc7 27.Rbb3 Bg7 28.
Kf1 b6 29.axb6+ axb6 30.Na3 Ra5 31.Bc4 Rxd3 32.Bxd3 Bd7 33.Nb5+ Kc6 34.Na3
Be6 35.Bb5+ Kc7 36.Bc4 Bc8 37.Be2 Bd7 38.Bb5 Bxb5+ 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.21"]
[Round "6"]
[White "Short, Nigel David"]
[Black "Chandler, Murray Graham"]
[Result "1/2-1/2"]
[WhiteElo "2475"]
[BlackElo "2485"]
[ECO "D35"]
[EventDate "1983.07.15"]
[PlyCount "25"]

1.d4 Nf6 2.Nf3 d5 3.c4 e6 4.Nc3 c6 5.cxd5 exd5 6.Bg5 Be7 7.e3 Bf5 8.Bd3 
Bxd3 9.Qxd3 O-O 10.Bxf6 Bxf6 11.O-O Be7 12.Rab1 a5 13.Rfc1 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.21"]
[Round "6"]
[White "Van der Sterren, Paul"]
[Black "Van der Vliet, Fredrik"]
[Result "1-0"]
[WhiteElo "2445"]
[BlackElo "2345"]
[ECO "E12"]
[EventDate "1983.07.15"]
[PlyCount "73"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.a3 c5 5.d5 Ba6 6.Qc2 exd5 7.cxd5 g6 8.Nc3 Bg7 
9.g3 O-O 10.Bg2 d6 11.O-O Nbd7 12.Re1 b5 13.h3 Rc8 14.e4 Ne5 15.Nxe5 dxe5 
16.Be3 Qc7 17.b4 Nd7 18.Bf1 Qb7 19.Qd2 f5 20.exf5 gxf5 21.bxc5 Nxc5 22.
Rab1 f4 23.gxf4 exf4 24.Bd4 Rf7 25.Bxb5 Bxd4 26.Qxd4 Bxb5 27.Rxb5 Rg7+ 28.
Kh2 Qc7 29.d6 Qc6 30.Rg1 Rxg1 31.Kxg1 Ne6 32.Qf6 Qxc3 33.Qxe6+ Kh8 34.d7 
Qg7+ 35.Kh2 Rd8 36.Qe8+ Qg8 37.Re5 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.21"]
[Round "6"]
[White "Henley, Ron"]
[Black "Van der Wiel, John"]
[Result "1/2-1/2"]
[WhiteElo "2525"]
[BlackElo "2515"]
[ECO "E12"]
[EventDate "1983.07.15"]
[PlyCount "35"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.a3 d5 6.cxd5 Nxd5 7.Qc2 c5 8.e4 Nxc3
9.bxc3 Nd7 10.Bd3 Qc7 11.Qb1 Be7 12.O-O O-O 13.Ra2 Rfd8 14.Re2 Nf8 15.h4 
Bf6 16.Re3 Kh8 17.Bb2 Rac8 18.Qe1 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.21"]
[Round "6"]
[White "Ree, Hans"]
[Black "Hort, Vlastimil"]
[Result "0-1"]
[WhiteElo "2500"]
[BlackElo "2595"]
[ECO "E11"]
[EventDate "1983.07.15"]
[PlyCount "108"]

1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Nbd2 b6 5.a3 Bxd2+ 6.Bxd2 Bb7 7.Bg5 h6 8.Bh4
d6 9.e3 Nbd7 10.Bd3 Qe7 11.Qc2 g5 12.Bg3 h5 13.h4 g4 14.Nd2 Bxg2 15.Rg1 
Bb7 16.b4 c5 17.Qb2 Rc8 18.dxc5 bxc5 19.b5 Rd8 20.Ne4 e5 21.Ng5 Nf8 22.
O-O-O Ne6 23.Qc2 Nd7 24.Be4 Bxe4 25.Nxe4 Nf6 26.Nc3 Ng7 27.Rgf1 Qe6 28.f4 
e4 29.f5 Nxf5 30.Nd5 Nxd5 31.cxd5 Qg6 32.Qxe4+ Ne7 33.Qc4 O-O 34.e4 f6 35.
Rd2 Qg7 36.Qc3 f5 37.e5 Ng6 38.Rdf2 f4 39.Bxf4 Nxf4 40.Rxf4 Rxf4 41.Rxf4 
Qxe5 42.Qxe5 dxe5 43.Rf5 Rxd5 44.Rxh5 Rd7 45.Rxe5 g3 46.Re1 Kh7 47.Kc2 Kh6
48.Kc3 Rd4 49.Rg1 Ra4 50.Kd3 Kh5 51.Ke3 Kxh4 52.Ra1 Kh3 53.Kf3 g2 54.Kf2 
Kh2 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.21"]
[Round "6"]
[White "Lobron, Eric"]
[Black "Sax, Gyula"]
[Result "1/2-1/2"]
[WhiteElo "2480"]
[BlackElo "2570"]
[ECO "A09"]
[EventDate "1983.07.15"]
[PlyCount "35"]

1.Nf3 Nf6 2.c4 c5 3.g3 d5 4.Bg2 Nc6 5.O-O d4 6.d3 e5 7.a3 a5 8.e3 Be7 9.
exd4 exd4 10.Re1 O-O 11.Nbd2 Bf5 12.Nh4 Bg4 13.Bf3 Qd7 14.Ng2 Rfe8 15.Nf4 
Bxf3 16.Nxf3 Bd6 17.Rxe8+ Rxe8 18.Kg2 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.21"]
[Round "6"]
[White "Borm, Franciscus"]
[Black "Murey, Jacob"]
[Result "1-0"]
[WhiteElo "2355"]
[BlackElo "2485"]
[ECO "B83"]
[EventDate "1983.07.15"]
[PlyCount "125"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 Nc6 7.Be3 Bd7 8.O-O 
Be7 9.f4 O-O 10.Qe1 Qb8 11.Qg3 Rd8 12.Kh1 Be8 13.Rad1 Bf8 14.a3 Kh8 15.Bd3
h6 16.Nf3 b5 17.e5 dxe5 18.fxe5 Nd5 19.Nxd5 Rxd5 20.Rde1 b4 21.Be4 Rd8 22.
Nh4 Kg8 23.Bxh6 f5 24.Nxf5 Qxe5 25.Bf4 Qxf5 26.Bxf5 exf5 27.axb4 Bxb4 28.
c3 Bf8 29.Bc7 Rd5 30.c4 Rd7 31.Rxf5 Bf7 32.b3 Nd4 33.Rff1 Nxb3 34.Rd1 Nd2 
35.Rfe1 Ne4 36.Qf3 Rxc7 37.Rxe4 Rac8 38.Rc1 a5 39.Qd1 Rxc4 40.Rexc4 Rxc4 
41.Rxc4 Bxc4 42.Qa4 Bb4 43.Qe8+ Bf8 44.Qa8 Be6 45.Qxa5 Be7 46.Qe5 Kf7 47.
h4 Bf6 48.Qe4 g6 49.Qf4 Kg7 50.Kh2 Bf7 51.g4 Be7 52.Kg3 Kg8 53.Qe5 Bf8 54.
Qb8 Kg7 55.Qc7 Kg8 56.Qd8 Kg7 57.Kf4 Ba3 58.Qc7 Bb2 59.Ke4 Ba1 60.g5 Kf8 
61.Qd6+ Kg8 62.Qd8+ Kh7 63.Qf8 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.21"]
[Round "6"]
[White "Bohm, Hans"]
[Black "Sunye Neto, Jaime"]
[Result "1/2-1/2"]
[WhiteElo "2390"]
[BlackElo "2490"]
[ECO "E39"]
[EventDate "1983.07.15"]
[PlyCount "108"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5 5.dxc5 O-O 6.g3 Bxc5 7.Nf3 Nc6 8.Bg5 
Be7 9.Rd1 Qa5 10.e4 Rd8 11.Be2 a6 12.O-O d6 13.h3 Bd7 14.Rd2 Ne5 15.Nxe5 
Qxe5 16.Be3 Bc6 17.Bb6 Nxe4 18.Bxd8 Rxd8 19.Nxe4 Bxe4 20.Bd3 f5 21.Rfd1 
Bc6 22.Re2 Qf6 23.Re3 Qg6 24.f4 Bf6 25.Bf1 Be4 26.Qb3 Qh6 27.a3 g5 28.Rxe4
fxe4 29.Qxb7 gxf4 30.Qxe4 Bxb2 31.gxf4 Kh8 32.Rd2 Bc1 33.Rg2 Qxf4 34.Qxf4 
Bxf4 35.Re2 Rg8+ 36.Kf2 Rg6 37.Re4 Bc1 38.a4 Ba3 39.Bd3 Bc5+ 40.Kf3 Rh6 
41.Kg3 Bb4 42.h4 Kg7 43.Kg4 Rf6 44.Re2 a5 45.Be4 Rf1 46.Bg2 Rf8 47.Be4 h6 
48.Re3 Rf2 49.Bb7 Rc2 50.Re4 Kf6 51.Kh5 d5 52.cxd5 exd5 53.Rd4 Rc5 54.Rxd5
Rxd5+ 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.21"]
[Round "6"]
[White "Franco Ocampos, Zenon"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[WhiteElo "2495"]
[BlackElo "2430"]
[ECO "B08"]
[EventDate "1983.07.15"]
[PlyCount "53"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be2 Bg7 5.Nf3 O-O 6.O-O c6 7.a4 Qc7 8.a5 e5 9.
dxe5 dxe5 10.Be3 Ng4 11.Bd2 Nd7 12.b4 Rd8 13.Ng5 Nf8 14.Bc4 Nh6 15.Qc1 Kh8
16.Rd1 f6 17.Nf3 Nf7 18.Be3 Be6 19.Rxd8 Qxd8 20.Qf1 Qe8 21.Qd3 Rd8 22.Qe2 
a6 23.Bxe6 Nxe6 24.Na4 Bf8 25.c3 Nd6 26.Nd2 Nb5 27.Nb3 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.21"]
[Round "6"]
[White "Boersma, Paulus"]
[Black "Langeweg, Christian"]
[Result "1-0"]
[WhiteElo "2355"]
[BlackElo "2420"]
[ECO "A33"]
[EventDate "1983.07.15"]
[PlyCount "53"]

1.Nf3 Nf6 2.c4 c5 3.Nc3 Nc6 4.d4 cxd4 5.Nxd4 e6 6.g3 Bc5 7.Nb3 Bb4 8.Bg2 
d5 9.cxd5 Nxd5 10.O-O Nxc3 11.bxc3 Bxc3 12.Qxd8+ Kxd8 13.Rb1 Bb4 14.Rd1+ 
Ke8 15.Nd4 Nxd4 16.Rxd4 Bc5 17.Rg4 e5 18.Rg5 Bd6 19.Bxb7 Rb8 20.Bc6+ Ke7 
21.Rxb8 Bxb8 22.Rxg7 Kf6 23.Bh6 Bf5 24.Rg5 Rd8 25.h4 Rd1+ 26.Kg2 Be6 27.
Rg8 1-0

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.21"]
[Round "6"]
[White "Lengyel, Bela"]
[Black "Kuijf, Marinus"]
[Result "1/2-1/2"]
[WhiteElo "2315"]
[BlackElo "2420"]
[ECO "C19"]
[EventDate "1983.07.15"]
[PlyCount "126"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Ne7 7.a4 Qa5 8.Bd2 
Nbc6 9.Nf3 Bd7 10.Be2 Qc7 11.O-O h6 12.Qc1 c4 13.Ne1 O-O 14.g3 f6 15.exf6 
Rxf6 16.Bf4 Qa5 17.Qd2 Ng6 18.Bd6 Nce7 19.Ng2 Nf5 20.Bb4 Qc7 21.a5 Nge7 
22.Qf4 Qd8 23.Qc1 Nc6 24.Ba3 Be8 25.Qb2 Rb8 26.Bc5 Nd6 27.f3 Bg6 28.Ne3 
Bh5 29.Rf2 g5 30.Rb1 Nf7 31.Qa3 Qc7 32.Kg2 Rd8 33.h3 Bg6 34.Rg1 h5 35.h4 
gxh4 36.gxh4 Qf4 37.Be7 Nxe7 38.Qxe7 Rf8 39.Kh1 Nh6 40.Rfg2 Qxh4+ 41.Rh2 
Qf4 42.Ng2 Qb8 43.Nh4 R8f7 44.Qc5 Rg7 45.Bxc4 b6 46.axb6 axb6 47.Qb5 Ng4 
48.Rhg2 Be8 49.Qb4 dxc4 50.d5 Qd8 51.fxg4 Rf4 52.Rh2 Qxd5+ 53.Ng2 Rfxg4 
54.Rf1 Rxg2 55.Rf8+ Kh7 56.Rh8+ Kxh8 57.Qf8+ Kh7 58.Rxh5+ Bxh5 59.Qh8+ Kg6
60.Qxg7+ Kf5 61.Qf6+ Kg4 62.Qf4+ Kh3 63.Qh4+ Kxh4 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.21"]
[Round "6"]
[White "De Boer, Gert Jan"]
[Black "Berg, Klaus"]
[Result "1/2-1/2"]
[WhiteElo "2330"]
[BlackElo "2400"]
[ECO "A58"]
[EventDate "1983.07.15"]
[PlyCount "113"]

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 g6 7.g3 d6 8.Bg2 Bg7 
9.Nh3 O-O 10.O-O Nbd7 11.Qc2 Qa5 12.Rd1 Rfb8 13.Bd2 Ne8 14.Nf4 Nc7 15.Rab1
Bc8 16.h4 Nb5 17.Nxb5 Qxb5 18.b3 Qa6 19.a4 Rb6 20.Be4 Rab8 21.a5 R6b7 22.
Bd3 Qa8 23.e3 Ne5 24.Be2 Bf5 25.e4 Bg4 26.Bxg4 Nxg4 27.h5 Rb5 28.hxg6 hxg6
29.Nd3 Ne5 30.Nxe5 Bxe5 31.Be1 Kg7 32.Qc4 Rb4 33.Bxb4 Rxb4 34.Qe2 Qxa5 35.
Rdc1 Qb6 36.Qc2 Qb7 37.Rd1 Qc8 38.Kg2 Qg4 39.Re1 f5 40.exf5 gxf5 41.Rbd1 
f4 42.Rd3 fxg3 43.fxg3 c4 44.Rf3 cxb3 45.Rxb3 Rd4 46.Rd3 Qg6 47.Rxe5 dxe5 
48.Rd2 Qxc2 49.Rxc2 Rxd5 50.Kf3 Kf6 51.Ke3 Ra5 52.Rf2+ Ke6 53.Rd2 Ra3+ 54.
Kf2 Kf5 55.Rb2 Rc3 56.Rb7 e6 57.Rb4 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.21"]
[Round "6"]
[White "Ligterink, Gert"]
[Black "Hresc, Vladimir"]
[Result "1/2-1/2"]
[WhiteElo "2430"]
[BlackElo "2450"]
[ECO "D36"]
[EventDate "1983.07.15"]
[PlyCount "79"]

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 Nbd7 6.e3 Be7 7.Bd3 O-O 8.Nf3 
Re8 9.O-O c6 10.Qc2 Nf8 11.a3 a5 12.Rae1 g6 13.Ne5 Ne6 14.f4 c5 15.Bxf6 
Bxf6 16.f5 Nf8 17.fxg6 hxg6 18.Rxf6 Qxf6 19.Rf1 Qg5 20.Nxd5 Rxe5 21.dxe5 
Qxe5 22.Qxc5 Kg7 23.Qc7 Nd7 24.Bc4 Rb8 25.Qxa5 b5 26.Ba2 Qxb2 27.Nc3 f5 
28.Qc7 Qxa3 29.Be6 Qc5 30.Qxc5 Nxc5 31.Bxc8 Rxc8 32.Nxb5 Re8 33.Kf2 Ne4+ 
34.Kg1 Nd2 35.Re1 Nc4 36.Kf2 Ne5 37.Re2 Ng4+ 38.Kg3 Kf6 39.Nd4 Rxe3+ 40.
Rxe3 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.21"]
[Round "6"]
[White "Van Baarle, John"]
[Black "Vogel, Jaap"]
[Result "0-1"]
[WhiteElo "2345"]
[BlackElo "2325"]
[ECO "E14"]
[EventDate "1983.07.15"]
[PlyCount "72"]

1.c4 Nf6 2.d4 e6 3.Nf3 b6 4.e3 Bb4+ 5.Bd2 Be7 6.Nc3 Bb7 7.Bd3 d5 8.cxd5 
exd5 9.O-O O-O 10.Rc1 c5 11.b3 Nbd7 12.Qe2 Bd6 13.Nb5 Bb8 14.Rfd1 a6 15.
Nc3 Re8 16.Na4 c4 17.Bc2 b5 18.Nc3 b4 19.Nxd5 Nxd5 20.bxc4 Nf4 21.Qf1 Nh3+
22.Kh1 Bxf3 23.gxf3 Qh4 24.Be1 Bxh2 25.Bf5 Ng5 26.Qg2 Bc7+ 27.Kg1 Nf6 28.
f4 Bxf4 29.d5 g6 30.Bb1 Rxe3 31.fxe3 Bxe3+ 32.Kf1 Qf4+ 33.Bf2 Bxc1 34.d6 
Rd8 35.c5 Ng4 36.Rd4 Ne3+ 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.21"]
[Round "6"]
[White "Johansen, Darryl"]
[Black "Van Mil, Johannes"]
[Result "0-1"]
[WhiteElo "2485"]
[BlackElo "2340"]
[ECO "A87"]
[EventDate "1983.07.15"]
[PlyCount "83"]

1.c4 f5 2.d4 d6 3.Nc3 Nf6 4.Nf3 g6 5.g3 Bg7 6.Bg2 O-O 7.O-O Qe8 8.d5 Na6 
9.Nd4 Bd7 10.Re1 c6 11.e4 fxe4 12.Nxe4 Nxe4 13.Bxe4 Nc7 14.Be3 c5 15.Ne2 
b5 16.cxb5 Bf5 17.Bg2 Qxb5 18.b3 Bxa1 19.Qxa1 Qb4 20.Rc1 a5 21.Rc4 Qb8 22.
Bh6 Rf7 23.g4 Bd7 24.Qb2 a4 25.Rf4 Qe8 26.h4 axb3 27.axb3 Rb8 28.Qc3 e5 
29.dxe6 Qxe6 30.Rxf7 Qxf7 31.Nf4 Rxb3 32.Qa1 Bc8 33.Nd5 Ne8 34.Qc1 Be6 35.
Nf4 Nc7 36.Nxe6 Qxe6 37.Qa1 Qe5 38.Qa2 c4 39.f4 Qe3+ 40.Kh1 Qe1+ 41.Kh2 
Qg3+ 42.Kh1 0-1

[Event "2nd OHRA Open"]
[Site "Arnhem NED"]
[Date "1983.07.21"]
[Round "6"]
[White "De Roode, Peter"]
[Black "Grooten, Herman"]
[Result "1-0"]
[WhiteElo "2250"]
[BlackElo "2340"]
[ECO "A31"]
[EventDate "1983.07.15"]
[PlyCount "71"]

1.c4 c5 2.Nf3 Nf6 3.Nc3 b6 4.d4 cxd4 5.Nxd4 Bb7 6.f3 e6 7.e4 d6 8.Be2 Nbd7
9.O-O a6 10.Be3 Be7 11.Rc1 O-O 12.Qe1 Qb8 13.Qf2 Bd8 14.Rfd1 Bc7 15.g3 Kh8
16.b4 Rg8 17.Nb3 g5 18.c5 bxc5 19.bxc5 dxc5 20.Nxc5 Nxc5 21.Bxc5 Be5 22.
Bd4 Rg6 23.Rb1 Bxd4 24.Rxd4 Ra7 25.e5 Ne8 26.Rd7 g4 27.Bd3 Rg7 28.Qd4 Rg8 
29.Rxf7 Ng7 30.Rbxb7 Rxb7 31.Qe4 Qa7+ 32.Kf1 Nf5 33.Qxb7 Ne3+ 34.Kg1 Qxb7 
35.Rxb7 Rc8 36.Ne4 1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.23"]
[Round "7"]
[White "Chandler, Murray Graham"]
[Black "Sax, Gyula"]
[Result "1/2-1/2"]
[WhiteElo "2485"]
[BlackElo "2570"]
[ECO "B70"]
[EventDate "1983.07.15"]
[PlyCount "31"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 g6 7.O-O Bg7 8.Bg5 
Nc6 9.Nb3 b5 10.a3 O-O 11.f4 Be6 12.Kh1 Rc8 13.Qe1 b4 14.axb4 Nxb4 15.Nd4 
Bc4 16.Rd1 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.23"]
[Round "7"]
[White "Hort, Vlastimil"]
[Black "Timman, Jan"]
[Result "1/2-1/2"]
[WhiteElo "2595"]
[BlackElo "2605"]
[ECO "E51"]
[EventDate "1983.07.15"]
[PlyCount "132"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Nf3 Nc6 6.Bd2 cxd4 7.Nxd4 O-O 8.Be2 
d5 9.cxd5 Nxd4 10.exd4 exd5 11.O-O Bf5 12.Qb3 Be7 13.Rfe1 Be6 14.Rac1 Qb6 
15.Qxb6 axb6 16.a3 Rfc8 17.Bf4 Rc6 18.Bb5 Rcc8 19.Bd3 Rc6 20.Rc2 Bd6 21.
Bxd6 Rxd6 22.Rec1 Bd7 23.f3 Kf8 24.Kf2 Rc8 25.g4 g6 26.Na2 Rxc2+ 27.Rxc2 
Bc6 28.b4 Ne8 29.b5 Bd7 30.Nb4 Be6 31.a4 Rd8 32.Rc3 Ke7 33.Bc2 Kd6 34.Bb3 
Nf6 35.Rc1 g5 36.Nd3 h5 37.h3 Rh8 38.Kg3 Nd7 39.f4 gxf4+ 40.Kxf4 hxg4 41.
hxg4 Rh3 42.Bc2 Nf6 43.Rg1 Rh2 44.Bb1 Ne4 45.Ne5 Nc3 46.Nf3 Re2 47.Bd3 
Re4+ 48.Kg5 f6+ 49.Kg6 Rxg4+ 50.Rxg4 Bxg4 51.Nh4 Ne4 52.Bc2 Ke7 53.Ng2 Nd2
54.Ne3 Be6 55.Bd1 Ne4 56.Bc2 Nc3 57.Bd3 Nxa4 58.Nd1 Bf7+ 59.Kh6 Be8 60.Be2
Ke6 61.Bf1 Nc5 62.dxc5 bxc5 63.Ne3 Ke5 64.b6 c4 65.Bxc4 dxc4 66.Nxc4+ Kd5 
1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.23"]
[Round "7"]
[White "Van der Sterren, Paul"]
[Black "Henley, Ron"]
[Result "1-0"]
[WhiteElo "2445"]
[BlackElo "2525"]
[ECO "C76"]
[EventDate "1983.07.15"]
[PlyCount "93"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 g6 4.c3 a6 5.Ba4 d6 6.d4 Bd7 7.O-O Bg7 8.Re1 Nge7 
9.dxe5 dxe5 10.Nbd2 O-O 11.Nf1 h6 12.Qe2 Nc8 13.Bc2 Be6 14.Be3 Qe7 15.h3 
Rd8 16.N3d2 Nb8 17.Nb3 b6 18.Nfd2 Nd6 19.a4 a5 20.Bd3 Nd7 21.Nc4 Nf8 22.
Nbd2 Nxc4 23.Bxc4 h5 24.Red1 Rd6 25.Bxe6 Qxe6 26.b3 Kh7 27.Nc4 Rxd1+ 28.
Rxd1 Bh6 29.Bxh6 Kxh6 30.Rd5 f6 31.Ne3 Qc6 32.Qd2 Kg7 33.g4 hxg4 34.Nxg4 
g5 35.h4 Qe6 36.Ne3 Qh3 37.hxg5 Ne6 38.Nf5+ Kg6 39.Rd3 Qg4+ 40.Rg3 Qxe4 
41.Ne7+ Kf7 42.Nc8 Nf8 43.Qd8 Qe1+ 44.Kg2 Qe4+ 45.Kh2 Qh7+ 46.Rh3 Qf5 47.
Qxc7+ 1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.23"]
[Round "7"]
[White "Seirawan, Yasser"]
[Black "Boersma, Paulus"]
[Result "1/2-1/2"]
[WhiteElo "2605"]
[BlackElo "2355"]
[ECO "E73"]
[EventDate "1983.07.15"]
[PlyCount "52"]

1.c4 Nf6 2.Nc3 g6 3.e4 d6 4.d4 Bg7 5.Be2 O-O 6.Bg5 Nbd7 7.Qd2 c6 8.Nf3 d5 
9.cxd5 cxd5 10.e5 Ne4 11.Qe3 Nxg5 12.Qxg5 Nb8 13.b4 a6 14.O-O Nc6 15.a3 h6
16.Qe3 Bg4 17.Nd2 Nxe5 18.dxe5 d4 19.Qf4 dxc3 20.Bxg4 Qxd2 21.Qxd2 cxd2 
22.Ra2 Rad8 23.Rd1 Bxe5 24.Raxd2 Rxd2 25.Rxd2 Bd6 26.Rc2 b6 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.23"]
[Round "7"]
[White "Lobron, Eric"]
[Black "Short, Nigel David"]
[Result "1/2-1/2"]
[WhiteElo "2480"]
[BlackElo "2475"]
[ECO "C93"]
[EventDate "1983.07.15"]
[PlyCount "66"]

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 Ne7 17.Be3 Ng6 18.Qd2 Nh7 19.a4 Be7 20.Nf5 Bxf5 21.exf5 Nh4 22.Nxh4 
Bxh4 23.f6 Bxf6 24.axb5 axb5 25.Rxa8 Qxa8 26.Bxh6 gxh6 27.Qxh6 e4 28.Bxe4 
Ng5 29.Qxf6 Nxe4 30.Rxe4 Rxe4 31.Qg5+ Kf8 32.Qh6+ Ke7 33.Qg5+ Kf8 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.23"]
[Round "7"]
[White "Borm, Franciscus"]
[Black "Ree, Hans"]
[Result "1/2-1/2"]
[WhiteElo "2355"]
[BlackElo "2500"]
[ECO "B85"]
[EventDate "1983.07.15"]
[PlyCount "49"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Be2 Be7 7.O-O O-O 8.f4 a6
9.Be3 Nc6 10.Qe1 Nxd4 11.Bxd4 b5 12.Bd3 Bb7 13.Kh1 Qc7 14.e5 dxe5 15.fxe5 
Nd7 16.Ne4 Rad8 17.Qe3 Bxe4 18.Bxe4 Bc5 19.c3 Bxd4 20.cxd4 f5 21.exf6 Nxf6
22.Bf3 Qd6 23.a4 bxa4 24.Rxa4 Rb8 25.Rfa1 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.23"]
[Round "7"]
[White "Sunye Neto, Jaime"]
[Black "Van der Wiel, John"]
[Result "1-0"]
[WhiteElo "2490"]
[BlackElo "2515"]
[ECO "B38"]
[EventDate "1983.07.15"]
[PlyCount "105"]

1.c4 c5 2.Nc3 g6 3.Nf3 Bg7 4.d4 cxd4 5.Nxd4 Nc6 6.Nb3 Nf6 7.e4 O-O 8.Be2 
a5 9.a4 d6 10.O-O b6 11.Be3 Nd7 12.Nd4 Nxd4 13.Bxd4 Nc5 14.Bxg7 Kxg7 15.f4
Bb7 16.Qd4+ f6 17.Qe3 e5 18.f5 Bc6 19.Bd1 Ra7 20.Bc2 Kg8 21.Rad1 Rg7 22.
Rf2 Qd7 23.fxg6 hxg6 24.Rfd2 f5 25.Rxd6 Qe8 26.Nd5 Bxd5 27.R6xd5 fxe4 28.
Bxe4 Nxe4 29.Qxe4 Qxa4 30.Rd8 Qb4 31.Qxe5 Rf7 32.Rxf8+ Qxf8 33.h3 Kh7 34.
Rd4 Qe7 35.Qxe7 Rxe7 36.Kf2 Rc7 37.Ke3 Rc5 38.b3 a4 39.bxa4 Ra5 40.Rd6 
Rxa4 41.Kd3 Ra3+ 42.Kd4 Rb3 43.Rd5 Rg3 44.Rb5 Rxg2 45.Rxb6 Rd2+ 46.Ke5 
Re2+ 47.Kd6 Rd2+ 48.Kc6 Rd3 49.c5 Rxh3 50.Kb7 Kh6 51.c6 Kg5 52.c7 Rh7 53.
Kc6 1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.23"]
[Round "7"]
[White "Vogel, Jaap"]
[Black "De Boer, Gert Jan"]
[Result "1-0"]
[WhiteElo "2325"]
[BlackElo "2330"]
[ECO "D73"]
[EventDate "1983.07.15"]
[PlyCount "95"]

1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.d4 d5 5.c4 dxc4 6.Na3 c3 7.bxc3 c5 8.Ne5 
Nfd7 9.Nac4 Nxe5 10.Nxe5 cxd4 11.Qa4+ Bd7 12.Nxd7 Qxd7 13.Qxd7+ Nxd7 14.
cxd4 Bxd4 15.Rb1 Bb6 16.O-O Nc5 17.Bh6 e6 18.Bg7 Rg8 19.Bf6 Rc8 20.Rfc1 
Rb8 21.a4 Nd7 22.Bc3 Ke7 23.Bb4+ Kf6 24.a5 Bd8 25.Rd1 Nf8 26.Bd6 Rc8 27.
Rxb7 Bxa5 28.Rxa7 Bb6 29.Rb7 Bc5 30.Bc7 Be7 31.f4 Kg7 32.e4 h5 33.Be5+ Bf6
34.Bxf6+ Kxf6 35.e5+ Kg7 36.Bh3 Re8 37.Ra1 Nh7 38.Raa7 Rgf8 39.Kf2 g5 40.
Ke3 Kg6 41.Bf1 gxf4+ 42.gxf4 Kg7 43.Bd3 Rb8 44.Rxb8 Rxb8 45.Bxh7 Kxh7 46.
Rxf7+ Kg8 47.Rf6 Rb6 48.Kf3 1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.23"]
[Round "7"]
[White "Lengyel, Bela"]
[Black "Bohm, Hans"]
[Result "0-1"]
[WhiteElo "2315"]
[BlackElo "2390"]
[ECO "C19"]
[EventDate "1983.07.15"]
[PlyCount "78"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 Ne7 5.Nf3 c5 6.a3 Bxc3+ 7.bxc3 Bd7 8.a4 Qa5
9.Bd2 Nbc6 10.Be2 f6 11.O-O O-O-O 12.c4 Qc7 13.cxd5 Nxd5 14.c4 Ndb4 15.Qb3
a5 16.exf6 gxf6 17.d5 Ne7 18.Bc3 e5 19.Rfd1 Nf5 20.Bf1 h5 21.Re1 Rhg8 22.
Bd2 Rg7 23.Kh1 Rdg8 24.Re2 Rg4 25.Bxb4 axb4 26.a5 Kb8 27.Qb1 Bc8 28.a6 b6 
29.h3 Rf4 30.Ne1 Ng3+ 31.Kg1 Nxe2+ 32.Bxe2 Ka7 33.d6 Qg7 34.Qd3 Be6 35.Qe3
h4 36.Rd1 Qd7 37.Bf3 Bxh3 38.Bb7 Be6 39.Nf3 Bxc4 0-1

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.23"]
[Round "7"]
[White "Murey, Jacob"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[WhiteElo "2485"]
[BlackElo "2430"]
[ECO "A86"]
[EventDate "1983.07.15"]
[PlyCount "78"]

1.d4 d6 2.c4 f5 3.g3 Nf6 4.Bg2 g6 5.Nc3 Bg7 6.Bf4 O-O 7.Qd2 e6 8.Nf3 Qe7 
9.O-O Nbd7 10.Bg5 Qf7 11.Ne1 c6 12.e4 e5 13.exf5 gxf5 14.dxe5 dxe5 15.Bh6 
Bxh6 16.Qxh6 Re8 17.Qg5+ Qg6 18.f4 Nc5 19.Nf3 Qxg5 20.fxg5 Nh5 21.Rad1 a5 
22.Rfe1 e4 23.Nd4 Ng7 24.b3 Be6 25.Rf1 Rad8 26.Bh3 e3 27.Bg2 Bf7 28.Nxf5 
Nxf5 29.Rxd8 Rxd8 30.Rxf5 Rd3 31.Rxc5 Rxc3 32.Bf1 Bh5 33.Re5 Bf3 34.h3 b6 
35.g4 Kg7 36.Re6 Kg8 37.Re7 Kf8 38.Re5 Kg7 39.Re6 Kg8 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.23"]
[Round "7"]
[White "Ligterink, Gert"]
[Black "Franco Ocampos, Zenon"]
[Result "0-1"]
[WhiteElo "2430"]
[BlackElo "2495"]
[ECO "A63"]
[EventDate "1983.07.15"]
[PlyCount "108"]

1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 exd5 5.cxd5 g6 6.Nc3 d6 7.g3 Bg7 8.Bg2 O-O 
9.O-O a6 10.a4 Nbd7 11.e4 Re8 12.Re1 Ng4 13.Nh4 Nf8 14.h3 Ne5 15.f4 Nc4 
16.Bf1 Na5 17.Nf3 c4 18.Be3 Bxc3 19.bxc3 Rxe4 20.Nd2 Re8 21.Rb1 b5 22.axb5
Bf5 23.Rb4 axb5 24.Bd4 Qd7 25.g4 Bd3 26.Bxd3 cxd3 27.Ne4 Rxe4 28.Rxe4 Nc4 
29.Qxd3 Ra1+ 30.Kh2 f5 31.Re2 fxg4 32.Qe4 gxh3 33.Rb1 Ra4 34.Rg1 Qf7 35.
Kxh3 Nb6 36.f5 Nxd5 37.Qf3 b4 38.c4 Ra3 39.Be3 Nxe3 40.Rxe3 Rxe3 41.Qxe3 
Qxf5+ 42.Kg3 Ne6 43.Re1 Ng7 44.Qf3 Qg5+ 45.Kf2 Qh4+ 46.Qg3 Qd4+ 47.Kg2 Nf5
48.Qh3 Qd2+ 49.Kf1 Kg7 50.Qf3 h5 51.Ra1 b3 52.Rb1 Nd4 53.Qe4 Kh6 54.Re1 b2
0-1

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.23"]
[Round "7"]
[White "Hresc, Vladimir"]
[Black "Langeweg, Christian"]
[Result "0-1"]
[WhiteElo "2450"]
[BlackElo "2420"]
[ECO "B22"]
[EventDate "1983.07.15"]
[PlyCount "76"]

1.e4 c5 2.c3 d5 3.exd5 Qxd5 4.d4 Nc6 5.Nf3 e6 6.Be2 Nf6 7.O-O cxd4 8.Nxd4 
Nxd4 9.cxd4 Be7 10.Nc3 Qd6 11.Bf3 O-O 12.Rb1 Rd8 13.Be3 Nd5 14.Nxd5 exd5 
15.Qb3 b6 16.Rbc1 a5 17.Rfe1 Ba6 18.g3 a4 19.Qxa4 Be2 20.Qxa8 Rxa8 21.Rxe2
g5 22.a3 Qd7 23.Rec2 Qf5 24.Be2 g4 25.Rc6 Bg5 26.Rxb6 Bxe3 27.fxe3 Re8 28.
Rb3 Qg5 29.Kf2 Re6 30.a4 Rh6 31.a5 Rxh2+ 32.Ke1 Qf6 33.Kd1 Qf2 34.Rc2 Rh1+
35.Kd2 Qe1+ 36.Kd3 Qxa5 37.Bxg4 Qa6+ 38.Kc3 Qc4+ 0-1

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.23"]
[Round "7"]
[White "Berg, Klaus"]
[Black "De Roode, Peter"]
[Result "0-1"]
[WhiteElo "2400"]
[BlackElo "2250"]
[ECO "E97"]
[EventDate "1983.07.15"]
[PlyCount "81"]

1.c4 Nf6 2.Nc3 g6 3.e4 d6 4.d4 Bg7 5.Be2 O-O 6.Nf3 e5 7.O-O Nc6 8.d5 Ne7 
9.Nd2 a5 10.Rb1 Ne8 11.a3 f5 12.b4 axb4 13.axb4 Nf6 14.f3 Bh6 15.c5 Be3+ 
16.Kh1 dxc5 17.Qb3 Kg7 18.Nc4 Bd4 19.bxc5 fxe4 20.fxe4 Ng4 21.Bg5 Rxf1+ 
22.Rxf1 Nf2+ 23.Rxf2 Bxf2 24.d6 Bxc5 25.Bxe7 Qg8 26.Nd1 Bxd6 27.Bxd6 cxd6 
28.Qb6 Ra2 29.Ncb2 Qf8 30.h3 Ra3 31.Nc4 Ra2 32.Ndb2 Ra1+ 33.Bd1 Ra6 34.
Qc7+ Kh6 35.Nb6 Be6 36.Qxb7 Qf1+ 37.Kh2 Ra2 38.N6a4 Ra3 39.Bf3 Rxf3 40.Qe7
Rf6 41.Qxd6 0-1

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.23"]
[Round "7"]
[White "Van der Vliet, Fredrik"]
[Black "Johansen, Darryl"]
[Result "0-1"]
[WhiteElo "2345"]
[BlackElo "2485"]
[ECO "A58"]
[EventDate "1983.07.15"]
[PlyCount "62"]

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.g3 d6 7.Bg2 g6 8.b3 Bg7 
9.Bb2 O-O 10.Nh3 Nbd7 11.O-O Qb8 12.Bc3 Nb6 13.Re1 c4 14.e4 cxb3 15.axb3 
Rc8 16.Ra2 Nbd7 17.Nf4 Qb7 18.Ne2 Bxe2 19.Raxe2 Rab8 20.Bh3 Rc5 21.b4 Rc4 
22.Re3 Bh6 23.f4 Qa7 24.Kh1 Rc7 25.Rd3 Nb6 26.e5 Nh5 27.f5 Na4 28.fxg6 
hxg6 29.Qg4 Nxc3 30.Nxc3 dxe5 31.Rxe5 Rxc3 0-1

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.23"]
[Round "7"]
[White "Van Mil, Johannes"]
[Black "Kuijf, Marinus"]
[Result "0-1"]
[WhiteElo "2340"]
[BlackElo "2420"]
[ECO "B25"]
[EventDate "1983.07.15"]
[PlyCount "100"]

1.f4 c5 2.g3 Nc6 3.Bg2 g6 4.Nf3 Bg7 5.O-O d6 6.d3 e6 7.Nc3 Nge7 8.e4 O-O 
9.Be3 Rb8 10.Qd2 b5 11.e5 Nf5 12.Bf2 Ncd4 13.Ne4 Bb7 14.c3 Nxf3+ 15.Bxf3 
Re8 16.Qe2 dxe5 17.fxe5 Bxe5 18.Bxc5 a6 19.a4 Rc8 20.d4 Bc6 21.Qf2 Bb8 22.
axb5 Bxb5 23.Rfd1 Bc4 24.Nd2 Bd3 25.Bb7 e5 26.Bxc8 Qxc8 27.Nf1 Bb5 28.Re1 
Bc6 29.Rad1 exd4 30.cxd4 Bd5 31.Ne3 Nxe3 32.Rxe3 Rxe3 33.Qxe3 h5 34.Re1 
Kh7 35.Qg5 Bc4 36.Qe7 Qf5 37.Qe4 Qg5 38.Bb4 Bd5 39.Qe3 Qg4 40.Bd2 Kg8 41.
Qf2 Ba7 42.Bf4 f6 43.Qe3 Qd7 44.h4 Bc6 45.Kh2 Bxd4 46.Qb3+ Kg7 47.Qb4 Kf7 
48.Qc4+ Kg7 49.Rd1 Qg4 50.Qxd4 Qe2+ 0-1

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.23"]
[Round "7"]
[White "Grooten, Herman"]
[Black "Van Baarle, John"]
[Result "0-1"]
[WhiteElo "2340"]
[BlackElo "2345"]
[ECO "D36"]
[EventDate "1983.07.15"]
[PlyCount "62"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Bg5 Be7 5.Nc3 O-O 6.e3 Nbd7 7.Qc2 h6 8.Bf4 c6 
9.cxd5 exd5 10.O-O-O b5 11.Kb1 Qa5 12.Bd3 b4 13.Ne2 c5 14.dxc5 Nxc5 15.
Ned4 Nxd3 16.Nc6 Qc5 17.Nxe7+ Qxe7 18.Qxd3 a5 19.Nd4 Ba6 20.Qf5 a4 21.f3 
a3 22.b3 Rac8 23.Qh3 Rc3 24.Nf5 Qe6 25.g4 Rfc8 26.Nd4 Qb6 27.Rhg1 Qc5 28.
e4 Bd3+ 29.Rxd3 Rxd3 30.g5 Rxd4 31.Rc1 Rd1 0-1

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.24"]
[Round "8"]
[White "Sax, Gyula"]
[Black "Hort, Vlastimil"]
[Result "1/2-1/2"]
[WhiteElo "2570"]
[BlackElo "2595"]
[ECO "B10"]
[EventDate "1983.07.15"]
[PlyCount "49"]

1.e4 c6 2.c4 e5 3.d4 d6 4.Nc3 Be7 5.Nf3 Bg4 6.dxe5 Bxf3 7.gxf3 dxe5 8.
Qxd8+ Bxd8 9.f4 Nd7 10.Rg1 Bc7 11.Bh3 Ngf6 12.Rxg7 exf4 13.Rg5 Ne5 14.Kf1 
Ng6 15.Rf5 Ng8 16.b3 N8e7 17.Rh5 Rd8 18.Ba3 Be5 19.Rc1 f6 20.Bg4 O-O 21.
Rh3 Rd2 22.Rd1 Rfd8 23.Ke1 Rxd1+ 24.Nxd1 b6 25.Nc3 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.24"]
[Round "8"]
[White "Chandler, Murray Graham"]
[Black "Lobron, Eric"]
[Result "1-0"]
[WhiteElo "2485"]
[BlackElo "2480"]
[ECO "B19"]
[EventDate "1983.07.15"]
[PlyCount "113"]

1.e4 c6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.h4 h6 7.Nf3 Nd7 8.h5 Bh7
9.Bd3 Bxd3 10.Qxd3 e6 11.Bd2 Ngf6 12.O-O-O Be7 13.Ne4 O-O 14.Nxf6+ Nxf6 
15.Kb1 c5 16.g4 Nxg4 17.Rhg1 f5 18.Rde1 Qd5 19.c4 Qd6 20.d5 exd5 21.Bf4 
Qd7 22.Ne5 Nxe5 23.Rxe5 Bf6 24.Rxd5 Qe8 25.Bd6 Rf7 26.Bxc5 Rc8 27.Be3 Qe6 
28.b3 Bg5 29.f4 Bf6 30.Rxf5 Re8 31.Bc1 Qe2 32.Qxe2 Rxe2 33.Rd5 Rh2 34.Re1 
Kf8 35.Bd2 Kg8 36.Kc2 Kh7 37.b4 Rc7 38.Kb3 Rh3+ 39.Re3 Rh1 40.c5 Rb1+ 41.
Kc4 b6 42.a4 Ra1 43.a5 bxa5 44.bxa5 Ra2 45.Re6 Kg8 46.c6 Kf7 47.f5 a6 48.
Kc5 Rb2 49.Bf4 Be7+ 50.Kd4 Rb4+ 51.Ke3 Bg5 52.Bxg5 hxg5 53.Rd7+ Rxd7 54.
cxd7 Rb8 55.Rxa6 Ke7 56.Rg6 Rb3+ 57.Kd4 1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.24"]
[Round "8"]
[White "Short, Nigel David"]
[Black "Timman, Jan"]
[Result "1/2-1/2"]
[WhiteElo "2475"]
[BlackElo "2605"]
[ECO "C88"]
[EventDate "1983.07.15"]
[PlyCount "165"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.a4 b4 
9.d3 d6 10.Nbd2 Bg4 11.h3 Bh5 12.c3 Rb8 13.Bc4 Qc8 14.a5 Rd8 15.Nf1 bxc3 
16.bxc3 d5 17.exd5 Nxd5 18.Bd2 f6 19.Ng3 Bf7 20.Qa4 Qb7 21.Kh2 Bf8 22.Rab1
Qa8 23.Rxb8 Rxb8 24.Nf5 Nce7 25.Nxe7+ Bxe7 26.d4 exd4 27.Nxd4 Rb2 28.Nf5 
Bf8 29.Re2 c6 30.Nd4 c5 31.Nf5 Qb7 32.Ne3 h5 33.h4 g6 34.g3 Nxe3 35.fxe3 
Kh7 36.e4 Bxc4 37.Qxc4 Qb3 38.Qd3 c4 39.Qd7+ Bg7 40.Rf2 Qd1 41.Rg2 Rb1 42.
g4 Qh1+ 43.Kg3 Rg1 44.Rxg1 Qxg1+ 45.Kh3 Qh1+ 46.Kg3 Qxe4 47.gxh5 Qe5+ 48.
Kg2 Qxh5 49.Qe6 Qd1 50.Be1 f5 51.Bf2 Qg4+ 52.Kf1 Qh3+ 53.Kg1 Qxc3 54.Qxa6 
Qc1+ 55.Kg2 c3 56.Qc4 c2 57.a6 Qd2 58.a7 c1=Q 59.Qxc1 Qxc1 60.a8=Q Qf4 61.
Qf3 Qxf3+ 62.Kxf3 Kh6 63.Be3+ Kh5 64.Bg5 Be5 65.Be7 Kh6 66.Bg5+ Kg7 67.Be3
Kf7 68.Bd2 Ke6 69.Be3 Kd5 70.Bg5 Kd4 71.Be3+ Kd3 72.Bg5 Bd6 73.Bf6 Kd2 74.
Kf2 Bf4 75.Be7 Be3+ 76.Kf3 Bh6 77.Kf2 Kd3 78.Kf3 Kd4 79.Bd6 Bg7 80.Be7 Ke5
81.Bg5 Bf6 82.Bxf6+ Kxf6 83.Kf4 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.24"]
[Round "8"]
[White "Kuijf, Marinus"]
[Black "Henley, Ron"]
[Result "1/2-1/2"]
[WhiteElo "2420"]
[BlackElo "2525"]
[ECO "C07"]
[EventDate "1983.07.15"]
[PlyCount "123"]

1.e4 e6 2.d4 d5 3.Nd2 a6 4.Bd3 c5 5.dxc5 Bxc5 6.Ngf3 Nc6 7.a3 Nf6 8.O-O 
Ba7 9.exd5 exd5 10.Re1+ Be6 11.Nb3 O-O 12.Be3 Bg4 13.Bxa7 Rxa7 14.h3 Bh5 
15.Be2 Qb6 16.Nfd4 Bg6 17.a4 Bxc2 18.Qxc2 Nxd4 19.Nxd4 Qxd4 20.Bf3 Qb4 21.
Red1 Rd8 22.a5 Raa8 23.Ra4 Qb5 24.Be2 Qd7 25.Rad4 Rac8 26.Qd2 h6 27.Bf3 
Qf5 28.Rd3 Rc5 29.g4 Qc8 30.Rd4 Qc7 31.h4 Re8 32.b4 Rc2 33.Qf4 Qxf4 34.
Rxf4 Re5 35.Rfd4 Kf8 36.Kg2 Ke7 37.Kg3 Ke6 38.R1d3 g5 39.hxg5 hxg5 40.Bg2 
Rb2 41.Bh1 Rbe2 42.b5 axb5 43.Rb4 Ne4+ 44.Bxe4 dxe4 45.Rdb3 e3 46.Rxb5 
Rxb5 47.Rxb5 exf2 48.Kg2 Re4 49.Rxg5 Re5 50.Rh5 Kf6 51.Kxf2 Rxh5 52.gxh5 
Kg5 53.Ke3 Kxh5 54.Kd4 f5 55.Kc5 f4 56.Kb6 f3 57.Kxb7 f2 58.a6 f1=B 59.a7 
Bg2+ 60.Kb8 Kg6 61.a8=B Bxa8 62.Kxa8 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.24"]
[Round "8"]
[White "Van der Wiel, John"]
[Black "Franco Ocampos, Zenon"]
[Result "1-0"]
[WhiteElo "2515"]
[BlackElo "2495"]
[ECO "B60"]
[EventDate "1983.07.15"]
[PlyCount "41"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Bg5 Bd7 7.Nb3 a6 8.f4 b5
9.Bxf6 gxf6 10.Qh5 Rc8 11.O-O-O Na5 12.Nd4 Bg7 13.Nf5 Bxf5 14.exf5 Rc5 15.
Bd3 e5 16.Ne4 Rc6 17.fxe5 fxe5 18.f6 Bf8 19.Rhf1 Qc7 20.Ng5 Nc4 21.Be4 1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.24"]
[Round "8"]
[White "Ree, Hans"]
[Black "Van der Sterren, Paul"]
[Result "1/2-1/2"]
[WhiteElo "2500"]
[BlackElo "2445"]
[ECO "D36"]
[EventDate "1983.07.15"]
[PlyCount "57"]

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 Be7 6.e3 O-O 7.Bd3 Nbd7 8.Nf3 
c6 9.Qc2 Re8 10.O-O Nf8 11.a3 Ng6 12.Nh4 Ne4 13.Nxg6 hxg6 14.Bf4 Nxc3 15.
bxc3 c5 16.Bb5 Bf5 17.Qa4 Rf8 18.dxc5 Bxc5 19.Rfd1 a6 20.Be2 Be4 21.Bd3 
Qe7 22.Bxe4 b5 23.Qc2 dxe4 24.Rd5 Rfc8 25.Re5 Qf8 26.Qb3 Re8 27.Rxe8 Qxe8 
28.a4 Bf8 29.axb5 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.24"]
[Round "8"]
[White "Bohm, Hans"]
[Black "Seirawan, Yasser"]
[Result "0-1"]
[WhiteElo "2390"]
[BlackElo "2605"]
[ECO "D28"]
[EventDate "1983.07.15"]
[PlyCount "80"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 b5 8.Bd3 Bb7 
9.a4 b4 10.Nbd2 cxd4 11.exd4 Nc6 12.Ne4 Be7 13.Rd1 O-O 14.Nc5 Nxd4 15.Nxd4
Bxc5 16.Nxe6 fxe6 17.Bxh7+ Kxh7 18.Rxd8 Raxd8 19.Be3 Bxe3 20.Qxe3 Rd6 21.
Re1 Rfd8 22.f3 Kg6 23.Qc5 b3 24.h4 Bd5 25.Re5 Kf7 26.h5 Rc6 27.Qa7+ Rd7 
28.Qe3 Rc2 29.Rg5 Rxb2 30.Rxg7+ Kxg7 31.Qg5+ Kf7 32.Qg6+ Ke7 33.Qg7+ Kd6 
34.Qxf6 Rc2 35.Qf8+ Kc7 36.Qb4 b2 37.Kh2 Rg7 38.Kh3 Rgxg2 39.Qe7+ Kc6 40.
Qe8+ Kc5 0-1

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.24"]
[Round "8"]
[White "Langeweg, Christian"]
[Black "Sunye Neto, Jaime"]
[Result "1/2-1/2"]
[WhiteElo "2420"]
[BlackElo "2490"]
[ECO "E55"]
[EventDate "1983.07.15"]
[PlyCount "61"]

1.d4 Nf6 2.Nf3 e6 3.c4 b6 4.Nc3 Bb4 5.e3 O-O 6.Bd3 d5 7.O-O dxc4 8.Bxc4 
Bb7 9.Bd2 Nbd7 10.Qe2 c5 11.Rfd1 cxd4 12.Nxd4 a6 13.Be1 Qe7 14.Rac1 Rfc8 
15.Bb3 Bd6 16.f3 Rc7 17.Qd2 Be5 18.Nce2 Nc5 19.Bg3 Bxg3 20.Nxg3 g6 21.e4 
Rac8 22.Bc2 Ncd7 23.Bb3 Rxc1 24.Rxc1 Rxc1+ 25.Qxc1 Qb4 26.Nge2 Ne5 27.Qc3 
Qxc3 28.Nxc3 Nd3 29.Nd1 Nc1 30.Bc4 Nd7 31.Ne2 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.24"]
[Round "8"]
[White "Van Wijgerden, Cornelis"]
[Black "Lengyel, Bela"]
[Result "1-0"]
[WhiteElo "2430"]
[BlackElo "2315"]
[ECO "C56"]
[EventDate "1983.07.15"]
[PlyCount "77"]

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Bc4 Nf6 5.e5 d5 6.Bb5 Ne4 7.Nxd4 Bc5 8.Be3 
Bd7 9.Bxc6 bxc6 10.Nd2 Qe7 11.Nxe4 dxe4 12.e6 Bxe6 13.Nxe6 Bxe3 14.Nxg7+ 
Kf8 15.Nf5 Bxf2+ 16.Kxf2 Qg5 17.Ne3 Rd8 18.Qe2 Qf6+ 19.Kg1 Qxb2 20.Rd1 Rd6
21.g3 h5 22.Kg2 h4 23.Rhf1 Rh7 24.Rb1 hxg3 25.Rxb2 Rxh2+ 26.Kxg3 Rxe2 27.
Rb8+ Ke7 28.Nf5+ Ke6 29.Nxd6 cxd6 30.Rf2 Re1 31.Re8+ Kd5 32.Rxf7 Kd4 33.
Rf6 d5 34.Rxc6 Ke3 35.c4 Rg1+ 36.Kh2 Ra1 37.cxd5 Rxa2+ 38.Kg3 Rd2 39.d6 
1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.24"]
[Round "8"]
[White "Boersma, Paulus"]
[Black "Borm, Franciscus"]
[Result "1/2-1/2"]
[WhiteElo "2355"]
[BlackElo "2355"]
[ECO "A13"]
[EventDate "1983.07.15"]
[PlyCount "70"]

1.Nf3 Nf6 2.c4 e6 3.g3 d5 4.Bg2 c6 5.b3 Nbd7 6.O-O Bd6 7.Bb2 O-O 8.Nc3 e5 
9.cxd5 cxd5 10.Nb5 Bb8 11.Ba3 Re8 12.Nd6 Bxd6 13.Bxd6 Qb6 14.Ba3 e4 15.Ne1
Ne5 16.d4 Nc6 17.Nc2 Be6 18.Bc5 Qd8 19.a4 Qd7 20.Ne3 Bh3 21.a5 Bxg2 22.
Kxg2 h5 23.h4 Ng4 24.Qd2 Nd8 25.Ba3 Nxe3+ 26.Qxe3 Ne6 27.Bc1 g6 28.Qc3 Qb5
29.Qb2 Rac8 30.Be3 Rc6 31.Ra2 Rec8 32.Rc1 Rxc1 33.Bxc1 Nxd4 34.Qxd4 Rxc1 
35.Qxa7 Qxb3 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.24"]
[Round "8"]
[White "De Boer, Gert Jan"]
[Black "Grooten, Herman"]
[Result "1-0"]
[WhiteElo "2330"]
[BlackElo "2340"]
[ECO "E15"]
[EventDate "1983.07.15"]
[PlyCount "54"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.b3 Bb4+ 6.Bd2 Be7 7.Bg2 c6 8.Bc3 d5 
9.Nbd2 Nbd7 10.O-O Rc8 11.Re1 c5 12.e4 cxd4 13.Nxd4 e5 14.Nf5 d4 15.Bxd4 
exd4 16.e5 O-O 17.Nxe7+ Qxe7 18.exf6 Qxf6 19.Nf3 b5 20.cxb5 Bxb5 21.Qxd4 
Rfd8 22.Qxa7 Nc5 23.Qe7 Qb6 24.Ne5 Qf6 25.Qxf6 gxf6 26.Ng4 Nd3 27.Red1 f5 
1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.24"]
[Round "8"]
[White "Van Baarle, John"]
[Black "Berg, Klaus"]
[Result "1-0"]
[WhiteElo "2345"]
[BlackElo "2400"]
[ECO "B13"]
[EventDate "1983.07.15"]
[PlyCount "97"]

1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 Nc6 6.Nf3 Bg4 7.cxd5 Nxd5 8.Qb3
Bxf3 9.gxf3 e6 10.Qxb7 Nxd4 11.Bb5+ Nxb5 12.Qc6+ Ke7 13.Qxb5 Qd7 14.Nxd5+ 
Qxd5 15.Qxd5 exd5 16.Be3 Ke6 17.Rc1 Bd6 18.Ke2 Rhc8 19.h3 Be5 20.b3 Bb2 
21.Rxc8 Rxc8 22.Rb1 Ba3 23.Kd3 a5 24.Bd2 Bb4 25.Rc1 Rxc1 26.Bxc1 Kd6 27.
Bd2 Kc5 28.Bc1 Be1 29.Bb2 Kb4 30.Kc2 Bxf2 31.Bxg7 Ka3 32.Kb1 Kb4 33.Kb2 d4
34.Bf8+ Kb5 35.Kc2 Kc6 36.Kd3 Kd5 37.Bg7 f5 38.Bh6 Kc5 39.Bf8+ Kd5 40.Be7 
Be1 41.Bf6 Bc3 42.Bd8 Ke5 43.Bg5 Kd5 44.Bh6 Kc5 45.h4 Kd5 46.h5 Kc5 47.a3 
Bb2 48.Kc2 Bc3 49.Bd2 1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.24"]
[Round "8"]
[White "Johansen, Darryl"]
[Black "Vogel, Jaap"]
[Result "1/2-1/2"]
[WhiteElo "2485"]
[BlackElo "2325"]
[ECO "E18"]
[EventDate "1983.07.15"]
[PlyCount "98"]

1.c4 Nf6 2.g3 e6 3.Bg2 d5 4.Nf3 Be7 5.O-O O-O 6.d4 b6 7.Nc3 Bb7 8.Ne5 Qc8 
9.cxd5 exd5 10.Bg5 Qe6 11.Rc1 Na6 12.Nd3 c6 13.a3 Rfe8 14.b4 Ne4 15.Nf4 
Qd6 16.Bxe7 Rxe7 17.h4 Nc7 18.Qc2 Nxc3 19.Qxc3 a5 20.Ra1 Ree8 21.e3 axb4 
22.axb4 Ba6 23.Rfc1 Bc4 24.Bf1 b5 25.Nd3 h6 26.Nc5 Ne6 27.Bh3 Nc7 28.Bd7 
Rf8 29.Rxa8 Nxa8 30.Ra1 Nb6 31.Bg4 Qg6 32.Bd1 Rb8 33.Qc2 Qf6 34.Bg4 g6 35.
Ra6 h5 36.Bd1 Qd6 37.Qb1 Nd7 38.Qa1 Nf6 39.Bf3 Kg7 40.Ra7 Re8 41.Qa5 Rxe3 
42.Qc7 Re1+ 43.Kh2 Qxc7 44.Rxc7 Bf1 45.Rxc6 Be2 46.Kg2 Bf1+ 47.Kh2 Be2 48.
Kg2 Bf1+ 49.Kh2 Be2 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.24"]
[Round "8"]
[White "De Roode, Peter"]
[Black "Hresc, Vladimir"]
[Result "1/2-1/2"]
[WhiteElo "2250"]
[BlackElo "2450"]
[ECO "D37"]
[EventDate "1983.07.15"]
[PlyCount "83"]

1.c4 e6 2.Nc3 d5 3.d4 Nf6 4.Nf3 Be7 5.Bf4 O-O 6.e3 c5 7.dxc5 Bxc5 8.a3 Be7
9.Be2 dxc4 10.Qc2 Nd5 11.Bxc4 Nxf4 12.exf4 Qc7 13.Bd3 h6 14.g3 Nc6 15.O-O 
Bd7 16.Rac1 Qa5 17.Rfd1 Rfd8 18.Qe2 Rac8 19.Nd2 Be8 20.Nc4 Qc7 21.Qe4 g6 
22.Qe3 Bf6 23.Nb5 Qb8 24.Be4 Be7 25.Nc3 b5 26.Nd2 Na5 27.b4 Nc4 28.Nxc4 
Rxc4 29.Bf3 Bf6 30.Rxd8 Qxd8 31.Rd1 Qc7 32.Nd5 exd5 33.Qxe8+ Kg7 34.Bxd5 
Rd4 35.Rxd4 Bxd4 36.Qxb5 Qc1+ 37.Kg2 Qb2 38.Qf1 Qxa3 39.Bxf7 Qxb4 40.Ba2 
Qb7+ 41.Kh3 Qc8+ 42.Kg2 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.24"]
[Round "8"]
[White "Van der Vliet, Fredrik"]
[Black "Ligterink, Gert"]
[Result "1/2-1/2"]
[WhiteElo "2345"]
[BlackElo "2430"]
[ECO "E18"]
[EventDate "1983.07.15"]
[PlyCount "89"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.b3 Bb4+ 6.Bd2 Be7 7.Bg2 Bb7 8.Nc3 O-O
9.O-O Na6 10.Bc1 d5 11.Ne5 c5 12.Bb2 Rb8 13.cxd5 exd5 14.Rc1 Nc7 15.dxc5 
bxc5 16.Na4 Ne6 17.e3 Bd6 18.Re1 Qe7 19.Nd3 Ne4 20.f3 Nf6 21.e4 dxe4 22.
fxe4 Nd7 23.e5 Bc7 24.Bxb7 Rxb7 25.Nc3 Ba5 26.Nd5 Qd8 27.Re3 Nb6 28.Nxb6 
Bxb6 29.Rc4 Rd7 30.Qf1 Qg5 31.Qf3 Rfd8 32.Nf2 Nd4 33.Qe4 h5 34.Kg2 Ne6 35.
Rf3 Rd5 36.h4 Qe7 37.Rd3 Rxd3 38.Nxd3 Qd7 39.Nf2 Bc7 40.Rc2 Ba5 41.Rc1 Qd2
42.Rc2 Qd5 43.Kf3 Be1 44.Qxd5 Rxd5 45.Ne4 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.24"]
[Round "8"]
[White "Van Mil, Johannes"]
[Black "Murey, Jacob"]
[Result "0-1"]
[WhiteElo "2340"]
[BlackElo "2485"]
[ECO "C12"]
[EventDate "1983.07.15"]
[PlyCount "32"]

1.d4 Nf6 2.Nc3 d5 3.Bg5 e6 4.e4 Bb4 5.e5 h6 6.Be3 Ne4 7.Qg4 Kf8 8.a3 Bxc3+
9.bxc3 c5 10.Bd3 h5 11.Qf3 Nxc3 12.Nh3 Nc6 13.Nf4 Kg8 14.Nxh5 Qh4 15.g4 
Nxd4 16.Qf4 Bd7 0-1

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.25"]
[Round "9"]
[White "Timman, Jan"]
[Black "Chandler, Murray Graham"]
[Result "1/2-1/2"]
[WhiteElo "2605"]
[BlackElo "2485"]
[ECO "D34"]
[EventDate "1983.07.15"]
[PlyCount "73"]

1.d4 d5 2.c4 e6 3.Nf3 c5 4.cxd5 exd5 5.g3 Nc6 6.Bg2 Nf6 7.O-O Be7 8.Nc3 
O-O 9.Bg5 cxd4 10.Nxd4 h6 11.Be3 Re8 12.Rc1 Bg4 13.Nb3 Be6 14.Nb5 Qd7 15.
Bd4 Ne4 16.e3 Rac8 17.Nxa7 Nxa7 18.Bxa7 Ra8 19.Bd4 Rxa2 20.Nd2 Bf5 21.Nxe4
Bxe4 22.Qh5 Bf8 23.Rfd1 Qe7 24.Bxe4 dxe4 25.Rc2 Rea8 26.Qe5 Ra1 27.Rxa1 
Rxa1+ 28.Kg2 Qxe5 29.Bxe5 Ra5 30.Bd4 Bd6 31.Rc8+ Kh7 32.Re8 f5 33.h3 h5 
34.Bc3 Rb5 35.g4 fxg4 36.hxg4 Rg5 37.Rxe4 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.25"]
[Round "9"]
[White "Hort, Vlastimil"]
[Black "Lobron, Eric"]
[Result "1-0"]
[WhiteElo "2595"]
[BlackElo "2480"]
[ECO "B08"]
[EventDate "1983.07.15"]
[PlyCount "111"]

1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Be3 a6 5.a4 Nf6 6.Qd2 Nc6 7.h3 O-O 8.Nf3 e5 9.
d5 Ne7 10.g4 Bd7 11.a5 Qb8 12.Bg2 c6 13.dxc6 bxc6 14.O-O Re8 15.Rfe1 Nc8 
16.Nh2 h5 17.Bf3 hxg4 18.hxg4 Be6 19.g5 Nh5 20.Ng4 Bxg4 21.Bxg4 Nf4 22.Bd7
Rf8 23.Bxc6 Ra7 24.Nd5 Rc7 25.Nxc7 Qxc7 26.Bd5 Qd8 27.Bxf4 exf4 28.Qxf4 
Bxb2 29.Ra2 Bc3 30.Rd1 Kg7 31.Qe3 Bxa5 32.Qd4+ Kh7 33.Rd3 Qxg5+ 34.Kf1 
Qc1+ 35.Kg2 Qg5+ 36.Rg3 Bb6 37.Rxg5 Bxd4 38.Rxa6 Kh6 39.Rg3 Nb6 40.Bb3 f5 
41.exf5 Rxf5 42.Rh3+ Kg5 43.Rg3+ Kh5 44.Rh3+ Kg5 45.Rf3 Rb5 46.Rg3+ Kh6 
47.Rh3+ Kg5 48.Rg3+ Kh6 49.f4 g5 50.Rd3 Bc5 51.Rh3+ Kg6 52.c4 Rb4 53.Bc2+ 
Kg7 54.Ra7+ Kg8 55.Bh7+ Kf8 56.fxg5 1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.25"]
[Round "9"]
[White "Van der Sterren, Paul"]
[Black "Short, Nigel David"]
[Result "1-0"]
[WhiteElo "2445"]
[BlackElo "2475"]
[ECO "A64"]
[EventDate "1983.07.15"]
[PlyCount "75"]

1.d4 e6 2.Nf3 Nf6 3.c4 c5 4.d5 exd5 5.cxd5 d6 6.Nc3 g6 7.g3 Bg7 8.Bg2 O-O 
9.O-O a6 10.a4 Re8 11.Nd2 Nbd7 12.h3 Rb8 13.Nc4 Nb6 14.Na3 Bf5 15.g4 Bd7 
16.Bf4 Nc8 17.Qd3 Re7 18.Nc4 Be8 19.Qg3 Rd7 20.a5 Bf8 21.e4 b5 22.axb6 
Nxb6 23.Nxd6 Nfxd5 24.exd5 Bxd6 25.Rxa6 g5 26.Bxd6 Rxd6 27.Ne4 Rg6 28.Rd1 
Bb5 29.Ra7 Rc8 30.Nc3 Bd7 31.d6 Be6 32.Be4 Rh6 33.Nd5 Bxd5 34.Bxd5 Nd7 35.
Re1 Kh8 36.Re7 Nb6 37.Qe5+ f6 38.Qxf6+ 1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.25"]
[Round "9"]
[White "Kuijf, Marinus"]
[Black "Ree, Hans"]
[Result "0-1"]
[WhiteElo "2420"]
[BlackElo "2500"]
[ECO "C12"]
[EventDate "1983.07.15"]
[PlyCount "78"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.Ne2 dxe4 6.a3 Be7 7.Bxf6 gxf6 8.Nxe4
f5 9.N4c3 b6 10.Ng3 Bb7 11.Bb5+ c6 12.Bc4 Qd6 13.Qd3 Nd7 14.O-O-O O-O-O 
15.Rhe1 h5 16.Qe2 Qf4+ 17.Kb1 h4 18.Nf1 Nf6 19.g3 Qc7 20.Ne3 Bf8 21.Qf3 
Kb8 22.Bb3 Bh6 23.Nxf5 exf5 24.Qxf5 Rd6 25.Ne4 Nxe4 26.Rxe4 hxg3 27.hxg3 
Bg7 28.Rde1 Bc8 29.Qf4 Rd7 30.Qg4 Bf6 31.Qd1 Rhd8 32.c3 c5 33.Rf4 Bg7 34.
d5 Re7 35.Rxe7 Qxe7 36.Qh5 f5 37.Qg6 Qf6 38.Qh5 Bf8 39.g4 Qh6 0-1

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.25"]
[Round "9"]
[White "Henley, Ron"]
[Black "Sunye Neto, Jaime"]
[Result "0-1"]
[WhiteElo "2525"]
[BlackElo "2490"]
[ECO "E32"]
[EventDate "1983.07.15"]
[PlyCount "86"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb4 5.Qc2 Bb7 6.a3 Bxc3+ 7.Qxc3 d6 8.b4 
Nbd7 9.e3 c5 10.Bb2 O-O 11.dxc5 bxc5 12.Be2 a5 13.b5 a4 14.O-O Qe7 15.Nd2 
e5 16.Rad1 Qe6 17.Rfe1 Rfd8 18.Nf1 h5 19.f3 Nf8 20.Qc2 h4 21.e4 Nh5 22.Ne3
Qf6 23.Nd5 Bxd5 24.cxd5 Ng6 25.Bc1 Ngf4 26.Bf1 Rdb8 27.Be3 Qg6 28.Rd2 Qg5 
29.Kf2 Rf8 30.b6 Rab8 31.Rb1 f5 32.exf5 Rxf5 33.Qxa4 Nf6 34.Re2 Rf8 35.Ke1
Qg6 36.Rd2 h3 37.g4 Ng2+ 38.Bxg2 hxg2 39.Rxg2 Rxf3 40.Rb3 Nxd5 41.Qc4 Qf7 
42.Re2 Rf1+ 43.Kd2 Rd1+ 0-1

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.25"]
[Round "9"]
[White "Seirawan, Yasser"]
[Black "Sax, Gyula"]
[Result "0-1"]
[WhiteElo "2605"]
[BlackElo "2570"]
[ECO "A34"]
[EventDate "1983.07.15"]
[PlyCount "102"]

1.c4 Nf6 2.Nc3 c5 3.g3 d5 4.cxd5 Nxd5 5.Bg2 Nc7 6.a3 e5 7.b4 Nc6 8.Nf3 f6 
9.bxc5 Bxc5 10.O-O O-O 11.a4 Ne6 12.Ba3 Kh8 13.Qc1 Rb8 14.d3 b6 15.Rd1 
Ncd4 16.Nxd4 Nxd4 17.e3 Nb3 18.Qb2 Be6 19.Rab1 Qe7 20.Bxc5 bxc5 21.Qa3 Qd7
22.a5 Rfd8 23.a6 Rb6 24.Bb7 h6 25.Na4 Rb5 26.Nc3 Rb4 27.Bf3 Qd6 28.Bb7 Qb6
29.h4 f5 30.Na2 Rb5 31.Nc3 Rb4 32.Na2 Rb5 33.Kh2 Qc7 34.Nc3 Rb6 35.Bg2 
Rdd6 36.Bb7 Qd8 37.Na4 Rb5 38.Nc3 Rb4 39.Qb2 e4 40.dxe4 Nd2 41.Qa1 Nxb1 
42.Rxb1 Rd2 43.Kg1 f4 44.exf4 Rxb1+ 45.Nxb1 Rd1+ 46.Kg2 Qd3 47.f5 Qf1+ 48.
Kf3 Rd3+ 49.Kg4 Qxf2 50.Qe5 Qf3+ 51.Kh3 Rd1 0-1

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.25"]
[Round "9"]
[White "Borm, Franciscus"]
[Black "Van der Wiel, John"]
[Result "0-1"]
[WhiteElo "2355"]
[BlackElo "2515"]
[ECO "B70"]
[EventDate "1983.07.15"]
[PlyCount "122"]

1.e4 c5 2.Nf3 d6 3.d4 Nf6 4.Nc3 cxd4 5.Nxd4 Nc6 6.Be2 g6 7.O-O Nxd4 8.Qxd4
Bg7 9.Bg5 O-O 10.Qe3 Be6 11.Rfd1 Qa5 12.h3 Rfc8 13.a3 Rc7 14.Bf3 Kf8 15.
Rd3 Nd7 16.Nd5 Bxd5 17.exd5 Re8 18.Rb3 Nb6 19.Qe2 Nc4 20.Rb1 e6 21.Rb4 
exd5 22.Qd1 Nxb2 23.Qxd5 Qxd5 24.Bxd5 Re5 25.Bd8 Rd7 26.Bxb7 Rxd8 27.R4xb2
Re2 28.Rb4 Rxc2 29.Rd1 Bb2 30.Bd5 Rd7 31.Be4 Rc1 32.Rxc1 Bxc1 33.a4 Re7 
34.Bf3 Re1+ 35.Kh2 Rf1 36.Kg3 Ba3 37.Rb8+ Kg7 38.Bd5 Rd1 39.Bf3 Rd2 40.Re8
Bb2 41.Bc6 Bd4 42.f3 Bf2+ 43.Kh2 h5 44.g4 h4 45.Bb5 Be3+ 46.Kh1 Bf4 47.Re2
Rd1+ 48.Kg2 Kf6 49.Re4 Rd2+ 50.Re2 Rxe2+ 51.Bxe2 Ke5 52.Bb5 g5 53.Kf2 a5 
54.Ke2 Bc1 55.Be8 f6 56.Bc6 Bf4 57.Bb7 d5 58.Bc6 d4 59.Be4 Be3 60.Kf1 Kf4 
61.Kg2 Bd2 0-1

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.25"]
[Round "9"]
[White "Franco Ocampos, Zenon"]
[Black "Bohm, Hans"]
[Result "1/2-1/2"]
[WhiteElo "2495"]
[BlackElo "2390"]
[ECO "A21"]
[EventDate "1983.07.15"]
[PlyCount "87"]

1.c4 f5 2.Nc3 Nf6 3.g3 e5 4.Bg2 c5 5.e3 Nc6 6.Nge2 d6 7.d4 Be7 8.dxc5 dxc5
9.Bxc6+ bxc6 10.Qxd8+ Kxd8 11.b3 Kc7 12.Na4 Be6 13.Bb2 e4 14.O-O-O Rad8 
15.Bxf6 gxf6 16.f3 Bf7 17.Nf4 Bd6 18.fxe4 fxe4 19.Rhf1 f5 20.Rd2 Rhe8 21.
Ng2 Bg6 22.Nh4 Re5 23.Rdf2 Be7 24.Ng2 Rd6 25.Nf4 Be8 26.Rd1 Rxd1+ 27.Kxd1 
Bd6 28.Kd2 Bf7 29.Kc2 Re8 30.Ng2 Bg6 31.Nf4 Kd7 32.Rd2 Ke7 33.Rd1 Bf7 34.
Rd2 Rg8 35.Rd1 h5 36.Ng2 Ke6 37.Rd2 Be8 38.Kd1 Ke5 39.Ke2 Be7 40.Kf2 Rg4 
41.h4 Rg6 42.Nf4 Rd6 43.Ke2 Bf7 44.Kd1 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.25"]
[Round "9"]
[White "Van Wijgerden, Cornelis"]
[Black "Boersma, Paulus"]
[Result "1/2-1/2"]
[WhiteElo "2430"]
[BlackElo "2355"]
[ECO "A07"]
[EventDate "1983.07.15"]
[PlyCount "54"]

1.g3 d5 2.Bg2 c6 3.d3 e5 4.Nf3 Nd7 5.O-O Ngf6 6.Nbd2 Bd6 7.b3 O-O 8.e3 Re8
9.Bb2 b5 10.c4 Bb7 11.Qc2 a6 12.Rac1 c5 13.cxd5 Bxd5 14.Ne4 Bf8 15.Nxf6+ 
gxf6 16.Nh4 Nb6 17.Qe2 Ra7 18.Be4 Bxe4 19.dxe4 Rd7 20.Rc2 c4 21.Nf5 Kh8 
22.Qg4 b4 23.bxc4 Rd2 24.Rxd2 Qxd2 25.Qh5 Kg8 26.Qg4+ Kh8 27.Qh5 Kg8 
1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.25"]
[Round "9"]
[White "Vogel, Jaap"]
[Black "De Roode, Peter"]
[Result "1-0"]
[WhiteElo "2325"]
[BlackElo "2250"]
[ECO "E06"]
[EventDate "1983.07.15"]
[PlyCount "55"]

1.Nf3 Nf6 2.g3 d5 3.Bg2 c5 4.O-O Nc6 5.d4 e6 6.c4 Be7 7.dxc5 Bxc5 8.Nc3 d4
9.Na4 Be7 10.e3 e5 11.exd4 exd4 12.Bf4 Bf5 13.Ne5 Rc8 14.Re1 O-O 15.Nxc6 
bxc6 16.c5 Qd7 17.b4 Rfe8 18.Nb2 Nd5 19.Qxd4 Nxf4 20.Qxf4 Bf6 21.Nc4 Bxa1 
22.Rxa1 Re2 23.Nd6 Be6 24.Nxc8 Qxc8 25.a3 Rb2 26.Qd6 Bd7 27.Rd1 Be8 28.
Bxc6 1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.25"]
[Round "9"]
[White "Lengyel, Bela"]
[Black "Van der Vliet, Fredrik"]
[Result "1-0"]
[WhiteElo "2315"]
[BlackElo "2345"]
[ECO "B85"]
[EventDate "1983.07.15"]
[PlyCount "74"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e6 7.O-O Be7 8.f4 O-O
9.Be3 Qc7 10.Bf3 Nc6 11.Kh1 Bd7 12.Qe2 Rac8 13.Qf2 b5 14.Nb3 Rb8 15.Rad1 
Rfd8 16.e5 Ne8 17.Ne4 dxe5 18.fxe5 Nxe5 19.Bf4 Nd3 20.Rxd3 Qxf4 21.Nec5 
Nf6 22.Rd4 Qf5 23.Nxa6 Rbc8 24.Rd2 Be8 25.Nd4 Qg5 26.Bb7 Rc4 27.Rfd1 Ng4 
28.Qg1 Qe3 29.c3 Qxg1+ 30.Kxg1 Bg5 31.Rd3 Be3+ 32.Kf1 Bxd4 33.b3 Nxh2+ 34.
Ke2 f6 35.bxc4 Bh5+ 36.Bf3 Nxf3 37.gxf3 Ra8 1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.25"]
[Round "9"]
[White "Murey, Jacob"]
[Black "Langeweg, Christian"]
[Result "1/2-1/2"]
[WhiteElo "2485"]
[BlackElo "2420"]
[ECO "C84"]
[EventDate "1983.07.15"]
[PlyCount "121"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.O-O Bd7 6.c3 Nf6 7.Re1 Be7 8.d3 O-O 
9.Nbd2 Re8 10.a3 Bf8 11.b4 d5 12.exd5 Nxd5 13.Ne4 h6 14.Bb3 Be6 15.Qc2 Nf6
16.Bb2 Nxe4 17.dxe4 a5 18.Rad1 Qf6 19.Bd5 Nd8 20.Nd2 c6 21.Bc4 Bd6 22.Be2 
Qe7 23.Nc4 Bxc4 24.Bxc4 Ne6 25.Re3 Bc7 26.Bc1 axb4 27.axb4 Red8 28.Rf1 Rd7
29.Rf3 b5 30.Bb3 Bb6 31.g3 Kh7 32.Kg2 Raa7 33.Qe2 Qd6 34.Rd1 Qe7 35.Rxd7 
Rxd7 36.Rf5 g6 37.Rxe5 Qf6 38.f4 Bc7 39.Bxe6 fxe6 40.Rc5 e5 41.Qg4 Re7 42.
f5 Kg7 43.fxg6 Bb6 44.Qh5 Bxc5 45.Bxh6+ Kg8 46.bxc5 Re6 47.Qf5 Qxg6 48.Bg5
Qxf5 49.exf5 Re8 50.g4 Kf7 51.Kf3 Ra8 52.Ke4 Ra4+ 53.Kxe5 Rxg4 54.Be3 Rh4 
55.Bd4 Ke7 56.Be3 Rxh2 57.f6+ Kd7 58.f7 Ke7 59.f8=Q+ Kxf8 60.Kd6 Rh3 61.
Bd4 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.25"]
[Round "9"]
[White "Ligterink, Gert"]
[Black "Van Mil, Johannes"]
[Result "1-0"]
[WhiteElo "2430"]
[BlackElo "2340"]
[ECO "B82"]
[EventDate "1983.07.15"]
[PlyCount "41"]

1.e4 c5 2.Nc3 d6 3.Nf3 Nc6 4.d4 cxd4 5.Nxd4 e6 6.Be3 Nf6 7.f4 Be7 8.Qf3 
O-O 9.O-O-O Bd7 10.Rg1 Nxd4 11.Bxd4 Qa5 12.g4 e5 13.Bf2 Rac8 14.g5 Rxc3 
15.bxc3 Qa3+ 16.Kd2 Ne8 17.Bc4 d5 18.Bxd5 Nd6 19.fxe5 Nb5 20.Rb1 Qa5 21.g6
1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.25"]
[Round "9"]
[White "Van Baarle, John"]
[Black "De Boer, Gert Jan"]
[Result "1/2-1/2"]
[WhiteElo "2345"]
[BlackElo "2330"]
[ECO "B22"]
[EventDate "1983.07.15"]
[PlyCount "102"]

1.e4 c5 2.Nf3 e6 3.c3 d5 4.exd5 Qxd5 5.d4 Nf6 6.Bd3 Be7 7.Be3 Nc6 8.O-O 
O-O 9.dxc5 Rd8 10.Bc2 Qxd1 11.Rxd1 Rxd1+ 12.Bxd1 Ng4 13.Bf4 Bxc5 14.Bg3 
Bd7 15.Nbd2 Nf6 16.Bc2 Rd8 17.Rd1 Be8 18.Ng5 Be7 19.Nc4 Rxd1+ 20.Bxd1 h6 
21.Nf3 Ne4 22.Bc7 Bc5 23.Ne3 Ne7 24.Nd4 Bxd4 25.cxd4 Nf6 26.f3 Nfd5 27.
Nxd5 Nxd5 28.Bb8 a6 29.a3 Ne3 30.Be2 Bb5 31.Kf2 Nf5 32.Ba7 Bxe2 33.Kxe2 
Ne7 34.g4 Nd5 35.Bb8 Kf8 36.Kd3 Ke7 37.Be5 g6 38.Bg3 Kd7 39.Be1 Kd6 40.Bd2
h5 41.gxh5 gxh5 42.Ke4 f5+ 43.Kd3 b5 44.b3 Kc6 45.Ba5 Nf4+ 46.Ke3 Ng6 47.
Bd8 Kd7 48.Bb6 Kd6 49.Bd8 Kc6 50.Ba5 Kd5 51.Bc7 Kc6 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.25"]
[Round "9"]
[White "Hresc, Vladimir"]
[Black "Johansen, Darryl"]
[Result "0-1"]
[WhiteElo "2450"]
[BlackElo "2485"]
[ECO "B22"]
[EventDate "1983.07.15"]
[PlyCount "88"]

1.e4 c5 2.c3 b6 3.d4 Bb7 4.d5 Nf6 5.f3 e6 6.c4 d6 7.Nc3 exd5 8.cxd5 g6 9.
Bc4 Bg7 10.Nge2 O-O 11.O-O Ba6 12.Qd3 Bxc4 13.Qxc4 a6 14.Be3 b5 15.Qd3 
Nbd7 16.Rae1 Ne5 17.Qc2 Rc8 18.h3 Re8 19.g4 c4 20.Nc1 Ned7 21.Qf2 Qc7 22.
a3 Nc5 23.Bd4 h6 24.Kg2 Re7 25.Re2 Nfd7 26.Bxg7 Kxg7 27.f4 Rce8 28.h4 Qb6 
29.Qd4+ Kg8 30.g5 h5 31.Rd1 a5 32.Rf1 b4 33.axb4 axb4 34.Nd1 Rxe4 35.Qd2 
Rxe2+ 36.Nxe2 Nb3 37.Qc2 Nd4 38.Nxd4 Qxd4 39.Qa4 Qxd5+ 40.Kg1 Re2 41.Nf2 
Nc5 42.Qxb4 Nd3 43.Qb8+ Kh7 44.Qf8 Nxf4 0-1

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.25"]
[Round "9"]
[White "Berg, Klaus"]
[Black "Grooten, Herman"]
[Result "1-0"]
[WhiteElo "2400"]
[BlackElo "2340"]
[ECO "D94"]
[EventDate "1983.07.15"]
[PlyCount "41"]

1.c4 Nf6 2.Nf3 c5 3.e3 g6 4.d4 Bg7 5.Nc3 O-O 6.Be2 cxd4 7.exd4 d5 8.O-O 
Nbd7 9.Re1 dxc4 10.Bxc4 Nb6 11.Bb3 a5 12.a4 Bd7 13.d5 Bg4 14.h3 Bxf3 15.
Qxf3 Rc8 16.Bf4 Nc4 17.Qe2 Nxd5 18.Nxd5 Qxd5 19.Rac1 Qf5 20.Rxc4 Rxc4 21.
Qxc4 1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.26"]
[Round "10"]
[White "Sax, Gyula"]
[Black "Van der Sterren, Paul"]
[Result "0-1"]
[WhiteElo "2570"]
[BlackElo "2445"]
[ECO "B70"]
[EventDate "1983.07.15"]
[PlyCount "96"]

1.e4 d6 2.g3 g6 3.Bg2 Bg7 4.Nf3 c5 5.d4 cxd4 6.Nxd4 Nf6 7.O-O O-O 8.Nc3 
Nc6 9.Nde2 Bd7 10.h3 Rc8 11.Kh2 Qa5 12.Nd5 Nxd5 13.exd5 Ne5 14.Nd4 Qb6 15.
c3 Bb5 16.Nxb5 Qxb5 17.Re1 Qd3 18.Be3 Qxd1 19.Raxd1 Nc4 20.Bc1 Rfe8 21.Bf1
a6 22.a4 b5 23.axb5 axb5 24.Re4 Rc5 25.Kg2 Bf6 26.g4 g5 27.h4 h6 28.hxg5 
hxg5 29.b3 Nb6 30.c4 bxc4 31.bxc4 Rc7 32.f4 Rec8 33.fxg5 Be5 34.Bf4 Nxc4 
35.Rc1 Bxf4 36.Rcxc4 Bxg5 37.Kf3 Kg7 38.Bd3 Rxc4 39.Rxc4 Rh8 40.Bf1 Rb8 
41.Bd3 Rb3 42.Ke4 Rb2 43.Kf5 Rd2 44.Be4 Be3 45.Rc2 Rd1 46.Bg2 Rd4 47.Be4 
Ra4 48.Rc7 e6+ 0-1

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.26"]
[Round "10"]
[White "Chandler, Murray Graham"]
[Black "Hort, Vlastimil"]
[Result "1/2-1/2"]
[WhiteElo "2485"]
[BlackElo "2595"]
[ECO "B06"]
[EventDate "1983.07.15"]
[PlyCount "67"]

1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.f4 c6 5.Nf3 Bg4 6.Be3 Qb6 7.Qd2 Bxf3 8.gxf3 
Nd7 9.Bh3 Qc7 10.O-O-O Nb6 11.Qd3 Nf6 12.f5 Nfd7 13.Kb1 O-O-O 14.Rhg1 Kb8 
15.a4 Nc8 16.Qc4 Rhf8 17.Bf4 Qb6 18.Ne2 Ka8 19.Rd3 Nb8 20.Qa2 a5 21.f6 
Bxf6 22.Bh6 e6 23.Bxf8 Rxf8 24.Qb3 Qa7 25.Rdd1 Na6 26.c3 d5 27.Nc1 Be7 28.
c4 dxc4 29.Qxc4 Rd8 30.Rg2 Bf6 31.Rgd2 Bg5 32.Rg2 Bf6 33.Rgd2 Bg5 34.Rg2 
1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.26"]
[Round "10"]
[White "Short, Nigel David"]
[Black "Seirawan, Yasser"]
[Result "1-0"]
[WhiteElo "2475"]
[BlackElo "2605"]
[ECO "B82"]
[EventDate "1983.07.15"]
[PlyCount "149"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3 b5 6.Bd3 Bb7 7.O-O Qc7 8.Qe2 
Nf6 9.Kh1 Be7 10.f4 d6 11.Bd2 Nbd7 12.b4 O-O 13.a4 bxa4 14.Rxa4 Nb6 15.
Raa1 g6 16.Bxa6 Rxa6 17.Rxa6 e5 18.Nb3 Bxa6 19.Qxa6 exf4 20.Rxf4 Rc8 21.
Qf1 Nbd7 22.b5 Bf8 23.Nd4 Bg7 24.Nc6 Re8 25.Qc4 Qb6 26.Nd5 Nxd5 27.Qxd5 
Re6 28.Rxf7 Kxf7 29.Ba5 Qf2 30.Nd8+ Kf8 31.Nxe6+ Ke7 32.Bd8+ Ke8 33.Nxg7+ 
Kxd8 34.Qa8+ Ke7 35.Qe8+ Kf6 36.Qd8+ Kxg7 37.Qxd7+ Kh6 38.Qh3+ Kg7 39.Qc3+
Kh6 40.Qh3+ Kg7 41.Qc3+ Kh6 42.h3 Qf1+ 43.Kh2 Qxb5 44.Qd2+ Kg7 45.Qxd6 Qc4
46.Qe5+ Kh6 47.c3 Qf1 48.Qg3 Kg7 49.Qc7+ Kg8 50.c4 h5 51.c5 Qc4 52.Qd8+ 
Kg7 53.Qd5 Qc3 54.c6 h4 55.Qd7+ Kh6 56.Qd6 Kh5 57.Qf4 Qxc6 58.Qg4+ Kh6 59.
Qxh4+ Kg7 60.e5 Qc1 61.Qf6+ Kh6 62.Qf2 Kg7 63.e6 Qc7+ 64.Qg3 Qc5 65.Qf4 g5
66.Qf7+ Kh6 67.Qf6+ Kh7 68.e7 Qc7+ 69.Kg1 Qc5+ 70.Kf1 Qc4+ 71.Kf2 Qc2+ 72.
Kg3 Qc7+ 73.Kf3 Qb7+ 74.Kf2 Qa7+ 75.Kf1 1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.26"]
[Round "10"]
[White "Van der Wiel, John"]
[Black "Ree, Hans"]
[Result "1/2-1/2"]
[WhiteElo "2515"]
[BlackElo "2500"]
[ECO "C05"]
[EventDate "1983.07.15"]
[PlyCount "39"]

1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.f4 c5 6.c3 Nc6 7.Ndf3 Qb6 8.g3 f5 9.
Ne2 a5 10.Ng5 Ndb8 11.Rg1 Be7 12.g4 Bxg5 13.fxg5 cxd4 14.cxd4 O-O 15.gxf5 
Rxf5 16.Bh3 Rf3 17.Bg4 Nxe5 18.dxe5 Qf2+ 19.Kd2 Qe3+ 20.Ke1 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.26"]
[Round "10"]
[White "Lobron, Eric"]
[Black "Boersma, Paulus"]
[Result "1-0"]
[WhiteElo "2480"]
[BlackElo "2355"]
[ECO "B10"]
[EventDate "1983.07.15"]
[PlyCount "73"]

1.e4 c6 2.d3 d5 3.Nd2 e5 4.Ngf3 Bd6 5.Be2 Nf6 6.O-O O-O 7.c3 Re8 8.Re1 
Nbd7 9.Bf1 h6 10.Qc2 a5 11.b3 dxe4 12.dxe4 b5 13.a4 Qb6 14.axb5 cxb5 15.b4
Bb7 16.bxa5 Rxa5 17.Rxa5 Qxa5 18.Qd3 Qc7 19.Qxb5 Bc5 20.h3 Bc6 21.Qe2 Rb8 
22.Nh4 Nf8 23.Nf5 Ne6 24.Qf3 Kf8 25.Nc4 Ng5 26.Bxg5 hxg5 27.Bd3 Ra8 28.Qg3
Ra2 29.Qxg5 Bxf2+ 30.Kh1 Ne8 31.Rf1 Bxe4 32.Bxe4 f6 33.Qh5 Qxc4 34.Qxe8+ 
Kxe8 35.Nd6+ Ke7 36.Nxc4 Ra4 37.Bd5 1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.26"]
[Round "10"]
[White "Borm, Franciscus"]
[Black "Ligterink, Gert"]
[Result "1/2-1/2"]
[WhiteElo "2355"]
[BlackElo "2430"]
[ECO "B58"]
[EventDate "1983.07.15"]
[PlyCount "116"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Be2 e5 7.Nf3 h6 8.O-O 
Be7 9.Re1 O-O 10.h3 Re8 11.a3 Bf8 12.Bf1 a6 13.Be3 Rb8 14.Bc4 Be6 15.Bd5 
Qd7 16.Bb6 Be7 17.Qd3 Bd8 18.Be3 b5 19.Rad1 Bc7 20.b4 Red8 21.Nd2 Ne7 22.
Bxe6 fxe6 23.Ne2 d5 24.Bc5 Nc6 25.Ng3 Qf7 26.Qf3 a5 27.c3 Nd7 28.Qxf7+ 
Kxf7 29.Nf3 Nxc5 30.bxc5 d4 31.Ne2 dxc3 32.Rxd8 Bxd8 33.Nxc3 b4 34.axb4 
Rxb4 35.Rb1 Rxb1+ 36.Nxb1 Be7 37.Nc3 Bxc5 38.Na4 Bd4 39.Kf1 Ke7 40.Nd2 Kd7
41.Nb3 Kc7 42.Ke1 Bb6 43.Nbc5 Bxc5 44.Nxc5 Nd4 45.Kd2 Kc6 46.Nd3 Kd6 47.
Nb2 Kc5 48.Nd3+ Kc4 49.Nxe5+ Kb3 50.Nd3 a4 51.Nc5+ Kb4 52.Nxa4 Kxa4 53.Kd3
Nb5 54.Kc4 Nd6+ 55.Kd4 Nf7 56.Kc5 Kb3 57.Kc6 Kc4 58.Kd7 Ng5 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.26"]
[Round "10"]
[White "Bohm, Hans"]
[Black "Henley, Ron"]
[Result "0-1"]
[WhiteElo "2390"]
[BlackElo "2525"]
[ECO "D82"]
[EventDate "1983.07.15"]
[PlyCount "82"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 c5 6.dxc5 Qa5 7.Qb3 dxc4 8.Bxc4 
O-O 9.Nf3 Ne4 10.Ne5 Bxe5 11.Bxe5 Nc6 12.Bg3 Nxc5 13.Qb5 Bf5 14.O-O Qxb5 
15.Nxb5 Ne4 16.Rfd1 Nxg3 17.hxg3 Rfd8 18.Bd5 Bc2 19.Rdc1 Rxd5 20.Nc7 Rc5 
21.Nxa8 Nb4 22.a3 Nd3 23.b4 Rc8 24.e4 Kf8 25.b5 Nxc1 26.Rxc1 b6 27.a4 Ke8 
28.a5 bxa5 29.b6 Rxa8 30.b7 Rb8 31.Rxc2 Rxb7 32.Rc5 a6 33.Rxa5 Ra7 34.Kf1 
Kd7 35.Ke2 Kc6 36.Kd3 Kb6 37.Ra2 a5 38.Kc4 a4 39.Kb4 a3 40.f3 h5 41.Kb3 
Kb5 0-1

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.26"]
[Round "10"]
[White "Franco Ocampos, Zenon"]
[Black "Lengyel, Bela"]
[Result "1-0"]
[WhiteElo "2495"]
[BlackElo "2315"]
[ECO "C84"]
[EventDate "1983.07.15"]
[PlyCount "89"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d4 exd4 6.O-O Be7 7.Re1 b5 8.e5 
Nxe5 9.Rxe5 d6 10.Re1 bxa4 11.Nxd4 Bd7 12.Qf3 O-O 13.Nc6 Bxc6 14.Qxc6 Re8 
15.Nc3 Ng4 16.Qxa4 Bh4 17.Rf1 h5 18.Bf4 Rb8 19.Rab1 Bf6 20.h3 Ne5 21.Nd5 
Ng6 22.Be3 Bxb2 23.Qxa6 c5 24.c3 Qd7 25.Qe2 Qf5 26.Rfd1 Ba3 27.Rb3 Rxb3 
28.axb3 Nh4 29.Qc4 Qc2 30.Rf1 Re4 31.Qa6 Bb2 32.Qxd6 Qxb3 33.Qxc5 Ba3 34.
Qc6 Re6 35.Qd7 Bd6 36.Nf4 Bxf4 37.Bxf4 Ng6 38.Qd8+ Kh7 39.Qd3 Rc6 40.Be5 
Qe6 41.Bd4 Qd5 42.Re1 f5 43.Qg3 f4 44.Qd3 Kh6 45.Bxg7+ 1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.26"]
[Round "10"]
[White "Langeweg, Christian"]
[Black "Van Wijgerden, Cornelis"]
[Result "1/2-1/2"]
[WhiteElo "2420"]
[BlackElo "2430"]
[ECO "D44"]
[EventDate "1983.07.15"]
[PlyCount "73"]

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5 9.
Nxg5 hxg5 10.Bxg5 Nbd7 11.exf6 Bb7 12.g3 c5 13.d5 Bh6 14.Bxh6 Rxh6 15.Bg2 
b4 16.Ne4 Nxf6 17.Qa4+ Kf8 18.Nxc5 Bxd5 19.Qxb4 Kg7 20.O-O-O Qb6 21.Qxb6 
axb6 22.Bxd5 exd5 23.Nb7 Ne4 24.Rxd5 Nxf2 25.Rf1 Rxh2 26.Rd2 Nd3+ 27.Kc2 
Nb4+ 28.Kd1 Rxd2+ 29.Kxd2 Ra7 30.Nd6 Rd7 31.Rxf7+ Rxf7 32.Nxf7 Kxf7 33.Kc3
Nd5+ 34.Kxc4 Nc7 35.a4 Ke6 36.a5 bxa5 37.Kc5 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.26"]
[Round "10"]
[White "Sunye Neto, Jaime"]
[Black "Timman, Jan"]
[Result "0-1"]
[WhiteElo "2490"]
[BlackElo "2605"]
[ECO "A06"]
[EventDate "1983.07.15"]
[PlyCount "102"]

1.Nf3 d5 2.b3 Bg4 3.Bb2 Bxf3 4.gxf3 e6 5.e3 Nf6 6.f4 Bd6 7.c4 Qe7 8.Rg1 g6
9.Qc2 Nbd7 10.Nc3 c6 11.a3 a6 12.Be2 Rg8 13.b4 e5 14.fxe5 Bxe5 15.f4 Bxc3 
16.Bxc3 Ne4 17.O-O-O a5 18.cxd5 cxd5 19.Kb2 Rc8 20.Bb5 axb4 21.axb4 Nd6 
22.Qd3 Kf8 23.Rg5 Nb6 24.Qd4 h6 25.Rgg1 Qe6 26.Bd3 Nbc4+ 27.Bxc4 Nxc4+ 28.
Kb3 Ke7 29.d3 Nd6 30.Qe5 Rc6 31.Qxe6+ Kxe6 32.Rde1 Rgc8 33.Bb2 Rc2 34.e4 
dxe4 35.dxe4 Rxh2 36.f5+ gxf5 37.exf5+ Kd7 38.Rd1 Rh3+ 39.Ka2 Rc2 40.Kb1 
Re2 41.Bg7 Kc6 42.Rc1+ Kb6 43.Bd4+ Kb5 44.Rc2 Rxc2 45.Kxc2 Nxf5 46.Bc5 b6 
47.Bf8 Nd4+ 48.Kb1 h5 49.Rf1 f5 50.Rf4 Kc4 51.Bg7 Kb3 0-1

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.26"]
[Round "10"]
[White "Vogel, Jaap"]
[Black "Murey, Jacob"]
[Result "1/2-1/2"]
[WhiteElo "2325"]
[BlackElo "2485"]
[ECO "A49"]
[EventDate "1983.07.15"]
[PlyCount "95"]

1.Nf3 g6 2.g3 Bg7 3.d4 c5 4.c3 Na6 5.Bg2 Nf6 6.O-O O-O 7.h3 d6 8.Re1 Ne4 
9.Bf4 cxd4 10.cxd4 e5 11.dxe5 Qb6 12.Be3 Qxb2 13.Bd4 Qb4 14.a3 Qc4 15.Nbd2
Nxd2 16.Qxd2 d5 17.a4 Nc5 18.Rac1 Nb3 19.Rxc4 Nxd2 20.Rc7 Nb3 21.e3 b6 22.
Ng5 Be6 23.Rb1 Nxd4 24.exd4 Bh6 25.Nxe6 fxe6 26.Rb2 Rf7 27.Rbc2 Bf8 28.h4 
Re8 29.Bh3 Rxc7 30.Rxc7 Ba3 31.Rc2 Kf7 32.Bf1 Re7 33.Bd3 Ke8 34.Kf1 Kd8 
35.Ke2 Rc7 36.h5 Rxc2+ 37.Bxc2 Bb2 38.Ke3 Bc1+ 39.Ke2 Bb2 40.Bxg6 Bxd4 41.
f4 h6 42.Bd3 Ke7 43.Ba6 Kf7 44.Bc8 Bc3 45.Kf3 Bd2 46.g4 Ke7 47.f5 Bc3 48.
Bxe6 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.26"]
[Round "10"]
[White "De Boer, Gert Jan"]
[Black "Van der Vliet, Fredrik"]
[Result "1-0"]
[WhiteElo "2330"]
[BlackElo "2345"]
[ECO "E11"]
[EventDate "1983.07.15"]
[PlyCount "73"]

1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 a5 5.g3 d5 6.Bg2 dxc4 7.Qc2 Nc6 8.Qxc4 
Qd5 9.Qd3 O-O 10.Nc3 Qh5 11.a3 Bd6 12.e4 Rd8 13.Qc4 e5 14.d5 Na7 15.h3 Ne8
16.g4 Qg6 17.Nh4 Qf6 18.Nf5 Rd7 19.b4 b5 20.Qb3 Bf8 21.O-O g6 22.g5 Qd8 
23.Nh6+ Bxh6 24.gxh6 a4 25.Qc2 Nd6 26.Rae1 f6 27.f4 Nf7 28.fxe5 Nxe5 29.
Rf2 Rf7 30.Ref1 Bd7 31.Ne2 Nc8 32.Nd4 Nd6 33.Ne6 Bxe6 34.dxe6 Rf8 35.Bg5 
Ne8 36.Qc3 Nc4 37.e5 1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.26"]
[Round "10"]
[White "Johansen, Darryl"]
[Black "Kuijf, Marinus"]
[Result "0-1"]
[WhiteElo "2485"]
[BlackElo "2420"]
[ECO "D45"]
[EventDate "1983.07.15"]
[PlyCount "78"]

1.c4 Nf6 2.Nf3 c6 3.e3 d5 4.Nc3 e6 5.d4 Nbd7 6.a3 Bd6 7.Qc2 O-O 8.c5 Bc7 
9.b4 e5 10.Bb2 e4 11.Nh4 g5 12.Nf5 Nxc5 13.Nh6+ Kg7 14.h4 g4 15.Nxf7 Nd3+ 
16.Qxd3 Rxf7 17.Qd2 Nh5 18.Be2 Qe7 19.Rf1 Bd6 20.O-O-O a5 21.f3 axb4 22.
axb4 Ng3 23.Rg1 Bxb4 24.Rde1 Qxh4 25.Bd1 Qe7 26.Qf2 Qc7 27.f4 Qa5 28.Nb1 
Bxe1 29.Rxe1 Nh5 30.Rh1 Nf6 31.Nc3 Qd8 32.Qh4 Kh8 33.Nxe4 Qe7 34.Ng5 Qxe3+
35.Kb1 Bf5+ 36.Bc2 Bxc2+ 37.Kxc2 Qe2+ 38.Kc1 Qc4+ 39.Kd2 Re7 0-1

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.26"]
[Round "10"]
[White "De Roode, Peter"]
[Black "Van Baarle, John"]
[Result "0-1"]
[WhiteElo "2250"]
[BlackElo "2345"]
[ECO "D26"]
[EventDate "1983.07.15"]
[PlyCount "58"]

1.c4 c5 2.Nf3 Nf6 3.Nc3 d5 4.cxd5 Nxd5 5.e3 e6 6.d4 cxd4 7.exd4 Be7 8.Bc4 
Nf6 9.O-O O-O 10.Qd3 Nbd7 11.a3 Nb6 12.Bb3 Bd7 13.Ne5 Rc8 14.Re1 Bc6 15.
Re3 Nbd5 16.Rg3 Nxc3 17.bxc3 Be4 18.Qe2 Qb6 19.Ba2 Rfd8 20.Bb2 Bf5 21.Rd1 
Bd6 22.Ba1 Bxa3 23.c4 Bf8 24.Rg5 Qc7 25.Qf3 Bd6 26.Nd3 Qa5 27.d5 Bg6 28.
Bb3 Be7 29.dxe6 Qxg5 0-1

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.26"]
[Round "10"]
[White "Van Mil, Johannes"]
[Black "Berg, Klaus"]
[Result "1/2-1/2"]
[WhiteElo "2340"]
[BlackElo "2400"]
[ECO "B19"]
[EventDate "1983.07.15"]
[PlyCount "37"]

1.e4 c6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.h4 h6 7.Nf3 Nd7 8.h5 Bh7
9.Bd3 Bxd3 10.Qxd3 Qc7 11.Bd2 Ngf6 12.O-O-O e6 13.Ne4 Be7 14.Nxf6+ Bxf6 
15.Kb1 c5 16.d5 e5 17.c4 b5 18.cxb5 O-O 19.Rhe1 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.26"]
[Round "10"]
[White "Grooten, Herman"]
[Black "Hresc, Vladimir"]
[Result "0-1"]
[WhiteElo "2340"]
[BlackElo "2450"]
[ECO "D85"]
[EventDate "1983.07.15"]
[PlyCount "78"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7 7.Nf3 O-O 8.Rb1
c5 9.Be2 Qa5 10.Rb5 Qxc3+ 11.Bd2 Qa3 12.Ra5 Qb2 13.Rxc5 Qxa2 14.Qc1 Bg4 
15.Bc4 Qa4 16.Bb5 Qb3 17.Bc4 Qb6 18.Ba5 Qf6 19.Ne5 Be6 20.Rc7 Nc6 21.Nxc6 
bxc6 22.O-O Bxc4 23.Qxc4 Qxd4 24.Qxc6 e6 25.g3 h5 26.Rc1 Qd3 27.Bb4 Rfd8 
28.Be7 Rdb8 29.Kg2 a5 30.Rc4 a4 31.Rxa4 Rxa4 32.Qxa4 Rb1 33.Bf6 Qf1+ 34.
Kf3 Rd1 35.Qa8+ Kh7 36.Rxf7 Rd3+ 37.Kf4 Qc1+ 38.Ke5 Qc5+ 39.Kf4 g5+ 0-1

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.28"]
[Round "11"]
[White "Timman, Jan"]
[Black "Lobron, Eric"]
[Result "1-0"]
[WhiteElo "2605"]
[BlackElo "2480"]
[ECO "E31"]
[EventDate "1983.07.15"]
[PlyCount "93"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5 h6 5.Bh4 c5 6.d5 d6 7.e3 exd5 8.cxd5 g5 
9.Bg3 Ne4 10.Qc2 Qe7 11.Bd3 Bxc3+ 12.bxc3 Nxg3 13.hxg3 Nd7 14.Rb1 Ne5 15.
c4 Qf6 16.Ne2 Ng4 17.Nc3 h5 18.Ne4 Qe7 19.Qc3 Ne5 20.Be2 b6 21.f4 gxf4 22.
exf4 Ng6 23.Nf6+ Kd8 24.Kd2 h4 25.Rbe1 Qf8 26.Bd3 Qg7 27.Bxg6 Qxg6 28.Re2 
Rh6 29.Re8+ Kc7 30.Ng8 Rh7 31.Rhe1 f5 32.R1e7+ Rxe7 33.Rxe7+ Bd7 34.Rg7 
Rxg8 35.Rxg6 Rxg6 36.gxh4 Rxg2+ 37.Ke1 Rg1+ 38.Kf2 Rg4 39.h5 Rxf4+ 40.Kg3 
Rg4+ 41.Kf3 Rh4 42.Qh8 b5 43.cxb5 Rh3+ 44.Kf4 Rh4+ 45.Kg5 Rg4+ 46.Kf6 f4 
47.Qa8 1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.28"]
[Round "11"]
[White "Hort, Vlastimil"]
[Black "Van der Wiel, John"]
[Result "1-0"]
[WhiteElo "2595"]
[BlackElo "2515"]
[ECO "E42"]
[EventDate "1983.07.15"]
[PlyCount "55"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Ne2 cxd4 6.exd4 O-O 7.a3 Be7 8.Nf4 d6
9.Be2 e5 10.Nfd5 Nxd5 11.Nxd5 Nc6 12.dxe5 dxe5 13.Be3 Bg5 14.O-O Bxe3 15.
Nxe3 Qg5 16.Bf3 Rd8 17.Bd5 Be6 18.Qd3 Nd4 19.Rad1 Rd6 20.Kh1 Re8 21.Rde1 
Qf4 22.f3 Bc8 23.g3 Qh6 24.Ng4 Qh3 25.Kg1 Bxg4 26.Qxd4 Rh6 27.Bxf7+ Kh8 
28.Qd2 1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.28"]
[Round "11"]
[White "Van der Sterren, Paul"]
[Black "Chandler, Murray Graham"]
[Result "0-1"]
[WhiteElo "2445"]
[BlackElo "2485"]
[ECO "A77"]
[EventDate "1983.07.15"]
[PlyCount "84"]

1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 exd5 5.cxd5 d6 6.Nc3 g6 7.e4 Bg7 8.Nd2 O-O 
9.Be2 Re8 10.O-O Nbd7 11.a4 Ne5 12.Re1 a6 13.Nf1 Rb8 14.f4 Ned7 15.Nd2 c4 
16.e5 dxe5 17.Nxc4 b5 18.axb5 axb5 19.Nxe5 b4 20.Na4 Nxe5 21.fxe5 Nxd5 22.
Bf3 Rb5 23.Qd4 Bb7 24.b3 Qb8 25.Bb2 Nc7 26.Bxb7 Ne6 27.Qe4 Rxb7 28.Rad1 h5
29.h3 Rbe7 30.Rd6 Bf8 31.Kh1 Rc7 32.Rc6 Rxc6 33.Qxc6 Rc8 34.Qe4 Rd8 35.Qe3
Qb5 36.Qf3 Rd3 37.Re3 Rd2 38.Re1 Qd3 39.Rf1 Qxf3 40.Rxf3 Nc5 41.e6 Nxa4 
42.exf7+ Kh7 0-1

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.28"]
[Round "11"]
[White "Kuijf, Marinus"]
[Black "Sunye Neto, Jaime"]
[Result "1-0"]
[WhiteElo "2420"]
[BlackElo "2490"]
[ECO "B26"]
[EventDate "1983.07.15"]
[PlyCount "85"]

1.e4 c5 2.Ne2 d6 3.Nbc3 Nf6 4.g3 Nc6 5.Bg2 g6 6.O-O Bg7 7.d3 O-O 8.h3 e5 
9.Be3 Nd4 10.f4 Nxe2+ 11.Nxe2 exf4 12.Nxf4 Bd7 13.Qd2 Bc6 14.Kh2 Nd7 15.c3
Ne5 16.b3 Re8 17.Rf2 Nd7 18.Raf1 Ne5 19.a4 Nd7 20.b4 cxb4 21.cxb4 Ne5 22.
b5 Bd7 23.Nd5 Re6 24.Bg5 Qf8 25.Nc7 Rc8 26.Nxe6 Bxe6 27.d4 Nc4 28.Qd1 Rc7 
29.Rc2 a6 30.bxa6 bxa6 31.Qd3 h6 32.Bf4 g5 33.Bc1 Qc8 34.Rff2 Bd7 35.Bf1 
Na5 36.Rxc7 Qxc7 37.Rc2 Qb7 38.Rb2 Qc7 39.Rc2 Qb7 40.Ra2 Nc6 41.Rb2 Qa7 
42.Be3 Nxd4 43.Bg2 1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.28"]
[Round "11"]
[White "Henley, Ron"]
[Black "Short, Nigel David"]
[Result "1/2-1/2"]
[WhiteElo "2525"]
[BlackElo "2475"]
[ECO "D05"]
[EventDate "1983.07.15"]
[PlyCount "33"]

1.d4 Nf6 2.Nf3 e6 3.e3 b6 4.Nbd2 Bb7 5.Bd3 c5 6.O-O Be7 7.c3 d5 8.Qe2 Nbd7
9.b3 O-O 10.Bb2 Ne4 11.Rfd1 Qc7 12.c4 Nxd2 13.Rxd2 dxc4 14.Bxc4 Rad8 15.
Rc1 Qb8 16.a3 Bxf3 17.Qxf3 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.28"]
[Round "11"]
[White "Ree, Hans"]
[Black "Sax, Gyula"]
[Result "0-1"]
[WhiteElo "2500"]
[BlackElo "2570"]
[ECO "A63"]
[EventDate "1983.07.15"]
[PlyCount "58"]

1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 exd5 5.cxd5 g6 6.Nc3 Bg7 7.g3 d6 8.Bg2 O-O 
9.O-O Nbd7 10.Re1 a6 11.a4 Rb8 12.e4 b5 13.axb5 axb5 14.Bf1 b4 15.Nb5 Ne8 
16.Bf4 Rb6 17.Qc2 Bb7 18.Na7 h6 19.Bb5 g5 20.Be3 Nc7 21.Bc6 Ba6 22.Ba4 Bb5
23.Bxb5 Nxb5 24.e5 Nxa7 25.Rxa7 Nxe5 26.Nxe5 Bxe5 27.Bxc5 Qc8 28.Re2 b3 
29.Qc1 Bd4 0-1

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.28"]
[Round "11"]
[White "Seirawan, Yasser"]
[Black "Murey, Jacob"]
[Result "1-0"]
[WhiteElo "2605"]
[BlackElo "2485"]
[ECO "A28"]
[EventDate "1983.07.15"]
[PlyCount "62"]

1.c4 e5 2.Nc3 Nc6 3.e3 d6 4.d4 Nf6 5.Nf3 Bf5 6.Be2 Ne4 7.Nxe4 Bxe4 8.O-O 
a5 9.d5 Nb4 10.a3 Na6 11.Bd2 c6 12.Bc3 cxd5 13.Nd2 Nc5 14.b4 Qg5 15.Bf3 
Nd7 16.Nxe4 dxe4 17.Bxe4 Rc8 18.Qd3 Rc7 19.f4 Qh5 20.Rf3 Nf6 21.c5 Nxe4 
22.Qxe4 f5 23.Qc4 Qf7 24.Qb5+ Qd7 25.Qxa5 e4 26.Rf2 Kf7 27.Rd1 Be7 28.Be5 
Rc6 29.Qb5 Ra8 30.a4 d5 31.Rfd2 Rd6 1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.28"]
[Round "11"]
[White "Bohm, Hans"]
[Black "Johansen, Darryl"]
[Result "1-0"]
[WhiteElo "2390"]
[BlackElo "2485"]
[ECO "A43"]
[EventDate "1983.07.15"]
[PlyCount "47"]

1.d4 e6 2.e4 c5 3.d5 exd5 4.exd5 d6 5.Bb5+ Nd7 6.Nf3 Nf6 7.O-O Be7 8.Re1 
a6 9.Bf1 O-O 10.a4 b6 11.c4 Ne8 12.Nc3 Nc7 13.Qc2 Nf6 14.Bd3 Re8 15.b3 Bd7
16.Ng5 h6 17.Bh7+ Kf8 18.Nxf7 Kxf7 19.Qg6+ Kf8 20.Bxh6 gxh6 21.Qxh6+ Kf7 
22.Bg6+ Kg8 23.Ne4 Ncxd5 24.cxd5 1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.28"]
[Round "11"]
[White "Langeweg, Christian"]
[Black "Borm, Franciscus"]
[Result "1/2-1/2"]
[WhiteElo "2420"]
[BlackElo "2355"]
[ECO "D36"]
[EventDate "1983.07.15"]
[PlyCount "111"]

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 c6 6.e3 h6 7.Bh4 Be7 8.Bd3 O-O
9.Qc2 Re8 10.Nf3 Nbd7 11.Bg3 Nf8 12.O-O Nh5 13.Be5 Bg4 14.Bf5 Bxf3 15.gxf3
Bd6 16.Bxd6 Qxd6 17.Kh1 g6 18.Rg1 Kh8 19.Bd3 f5 20.Rg2 Qf6 21.Rag1 Re7 22.
f4 Ng7 23.Nb1 Ne8 24.Nd2 Nd6 25.Nf3 Rae8 26.Rg3 Ne4 27.Rh3 Rh7 28.Ne5 Ree7
29.Bxe4 dxe4 30.f3 exf3 31.Rxf3 Qe6 32.Rfg3 Rhg7 33.b3 Qd5+ 34.R1g2 Kh7 
35.h3 Rg8 36.Kh2 Reg7 37.h4 h5 38.Rg5 Kh6 39.Rg1 Nd7 40.Qc4 Nf6 41.Qxd5 
Nxd5 42.R5g3 Nf6 43.Rc1 Re7 44.Kg2 Ne4 45.Rh3 Rd8 46.Rh2 Rd5 47.Kf3 c5 48.
Rhc2 cxd4 49.exd4 Rxd4 50.Rc7 Rxc7 51.Rxc7 Rb4 52.Ke3 Nf6 53.Nf7+ Kg7 54.
Ng5+ Kg8 55.Rc8+ Kg7 56.Rc7+ 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.28"]
[Round "11"]
[White "Van Wijgerden, Cornelis"]
[Black "Vogel, Jaap"]
[Result "1/2-1/2"]
[WhiteElo "2430"]
[BlackElo "2325"]
[ECO "A18"]
[EventDate "1983.07.15"]
[PlyCount "86"]

1.c4 Nf6 2.Nc3 e6 3.e4 d5 4.e5 Nfd7 5.d4 dxc4 6.Bxc4 c5 7.Nf3 Nc6 8.Bf4 
cxd4 9.Nxd4 Ndxe5 10.Nxc6 Qxd1+ 11.Rxd1 Nxc6 12.Nb5 Bb4+ 13.Ke2 O-O 14.a3 
Be7 15.Rd2 a6 16.Nc7 Ra7 17.Rc1 b6 18.Ba2 e5 19.Rxc6 exf4 20.Nd5 Bg5 21.f3
Be6 22.Rxb6 Re8 23.Kd1 Bf5 24.Re2 Rd8 25.Rd6 Rad7 26.Rxd7 Bxd7 27.Bc4 a5 
28.Rd2 Bf5 29.b3 g6 30.Nc7 Rxd2+ 31.Kxd2 Be7 32.b4 axb4 33.Nd5 Bd6 34.axb4
Be6 35.b5 Bxd5 36.Bxd5 Kf8 37.Kd3 Ke7 38.Kd4 f6 39.Bg8 Kd7 40.Bxh7 g5 41.
Kd5 Be5 42.b6 Kc8 43.Kc6 Kb8 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.28"]
[Round "11"]
[White "Boersma, Paulus"]
[Black "Franco Ocampos, Zenon"]
[Result "1/2-1/2"]
[WhiteElo "2355"]
[BlackElo "2495"]
[ECO "D41"]
[EventDate "1983.07.15"]
[PlyCount "40"]

1.Nf3 Nf6 2.c4 c5 3.Nc3 e6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nc6 7.O-O Be7 8.d4 
O-O 9.e4 Nb6 10.d5 exd5 11.exd5 Nb4 12.Ne1 Bf6 13.a3 Bxc3 14.axb4 Bxb4 15.
Nc2 Bf5 16.Nxb4 cxb4 17.d6 Qd7 18.Bf4 Rfe8 19.Qd4 b3 20.Ra5 h6 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.28"]
[Round "11"]
[White "Lengyel, Bela"]
[Black "Van Baarle, John"]
[Result "1-0"]
[WhiteElo "2315"]
[BlackElo "2345"]
[ECO "B08"]
[EventDate "1983.07.15"]
[PlyCount "117"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Be2 O-O 6.O-O c6 7.a4 Nbd7 8.Bf4 Nh5
9.Be3 e5 10.Qd2 Qe7 11.Rad1 f5 12.dxe5 dxe5 13.Qd6 Qxd6 14.Rxd6 f4 15.Bc4+
Kh8 16.Bc1 Bf6 17.Rfd1 Nb6 18.Be2 a5 19.b3 Bg4 20.Ne1 Bxe2 21.Nxe2 Rae8 
22.Bb2 Kg8 23.Nf3 Be7 24.R6d3 Nf6 25.Bxe5 Nxe4 26.Rd4 Ng5 27.Rxf4 Rxf4 28.
Nxf4 Nxf3+ 29.gxf3 Bc5 30.Bc7 Re7 31.Bd8 Rf7 32.Ne6 Nd7 33.Bxa5 b6 34.Nxc5
bxc5 35.Kg2 Kf8 36.Bc7 Nf6 37.Bd6+ Kg8 38.Bxc5 Nd5 39.Be3 Re7 40.Rxd5 cxd5
41.a5 Kf7 42.b4 Rb7 43.c3 Ke6 44.a6 Rb8 45.a7 Ra8 46.Kg3 Kd7 47.Kf4 Kc6 
48.Kg5 Kb7 49.Kh6 Rc8 50.Bd4 Rc7 51.h4 Rf7 52.Bg7 Rxf3 53.Kxh7 Rxf2 54.
Kxg6 Rg2+ 55.Kh6 Kxa7 56.h5 Rh2 57.Kg6 Rg2+ 58.Kh7 Kb6 59.h6 1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.28"]
[Round "11"]
[White "Ligterink, Gert"]
[Black "De Boer, Gert Jan"]
[Result "1/2-1/2"]
[WhiteElo "2430"]
[BlackElo "2330"]
[ECO "E94"]
[EventDate "1983.07.15"]
[PlyCount "71"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.Nf3 O-O 5.e4 d6 6.Be2 e5 7.Be3 c6 8.O-O exd4 
9.Nxd4 Re8 10.f3 d5 11.cxd5 Nxd5 12.Nxd5 cxd5 13.Qb3 Bxd4 14.Bxd4 Nc6 15.
Be3 dxe4 16.fxe4 Qe7 17.a3 Be6 18.Qc3 Red8 19.Rad1 Rxd1 20.Rxd1 Rd8 21.
Rxd8+ Qxd8 22.b4 a6 23.a4 Qd6 24.b5 axb5 25.axb5 Ne5 26.Bc5 Qb8 27.Qd4 Nd7
28.Bd6 Qd8 29.Kf2 f6 30.Ke3 Kf7 31.g4 Qa5 32.Bb4 Qc7 33.Qd6 Qxd6 34.Bxd6 
Ne5 35.h3 Nc4+ 36.Bxc4 1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.28"]
[Round "11"]
[White "De Roode, Peter"]
[Black "Van Mil, Johannes"]
[Result "1-0"]
[WhiteElo "2250"]
[BlackElo "2340"]
[ECO "A86"]
[EventDate "1983.07.15"]
[PlyCount "112"]

1.c4 f5 2.Nc3 g6 3.d4 Bg7 4.g3 d6 5.d5 Nf6 6.Bg2 O-O 7.Nh3 Na6 8.O-O Nc5 
9.Qc2 a5 10.b3 Bd7 11.Bb2 a4 12.Rac1 axb3 13.axb3 c6 14.b4 Na6 15.dxc6 
Bxc6 16.Nd5 Bxd5 17.Bxd5+ Nxd5 18.Bxg7 Ndxb4 19.Qb2 Re8 20.Bh6 e5 21.Rfd1 
Qd7 22.f4 Nc6 23.fxe5 Nxe5 24.c5 d5 25.Nf4 Nc7 26.Rd2 Ng4 27.Nxd5 Nxd5 28.
Rxd5 Qe7 29.Bf4 Qxe2 30.Rd2 Qe4 31.Rcd1 Ne5 32.Bxe5 Rxe5 33.Rd8+ Rxd8 34.
Rxd8+ Kf7 35.Rd2 Qe1+ 36.Kg2 Qe4+ 37.Kg1 Re7 38.Qb3+ Qe6 39.Qb2 Qe1+ 40.
Kg2 Qe4+ 41.Kg1 Qe3+ 42.Kg2 Qxc5 43.Qh8 Qc6+ 44.Kh3 Qe8 45.Qxh7+ Kf6 46.
Rd6+ Ke5 47.Qxg6 Qxg6 48.Rxg6 Kd4 49.Kh4 b5 50.Kg5 Re5 51.Rb6 Kc5 52.Rb8 
b4 53.Kf4 Rd5 54.h4 Kc4 55.h5 b3 56.h6 Rb5 1-0

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.28"]
[Round "11"]
[White "Berg, Klaus"]
[Black "Hresc, Vladimir"]
[Result "1/2-1/2"]
[WhiteElo "2400"]
[BlackElo "2450"]
[ECO "A20"]
[EventDate "1983.07.15"]
[PlyCount "28"]

1.c4 e5 2.g3 Nf6 3.Bg2 Nc6 4.Nf3 h6 5.Nc3 Bb4 6.Nd5 a5 7.O-O O-O 8.d4 exd4
9.Nxd4 Nxd5 10.cxd5 Nxd4 11.Qxd4 d6 12.b3 Bc5 13.Qc3 Bb4 14.Qd4 Bc5 
1/2-1/2

[Event "2nd OHRA Open"]
[Site "Amsterdam NED"]
[Date "1983.07.28"]
[Round "11"]
[White "Van der Vliet, Fredrik"]
[Black "Grooten, Herman"]
[Result "1-0"]
[WhiteElo "2345"]
[BlackElo "2340"]
[ECO "A75"]
[EventDate "1983.07.15"]
[PlyCount "55"]

1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 exd5 5.cxd5 d6 6.Nc3 g6 7.Bf4 a6 8.a4 Bg7 
9.e4 O-O 10.Be2 Bg4 11.O-O Re8 12.Nd2 Bxe2 13.Qxe2 Nh5 14.Be3 Nd7 15.a5 
Qh4 16.Nc4 Bxc3 17.bxc3 Rxe4 18.Nxd6 Re5 19.Qf3 f5 20.Nxb7 Qc4 21.d6 f4 
22.Nxc5 Rd8 23.Nxd7 Rxd7 24.Qa8+ Kf7 25.Qh8 Qe4 26.Bd4 Re8 27.Qxh7+ Ke6 
28.Rae1 1-0

