[Event "casual"]
[Site "Winterswijk"]
[Date "1943.??.??"]
[EventDate "1943.??.??"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Max Euwe"]
[ECO "D17"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "80"]

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.Ne5 e6 7.f3
Bb4 8.Bg5 c5 9.dxc5 Qxd1+ 10.Rxd1 Nd5 11.e4 f6 12.exd5 exd5
13.Rxd5 fxg5 14.Bxc4 Be6 15.Rd1 Bxc4 16.Nxc4 O-O 17.O-O Bxc5+
18.Kh1 Nc6 19.Ne4 Be7 20.Rd7 Rab8 21.Na5 Nxa5 22.Rxe7 g4
23.Rd1 Rbd8 24.Rdd7 Rxd7 25.Rxd7 Rc8 26.Kg1 gxf3 27.gxf3 Rc1+
28.Kg2 Rc2+ 29.Rd2 Rxd2+ 30.Nxd2 Kf7 31.Kf2 Ke6 32.Ke3 Kd5
33.Kd3 Nc6 34.b3 Nd4 35.h4 Nf5 36.h5 Ng3 37.h6 gxh6 38.f4 h5
39.Ke3 Nf5+ 40.Kf3 Kd4 0-1

[Event "Bondswedstrijden"]
[Site "Enschede"]
[Date "1947.??.??"]
[EventDate "1947.08.18"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Hans Bouwmeester"]
[ECO "D28"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "43"]

1.d4 d5 2.c4 dxc4 3.Nf3 a6 4.e3 Nf6 5.Bxc4 e6 6.O-O c5 7.Qe2
Nc6 8.Nc3 b5 9.Bb3 Bb7 10.d5 exd5 11.e4 Be7 12.e5 Nd7 13.Nxd5
O-O 14.Bf4 c4 15.Bc2 Nb4 16.Nxb4 Bxb4 17.Bxh7+ Kh8 18.Bc2 Qe7
19.Ng5 g6 20.Qe3 Kg7 21.e6 Nf6 22.Nxf7 1-0

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1948.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Hans Bouwmeester"]
[ECO "B59"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "20"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 d6 6.Be2 e5 7.Nb3
Be7 8.f4 O-O 9.f5 Qb6 10.Bg5 Nxe4 0-1

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "11"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Max Euwe"]
[ECO "C91"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "53"]

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. d4 Bg4 10. a4 Qd7 11. Qd3 Bxf3 12. gxf3
exd4 13. cxd4 Nb4 14. Qf1 c5 15. Bd2 Nc6 16. d5 Ne5 17. Bd1 c4
18. Be2 Ng6 19. Qg2 Nh5 20. Qg4 Qxg4+ 21. fxg4 Nhf4 22. Kf1
Nxe2 23. Kxe2 Ne5 24. axb5 axb5 25. Rxa8 Rxa8 26. Na3 Rb8
27. g5 1/2-1/2

[Event "Amsterdam NED ch"]
[Site "Amsterdam NED ch"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "11"]
[Result "1-0"]
[White "Max Euwe"]
[Black "Jan Hein Donner"]
[ECO "C89"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "83"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5
7. Bb3 O-O 8. c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6
12. d4 Bd6 13. Re1 Qh4 14. g3 Qh3 15. Be3 Bg4 16. Qd3 f5
17. f4 Kh8 18. Bxd5 cxd5 19. Nd2 Rg8 20. Qf1 Qh5 21. a4 Qe8
22. axb5 Qxb5 23. Qxb5 axb5 24. Kf2 Bh5 25. Nf3 Rgb8 26. Bd2
Bf7 27. h3 Kg8 28. g4 fxg4 29. hxg4 Be8 30. f5 h5 31. Ne5 hxg4
32. Kg3 g6 33. Kxg4 gxf5+ 34. Kxf5 Rxa1 35. Rxa1 b4 36. Rg1+
Kh7 37. Rh1+ Kg8 38. cxb4 Bxb4 39. Bg5 Rb7 40. Bf6 Rh7 41. Ra1
Rb7 42. Rg1+ 1-0

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "7"]
[Result "1-0"]
[White "Miguel Najdorf"]
[Black "Jan Hein Donner"]
[ECO "D05"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "55"]

1.d4 e6 2.Nf3 Nf6 3.e3 d5 4.Bd3 Nbd7 5.b3 Bb4+ 6.c3 Bd6 7.c4
e5 8.c5 Bxc5 9.dxc5 e4 10.c6 bxc6 11.Nd4 Ne5 12.Be2 c5 13.Nc2
Qd6 14.Bb2 Bf5 15.Nd2 h5 16.h3 Nd3+ 17.Bxd3 exd3 18.Na3 Ne4
19.Qf3 Bg6 20.Qf4 f6 21.Nxe4 Bxe4 22.f3 Bg6 23.Kd2 Kd7 24.Rac1
Qxf4 25.exf4 Rhe8 26.Rhe1 Rxe1 27.Rxe1 h4 28.Nb1 1-0

[Event "Amsterdam (Netherlands)"]
[Site "It"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "O'Kelly"]
[Black "Jan Hein Donner"]
[ECO "A40"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "83"]

1.d4 e6 2.Nf3 f5 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.b3 d5 7.Bb2
Qe8 8.Ne5 Nbd7 9.Nd3 Bd6 10.c4 c6 11.Nd2 b6 12.Rc1 Ne4 13.Nf3
Bb7 14.Nfe5 Rc8 15.f3 Nef6 16.c5 bxc5 17.Nxc5 Nxc5 18.dxc5 Bc7
19.Qd4 Ba6 20.Rfe1 Bb5 21.a4 Ba6 22.Bc3 Rb8 23.Rb1 Rb7 24.b4
Bxe5 25.Qxe5 Qe7 26.Qe3 Nd7 27.f4 Bc4 28.Bd4 a6 29.Rec1 Rfb8
30.Rxc4 dxc4 31.Qc3 e5 32.fxe5 Qe6 33.e4 a5 34.b5 cxb5 35.exf5
Qxf5 36.Rf1 Qe6 37.Bxb7 Rxb7 38.Qf3 Rb8 39.c6 b4 40.cxd7 Qxd7
41.Bc5 h6 42.Bd6 1-0

[Event "Beverwijk"]
[Site "07"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Nicolas Rossolimo"]
[ECO "A84"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "63"]

1.d4 f5 2.c4 e6 3.e3 Nf6 4.f4 b6 5.Nf3 Bb7 6.Bd3 Bb4+ 7.Nbd2
Be4 8.Qc2 O-O 9.O-O Bxd2 10.Bxd2 d6 11.Be1 Bxd3 12.Qxd3 Ne4
13.Nd2 Nxd2 14.Bxd2 d5 15.Rfc1 c6 16.b4 Nd7 17.cxd5 cxd5
18.Rc6 Qe8 19.b5 Rf6 20.Rac1 Qh5 21.Bb4 h6 22.Rc8+ Rxc8
23.Rxc8+ Kh7 24.Rc7 Rf7 25.Qc2 Nf6 26.h3 Rxc7 27.Qxc7 Qe2
28.Qe5 Ne4 29.Qxe6 Qxe3+ 30.Kh2 Qxf4+ 31.Kg1 Qf2+ 32.Kh2
1/2-1/2

[Event "Amsterdam"]
[Site "13"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Nicolas Rossolimo"]
[ECO "E00"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "46"]

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Nf3 dxc4 5.Qa4+ Nbd7 6.Bg2 a6
7.Qxc4 b5 8.Qd3 Bb7 9.a4 Be4 10.Qd1 c5 11.O-O cxd4 12.Nxd4
Bxg2 13.Kxg2 b4 14.f3 Rc8 15.e4 Be7 16.Be3 O-O 17.Nd2 Nc5
18.N2b3 Qd7 19.Nxc5 Bxc5 20.Nc2 Qb7 21.Qe2 Nxe4 22.fxe4 Qxe4+
23.Kf2 Qxc2 0-1

[Event "Venice"]
[Site "Venice"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Vasily Smyslov"]
[Black "Jan Hein Donner"]
[ECO "C12"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "57"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bd2 Bxc3
7. bxc3 Ne4 8. Qg4 g6 9. Bc1 Nxc3 10. Bd3 c5 11. dxc5 Nc6
12. Nf3 Qa5 13. O-O Qxc5 14. Qh4 Ne7 15. Qf6 Rh7 16. a4 Qc7
17. Ba3 Ne4 18. Bxe4 dxe4 19. Nd2 Nd5 20. Qh4 Qxe5 21. Nxe4 g5
22. Qg4 Bd7 23. Nd6+ Kd8 24. Nxb7+ Kc8 25. Nd6+ Kc7 26. Qc4+
Bc6 27. Qc5 Qf4 28. c4 Nb6 29. a5 1-0

[Event "Dubrovnik olm"]
[Site "YUG"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "George Mortimer Kramer"]
[ECO "D19"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "123"]

1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.Nf3 dxc4 5.a4 Bf5 6.e3 e6 7.Bxc4
Bb4 8.O-O O-O 9.Qe2 h6 10.e4 Bh7 11.e5 Nd5 12.Bd3 Bxd3 13.Qxd3
Nd7 14.Bd2 Be7 15. Nxd5 cxd5 16.a5 a6 17.Ne1 b5 18.Qb3 Rc8
19.Nc2 Rc4 20.Qd3 Qa8 21.Ne3 Rc6 22.f4 f5 23.g4 fxg4 24.Qg6
Qe8 25.Qxg4 Nb8 26.Kh1 Kh7 27.Rg1 g6 28.Raf1 Rg8 29.Qh3 Bf8
30.Ng4 Nd7 31.f5 g5 32.Ne3 Nb8 33.fxe6 Qxe6 34.Qxe6 Rxe6
35.Nxd5 Bg7 36.Bc3 Rd8 37.Nb4 Ree8 38.d5 Bxe5 39.Bxe5 Rxe5
40.Rf7+ Kg6 41.Rgf1 Re4 42.Nxa6 Nxa6 43.R7f6+ Kh5 44.Rxa6 Rxd5
45.Rf2 Rd1+ 46.Kg2 Rg4+ 47.Kf3 Rf4+ 48.Kg2 Rg4+ 49.Kf3 Rf4+
50.Kg2 Rxf2+ 51.Kxf2 Rd2+ 52.Kg3 Rxb2 53.Rb6 b4 54.a6 Rb3+
55.Kg2 Ra3 56.Rxb4 Rxa6 57.h3 Kg6 58.h4 Kh5 59. hxg5 hxg5
60.Kg3 Ra3+ 61.Kg2 g4 62.Rb8 1/2-1/2

[Event "Dubrovnik olm"]
[Site "YUG"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Alejandro Maccioni"]
[ECO "E33"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "104"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 Nc6 5.Nf3 d6 6.a3 Bxc3+
7.Qxc3 O-O 8. b4 Qe7 9.Bb2 Re8 10.e3 e5 11.dxe5 Nxe5 12.Nxe5
dxe5 13.Bd3 c5 14.b5 b6 15.O-O Bb7 16.Rae1 Ne4 17.Qc2 Nf6
18.f4 e4 19.Be2 a6 20.bxa6 Bxa6 21.Qc3 Red8 22.g4 Ne8 23.g5 f5
24.h4 Qf7 25.h5 Nd6 26.Rf2 Rd7 27.Rc1 Rad8 28. Rh2 Bxc4 29.g6
hxg6 30.hxg6 Qe6 31.Bxc4 Nxc4 32.Qxc4 Qxc4 33.Rxc4 Rd1+
34. Kg2 R8d2+ 35.Kg3 Rxh2 36.Kxh2 Rd2+ 37.Kg3 Rxb2 38.Ra4 Kf8
39.Ra7 Re2 40. a4 Rxe3+ 41.Kh4 Rd3 42.Rf7+ Kg8 43.Rb7 Kf8
44.Rf7+ Kg8 45.Rb7 Rd8 46.Rxb6 Kf8 47.Rc6 e3 48.Rxc5 Re8
49.Rc1 Re4 50.Kg5 Rxa4 51.Re1 Ra3 52.Kxf5 Ke7 1/2-1/2

[Event "Dubrovnik olm"]
[Site "YUG"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "4"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Herman Pilnik"]
[ECO "A10"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1.c4 g6 2.g3 Bg7 3.Bg2 Nf6 4.Nc3 O-O 5.d4 h6 6.Nf3 d6 7.O-O c6
8.e4 Bg4 9.h3 Bxf3 10.Qxf3 Nfd7 11.Ne2 a5 12.Qd3 e5 13.Be3 Na6
14.f4 exd4 15.Bxd4 Bxd4+ 16.Nxd4 Qb6 17.Rf2 Nac5 18.Qc2 Rae8
19.Rd1 Nf6 20.e5 dxe5 21.fxe5 Nh5 22.Qc3 Rd8 23.Rfd2 Ne6
24.Kh2 Nxd4 25.Rxd4 Rxd4 26.Rxd4 Ng7 27.Rd7 Ne6 28.Qd2 Rd8
29.Rxd8+ Qxd8 30.Qxd8+ Nxd8 31.Kg1 Kf8 32.Kf2 Ke7 33.Ke3 h5
34.h4 Ne6 35.Bh3 Nc5 36.Kd4 b6 37.Bg2 Kd7 38.b3 Ne6+ 39.Ke4
Ke7 40. Kd3 Nc5+ 41.Ke3 1/2-1/2

[Event "Dubrovnik olm"]
[Site "YUG"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "5"]
[Result "0-1"]
[White "Hartvig Nielsen"]
[Black "Jan Hein Donner"]
[ECO "C86"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "74"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Qe2 b5 7.Bb3
d6 8.a4 Rb8 9.axb5 axb5 10.c3 Be6 11.Bxe6 fxe6 12.d4 exd4
13.cxd4 Qd7 14.Rd1 d5 15.Nbd2 O-O 16.Ne5 Qe8 17.exd5 Nxd5
18.Nb3 Nxe5 19.Qxe5 Bd6 20.Qe4 Qh5 21.Rd3 Qxh2+ 22.Kf1 Qh1+
23.Ke2 Qh5+ 24.Rf3 Rxf3 25.Qxf3 Qg6 26.Nd2 Rf8 27.Qe4 Nf4+
28.Kf1 Qg5 29.Qf3 Qh4 30.g3 Qh3+ 31.Kg1 Nd5 32.Qg2 Qg4 33. Qe4
Nf4 34.b3 Nh3+ 35.Kf1 Qd1+ 36.Kg2 Nxf2 37.Qh4 Bxg3 0-1

[Event "Dubrovnik olm"]
[Site "YUG"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "7"]
[Result "1-0"]
[White "Aarne Ilmari Niemela"]
[Black "Jan Hein Donner"]
[ECO "E47"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "59"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 c5 6.a3 cxd4 7.exd4
Bxc3+ 8. bxc3 b6 9.Nf3 Nc6 10.Bg5 h6 11.Bh4 d6 12.Nd2 Ba6
13.Qf3 d5 14.O-O Rc8 15. Rae1 dxc4 16.Bc2 g5 17.Bg3 Kg7 18.Ne4
Ne8 19.Nd2 Ne7 20.Qh5 Bb7 21.Be5+ f6 22.f4 fxe5 23.fxg5 Nf5
24.Rxf5 Rxf5 25.Qxh6+ Kf7 26.Bxf5 exf5 27.g6+ Kf6 28.dxe5+ Ke7
29.Qh7+ Ke6 30.Qf7# 1-0

[Event "Dubrovnik olm"]
[Site "YUG"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "12"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Aris Othoneos"]
[ECO "D72"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "75"]

1.d4 Nf6 2.c4 g6 3.g3 d5 4.cxd5 Nxd5 5.e4 Nb6 6.Bg2 Bg7 7.Ne2
c6 8.Nbc3 O-O 9.O-O Na6 10.a4 c5 11.d5 Nc4 12.b3 Na5 13.Rb1
Bg4 14.Nb5 Qc8 15.Na3 Bh3 16.Bxh3 Qxh3 17.Bd2 Nb4 18.Nc2 Qd7
19.Nxb4 cxb4 20.Bxb4 b6 21.Nd4 Nb7 22.Nc6 Rfe8 23.Rc1 Nd8
24.Qd3 Nxc6 25.Rxc6 Rac8 26.Rfc1 Rxc6 27.Rxc6 e6 28.Qc4 exd5
29.exd5 Be5 30.d6 Qh3 31.Rc7 Qf5 32.Rxa7 Rd8 33.Qc6 Bd4
34. Be1 Qb1 35.Re7 Bc5 36.Re8+ Rxe8 37.Qxe8+ Kg7 38.d7 1-0

[Event "Dubrovnik olm"]
[Site "YUG"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "14"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Solis Felipe Pinzon"]
[ECO "E67"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "67"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nbd7 7.O-O
e5 8.e4 exd4 9.Nxd4 a5 10.h3 Nc5 11.Be3 Re8 12.Qc2 Bd7 13.Rfe1
Qc8 14.Kh2 h6 15. Rad1 Kh7 16.f3 Nh5 17.Nd5 Qd8 18.f4 Nf6
19.Bf2 Nxd5 20.cxd5 Qf6 21.Rd2 b6 22.Rde2 Rab8 23.e5 dxe5
24.fxe5 Qd8 25.e6 fxe6 26.dxe6 Bxd4 27.exd7 Rxe2 28.Qxe2 Bf6
29.Bxc5 bxc5 30.Qe8 Bg7 31.Qf7 Qf6 32.Qe8 Rd8 33.Re7 Qf8
34. Qxf8 1-0

[Event "Dubrovnik olm"]
[Site "YUG"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "15"]
[Result "1-0"]
[White "Hans Lambert"]
[Black "Jan Hein Donner"]
[ECO "C03"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "31"]

1.e4 e6 2.d4 d5 3.Nd2 a6 4.Ngf3 c5 5.exd5 exd5 6.c4 dxc4
7.Nxc4 b5 8. Nce5 Bb7 9.a4 c4 10.axb5 axb5 11.Rxa8 Bxa8
12.Bxc4 Bb4+ 13.Kf1 bxc4 14. Qa4+ Kf8 15.Qxb4+ Ne7 16.Qxb8 1-0

[Event "Amsterdam"]
[Site "01"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "T Van Scheltinga"]
[Black "Jan Hein Donner"]
[ECO "E56"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "110"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 c5 6.Nf3 d5 7.O-O
Nc6 8.Ne2 cxd4 9.exd4 dxc4 10.Bxc4 a6 11.Bg5 h6 12.Bh4 b5
13.Bd3 Bb7 14.Rc1 Be7 15.Bb1 Qb6 16.a3 Rfd8 17.Qd3 Rd7 18.Rfd1
Rad8 19.Bg3 Bd6 20.Bh4 Be7 21.Bg3 Bd6 22.Bh4 g5 23.Nxg5 hxg5
24.Bxg5 Kg7 25.Ng3 Rh8 26.Qf3 Ng8 27.Nh5+ Kf8 28.Be4 Nxd4
29.Rxd4 Rxh5 30.Be3 Bxh2+ 31.Kf1 Rxd4 32.Bxb7 Rc5 33.Rxc5 Qxc5
34.Bxd4 Qxd4 35.g3 Qxb2 36.Kg2 Bxg3 37.Qxg3 a5 38.Qb8+ Kg7
39.Qg3+ Kf8 40.Qb8+ Kg7 41.Qg3+ Kh7 42.Qd3+ f5 43.Bc8 Nh6
44.Qd7+ Qg7+ 45.Qxg7+ Kxg7 46.Bxe6 Kf6 47.Bd7 b4 48.axb4 axb4
49.Kf3 Ke5 50.Ke3 f4+ 51.Kd3 Kd5 52.Ba4 Ng4 53.Bb3+ Kc5 54.Ke4
Nxf2+ 55.Kxf4 Kd4 1/2-1/2

[Event "Amsterdam"]
[Site "02"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Samuel Reshevsky"]
[ECO "E33"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "58"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 Nc6 5.Nf3 d6 6.a3 Bxc3+
7.Qxc3 a5 8.b3 O-O 9.Bb2 Re8 10.Rd1 Qe7 11.d5 Nb8 12.dxe6 fxe6
13.g3 b6 14.Bg2 Bb7 15.O-O Nbd7 16.Ne1 Bxg2 17.Nxg2 Nc5 18.f3
Rab8 19.a4 d5 20.Qc2 Rbd8 21.Ba3 d4 22.Ne1 e5 23.e4 dxe3
24.Nd3 e4 25.Nxc5 exf3 26.Rxf3 Rxd1+ 27.Qxd1 e2 28.Qe1 bxc5
29.Bc1 Rd8 0-1

[Event "Amsterdam"]
[Site "03"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Gudbjartur H Gudmundsson"]
[Black "Jan Hein Donner"]
[ECO "A83"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "56"]

1.d4 f5 2.e4 fxe4 3.Nc3 Nf6 4.Bg5 Nc6 5.d5 Ne5 6.Qd4 Nf7
7.Bxf6 exf6 8.Nxe4 f5 9.Ng3 g6 10.h4 Bh6 11.d6 O-O 12.Bc4 Bg7
13.Qd3 Bxb2 14.Rb1 Qf6 15.N1e2 Be5 16.dxc7 Bxc7 17.h5 Kg7
18.f4 d5 19.Bxd5 Bb6 20.c4 Nh6 21.hxg6 hxg6 22.Qa3 Ng4 23.Rxb6
axb6 24.Qxa8 Qa1+ 25.Kd2 Qb2+ 26.Ke1 Re8 27.Be4 Qb4+ 28.Kd1
fxe4 0-1

[Event "Amsterdam"]
[Site "04"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Eugenio Szabados"]
[ECO "B91"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "92"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.g3 e5 7.Nde2
Be6 8.Bg2 Nbd7 9.h3 b5 10.f4 b4 11.Nd5 Bxd5 12.exd5 Be7
13.fxe5 Nxe5 14.Nd4 Rc8 15.O-O O-O 16.Nf5 Qc7 17.Nxe7+ Qxe7
18.Bg5 Qa7+ 19.Kh1 Ne8 20.a3 f6 21.Bc1 Qc5 22.axb4 Qxb4 23.Rf4
Qc5 24.Be4 g6 25.c3 f5 26.Bg2 Ng7 27.Kh2 a5 28.Rfa4 Nh5 29.Qe2
Rfe8 30.Rxa5 Qb6 31.Ra6 Qc5 32.R1a5 Qc7 33.Qd1 Nc4 34.Rb5 Qe7
35.Bf3 Ne3 36.Bxe3 Qxe3 37.Kg2 f4 38.g4 Ng3 39.Rb4 Ne4 40.Bxe4
Rxe4 41.Rxe4 Qxe4+ 42.Qf3 Qe1 43.Rxd6 Rb8 44.b4 Ra8 45.Rd8+
Rxd8 46.Qxf4 Rf8 0-1

[Event "Amsterdam"]
[Site "05"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Svetozar Gligoric"]
[Black "Jan Hein Donner"]
[ECO "D43"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "86"]

1.d4 d5 2.c4 e6 3.Nc3 c6 4.Nf3 Nf6 5.Bg5 Be7 6.e3 Ne4 7.Bxe7
Qxe7 8.Rc1 O-O 9.Bd3 Nxc3 10.Rxc3 Nd7 11.O-O g6 12.Qe2 e5
13.dxe5 Nxe5 14.Nxe5 Qxe5 15.cxd5 cxd5 16.Rb3 Qe7 17.Qd2 Be6
18.Qb4 Qxb4 19.Rxb4 b6 20.Ba6 Bc8 21.Be2 Be6 22.Rd1 Rac8 23.a3
Rc5 24.Kf1 Rfc8 25.Ke1 Rc2 26.Bd3 Rc1 27.Rd4 Kf8 28.Kd2 Rxd1+
29.Kxd1 h5 30.Ba6 Rc7 31.Kd2 Ke7 32.Rd3 Kd6 33.Rc3 Rc5 34.b4
Rxc3 35.Kxc3 h4 36.Kd4 g5 37.f4 f6 38.Bb7 Bf7 39.Bc8 Bg6
40.Bg4 Be8 41.Bf3 Bf7 42.f5 Bg8 43.Bh5 Ke7 1/2-1/2

[Event "Amsterdam"]
[Site "06"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Harry Golombek"]
[ECO "E22"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "73"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 Nc6 5.Nf3 Ne4 6.e3 O-O 7.Bd2
Nxc3 8.bxc3 Be7 9.Bd3 d6 10.Qc2 h6 11.g4 e5 12.h3 Bh4 13.Ke2
exd4 14.cxd4 Re8 15.Rag1 b6 16.Be4 Bb7 17.Bd5 Na5 18.Bxa5 Bxd5
19.cxd5 bxa5 20.Rb1 Bf6 21.Rb7 Re7 22.Rhb1 Qd7 23.Qc6 Qc8
24.R1b5 a6 25.Rxa5 Rb8 26.Rxb8 Qxb8 27.Rxa6 Qb2+ 28.Kf1 Qb1+
29.Kg2 Qe4 30.Ra8+ Kh7 31.Kg3 h5 32.a4 g6 33.Qb7 h4+ 34.Kg2
Rd7 35.a5 Bg5 36.Rc8 Bd8 37.Qc6 1-0

[Event "Amsterdam"]
[Site "09"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "C B Van den Berg"]
[ECO "E22"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "52"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 c5 5.dxc5 Na6 6.a3 Bxc5 7.Nf3
O-O 8.Bg5 Be7 9.Qc2 Qa5 10.e4 d5 11.e5 d4 12.exf6 gxf6 13.Bd2
dxc3 14.Bxc3 Bb4 15.Rc1 Bxc3+ 16.Qxc3 Qxc3+ 17.Rxc3 e5 18.Bd3
Nc5 19.Bc2 Bg4 20.b4 Ne6 21.Be4 a5 22.O-O axb4 23.axb4 Ra4
24.Rb1 Rd8 25.h3 Nf4 26.Kh2 Bc8 1/2-1/2

[Event "Amsterdam"]
[Site "10"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Cenek Kottnauer"]
[Black "Jan Hein Donner"]
[ECO "D47"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "58"]

1.c4 e6 2.Nc3 d5 3.d4 c6 4.e3 Nf6 5.Nf3 Nbd7 6.Bd3 dxc4 7.Bxc4
b5 8.Bd3 Bb7 9.Qe2 a6 10.e4 c5 11.d5 c4 12.Bc2 exd5 13.e5 Ne4
14.O-O Ndc5 15.Rd1 Nxc3 16.bxc3 Qc7 17.Bf4 Ne6 18.Bg3 g6
19.Qe3 O-O-O 20.a4 b4 21.cxb4 Bxb4 22.Nd4 Bc5 23.Nxe6 fxe6
24.Qe2 Qc6 25.Qf1 d4 26.Rac1 d3 27.Bb3 cxb3 28.Rxc5 Qxc5
29.Rc1 Qc2 0-1

[Event "Amsterdam"]
[Site "12"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Foltys"]
[Black "Jan Hein Donner"]
[ECO "D45"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "125"]

1.c4 Nf6 2.Nf3 e6 3.Nc3 d5 4.d4 c6 5.e3 Nbd7 6.Qc2 Bb4 7.a3
Ba5 8.Bd3 Qe7 9.O-O dxc4 10.Bxc4 e5 11.Bd2 Bc7 12.Ba2 O-O
13.Nb5 Bb6 14.Bb4 c5 15.dxc5 Bxc5 16.Bxc5 Nxc5 17.Rfc1 b6
18.b4 Na6 19.Nc7 Rb8 20.Nxa6 Bxa6 21.Qc7 Rbe8 22.Rc2 Bb7
23.Rac1 Bd5 24.Bxd5 Nxd5 25.Qxe7 Rxe7 26.Rd1 Nf6 27.Kf1 g6
28.Ke2 Kg7 29.Rc6 Ne4 30.Nd2 Nxd2 31.Rxd2 f5 32.Rdd6 Rff7
33.f3 e4 34.f4 Rd7 35.Kd2 Rxd6+ 36.Rxd6 Rc7 37.Rd8 Kf7 38.Ra8
Rd7+ 39.Kc2 Rd3 40.Rxa7+ Ke6 41.a4 Kd5 42.Rb7 Kc4 43.Rxb6 Rxe3
44.Kd2 Ra3 45.a5 Ra2+ 46.Ke3 Rxg2 47.a6 Ra2 48.h4 Ra3+ 49.Kd2
Kd5 50.Rb5+ Kc6 51.Re5 Kb6 52.b5 Rh3 53.Re8 Rxh4 54.Rb8+ Ka7
55.Rb7+ Ka8 56.Ke3 Rh1 57.Kd4 Rd1+ 58.Kc5 g5 59.fxg5 e3 60.Re7
f4 61.b6 Rd8 62.a7 e2 63.Kb5 1-0

[Event "Amsterdam"]
[Site "14"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Haije J Kramer"]
[Black "Jan Hein Donner"]
[ECO "C07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "78"]

1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 Qxd5 5.Ngf3 cxd4 6.Bc4 Qd8
7.O-O Nc6 8.Nb3 Nf6 9.Qe2 a6 10.Rd1 b5 11.Bd3 Qb6 12.a4 b4
13.Nbxd4 Nxd4 14.Nxd4 Be7 15.Bg5 Bb7 16.a5 Qc5 17.Be3 Qc7
18.Nf3 Nd5 19.Bb6 Nxb6 20.axb6 Qxb6 21.Ne5 O-O 22.Bxh7+ Kxh7
23.Qh5+ Kg8 24.Rd3 f6 25.Ng6 Qc5 26.Qh3 Bc8 27.Rg3 Bd6 28.Rg4
f5 29.Rg5 Be7 30.Rh5 Rf6 31.Rh8+ Kf7 32.Qf3 Rxg6 33.Qxa8 Bd7
34.Qg8+ Kf6 35.Re1 Qd5 36.g3 Bc6 37.f3 Bc5+ 38.Kg2 Qxf3+
39.Kh3 Qg4# 0-1

[Event "Amsterdam"]
[Site "15"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Savielly Tartakower"]
[ECO "D07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "77"]

1.d4 d5 2.c4 Nc6 3.Nf3 Bg4 4.Qa4 Bxf3 5.exf3 e6 6.Nc3 dxc4
7.Be3 a6 8.Qxc4 Bd6 9.Be2 Nge7 10.O-O b5 11.Qd3 Nb4 12.Qd2
Nbd5 13.a4 b4 14.Nxd5 Nxd5 15.Bc4 Nxe3 16.Qxe3 O-O 17.a5 Qf6
18.Rfd1 e5 19.d5 Rfe8 20.g3 Qg6 21.Rdc1 e4 22.f4 h5 23.Bb3 h4
24.Rc6 Qh5 25.Re1 g6 26.Qd4 hxg3 27.hxg3 Bxf4 28.Rxe4 Qf3
29.Bc2 Bd6 30.Rxa6 Rab8 31.Rc6 f5 32.Re3 Rxe3 33.Qxe3 Qxe3
34.fxe3 Rb5 35.a6 Ra5 36.Kf2 Kg7 37.Bd3 Rxd5 38.a7 Bc5 39.a8=Q
1-0

[Event "Amsterdam"]
[Site "16"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Herman Pilnik"]
[Black "Jan Hein Donner"]
[ECO "C12"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "64"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Bb4 5.e5 h6 6.Bd2 Bxc3 7.bxc3
Ne4 8.Bd3 Nxd2 9.Qxd2 c5 10.f4 Qa5 11.Nf3 Nc6 12.dxc5 Qxc5
13.Nd4 Bd7 14.Rb1 Na5 15.Nb5 Bxb5 16.Bxb5+ Nc6 17.Qd4 Qxb5
18.Rxb5 Nxd4 19.cxd4 b6 20.Kd2 Rc8 21.c3 Rc4 22.Rb4 Rxb4
23.cxb4 Kd7 24.Rc1 Rc8 25.Rxc8 Kxc8 26.g4 g6 27.h4 Kd7 28.b5
Ke7 29.Ke3 Kd7 30.h5 gxh5 31.Kf3 Ke7 32.gxh5 Kd7 1/2-1/2

[Event "Amsterdam"]
[Site "17"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Vasja Pirc"]
[ECO "E25"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "64"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.f3 d5 7.cxd5
Nxd5 8.dxc5 Bd7 9.e4 Nf6 10.Rb1 O-O 11.Qd4 Nc6 12.Qe3 Qa5
13.g4 Rfd8 14.g5 Ne8 15.f4 Rac8 16.Kf2 Ne7 17.c4 Ng6 18.Nf3
Rxc5 19.h4 e5 20.f5 Nf4 21.Bd2 Qc7 22.Bb4 Rc6 23.Bc3 f6 24.h5
Bc8 25.h6 Rxc4 26.Bxc4+ Qxc4 27.Bb4 Rd3 28.Rbc1 Qa2+ 29.Nd2
Rxe3 30.Rxc8 Re2+ 31.Kf3 Qf7 32.g6 Qd7 0-1

[Event "Amsterdam"]
[Site "18"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Gideon Stahlberg"]
[Black "Jan Hein Donner"]
[ECO "E21"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "56"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 c5 5.Bd2 O-O 6.dxc5 Nc6 7.g3
Bxc5 8.Bg2 d5 9.cxd5 Nxd5 10.O-O Nxc3 11.Bxc3 Qe7 12.Ne5 Nxe5
13.Bxe5 f6 14.Bc3 Rb8 15.Rc1 b6 16.Qa4 e5 17.Rfd1 Be6 18.Bd5
Bxd5 19.Rxd5 Rbd8 20.Rcd1 Rxd5 21.Rxd5 Rd8 22.e4 a5 23.Kg2 Kf8
24.Qc6 Rxd5 25.exd5 Qd6 26.Qa8+ Kf7 27.Qb7+ Qe7 28.Qa6 e4
1/2-1/2

[Event "Amsterdam"]
[Site "19"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Petar Trifunovic"]
[ECO "D79"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "59"]

1.d4 Nf6 2.c4 g6 3.g3 c6 4.Bg2 d5 5.Nf3 Bg7 6.O-O O-O 7.cxd5
cxd5 8.Ne5 Ng4 9.Nxg4 Bxg4 10.Nc3 Nc6 11.Be3 e5 12.Nxd5 exd4
13.Bc1 Re8 14.Re1 Rc8 15.a3 d3 16.Qxd3 Nd4 17.Be3 Bf5 18.Qd2
Nb3 19.Qb4 Nxa1 20.Rxa1 Rc2 21.Rd1 Bxb2 22.Bxa7 Rcxe2 23.Bf3
Rc2 24.Bd4 Bxd4 25.Qxd4 Rc6 26.h4 h5 27.Qf4 Qd6 28.Qxd6 Rxd6
29.Ne7+ Rxe7 30.Rxd6 1/2-1/2

[Event "Venice"]
[Site "Venice"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Enrico Paoli"]
[ECO "E68"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nbd7 7.O-O
e5 8.e4 exd4 9.Nxd4 Re8 10.Re1 c6 11.h3 Nc5 12.Qc2 a5 13.Be3
a4 14.Rad1 Qa5 15.Bf4 Bf8 16.Bf1 Ne6 17.Nxe6 Rxe6 18.g4 Bd7
19.f3 b5 20.cxb5 cxb5 21.Qd2 Bc6 22.Ne2 Qxd2 23.Rxd2 d5 24.e5
Nd7 25.Nd4 Bc5 26.Rc1 Bxd4+ 27.Rxd4 Nb6 28.Rc5 Nc4 29.b3 axb3
30.axb3 Na5 31.Rc3 Nb7 32.Be3 Kg7 33.Bg5 Na5 34.Bf6+ Kf8 35.f4
Rb8 36.Rb4 Ree8 37.f5 gxf5 38.gxf5 Bd7 39.Rf3 Nc6 40.Rh4 Bxf5
41.Rxf5 1-0

[Event "match Discendo Discimus"]
[Site "The Hague"]
[Date "1950.02.18"]
[EventDate "1950.??.??"]
[Round "2"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Max Euwe"]
[ECO "C65"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "146"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 d6 5.c3 Bd7 6.O-O g6 7.Re1
Bg7 8.d4 O-O 9.Bf1 Bg4 10.d5 Ne7 11.h3 Bxf3 12.Qxf3 Nd7 13.Nd2
f5 14.exf5 Rxf5 15.Qd1 Nxd5 16.Bc4 N7b6 17.Ne4 c6 18.Bb3 Bf8
19.g4 Rf7 20.Ng5 Rd7 21.a4 Bh6 22.a5 Bxg5 23.Bxg5 Qxg5 24.axb6
a6 25.Bxd5+ cxd5 26.Qxd5+ Rf7 27.Rf1 Qd8 28.Rad1 Qxb6 29.Qxd6
Qxb2 30.Qxe5 Raf8 31.Rb1 Qa2 32.Ra1 Qc4 33.Rae1 Rf3 34.Re3 Qf7
35.Rxf3 Qxf3 36.Qe6+ Rf7 37.Qe8+ Kg7 38.Qe5+ Kh6 39.Qd4 Qf4
40.Qxf4+ Rxf4 41.Rb1 b5 42.Ra1 Ra4 43.Rc1 Rc4 44.Ra1 Rxc3
45.Rxa6 Rxh3 46.Rb6 Rb3 47.Rb7 Kg5 48.Rxh7 Kxg4 49.Kg2 Rc3
50.Rf7 Rc6 51.f3+ Kg5 52.Rb7 Rc5 53.Kg3 Kf5 54.f4 Rc3+ 55.Kf2
Rb3 56.Rb6 b4 57.Ke2 Rb1 58.Ke3 Re1+ 59.Kf3 Rf1+ 60.Kg3 Rb1
61.Kf3 b3 62.Rb5+ Ke6 63.Kg2 Kd6 64.Kf3 Kc6 65.Rb8 Kc5 66.Rc8+
Kb4 67.Rb8+ Ka3 68.Ra8+ Kb2 69.Ra6 Rf1+ 70.Ke3 Re1+ 71.Kf2 Re4
72.Kf3 Rb4 73.Rxg6 Kc3 0-1

[Event "NED-ch"]
[Site "Amsterdam"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "C B Van den Berg"]
[ECO "D22"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "66"]

1.d4 d5 2.c4 dxc4 3.Nf3 a6 4.e3 Bg4 5.h3 Bh5 6.g4 Bg6 7.Ne5
Be4 8.f3 Bxb1 9.Rxb1 e6 10.Bxc4 c6 11.e4 b5 12.Bb3 Bb4+ 13.Kf1
Ne7 14.Be3 Nd7 15.Nd3 Ba5 16.f4 f5 17.gxf5 exf5 18.Qh5+ g6
19.Qh6 fxe4 20.Qg7 Rf8 21.Ne5 Nxe5 22.Qxe5 Bc7 23.Qxe4 Bxf4
24.Kg2 Qd6 25.Rhe1 Kd7 26.d5 cxd5 27.Qd3 Rf5 28.Rbc1 Rg5+
29.Kh1 Rg3 30.Qd2 Rxh3+ 31.Kg1 Rf8 32.Bxf4 Rxf4 33.Qg2 Rhh4
0-1

[Event "Venice"]
[Site "Venice"]
[Date "1950.??.??"]
[EventDate "1950.??.??"]
[Round "5"]
[Result "0-1"]
[White "Eugenio Szabados"]
[Black "Jan Hein Donner"]
[ECO "E18"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "112"]

1.d4 Nf6 2.Nf3 d5 3.c4 e6 4.g3 Be7 5.Bg2 O-O 6.O-O b6 7.Nc3
Bb7 8.Ne5 Qc8 9.Bg5 dxc4 10.Qa4 Bxg2 11.Kxg2 h6 12.Bxf6 Bxf6
13.Qxc4 Bxe5 14.dxe5 Qb7+ 15.Qe4 Qxe4+ 16.Nxe4 c5 17.Rfd1 Nc6
18.f4 Rfd8 19.Kf2 Kf8 20.e3 Rxd1 21.Rxd1 Rd8 22.Rxd8+ Nxd8
23.Ke2 Ke7 24.Kd3 Nb7 25.Kc4 a6 26.a4 Kd7 27.b4 cxb4 28.Kxb4
Kc6 29.Nc3 Nc5 30.h4 h5 31.Ka3 Nd3 32.Kb3 b5 33.axb5+ axb5
34.Ne2 Kc5 35.Nc3 Nf2 36.Kc2 Kc4 37.Ne2 b4 38.Nd4 Ne4 39.f5
Kd5 40.fxe6 fxe6 41.Ne2 Kxe5 42.Kb3 Nf6 43.Kxb4 Ke4 44.Nd4 e5
45.Nc6 Ng4 46.Kc5 Kxe3 47.Kd5 Kf3 48.Ne7 e4 49.Ke6 Kxg3
50.Nf5+ Kf2 51.Nd4 Nh6 52.Ke5 e3 53.Kf4 g6 54.Nc2 Nf5 55.Kg5
Nxh4 56.Kxh4 e2 0-1

[Event "Venice"]
[Site "Venice ITA"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "14"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Moshe Czerniak"]
[ECO "E60"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "125"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 c5 6.d5 d6 7.e4 e6
8.Nge2 exd5 9.cxd5 Re8 10.a4 Na6 11.f3 Nb4 12.Be3 b6 13.Qd2
Ba6 14.O-O Nd7 15.f4 f5 16.Nb5 Bxb5 17.axb5 Nf6 18.e5 Ng4
19.Rad1 dxe5 20.fxe5 Nxe3 21.Qxe3 Rxe5 22.Qf2 Qd6 23.Nf4 Bh6
24.Rfe1 Rae8 25.h4 Bxf4 26.gxf4 Rxe1+ 27.Rxe1 Rxe1+ 28.Qxe1
Kf7 29.Qd2 Qf6 30.Qe1 Qd4+ 31.Kh1 Nxd5 32.Qa1 Nf6 33.Qxa7+ Qd7
34.Qxd7+ Nxd7 35.Bd5+ Ke7 36.Kg2 Nf6 37.Bc4 Ne4 38.Bd3 Nd6
39.Kg3 h5 40.b3 c4 41.bxc4 Nb7 42.Be2 Na5 43.Kf2 Kd6 44.Bf3
Nxc4 45.Bc6 Ke6 46.Ke2 Nd6 47.Kd3 Ke7 48.Kd4 Nf7 49.Kd5 Nd8
50.Ba8 Ne6 51.Kc6 Nxf4 52.Kxb6 Ne6 53.Ka7 Kd6 54.b6 Nc5 55.b7
Nd7 56.b8=Q+ Nxb8 57.Kxb8 Ke5 58.Kc7 Kf4 59.Kd6 Kg3 60.Ke5
Kxh4 61.Kf4 g5+ 62.Kxf5 g4 63.Kg6 1/2-1/2

[Event "Venice"]
[Site "Venice, Italy"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "13"]
[Result "1/2-1/2"]
[White "Ludek Pachman"]
[Black "Jan Hein Donner"]
[ECO "C77"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "32"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3 d6 6.c4 Bg4 7.Be3 g6
8.Nc3 Bg7 9.h3 Bxf3 10.Qxf3 Nd7 11.O-O Nd4 12.Bxd7+ Qxd7
13.Qg4 Ne6 14.Nd5 b5 15.Qh4 Qd8 16.Qxd8+ Kxd8 1/2-1/2

[Event "Venice, Italy"]
[Site "Venice, Italy"]
[Date "1950.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Alexander Kotov"]
[ECO "D44"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "50"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 Nf6 5. Bg5 dxc4 6. a4 Bb4
7. e4 Bxc3+ 8. bxc3 Qa5 9. e5 Ne4 10. Bd2 Qd5 11. Qc2 c5
12. Be3 Nc6 13. Be2 cxd4 14. cxd4 Nb4 15. Qc1 c3 16. O-O Bd7
17. Ne1 Rc8 18. f3 Nd2 19. Bxd2 Na2 20. Rxa2 Qxa2 21. Bg5 h6
22. Bd3 hxg5 23. Qxg5 Qd2 24. f4 Bc6 25. Qg3 g6 0-1

[Event "Cheltenham"]
[Site "Cheltenham"]
[Date "1951.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Efim Bogoljubov"]
[Black "Jan Hein Donner"]
[ECO "C11"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "41"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bd3 c5 5.Nf3 cxd4 6.Nxd4 e5 7.Nf3
dxe4 8.Bb5+ Nbd7 9.Nxe5 Bb4 10.Qd4 Bxc3+ 11.Qxc3 O-O 12.O-O
Qe7 13.Bxd7 Bxd7 14.Bg5 Bb5 15.Ng4 Rac8 16.Qg3 Kh8 17.Qh4 Rc6
18.Rfe1 Re6 19.Re3 Qc5 20.Nxf6 Qf5 21.g4 1-0

[Event "Hastings Christmas 1951-52"]
[Site "ENG"]
[Date "1951.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Daniel Yanofsky"]
[ECO "D72"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "88"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d5 5.cxd5 Nxd5 6.e4 Nb6 7.Ne2
O-O 8.O-O Bd7 9.a4 a5 10.Nbc3 Na6 11.b3 Qc8 12.Ba3 Nb4 13.Bxb4
axb4 14.Na2 Bh3 15. Nxb4 Bxg2 16.Kxg2 Qe6 17.e5 Rad8 18.Qc2
Nd5 19.Nxd5 Qxd5+ 20.f3 Qa5 21. Rad1 Qb6 22.f4 e6 23.Qc4 c6
24.Nc3 Rd7 25.Rf3 Rfd8 26.Rfd3 Bf8 27.Ne4 Be7 28.g4 Qa5 29.Ng3
c5 30.dxc5 Rxd3 31.Rxd3 Rxd3 32.Qxd3 Qxc5 33.Ne4 Qc1 34. Qc4
Qb2+ 35.Kh3 Kg7 36.g5 h6 37.gxh6+ Kxh6 38.Qd3 Qc1 39.Qf3 Kg7
40.Ng3 b6 41.Kg4 Qg1 42.Qe2 Bc5 43.Kf3 Qb1 44.Qc4 Qd1+ 1/2-1/2

[Event "Hastings Christmas 1951-52"]
[Site "ENG"]
[Date "1951.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1-0"]
[White "David V Hooper"]
[Black "Jan Hein Donner"]
[ECO "E45"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "53"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Nge2 Ba6 6.a3 Be7 7.Nf4
d5 8.cxd5 Bxf1 9.dxe6 Ba6 10.exf7+ Kxf7 11.Qb3+ Ke8 12.Ne6 Qd6
13.e4 Bc8 14.Nb5 Qc6 15.Nbxc7+ Kd7 16.d5 Qb7 17.Nxa8 Bd6
18.Nac7 Bxc7 19.O-O Ke7 20.Nxc7 Qxc7 21.Bg5 Qe5 22.f4 Qd4+
23.Kh1 Kf7 24.Rad1 Qxe4 25.Rfe1 Bg4 26.Rxe4 Bxd1 27.Qb4 1-0

[Event "Hastings Christmas 1951-52"]
[Site "ENG"]
[Date "1951.??.??"]
[EventDate "?"]
[Round "3"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Svetozar Gligoric"]
[ECO "D38"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "85"]

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.Nf3 Bb4 5.a3 Bxc3+ 6.bxc3 c5 7.e3
O-O 8. cxd5 exd5 9.Bd3 Bg4 10.O-O Ne4 11.Bc2 c4 12.Qe1 Nd7
13.a4 Re8 14.Nd2 Bf5 15.f3 Nxd2 16.Qxd2 Bxc2 17.Qxc2 Nf6 18.a5
Qd7 19.Bd2 Qc6 20.Rfb1 Re7 21. Qa4 Qe6 22.Rb5 Ne8 23.Re1 Nd6
24.Rc5 f5 25.Bc1 Rae8 26.Ba3 a6 27.Qc2 Qf7 28.Qf2 f4 29.Bc1 h6
30.Bd2 fxe3 31.Rxe3 Rxe3 32.Bxe3 Qf5 33.h3 Nb5 34. Qd2 Kh7
35.Bf4 Qd3 36.Kf2 Qxc3 37.Rxd5 Qd3 38.Rd7 Nc3 39.Qxd3+ cxd3
40. Rxb7 d2 41.Bxd2 Re2+ 42.Kf1 Rxd2 43.Rb6 0-1

[Event "Hastings Christmas 1951-52"]
[Site "ENG"]
[Date "1951.??.??"]
[EventDate "?"]
[Round "4"]
[Result "1/2-1/2"]
[White "Lothar M Schmid"]
[Black "Jan Hein Donner"]
[ECO "D85"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "42"]

1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.d4 g6 5.e4 Nxc3 6.bxc3 Bg7
7.Ba3 O-O 8. Bc4 Nd7 9.Ne2 c5 10.O-O cxd4 11.cxd4 Nb6 12.Bb3
Bg4 13.f3 Bd7 14.Rb1 Rc8 15.Bc5 Re8 16.Qd2 e6 17.Qb4 Bf8 18.a4
Rc7 19.Rfc1 Bxc5 20.Rxc5 Qe7 21. Rbc1 Rec8 1/2-1/2

[Event "Hastings Christmas 1951-52"]
[Site "ENG"]
[Date "1951.??.??"]
[EventDate "?"]
[Round "5"]
[Result "1-0"]
[White "A Thomas"]
[Black "Jan Hein Donner"]
[ECO "B23"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "49"]

1.e4 c5 2.Nc3 a6 3.f4 e6 4.Nf3 d5 5.e5 Nc6 6.Be2 Nge7 7.O-O
Nf5 8.a4 h5 9.Ng5 g6 10.Bf3 Be7 11.Nh3 Ncd4 12.Ne2 Nxf3+
13.Rxf3 Bd7 14.d3 Kf8 15. Nf2 Bc6 16.Rh3 Kg7 17.d4 b5 18.axb5
Bxb5 19.c3 Qb6 20.Ng3 Nxg3 21.Rxg3 cxd4 22.cxd4 Rac8 23.Bd2
Qxd4 24.f5 exf5 25.Bh6+ 1-0

[Event "Hastings Christmas 1951-52"]
[Site "ENG"]
[Date "1951.??.??"]
[EventDate "?"]
[Round "6"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Harry Golombek"]
[ECO "E23"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "103"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 c5 5.dxc5 Nc6 6.Nf3 Ne4 7.Bd2
Nxd2 8. Nxd2 Bxc5 9.Nde4 Qb6 10.Nxc5 Qxc5 11.e3 O-O 12.O-O-O
f5 13.Kb1 b6 14.Nb5 Na5 15.Qc3 Nb7 16.Qd4 a6 17.Nc3 Rb8 18.Be2
Qxd4 19.Rxd4 e5 20.Rd2 Nc5 21. Bf3 e4 22.Be2 a5 23.Rd6 f4
24.exf4 Rxf4 25.Rf1 Bb7 26.Rxb6 Rbf8 27.Rb5 d6 28.Nd1 a4 29.b4
axb3 30.axb3 Ra8 31.g3 Rf6 32.Kc2 Bc6 33.Rb6 Bd7 34.Kc3 Ra1
35.f4 Ra2 36.Nb2 Rh6 37.h4 Rg6 38.Rg1 Kf8 39.h5 Rf6 40.Re1 Ke7
41. Nd1 Rf8 42.Ne3 Be6 43.Nc2 Rfa8 44.g4 d5 45.cxd5 Bxd5
46.Nb4 Bxb3 47.Nxa2 Bxa2 48.Rb4 Kd6 49.Rd1+ Kc7 50.Kd4 Na4
51.Rc1+ Kd6 52.Ra1 1-0

[Event "Hastings Christmas 1951-52"]
[Site "ENG"]
[Date "1951.??.??"]
[EventDate "?"]
[Round "7"]
[Result "0-1"]
[White "Stephan A Popel"]
[Black "Jan Hein Donner"]
[ECO "A08"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "149"]

1.Nf3 d5 2.g3 c5 3.Bg2 Nc6 4.d3 Nf6 5.Nbd2 e5 6.e4 Be7 7.O-O
O-O 8.Re1 d4 9.Nc4 Qc7 10.a4 Nd7 11.a5 Rb8 12.Ng5 b5 13.axb6
axb6 14.Nh3 b5 15.Nd2 Nb6 16.f4 Bxh3 17.Bxh3 exf4 18.gxf4 Qxf4
19.Nf3 Qc7 20.Kh1 Ra8 21.Rb1 Nd7 22.Rg1 Nde5 23.Bf5 Bf6 24.h4
g6 25.Bf4 Qe7 26.h5 Kh8 27.Bh3 Rg8 28.Nh2 c4 29.Qe2 Ra2 30.Ng4
Nxg4 31.Rxg4 Ne5 32.Bxe5 Bxe5 33.dxc4 bxc4 34.Qxc4 Rga8 35.Rf1
Kg7 36.h6+ Kg8 37.Rg2 R2a7 38.Qb3 Rb7 39.Qd5 Rf8 40.Rgf2 Rb6
41.b4 Rd6 42.Qb3 g5 43.Bg4 Rxh6+ 44.Kg1 Bf4 45.Re2 Be3+
46.Rxe3 dxe3 47. Qxe3 Qxb4 48.Kg2 Qe7 49.Rf5 Qc7 50.Rxg5+ Kh8
51.Bf5 Rh2+ 52.Kf3 f6 53.Qa3 Qd8 54.Rg1 Rxc2 55.Bxh7 Rd2
56.Qc5 Rd3+ 57.Kg4 f5+ 58.Bxf5 Rg8+ 59.Kh5 Qe8+ 60.Kh4 Rxg1
61.Qxg1 Qe5 62.Qg2 Qf4+ 63.Kh5 Rg3 64.Qb2+ Rg7 65.Bg6 Qf3+
66.Kh4 Qh1+ 67.Kg4 Qg1+ 68.Kf4 Qxg6 69.Qb8+ Kh7 70.e5 Rf7+
71.Ke3 Qg4 72.Qb1+ Kg7 73.Qh1 Qg3+ 74.Ke4 Rf4+ 75.Kd5 0-1

[Event "Hastings Christmas 1951-52"]
[Site "ENG"]
[Date "1951.??.??"]
[EventDate "?"]
[Round "8"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Gerald Abrahams"]
[ECO "D38"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "85"]

1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Nc3 Bb4 5.a3 Bxc3+ 6.bxc3 Ne4
7.Nd2 f5 8. Qc2 O-O 9.e3 Nd7 10.Be2 Qg5 11.O-O c6 12.cxd5 exd5
13.f4 Qh6 14.Nxe4 fxe4 15.a4 Rf6 16.Qd1 Nf8 17.Ba3 Ng6 18.Rf2
Nh4 19.Be7 Rg6 20.Bg5 Rxg5 21. fxg5 Qxg5 22.Qc1 Bh3 23.Bf1 Re8
24.Kh1 Bc8 25.c4 a6 26.cxd5 cxd5 27.Rb1 Nf5 28.Rc2 Bd7 29.Rxb7
Bxa4 30.Rc3 Rf8 31.Rc8 Be8 32.Rbb8 Qh5 33.Bxa6 Nd6 34.Rd8 Qg6
35.h3 h6 36.Qc6 Rf6 37.Rxe8+ Nxe8 38.Qxe8+ Qxe8 39.Rxe8+ Kf7
40.Ra8 Rb6 41.Kg1 h5 42.Be2 g6 43.h4 1-0

[Event "Hastings Christmas 1951-52"]
[Site "ENG"]
[Date "1951.??.??"]
[EventDate "?"]
[Round "9"]
[Result "1/2-1/2"]
[White "Leonard William Barden"]
[Black "Jan Hein Donner"]
[ECO "C25"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "72"]

1.e4 e5 2.Nc3 Nc6 3.Bc4 Bc5 4.Qg4 g6 5.Qg3 Nf6 6.Nge2 O-O 7.d3
Kg7 8. Bg5 Be7 9.h4 h6 10.Bd2 d6 11.O-O-O Nd4 12.f4 Nxe2+
13.Nxe2 Bg4 14.fxe5 dxe5 15.Rde1 Bd6 16.Nc3 c6 17.h5 g5
18.Ref1 Qd7 19.Nd1 Nh7 20.Ne3 Be6 21. Nf5+ Bxf5 22.Rxf5 a5
23.Qg4 Qe7 24.Rhf1 f6 25.R5f3 Rfe8 26.Qf5 Kh8 27.Qg6 Qg7
28.Bf7 Rf8 29.Qxg7+ Kxg7 30.Bg6 Be7 31.Bc3 g4 32.Rg3 Ng5
33.Rxg4 Bb4 34.Bd2 Bxd2+ 35.Kxd2 Rfd8 36.Bf5 c5 1/2-1/2

[Event "Staunton mem"]
[Site "Birmingham"]
[Date "1951.??.??"]
[EventDate "?"]
[Round "9"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Ernst Ludwig Klein"]
[ECO "D72"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "53"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d5 5.cxd5 Nxd5 6.e4 Nb6 7.Ne2
O-O 8.O-O Nc6 9.d5 Nb8 10.Nec3 c6 11.a4 cxd5 12.exd5 Nc4
13.Re1 Re8 14.Na3 Nd6 15.Nab5 Bd7 16.Bf4 Bxb5 17.Nxb5 Nxb5
18.axb5 Qb6 19.Qe2 Nd7 20.d6 Bd4 21.dxe7 Bc5 22.Qf3 a5 23.Rad1
Nf6 24.Bg5 Kg7 25.Re5 Ng8 26.Rd8 Qa7 27.Rxa8 1-0

[Event "Bad Pyrmont zt"]
[Site "Bad Pyrmont"]
[Date "1951.??.??"]
[EventDate "?"]
[Round "8"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Svetozar Gligoric"]
[ECO "E95"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "89"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O
Nbd7 8.Re1 c6 9.Bf1 Re8 10.Qc2 Nf8 11.h3 Nh5 12.Be3 f5 13.exf5
gxf5 14.dxe5 dxe5 15.Rad1 Qc7 16.Bc5 e4 17.Bd6 Qf7 18.Nd4 Ne6
19.Nxe6 Bxe6 20.b3 Rad8 21.Ne2 Kh8 22.Qc1 b6 23.Bh2 c5 24.Rxd8
Rxd8 25.Rd1 Qe8 26.Rd2 Qe7 27.Qd1 Re8 28.Bd6 Qg5 29.Bc7 Bf6
30.g3 Qg7 31.Bd8 Be5 32.Bh4 f4 33.Rd8 Rg8 34.Rxg8+ Qxg8 35.Kh2
f3 36.Ng1 Bd4 37.Qd2 Qg6 38.Bg5 Ng7 39.h4 Nf5 40.Nh3 h6 41.Nf4
Qf7 42.Nxe6 Qxe6 43.Bf4 e3 44.fxe3 Nxe3 45.Bxe3 1/2-1/2

[Event "Staunton mem"]
[Site "Birmingham"]
[Date "1951.??.??"]
[EventDate "?"]
[Round "11"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Svetozar Gligoric"]
[ECO "E04"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "114"]

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Nf3 dxc4 5.Bg2 a6 6.Ne5 c5 7.e3
cxd4 8.exd4 Be7 9.O-O O-O 10.Nxc4 Nc6 11.Be3 Nd5 12.Nc3 Nxe3
13.fxe3 Bd7 14.Qe2 b5 15.Nd2 Rc8 16.Nce4 Qb6 17.Rfc1 Nxd4
18.exd4 Qxd4+ 19.Qf2 Qxb2 20.Nb3 Qxf2+ 21.Kxf2 Ba3 22.Rxc8
Rxc8 23.Rd1 Be8 24.Ke3 Kf8 25.Nf2 a5 26.Nd3 a4 27.Nd4 Bd6
28.Rb1 Rb8 29.Bc6 e5 30.Nf5 Bxc6 31.Nxd6 f6 32.Nb4 Bd7 33.Rc1
Ke7 34.Ne4 f5 35.Nc3 Rc8 36.Ncd5+ Kf7 37.Rxc8 Bxc8 38.Nd3 Bb7
39.Nc3 Kf6 40.Nxb5 g5 41.Nc3 f4+ 42.Ke2 a3 43.g4 Bg2 44.Nf2 h6
45.Nfe4+ Ke6 46.Nd2 Bb7 47.Nde4 Ba6+ 48.Kf2 Bc4 49.Kf3 Ke7
50.Nd2 Bd3 51.Nde4 Bc4 52.Kf2 Be6 53.h3 Bc4 54.Nd2 Bd3 55.Nde4
Bc4 56.Nd2 Bd3 57.Nde4 Bc4 1/2-1/2

[Event "Bad Pyrmont zt"]
[Site "Bad Pyrmont"]
[Date "1951.??.??"]
[EventDate "?"]
[Round "15"]
[Result "0-1"]
[White "Enrico Paoli"]
[Black "Jan Hein Donner"]
[ECO "C02"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "82"]

1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Ne7 5.Nf3 Nbc6 6.Bd3 cxd4 7.cxd4
Nf5 8.Bxf5 exf5 9.O-O h6 10.b3 g5 11.Ba3 f4 12.Bxf8 Kxf8
13.Qd2 Bg4 14.Ne1 Qb6 15.Nc2 Qd8 16.Nc3 a6 17.Na4 Kg7 18.Nc5
Ra7 19.Rfe1 b6 20.Na4 Ne7 21.Rac1 a5 22.Na3 Bd7 23.Nc3 Rb7
24.Nab5 Nf5 25.Qd3 Be6 26.Re2 Rd7 27.Na4 g4 28.Rec2 Qg5 29.Nc7
f3 30.Nxe6+ fxe6 31.Nxb6 Rf7 32.g3 h5 33.Rc7 h4 34.Rxf7+ Kxf7
35.Rc7+ Kg6 36.Rc6 hxg3 37.fxg3 f2+ 38.Kg2 Qh5 39.Rxe6+ Kg7
40.h4 gxh3+ 41.Kh2 Qg5 0-1

[Event "match"]
[Site "The Hague"]
[Date "1951.02.06"]
[EventDate "1951.??.??"]
[Round "1"]
[Result "0-1"]
[White "Lodewijk Prins"]
[Black "Jan Hein Donner"]
[ECO "C07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "80"]

1.e4 e6 2.d4 d5 3.Nd2 c5 4.Ngf3 Nf6 5.exd5 Nxd5 6.Nb3 cxd4
7.Nfxd4 Bb4+ 8.Bd2 Bxd2+ 9.Qxd2 O-O 10.g3 e5 11.Nb5 Nc6 12.Bg2
Ndb4 13.a3 Qxd2+ 14.Kxd2 Rd8+ 15.Kc3 Na6 16.Rad1 Bg4 17.Rxd8+
Rd8 18.Re1 Nab8 19.Nc5 b6 20.Nd3 a6 21.h3 Bd7 22.Nd6 Bxh3
23.Bxh3 Rxd6 24.Nxe5 Nxe5 25.Rxe5 Kf8 26.Re2 g6 27.b4 f5
28.Kc4 Kf7 29.a4 Re6 30.Rxe6 Kxe6 31.a5 bxa5 32.bxa5 Kd6
33.Bg2 Nd7 34.Kd4 Nc5 35.f4 h6 36.Bf1 g5 37.Bd3 Nxd3 38.fxg5
hxg5 39.cxd3 Ke6 40.Ke3 Kd5 0-1

[Event "match"]
[Site "The Hague"]
[Date "1951.02.10"]
[EventDate "1951.??.??"]
[Round "3"]
[Result "0-1"]
[White "Lodewijk Prins"]
[Black "Jan Hein Donner"]
[ECO "B54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "140"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.f3 e5 6.Nb3 Be6 7.Bg5
Nbd7 8.Bb5 a6 9.Bxd7+ Qxd7 10.Nc3 Be7 11.O-O Rc8 12.Rf2 O-O
13.Rd2 Rfd8 14.Qe1 Qc7 15.Qf2 Ng4 16.fxg4 Bxg5 17.Rd3 b5 18.h4
Be7 19.Rc1 d5 20.Nxd5 Bxd5 21.exd5 e4 22.Rc3 Qe5 23.Rxc8 Rxc8
24.Qf5 Qxf5 25.gxf5 Bxh4 26.c3 Kf8 27.Na5 Ke7 28.Rd1 g6
29.fxg6 hxg6 30.Nb7 f5 31.d6+ Kd7 32.b4 Rxc3 33.Nc5+ Kc6 34.d7
e3 35.d8=Q Bxd8 36.Rxd8 Rc1+ 37.Kh2 e2 38.Nd3 e1=Q 39.Nxe1
Rxe1 40.Ra8 Kb7 41.Rg8 Re6 42.Kg3 Kc6 43.Kf3 Kd5 44.Rc8 Kd4
45.g3 Kd3 46.Rd8+ Kc3 47.a3 Rc6 48.Kf4 Rc4+ 49.Ke5 Rg4 50.Rd6
Rxg3 51.Rxa6 Kb2 52.Ra5 Rg4 53.Rxb5 Kxa3 54.Rb6 Ka4 55.Kd5 f4
56.Ke4 g5 57.Rb8 Rg3 58.b5 Ka5 59.b6 Ka6 60.Kd4 g4 61.Rf8 f3
62.Rf6 Rg2 63.Ke3 Kb7 64.Rf7+ Kxb6 65.Rf6+ Kc5 66.Rf5+ Kd6
67.Rf6+ Ke5 68.Rf8 Re2+ 69.Kd3 Ra2 70.Ke3 Ra6 0-1

[Event "match"]
[Site "The Hague"]
[Date "1951.02.13"]
[EventDate "1951.??.??"]
[Round "4"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Lodewijk Prins"]
[ECO "A53"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "106"]

1.d4 Nf6 2.c4 d6 3.Nc3 Bf5 4.g3 e5 5.dxe5 dxe5 6.Qxd8+ Kxd8
7.Bg2 c6 8.Nf3 Nbd7 9.O-O Bc5 10.b3 Kc7 11.Na4 Rhe8 12.Nxc5
Nxc5 13.Ba3 Nfd7 14.Rfd1 f6 15.Ne1 a5 16.Rd2 a4 17.b4 Ne6
18.Nc2 Bxc2 19.Rxc2 Nd4 20.Rd2 Nb6 21.Rc1 Rad8 22.Kf1 Nf5
23.Rdc2 e4 24.e3 Nh6 25.Ke2 f5 26.Bb2 g6 27.h3 Nf7 28.Rd2 a3
29.Bf6 Ra8 30.Bd4 Ne5 31.Bxe5+ Rxe5 32.f4 Ree8 33.c5 Na4
34.Bf1 Red8 35.Rd4 Nb2 36.Kd2 Rxd4+ 37.exd4 Re8 38.Re1 Rd8
39.Kc3 Kd7 40.Kb3 Ra8 41.Bc4 Kc7 42.Be2 h6 43.h4 b5 44.cxb6+
Kxb6 45.Rc1 Rd8 46.Kxa3 Nd3 47.Bxd3 exd3 48.Kb3 Rxd4 49.Kc3 c5
50.a3 Rd7 51.Rd1 Ra7 52.Kb3 Rd7 53.Kc3 Ra7 1/2-1/2

[Event "match"]
[Site "The Hague"]
[Date "1951.02.16"]
[EventDate "1951.??.??"]
[Round "5"]
[Result "1/2-1/2"]
[White "Lodewijk Prins"]
[Black "Jan Hein Donner"]
[ECO "B18"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "82"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.Nh3 Nf6
7.Bc4 e5 8.Qe2 Qxd4 9.c3 Qd7 10.f4 Be7 11.fxe5 Nd5 12.Nf4 O-O
13.O-O Na6 14.Nxg6 hxg6 15.Bd2 Nac7 16.Rae1 Bc5+ 17.Kh1 Rae8
18.Qf3 Ne6 19.Ne4 Be7 20.Qg3 Nc5 21.Bg5 Nxe4 22.Rxe4 Bxg5
23.Qxg5 Re6 24.Rfe1 Rfe8 25.R4e2 b5 26.Bb3 f6 27.Qxg6 Rxe5
28.Rxe5 Rxe5 29.Rxe5 fxe5 30.h3 Kf8 31.Qe4 Qd6 32.Qf5+ Kg8
33.a4 a6 34.c4 bxc4 35.Bxc4 a5 36.Qc8+ Kf7 37.Qb7+ Kf6 38.Qa8
Nb6 39.Qg8 Nxc4 40.Qxc4 Qd1+ 41.Kh2 Qd2 1/2-1/2

[Event "match"]
[Site "The Hague"]
[Date "1951.02.17"]
[EventDate "1951.??.??"]
[Round "6"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Lodewijk Prins"]
[ECO "A53"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "83"]

1.d4 Nf6 2.c4 d6 3.Nc3 Bf5 4.f3 e5 5.e4 exd4 6.Qxd4 Be6 7.b3
Be7 8.Bb2 O-O 9.Nd5 Bxd5 10.cxd5 c6 11.Qd2 cxd5 12.exd5 Nbd7
13.Ne2 Nb6 14.Nc3 Nh5 15.g3 Bf6 16.Bg2 Re8+ 17.Kf2 Qc7 18.Rhd1
Qc5+ 19.Kf1 a5 20.Rac1 a4 21.g4 axb3 22.axb3 Bxc3 23.Bxc3 Qb5+
24.Kg1 Nf6 25.Bxf6 gxf6 26.Bf1 Qa5 27.Qh6 Nxd5 28.Bd3 Qb6+
29.Kh1 Qe3 30.Qxh7+ Kf8 31.Be4 Ne7 32.Rc7 Ra5 33.Qh8+ Ng8
34.Qh7 Qxb3 35.Rb1 Qe6 36.Rbxb7 Ra1+ 37.Kg2 Ra2+ 38.Kh3 Re7
39.Rxe7 Nxe7 40.Rb8+ Nc8 41.Qh8+ Ke7 42.Qxc8 1-0

[Event "Staunton mem"]
[Site "Birmingham"]
[Date "1951.??.??"]
[EventDate "1951.??.??"]
[Round "5"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "R Broadbent"]
[ECO "E16"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "94"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Bb4+ 6.Nbd2 O-O 7.O-O
d5 8.Ne5 Nbd7 9.Ndf3 Be7 10.Qa4 Nxe5 11.Nxe5 Qe8 12.Qxe8 Rfxe8
13.Be3 c5 14.dxc5 bxc5 15.Rac1 Rac8 16.Rfe1 Ba6 17.cxd5 exd5
18.b3 Bd6 19.Nd3 c4 20.Nf4 c3 21.Rc2 Bxf4 22.gxf4 Rc7 23.Rec1
Ne4 24.Bxe4 dxe4 25.Rxc3 Rxc3 26.Rxc3 Bxe2 27.Bxa7 Rd8 28.Kg2
f5 29.Rc5 Bf3+ 30.Kg3 g6 31.Rc1 Ra8 32.Bd4 Rxa2 33.Kh4 Rd2
34.Rc8+ Kf7 35.Rc7+ Ke6 36.Be3 Rb2 37.Rb7 Rb1 38.Kg5 Rg1+
39.Kh6 Rh1 40.Kxh7 Rxh2+ 41.Kg7 Bh5 42.b4 g5 43.fxg5 f4
44.Bxf4 Rxf2 45.Be3 Rf3 46.Rb6+ Kd5 47.Bc5 e3 1/2-1/2

[Event "Bad Pyrmont zt"]
[Site "Bad Pyrmont"]
[Date "1951.??.??"]
[EventDate "?"]
[Round "9"]
[Result "1-0"]
[White "Harry Golombek"]
[Black "Jan Hein Donner"]
[ECO "A93"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "67"]

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d5 7.b3 b6
8.Ne5 c6 9.Ba3 a5 10.Bxe7 Qxe7 11.Nd2 Ra7 12.Rc1 Rc7 13.e3 Ba6
14.Re1 Rfc8 15.c5 b5 16.a3 b4 17.axb4 axb4 18.Ra1 Ra7 19.Qc2
Qc7 20.Qb2 Nbd7 21.Ndf3 Rca8 22.Nxd7 Nxd7 23.Qd2 Bb5 24.Rxa7
Qxa7 25.Qxb4 Qa2 26.Bf1 Bxf1 27.Rxf1 Qa6 28.Kg2 h6 29.h4 Nf6
30.Ne5 Ng4 31.Nxg4 fxg4 32.Qd2 Qb5 33.Qc2 Kf7 34.h5 1-0

[Event "Bad Pyrmont zt"]
[Site "Bad Pyrmont"]
[Date "1951.??.??"]
[EventDate "?"]
[Round "10"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Lodewijk Prins"]
[ECO "D50"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "51"]

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.Bg5 c5 5.cxd5 cxd4 6.Qxd4 Be7 7.e3
exd5 8.Bb5+ Nc6 9.Qa4 O-O 10.Rd1 Be6 11.Nge2 Qb6 12.Bxf6 Bxf6
13.Nxd5 Bxd5 14.Rxd5 Ne5 15.Nd4 a6 16.Be2 Qxb2 17.O-O Nc6
18.Bf3 b5 19.Qb3 Nxd4 20.exd4 Qxb3 21.axb3 Rad8 22.Rxd8 Rxd8
23.Ra1 Rd6 24.Bb7 Rxd4 25.Bxa6 Rd5 26.Bb7 1/2-1/2

[Event "Paignton"]
[Site "Paignton"]
[Date "1951.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Max Euwe"]
[ECO "E26"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "44"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. e3 b6
7. Bd3 Bb7 8. Nf3 Ne4 9. O-O f5 10. Bb2 O-O 11. a4 Nc6 12. Ne1
Na5 13. Nc2 Qg5 14. g3 Rf6 15. Qe2 Rh6 16. f4 Qg6 17. Bxe4
Bxe4 18. Rad1 Rh3 19. Rf2 Qxg3+ 20. Kf1 Rh4 21. dxc5 Qh3+
22. Ke1 Rg4 0-1

[Event "Staunton mem"]
[Site "Birmingham, England"]
[Date "1951.??.??"]
[EventDate "?"]
[Round "14"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Wolfgang Unzicker"]
[ECO "E10"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "79"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nbd2 Be7 5.g3 dxc4 6.Nxc4 c5 7.Bf4
Nd5 8.dxc5 Bxc5 9.Bd2 Nc6 10.Bg2 O-O 11.a3 b5 12.Nce5 Nxe5
13.Nxe5 Bd4 14.Nd3 Bb7 15.O-O Qd7 16.e3 Bb6 17.Qe2 Rfd8
18.Rfd1 Rac8 19.Nb4 a6 20.Nxd5 Bxd5 21.Bc3 f6 22.Bxd5 exd5
23.Rd3 Qe6 24.Rad1 Rd7 25.Qd2 Rcd8 26.Ba5 Bxa5 27.Qxa5 Kf7
28.Rd4 Ke7 29.Qb4+ Kf7 30.Qd2 Ke7 31.Qd3 h6 32.Kg2 f5 33.Rc1
g6 34.Rc5 Rd6 35.Qc3 Qe5 36.Rc7+ R6d7 37.Qc5+ Kf7 38.Rc6 Rd6
39.Qa7+ R8d7 40.Qxa6 1-0

[Event "Bad Pyrmont zt"]
[Site "Bad Pyrmont FRG"]
[Date "1951.??.??"]
[EventDate "?"]
[Round "5"]
[Result "1/2-1/2"]
[White "Wolfgang Unzicker"]
[Black "Jan Hein Donner"]
[ECO "B15"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "28"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.Bc4 Bd6
7.Ne2 O-O 8.O-O Qc7 9.Ng3 Nd7 10.Qf3 c5 11.Bd3 Re8 12.dxc5
Nxc5 13.Bb5 Bd7 14.Bxd7 Nxd7 1/2-1/2

[Event "Staunton mem"]
[Site "Birmingham, England"]
[Date "1951.??.??"]
[EventDate "?"]
[Round "7"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "C H Alexander"]
[ECO "D22"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "55"]

1.d4 d5 2.c4 dxc4 3.Nf3 a6 4.e3 Bg4 5.Bxc4 e6 6.Qb3 Bxf3
7.gxf3 b5 8.Be2 c5 9.a4 b4 10.dxc5 Bxc5 11.Nd2 Nf6 12.Qc4 Nbd7
13.Nb3 Be7 14.Nd4 Ne5 15.Qc2 Rc8 16.Qd1 Qb6 17.a5 Qb7 18.Rg1
O-O 19.f4 Ng6 20.Qd3 Ra8 21.Bf3 Nd5 22.Be4 Bf6 23.Nf3 Rfd8
24.Qb3 Qb5 25.Bd3 Qc6 26.Be4 Qb5 27.Bd3 Qb7 28.Be4 1/2-1/2

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1952.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Max Euwe"]
[ECO "C99"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "96"]

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 cxd4 12. cxd4
Qc7 13. Nbd2 Bb7 14. d5 Bc8 15. Nf1 Bd7 16. Ng3 Rfc8 17. Bd3
Qb7 18. Qe2 Bd8 19. Be3 Nc4 20. Bxc4 Rxc4 21. b3 Rcc8 22. Rec1
Rxc1+ 23. Rxc1 Rc8 24. Qe1 Ne8 25. Rxc8 Qxc8 26. Qc1 g6
27. Qxc8 Bxc8 28. Ne1 f5 29. exf5 gxf5 30. f4 Nf6 31. fxe5
Nxd5 32. Bd4 Bh4 33. Bf2 dxe5 34. Nf3 Bf6 35. Ba7 Nb4 36. a4
Nc6 37. Bc5 Kf7 38. axb5 axb5 39. Nd2 Ke6 40. Ne2 Bd7 41. g4
fxg4 42. hxg4 Nd4 43. Nxd4+ exd4 44. Ne4 Bg7 45. b4 Kd5
46. Nf2 Kc4 47. Kf1 d3 48. Ke1 Bc3+ 0-1

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1952.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Daniel Yanofsky"]
[Black "Jan Hein Donner"]
[ECO "C11"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "52"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 dxe4 5. Nxe4 Nbd7 6. Nf3
Be7 7. Nxf6+ Bxf6 8. Bxf6 Qxf6 9. Bd3 O-O 10. Qe2 c5 11. Qe4
g6 12. c3 cxd4 13. cxd4 Qe7 14. O-O Nf6 15. Qh4 Bd7 16. Ne5
Kg7 17. Rfe1 Rfd8 18. Rad1 Be8 19. a3 Rac8 20. Bc4 Rc7 21. Rd3
Rdc8 22. Bb3 Rc1 23. Rdd1 Qc7 24. Qg5 Rxd1 25. Rxd1 Qb6
26. Rd3 Qa5 1/2-1/2

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1952.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Andrija Fuderer"]
[Black "Jan Hein Donner"]
[ECO "B15"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "33"]

1. e4 c6 2. Nc3 d5 3. d4 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. Bc4
Bd6 7. Ne2 O-O 8. O-O Qc7 9. Ng3 Nd7 10. Qh5 c5 11. Bd3 g6
12. Qh6 Re8 13. dxc5 Nxc5 14. Nh5 gxh5 15. Bxh7+ Kh8 16. Bg6+
Kg8 17. Qh7+ 1-0

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1952.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Borislav Kostic"]
[Black "Jan Hein Donner"]
[ECO "C12"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "54"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Bb4 5. e5 h6 6. Bh4 g5
7. Bg3 Ne4 8. Nge2 c5 9. a3 Bxc3+ 10. Nxc3 Nxc3 11. bxc3 Qa5
12. Qd2 Nc6 13. dxc5 Bd7 14. c4 Qxc5 15. cxd5 exd5 16. Bd3
O-O-O 17. O-O Qe7 18. f4 Rde8 19. Rae1 gxf4 20. Qxf4 Be6
21. Qa4 Rhg8 22. Rf4 Kb8 23. Rb1 Rc8 24. Rh4 Ka8 25. Qf4 Rg5
26. Rxh6 Rcg8 27. Qf6 Qxa3 1/2-1/2

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1952.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Ludwig Rellstab"]
[Black "Jan Hein Donner"]
[ECO "A13"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "94"]

1. Nf3 d5 2. c4 e6 3. g3 d4 4. Bg2 c5 5. e3 Nc6 6. exd4 cxd4
7. O-O Nf6 8. d3 Bd6 9. Ng5 O-O 10. f4 Be7 11. a3 a5 12. b3
Nd7 13. Nf3 Nc5 14. Ra2 Bd7 15. Rb2 Qc7 16. Kh1 f5 17. Re1 Bd6
18. Rbe2 Rae8 19. Qc2 Qb6 20. Nbd2 Be7 21. Bb2 Bf6 22. Ba1 Na6
23. Bb2 h6 24. h4 g6 25. Bc1 Nc5 26. Bb2 Na6 27. Bc1 Kg7
28. Ne5 Nxe5 29. fxe5 Be7 30. Nf3 Bc6 31. Kh2 Rd8 32. Nd2 g5
33. Rg1 Nc5 34. Qb1 Na6 35. Qc2 Rh8 36. g4 fxg4 37. Bxc6 bxc6
38. Ne4 Qc7 39. Rxg4 Rdf8 40. Kg2 Kf7 41. hxg5 hxg5 42. Nxg5+
Bxg5 43. Bxg5 Ke8 44. Ree4 Qh7 45. Bh4 Rhg8 46. Bf6 Rxg4+
47. Rxg4 Rg8 1/2-1/2

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1952.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "O'Kelly"]
[ECO "E49"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "70"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. a3 Bxc3+
7. bxc3 dxc4 8. Bxc4 c5 9. Ne2 Qc7 10. Bd3 Rd8 11. O-O Nc6
12. Qc2 e5 13. Bb2 Be6 14. Bf5 Bxf5 15. Qxf5 Ne7 16. Qb1 Nc6
17. Qc2 Na5 18. dxe5 Qxe5 19. c4 Qe4 20. Qa4 b6 21. Bxf6 gxf6
22. Rac1 Rd2 23. Nc3 Qe8 24. Qxe8+ Rxe8 25. Nd5 Kg7 26. Nf4
Red8 27. Rc3 f5 28. h4 Ra2 29. Nd5 Nxc4 30. Rxc4 Rxd5 31. a4
h5 32. Rf4 Kg6 33. Re1 Re5 34. Rd1 Re4 35. Rd6+ f6 0-1

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1952.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Hans Bouwmeester"]
[ECO "A13"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "80"]

1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 d4 5. b4 c5 6. Bb2 a5
7. bxc5 Bxc5 8. O-O Nc6 9. d3 a4 10. Ba3 Nd7 11. Nfd2 O-O
12. Bxc5 Nxc5 13. Na3 e5 14. Rb1 Qe7 15. Nb5 f5 16. Qc2 Be6
17. Rfd1 Rad8 18. Nf3 Bf7 19. e3 dxe3 20. fxe3 f4 21. Qe2 fxg3
22. hxg3 Bh5 23. Nc3 e4 24. Nxe4 Nxe4 25. dxe4 Ne5 26. Rxd8
Qxd8 27. Rf1 Qf6 28. Nxe5 Bxe2 29. Rxf6 gxf6 30. Kf2 fxe5+
31. Kxe2 Rd8 32. Bh3 Kf7 33. Bf5 h6 34. c5 Ke7 35. Bh3 b5
36. cxb6 Rb8 37. Kf3 Rxb6 38. Bf1 Rb4 39. Bd3 Kd6 40. Bf1 a3
0-1

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1952.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "T Van Scheltinga"]
[ECO "E72"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "87"]

1. d4 Nf6 2. c4 g6 3. Nc3 d6 4. e4 Bg7 5. g3 O-O 6. Bg2 c5
7. Nge2 Nc6 8. d5 Ne5 9. b3 Bg4 10. O-O Nf3+ 11. Kh1 Nd4
12. f3 Nxe2 13. Qxe2 Bd7 14. Bb2 a6 15. f4 Ne8 16. e5 Rb8
17. Ne4 b5 18. Bc3 bxc4 19. bxc4 Qc7 20. Nd2 e6 21. Rfb1 exd5
22. Rxb8 Qxb8 23. Rb1 Qc8 24. cxd5 Bb5 25. Qe3 Nc7 26. exd6
Bxc3 27. Qxc3 Ne8 28. Ne4 c4 29. Qe5 Qd7 30. a4 Bxa4 31. Nc5
Qxd6 32. Nxa4 Qa3 33. Ra1 Qb4 34. Nc3 Nd6 35. Ne4 Nxe4
36. Qxe4 a5 37. d6 c3 38. d7 Qb2 39. Rg1 c2 40. Qc6 a4 41. Qc8
a3 42. Qxf8+ Kxf8 43. d8=Q+ Kg7 44. Qc7 1-0

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1952.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Haije J Kramer"]
[ECO "C29"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "29"]

1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. d3 Bb4 5. fxe5 Nxe4 6. dxe4
Bxc3+ 7. bxc3 Qh4+ 8. Ke2 Bg4+ 9. Nf3 dxe4 10. Qd4 Bh5 11. Ke3
Bxf3 12. gxf3 Qe1+ 13. Kf4 Qh4+ 14. Ke3 Qe1+ 15. Kf4 1/2-1/2

[Event "Helsinki ol (Men)"]
[Site "Helsinki"]
[Date "1952.08.21"]
[EventDate "1952.08.21"]
[Round "1"]
[Result "0-1"]
[White "Hans Platz"]
[Black "Jan Hein Donner"]
[ECO "C11"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "204"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.e5 Nfd7 5.f4 c5 6.dxc5 Nxc5 7.a3
Nc6 8.Nf3 f5 9.exf6 Qxf6 10.Be3 a6 11.Qd2 Bd6 12.O-O-O O-O
13.g3 Rd8 14.Qf2 b6 15.Bg2 Bb7 16.Rhe1 Rac8 17.Ng5 Kh8 18.Bxd5
exd5 19.Nxd5 Qf8 20.Nxb6 Be7 21.Nxc8 Rxc8 22.Kb1 h6 23.Rd5 Na4
24.Ne6 Qf6 25.Bd4 Nxd4 26.Rxd4 Bc6 27.Qd2 Rb8 28.b3 Bxa3
29.Qa5 Bb4 30.Qc7 Rb6 31.Re5 Qe7 32.Rd8+ Kh7 33.Nf8+ Qxf8
34. Rxf8 Bxf8 35.Re6 Nc3+ 36.Ka1 Nd5 37.Qe5 Rb5 38.Qe4+ Kg8
39.Qc4 Rc5 40.Rxc6 Rxc4 41.Rxc4 a5 42.Kb2 Kf7 43.Rd4 Ke6
44.Kc1 Bb4 45.c4 Nb6 46.Kc2 h5 47. Kd3 Nd7 48.f5+ Ke7 49.Re4+
Kf6 50.Rh4 Nc5+ 51.Kd4 Nxb3+ 52.Kd5 Kg5 53.Rf4 Nc5 54.Kc6 Kf6
55.Kb5 Ke5 56.Rh4 Ne4 57.Rxh5 Nc3+ 58.Kb6 a4 59.f6+ Kxf6 60.c5
a3 61.c6 a2 62.c7 a1=Q 63.c8=Q Qb1 64.Qc6+ Bd6+ 65.Ka6 Qd3+
66.Kb7 Qb1+ 67.Ka6 Ne4 68.Rd5 Ke6 69.Ra5 Qd3+ 70.Kb7 Nf6
71.Kc8 Kf7 72.Ra7+ Kg6 73.g4 Bf4 74.Ra6 Kh7 75.Qe6 Bxh2
76.Qf5+ Qxf5+ 77.gxf5 Kh6 78.Ra2 Bd6 79. Rg2 Kh7 80.Kb7 Kg8
81.Kc6 Bf8 82.Rg1 Kf7 83.Ra1 Be7 84.Ra7 Ne8 85.Kd5 Kf6 86.Rd7
Nd6 87.Ra7 Nxf5 88.Ke4 Bd6 89.Kf3 Kg5 90.Ra5 g6 91.Rd5 Kf6
92.Ra5 Be5 93.Kg4 Nh6+ 94.Kh4 g5+ 95.Kh5 Nf7 96.Ra6+ Kf5
97.Ra7 Nd6 98.Rf7+ Bf6 99.Ra7 Ne4 100.Ra5+ Be5 101.Rb5 Nf6+
102.Kh6 g4 0-1

[Event "Helsinki ol (Men)"]
[Site "Helsinki"]
[Date "1952.08.15"]
[EventDate "1952.08.21"]
[Round "5"]
[Result "1/2-1/2"]
[White "Yosef Porat"]
[Black "Jan Hein Donner"]
[ECO "E68"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "105"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nbd7 7.O-O
e5 8.e4 Re8 9.h3 exd4 10.Nxd4 Nc5 11.Re1 a5 12.Qc2 a4 13.Be3
c6 14.Rad1 Qa5 15.Bf4 Bf8 16.Nf3 Rd8 17.Rd2 Ne6 18.Be3 Nd7
19.Red1 Ne5 20.Nxe5 dxe5 21.Rxd8 Nxd8 22. Qxa4 Ne6 23.Qxa5
Rxa5 24.a3 Kg7 25.Kf1 Be7 26.Ke2 Nd4+ 27.Bxd4 exd4 28. Rxd4
Bf6 29.Rd2 Bxc3 30.bxc3 Rxa3 31.Kd3 Ra1 32.f4 h5 33.h4 Rg1
34.Kd4 Kf6 35.Kc5 Ke7 36.Kd4 Be6 37.Rb2 b6 38.e5 Kd7 39.Rd2
Ra1 40.c5 Kc7 41.cxb6+ Kxb6 42.Be4 Rc1 43.Rb2+ Kc7 44.Rf2 c5+
45.Kd3 c4+ 46.Kd4 Rg1 47.Rg2 Rf1 48.Kc5 Rc1 49.Rc2 Re1 50.Kd4
Kd7 51.Ra2 Rg1 52.Rg2 Re1 53.Ra2 1/2-1/2

[Event "Helsinki ol (Men)"]
[Site "Helsinki"]
[Date "1952.08.28"]
[EventDate "1952.08.21"]
[Round "8"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Menachem Oren (Chwojnik)"]
[ECO "C10"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "107"]

1.e4 e6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Nd7 5.Nf3 Ngf6 6.Nxf6+ Nxf6
7.Be3 Be7 8. Bd3 b6 9.Qe2 O-O 10.O-O-O Bb7 11.c4 Qc8 12.Bg5
Re8 13.Ne5 g6 14.f4 c5 15. dxc5 Qxc5 16.Kb1 Rad8 17.Rhe1 Rd6
18.h4 Qc7 19.g4 Red8 20.h5 Be4 21.Bxe4 Rxd1+ 22.Rxd1 Rxd1+
23.Qxd1 Nxe4 24.Bxe7 Qxe7 25.hxg6 hxg6 26.Qd4 Qd6 27. Qxd6
Nxd6 28.b4 f6 29.c5 bxc5 30.bxc5 Ne4 31.Nd3 Kf7 32.Kc2 g5
33.fxg5 Nxg5 34.Kc3 Ke7 35.Kc4 Kd7 36.a4 Kc7 37.Nf4 Kc6 38.a5
Kb7 39.Kb5 a6+ 40. Kc4 Kc7 41.Nh5 Nh7 42.Ng7 Nf8 43.Ne8+ Kc6
44.Nxf6 Ng6 45.Kd4 e5+ 46.Kc4 e4 47.Nd5 Ne5+ 48.Kd4 Nxg4
49.Nb4+ Kb7 50.Kxe4 Ka7 51.c6 Nf6+ 52.Ke5 Ng4+ 53. Kd6 Kb8
54.Nd5 1-0

[Event "Helsinki ol (Men)"]
[Site "Helsinki"]
[Date "1952.08.23"]
[EventDate "1952.08.21"]
[Round "3"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Christian Poulsen"]
[ECO "E10"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "112"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.cxd5 exd5 5.Bg5 Be7 6.Nc3 O-O 7.e3
c6 8.Qc2 Nh5 9.Bxe7 Qxe7 10.Bd3 g6 11.O-O Ng7 12.Rab1 Bf5
13.b4 b5 14.Bxf5 Nxf5 15. Ne5 a5 16.bxa5 Rxa5 17.Nd3 Ra3
18.Rb3 Re8 19.Nc5 Ra7 20.a4 bxa4 21.N3xa4 Nd6 22.Nb6 Ra5
23.Rfb1 Qa7 24.h3 Kg7 25.Qd3 Na6 26.Nxa6 Qxa6 27.Qxa6 Rxa6
28.Nd7 Nc4 29.Rb8 Ra8 30.Rxe8 Rxe8 31.Ra1 Re7 32.Nc5 Rc7 33.g4
g5 34.Ra8 Nb6 35.Ra6 Nc4 36.Kf1 Rc8 37.Ra7 Kg6 38.Ke2 h6
39.Nd7 Kg7 40.Kd3 Nb2+ 41. Ke2 Nc4 42.f4 gxf4 43.exf4 Re8+
44.Ne5 Kg8 45.Kd3 Nxe5+ 46.dxe5 Rb8 47.Rc7 Rb3+ 48.Kd4 Rb4+
49.Ke3 Rb3+ 50.Kf2 Rxh3 51.Rxc6 Kg7 52.Rc7 Kg8 53.Rd7 Rd3
54.f5 d4 55.Rd8+ Kh7 56.Rd7 Kg8 1/2-1/2

[Event "Helsinki ol (Men)"]
[Site "Helsinki"]
[Date "1952.08.24"]
[EventDate "1952.08.21"]
[Round "4"]
[Result "0-1"]
[White "Dr. Jonathan Penrose"]
[Black "Jan Hein Donner"]
[ECO "B15"]
[WhiteElo "2405"]
[BlackElo "2500"]
[PlyCount "158"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.Bc4 Bd6
7.Qe2+ Be7 8. Qh5 O-O 9.Ne2 g6 10.Qf3 Bd6 11.O-O f5 12.Re1 Nd7
13.Bh6 Qh4 14.Bxf8 Qxh2+ 15.Kf1 Nxf8 16.Qh3 Qxh3 17.gxh3 Ne6
18.Rad1 Ng5 19.Ng1 Bd7 20.Kg2 Kg7 21. Nf3 Nxf3 22.Kxf3 g5
23.Bd3 h5 24.Re2 f4 25.Rg1 Kf6 26.Kg2 f3+ 27.Kxf3 Bxh3 28.Re3
Bf4 29.Re4 Bf5 30.Rxf4 gxf4 31.Bxf5 Kxf5 32.Rg7 Kf6 33.Rg2 Rd8
34. c3 c5 35.Rh2 cxd4 36.cxd4 Kg5 37.Rg2+ Kh6 38.Kxf4 Rxd4+
39.Ke3 Rg4 40.Rh2 Kg5 41.Rh1 h4 42.b3 Kh5 43.Kf3 Rg6 44.Rd1 h3
45.Rd5+ Kh6 46.Rd1 Rg5 47.Rh1 Rh5 48.Kg3 Kg5 49.Kh2 Kh4 50.Rd1
Rg5 51.Rd4+ Rg4 52.Rd2 Rg2+ 53.Kh1 f5 54. a4 b6 55.Rd7 Rxf2
56.Rxa7 Rb2 57.Rb7 Rxb3 58.a5 Kg3 59.Rxb6 Ra3 60.Rg6+ Kh4
61.a6 Ra1+ 62.Kh2 Ra2+ 63.Kg1 f4 64.Rh6+ Kg4 65.Rg6+ Kh5
66.Rg8 Rxa6 67.Kh2 Kh4 68.Rh8+ Kg4 69.Rg8+ Kf3 70.Rb8 Ra1
71.Rb7 Re1 72.Rb8 Kf2 73. Kxh3 f3 74.Kh2 Kf1 75.Kg3 f2 76.Rb2
Re3+ 77.Kh2 Re7 78.Rb1+ Re1 79.Rb2 Rd1 0-1

[Event "Helsinki ol (Men)"]
[Site "Helsinki"]
[Date "1952.08.25"]
[EventDate "1952.08.21"]
[Round "5"]
[Result "0-1"]
[White "Eldis Cobo Arteaga"]
[Black "Jan Hein Donner"]
[ECO "E95"]
[WhiteElo "2420"]
[BlackElo "2500"]
[PlyCount "80"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O
Nbd7 8.Re1 Re8 9.Bf1 c6 10.Rb1 a5 11.d5 Nc5 12.Qc2 Nh5 13.Be3
Na6 14.a3 c5 15.Na2 f5 16. b4 axb4 17.axb4 cxb4 18.Nxb4 Nc5
19.Nd2 Nf6 20.Bxc5 dxc5 21.Nd3 Qd6 22.f3 Bh6 23.Nf2 Rf8
24.exf5 gxf5 25.Bd3 Ne8 26.Nf1 Bg7 27.Ne3 Qg6 28.g4 e4
29. fxe4 fxg4 30.e5 Qg5 31.Bxh7+ Kh8 32.Ng2 Bxe5 33.Qg6 Qxg6
34.Bxg6 Bd4 35. Rxe8 Bxf2+ 36.Kf1 Rxe8 37.Bxe8 Bd4 38.Bg6 Ra2
39.Nh4 Rxh2 40.Be4 Rxh4 0-1

[Event "Helsinki ol (Men)"]
[Site "Helsinki"]
[Date "1952.08.27"]
[EventDate "1952.08.21"]
[Round "7"]
[Result "1-0"]
[White "Karl Poschauko"]
[Black "Jan Hein Donner"]
[ECO "B15"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "43"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.c3 Bd6
7.Bd3 O-O 8. Qc2 h6 9.Be3 Be6 10.Ne2 Qc7 11.Qd2 f5 12.h3 Re8
13.g4 Bd5 14.O-O-O Bxh1 15.Rxh1 Nd7 16.gxf5 Nf6 17.Rg1 Kf8
18.Kb1 Nd5 19.Rxg7 Kxg7 20.Bxh6+ Kh8 21.f6 Rg8 22.Bg7+ 1-0

[Event "Helsinki ol (Men)"]
[Site "Helsinki"]
[Date "1952.08.30"]
[EventDate "1952.08.21"]
[Round "9"]
[Result "1/2-1/2"]
[White "Kazimierz Plater"]
[Black "Jan Hein Donner"]
[ECO "D79"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "50"]

1.Nf3 d5 2.g3 Nf6 3.Bg2 g6 4.d4 Bg7 5.c4 O-O 6.O-O c6 7.cxd5
cxd5 8.Nc3 Ne4 9.Nxe4 dxe4 10.Ng5 Qxd4 11.Qxd4 Bxd4 12.Nxe4
Nc6 13.e3 Bg7 14.Nc5 Rd8 15.Rb1 Rb8 16.b3 Ne5 17.f4 Ng4 18.h3
Bf5 19.Ne4 Nf6 20.Nxf6+ Bxf6 21.e4 Bd4+ 22.Kh2 Bd7 23.Ba3 e5
24.Bd6 Bb5 25.Bxb8 Bxf1 1/2-1/2

[Event "Helsinki ol (Men)"]
[Site "Helsinki"]
[Date "1952.08.12"]
[EventDate "1952.08.21"]
[Round "3"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "K Tsiknopoulos"]
[ECO "E38"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "33"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 c5 5.dxc5 Na6 6.a3 Bxc5 7.Nf3
O-O 8.Bg5 h6 9.Bh4 Be7 10.e4 d5 11.e5 Nd7 12.Bg3 Qc7 13.cxd5
exd5 14.e6 Qc5 15.exd7 Bxd7 16.Bxa6 bxa6 17.Qd2 1-0

[Event "Helsinki ol (Men)"]
[Site "Helsinki"]
[Date "1952.08.10"]
[EventDate "1952.08.21"]
[Round "1"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Robert Eugene Byrne"]
[ECO "E95"]
[WhiteElo "2500"]
[BlackElo "2560"]
[PlyCount "80"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 Nbd7 7.O-O
e5 8.Re1 c6 9.Bf1 Re8 10.h3 exd4 11.Nxd4 Nc5 12.Qc2 Bd7 13.Nf3
Ncxe4 14.Nxe4 Rxe4 15. Rxe4 Bf5 16.Ng5 Nxe4 17.Nxe4 d5 18.Qb3
Bxe4 19.Qxb7 Qc8 20.Qb3 Rb8 21.Qa4 Qd7 22.cxd5 Bxd5 23.Be3
Rxb2 24.Bxa7 Rxf2 25.Bxf2 Bxa1 26.Qa8+ Kg7 27.Bc5 Be5 28.Qf8+
Kf6 29.a4 Ke6 30.Qh6 Bb3 31.Qh4 Kd5 32.Qb4 Qf5 33.Bf2 Qc2
34. a5 c5 35.Qb7+ Ke6 36.a6 Bd5 37.Qc8+ Kf6 38.Bxc5 Qe4
39.Qd8+ Ke6 40.Qb6+ Kf5 1-0

[Event "Helsinki ol (Men)"]
[Site "Helsinki"]
[Date "1952.08.11"]
[EventDate "1952.08.21"]
[Round "2"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Osmo Ilmari Kaila"]
[ECO "E11"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "81"]

1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Bd2 Qe7 5.g3 O-O 6.Bg2 Bxd2+
7.Qxd2 d6 8.Nc3 c5 9.O-O Nc6 10.b3 Rb8 11.Rfe1 a6 12.d5 Nd8
13.e4 e5 14.Nh4 Ng4 15.Bh3 Nh6 16.Bxc8 Rxc8 17.Nf5 Nxf5
18.exf5 f6 19.a4 Nf7 20.g4 h5 21.f3 Rce8 22.Qg2 Nh6 23.Ne4 Rb8
24.h3 Kf7 25.f4 Ke8 26.fxe5 fxe5 27.Qg3 Kd7 28.Rf1 hxg4
29. hxg4 Kc7 30.Rf2 b6 31.Raf1 b5 32.g5 Ng8 33.axb5 axb5 34.b4
bxc4 35.bxc5 Rb3 36.Rf3 Rxf3 37.Qxf3 Kb8 38.Rb1+ Ka8 39.Qa3+
Qa7 40.Qxa7+ Kxa7 41.Nxd6 1-0

[Event "Helsinki ol (Men)"]
[Site "Helsinki"]
[Date "1952.08.17"]
[EventDate "1952.08.21"]
[Round "6"]
[Result "1/2-1/2"]
[White "Paul Mueller"]
[Black "Jan Hein Donner"]
[ECO "C06"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "105"]

1.e4 e6 2.d4 d5 3.Nd2 Nf6 4.e5 Nfd7 5.Bd3 c5 6.c3 Nc6 7.Ne2
cxd4 8.cxd4 f6 9.exf6 Qxf6 10.Nf3 Bd6 11.O-O O-O 12.Ng3 e5
13.Nh5 Qe7 14.dxe5 Ndxe5 15. Nxe5 Qxe5 16.f4 Qd4+ 17.Kh1 g6
18.Ng3 Be6 19.a3 Rae8 20.Be2 Qxd1 21.Bxd1 g5 22.Bh5 Bf7
23.Bxf7+ Rxf7 24.f5 Nd4 25.Bxg5 Bxg3 26.hxg3 Rxf5 27.Rxf5 Nxf5
28.Bf4 h5 29.Rd1 d4 30.Kg1 Re2 31.b4 Kf7 32.Bb8 a6 33.Ba7 Re4
34.Kf2 Ke6 35.Rh1 Ng7 36.Rc1 Nf5 37.Rh1 Ng7 38.Rc1 Kd6 39.Kf3
Re3+ 40.Kf2 Rd3 41. a4 Ne6 42.Rh1 Rb3 43.Rxh5 Rxb4 44.a5 Rb5
45.g4 Rb2+ 46.Kf3 Rb3+ 47.Kf2 Rb2+ 48.Kf3 Rb3+ 49.Kf2 Kc6
50.g3 d3 51.Re5 Nc7 52.Ke3 Kd6 53.Rh5 1/2-1/2

[Event "Helsinki ol (Men)"]
[Site "Helsinki"]
[Date "1952.08.19"]
[EventDate "1952.08.21"]
[Round "7"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Andrzej Pytlakowski"]
[ECO "E32"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "81"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qc2 O-O 5.a3 Bxc3+ 6.Qxc3 d6
7.Bg5 Nbd7 8.e3 h6 9.Bh4 b6 10.f3 c5 11.e4 e5 12.d5 a6 13.a4
g6 14.Bf2 Kg7 15.Bd3 Ng8 16. Ne2 f6 17.Be3 Rf7 18.Kf2 a5
19.Qd2 Nf8 20.f4 Raa7 21.Rag1 Nh7 22.Ke1 g5 23.g3 Kf8 24.Nc3
Rg7 25.Be2 Bd7 26.h4 Be8 27.Bg4 Bg6 28.Be6 Ke7 29.hxg5 hxg5
30.fxg5 Nxg5 31.Bxg5 fxg5 32.Qxg5+ Ke8 33.Qxd8+ Kxd8 34.Rh8
Bf7 35. Rf1 Bxe6 36.dxe6 Rae7 37.Nd5 Rxg3 38.Rf8+ Re8 39.e7+
Kd7 40.Rxe8 Kxe8 41. Rxg8+ 1-0

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1953.??.??"]
[EventDate "?"]
[Round "09"]
[Result "1/2-1/2"]
[White "Max Euwe"]
[Black "Jan Hein Donner"]
[ECO "D62"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "44"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 O-O 6. Nf3 Nbd7
7. Qc2 c5 8. cxd5 Nxd5 9. Bxe7 Qxe7 10. Nxd5 exd5 11. Bd3 g6
12. dxc5 Nxc5 13. O-O Bd7 14. Qc3 Rfc8 15. Rac1 Ne6 16. Qe5
Bc6 17. Nd4 Qc7 18. Qf6 Qd8 19. Qxd8+ Nxd8 20. e4 dxe4
21. Nxc6 Rxc6 22. Bxe4 Rb6 1/2-1/2

[Event "Beverwijk"]
[Site "04"]
[Date "1953.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Nicolas Rossolimo"]
[Black "Jan Hein Donner"]
[ECO "C50"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "55"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.O-O Nf6 5.Re1 d6 6.c3 Bb6 7.a4
a6 8.Na3 O-O 9.Ba2 Ba7 10.Nc2 Be6 11.d3 Bxa2 12.Rxa2 d5 13.Qe2
dxe4 14.dxe4 Qe7 15.Ra1 Nd7 16.Be3 Nc5 17.b4 Nd7 18.Bxa7 Rxa7
19.Ne3 Raa8 20.Rad1 Rad8 21.Rd3 Ncb8 22.Nd5 Qd6 23.Red1 Rde8
24.Nh4 g6 25.Qd2 Nf6 26.Nf5 Qe6 27.Qh6 Nh5 28.Nxc7 1-0

[Event "Opatija"]
[Site "Opatija"]
[Date "1953.??.??"]
[EventDate "?"]
[Round "14"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Juraj Nikolac"]
[ECO "D46"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "55"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 Nf6 5. e3 Nbd7 6. Bd3 Bb4
7. a3 Ba5 8. O-O O-O 9. Qc2 Qe7 10. Bd2 e5 11. dxe5 Nxe5
12. Nxe5 Qxe5 13. cxd5 cxd5 14. Ne2 Bxd2 15. Qxd2 Ng4 16. Ng3
Qg5 17. Be2 Rd8 18. Qd4 Nf6 19. Rfc1 Ne8 20. Rc3 Rd6 21. Rac1
Bd7 22. b4 Rh6 23. Bf3 Be6 24. Ne2 Rf6 25. Nf4 b6 26. h4 Qxh4
27. Nxe6 Qh6 28. Qxd5 1-0

[Event "Opatija"]
[Site "Opatija"]
[Date "1953.??.??"]
[EventDate "?"]
[Round "11"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Giorgio Porreca"]
[ECO "E61"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "47"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. g3 d5 5. cxd5 Nxd5 6. Bg2 Nb6
7. Nf3 O-O 8. O-O Na6 9. Bf4 c5 10. dxc5 Nxc5 11. Qc2 Qe8
12. Rad1 Nca4 13. Nxa4 Nxa4 14. Be5 Bf5 15. Qb3 Bxe5 16. Nxe5
Rb8 17. Rc1 Be6 18. Qa3 Qb5 19. Nd3 Rbc8 20. Qxe7 Bxa2
21. Qxb7 Qxb7 22. Bxb7 Rb8 23. Rc7 Rfe8 24. Bc6 1-0

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1953.??.??"]
[EventDate "?"]
[Round "2"]
[Result "0-1"]
[White "T Van Scheltinga"]
[Black "Jan Hein Donner"]
[ECO "E65"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "80"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 d6 6. d4 c5
7. Nc3 Nc6 8. h3 Bd7 9. d5 Na5 10. Qd3 a6 11. a4 e6 12. Bg5 h6
13. Bxf6 Bxf6 14. dxe6 Bxe6 15. Nd2 Bg7 16. b3 Qd7 17. Kh2 Nc6
18. Rac1 Nb4 19. Qb1 Qe7 20. Rfd1 Rad8 21. Nf1 Rfe8 22. Kg1
Bc8 23. Rd2 Bf5 24. Qb2 h5 25. Ne3 Be6 26. Re1 Bd4 27. Ned1 b5
28. cxb5 axb5 29. Qb1 bxa4 30. bxa4 d5 31. Nb5 Bg7 32. e3 Bf5
33. e4 dxe4 34. Rxd8 Rxd8 35. Ne3 Nd3 36. Re2 Bc8 37. Nc4 f5
38. Ncd6 Rxd6 39. Nxd6 Qxd6 40. Qb5 Bd7 0-1

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1953.??.??"]
[EventDate "?"]
[Round "3"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Wolfgang Heidenfeld"]
[ECO "A52"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "77"]

1. d4 Nf6 2. c4 e5 3. dxe5 Ng4 4. Bf4 Nc6 5. Nf3 Bb4+ 6. Nbd2
Qe7 7. a3 Ngxe5 8. Nxe5 Nxe5 9. e3 Bxd2+ 10. Qxd2 O-O 11. Be2
d6 12. O-O Re8 13. Bg3 Bf5 14. f3 a5 15. b4 axb4 16. axb4 Nc6
17. e4 Rxa1 18. Rxa1 Qf6 19. Rd1 Bc8 20. b5 Ne5 21. b6 cxb6
22. Qxd6 Qxd6 23. Rxd6 Nc6 24. Bf2 f5 25. Bxb6 fxe4 26. f4 Kf7
27. Kf2 Be6 28. Ke3 Ra8 29. Rd2 Ra4 30. Rc2 Ra6 31. Rb2 Ra4
32. Bd4 Na5 33. Bc3 Bxc4 34. Bxa5 Bxe2 35. Rxb7+ Kg6 36. Bc3
Bd3 37. Rxg7+ Kh6 38. Rg5 Ra7 39. g4 1-0

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1953.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Nicolaas Cortlever"]
[ECO "C81"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5
7. Bb3 d5 8. dxe5 Be6 9. Qe2 Be7 10. Rd1 Nc5 11. Be3 Nxb3
12. axb3 O-O 13. c4 Nb4 14. Nc3 c5 15. cxd5 Nxd5 16. Qe1 Ra7
17. b4 Rd7 18. bxc5 Qa8 19. Ne4 Nc7 20. Nd6 Bg4 21. Rd3 Bxf3
22. gxf3 Qxf3 23. Qd1 Qc6 24. Nf5 Qg6+ 25. Kf1 Qxf5 26. Rxd7
Qxe5 27. Qd4 Qxh2 28. Rxe7 Qh1+ 29. Ke2 Qxa1 30. Rxc7 Qb1
31. Rd7 Qc2+ 32. Qd2 Qc4+ 33. Qd3 Qg4+ 34. Kd2 h5 35. c6 Qb4+
36. Qc3 Qg4 37. Qd4 Qe6 38. c7 Rc8 39. Rd8+ Kh7 40. Rxc8 Qxc8
41. Qd8 1-0

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1953.??.??"]
[EventDate "?"]
[Round "7"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "A H Trott"]
[ECO "B58"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "51"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 e5
7. Nxc6 bxc6 8. O-O Nd7 9. f4 Be7 10. f5 O-O 11. Qd3 Nb6
12. Qg3 Bh4 13. Qg4 Kh8 14. Rf3 g6 15. Rh3 Bf6 16. Bd2 d5
17. Rf1 Rg8 18. Rff3 g5 19. Rh6 Rg7 20. Rfh3 Nd7 21. exd5 Nf8
22. Ne4 Ng6 23. Qh5 Nf8 24. Nxf6 Bxf5 25. Bd3 Bxh3 26. Bxh7
1-0

[Event "Opatija"]
[Site "Opatija"]
[Date "1953.??.??"]
[EventDate "?"]
[Round "7"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Borislav Ivkov"]
[ECO "E64"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "98"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d6 6. O-O c5
7. d5 Na6 8. Nc3 Nc7 9. a4 Rb8 10. Nd2 b6 11. Re1 a6 12. e4
Bg4 13. Qc2 Bd7 14. Bf1 e5 15. dxe6 Nxe6 16. h3 Nd4 17. Qd1
Ne8 18. Nf3 Nxf3+ 19. Qxf3 Nc7 20. Qd1 Ne6 21. Ne2 Bc6 22. Bg2
Qd7 23. Nc3 Rfe8 24. Qd3 Nd4 25. Be3 b5 26. cxb5 axb5 27. axb5
Bxb5 28. Nxb5 Qxb5 29. Qxb5 Rxb5 30. Bxd4 Bxd4 31. Re2 Bxb2
32. Ra6 Be5 33. Bf1 Rb1 34. Kg2 g5 35. Rea2 Rc1 36. R6a4 Bd4
37. Ra8 Rxa8 38. Rxa8+ Kg7 39. Ra2 Kf6 40. Bd3 Ke5 41. Ra7 c4
42. Re7+ Kf6 43. Rc7 Bc5 44. e5+ Kxe5 45. Bxh7 c3 46. Re7+ Kd4
47. Re2 d5 48. h4 gxh4 49. gxh4 Kc4 0-1

[Event "Opatija"]
[Site "Opatija"]
[Date "1953.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Josef Kupper"]
[ECO "E59"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "69"]

1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. e3 c5 5. Bd3 d5 6. Nf3 O-O
7. O-O Nc6 8. a3 Bxc3 9. bxc3 dxc4 10. Bxc4 Qc7 11. a4 b6
12. Ba3 Bb7 13. Be2 Rfd8 14. Qb1 e5 15. Rd1 e4 16. Nd2 Ne7
17. Nf1 Rac8 18. dxc5 Rxd1 19. Qxd1 bxc5 20. c4 Ng6 21. Rb1
Ba6 22. Qc2 Ne5 23. Ng3 Qc6 24. Rd1 Qe6 25. Rc1 Bb7 26. h3 Qc6
27. Rd1 Nd3 28. f4 Rd8 29. Bb2 Rd6 30. Nf5 Re6 31. Bxf6 gxf6
32. Bxd3 exd3 33. Rxd3 Re8 34. Qf2 Kh8 35. Qg3 1-0

[Event "Opatija"]
[Site "Opatija, Yugoslavia"]
[Date "1953.??.??"]
[EventDate "?"]
[Round "9"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Wolfgang Unzicker"]
[ECO "E67"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "58"]

1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.O-O O-O 5.c4 d6 6.d4 Nbd7 7.Nc3
e5 8.e4 exd4 9.Nxd4 Re8 10.Re1 Nc5 11.f3 Nfd7 12.Be3 Ne5
13.Bf1 a5 14.Rc1 c6 15.h3 Ned7 16.Bf2 Nf6 17.Qc2 Qc7 18.Rcd1
Bd7 19.g4 Rad8 20.Bg3 Bc8 21.Qf2 b6 22.Nb3 Nxb3 23.axb3 Bb7
24.c5 bxc5 25.Qxc5 Nd7 26.Bxd6 Nxc5 27.Bxc7 Rxd1 28.Rxd1 Nxb3
29.Bb6 Bc8 1/2-1/2

[Event "Opatija"]
[Site "Opatija, Yugoslavia"]
[Date "1953.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1/2-1/2"]
[White "Andrija Fuderer"]
[Black "Jan Hein Donner"]
[ECO "C73"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "32"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.Bxc6+ bxc6 6.d4 f6 7.c4
Ne7 8.Nc3 c5 9.dxc5 dxc5 10.Qxd8+ Kxd8 11.Be3 Nc6 12.O-O-O+
Bd7 13.Ne1 Nd4 14.f4 Bd6 15.fxe5 fxe5 16.Nd3 a5 1/2-1/2

[Event "Amsterdam ol final (25.09.54)"]
[Site "11"]
[Date "1954.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Paul Keres"]
[Black "Jan Hein Donner"]
[ECO "C86"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "95"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Qe2 b5 7.Bb3
d6 8.c3 O-O 9.a4 Na5 10.Bc2 Be6 11.axb5 axb5 12.d4 Bc4 13.Bd3
Nd7 14.Nbd2 Bxd3 15.Qxd3 b4 16.cxb4 Nc6 17.Rxa8 Qxa8 18.Nb3
Nxb4 19.Qc4 Na6 20.dxe5 Nxe5 21.Nxe5 dxe5 22.Be3 Qc8 23.Ra1
Nb8 24.h3 Bd6 25.Ra7 Qe6 26.Na5 Qxc4 27.Nxc4 Nc6 28.Rb7 Rb8
29.Rxb8+ Nxb8 30.Kf1 Kf8 31.Nxd6 cxd6 32.Ke2 Ke7 33.Kd3 Kd7
34.Kc4 Nc6 35.b4 Ke6 36.g4 g6 37.Bb6 Kd7 38.Kb5 Ne7 39.Be3 d5
40.exd5 Nxd5 41.Kc5 Nc7 42.g5 Na6+ 43.Kb5 Nc7+ 44.Kb6 Nd5+
45.Kc5 Nc7 46.b5 Ne6+ 47.Kb6 Nd4 48.Ka6 1-0

[Event "Amsterdam olym pre"]
[Site "05"]
[Date "1954.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Karl Robatsch"]
[ECO "B06"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1.d4 g6 2.e4 Bg7 3.g3 d6 4.Bg2 Nc6 5.Ne2 e5 6.c3 Nf6 7.O-O O-O
8.f4 exd4 9.cxd4 Bg4 10.Nbc3 Nd7 11.Be3 Nb6 12.Bf2 Qd7 13.d5
Nb4 14.a3 Na6 15.Qc2 f5 16.Nd4 fxe4 17.Nxe4 Nxd5 18.Qb3 c6
19.Nc3 Nc5 20.Qc4 Kh8 21.Nxd5 cxd5 22.Bxd5 Rac8 23.Qb5 Qd8
24.Rfe1 a6 25.Qf1 Qd7 26.b4 Bh3 27.Qe2 Na4 28.Qd2 Rfe8
29.Rxe8+ Rxe8 30.Re1 Rxe1+ 31.Qxe1 b5 32.Bc6 Qd8 33.Nf3 h6
34.Nh4 Qf6 35.Be4 Bf5 36.Nxf5 gxf5 37.Bb7 Nc3 38.Qe8+ Kh7
39.Bc8 Ne4 40.Be6 h5 41.Qxh5+ 1-0

[Event "04, Amsterdam"]
[Site "04, Amsterdam"]
[Date "1954.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Vasily Smyslov"]
[ECO "E34"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "49"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d5 5. cxd5 exd5 6. Bg5 h6
7. Bxf6 Qxf6 8. e3 O-O 9. Nf3 Bf5 10. Bd3 Bxd3 11. Qxd3 Nd7
12. O-O c6 13. a3 Bd6 14. e4 Qg6 15. Rad1 dxe4 16. Nxe4 Rfe8
17. Rfe1 Nb6 18. Nc5 Qxd3 19. Nxd3 Rad8 20. Kf1 Rxe1+ 21. Rxe1
Kf8 22. h3 f6 23. Nd2 Kf7 24. Nb3 Bf8 25. Rc1 1/2-1/2

[Event "Hastings"]
[Site "Hastings"]
[Date "1954.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Laszlo Szabo"]
[ECO "E00"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "112"]

1.d4 Nf6 2.c4 e6 3.g3 c5 4.dxc5 Bxc5 5.Bg2 Nc6 6.Nf3 Qa5+
7.Nbd2 O-O 8.O-O Qc7 9.Nb3 Be7 10.Bf4 d6 11.Rc1 e5 12.Bg5 Rd8
13.Nfd2 Be6 14.e3 Rac8 15.Qe2 Qb6 16.Bxf6 Bxf6 17.Ne4 Be7
18.Nc3 Qa6 19.Nd2 d5 20.cxd5 Qxe2 21.Nxe2 Bxd5 22.Bxd5 Rxd5
23.Nf3 Rb5 24.b3 Ba3 25.Rc4 Rd8 26.Nc3 Rb4 27.Rxb4 Bxb4 28.Rc1
f5 29.Ne2 Kf7 30.Rc4 Kf6 31.g4 fxg4 32.Rxg4 Rd1+ 33.Kg2 Ra1
34.Ng3 g6 35.Rc4 Rxa2 36.Ne4+ Kf5 37.Nh4+ Ke6 38.Ng5+ Kd6
39.Nhf3 a5 40.Nxh7 Rb2 41.Rg4 Rxb3 42.Rxg6+ Kc7 43.Nf6 a4
44.Nd5+ Kb8 45.h4 e4 46.Nd4 Nxd4 47.exd4 Bd2 48.Rg8+ Ka7
49.Nc7 Kb6 50.Ne6 a3 51.Ra8 e3 52.fxe3 Ba5 53.Nc5 Rb2+ 54.Kf3
a2 55.Na4+ Kb5 56.Nxb2 a1=Q 0-1

[Event "Amsterdam ol (Men) fin-A"]
[Site "Amsterdam"]
[Date "1954.??.??"]
[EventDate "?"]
[Round "3"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Miroslav Filip"]
[ECO "A62"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "96"]

1.c4 Nf6 2.d4 e6 3.g3 c5 4.d5 exd5 5.cxd5 d6 6.Nc3 g6 7.Nf3
Bg7 8.Bg2 O-O 9.O-O a6 10.a4 Nbd7 11.Nd2 Rb8 12.a5 b5 13.axb6
Nxb6 14.e4 Re8 15.Re1 Qe7 16.Nf1 Nc4 17.Qe2 Ne5 18.h3 c4
19.Be3 Nd3 20.Reb1 Nd7 21.Nd1 N7c5 22.Nd2 Nb3 23.Ra4 Nxd2
24.Qxd2 Nxb2 25.Nxb2 c3 26.Qc2 cxb2 27.Bd4 Bd7 28.Rc4 Bxd4
29.Rxd4 Qe5 30.Qd2 a5 31.Rxb2 Rxb2 32.Qxb2 a4 33.Rd2 Qxb2
34.Rxb2 Rc8 35.Rb7 Ra8 36.Rb2 f5 37.exf5 a3 38.Ra2 Bxf5 39.Bf1
Be4 40.Bc4 Rc8 41.Bf1 Rc3 42.Bg2 Bb1 43.Ra1 a2 44.f4 Rxg3
45.Kf2 Rb3 46.Bf1 Kg7 47.h4 Kf6 48.Bc4 Rb4 0-1

[Event "NED-FRG"]
[Site "Utrecht"]
[Date "1954.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1-0"]
[White "Lothar M Schmid"]
[Black "Jan Hein Donner"]
[ECO "C85"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "55"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Bxc6 dxc6
7.Qe1 Be6 8.b3 Nd7 9.Bb2 f6 10.d4 Bd6 11.Nbd2 Qe7 12.Qe2 O-O
13.Nc4 Bf7 14.Rad1 c5 15.dxe5 Nxe5 16.Nfxe5 fxe5 17.f4 exf4
18.e5 Qe8 19.Qe4 Be7 20.e6 Bg6 21.Qxb7 Qc8 22.Qc6 Be8 23.Rd7
Bf6 24.e7 Bxd7 25.exf8=Q+ Kxf8 26.Qxc5+ Kg8 27.Bxf6 gxf6
28.Rxf4 1-0

[Event "Amsterdam ol (Men) fin-A"]
[Site "Amsterdam"]
[Date "1954.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1/2-1/2"]
[White "Lothar M Schmid"]
[Black "Jan Hein Donner"]
[ECO "C97"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "72"]

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 Re8 13.a4 Bb7
14.dxe5 dxe5 15.axb5 axb5 16.Qe2 c4 17.Nf1 Bf8 18.Bg5 Nd7
19.Ne3 f6 20.Bh4 Nc5 21.Nd5 Bxd5 22.exd5 Qf7 23.Red1 Nab7
24.Rxa8 Rxa8 25.Nd2 Ra2 26.Ne4 Nxe4 27.Bxe4 Nd6 28.Bb1 Ra5
29.Bg3 b4 30.Qc2 g6 31.cxb4 Rxd5 32.Rxd5 Qxd5 33.f3 Nf5 34.Ba2
Ne3 35.Qe2 Bxb4 36.Bf2 Qd1+ 1/2-1/2

[Event "Amsterdam ol (Men) fin-A"]
[Site "Amsterdam"]
[Date "1954.??.??"]
[EventDate "?"]
[Round "6"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Dr. Jonathan Penrose"]
[ECO "A40"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1.d4 Nc6 2.Nf3 d6 3.e4 Nf6 4.Nc3 e5 5.dxe5 Nxe5 6.Nxe5 dxe5
7.Qxd8+ Kxd8 8.Bg5 c6 9.Bc4 Ke8 10.O-O-O Be7 11.f3 Nd7 12.Be3
Bc5 13.Rhe1 Bxe3+ 14.Rxe3 Nb6 15.Bb3 Ke7 16.Red3 Be6 17.Bxe6
Kxe6 18.a4 a5 19.Nb5 Rab8 20.Nd6 f6 21.b3 g6 22.g3 Rhg8 23.f4
exf4 24.gxf4 Rg7 25.c4 Nd7 26.Nf5 gxf5 27.Rd6+ Kf7 28.Rxd7+
Kf8 29.exf5 b5 30.Rxg7 Kxg7 31.Rd7+ Kg8 32.axb5 cxb5 33.c5 Rc8
34.b4 axb4 35.Rd5 Kf7 36.Kb2 Ke7 37.Kb3 Ke8 38.Kxb4 Rb8 39.c6
Ke7 40.Rd7+ Ke8 41.Rxh7 1-0

[Event "NED-ch17"]
[Site "Amsterdam"]
[Date "1954.??.??"]
[EventDate "?"]
[Round "4"]
[Result "1/2-1/2"]
[White "C B Van den Berg"]
[Black "Jan Hein Donner"]
[ECO "C97"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "115"]

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 Bd7 13.Nf1
Nc4 14.dxe5 dxe5 15.N3h2 Rad8 16.Qf3 Bc6 17.Ng3 Nd6 18.Bg5
Nfe8 19.Bxe7 Qxe7 20.Qe3 Nc4 21.Nf5 Qa7 22.Qg3 f6 23.Bb3 Ned6
24.Nxd6 Rxd6 25.Ng4 Bd7 26.Rad1 Rxd1 27.Rxd1 Be6 28.Ne3 Qf7
29.Bxc4 Bxc4 30.Nf5 Qc7 31.Qg4 Kh8 32.Ne3 Bf7 33.Rd7 Qc6
34.Rd6 Qa8 35.Qd7 Bxa2 36.Nf5 Bf7 37.f3 Qc8 38.Qxc8 Rxc8
39.Rxa6 Rd8 40.Nd6 Bc4 41.Rc6 Kg8 42.Kf2 h5 43.g3 Ra8 44.Rxc5
Ra2 45.Nxc4 bxc4 46.Rb5 Ra1 47.f4 exf4 48.gxf4 g6 49.Rb4 Rh1
50.Rxc4 Rh2+ 51.Kg3 Rxb2 52.Kh4 Rf2 53.Kg3 Re2 54.Kf3 Rh2
55.Kg3 Re2 56.h4 Re3+ 57.Kf2 Rh3 58.Rc8+ 1/2-1/2

[Event "Amsterdam ol (Men)"]
[Site "Amsterdam"]
[Date "1954.09.12"]
[EventDate "1954.09.04"]
[Round "1"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Petar Trifunovic"]
[ECO "E00"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "39"]

1.d4 Nf6 2.c4 e6 3.g3 Bb4+ 4.Nd2 c5 5.Nf3 cxd4 6.a3 Be7 7.Nxd4
Nc6 8.Nxc6 bxc6 9.Bg2 d5 10.O-O O-O 11.b3 a5 12.e4 Ba6 13.Re1
Rb8 14.exd5 cxd5 15. cxd5 Nxd5 16.Bb2 Bf6 17.Bxf6 Nxf6 18.Rb1
Qe7 19.Re5 Qxa3 20.Ra1 1/2-1/2

[Event "Amsterdam ol (Men)"]
[Site "Amsterdam"]
[Date "1954.09.15"]
[EventDate "1954.09.04"]
[Round "4"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Oscar Panno"]
[ECO "E60"]
[WhiteElo "2500"]
[BlackElo "2580"]
[PlyCount "146"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 c5 6.Nc3 Nc6 7.dxc5
Qa5 8.O-O Qxc5 9.b3 Rd8 10.e4 Qh5 11.Bd2 d6 12.Ne1 Qxd1
13.Rxd1 Bg4 14.f3 Be6 15.Nc2 a6 16.Nd5 Rab8 17.Be3 b5 18.cxb5
axb5 19.Ndb4 Nxb4 20.Nxb4 Rdc8 21.Rc1 Ne8 22.Nc6 Rb7 23.Rf2
Kf8 24.Rfc2 Bd7 25.Ne5 Rxc2 26.Nxd7+ Rxd7 27.Rxc2 b4 28. Bf1
Rc7 29.Rc4 Rxc4 30.Bxc4 Nc7 31.Kf1 Bc3 32.Bb6 Ne6 33.Bxe6 fxe6
34.Ba5 Ke8 35.Ke2 Kd7 36.Kd3 Kc6 37.a3 Kb5 38.Bd8 Bf6 39.a4+
Kc5 40.Bc7 h5 41.f4 e5 42.Bd8 h4 43.fxe5 hxg3 44.hxg3 Bxe5
45.g4 e6 46.Bh4 Bc3 47.Bg5 Be5 48. Be3+ Kc6 49.Bd2 Kc5 50.Be1
d5 51.exd5 exd5 52.Bh4 Kc6 53.Be7 Bc3 54.Bf8 Be1 55.Bh6 Bh4
56.Bd2 Be7 57.Ke3 Kc5 58.Be1 Bg5+ 59.Kf3 Bc1 60.Bf2+ Kc6
61.Be3 Bb2 62.Kf4 Bc3 63.Kg5 d4 64.Bc1 d3 65.Kxg6 d2 66.Bxd2
Bxd2 67.g5 Kd7 68.Kf6 Ke8 69.a5 Kd7 70.g6 Kc6 71.Kf7 Bc3 72.g7
Bxg7 73.Kxg7 Kb5 1/2-1/2

[Event "Amsterdam ol (Men)"]
[Site "Amsterdam"]
[Date "1954.09.19"]
[EventDate "1954.09.04"]
[Round "7"]
[Result "1-0"]
[White "Moshe Czerniak"]
[Black "Jan Hein Donner"]
[ECO "C46"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "33"]

1.e4 e5 2.Nf3 Nc6 3.Nc3 d6 4.d4 Be7 5.Bb5 exd4 6.Nxd4 Bd7
7.O-O Nf6 8.Re1 O-O 9.Nxc6 bxc6 10.Bf1 Be6 11.f4 Qb8 12.h3 Re8
13.Kh2 Qb6 14.Qf3 Rad8 15. b3 Nd7 16.Bb2 Bf8 17.Na4 1-0

[Event "Amsterdam ol (Men)"]
[Site "Amsterdam"]
[Date "1954.09.20"]
[EventDate "1954.09.04"]
[Round "8"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Gyula Kluger"]
[ECO "E64"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "151"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nbd7 7.O-O
e5 8.b3 Re8 9.Qc2 c6 10.Rd1 e4 11.Ng5 e3 12.fxe3 Nf8 13.e4 Qe7
14.e3 h6 15.Nf3 Bg4 16. Re1 Ne6 17.Ba3 Bxf3 18.Bxf3 Ng5 19.Bg2
Ngxe4 20.Nxe4 Nxe4 21.Bxe4 Qxe4 22. Qxe4 Rxe4 23.Bxd6 Rae8
24.Kf2 R8e6 25.Bb4 g5 26.Rad1 f5 27.d5 cxd5 28.Rxd5 R4e5
29.Rxe5 Bxe5 30.Rd1 Rb6 31.Bc5 Rc6 32.Rd5 b6 33.Rxe5 bxc5
34.Rxf5 Ra6 35.a4 Rb6 36.Rxc5 Rxb3 37.Rc8+ Kf7 38.Rc7+ Kf6
39.h3 a5 40.Rc6+ Kg7 41.Rc5 Rb4 42.Rxa5 Rxc4 43.Kf3 Rb4 44.g4
Rb1 45.Rb5 Rd1 46.Kg2 Re1 47.Rb3 Ra1 48. Rb4 Kf6 49.Rb6+ Kg7
50.Ra6 Ra2+ 51.Kg3 Re2 52.Re6 Ra2 53.Re4 Kf6 54.h4 gxh4+
55.Kxh4 Ra1 56.Kg3 Rg1+ 57.Kf2 Rc1 58.Kf3 Ra1 59.Ke2 Kg5
60.Kd2 Kh4 61.Kc2 Kg3 62.Kb2 Rd1 63.Re6 Rd2+ 64.Kc3 Ra2 65.Kb4
Rb2+ 66.Ka5 Rh2 67.Rg6 Kf3 68.Kb6 Rb2+ 69.Ka6 Kxe3 70.Rxh6 Rb4
71.a5 Rxg4 72.Kb7 Kd4 73.a6 Rg7+ 74.Kb6 Kc4 75.a7 Rg8 76.Rh7
1-0

[Event "Amsterdam ol (Men)"]
[Site "Amsterdam"]
[Date "1954.09.22"]
[EventDate "1954.09.04"]
[Round "9"]
[Result "1/2-1/2"]
[White "Oleg Neikirch"]
[Black "Jan Hein Donner"]
[ECO "D78"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "163"]

1.Nf3 d5 2.g3 g6 3.Bg2 Bg7 4.d4 Nf6 5.O-O O-O 6.c4 dxc4 7.Na3
Nfd7 8.Nxc4 Nb6 9.Nce5 N8d7 10.Nd3 Nf6 11.Bf4 c6 12.Rc1 Nfd5
13.Bd2 Nc7 14.e3 Bf5 15. Nc5 Qc8 16.Re1 Nd7 17.Nh4 Nxc5
18.Nxf5 Qxf5 19.Rxc5 Qd7 20.Qb3 Ne6 21.Rc2 Rfd8 22.Ba5 Rdc8
23.Bh3 f5 24.Rec1 Kf8 25.Bg2 Rab8 26.Qa4 Nc7 27.Qb3 e6 28.Bxc7
Rxc7 29.Qa3+ Kf7 30.Qxa7 Re8 31.Qb6 Rcc8 32.Rc5 Kg8 33.f4 Ra8
34. a3 Bf8 35.Ra5 Bd6 36.Rxa8 Rxa8 37.Rc3 Qc7 38.Qb3 Qd7
39.Bf1 Kf7 40.Bc4 Re8 41.Be2 h5 42.h4 Ra8 43.Qc4 Be7 44.Bf3
Kg7 45.Kf2 Kf7 46.Qb3 Kg7 47.Qc2 Kf7 48.b4 Qd6 49.Qb3 Qd7
50.Rc1 Kg7 51.Rb1 Kf7 52.a4 Ra6 53.a5 Ra8 54.Qc3 Bd8 55.Ra1
Bc7 56.Ra2 Bd8 57.Ke1 Be7 58.Kd2 Rb8 59.Kc2 Ra8 60.Kb3 Rb8
61.Qc4 Ra8 62.a6 Ra7 63.axb7 Qxb7 64.Bxc6 Qb6 65.Rxa7 Qxa7
66.Qc3 Qa6 67.d5 Bf6 68.dxe6+ Kg7 69.b5 Qa7 70.Qc1 Be7 71.Qc3+
Bf6 72.Qc1 Be7 73.Qc4 Bf6 74.Qd3 Qa1 75.Qd2 Kh7 76.Bf3 Be7
77.Qb2 Qe1 78.Qc3 Qb1+ 79.Qb2 Qd3+ 80.Ka2 Qxe3 81.b6 Qxf3
82.b7 1/2-1/2

[Event "Amsterdam ol (Men)"]
[Site "Amsterdam"]
[Date "1954.09.05"]
[EventDate "1954.09.04"]
[Round "2"]
[Result "0-1"]
[White "Toivo Salo"]
[Black "Jan Hein Donner"]
[ECO "D32"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "53"]

1.d4 Nf6 2.c4 c5 3.Nf3 e6 4.Nc3 d5 5.e3 Nc6 6.a3 dxc4 7.Bxc4
a6 8.O-O b5 9.Ba2 Bb7 10.d5 exd5 11.Nxd5 Be7 12.e4 O-O 13.Re1
Nxd5 14.Qxd5 Qc7 15.Qh5 Nd4 16.Re3 Rad8 17.Nxd4 Rxd4 18.Bb1 g6
19.Qe2 Rfd8 20.Bc2 c4 21.Rf3 Bxe4 22.Rf4 Bd3 23.Bxd3 cxd3
24.Qd2 Rxf4 25.Qxf4 Qxf4 26.Bxf4 Bf6 27.Bd2 0-1

[Event "Amsterdam ol (Men)"]
[Site "Amsterdam"]
[Date "1954.09.07"]
[EventDate "1954.09.04"]
[Round "3"]
[Result "1/2-1/2"]
[White "Ioannis Anagnostou"]
[Black "Jan Hein Donner"]
[ECO "C90"]
[WhiteElo "2050"]
[BlackElo "2500"]
[PlyCount "80"]

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.d3 Na5 10.Bc2 c5 11.Nbd2 Re8 12.Nf1 h6 13.h3 Bf8
14.a4 Bb7 15.Bd2 c4 16. d4 exd4 17.Nxd4 Nxe4 18.axb5 axb5
19.Nxb5 Qb6 20.Nd4 Nxd2 21.Qxd2 Rxe1 22. Rxe1 g6 23.Be4 d5
24.Bf3 Rd8 25.Ne3 Bc5 26.Ng4 Bxd4 27.Nxh6+ Kg7 28.cxd4 Nb3
29.Qg5 Nxd4 30.Re7 Rf8 31.Ng4 Bc8 32.Qe5+ Kh7 33.Nf6+ Kh6
34.Bxd5 Qxb2 35.Qf4+ Kg7 36.Ne8+ Kh7 37.Qh4+ Kg8 38.Nf6+ Kg7
39.Ne8+ Kg8 40.Nf6+ Kg7 1/2-1/2

[Event "Amsterdam ol (Men)"]
[Site "Amsterdam"]
[Date "1954.09.04"]
[EventDate "1954.09.04"]
[Round "1"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Fridrik Olafsson"]
[ECO "E01"]
[WhiteElo "2500"]
[BlackElo "2570"]
[PlyCount "75"]

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 c5 5.cxd5 exd5 6.Nf3 Nc6 7.O-O
Be7 8.dxc5 O-O 9.Ne1 Bxc5 10.Nd3 Be7 11.Nf4 d4 12.Nd2 Bf5
13.a3 Qd7 14.b4 Rac8 15.Bb2 a5 16.Nc4 Rcd8 17.b5 Nb8 18.a4 Bb4
19.Nb6 Qd6 20.Nbd5 Nxd5 21.Nxd5 Bc5 22. Bxd4 Be6 23.Bxc5 Qxc5
24.e4 Bxd5 25.exd5 Nd7 26.Qd2 Qa7 27.Rac1 Nc5 28.Rc4 Rd6
29.Qf4 Rfd8 30.Qe5 b6 31.Re1 g6 32.Qe3 Qd7 33.Rf4 f5 34.h4 Rf6
35.Rd4 Rff8 36.d6 Rde8 37.Qd2 Rxe1+ 38.Qxe1 1-0

[Event "Munich zt"]
[Site "Munich GER"]
[Date "1954.??.??"]
[EventDate "?"]
[Round "1"]
[Result "0-1"]
[White "Edmund Noel Mulcahy"]
[Black "Jan Hein Donner"]
[ECO "A21"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "54"]

1.c4 e5 2.Nc3 d6 3.Nf3 f5 4.d4 e4 5.Nd2 Nf6 6.e3 c6 7.Be2 d5
8.Qb3 a6 9.a4 b6 10.O-O Be6 11.f3 Bf7 12.fxe4 fxe4 13.cxd5
cxd5 14.a5 b5 15.Qc2 Nbd7 16.Nb3 Bd6 17.Na2 O-O 18.Bd2 Rc8
19.Qd1 Qe7 20.Rc1 Be6 21.Qe1 Bg4 22.Bxg4 Nxg4 23.Rxf8+ Rxf8
24.h3 Nf2 25.Rc6 Nd3 26.Qe2 Nb8 27.Rc2 Qh4 0-1

[Event "NED-ch17"]
[Site "Amsterdam"]
[Date "1954.04.05"]
[EventDate "?"]
[Round "1"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Constant Orbaan"]
[ECO "D40"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "87"]

1. d4 e6 2. c4 Nf6 3. Nc3 d5 4. Nf3 c5 5. Bg5 cxd4 6. Nxd4 e5
7. Nc2 d4 8. Nd5 Bf5 9. f3 Be7 10. Nxe7 Qxe7 11. e4 Bg6 12. b4
O-O 13. Bd3 Qe6 14. O-O Nfd7 15. Qe2 f6 16. Bd2 Bf7 17. f4 Kh8
18. f5 Qe7 19. Rfb1 Rc8 20. a4 Nc6 21. a5 Nd8 22. c5 a6
23. Na3 Bg8 24. Nc4 Nf7 25. g4 Rc7 26. h4 Rf8 27. Kf2 Nd8
28. Rh1 Rc6 29. Rh3 Rc7 30. Kg2 Rc6 31. Rah1 Rc7 32. Rg3 Rc6
33. Nd6 Rc7 34. g5 Nf7 35. Nxf7+ Qxf7 36. g6 Qe7 37. h5 Nb8
38. h6 Qe8 39. hxg7+ Rxg7 40. Bh6 hxg6 41. Bxg7+ Kxg7
42. Rxg6+ Kf7 43. Bc4+ Ke7 44. Bxg8 1-0

[Event "Hastings 5455"]
[Site "Hastings, England"]
[Date "1954.??.??"]
[EventDate "?"]
[Round "2"]
[Result "0-1"]
[White "William Albert Fairhurst"]
[Black "Jan Hein Donner"]
[ECO "A42"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "134"]

1.c4 Nf6 2.d4 d6 3.Nc3 Nbd7 4.Nf3 c6 5.e4 e5 6.Be2 g6 7.O-O
Bg7 8.h3 O-O 9.Be3 Re8 10.d5 c5 11.Qd2 Nf8 12.Ne1 N6d7 13.g4
f5 14.gxf5 gxf5 15.exf5 Nf6 16.Bg5 Bxf5 17.Kh2 Qd7 18.Rg1 Ng6
19.Qe3 e4 20.Ng2 Kh8 21.Nh4 Nxh4 22.Bxh4 Rg8 23.Rg3 Qe8
24.Rag1 Bg6 25.R3g2 a6 26.a4 Qf7 27.Bg3 Rad8 28.Qg5 Qd7 29.Qh4
Rdf8 30.Bf4 Nh5 31.Be3 Bf6 32.Qg4 Be5+ 33.Kh1 Qxg4 34.Bxg4 Nf4
35.Bxf4 Rxf4 36.Ne2 Rf6 37.Bh5 Rgf8 38.Bxg6 hxg6 39.Ng3 e3
40.fxe3 Rf3 41.e4 R8f4 42.Re2 Rh4 43.Nf1 Rfxh3+ 44.Kg2 Rb3
45.Rh1 Rxh1 46.Kxh1 Bf4 47.Kg2 Kg7 48.Nh2 Bxh2 49.Kxh2 Kf6
50.Rf2+ Ke5 51.Rg2 Kxe4 52.Rxg6 Kd3 53.Rxd6 Kxc4 54.a5 Rxb2+
55.Kg3 Rb5 56.Rd7 Rxa5 57.Rxb7 Kxd5 58.Kf3 Kd4 59.Rd7+ Kc3
60.Rd5 Ra3 61.Ke2 c4 62.Rc5 a5 63.Rc8 a4 64.Rc7 Ra1 65.Rh7 a3
66.Rh3+ Kb2 67.Rh2 a2 0-1

[Event "Hastings 5455"]
[Site "Hastings, England"]
[Date "1954.??.??"]
[EventDate "?"]
[Round "4"]
[Result "1-0"]
[White "Wolfgang Unzicker"]
[Black "Jan Hein Donner"]
[ECO "C97"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "59"]

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 Re8 13.Nf1
Nc4 14.a4 Bb7 15.b3 Nb6 16.a5 Nbd7 17.d5 g6 18.Ng3 Kg7 19.Be3
Ng8 20.Qd2 Bc8 21.Nh2 Nf8 22.Rf1 Bd7 23.f4 exf4 24.Rxf4 Bg5
25.Rxf7+ Kxf7 26.Bxg5 Kg7 27.c4 h6 28.Qc3+ Kh7 29.Rf1 Bxh3
30.Bf4 1-0

[Event "Munich zt"]
[Site "Munich, Germany"]
[Date "1954.??.??"]
[EventDate "?"]
[Round "16"]
[Result "1/2-1/2"]
[White "Wolfgang Unzicker"]
[Black "Jan Hein Donner"]
[ECO "B17"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "58"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Nf3 Ngf6 6.Ng3 e6
7.Bd3 Be7 8.O-O O-O 9.c4 c5 10.dxc5 Nxc5 11.Bc2 Qxd1 12.Rxd1
b6 13.b3 Bb7 14.Ne5 Rfd8 15.Bb2 Rxd1+ 16.Rxd1 Rd8 17.Rxd8+
Bxd8 18.f3 Be7 19.Ne2 Nfd7 20.Nxd7 Nxd7 21.Kf2 f5 22.Nf4 Kf7
23.Nd3 Bf6 24.Bxf6 Kxf6 25.b4 g5 26.Ke2 Ne5 27.Nxe5 Kxe5
28.Kd3 h5 29.Bd1 f4 1/2-1/2

[Event "Hastings 5455"]
[Site "Hastings, England"]
[Date "1954.??.??"]
[EventDate "?"]
[Round "5"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "C H Alexander"]
[ECO "A81"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "78"]

1.d4 f5 2.g3 g6 3.Bg2 Bg7 4.Nf3 Nf6 5.O-O O-O 6.b3 Ne4 7.Bb2
Nc6 8.Nbd2 d5 9.e3 e6 10.Ne1 b6 11.Nd3 Ba6 12.Nf3 Rc8 13.Re1
Ng5 14.Nf4 Nxf3+ 15.Qxf3 Re8 16.Nxd5 Kh8 17.Nf4 Nb4 18.Qd1 c5
19.c3 e5 20.a3 Nc6 21.dxe5 Nxe5 22.c4 b5 23.cxb5 Bxb5 24.Qc2
c4 25.Red1 Qe7 26.Bd4 cxb3 27.Qxb3 Bc6 28.Bxc6 Rxc6 29.Qd5 Rd6
30.Qg2 Red8 31.Rdc1 Qf7 32.Rc3 g5 33.Nd3 Nxd3 34.Rxd3 Bxd4
35.exd4 Rxd4 36.Rxd4 Rxd4 37.Qa8+ Kg7 38.Rb1 Rd7 39.Rb5 Qe6
1/2-1/2

[Event "Hastings 5455"]
[Site "Hastings, England"]
[Date "1954.??.??"]
[EventDate "?"]
[Round "6"]
[Result "1/2-1/2"]
[White "Alan Phillips"]
[Black "Jan Hein Donner"]
[ECO "C53"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "106"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Bb6 5.d4 exd4 6.O-O d6 7.cxd4
Bg4 8.Bb5 Kf8 9.Be3 Qf6 10.Bxc6 bxc6 11.Nbd2 Ne7 12.a4 Ba5
13.Qb3 Bxd2 14.Nxd2 Qe6 15.Qc3 Qc8 16.f3 Be6 17.b4 f6 18.Rfc1
a6 19.Nb3 Bxb3 20.Qxb3 Rb8 21.Qc4 d5 22.exd5 Nxd5 23.Bd2 Kf7
24.Qxc6 Rd8 25.Qc4 Rb6 26.Re1 Qd7 27.Re4 Kf8 28.Ree1 h6 29.h3
Rdb8 30.Reb1 Re6 31.b5 axb5 32.axb5 Reb6 33.Bb4+ Kf7 34.Bc5
Rxb5 35.Rxb5 Rxb5 36.Re1 Qc6 37.Re7+ Kg8 38.Rxg7+ Kh8 39.Rg6
Qe8 40.Qd3 Qe3+ 41.Qxe3 Nxe3 42.Rxf6 Rb2 43.Rxh6+ Kg7 44.Re6
Nxg2 45.Re4 Kf6 46.d5 Kf5 47.Be3 Nxe3 48.Rxe3 Rd2 49.Rc3 Rxd5
50.Rxc7 Kf4 51.Rf7+ Kg3 52.Kf1 Rd2 53.Ke1 Ra2 1/2-1/2

[Event "Hastings 5455"]
[Site "Hastings, England"]
[Date "1954.??.??"]
[EventDate "?"]
[Round "8"]
[Result "1-0"]
[White "Andrija Fuderer"]
[Black "Jan Hein Donner"]
[ECO "C77"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "67"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3 d6 6.c3 g6 7.O-O Bg7
8.Re1 b5 9.Bc2 O-O 10.Nbd2 Re8 11.a4 Bb7 12.b4 Nd7 13.Nf1 Nb6
14.a5 Nd7 15.Ne3 Nf6 16.Bb3 Qd7 17.Qc2 Nd8 18.Bb2 Rc8 19.c4
bxc4 20.Nxc4 Rb8 21.Rac1 Bc6 22.Bxe5 Rxb4 23.Bc3 Rb8 24.Ne3
Bb5 25.Bxf6 Bxf6 26.Nd5 Bg7 27.Qxc7 Nb7 28.Bc4 Nc5 29.Qxd7
Nxd7 30.Bxb5 axb5 31.Nc7 Rec8 32.a6 Nc5 33.a7 Ra8 34.Nxb5 1-0

[Event "Munich zt"]
[Site "Munich, Germany"]
[Date "1954.??.??"]
[EventDate "?"]
[Round "15"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Andrija Fuderer"]
[ECO "E66"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "55"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 c5 7.O-O
Nc6 8.dxc5 dxc5 9.Nd2 Bd7 10.b3 Qc8 11.Bb2 Rd8 12.Qc1 Bh3
13.Nf3 Nd4 14.Nxd4 cxd4 15.Nd1 Bxg2 16.Kxg2 Qc6+ 17.f3 Rac8
18.e4 b5 19.cxb5 Qxb5 20.Qd2 Nd7 21.Nf2 Nc5 22.Rac1 Qa6 23.Ba1
Ne6 24.Rxc8 Rxc8 25.Nd3 Bh6 26.f4 Qc6 27.Nf2 Bg7 28.Rc1
1/2-1/2

[Event "Hastings 5455"]
[Site "Hastings, England"]
[Date "1954.??.??"]
[EventDate "?"]
[Round "9"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Ludek Pachman"]
[ECO "A63"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "72"]

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.Nd2 Re8 11.Re1 a6 12.a4 Rb8 13.Nc4
Ne5 14.Na3 Re7 15.h3 Ne8 16.f4 Nd7 17.Kh2 f5 18.e4 fxe4 19.Nc4
Ndf6 20.g4 b5 21.axb5 axb5 22.Na5 Bd7 23.g5 Nh5 24.Rxe4 b4
25.Ne2 Rxe4 26.Bxe4 Ra8 27.Nb3 Rxa1 28.Nxa1 Qc8 29.Qd3 c4
30.Qf3 b3 31.Nxb3 cxb3 32.Qxb3 Qc5 33.Be3 Qb5 34.Qxb5 Bxb5
35.Nc3 Bxc3 36.bxc3 Nhg7 0-1

[Event "Munich zt"]
[Site "Munich zt"]
[Date "1954.??.??"]
[EventDate "?"]
[Round "8"]
[Result "1-0"]
[White "Roman Toran Albero"]
[Black "Jan Hein Donner"]
[ECO "C97"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "79"]

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
Bd7 13. Nf1 Nc4 14. Ne3 Nxe3 15. Bxe3 Bc6 16. d5 Bd7 17. Nh2
Rfe8 18. f4 exf4 19. Bxf4 Bc8 20. a4 Bb7 21. Ng4 Nxg4 22. Qxg4
Bf6 23. Rf1 b4 24. Rf3 bxc3 25. bxc3 Be5 26. Raf1 Bxf4
27. Qxf4 f6 28. Rg3 Re5 29. Qxf6 Qe7 30. Qxe7 Rxe7 31. a5 Bc8
32. Rb1 Rb7 33. Rxb7 Bxb7 34. c4 Rd8 35. Rb3 Bc8 36. Rb8 g6
37. Bd1 Re8 38. Bg4 Bd7 39. Rxe8+ Bxe8 40. Bc8 1-0

[Event "Ch Club Argentino"]
[Site "Buenos Aires (Argentina)"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Arthur Bisguier"]
[ECO "A55"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "82"]

1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.c4 Ngf6 5.Nc3 c6 6.Be2 Be7 7.O-O
Qc7 8.Ne1 O-O 9.Be3 Re8 10.Nc2 Bf8 11.f3 a6 12.Qd2 b5 13.cxb5
cxb5 14.Rfc1 Nb6 15.Nb4 Qb7 16.d5 Bd7 17.Nc6 Rec8 18.Na5 Qb8
19.b3 Be7 20.a3 Bd8 21.Na2 Rxc1+ 22.Rxc1 Nc8 23.Nc6 Bxc6
24.dxc6 Bb6 25.Nb4 Ne7 26.Bxb6 Qxb6+ 27.Kf1 Rd8 28.Qc3 Rc8
29.Qd3 Rd8 30.g3 Ne8 31.f4 a5 32.Nd5 Nxd5 33.exd5 exf4 34.gxf4
Nc7 35.Rd1 Qc5 36.Qd4 Qxa3 37.Bxb5 Qxb3 38.Be2 Re8 39.Rd3 Qb1+
40.Rd1 Qf5 41.Rd3 Re4 0-1

[Event "Izt"]
[Site "Goteborg (Sweden)"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Arthur Bisguier"]
[Black "Jan Hein Donner"]
[ECO "B59"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "75"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Be2 e5 7.Nb3
Be7 8.O-O O-O 9.Be3 Be6 10.Bf3 a5 11.Nd5 Bxd5 12.exd5 Nb8
13.c4 Nfd7 14.Bd2 Nc5 15.Nxa5 Rxa5 16.b4 Ra7 17.bxc5 dxc5
18.a4 Bd6 19.g3 Qc7 20.Qb1 Na6 21.Be4 g6 22.Bh6 Re8 23.g4 Nb4
24.Ra3 Rea8 25.Qd1 Qe7 26.g5 Na6 27.Re1 Qd7 28.Bg2 Nc7 29.Bh3
Qe8 30.f4 Rxa4 31.Rxa4 Rxa4 32.fxe5 Bxe5 33.d6 Bd4+ 34.Kh1 Ne6
35.Qf3 Qa8 36.Bxe6 fxe6 37.d7 b6 38.Rf1 1-0

[Event "Goteborg m"]
[Site "Goteborg m"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "5"]
[Result "1-0"]
[White "David Bronstein"]
[Black "Jan Hein Donner"]
[ECO "E75"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "49"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 c5
7. d5 h6 8. Bf4 Ne8 9. Nf3 a6 10. Qd2 Kh7 11. O-O e5 12. dxe6
Bxe6 13. e5 Nc6 14. exd6 Nd4 15. Ne4 b6 16. Rfe1 Ra7 17. Nxd4
cxd4 18. Bd3 Bc8 19. Qb4 a5 20. Qa3 f5 21. Nd2 Rf6 22. c5 bxc5
23. Qxc5 Raf7 24. Nc4 Ba6 25. Qc6 1-0

[Event "Ch Club Argentino, Buenos Aires (Argentina)"]
[Site "Ch Club Argentino, Buenos Aires (Argentina)"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Borislav Ivkov"]
[ECO "E86"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "77"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 e5
7. Nge2 c6 8. Qd2 Qa5 9. d5 cxd5 10. Nxd5 Qxd2+ 11. Kxd2 Nxd5
12. cxd5 f5 13. Nc3 a6 14. Be2 Nd7 15. g4 fxg4 16. fxg4 Nf6
17. h3 Bd7 18. a4 Rac8 19. Bd3 h6 20. Ne2 Nh7 21. b3 Rf3
22. Raf1 Rcf8 23. Rxf3 Rxf3 24. Nc3 Bf6 25. Ke2 Rg3 26. Nd1
Ng5 27. Nf2 Nxh3 28. Rxh3 Rxh3 29. Nxh3 Bxg4+ 30. Kf2 Bxh3
31. Kg3 Bd7 32. Bxh6 Bd8 33. Be2 b5 34. axb5 axb5 35. Bg4 Bxg4
36. Kxg4 Bb6 37. Bd2 Kf7 38. b4 Bg1 39. Bc3 1/2-1/2

[Event "Holland"]
[Site "Holland"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Max Euwe"]
[ECO "A15"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "44"]

1. Nf3 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. d4 d6 6. O-O Nbd7
7. Qc2 e5 8. Rd1 Re8 9. Nc3 c6 10. e4 Qc7 11. h3 b5 12. c5
dxc5 13. dxe5 Nxe5 14. Nxe5 Qxe5 15. f4 Qh5 16. e5 Bxh3
17. exf6 Bxf6 18. Ne4 Rxe4 19. Bxe4 Re8 20. Be3 Bf5 21. Qxc5
Rxe4 22. Rd2 Qf3 0-1

[Event "Goteborg izt"]
[Site "Goteborg izt"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "3"]
[Result "1/2-1/2"]
[White "Efim Geller"]
[Black "Jan Hein Donner"]
[ECO "C11"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "57"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 dxe4 5.Nxe4 Be7 6.Bxf6 Bxf6
7.Nf3 Nd7 8.c3 Qe7 9.Bd3 O-O 10.Qc2 g6 11.h4 e5 12.h5 exd4
13.hxg6 hxg6 14.O-O-O dxc3 15.Nxc3 Nb6 16.Rde1 Qd7 17.Ne5 Bxe5
18.Rxe5 Qd6 19.f4 Bd7 20.g4 Bc6 21.Be4 Kg7 22.g5 Rh8 23.Rd1
Qb4 24.Qf2 Rad8 25.Rxd8 Rxd8 26.Bxc6 bxc6 27.f5 gxf5 28.Qxf5
Qd6 29.Re2 1/2-1/2

[Event "Goteborg ct (15.08.55)"]
[Site "01"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Paul Keres"]
[Black "Jan Hein Donner"]
[ECO "B45"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "112"]

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 e6 6.Ndb5 Bb4
7.a3 Bxc3+ 8.Nxc3 d5 9.exd5 Nxd5 10.Nxd5 Qxd5 11.Qxd5 exd5
12.Bg5 f6 13.Be3 Be6 14.O-O-O Kf7 15.Be2 Rhd8 16.c3 Bf5 17.Bd3
Bxd3 18.Rxd3 Rd7 19.Rhd1 Rad8 20.a4 Ne5 21.Rd4 Nc4 22.Bf4 g5
23.Bg3 f5 24.h4 f4 25.Bh2 h6 26.b3 Ne5 27.f3 Ke6 28.Bg1 b6
29.Bf2 Kf5 30.hxg5 hxg5 31.Rh1 Kg6 32.Rd2 Re8 33.Kc2 g4 34.Bd4
gxf3 35.gxf3 Nxf3 36.Rg2+ Kf5 37.Rh5+ Ke6 38.Rh6+ Ke7 39.Bf6+
Kd6 40.Be5+ Ke7 41.Bf6+ Kd6 42.Rf2 Ng1 43.Rxf4 Re6 44.Rf1 Ne2
45.Bg5 Rxh6 46.Bxh6 Kc6 47.Kd3 Ng3 48.Rf6+ Kb7 49.b4 Ne4
50.Rg6 Nd6 51.Re6 a6 52.Bf4 Nc4 53.Kd4 Rf7 54.Bg3 Rd7 55.Rg6
a5 56.Bf4 Nb2 1/2-1/2

[Event "Hastings (05.01.55)"]
[Site "07"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Paul Keres"]
[ECO "A63"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "68"]

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.Nd2 a6 11.a4 Rb8 12.Nc4 Ne8 13.a5
Ne5 14.Nb6 Nc7 15.f4 Ng4 16.Nc4 Re8 17.Ne4 Nb5 18.h3 Bf5
19.hxg4 Bxe4 20.e3 f5 21.Bxe4 Rxe4 22.Qd3 Qd7 23.Bd2 h6
24.Rad1 Rbe8 25.gxf5 Qxf5 26.Bc1 Qh3 27.Rf2 g5 28.Ne5 R8xe5
29.fxe5 Qxg3+ 30.Rg2 Qxe5 31.b3 Nc3 32.Re1 Nxd5 33.Rd1 Nc3
34.Bb2 Rxe3 0-1

[Event "Goteborg izt"]
[Site "Goteborg izt"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "12"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Miguel Najdorf"]
[ECO "E60"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "80"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 d6 6.O-O Nbd7 7.Qc2
e5 8.Rd1 Re8 9.Nc3 c6 10.e4 Qe7 11.b3 a5 12.Ba3 exd4 13.Nxd4
Nc5 14.Re1 Qe5 15.Rad1 Qh5 16.Bc1 Bh3 17.Bxh3 Qxh3 18.f3 Nfd7
19.Nce2 Ne5 20.Nf4 Qd7 21.Kg2 Qc7 22.Be3 Qb6 23.Rb1 Qa6 24.Bf2
Rac8 25.Red1 a4 26.Nde2 axb3 27.axb3 Qa3 28.Nc1 b5 29.cxb5
cxb5 30.Qa2 Qxa2 31.Nxa2 g5 32.Nd5 g4 33.f4 Nxe4 34.Nab4 Nf3
35.Be3 Nc3 36.Rdc1 Kf8 37.Nxc3 Rxe3 38.Ncd5 Re2+ 39.Kf1 Rce8
40.Rc2 Rxc2 0-1

[Event "Buenos"]
[Site "04"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Ludek Pachman"]
[Black "Jan Hein Donner"]
[ECO "A17"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "51"]

1.c4 Nf6 2.Nc3 e6 3.Nf3 d5 4.cxd5 exd5 5.d4 Ne4 6.Qc2 Nxc3
7.bxc3 Nc6 8.g3 Bd6 9.Bg2 Ne7 10.O-O O-O 11.c4 c6 12.Ne5 Re8
13.cxd5 Nxd5 14.Nc4 Bf8 15.a3 Nb6 16.Nxb6 Qxb6 17.Rd1 Qb5
18.e4 Qh5 19.f3 Bh3 20.Bh1 Be6 21.Rb1 Re7 22.a4 Rd7 23.Be3 Qa5
24.f4 Re8 25.f5 Bxf5 26.Bd2 1-0

[Event "Czechoslovakia vs. Holland"]
[Site "Czechoslovakia vs. Holland"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Ludek Pachman"]
[Black "Jan Hein Donner"]
[ECO "A10"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "63"]

1.c4 g6 2.Nc3 Bg7 3.g3 Nf6 4.Bg2 O-O 5.e4 e5 6.Nge2 d6 7.O-O
Nfd7 8.d3 f5 9.exf5 gxf5 10.Be3 Nf6 11.Qd2 c6 12.h3 Nh5 13.f4
Qe8 14.Kh2 Qg6 15.Qe1 Nd7 16.Rd1 Kh8 17.d4 Rg8 18.Qf2 Bf6
19.dxe5 dxe5 20.Rd6 exf4 21.Nxf4 Nxf4 22.Bxf4 Qf7 23.Re1 Bg7
24.Rde6 Nf8 25.Re7 Qxc4 26.Rxg7 Rxg7 27.Re8 Kg8 28.Bd6 Rf7
29.Qe3 f4 30.Qe5 Rf5 31.Rxf8+ Rxf8 32.Qg5+ 1-0

[Event "Goteborg izt"]
[Site "06"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Ludek Pachman"]
[ECO "B91"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "82"]

1.Nf3 c5 2.e4 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.g3 e5 7.Nde2
b5 8.Bg2 Bb7 9.h3 Be7 10.O-O Nbd7 11.Nd5 Nxd5 12.exd5 O-O
13.f4 Rc8 14.fxe5 Nxe5 15.b3 Bg5 16.Kh2 Bxc1 17.Qxc1 Rc5
18.Qd2 Nd7 19.a4 Qc7 20.Rfc1 bxa4 21.Rxa4 Nf6 22.c4 Re8
23.Raa1 Nd7 24.Nd4 Ne5 25.Nf3 Nxf3+ 26.Bxf3 a5 27.Re1 Rxe1
28.Rxe1 Qd8 29.Qe3 Kf8 30.Qc3 Bc8 31.Ra1 Bf5 32.h4 h6 33.Kg2
Kg8 34.Ra2 Kf8 35.Ra1 Kg8 36.Ra2 Kf8 37.Qc1 Qb6 38.Qe3 Qd8
39.Qc3 Kg8 40.Ra1 Kf8 41.Ra2 Kg8 1/2-1/2

[Event "NED"]
[Site "Match Rotterdam"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Ludek Pachman"]
[ECO "A25"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "80"]

1.c4 e5 2.Nc3 Nc6 3.e3 d6 4.g3 g6 5.Bg2 Bg7 6.Nge2 Bd7 7.Nd5
Qc8 8.b4 Nce7 9.Nec3 Nxd5 10.cxd5 Nf6 11.Bb2 O-O 12.O-O Bh3
13.Rc1 Bxg2 14.Kxg2 Qd7 15.d4 e4 16.f4 Qf5 17.Qb3 a6 18.a4 h5
19.Ba3 h4 20.b5 axb5 21.axb5 hxg3 22.hxg3 Qg4 23.Rf2 Nh5
24.Ne2 Bf6 25.Kh2 Kg7 26.Rg2 Rh8 27.Kg1 Rh7 28.b6 Rah8 29.Rf1
Bd8 30.Rff2 Nxg3 31.Nxg3 Qxg3 32.Kf1 Rh1+ 33.Ke2 Qh3 34.Qc2
Bh4 35.Qxe4 Bxf2 36.Rxg6+ Kf8 37.bxc7 Qf1+ 38.Kd2 Qd1+ 39.Kc3
Be1+ 40.Kc4 Qa4+ 0-1

[Event "Goteborg m"]
[Site "Goteborg m"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "21"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Petrosian"]
[ECO "A61"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "82"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6
7. Nd2 Nbd7 8. g3 Bg7 9. Bg2 O-O 10. O-O Qe7 11. h3 b6 12. a4
Ba6 13. Re1 Ne8 14. Nb5 Bxb5 15. axb5 Nc7 16. Qb3 Nf6 17. Nb1
Rfb8 18. Nc3 a6 19. Be3 axb5 20. Nxb5 Nxb5 21. Qxb5 Nd7
22. Bd2 h5 23. Bc3 Qd8 24. f4 h4 25. g4 Bxc3 26. bxc3 Ra5
27. Qc6 Nf8 28. e4 Rc8 29. Qb7 Rb8 30. Qc6 b5 31. Rxa5 Qxa5
32. Re3 b4 33. Qxd6 Rb6 34. Qc7 bxc3 35. Re1 c2 36. Rf1 Qb4
37. Kh2 Rb7 38. Qc8 Rd7 39. Qa8 Qd2 40. Qa3 c4 41. Qa1 Rb7 0-1

[Event "it, Hastings (England)"]
[Site "it, Hastings (England)"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Vasily Smyslov"]
[ECO "E19"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "70"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O
7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 Bf6 11. Bb2 Qe7
12. Qd2 d6 13. Ne1 Bxg2 14. Nxg2 Nd7 15. Qc2 Rae8 16. Rae1 Qf7
17. e4 fxe4 18. Rxe4 e5 19. dxe5 Bxe5 20. Bxe5 Nxe5 21. f4 Qf5
22. Re2 Qxc2 23. Rxc2 Ng4 24. h3 Ne3 25. Nxe3 Rxe3 26. Kf2
Rfe8 27. Rd1 h5 28. h4 Kf7 29. Rd5 g6 30. Rg5 Kf6 31. Rd2 Rc3
32. Kg2 Rce3 33. Rf2 Re2 34. f5 Rxf2+ 35. Kxf2 gxf5 1/2-1/2

[Event "Goteborg m"]
[Site "Goteborg m"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "2"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Boris Spassky"]
[ECO "E62"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "64"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d6 6. O-O Nc6
7. Nc3 Bf5 8. b3 Ne4 9. Bb2 Qd7 10. Rc1 Nb4 11. Nxe4 Bxe4
12. Qd2 a5 13. a3 Nc6 14. d5 Bxf3 15. exf3 Bxb2 16. Qxb2 Ne5
17. f4 Nd3 18. Qc3 Nxc1 19. Rxc1 c6 20. Re1 cxd5 21. cxd5 Rfc8
22. Qe3 a4 23. b4 Rc7 24. Bf1 Rac8 25. Kg2 Qf5 26. Qd4 Qf6
27. Qa7 Qc3 28. Re3 Qd2 29. Rd3 Qa2 30. Qxa4 Rc2 31. Qa7 Rb2
32. Qd4 Rc4 0-1

[Event "Buenos Aires"]
[Site "05"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Laszlo Szabo"]
[ECO "E60"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "94"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 d6 6.O-O Nbd7 7.Qc2
e5 8.Rd1 Re8 9.Nc3 c6 10.b3 e4 11.Ng5 e3 12.fxe3 Nf8 13.e4 Qe7
14.e3 Bh6 15.Nf3 Nxe4 16.Nxe4 Qxe4 17.Qxe4 Rxe4 18.Ng5 Re7
19.Ne4 Bh3 20.Nxd6 Bxg2 21.Kxg2 Bxe3 22.Re1 Re6 23.Bxe3 Rxd6
24.Rad1 Rad8 25.Rd2 a6 26.Red1 Ne6 27.g4 f6 28.h4 Kf7 29.Kf3
h5 30.gxh5 gxh5 31.d5 cxd5 32.Rxd5 Rxd5 33.cxd5 Nf8 34.Bf2 Ng6
35.Bg3 f5 36.Ke3 f4 37.Bxf4 Re8+ 38.Kd4 Nxh4 39.Kc5 Ng2 40.Bc7
Ke7 41.Kb6 Ne3 42.Rd3 Kd7 43.Bf4 Nf5 44.Kxb7 Re4 45.Bc7 Rb4+
46.Bb6 h4 47.Kxa6 Rg4 1-0

[Event "Goteborg"]
[Site "Goteborg"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Laszlo Szabo"]
[Black "Jan Hein Donner"]
[ECO "E60"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "63"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 c6 6.Nc3 d5 7.Qb3
dxc4 8.Qxc4 Nd5 9.O-O Nb6 10.Qd3 N8d7 11.Rd1 Qe8 12.b3 f5
13.Ba3 Nf6 14.Rac1 Kh8 15.Re1 Nbd5 16.Nxd5 Nxd5 17.Ne5 Be6
18.e4 fxe4 19.Qxe4 Bg8 20.Bh3 Rd8 21.Bc5 a5 22.Qe2 Bf6 23.Qd2
Bg7 24.Re2 b6 25.Ba3 c5 26.Bb2 Nb4 27.Qe3 Nxa2 28.Ra1 cxd4
29.Bxd4 Nb4 30.Bb2 Nd5 31.Qc1 Qb5 32.Nxg6+ 1-0

[Event "Goteborg izt (04)"]
[Site "Goteborg izt (04)"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Georgy Ilivitsky"]
[ECO "E19"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "37"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O
7. Nc3 Ne4 8. Qc2 Nxc3 9. Qxc3 f5 10. b3 a5 11. a3 Bf6 12. Bb2
Qe8 13. Qd2 d6 14. Ne1 Bxg2 15. Nxg2 Nc6 16. d5 Bxb2 17. Qxb2
Nd8 18. Rae1 e5 19. f4 1/2-1/2

[Event "Goteborg izt (07)"]
[Site "Goteborg izt (07)"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Braslav Rabar"]
[Black "Jan Hein Donner"]
[ECO "E75"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "83"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 c5
7. d5 h6 8. Bf4 Qa5 9. Qd2 Kh7 10. Nf3 Nbd7 11. O-O Ne5
12. Nxe5 dxe5 13. Be3 e6 14. d6 Bd7 15. a3 Bc6 16. f3 a6
17. b4 cxb4 18. axb4 Qd8 19. c5 Nd7 20. Bc4 Qh4 21. Rfb1 Bf6
22. Qc2 Bg5 23. Bf2 Qf4 24. Rb2 h5 25. Rab1 Rfc8 26. b5 axb5
27. Bxb5 Qf6 28. Bxc6 bxc6 29. Na4 Qd8 30. Rb7 Rcb8 31. g3 Kg7
32. Kg2 Qa5 33. Rxd7 Rxb1 34. Qxb1 Qxa4 35. h4 Bd2 36. Qb2 Qd1
37. Qxe5+ Kg8 38. Qf6 Rf8 39. Rd8 Rxd8 40. Qxd8+ Kh7 41. Qf6
Kg8 42. Qd4 1-0

[Event "Goteborg izt (08)"]
[Site "Goteborg izt (08)"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "A Medina-Garcia"]
[ECO "D59"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "135"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6
7. Bh4 b6 8. cxd5 Nxd5 9. Bxe7 Qxe7 10. Nxd5 exd5 11. Be2 Be6
12. O-O Nd7 13. Qd2 c5 14. dxc5 bxc5 15. Rfc1 Rfd8 16. Qa5 Qd6
17. Rc3 Rab8 18. Qa3 Rb4 19. Rb3 Rdb8 20. Rxb4 Rxb4 21. Rd1
Qb6 22. b3 Nf6 23. Ne1 Bg4 24. Bxg4 Rxg4 25. h3 Re4 26. Nd3 c4
27. Nc5 Re8 28. Na4 Qa6 29. Qb2 Rc8 30. Nc3 Qe6 31. b4 a6
32. Rd4 Qc6 33. a3 Rc7 34. Qc2 Qe6 35. Qd1 Rd7 36. g4 Kf8
37. h4 Qe5 38. Qf3 Kg8 39. Kg2 Rd6 40. Qg3 Qxg3+ 41. Kxg3 Rc6
42. f3 Kf8 43. g5 hxg5 44. hxg5 Ne8 45. Rxd5 Nc7 46. Rd2 Nb5
47. Nb1 c3 48. Rc2 Rc4 49. Kf2 Rh4 50. Ke2 Rh1 51. Nxc3 Nxa3
52. Ra2 Rh2+ 53. Kd3 Rxa2 54. Nxa2 Ke7 55. Nc3 Kd6 56. f4 g6
57. e4 Ke6 58. Na4 Kd6 59. Nc5 Kc6 60. Nxa6 Kb5 61. Nc7+ Kxb4
62. Kd4 Nc4 63. Ne8 Kb5 64. e5 Nd2 65. Kd5 Nf3 66. Nd6+ Kb6
67. Nxf7 Kc7 68. Nh8 1-0

[Event "Goteborg izt (10)"]
[Site "Goteborg izt (10)"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Oscar Panno"]
[ECO "E63"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "50"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 d6 6. d4 Nc6
7. Nc3 a6 8. a3 Na5 9. Nd2 c5 10. e3 Bg4 11. Ne2 cxd4 12. exd4
Rc8 13. h3 Bf5 14. b4 Nxc4 15. Bxb7 Rc7 16. Bg2 Qd7 17. Nf4
Nxd2 18. Bxd2 e5 19. Ne2 Bxh3 20. dxe5 Bxg2 21. Kxg2 dxe5
22. Be3 Nd5 23. Bc5 Rd8 24. Kg1 Qb5 25. Qb3 Rxc5 0-1

[Event "Goteborg izt (11)"]
[Site "Goteborg izt (11)"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Herman Pilnik"]
[Black "Jan Hein Donner"]
[ECO "D43"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "101"]

1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 c6 5. cxd5 exd5 6. Qc2 Be7
7. Bf4 Nh5 8. Bg3 f5 9. e3 Nf6 10. Bd3 Ne4 11. a3 O-O 12. b4
a6 13. Qb3 Kh8 14. Ne2 Nd7 15. Ne5 a5 16. Bxe4 fxe4 17. O-O
Nxe5 18. Bxe5 b5 19. Nf4 Bf6 20. bxa5 Bxe5 21. dxe5 Qxa5
22. Qb4 Re8 23. Qd6 Ra6 24. Rac1 Qxa3 25. Qxa3 Rxa3 26. Rxc6
b4 27. Rb6 Ba6 28. Rc1 Bc4 29. Rxb4 Raa8 30. h4 Rxe5 31. Rb7
Kg8 32. Rd7 Rae8 33. Ra1 R8e7 34. Ra8+ Kf7 35. Rd6 g6 36. Kh2
Re8 37. Ra4 Kg7 38. g4 R8e7 39. Kg3 Kf7 40. Ra8 Re8 41. Ra5 g5
42. Rd7+ R8e7 43. Rxe7+ Kxe7 44. Ra7+ Kd6 45. hxg5 Rxg5
46. Rxh7 Rg8 47. Rh6+ Kd7 48. Kh4 Ke7 49. Re6+ Kd7 50. g5 Rf8
51. Rf6 1-0

[Event "Goteborg izt (13)"]
[Site "Goteborg izt (13)"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Carlos Enrique Guimard"]
[Black "Jan Hein Donner"]
[ECO "E67"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "84"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. c4 Nbd7
7. Nc3 e5 8. dxe5 dxe5 9. h3 c6 10. Be3 Qe7 11. Qc1 Nc5
12. Rd1 a5 13. b3 Re8 14. Qa3 Nfd7 15. Rd2 f5 16. Rad1 Bf8
17. Rd6 Ne6 18. Qc1 e4 19. Ng5 Nxg5 20. Bxg5 Qf7 21. R6d2 Nc5
22. Be3 Be6 23. Nd5 a4 24. b4 cxd5 25. cxd5 Red8 26. Bxc5 Rxd5
27. Bxf8 Rxf8 28. Rxd5 Bxd5 29. a3 Bc4 30. Bf1 h5 31. Rd4 b5
32. Qd2 Qg7 33. h4 Kh7 34. Rd6 Rf7 35. Kh2 Qe5 36. Kg1 Qg7
37. Bh3 Rf6 38. Rd4 Rf7 39. Bf1 Qe5 40. Rd8 Qa1 41. Qe3 Qg7
42. Qd2 Qa1 1/2-1/2

[Event "Goteborg izt (14)"]
[Site "Goteborg izt (14)"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Andrija Fuderer"]
[ECO "E60"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "93"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d6 6. O-O c6
7. Nc3 Qc7 8. h3 e5 9. e4 Nfd7 10. Be3 Na6 11. Re1 exd4
12. Nxd4 Nac5 13. g4 a5 14. Bf1 Re8 15. f3 a4 16. Qc2 Qa5
17. Kg2 Nb6 18. Rad1 Qb4 19. a3 Qa5 20. Bf2 Qa6 21. Na2 Be6
22. Nb4 Qa7 23. Bg3 Rad8 24. f4 Bc8 25. Nf3 Nb3 26. f5 Qb8
27. c5 Nxc5 28. Rxd6 Rxd6 29. Qxc5 Nd7 30. Qxd6 Qxd6 31. Bxd6
Bxb2 32. Nd3 Bc3 33. Rc1 Bg7 34. Rc4 Nf6 35. Nf2 gxf5 36. gxf5
b5 37. Rxc6 Bb7 38. Rb6 Nxe4 39. Nxe4 Bxe4 40. Bxb5 Rc8
41. Bd7 Rd8 42. Be7 Rxd7 43. Rb8+ Bf8 44. f6 h5 45. Kf2 Kh7
46. Rxf8 Kg6 47. Ne5+ 1-0

[Event "Goteborg izt (15)"]
[Site "Goteborg izt (15)"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Miroslav Filip"]
[Black "Jan Hein Donner"]
[ECO "E61"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "173"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 O-O 5. Bg5 c6 6. e3 d6
7. Be2 Nbd7 8. O-O h6 9. Bh4 e5 10. h3 exd4 11. Nxd4 Nb6
12. Qc2 d5 13. Rad1 Qd6 14. cxd5 Nbxd5 15. Bc4 Nxc3 16. Qxc3
Nd5 17. Qb3 Qe5 18. Bg3 Qe4 19. Nb5 cxb5 20. Bxd5 Qa4 21. Qd3
Bf5 22. e4 Be6 23. Bxe6 fxe6 24. Bd6 Rf7 25. b3 Qxa2 26. e5
Kh7 27. Qxb5 Qc2 28. Rc1 Qe4 29. Rce1 Qc2 30. Re2 Qc8 31. Qd3
Qe8 32. Rc1 Rc8 33. Rxc8 Qxc8 34. Rc2 Qe8 35. Qe3 a6 36. Qb6
h5 37. h4 Kg8 38. g3 Rd7 39. Qe3 Kh7 40. Qc1 Qf7 41. Rc4 Bh6
42. Qc2 b5 43. Rc3 a5 44. Qe2 a4 45. Rf3 Qe8 46. Qxb5 axb3
47. Rxb3 Bg7 48. Qc6 Qf7 49. Rf3 Qe8 50. Kg2 Kg8 51. Rb3 Rd8
52. Qe4 Kh7 53. Rb7 Rd7 54. Qc6 Rd8 55. Qxe8 Rxe8 56. Kf3 Kg8
57. Ke4 Bh6 58. Kd4 Bd2 59. Be7 Ra8 60. Bd6 Re8 61. Kd3 Bh6
62. Rc7 Bf8 63. Kd4 Bh6 64. Kc5 Bd2 65. Be7 Ra8 66. Kc6 Ba5
67. Rb7 Be1 68. Bf6 Bxf2 69. Rg7+ Kf8 70. Rxg6 Ra6+ 71. Kd7
Kf7 72. Rg7+ Kf8 73. Rg5 Kf7 74. Rxh5 Bxg3 75. Rh7+ Kf8
76. Rh8+ Kf7 77. h5 Ra7+ 78. Kd6 Ra6+ 79. Kc5 Ra5+ 80. Kd4
Ra4+ 81. Ke3 Bh4 82. Rh7+ Kf8 83. h6 Bg3 84. Kf3 Bf4 85. Be7+
Ke8 86. Bd6 Bg5 87. Rh8+ 1-0

[Event "Goteborg izt (16)"]
[Site "Goteborg izt (16)"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Gideon Stahlberg"]
[ECO "D50"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "46"]

1. c4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 c5 5. cxd5 cxd4 6. Qxd4
Be7 7. e4 Nc6 8. Qd2 Nxe4 9. Nxe4 exd5 10. Bxe7 Qxe7 11. Qxd5
O-O 12. f3 Nb4 13. Qc5 Qxc5 14. Nxc5 Nc2+ 15. Kd2 Nxa1 16. Bd3
Rd8 17. Ne4 Be6 18. Nh3 Rxd3+ 19. Kxd3 Rd8+ 20. Kc3 Rc8+
21. Kd2 Rd8+ 22. Kc3 Rc8+ 23. Kd2 Rd8+ 1/2-1/2

[Event "Goteborg izt (17)"]
[Site "Goteborg izt (17)"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Wolfgang Unzicker"]
[Black "Jan Hein Donner"]
[ECO "C10"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "61"]

1. e4 e6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Be7 6. Bd3
Ngf6 7. Qe2 Nxe4 8. Bxe4 c5 9. d5 e5 10. Bf5 O-O 11. O-O Bf6
12. Nd2 g6 13. Bxd7 Qxd7 14. Ne4 Bg7 15. Rd1 b6 16. Bh6 f5
17. Bxg7 Qxg7 18. Nc3 Bb7 19. a4 a5 20. Qb5 Qc7 21. d6 Qd8
22. Nd5 Bxd5 23. Rxd5 e4 24. Rad1 Kg7 25. d7 Rf6 26. h3 Re6
27. Qc4 Re7 28. Rd6 Ra7 29. Qc3+ Kg8 30. Qf6 Ra8 31. Qxe7 1-0

[Event "Goteborg izt (18)"]
[Site "Goteborg izt (18)"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Bogdan Sliwa"]
[ECO "E32"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "99"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 d6 5. a3 Bxc3+ 6. Qxc3
Nbd7 7. e3 b6 8. Ne2 Bb7 9. Ng3 h5 10. h4 Ne4 11. Nxe4 Bxe4
12. f3 Bb7 13. e4 e5 14. Be3 Qe7 15. Be2 c5 16. d5 Nf8 17. Kf2
Ng6 18. g3 Bc8 19. b4 f5 20. Bg5 Qf7 21. exf5 Bxf5 22. Kg2 O-O
23. Qe3 Rae8 24. Ra2 Qd7 25. Re1 Ne7 26. Bxe7 Qxe7 27. Bd3 Qd7
28. bxc5 bxc5 29. Rb2 Bh3+ 30. Kh2 Bf5 31. Kg2 Bh3+ 32. Kh2
Bf5 33. Be4 Re7 34. Reb1 Ref7 35. Rb8 Rxb8 36. Rxb8+ Rf8
37. Rb5 Qf7 38. Kg2 Bd7 39. Rb2 Bf5 40. Rb3 Qd7 41. Qd3 Bxe4
42. Qxe4 Qf7 43. a4 Qd7 44. Qg6 Rf6 45. Rb8+ Rf8 46. Rxf8+
Kxf8 47. Qxh5 Qxa4 48. Qf5+ Kg8 49. Qe6+ Kh7 50. Kh3 1/2-1/2

[Event "Buenos Aires CA"]
[Site "Buenos Aires"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "3"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Svetozar Gligoric"]
[ECO "E60"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "156"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 d6 6.O-O c5 7.dxc5
dxc5 8.Ne5 Nfd7 9.Nd3 Ne5 10.Nxe5 Bxe5 11.Nc3 Qa5 12.Bg5 Nc6
13.Bxc6 bxc6 14.Bxe7 Re8 15.Bg5 Qb4 16.Na4 Qxc4 17.Rc1 Qg4
18.Bd2 Ba6 19.Re1 Rad8 20.e3 Qh3 21.Nxc5 Bc8 22.Ne4 Bxb2
23.Rc2 Bg7 24.Qf3 Qf5 25.Qxf5 Bxf5 26.f3 Bxe4 27.fxe4 Rxe4
28.Kf2 c5 29.Ba5 Rc8 30.Bc3 Rc4 31.Rec1 Rxc3 32.Rxc3 Bxc3
33.Rxc3 Kf8 34.Ke2 Ke7 35.Ra3 Rc7 36.Ra6 Rb7 37.Kf3 c4 38.Rc6
Rb2 39.a4 Rxh2 40.Rxc4 Rd2 41.Rc6 Rd6 42.Rc7+ Rd7 43.Rc6 h5
44.Ra6 Kf8 45.Kf2 Kg7 46.Kf3 Rc7 47.Kf4 f6 48.Kf3 g5 49.Kf2
Kg6 50.e4 Kf7 51.Kf3 Rc3+ 52.Kf2 Rc2+ 53.Ke3 Rc7 54.Kf2 Rb7
55.Kf3 Re7 56.Rc6 a5 57.Rc5 Re5 58.Rc6 Ke7 59.Rc8 Kd6 60.Rf8
Ke6 61.Re8+ Kf7 62.Rc8 Kg7 63.Rc7+ Kg6 64.Rc6 h4 65.gxh4 gxh4
66.Rc2 Rg5 67.Kf4 Rg3 68.Rc5 Rg1 69.Rc8 Ra1 70.Rg8+ Kf7 71.Rh8
Rxa4 72.Kf5 Rb4 73.Rh7+ Ke8 74.Rxh4 Ke7 75.Rh7+ Kd6 76.Rh6
Rb5+ 77.Kxf6 Re5 78.Rh4 a4 1/2-1/2

[Event "Hoogovens"]
[Site "Beverwijk NED"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "4"]
[Result "1/2-1/2"]
[White "Moshe Czerniak"]
[Black "Jan Hein Donner"]
[ECO "A45"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "84"]

1.d4 Nf6 2.Nd2 g6 3.e3 Bg7 4.Bd3 d6 5.Ngf3 O-O 6.b3 e5 7.dxe5
Nfd7 8.Bb2 Nc6 9.O-O Ndxe5 10.Qc1 Nxd3 11.cxd3 Ne5 12.Qc2 f6
13.Rac1 c6 14.Nd4 Re8 15.b4 Kh8 16.b5 c5 17.Ne2 Be6 18.d4 Nd7
19.Ne4 Qe7 20.N4g3 a6 21.a4 axb5 22.axb5 Ra5 23.dxc5 dxc5
24.Nc3 Ne5 25.Ra1 Rxa1 26.Rxa1 Nc4 27.Rd1 Nxb2 28.Qxb2 f5
29.Qd2 Bc4 30.Nge2 Ra8 31.g3 Bb3 32.Qd7 Qxd7 33.Rxd7 b6 34.Rd6
Bc4 35.h4 Kg8 36.Rxb6 Bxc3 37.Nxc3 Ra3 38.Rc6 Rxc3 39.Rxc5
Rc1+ 40.Kh2 Rc2 41.b6 Rxf2+ 42.Kg1 Rb2 1/2-1/2

[Event "Buenos Aires CA"]
[Site "Buenos Aires"]
[Date "1955.??.??"]
[EventDate "?"]
[Round "11"]
[Result "0-1"]
[White "Roman Toran Albero"]
[Black "Jan Hein Donner"]
[ECO "C90"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "104"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5
7. Bb3 O-O 8. c3 d6 9. d3 Na5 10. Bc2 c5 11. Nbd2 Re8 12. Nf1
Bb7 13. Ng3 g6 14. Bg5 Nd7 15. Qd2 Nf8 16. Bxe7 Qxe7 17. Qh6
Ne6 18. Nf1 f6 19. Ne3 Qg7 20. Qxg7+ Kxg7 21. Rad1 Rac8
22. Nd2 Nc7 23. a4 Red8 24. Ra1 Ra8 25. axb5 axb5 26. Nb3 Nxb3
27. Bxb3 d5 28. exd5 Nxd5 29. Nxd5 Bxd5 30. Bxd5 Rxa1 31. Rxa1
Rxd5 32. Ra7+ Kh6 33. Kf1 Rxd3 34. Ke2 c4 35. Rb7 Rd5 36. Rf7
f5 37. h4 e4 38. Rb7 f4 39. Re7 f3+ 40. gxf3 exf3+ 41. Kxf3
Rd2 42. Kg3 Rxb2 43. f3 Rb3 44. Re5 Kg7 45. h5 Kf6 46. hxg6
hxg6 47. Kf4 b4 48. cxb4 Rxf3+ 49. Ke4 Re3+ 50. Kxe3 Kxe5
51. b5 g5 52. b6 Kd6 0-1

[Event "Haag"]
[Site "Haag"]
[Date "1956.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Max Euwe"]
[Black "Jan Hein Donner"]
[ECO "A15"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "107"]

1. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 c6 5. O-O O-O 6. b3 Ne4
7. d4 d5 8. Bb2 a5 9. Nfd2 Nxd2 10. Nxd2 dxc4 11. Nxc4 Nd7
12. d5 Bxb2 13. Nxb2 cxd5 14. Qxd5 Nb6 15. Qxd8 Rxd8 16. Rfd1
Rxd1+ 17. Rxd1 Be6 18. Bxb7 Ra7 19. Bc6 Rc7 20. Be4 Kg7
21. Kf1 g5 22. Ke1 Nd7 23. Bd5 Bf5 24. Nc4 Nf6 25. Ne3 Bc8
26. Bc4 e6 27. f3 Nd7 28. Bb5 Ne5 29. Nc4 Nxc4 30. bxc4 e5
31. Kd2 Kf6 32. Kc3 Ke7 33. f4 gxf4 34. gxf4 Rc5 35. Rf1 exf4
36. Rxf4 Rh5 37. h4 Be6 38. Kd4 Kd6 39. e4 Re5 40. a3 f5
41. exf5 Bxf5 42. Bc6 Re1 43. Rxf5 Rd1+ 44. Kc3 Kxc6 45. Rxa5
Rc1+ 46. Kb3 Rb1+ 47. Kc2 Rh1 48. Rh5 Rh3 49. a4 Kb6 50. Kb2
h6 51. Rxh6+ Ka5 52. c5 Kxa4 53. c6 Kb4 54. Kc2 1-0

[Event "Haag"]
[Site "Haag"]
[Date "1956.??.??"]
[EventDate "?"]
[Round "04"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Max Euwe"]
[ECO "C81"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "60"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5
7. Bb3 d5 8. dxe5 Be6 9. Qe2 Be7 10. Rd1 Nc5 11. Be3 O-O
12. c4 bxc4 13. Bxc4 Na5 14. Bxd5 Bxd5 15. b4 Bxf3 16. gxf3
Qc8 17. Bxc5 Bxc5 18. bxc5 Re8 19. Nc3 f6 20. f4 fxe5 21. fxe5
Qf5 22. Re1 Nc6 23. Qe4 Qxe4 24. Rxe4 Rxe5 25. Rxe5 Nxe5
26. Rd1 Rf8 27. Rd5 Ng4 28. Rd7 Rxf2 29. Rxc7 Rc2 30. Ne4 h6
1/2-1/2

[Event "Holland"]
[Site "Holland"]
[Date "1956.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Max Euwe"]
[ECO "C81"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "66"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. d4 b5
7. Bb3 d5 8. dxe5 Be6 9. Qe2 Be7 10. Rd1 Nc5 11. Be3 O-O
12. c4 bxc4 13. Bxc4 Na5 14. b4 Nxc4 15. Bxc5 Bxc5 16. bxc5
Qe7 17. c6 Qc5 18. Nc3 Rab8 19. Nd4 Nb2 20. Nb3 Rxb3 21. axb3
Qxc3 22. Rdc1 Qd4 23. Ra2 Nd3 24. Rd1 Bf5 25. Rad2 Nf4 26. Qe3
Qxe3 27. fxe3 Ne6 28. Ra1 Rb8 29. Rxa6 g5 30. Rb2 Rb4 31. h3
h5 32. Ra1 Rb6 33. Rc1 Nd8 0-1

[Event "Holland"]
[Site "Holland"]
[Date "1956.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Max Euwe"]
[ECO "D14"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "25"]

1. Nf3 d5 2. c4 c6 3. d4 Nf6 4. cxd5 cxd5 5. Nc3 Nc6 6. Bf4
Bf5 7. e3 e6 8. Qb3 Bb4 9. Bb5 O-O 10. O-O Bxc3 11. Bxc6 Bxb2
12. Bxb7 Bxa1 13. Rxa1 1/2-1/2

[Event "Holland"]
[Site "Holland"]
[Date "1956.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Max Euwe"]
[ECO "A15"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "32"]

1. Nf3 Nf6 2. c4 c6 3. Nc3 d5 4. e3 e6 5. b3 Nbd7 6. Be2 e5
7. cxd5 cxd5 8. O-O a6 9. d4 e4 10. Nd2 Bd6 11. Bb2 Qe7
12. Qe1 b5 13. a3 O-O 14. f4 exf3 15. Bxf3 Bb7 16. e4 dxe4
1/2-1/2

[Event "Holland"]
[Site "Holland"]
[Date "1956.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Max Euwe"]
[Black "Jan Hein Donner"]
[ECO "E56"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "37"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 d5 6. Nf3 O-O
7. O-O Nc6 8. a3 cxd4 9. exd4 dxc4 10. Bxc4 Be7 11. Be3 a6
12. Ba2 b5 13. d5 exd5 14. Nxd5 Be6 15. Nxe7+ Qxe7 16. b4 Rfd8
17. Qc1 Bxa2 18. Rxa2 Ne5 19. Nxe5 1/2-1/2

[Event "Holland"]
[Site "Holland"]
[Date "1956.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Max Euwe"]
[Black "Jan Hein Donner"]
[ECO "A56"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "70"]

1. d4 Nf6 2. c4 c5 3. d5 e5 4. Nc3 d6 5. e4 g6 6. Be2 a6 7. f4
exf4 8. Bxf4 Nbd7 9. Nf3 Ng4 10. h3 Nge5 11. Nxe5 Nxe5
12. Bxe5 dxe5 13. O-O Bd6 14. Bg4 O-O 15. Bxc8 Qxc8 16. Qg4
Qxg4 17. hxg4 Kg7 18. Rf3 Rab8 19. a4 b6 20. Raf1 f6 21. Kf2
Rb7 22. Ke2 Rbb8 23. Kd3 Rb7 24. Ra1 Ra8 25. Kc2 Rab8 26. Ra3
Rd7 27. Rb3 Rdb7 28. Nb1 Bf8 29. Na3 Bd6 30. Rh3 Kg8 31. Nb1
Kg7 32. Nd2 Rf7 33. Rh1 Rfb7 34. Rbh3 Kg8 35. Nf3 Rf8 1/2-1/2

[Event "Holland"]
[Site "Holland"]
[Date "1956.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Max Euwe"]
[Black "Jan Hein Donner"]
[ECO "D35"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "47"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3
c5 7. a3 Be7 8. Nf3 O-O 9. Bd3 Qc7 10. O-O Nc6 11. d5 Ne5
12. Bf4 Nxf3+ 13. Qxf3 e5 14. Bd2 c4 15. Bc2 Bc5 16. Kh1 Bd6
17. Qh5 b5 18. f4 g6 19. Qh6 f6 20. f5 gxf5 21. exf5 Bb7
22. Be4 Qf7 23. Rf3 Kh8 24. Rh3 1/2-1/2

[Event "Holland"]
[Site "Holland"]
[Date "1956.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Max Euwe"]
[Black "Jan Hein Donner"]
[ECO "D35"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "77"]

1. c4 Nf6 2. d4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 c6 6. e3 Be7
7. Qc2 Nbd7 8. Bd3 Nh5 9. Bxe7 Qxe7 10. Nge2 g6 11. O-O-O f5
12. Nf4 Nxf4 13. exf4 Qd6 14. Rhe1+ Kf7 15. g3 Nf6 16. Ne2 Be6
17. Ng1 Rac8 18. Nf3 Kg7 19. Kb1 Rhe8 20. Rc1 Ne4 21. Ne5 Qb4
22. f3 Nd6 23. Qf2 Nb5 24. Bxb5 Qxb5 25. Rc3 Qb4 26. Rb3 Qe7
27. Nd3 b6 28. Rc3 Qd6 29. Rec1 Rc7 30. Qc2 Bd7 31. b4 b5
32. a3 Re3 33. Ne5 Rxc3 34. Qxc3 Be8 35. Kb2 Kf8 36. Re1 Re7
37. Re3 Qf6 38. Qc5 Kg8 39. Ng4 1-0

[Event "Wageningen zt"]
[Site "10"]
[Date "1957.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Borislav Ivkov"]
[ECO "E60"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "105"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 c6 7.O-O a6
8.e4 b5 9.e5 Ne8 10.Qe2 Nc7 11.Bg5 Ne6 12.exd6 Qxd6 13.Be3
bxc4 14.Rad1 Bb7 15.Ne5 Nd7 16.Nxc4 Qc7 17.d5 cxd5 18.Nxd5
Bxd5 19.Bxd5 Rac8 20.Bxe6 fxe6 21.b3 Rf5 22.Rxd7 Qxd7 23.Nb6
Qb7 24.Nxc8 Qxc8 25.Rc1 Qb7 26.Qc4 Kf7 27.Qc6 Qb5 28.Qxb5 axb5
29.a4 bxa4 30.bxa4 Ra5 31.Rc4 Ra6 32.Kf1 Be5 33.Ke2 Ke8 34.Kd3
Kd7 35.Kc2 Bc7 36.Kb3 Ra8 37.Rc5 Bb6 38.Re5 Kd6 39.Re4 Kd5
40.Rh4 Bxe3 41.fxe3 h5 42.Rd4+ Kc5 43.Rc4+ Kd6 44.h4 Rf8
45.Rf4 Rb8+ 46.Kc3 Rb1 47.Rd4+ Kc5 48.Rc4+ Kd6 49.a5 Rg1
50.Kb2 Rxg3 51.a6 Rg2+ 52.Kb3 Rf2 53.Rc8 1-0

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1957.??.??"]
[EventDate "1957.??.??"]
[Round "?"]
[Result "0-1"]
[White "Johan Teunis Barendregt"]
[Black "Jan Hein Donner"]
[ECO "C36"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "50"]

1. e4 e5 2. f4 exf4 3. Nf3 d5 4. exd5 Nf6 5. Bb5+ c6 6. dxc6
bxc6 7. Bc4 Nd5 8. Nc3 Be6 9. Bxd5 cxd5 10. d4 Bd6 11. O-O Nc6
12. Ne5 Nxe5 13. dxe5 Bxe5 14. Qf3 O-O 15. Rd1 Qb6+ 16. Kh1
Rad8 17. Rb1 d4 18. Ne4 Bxa2 19. Ra1 Bd5 20. Bxf4 Bxf4
21. Qxf4 Qxb2 22. Ng3 d3 23. Rac1 dxc2 24. Rf1 Bb3 25. Nf5 Rd1
0-1

[Event "Wageningen zt"]
[Site "05"]
[Date "1957.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Laszlo Szabo"]
[Black "Jan Hein Donner"]
[ECO "E21"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "79"]

1.c4 Nf6 2.d4 e6 3.Nc3 Bb4 4.Nf3 c5 5.d5 exd5 6.cxd5 d6 7.e3
Nbd7 8.a3 Bxc3+ 9.bxc3 O-O 10.c4 b5 11.cxb5 Nb6 12.Bb2 Nbxd5
13.Bc4 Nb6 14.Bd3 a6 15.O-O axb5 16.Bxb5 Ba6 17.Bxa6 Rxa6
18.Qd3 Ra4 19.Ng5 Nbd5 20.Nxh7 Nxh7 21.Qxd5 Nf6 22.Qc6 Qd7
23.Qf3 Ne4 24.Qe2 Rb8 25.f3 Qb5 26.Qd1 Qb3 27.Bc1 Qxd1 28.Rxd1
Nc3 29.Rxd6 Ne2+ 30.Kf2 Nxc1 31.Rxc1 Rb2+ 32.Kg3 Rxa3 33.e4
Raa2 34.Rxc5 Rxg2+ 35.Kf4 g5 36.Rxg5+ Rxg5 37.Kxg5 Rxh2 38.Kf6
Rh6+ 39.Ke7 Rh5 40.Rd5 1-0

[Event "Wageningen zt"]
[Site "02"]
[Date "1957.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Wolfgang Uhlmann"]
[Black "Jan Hein Donner"]
[ECO "E79"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "127"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.f4 c5 7.Nf3
cxd4 8.Nxd4 Nc6 9.Be3 Ng4 10.Bxg4 Bxd4 11.Bxd4 Bxg4 12.Qd2
Nxd4 13.Qxd4 e5 14.fxe5 dxe5 15.Qxe5 Re8 16.Qg3 Bf5 17.O-O
Bxe4 18.Qf2 Qc7 19.Nb5 Qb6 20.Qxb6 axb6 21.Nc7 f5 22.Rfd1 Rac8
23.Nxe8 Rxe8 24.Rd2 Kg7 25.Kf2 Kh6 26.a4 Rc8 27.b3 Kh5 28.Re1
Rc7 29.Rd6 Bc6 30.Re5 Kg4 31.h3+ Kf4 32.Re2 Kg5 33.g3 Rf7
34.Re5 Kh5 35.Rde6 Rf8 36.Ke3 Rd8 37.g4 Kg5 38.gxf5 gxf5
39.Re7 Rd1 40.h4+ Kxh4 41.Rxh7+ Kg5 42.Rf7 Re1+ 43.Kd4 Rd1+
44.Kc3 Rf1 45.Kb4 Kg6 46.Ree7 Rd1 47.Rf8 Rd3 48.Re1 Rf3
49.Rg1+ Kh7 50.Rfg8 Be4 51.R8g7+ Kh8 52.R1g3 Rxg3 53.Rxg3 Bc6
54.Kc3 Kh7 55.Kd4 f4 56.Rg1 Kh6 57.Ke5 f3 58.Kf5 Bd7+ 59.Kf4
Bc6 60.b4 f2 61.Rf1 Bxa4 62.Rxf2 Bb3 63.c5 bxc5 64.bxc5 1-0

[Event "Wageningen zt"]
[Site "Wageningen"]
[Date "1957.10.26"]
[EventDate "?"]
[Round "12"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Bent Larsen"]
[ECO "E66"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "77"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nc6 7.O-O
a6 8.d5 Na5 9.Nd2 c5 10.Qc2 Rb8 11.b3 b5 12.cxb5 axb5 13.Bb2
b4 14.Nd1 Ba6 15.Re1 Bh6 16.e4 Bxd2 17.Qxd2 c4 18.e5 Ne8
19.Qd4 c3 20.Nxc3 bxc3 21.Bxc3 f6 22.Qa7 Nxb3 23.axb3 Ra8
24.Ba5 Rxa7 25.Bxd8 fxe5 26.f4 Ng7 27.Bb6 Raa8 28.fxe5 Nf5
29.exd6 exd6 30.Bf2 Rfb8 31.g4 Nh6 32.Re7 Nxg4 33.Bd4 Rb4
34.Rg7+ Kf8 35.Rxh7 Bb7 36.Rf1+ Ke8 37.Bg7 Rd8 38.Rf8+ Kd7
39.Bf6+ 1-0

[Event "FRG-NED"]
[Site "Dortmund"]
[Date "1957.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1-0"]
[White "Klaus V Darga"]
[Black "Jan Hein Donner"]
[ECO "D37"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "55"]

1.c4 Nf6 2.Nc3 e6 3.Nf3 d5 4.d4 Be7 5.cxd5 exd5 6.Bg5 c6 7.Qc2
Na6 8.a3 g6 9.e3 Bf5 10.Bd3 Ne4 11.Bxe7 Qxe7 12.g4 Bxg4 13.Ne5
Bf5 14.Bxa6 bxa6 15.Nxd5 Qb7 16.Qxc6+ Qxc6 17.Nxc6 Rc8 18.Nde7
Rc7 19.Nxf5 gxf5 20.Rc1 Rg8 21.f3 Rg6 22.d5 Nd6 23.Kf2 Rh6
24.h4 a5 25.Rh2 Rb7 26.Kg3 Rb3 27.Kf4 a4 28.Nd4 1-0

[Event "Wageningen zt"]
[Site "Wageningen"]
[Date "1957.10.26"]
[EventDate "?"]
[Round "3"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Octavio Troianescu"]
[ECO "E56"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "53"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 O-O 6.Nf3 d5 7.O-O
Nc6 8.a3 cxd4 9.exd4 dxc4 10.Bxc4 Be7 11.Re1 a6 12.Ba2 b5
13.d5 exd5 14.Nxd5 Nxd5 15.Qxd5 Bb7 16.Qh5 g6 17.Qh6 Nd4
18.Ng5 Bxg5 19.Bxg5 Qb6 20.Rad1 Rac8 21.Re7 Qd6 22.Kh1 Qc6
23.Rxb7 Nf5 24.Bd5 Qc2 25.Rc1 Qe2 26.Bxf7+ Kh8 27.Bf6+ 1-0

[Event "NED-ch"]
[Site "Amsterdam"]
[Date "1957.??.??"]
[EventDate "?"]
[Round "4"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "C B Van den Berg"]
[ECO "C63"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "103"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.d3 fxe4 5.dxe4 Nf6 6.O-O d6 7.Qd3
Bg4 8.Nc3 Be7 9.Nh4 O-O 10.f3 Bd7 11.Bc4+ Kh8 12.Nf5 Bxf5
13.exf5 Nb4 14.Qe2 d5 15.Rd1 c6 16.a3 Nxc2 17.Qxc2 Qb6+ 18.Kh1
dxc4 19.Qe2 Rad8 20.Qxe5 Rxd1+ 21.Nxd1 Nd5 22.Rb1 Bf6 23.Qe4
Qb3 24.Ne3 Rd8 25.Nf1 Qd3 26.Bd2 b5 27.Re1 h6 28.Bc1 Ne7
29.Ne3 c3 30.b3 a5 31.Ng4 Rd4 32.Qxd3 Rxd3 33.Nxf6 gxf6 34.g4
c2 35.Kg2 Nd5 36.Re2 Rxb3 37.Rxc2 Rc3 38.Rxc3 Nxc3 39.Bb2 Nd5
40.Kf2 Kg8 41.Ke2 Kf7 42.Kd3 b4 43.Bc1 h5 44.axb4 axb4 45.Kc4
Nc3 46.h3 Nd1 47.Kxb4 h4 48.Kc5 Nf2 49.Be3 Nd3+ 50.Kxc6 Ne5+
51.Kd5 Nxf3 52.Ke4 1-0

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1957.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1-0"]
[White "Roman Toran Albero"]
[Black "Jan Hein Donner"]
[ECO "C97"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "59"]

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
Re8 13. Nf1 g6 14. Ne3 Bf8 15. b4 cxb4 16. cxb4 Nc6 17. Bb2
Bb7 18. Bb3 Bg7 19. Rc1 Qd8 20. dxe5 Nxe5 21. Bxe5 dxe5
22. Qxd8 Raxd8 23. Rc7 Rd7 24. Rxd7 Nxd7 25. Ng5 Re7 26. Rc1
Bh6 27. Nxf7 Bxe3 28. fxe3 Kg7 29. Rc7 Bxe4 30. Nd6 1-0

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1957.??.??"]
[EventDate "?"]
[Round "9"]
[Result "0-1"]
[White "Johan Bink"]
[Black "Jan Hein Donner"]
[ECO "C46"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "74"]

1. e4 e5 2. Nf3 Nc6 3. Nc3 Bb4 4. Nd5 Be7 5. Bc4 Nf6 6. Nxe7
Qxe7 7. d3 Na5 8. Bb3 Nxb3 9. axb3 d6 10. Be3 b6 11. h3 h6
12. Qd2 d5 13. exd5 Nxd5 14. O-O O-O 15. Rae1 Bb7 16. Bf4 f6
17. Bg3 c5 18. Nh4 Qd7 19. Ng6 Rfe8 20. f4 Qf7 21. f5 Rad8
22. Qf2 Nb4 23. Re2 Nc6 24. Rfe1 Nd4 25. Re3 a5 26. Bh2 Kh7
27. Nh4 Qd7 28. Kf1 Ra8 29. Kg1 Kg8 30. Rd1 Qb5 31. Rg3 Qd7
32. Re3 a4 33. bxa4 Qxa4 34. Rc1 Red8 35. Ree1 Qb5 36. b3 Ra2
37. Bg3 Qd7 0-1

[Event "Netherlands"]
[Site "It, Wageningen"]
[Date "1958.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Mikhail Botvinnik"]
[Black "Jan Hein Donner"]
[ECO "E63"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "84"]

1.c4 Nf6 2.Nf3 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O d6 6.Nc3 a6 7.d4
Nc6 8.d5 Na5 9.Nd2 c5 10.Qc2 Rb8 11.b3 b5 12.Bb2 bxc4 13.bxc4
Bh6 14.f4 e5 15.Rae1 exf4 16.gxf4 Re8 17.Nd1 Rb7 18.Bc3 Bd7
19.e3 Nh5 20.Nf2 Bg7 21.Bxg7 Nxg7 22.Qc3 f5 23.Bf3 Bc8 24.Nd3
Rf7 25.Rf2 Nb7 26.Rfe2 Ref8 27.Nf1 Qa5 28.Qxa5 Nxa5 29.Rc2 Rb7
30.Nd2 Ne8 31.Rc3 Rb6 32.Ra3 Nb7 33.Rb1 Rxb1+ 34.Nxb1 Nc7
35.Nd2 Kf7 36.Kf2 Ke7 37.h4 h6 38.Bd1 Bd7 39.Rb3 Na5 40.Rb6
Ra8 41.Nxc5 dxc5 42.d6 Kf7 1-0

[Event "Munich ol"]
[Site "Munich ol"]
[Date "1958.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Mikhail Botvinnik"]
[Black "Jan Hein Donner"]
[ECO "E25"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "46"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.f3 d5 7.cxd5
Nxd5 8.Qd2 Nc6 9.e4 Nb6 10.Bb5 Bd7 11.Ne2 Na5 12.Rb1 Rc8
13.Bd3 Ba4 14.O-O O-O 15.dxc5 Nd7 16.Nd4 Nxc5 17.Be2 Qf6
18.Qe3 Rfd8 19.Bb2 Qg6 20.c4 b6 21.Bc3 Nc6 22.Rb2 Nxd4 23.Bxd4
f6 1/2-1/2

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1958.??.??"]
[EventDate "?"]
[Round "01"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Max Euwe"]
[ECO "E12"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "56"]

1. Nf3 Nf6 2. c4 e6 3. d4 b6 4. Nc3 Bb7 5. e3 Be7 6. Bd3 c5
7. O-O cxd4 8. exd4 d5 9. cxd5 Nxd5 10. Ne5 O-O 11. Qf3 Nd7
12. Qh3 f5 13. Bc4 N7f6 14. Re1 Ne8 15. Nc6 Bxc6 16. Rxe6 Bd6
17. Nxd5 Bxd5 18. Bxd5 Bxh2+ 19. Qxh2 Qxd5 20. Qe5 Nc7
21. Qxd5 Nxd5 22. Bg5 h6 23. Rd6 hxg5 24. Rxd5 Rad8 25. Rxd8
Rxd8 26. Rd1 Kf7 27. Kf1 Ke6 28. Ke2 Kd5 1/2-1/2

[Event "Munich ol (Men) fin-B"]
[Site "Munich"]
[Date "1958.09.30"]
[EventDate "?"]
[Round "3"]
[Result "1/2-1/2"]
[White "Bogdan Sliwa"]
[Black "Jan Hein Donner"]
[ECO "A16"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "127"]

1.c4 Nf6 2.Nc3 g6 3.e4 e5 4.g3 Bg7 5.Bg2 O-O 6.Nge2 d6 7.O-O
Nh5 8.d4 Nc6 9.Be3 f5 10.exf5 gxf5 11.dxe5 Nxe5 12.c5 f4
13.Nxf4 Nxf4 14.Bxf4 Rxf4 15.gxf4 Ng6 16.cxd6 c6 17.Kh1 Nxf4
18.Rg1 Be6 19.Be4 Kh8 20.Qf3 Qxd6 21.Rxg7 Kxg7 22.Qg3+ Kh8
23.Ne2 Rf8 24.Qc3+ Kg8 25.Qg3+ Kh8 26.Qc3+ Kg8 27.Rg1+ Kf7
28.Nxf4 Qxf4 29.Rg7+ Ke8 30.Qb4 Bf7 31.f3 Qf6 32.Rg1 Qe7
33.Qa5 Rg8 34.Rxg8+ Bxg8 35.Qxa7 Bd5 36.Qb8+ Kf7 37.Qf4+ Ke8
38.Qb8+ Kf7 39.Qf4+ Kg7 40.Qg3+ Kf7 41.Bxh7 Qe2 42.Bg8+ Kf6
43.Bxd5 cxd5 44.h4 Qd1+ 45.Kg2 d4 46.h5 d3 47.Qd6+ Kf7 48.Qd7+
Kf6 49.Qd6+ Kf7 50.Qg6+ Ke7 51.Qe4+ Kf6 52.Qf4+ Ke6 53.Qe4+
Kf6 54.Qh4+ Kf7 55.Qc4+ Kf6 56.Qf4+ Ke6 57.Qc4+ Kf6 58.Qh4+
Kf7 59.h6 Qe2+ 60.Qf2 Qc2 61.h7 Kg7 62.Kf1 Qc1+ 63.Kg2 Qc2
64.Kf1 1/2-1/2

[Event "The Hague m"]
[Site "The Hague"]
[Date "1958.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Bent Larsen"]
[ECO "E60"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "42"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 c5 6.d5 d6 7.Nc3 Na6
8.O-O Nc7 9.a4 b6 10.Bf4 a6 11.Qd2 Bf5 12.Bh6 b5 13.axb5 axb5
14.cxb5 Ne4 15.Nxe4 Bxe4 16.Bxg7 Kxg7 17.b4 Nxd5 18.bxc5 dxc5
19.Ne5 Bxg2 20.Kxg2 Qd6 21.Nc4 Qe6 1/2-1/2

[Event "The Hague m"]
[Site "The Hague"]
[Date "1958.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1-0"]
[White "Bent Larsen"]
[Black "Jan Hein Donner"]
[ECO "E88"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "75"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.d5 c6
8.Qd2 cxd5 9.cxd5 Ne8 10.g4 f5 11.gxf5 gxf5 12.O-O-O f4 13.Bf2
Nd7 14.Kb1 Ndf6 15.Bh3 Nc7 16.Bh4 Bxh3 17.Nxh3 Qd7 18.Ng5 Nfe8
19.Rhg1 Kh8 20.Qg2 h6 21.Ne6 Nxe6 22.dxe6 Qxe6 23.Nd5 Rf7
24.Rc1 Rc8 25.Rxc8 Qxc8 26.Qg6 Qd7 27.a3 b6 28.Bd8 Kg8 29.Bh4
Kf8 30.Be1 Nf6 31.Bb4 Nxd5 32.exd5 Rf6 33.Qc2 a5 34.Qc6 Qf5+
35.Ka2 Kg8 36.Bxd6 e4 37.Qe8+ Kh7 38.fxe4 1-0

[Event "The Hague m"]
[Site "The Hague"]
[Date "1958.??.??"]
[EventDate "?"]
[Round "3"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Bent Larsen"]
[ECO "E59"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "66"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 d5 6.Nf3 O-O 7.O-O
Nc6 8.a3 Bxc3 9.bxc3 dxc4 10.Bxc4 Qc7 11.Bd3 e5 12.Qc2 Re8
13.e4 c4 14.Bxc4 exd4 15.cxd4 Na5 16.Bd3 Qxc2 17.Bxc2 Nxe4
18.Re1 Bf5 19.Bf4 Nd6 20.Ba4 b5 21.Bxd6 bxa4 22.Re5 Rxe5
23.dxe5 Nb3 24.Re1 Rc8 25.h3 h6 26.Re3 Rc1+ 27.Kh2 Rc4 28.g4
Be4 29.Kg3 Bd5 30.Nh2 Nd4 31.Nf1 Rc1 32.Nd2 Rg1+ 33.Kh4 Ne6
0-1

[Event "The Hague m"]
[Site "The Hague"]
[Date "1958.??.??"]
[EventDate "?"]
[Round "4"]
[Result "1/2-1/2"]
[White "Bent Larsen"]
[Black "Jan Hein Donner"]
[ECO "E94"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "47"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Nf3 e5 7.O-O c6
8.Rb1 exd4 9.Nxd4 Re8 10.Qc2 Na6 11.Be3 Ng4 12.Bxg4 Bxg4
13.Qd2 Nc5 14.f3 Be6 15.b3 Qc7 16.Rfd1 a5 17.Nce2 Rad8 18.a3
Bc8 19.Nf4 Be5 20.b4 axb4 21.axb4 Ne6 22.Ndxe6 Bxe6 23.Nxe6
Rxe6 24.Bd4 1/2-1/2

[Event "Munich ol (Men) fin-B"]
[Site "Munich"]
[Date "1958.09.30"]
[EventDate "?"]
[Round "1"]
[Result "1-0"]
[White "Bent Larsen"]
[Black "Jan Hein Donner"]
[ECO "E13"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "147"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.Bg5 Bb4 6.e3 h6 7.Bh4
Bxc3+ 8.bxc3 d6 9.Bd3 Nbd7 10.O-O g5 11.Bg3 Ne4 12.Nd2 Nxd2
13.Qxd2 f5 14.f4 Qe7 15.Rae1 Nf6 16.d5 O-O-O 17.e4 fxe4
18.fxg5 hxg5 19.Qxg5 exd3 20.Rxe6 Qd7 21.Qxf6 Qa4 22.Qf5 Kb8
23.Qxd3 Qxa2 24.Re2 Qa4 25.Re4 Ba6 26.h3 Rdg8 27.Kh2 Rh5
28.Bh4 Re5 29.Rff4 Rxe4 30.Rxe4 Qa2 31.Bg3 Bc8 32.Re7 Rh8
33.h4 Qa4 34.Qd4 Re8 35.Rg7 Qc2 36.Bxd6 cxd6 37.Qf6 Qa4
38.Qxd6+ Ka8 39.Qc7 Rh8 40.Kg3 Qa6 41.h5 Qb7 42.Qxb7+ Bxb7
43.h6 Bxd5 44.cxd5 Rxh6 45.Kf4 a5 46.Ke5 a4 47.d6 Rh8 48.Re7
Kb8 49.Kd5 a3 50.Kc6 a2 51.Re1 Kc8 52.c4 Kd8 53.Ra1 Rh4 54.c5
Rc4 55.Rxa2 Rxc5+ 56.Kxb6 Rc3 57.Ra7 Rg3 58.Kc6 Rc3+ 59.Kd5
Rg3 60.Ra2 Kd7 61.Ke5 Rg5+ 62.Kf4 Rg8 63.Rd2 Rf8+ 64.Kg3 Rg8+
65.Kf2 Rf8+ 66.Kg1 Rg8 67.Rd3 Rg5 68.g3 Rg6 69.Kg2 Rg8 70.Kf3
Rf8+ 71.Kg4 Rg8+ 72.Kh5 Rh8+ 73.Kg5 Rg8+ 74.Kf6 1-0

[Event "Munich ol (Men) fin-B"]
[Site "Munich"]
[Date "1958.09.30"]
[EventDate "?"]
[Round "8"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Eero Einar Book"]
[ECO "D26"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "124"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O Nc6 7.Nc3
a6 8.Qe2 b5 9.Bb3 b4 10.Nb1 Na5 11.Bc2 Bd7 12.Nbd2 Bb5 13.Bd3
Bxd3 14.Qxd3 cxd4 15.Nc4 Nxc4 16.Qxc4 Qd5 17.Qxd4 Qxd4 18.Nxd4
Bc5 19.Nb3 Be7 20.Bd2 O-O 21.Rfc1 Nd5 22.Rc2 a5 23.e4 Nb6
24.Nd4 Rfc8 25.Nc6 Kf8 26.Rac1 Ke8 27.b3 Bf6 28.Be3 Bc3
29.Nxa5 Rxa5 30.Bxb6 Ra3 31.Bd4 Rca8 32.Bxc3 bxc3 33.Kf1 Rxa2
34.Ke2 R8a3 35.Rxa2 Rxa2+ 36.Ke3 Rb2 37.Rxc3 Kd7 38.e5 f6
39.exf6 gxf6 40.g4 Kd6 41.h4 h6 42.f3 Rh2 43.h5 Ke5 44.Rc5+
Kd6 45.Rc8 Rb2 46.Rb8 Ke5 47.Rb5+ Kd6 48.Kf4 Rb1 49.Rb7 Rb2
50.Rf7 f5 51.gxf5 Rxb3 52.Rf6 Rb4+ 53.Kg3 Ke5 54.Rxe6+ Kxf5
55.Rxh6 Kg5 56.Rh8 Rb3 57.h6 Ra3 58.h7 Kg6 59.Kg4 Kg7 60.Rg8+
Kxh7 61.Rg5 Ra4+ 62.f4 Ra6 1/2-1/2

[Event "13th olm final B"]
[Site "Munich"]
[Date "1958.10.15"]
[EventDate "1958.09.30"]
[Round "5"]
[Result "1/2-1/2"]
[White "Arthur Dunkelblum"]
[Black "Jan Hein Donner"]
[ECO "A04"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "41"]

1.Nf3 Nf6 2.b3 d6 3.d4 g6 4.Bb2 Bg7 5.g3 O-O 6.Bg2 e5 7.dxe5
Nfd7 8.O-O dxe5 9.e4 Na6 10.Qe2 Nac5 11.Rd1 Re8 12.Nc3 c6
13.Ne1 Ne6 14.Qe3 h5 15.Ne2 Qf6 16.h4 Kh7 17.Qf3 Qe7 18.a4 a5
19.Nd3 Nd4 20.Nxd4 exd4 21.Re1 1/2-1/2

[Event "13th olm final B"]
[Site "Munich"]
[Date "1958.10.17"]
[EventDate "1958.09.30"]
[Round "6"]
[Result "1/2-1/2"]
[White "Gideon Stahlberg"]
[Black "Jan Hein Donner"]
[ECO "D84"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "87"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bf4 Bg7 5.e3 O-O 6.cxd5 Nxd5
7.Nxd5 Qxd5 8. Bxc7 Na6 9.Bxa6 Qxg2 10.Qf3 Qxf3 11.Nxf3 bxa6
12.Rg1 Bb7 13.Ke2 f6 14.Rgd1 Rac8 15.Rac1 Bd5 16.b3 Rfe8
17.Nd2 Bf8 18.Kd3 e6 19.Ne4 Kf7 20.Nd6+ Bxd6 21.Bxd6 Bf3
22.Re1 Bc6 23.e4 Red8 24.Bb4 Rd7 25.f3 a5 26.Ba3 Bb5+ 27.Ke3
Rcd8 28.Rc5 a6 29.Bb2 Rb8 30.Rec1 a4 31.b4 Rbd8 32.Rc7 Ke7
33.R1c5 Rxc7 34.Rxc7+ Rd7 35.Rc5 Kd6 36.Bc3 Rb7 37.Be1 Kd7
38.Bg3 Bc6 39.d5 Bb5 40.a3 g5 41.dxe6+ Kxe6 42.Bc7 Kd7 43.Ba5
Ke6 44.Bc7 1/2-1/2

[Event "13th olm final B"]
[Site "Munich"]
[Date "1958.10.18"]
[EventDate "1958.09.30"]
[Round "7"]
[Result "1-0"]
[White "Gedeon Barcza"]
[Black "Jan Hein Donner"]
[ECO "D79"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "73"]

1.Nf3 d5 2.g3 g6 3.Bg2 Bg7 4.d4 Nf6 5.O-O O-O 6.c4 c6 7.cxd5
cxd5 8.Nc3 Ne4 9.Qb3 Nc6 10.Rd1 Na5 11.Qb4 b6 12.Ne5 Bb7
13.Be3 Nxc3 14.Qxc3 Qd6 15. b3 Rfc8 16.Qb2 e6 17.Rac1 Bf8
18.h4 Nc6 19.Nxc6 Rxc6 20.Rxc6 Bxc6 21.Rc1 Rc8 22.Bf4 Qb4
23.Bd2 Qa3 24.Qb1 Qa6 25.Bf3 Ba3 26.Rc2 Bb5 27.Bh6 Rc6
28. Rxc6 Bxc6 29.e4 dxe4 30.Bxe4 Qb7 31.Bxc6 Qxc6 32.b4 b5
33.Qe1 f6 34.d5 Qd6 35.Qe3 Bb2 36.Qxa7 f5 37.dxe6 1-0

[Event "13th olm final B"]
[Site "Munich"]
[Date "1958.10.20"]
[EventDate "1958.09.30"]
[Round "9"]
[Result "0-1"]
[White "Freysteinn Thorbergsson"]
[Black "Jan Hein Donner"]
[ECO "E63"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "95"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 d6 6.O-O Nc6 7.Nc3
a6 8.h3 Rb8 9.e4 Nd7 10.Bg5 h6 11.Be3 Na5 12.b3 b5 13.cxb5
axb5 14.Qd2 Kh7 15.Rac1 c5 16.Rfd1 b4 17.Na4 cxd4 18.Bxd4 Bxd4
19.Nxd4 Nf6 20.Nc2 Nc6 21.f4 Bd7 22.e5 dxe5 23.fxe5 Nxe5
24.Qe3 Qa5 25.Nc5 Rb5 26.Ne1 Be6 27.Qxe5 Rc8 28.Ned3 Nd7
29.Qe3 Nxc5 30.Nxc5 Rbxc5 31.Rxc5 Rxc5 32.Rd2 Rc3 33.Qf2 h5
34.h4 Qe5 35. Kh2 Re3 36.Qf4 Qxf4 37.gxf4 Kg7 38.Bh1 Rh3+
39.Kg1 Rxh4 40.Rd4 Rh3 41.Rxb4 Rc3 42.Ra4 h4 43.b4 Rc1+ 44.Kh2
Rc2+ 45.Kg1 Bxa2 46.b5 Rb2 47.b6 e6 48.f5 0-1

[Event "13th olm final B"]
[Site "Munich"]
[Date "1958.10.21"]
[EventDate "1958.09.30"]
[Round "10"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Moshe Czerniak"]
[ECO "D90"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "83"]

1.c4 Nf6 2.d4 c6 3.Nc3 d5 4.Nf3 g6 5.cxd5 cxd5 6.Bf4 Nc6 7.e3
Bg7 8.Be2 O-O 9.Ne5 Qb6 10.a3 a5 11.O-O Bf5 12.Na4 Qa7 13.Qb3
Nxe5 14.Bxe5 Rac8 15. Nb6 Rc6 16.Nxd5 Nxd5 17.Bxg7 Kxg7
18.Qxd5 Qb6 19.Bf3 f6 20.g4 Bd3 21.Rfd1 Qxb2 22.Qa2 Qxa2
23.Rxa2 Rc3 24.Bxb7 Rb8 25.Bf3 a4 26.Rdd2 Rb1+ 27.Kg2 Bc4
28.Rac2 Rxc2 29.Rxc2 Bb3 30.Rc7 Kf8 31.d5 Ra1 32.Rc8+ Kf7
33.Rc7 Kf8 34. Rc8+ Kf7 35.Rc7 Ke8 36.e4 g5 37.Be2 Rxa3
38.Bb5+ Kf8 39.Rc8+ Kg7 40.Rc7 Kf8 41.Rc8+ Kf7 42.Rc7 1/2-1/2

[Event "13th olm final B"]
[Site "Munich"]
[Date "1958.10.22"]
[EventDate "1958.09.30"]
[Round "11"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Volf Bergraser"]
[ECO "D35"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "229"]

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 Nbd7 6.e3 Bb4
7.Bd3 c5 8.Ne2 h6 9.Bh4 cxd4 10.Nxd4 O-O 11.O-O Bxc3 12.bxc3
Ne5 13.Rb1 b6 14.Be2 Bd7 15. Qb3 Rc8 16.Rbd1 Rc5 17.Qb4 Ra5
18.Qd6 Qb8 19.Qxb8 Rxb8 20.Bxf6 gxf6 21.Rd2 Rc5 22.Rc1 Rbc8
23.Rdc2 Nc4 24.Bxc4 Rxc4 25.Kf1 Ba4 26.Nb3 Bd7 27.Ke1 Bf5
28.Rd2 Rxc3 29.Rxc3 Rxc3 30.Rxd5 Bb1 31.Rd7 Bxa2 32.Nd4 a6
33.Kd2 Ra3 34. Rd6 b5 35.Rxf6 Kg7 36.Rb6 Bb1 37.Kc1 Bd3 38.Kb2
Ra4 39.g4 Bg6 40.h4 Rb4+ 41.Kc3 Rc4+ 42.Kb3 Ra4 43.h5 Bb1
44.Kb2 Be4 45.f3 Bd3 46.Kc3 Bb1 47.Kb2 Bd3 48.Kc3 Bb1 49.Rd6
b4+ 50.Kb2 Bh7 51.Kb3 Ra3+ 52.Kxb4 Rxe3 53.Rxa6 Re7 54.Kc5 Re3
55.Rb6 Re5+ 56.Kc4 Re3 57.Kd5 Bd3 58.Rb3 Kf6 59.Kd6 Kg5 60.Rc3
Kf6 61.Kc7 Kg5 62.Kd8 Kf6 63.f4 Rg3 64.Ke8 Rxg4 65.Rxd3 Rxf4
66.Nf3 Kf5 67.Ra3 Kg4 68.Ne5+ Kxh5 69.Nxf7 Rf6 70.Ke7 Rb6
71.Nd6 Kg4 72.Ra4+ Kg5 73. Ke6 h5 74.Ke5 Rb8 75.Ra1 Kg4
76.Rg1+ Kf3 77.Rh1 Ra8 78.Nf5 Ra5+ 79.Kf6 Ke4 80.Rh4+ Kd3
81.Rxh5 Ra6+ 82.Ke5 Ra5+ 83.Kf4 Ra4+ 84.Kg5 Ra8 85.Rh7 Ra1
86. Rd7+ Ke4 87.Re7+ Kd5 88.Ne3+ Kd6 89.Re4 Ra8 90.Kf4 Ra1
91.Nf5+ Kd5 92.Rd4+ Kc5 93.Rd3 Re1 94.Ne3 Rh1 95.Ke5 Rh5+
96.Nf5 Kc4 97.Rd8 Rh1 98.Ne3+ Kc3 99.Ng2 Rh7 100.Rc8+ Kd2
101.Nf4 Ra7 102.Rc4 Re7+ 103.Kd4 Rd7+ 104.Nd5 Rh7 105.Nf6 Rh4+
106.Ne4+ Ke2 107.Rc3 Rh8 108.Rc2+ Kf3 109.Rf2+ Kg4 110.Nf6+
Kg3 111.Ke3 Ra8 112.Rf3+ Kg2 113.Kf4 Ra7 114.Rb3 Rf7 115.Rb2+
1/2-1/2

[Event "13th olm qual. group 1"]
[Site "Munich"]
[Date "1958.10.03"]
[EventDate "1958.09.30"]
[Round "3"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Andreas Dueckstein"]
[ECO "E11"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "50"]

1.d4 e6 2.Nf3 Nf6 3.c4 Bb4+ 4.Bd2 Qe7 5.g3 Nc6 6.Bg2 Bxd2+
7.Nbxd2 O-O 8. O-O d6 9.e4 e5 10.d5 Nb8 11.b4 a5 12.a3 Bd7
13.Qb3 Na6 14.Qc3 g6 15.c5 axb4 16.axb4 dxc5 17.bxc5 Nxc5
18.Nxe5 Bb5 19.Rfb1 c6 20.Qd4 Rxa1 21.Qxa1 Re8 22.f4 Ba6
23.dxc6 bxc6 24.Qc3 Bb5 25.Rc1 Rd8 1/2-1/2

[Event "13th olm qual. group 1"]
[Site "Munich"]
[Date "1958.10.04"]
[EventDate "1958.09.30"]
[Round "4"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Zdravko Milev"]
[ECO "E64"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "73"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 c5 7.d5 e5
8.dxe6 fxe6 9.Ng5 Nc6 10.O-O Ne5 11.b3 h6 12.Nge4 Nxe4 13.Bxe4
g5 14.Bb2 a6 15.Qd2 Qc7 16.Rad1 Rd8 17.Bb1 b5 18.Qc2 Bb7
19.Qh7+ Kf8 20.f4 Nf3+ 21.exf3 Bd4+ 22. Kg2 Qxh7 23.Bxh7 g4
24.Be4 d5 25.cxd5 exd5 26.Nxd5 gxf3+ 27.Bxf3 Bxd5 28. Bxd4
cxd4 29.Rd3 Bxf3+ 30.Kxf3 Ra7 31.Rfd1 Rad7 32.Rc1 Rd6 33.g4
R8d7 34. f5 Kg7 35.Kf4 Re7 36.Rcd1 Red7 37.Ke5 1-0

[Event "13th olm qual. group 1"]
[Site "Munich"]
[Date "1958.10.05"]
[EventDate "1958.09.30"]
[Round "5"]
[Result "0-1"]
[White "Romani Elio"]
[Black "Jan Hein Donner"]
[ECO "E15"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "84"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Ba6 5.Qc2 d5 6.Nbd2 Nbd7 7.Bg2
Bd6 8.O-O O-O 9.e4 Be7 10.Re1 c6 11.b3 Rc8 12.Bb2 c5 13.e5 Ne8
14.cxd5 exd5 15.Qf5 g6 16.Qf4 Ng7 17.h4 cxd4 18.Bxd4 Nc5
19.Bxc5 bxc5 20.Bh3 Ne6 21.Qh6 Rc6 22.Kg2 Bb7 23.Rh1 g5
24.Bxe6 Rxe6 25.Qh5 h6 26.hxg5 Bxg5 27.Nxg5 Qxg5 28. Qxg5+
hxg5 29.Rh5 d4+ 30.f3 Rxe5 31.Rah1 Kg7 32.Ne4 Rxe4 33.Rh7+ Kf6
34. R1h6+ Ke7 35.fxe4 Bxe4+ 36.Kh3 Bf5+ 37.g4 Bxh7 38.Rxh7 d3
39.Kg3 d2 40.Rh1 Rd8 41.Rd1 f5 42.gxf5 Kf6 0-1

[Event "13th olm qual. group 1"]
[Site "Munich"]
[Date "1958.10.06"]
[EventDate "1958.09.30"]
[Round "6"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Cesar Boutteville"]
[ECO "E42"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "129"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Ne2 b6 6.a3 Bxc3+ 7.Nxc3
Bb7 8.d5 d6 9.e4 O-O 10.Bg5 Re8 11.Be2 h6 12.Be3 exd5 13.exd5
Bc8 14.g4 Nbd7 15.h4 Ne5 16.Rg1 Nfxg4 17.Bxg4 Qxh4 18.Bxc8
Nxc4 19.Qg4 Rxe3+ 20.Kf1 Qxg4 21.Bxg4 Re5 22.f4 Re7 23.Be2
Nd2+ 24.Kf2 Ne4+ 25.Nxe4 Rxe4 26.Rg4 Rae8 27.Bb5 R8e7 28.Rag1
f6 29.f5 R4e5 30.Rf4 Kf8 31.Rd1 Re3 32.Rd2 Rh3 33.Bf1 Rh2+
34.Bg2 Re5 35.Kg3 Rh5 36.Be4 Rg5+ 37.Kf3 Rg1 38.Rg2 Rf1+
39.Ke3 Rd1 40.Rd2 Rg1 41.Kf2 Rc1 42.Bf3 b5 43.Be2 c4 44.Bd1 a6
45.Bc2 Ra1 46.a4 Ra2 47.axb5 axb5 48.Bb1 Ra1 49.Be4 Rc1 50.Ke3
Rg1 51.Kd4 Rg3 52.Bc2 Ke8 53.b3 cxb3 54.Bd3 Kd8 55.Rb2 Re1
56.Rxb3 Rd1 57.Re4 b4 58.Kc4 Rf3 59.Rd4 h5 60.Rxb4 h4 61. Rb7
Rc1+ 62.Kb5 Rf2 63.Rxh4 Rc5+ 64.Ka4 Rc7 65.Rh8+ 1-0

[Event "13th olm qual. group 1"]
[Site "Munich"]
[Date "1958.10.07"]
[EventDate "1958.09.30"]
[Round "7"]
[Result "0-1"]
[White "B Canton"]
[Black "Jan Hein Donner"]
[ECO "E41"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "98"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Nf3 b6 6.Be2 O-O 7.O-O
Bb7 8.a3 Bxc3 9.bxc3 Ne4 10.Qc2 f5 11.Ne1 Nc6 12.f3 Nd6 13.Nd3
Ba6 14.dxc5 bxc5 15.Nxc5 Bxc4 16.Bxc4 Nxc4 17.Rd1 Qe7 18.Nb3
Rab8 19.Nd4 Nxd4 20.exd4 d5 21.Re1 f4 22.Qe2 Rf6 23.Qa2 Qf7
24.Rb1 Rf8 25.a4 Rg6 26.Ba3 Rc8 27.Bc1 Qf5 28.Rb3 Na5 29.Rb5
Rxc3 30.Rb8+ Kf7 31.Ba3 Rf6 32.Rf8+ Kg6 33.Rxf6+ gxf6 34.Rc1
Rxc1+ 35.Bxc1 Qd3 36.Qd2 Qxd2 37.Bxd2 Nc6 38.Bxf4 Nxd4 39.Be3
Nc6 40.Bc5 e5 41.Kf2 f5 42.Ke3 f4+ 43.Kd3 a6 44.Bd6 Kf5 45.Bc5
e4+ 46.fxe4+ dxe4+ 47. Kc4 Ne5+ 48.Kd5 Nd3 49.Bg1 e3 0-1

[Event "13th olm qual. group 1"]
[Site "Munich"]
[Date "1958.10.08"]
[EventDate "1958.09.30"]
[Round "8"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Borge Andersen"]
[ECO "E60"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "73"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 d6 6.O-O Nbd7 7.Qc2
e5 8.Rd1 Re8 9.Nc3 c6 10.e4 a6 11.h3 b5 12.Be3 Bb7 13.dxe5
dxe5 14.cxb5 cxb5 15.a3 Rc8 16.Nd2 Qe7 17.b4 Qe6 18.Qb2 Nb6
19.Bxb6 Qxb6 20.Nb3 Bf8 21.Rac1 Rc7 22.Nd5 Nxd5 23.exd5 Rxc1
24.Rxc1 e4 25.Nc5 Bg7 26.Qd2 f5 27.d6 Bc6 28.d7 Rd8 29. Qa2+
Kh8 30.Qf7 Bxd7 31.Nxd7 Qa7 32.Ne5 Qd4 33.Nc6 Qd2 34.Nxd8
Qxc1+ 35. Bf1 h6 36.Ne6 Qc3 37.Qxg6 1-0

[Event "13th olm qual. group 1"]
[Site "Munich"]
[Date "1958.10.09"]
[EventDate "1958.09.30"]
[Round "9"]
[Result "0-1"]
[White "Francisco Benitez"]
[Black "Jan Hein Donner"]
[ECO "B23"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "62"]

1.e4 c5 2.Nc3 a6 3.g3 b5 4.Bg2 Bb7 5.d3 e6 6.f4 g6 7.Nf3 Bg7
8.O-O d6 9. Ne2 Nd7 10.c3 Qc7 11.Be3 Ngf6 12.h3 O-O 13.Nh4 c4
14.dxc4 bxc4 15.Qc2 Nc5 16.e5 dxe5 17.fxe5 Nd5 18.Bf2 Nd3
19.Nf3 Nxf2 20.Rxf2 Ne3 21.Qd2 Nxg2 22. Kxg2 Rad8 23.Qc2 Qxe5
24.Kh2 Qe3 25.Neg1 e5 26.Re1 Qc5 27.Qe2 e4 28.Nd2 Rd3 29.Nf1
f5 30.Ne3 Bh6 31.Nf1 f4 0-1

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1958.??.??"]
[EventDate "?"]
[Round "9"]
[Result "1-0"]
[White "Herman Pilnik"]
[Black "Jan Hein Donner"]
[ECO "B93"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "114"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 e5
7. Nf3 Qc7 8. Bd3 Be7 9. O-O O-O 10. Qe1 b5 11. Nh4 b4 12. Nd1
d5 13. fxe5 Nxe4 14. Bxe4 dxe4 15. Qxe4 Bb7 16. Qg4 Qxe5
17. Nf5 Bc5+ 18. Kh1 g6 19. Nh6+ Kg7 20. Ne3 Nc6 21. Rf5 Qd4
22. Rxf7+ Rxf7 23. Nhf5+ Kg8 24. Nxd4 Nxd4 25. Bd2 Raf8
26. Bxb4 Rf4 27. Bxc5 Rxg4 28. Nxg4 Rf4 29. h3 Nxc2 30. Rd1
Kg7 31. Rd2 h5 32. Ne5 Be4 33. Kg1 Bf5 34. Nf3 Rc4 35. Bf2 Nb4
36. a3 Nd3 37. Bd4+ Kf7 38. g4 hxg4 39. hxg4 Be4 40. Ng5+ Ke7
41. Nxe4 Rxd4 42. Nf2 Ne5 43. Rxd4 Nf3+ 44. Kg2 Nxd4 45. Kg3
Kf6 46. Kf4 Ne6+ 47. Ke4 Kg5 48. b4 Kh4 49. Ke5 Nc7 50. a4 Kg3
51. Kd6 Ne8+ 52. Kc6 Kxf2 53. b5 axb5 54. axb5 Nf6 55. b6 Nxg4
56. b7 Ne5+ 57. Kc7 g5 1-0

[Event "NED-ch"]
[Site "Amsterdam"]
[Date "1958.??.??"]
[EventDate "?"]
[Round "7"]
[Result "0-1"]
[White "C B Van den Berg"]
[Black "Jan Hein Donner"]
[ECO "A15"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "80"]

1.c4 Nf6 2.g3 c6 3.Nf3 d5 4.b3 g6 5.Bb2 Bg7 6.Bg2 O-O 7.O-O a5
8.Na3 a4 9.d3 Na6 10.Nc2 Re8 11.cxd5 Nxd5 12.Bxg7 Kxg7 13.Qc1
f6 14.Qb2 axb3 15.axb3 Be6 16.b4 Qb6 17.Rab1 Bf7 18.Rfe1 Qd8
19.Nfd4 Nac7 20.Nb3 Nb5 21.Na5 Qc7 22.Nc4 Ra4 23.Ra1 Ndc3
24.Rxa4 Nxa4 25.Qc1 Ra8 26.Qe3 Nac3 27.Ra1 Rxa1+ 28.Nxa1 Nd4
29.Bf1 e5 30.Qd2 Nd5 31.Bg2 b5 32.Na5 c5 33.bxc5 Nc3 34.Nb7
Bd5 35.Bxd5 Nxd5 36.Na5 Qxc5 37.N1b3 Qa3 38.Nxd4 exd4 39.Kg2
Nc3 40.Nc6 Qa8 0-1

[Event "Clare Benedict Cup 05th"]
[Site "Chaumont Neuchatel"]
[Date "1958.05.11"]
[EventDate "?"]
[Round "3"]
[Result "1-0"]
[White "Max Blau"]
[Black "Jan Hein Donner"]
[ECO "B51"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "71"]

1.e4 c5 2.Nf3 d6 3.Bb5+ Nd7 4.c3 Ngf6 5.Qe2 a6 6.Ba4 b5 7.Bc2
e5 8.O-O g6 9.d4 Bg7 10.a4 Rb8 11.axb5 axb5 12.Na3 Qb6 13.dxe5
dxe5 14.b4 c4 15.Be3 Qc6 16.Nd2 Nh5 17.Nab1 O-O 18.Rd1 Re8
19.Nf1 Ndf6 20.f3 Bf8 21.Qf2 Be6 22.Ng3 Ra8 23.Nd2 Nxg3
24.hxg3 Ra6 25.Rxa6 Qxa6 26.Nf1 h5 27.Bb6 Nd7 28.Be3 Qa3
29.Qe1 Ra8 30.Rb1 Be7 31.f4 Nf6 32.Nh2 Bd6 33.Rd1 Qa6 34.Rxd6
Qxd6 35.fxe5 Qxe5 36.Bf4 1-0

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1959.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Erich Eliskases"]
[ECO "D35"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "37"]

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 Be7 6.e3 c6 7.Qc2
Nbd7 8.Bd3 Nh5 9.Bxe7 Qxe7 10.Nge2 Nb6 11.O-O g6 12.Na4 Nxa4
13.Qxa4 O-O 14.b4 a6 15.Rfe1 Ng7 16.Qb3 Bf5 17.Bxf5 Nxf5 18.a4
Nd6 19.Nc3 1/2-1/2

[Event "Zurich (24.05.59)"]
[Site "05"]
[Date "1959.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Paul Keres"]
[ECO "B43"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "48"]

1.d4 e6 2.Nf3 c5 3.e4 cxd4 4.Nxd4 a6 5.Nc3 Qc7 6.g3 Bb4 7.Ne2
h5 8.h3 Nf6 9.Bg2 Nc6 10.Bf4 e5 11.Bg5 d6 12.a3 Bc5 13.Bxf6
gxf6 14.Nd5 Qd8 15.b4 Ba7 16.h4 f5 17.Qd3 fxe4 18.Bxe4 Be6
19.Rd1 Rc8 20.O-O Kf8 21.Ne3 Rg8 22.Nf5 Nd4 23.Nexd4 exd4
24.Qe2 Bxf5 0-1

[Event "Zurich"]
[Site "14"]
[Date "1959.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Mikhail Tal"]
[ECO "A70"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "56"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.e4
Bg7 8.Bd3 O-O 9.O-O a6 10.a4 Bg4 11.h3 Bxf3 12.Qxf3 Nbd7
13.Bf4 Qc7 14.Qe2 Rfe8 15.Bh2 Rac8 16.Bc4 Ne5 17.f4 Nxc4
18.Qxc4 Nd7 19.Rfe1 Qb6 20.Rab1 Qb4 21.Qf1 c4 22.Re2 b5
23.axb5 axb5 24.Kh1 Bxc3 25.bxc3 Qxc3 26.Rxb5 Qd3 27.Qe1 c3
28.Rb1 Nc5 0-1

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1959.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Josef Kupper"]
[ECO "E54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "71"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Nf3 O-O 6.Bd3 d5 7.O-O
dxc4 8.Bxc4 b6 9.a3 cxd4 10.exd4 Bxc3 11.bxc3 Bb7 12.Bg5 Qc7
13.Bd3 Nbd7 14.Rc1 Ng4 15.g3 Qc6 16.Be2 f6 17.Bd2 Rad8 18.c4
Qe4 19.Rc3 Nde5 20.dxe5 Nxe5 21.Re3 Qc6 22.Qc2 Rd4 23.Bc3 Rxc4
24.Qb3 b5 25.Bxe5 fxe5 26.Rb1 Ba8 27.Bxc4 bxc4 28.Qb5 Rxf3
29.Rxf3 Qxb5 30.Rxb5 Bxf3 31.Kf1 Kf7 32.Ra5 Ke8 33.Rxa7 Kd8
34.Ke1 c3 35.Ra5 c2 36.Kd2 1-0

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1959.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Bent Larsen"]
[Black "Jan Hein Donner"]
[ECO "A07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "61"]

1.g3 e5 2.Bg2 d5 3.Nf3 e4 4.Nd4 c5 5.Nb3 c4 6.Nd4 Bc5 7.c3 Nc6
8.Nxc6 bxc6 9.O-O Ne7 10.b3 Ba6 11.Ba3 Qb6 12.bxc4 Bxc4
13.Bxc5 Qxc5 14.d3 exd3 15.exd3 Ba6 16.Re1 O-O 17.d4 Qd6
18.Nd2 c5 19.Qa4 cxd4 20.cxd4 Bc8 21.Rac1 Bd7 22.Qa5 Be6
23.Nb3 Rfb8 24.Qc7 Rd8 25.h4 Kf8 26.Qc3 Bf5 27.Nc5 Rdb8 28.Qf3
Rb4 29.Rxe7 Qxe7 30.Qxf5 Kg8 31.Nb3 1-0

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1959.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Wolfgang Unzicker"]
[ECO "E54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "114"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 c5 7.O-O
dxc4 8.Bxc4 b6 9.Qe2 Bb7 10.dxc5 Bxc3 11.bxc3 bxc5 12.Rd1 Qc7
13.Bd3 Nbd7 14.c4 Rab8 15.Bb2 h6 16.Qc2 Bxf3 17.gxf3 Qb7
18.Bxf6 Nxf6 19.Be2 Qb2 20.Qxb2 Rxb2 21.Bf1 Rfb8 22.Rd6 R2b6
23.Rd2 Kf8 24.Bd3 Ke7 25.Kf1 Rb2 26.Ke2 Nd7 27.f4 g5 28.Bc2
gxf4 29.exf4 Nb6 30.Bb3 Rxd2+ 31.Kxd2 Rd8+ 32.Ke3 Rd4 33.Rc1
Kf6 34.a4 a5 35.h3 Ke7 36.Rc3 f5 37.Rc1 Kf6 38.h4 Kf7 39.h5
Nd7 40.Bd1 Re4+ 41.Kf3 Re1 42.Kg3 Nf6 43.Kg2 Ng4 44.Ra1 Ke7
45.Rc1 Kd6 46.Rb1 Kc7 47.Rc1 e5 48.Rb1 e4 49.Bc2 Re2 50.Bd1
Rxf2+ 51.Kg1 Rxf4 52.Rb5 Kd6 53.Rxa5 e3 54.Ra6+ Ke5 55.a5 Nf2
56.Be2 Nh3+ 57.Kg2 Ng5 0-1

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1959.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Erwin Nievergelt"]
[Black "Jan Hein Donner"]
[ECO "B90"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "76"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bc4 e6 7.O-O
b5 8.Bb3 Bb7 9.Bg5 Nc6 10.a3 h6 11.Bxf6 Qxf6 12.Nxc6 Bxc6
13.f4 g6 14.Qe2 Qd4+ 15.Kh1 O-O-O 16.Rfd1 Qc5 17.a4 Bg7
18.axb5 axb5 19.Na2 Bxb2 20.Rab1 Ba3 21.c3 Kc7 22.Bc2 Rb8
23.Bd3 Rb6 24.Rb3 Ra8 25.Rdb1 Qh5 26.Qxh5 gxh5 27.Nb4 Bxb4
28.Rxb4 Ra3 29.R4b3 Rba6 30.Kg1 Rxb3 31.Rxb3 Ra2 32.h4 Rd2
33.Bxb5 Bxe4 34.Bf1 Ra2 35.Rb5 Ra1 36.Rb2 Bd3 37.Rf2 Kc6 38.g3
Kc5 0-1

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1959.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Dieter Keller"]
[Black "Jan Hein Donner"]
[ECO "B55"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "133"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.f3 e5 6.Bb5+ Nbd7
7.Nf5 d5 8.exd5 a6 9.Ba4 b5 10.Bb3 Nb6 11.Ne3 Bc5 12.Nc3 O-O
13.O-O Bd4 14.Kh1 Bb7 15.Ne4 Nbxd5 16.Nf5 Qb6 17.Qe1 Bc8
18.Nxf6+ Nxf6 19.Ne7+ Kh8 20.Nxc8 Qc7 21.c3 Bc5 22.Bg5 Ng8
23.f4 exf4 24.Bxf4 Qxc8 25.Be5 f6 26.Bf4 Re8 27.Qg3 Ra7
28.Rae1 Rae7 29.Rxe7 Nxe7 30.Bc2 Ng8 31.Qh4 h6 32.Qh5 g5
33.Qg6 Re7 34.Bg3 Qe8 35.Qf5 Ba7 36.Bb3 Bb6 37.Bxg8 Kxg8
38.Qxf6 Re6 39.Qf3 Re2 40.h3 Re6 41.Qd5 Kg7 42.Kh2 Qe7 43.Kh1
Qe8 44.c4 bxc4 45.Qxc4 Bd8 46.Qd4+ Kh7 47.Qd3+ Kg7 48.Bf2 Bf6
49.Bd4 Bxd4 50.Qxd4+ Kg6 51.b4 Qc6 52.Qf2 Qe8 53.a4 Rd6
54.Qf5+ Kg7 55.b5 axb5 56.axb5 Qe7 57.Qf2 Qe6 58.Qb2+ Kh7
59.Ra1 Rd7 60.b6 Qf7 61.Qb5 Rb7 62.Qd3+ Kg7 63.Ra7 Rxa7
64.Qd4+ Kg6 65.bxa7 Qb7 66.Qd6+ Kh5 67.Qb8 1-0

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1959.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Edgar Walther"]
[ECO "E94"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1.d4 Nf6 2.c4 d6 3.Nc3 Nbd7 4.Nf3 g6 5.e4 Bg7 6.Be2 O-O 7.O-O
e5 8.Re1 c6 9.Rb1 a5 10.Bf1 exd4 11.Nxd4 Re8 12.Nc2 Nc5 13.f3
a4 14.Be3 Ne6 15.Qd2 Bf8 16.Red1 Nh5 17.g4 Nhg7 18.f4 f5
19.exf5 gxf5 20.g5 Qe7 21.Re1 Qf7 22.Be2 Nc5 23.Nd4 Bd7 24.Rf1
Ne4 25.Nxe4 Rxe4 26.Bd3 Re7 27.Bf2 c5 28.Ne2 Bc6 29.Ng3 Qg6
30.Qc2 Rf7 31.Rbe1 Bd7 32.h4 Nh5 33.Nxh5 Qxh5 34.Be2 Qg6 35.h5
Qg7 36.h6 Qh8 37.Bh5 Re7 38.Rxe7 Bxe7 39.Re1 Kf8 40.Qe2 Bd8
41.Qe8+ 1-0

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1959.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Fridrik Olafsson"]
[Black "Jan Hein Donner"]
[ECO "E63"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "46"]

1.c4 Nf6 2.Nc3 g6 3.g3 Bg7 4.d4 d6 5.Nf3 Nc6 6.Bg2 O-O 7.O-O
a6 8.Bg5 h6 9.Bd2 e5 10.d5 Ne7 11.e4 Nd7 12.Ne1 f5 13.Nd3 Nf6
14.f3 g5 15.f4 exf4 16.gxf4 fxe4 17.fxg5 exd3 18.gxf6 Rxf6
19.Rxf6 Bxf6 20.Qh5 Bf5 21.Rf1 Bg6 22.Qxh6 Qf8 23.Qf4 Be5
1/2-1/2

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1959.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Max Blau"]
[ECO "D15"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "89"]

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 Qb6 5.Qc2 Bg4 6.c5 Qd8 7.Ne5
Nbd7 8.Nxg4 Nxg4 9.h3 Ngf6 10.Bf4 g6 11.e3 Bg7 12.Be2 O-O
13.O-O Ne8 14.Rad1 Nc7 15.e4 dxe4 16.Bc4 Nf6 17.Nxe4 Nfd5
18.Be5 Qd7 19.Nc3 Rfd8 20.Rfe1 Ne8 21.Bxd5 cxd5 22.b4 e6 23.a4
Rdc8 24.Qb3 b6 25.Bxg7 Kxg7 26.Qa3 Qc7 27.Rc1 Rab8 28.Nb5 Qd7
29.cxb6 axb6 30.Rxc8 Rxc8 31.Rc1 Rc4 32.Rxc4 dxc4 33.Qc3 Qd5
34.f3 Kf8 35.Kf2 Ke7 36.Qe3 h5 37.Qe5 Qxe5 38.dxe5 f6 39.a5
bxa5 40.bxa5 Kd7 41.a6 Kc6 42.a7 Kb7 43.Nd6+ Kxa7 44.Nxe8 fxe5
45.Nd6 1-0

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1959.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Andreas Dueckstein"]
[Black "Jan Hein Donner"]
[ECO "B99"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "64"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4
Nbd7 8.Qf3 Qc7 9.O-O-O Be7 10.Bd3 b5 11.Rhe1 Bb7 12.Kb1 b4
13.Nce2 Nc5 14.Bxf6 Bxf6 15.g4 O-O 16.g5 Be7 17.Qh5 g6 18.Qh4
Nxe4 19.Ng3 d5 20.Re3 Rfd8 21.Nh5 gxh5 22.Rh3 Bc5 23.Qxh5 Bxd4
24.Bxe4 dxe4 25.Rxd4 Qxf4 26.Qxh7+ Kf8 27.b3 Rxd4 28.Qh8+ Ke7
29.Qxd4 Qf1+ 30.Kb2 Qxh3 31.Qxb4+ Ke8 32.Qxb7 Rd8 0-1

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1959.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Gedeon Barcza"]
[ECO "A53"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "91"]

1.d4 Nf6 2.c4 d6 3.Nc3 c6 4.g3 e5 5.Nf3 e4 6.Ng5 d5 7.cxd5
cxd5 8.f4 Nc6 9.Nh3 Bb4 10.Nf2 O-O 11.e3 Bxc3+ 12.bxc3 Na5
13.Be2 Qc7 14.Qc2 Bd7 15.a4 Rfc8 16.Bd2 Nc4 17.Bc1 Qa5 18.O-O
b5 19.Nd1 bxa4 20.Bxc4 Rxc4 21.Bd2 Qc7 22.Nb2 Rb4 23.Rfc1 Rb7
24.c4 dxc4 25.Nxa4 Rab8 26.Ra2 Bxa4 27.Rxa4 Rb2 28.Qxc4 Qd7
29.Ra2 h5 30.Rxb2 Rxb2 31.Rc2 Rxc2 32.Qxc2 Qg4 33.d5 Qd7
34.Bc3 Qxd5 35.Bd4 a5 36.h3 Kh7 37.Kg2 Ne8 38.g4 Nd6 39.Kf2
Nb5 40.Ba1 f6 41.Kg3 Na3 42.Qc7 Nb5 43.Qxa5 Qd3 44.Qe1 Na3
45.Bd4 Nc2 46.Qa5 1/2-1/2

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1959.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Svetozar Gligoric"]
[Black "Jan Hein Donner"]
[ECO "E88"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "91"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.d5 c6
8.Qd2 cxd5 9.cxd5 Nh5 10.O-O-O f5 11.Kb1 a6 12.Nge2 Rf7
13.exf5 gxf5 14.Ng3 Nxg3 15.hxg3 Nd7 16.g4 fxg4 17.fxg4 Nf8
18.Be2 Bf6 19.Ne4 Be7 20.Rh6 Ng6 21.g3 Bd7 22.Rdh1 Rg7 23.g5
Bf5 24.Bd3 Qd7 25.Qc2 Bxe4 26.Bxe4 Rf8 27.Bxg6 hxg6 28.Rxg6
Qf5 29.Rgh6 Qxc2+ 30.Kxc2 Kf7 31.Rf1+ Kg8 32.Rxf8+ Bxf8 33.Kd3
Rh7 34.Rg6+ Kf7 35.Rf6+ Kg7 36.g6 Rh8 37.Rf7+ Kxg6 38.Rxb7 Rh3
39.Bf2 Rh2 40.Be3 Rg2 41.Ke4 Rxg3 42.Rb6 Rg4+ 43.Kd3 Kf5
44.Rxa6 e4 45.Kc4 Rg2 46.Bd4 1/2-1/2

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1959.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Robert James Fischer"]
[ECO "E62"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "88"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 d6 6.O-O Nc6 7.Nc3
e5 8.dxe5 Nxe5 9.Nxe5 dxe5 10.Bg5 Qxd1 11.Raxd1 c6 12.b3 Be6
13.Na4 Nd7 14.Rd6 h6 15.Be3 Rfd8 16.Rc1 Bf8 17.Rdd1 g5 18.Bd2
Ba3 19.Ra1 f6 20.Bc1 Be7 21.Bb2 Kf7 22.Rd2 Nc5 23.Rxd8 Rxd8
24.Nxc5 Bxc5 25.Bc3 Bd4 26.Bxd4 Rxd4 27.Kf1 Rd2 28.Ke1 Rb2
29.Be4 f5 30.Bb1 a5 31.Kd1 a4 32.bxa4 e4 33.Bc2 Bxc4 34.Kc1
Rxa2 35.Rb1 b5 36.Rb4 Ra1+ 37.Kb2 Re1 38.a5 Rxe2 39.Kc1 e3
40.fxe3 Rxe3 41.a6 Re8 42.Bb3 Bxb3 43.Rxb3 Ra8 44.Ra3 Ke6 0-1

[Event "Zuerich"]
[Site "Zuerich"]
[Date "1959.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Edwin Bhend"]
[Black "Jan Hein Donner"]
[ECO "B92"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "91"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nf3
Qc7 8.O-O b5 9.a3 Bb7 10.Re1 Nbd7 11.Nd2 Be7 12.Bf3 O-O 13.Nf1
Rfe8 14.Bg5 h6 15.Bxf6 Nxf6 16.Ne3 Qc5 17.Qd3 Rac8 18.Red1
Red8 19.g3 g6 20.Rac1 h5 21.Ne2 Bf8 22.c4 b4 23.axb4 Qxb4
24.Rc3 Bc6 25.Nc2 Qc5 26.b4 Qb6 27.Ra3 Bb7 28.Nc3 Bh6 29.Be2
Rd7 30.Rb3 Ra8 31.Ra1 Bg7 32.Ra5 Qc6 33.f3 Bf8 34.Ne3 Be7
35.Kg2 Bd8 36.Ra1 Bb6 37.Ned5 Nxd5 38.exd5 Qc8 39.f4 exf4
40.gxf4 Qd8 41.Ne4 f5 42.Ng5 Qf6 43.Rd1 Re8 44.Bf3 Re3 45.Qc2
Rde7 46.c5 1-0

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1959.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Bent Larsen"]
[Black "Jan Hein Donner"]
[ECO "A02"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "146"]

1.f4 c5 2.Nf3 Nc6 3.g3 d5 4.Bg2 e6 5.O-O f5 6.c4 Nf6 7.Ne5 Bd6
8.Nxc6 bxc6 9.Nc3 O-O 10.b3 Qa5 11.Qc2 Bb7 12.Na4 Nd7 13.d3 e5
14.e3 exf4 15.gxf4 Rae8 16.Qd2 Qd8 17.Ba3 Re6 18.Rae1 Qe7
19.cxd5 cxd5 20.Nc3 Nf6 21.Nb5 Bb8 22.d4 Qd7 23.Nc3 cxd4
24.Qxd4 Rc8 25.Rc1 Bc7 26.Na4 Bb6 27.Nxb6 axb6 28.Rxc8+ Qxc8
29.Rc1 Qa8 30.Bb2 Qd8 31.a4 Qe7 32.Re1 Ne4 33.Re2 Rg6 34.Qe5
Qxe5 35.Bxe5 Rc6 36.Bxe4 fxe4 37.Kf2 Ba6 38.Ra2 Bd3 39.a5 bxa5
40.Rxa5 Rc2+ 41.Kg3 Bf1 42.f5 Rg2+ 43.Kh4 Be2 44.Bg3 Kf7
45.Kg5 h6+ 46.Kf4 Bd1 47.b4 Rd2 48.Ke5 d4 49.exd4 e3 50.b5 Rb2
51.Ra7+ Kf8 52.Ke6 Kg8 53.Be5 Rxb5 54.Rxg7+ Kf8 55.f6 Bb3+
56.Kf5 e2 57.Rg1 Kf7 58.Ke4 Bc4 59.Rg7+ Ke8 60.Bg3 Rb1 61.Re7+
Kf8 62.Kf3 Rf1+ 63.Bf2 h5 64.h3 h4 65.Re5 e1=Q 66.Rxe1 Bd5+
67.Ke3 Rxe1+ 68.Bxe1 Be6 69.Bxh4 Bxh3 70.d5 Bg2 71.Kd4 Ke8
72.Kc5 Bf3 73.d6 Bg4 1/2-1/2

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1959.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "C B Van den Berg"]
[ECO "E67"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "103"]

1.c4 Nf6 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 d6 6.d4 Nbd7 7.O-O
e5 8.b3 Re8 9.Qc2 c6 10.Rd1 a6 11.dxe5 dxe5 12.Ng5 Qa5 13.Nge4
Nxe4 14.Nxe4 Nf8 15.Nd6 Rd8 16.Bg5 f6 17.Bd2 Qc7 18.Nxc8 Raxc8
19.Bh3 Ra8 20.e4 Re8 21.Be3 Ne6 22.Bxe6+ Rxe6 23.Qd3 Bf8
24.Qd7 Qxd7 25.Rxd7 Re7 26.Rd3 Kf7 27.Rad1 Ree8 28.Bb6 Rac8
29.g4 Ke6 30.Rd7 Re7 31.R7d6+ Kf7 32.Bd8 Re8 33.Rd7+ Be7
34.Bb6 Rb8 35.Kf1 Ke6 36.Ke2 h5 37.h3 Rh8 38.Ba7 Rbd8 39.Rxb7
Rxd1 40.Kxd1 hxg4 41.hxg4 Rh4 42.Rb6 Kd7 43.Rxa6 Rxg4 44.Be3
Rxe4 45.Ra7+ Ke6 46.a4 f5 47.a5 f4 48.Rxe7+ Kxe7 49.Bc5+ Kd7
50.f3 Rd4+ 51.Bxd4 exd4 52.b4 1-0

[Event "Clare Benedict Cup 06th"]
[Site "Lugano SUI"]
[Date "1959.03.15"]
[EventDate "?"]
[Round "1"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Alberto Mario Giustolisi"]
[ECO "A61"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "85"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.Nd2
Bg7 8.e4 O-O 9.Be2 Na6 10.O-O Nc7 11.a4 Re8 12.Re1 h5 13.h3
Nd7 14.Nc4 Ne5 15.Ne3 Bh6 16.Bf1 Qf6 17.Nc4 Bxc1 18.Rxc1 Nxc4
19.Bxc4 Re5 20.Qd2 g5 21.Rf1 Qg7 22.Kh2 Bd7 23.f4 gxf4 24.Rxf4
Rf8 25.Rcf1 f6 26.Qf2 Bxa4 27.Nxa4 b5 28.Bb3 bxa4 29.Bxa4 a6
30.Bc2 Rg5 31.h4 Re5 32.Bd3 Nb5 33.Qe3 Kf7 34.Ra1 Nc7 35.b4
Rg8 36.Rf2 cxb4 37.Rc2 Ke8 38.Qb6 Qg3+ 39.Kh1 Re7 40.Bf1 Qxh4+
41.Kg1 Qxe4 42.Re2 Nxd5 43.Qc6+ 1-0

[Event "6th Clare Benedict Cup"]
[Site "Lugano, Switzerland"]
[Date "1959.03.17"]
[EventDate "?"]
[Round "3.1"]
[Result "1/2-1/2"]
[White "Wolfgang Unzicker"]
[Black "Jan Hein Donner"]
[ECO "B92"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "32"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nb3
Qc7 8.Bg5 Nbd7 9.a4 b6 10.Bg4 Nxg4 11.Qxg4 Nc5 12.Nd5 Qb7
13.Qf3 Be6 14.c4 Bxd5 15.cxd5 Be7 16.Bxe7 Qxe7 1/2-1/2

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1959.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Kick Langeweg"]
[Black "Jan Hein Donner"]
[ECO "A07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "88"]

1. Nf3 c5 2. g3 Nc6 3. Bg2 g6 4. O-O Bg7 5. c4 Nh6 6. Nc3 O-O
7. d3 Rb8 8. Ne1 a6 9. Ne4 d6 10. Rb1 Bd7 11. Bg5 Nf5 12. g4
Nfd4 13. e3 Ne6 14. Bh4 f5 15. gxf5 gxf5 16. Ng5 Nxg5 17. Bxg5
b5 18. b3 Qe8 19. f4 Nd8 20. Bf3 Bc6 21. Bxc6 Nxc6 22. Qf3 Kh8
23. Qh3 Bf6 24. Nf3 Nb4 25. Rbd1 bxc4 26. bxc4 Nxa2 27. Rf2
Nb4 28. Rg2 e6 29. Kh1 a5 30. Qh4 Qe7 31. Rg3 a4 32. Rh3 Rb7
33. Qh5 Bxg5 34. fxg5 Qg7 35. g6 Rg8 36. Nh4 a3 37. gxh7 Qxh7
38. Qf3 a2 39. Nxf5 exf5 40. Rxh7+ Rxh7 41. Qxf5 Rh6 42. d4
Rhg6 43. Qf2 Ra8 44. dxc5 dxc5 1-0

[Event "Leipzig"]
[Site "Leipzig"]
[Date "1960.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Mikhail Botvinnik"]
[Black "Jan Hein Donner"]
[ECO "D73"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "46"]

1.Nf3 d5 2.g3 g6 3.Bg2 Bg7 4.d4 Nf6 5.c4 c6 6.Na3 O-O 7.O-O
Ne4 8.Bf4 Qb6 9.Qc1 Be6 10.Rd1 Na6 11.Be5 f6 12.Bf4 Bf7 13.c5
Qd8 14.Nd2 Nxd2 15.Qxd2 e5 16.Bh6 Bxh6 17.Qxh6 Qe7 18.Rac1
Rae8 19.Nc2 Be6 20.b4 Nc7 21.a4 a6 22.Na1 Bd7 23.Nb3 Ne6
1/2-1/2

[Event "Beverwijk (Netherlands)"]
[Site "Beverwijk (Netherlands)"]
[Date "1960.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Salomon Flohr"]
[Black "Jan Hein Donner"]
[ECO "A04"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "57"]

1.Nf3 c5 2.c4 Nc6 3.g3 g6 4.Bg2 Bg7 5.O-O a6 6.Nc3 Rb8 7.d3 b5
8.cxb5 axb5 9.Be3 Nd4 10.Rc1 d6 11.Bxd4 cxd4 12.Nd5 e6 13.Nb4
Ne7 14.Qc2 Bh6 15.Nxd4 Bxc1 16.Ndc6 Nxc6 17.Nxc6 Qc7 18.Qc3
O-O 19.Nxb8 Qxc3 20.bxc3 Bd2 21.Rb1 Bb7 22.Nd7 Bxg2 23.Kxg2
Ra8 24.Rxb5 Ra7 25.Nf6+ Kg7 26.Ne8+ Kf8 27.Nxd6 Bxc3 28.Rb8+
Kg7 29.Nb5 1-0

[Event "Leipzig"]
[Site "Leipzig"]
[Date "1960.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Viktor Korchnoi"]
[ECO "E54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "57"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5
7. O-O dxc4 8. Bxc4 a6 9. a3 Ba5 10. Bd3 Nbd7 11. Ne4 Nxe4
12. Bxe4 Nf6 13. Bc2 cxd4 14. exd4 Bd7 15. Bg5 Bb5 16. Bd3
Bxd3 17. Qxd3 Qd5 18. Bxf6 gxf6 19. Rac1 Bb6 20. Rfe1 Kh8
21. Qe3 Rg8 22. Qf4 Rg6 23. Red1 Rd8 24. g3 Kg7 25. Rd2 Qh5
26. Qe4 Rd5 27. Kg2 Rg4 28. Qe2 Qg6 29. Qd1 1/2-1/2

[Event "Madrid zt"]
[Site "02"]
[Date "1960.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Ludek Pachman"]
[ECO "E48"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "111"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 Nbd7 7.O-O
c6 8.a3 Bd6 9.Qc2 dxc4 10.Bxc4 e5 11.Ba2 Qe7 12.h3 Kh8 13.Bd2
h6 14.Ne4 Nxe4 15.Qxe4 Nf6 16.Qh4 e4 17.Ne5 Be6 18.Nc4 Rfe8
19.f4 exf3 20.Rxf3 Bxc4 21.Bxc4 Ne4 22.Qxe7 Rxe7 23.Rd1 f6
24.Bc1 Rae8 25.Bd3 c5 26.Bxe4 Rxe4 27.Kf2 Rc8 28.Ke2 Re7
29.Kd3 b5 30.Rf5 a6 31.Bd2 Kg8 32.Rd5 Re6 33.Rc1 c4 34.Ke2 g6
35.g4 Kf7 36.Kf3 Bb8 37.e4 Rd6 38.Rxd6 Bxd6 39.Bb4 Ke6 40.d5
Ke7 41.Ke3 h5 42.Bxd6+ Kxd6 43.Kd4 hxg4 44.hxg4 Rh8 45.Rf1 Ke7
46.g5 fxg5 47.e5 Rh4+ 48.Kc5 c3 49.bxc3 Rc4+ 50.Kb6 Rxc3 51.d6
Ke6 52.Rd1 Rc8 53.d7 Rd8 54.Kc7 Ke7 55.e6 g4 56.Rg1 1-0

[Event "Beverwijk"]
[Site "It"]
[Date "1960.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Petrosian"]
[ECO "E00"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "83"]

1. d4 e6 2. c4 Bb4+ 3. Bd2 Qe7 4. Nc3 Nf6 5. e3 O-O 6. Bd3 d5
7. cxd5 exd5 8. a3 Bxc3 9. Bxc3 Nc6 10. Ne2 Bg4 11. O-O a6
12. b4 Bh5 13. Qb3 Bg6 14. Bxg6 hxg6 15. a4 b5 16. Rfc1 Qd6
17. Be1 Ng4 18. g3 Ne7 19. f3 Nf6 20. g4 Qd7 21. Bg3 c6
22. Nf4 Nh7 23. Nd3 Ng5 24. Ne5 Qe6 25. Bh4 f6 26. Bxg5 fxe5
27. e4 bxa4 28. Rxa4 exd4 29. Bxe7 Qxe7 30. Rxc6 Kh7 31. Raxa6
Rxa6 32. Rxa6 dxe4 33. fxe4 Qxe4 34. Qh3+ Kg8 35. Qb3+ Rf7
36. Ra7 Qxg4+ 37. Kh1 Qe4+ 38. Kg1 Qe1+ 39. Kg2 Qf1+ 40. Kg3
Qf4+ 41. Kg2 Qd2+ 42. Kg3 1/2-1/2

[Event "Leipzig"]
[Site "Leipzig"]
[Date "1960.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Lajos Portisch"]
[ECO "E55"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "58"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Nf3 d5 6.Bd3 c5 7.O-O
dxc4 8.Bxc4 Nbd7 9.Qe2 b6 10.Rd1 cxd4 11.exd4 Bb7 12.d5 Bxc3
13.dxe6 Bxf3 14.gxf3 fxe6 15.bxc3 Qc7 16.Bxe6+ Kh8 17.f4 Nc5
18.f5 Nfe4 19.Rd4 Nxe6 20.Rxe4 Nc5 21.Bf4 Qd7 22.Rd4 Qxf5
23.Be5 Rae8 24.Re1 Rxe5 25.Qxe5 Qxf2+ 26.Kh1 Qf3+ 27.Kg1 Nd3
28.Rxd3 Qxd3 29.a4 h6 0-1

[Event "Madrid"]
[Site "Madrid"]
[Date "1960.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Lajos Portisch"]
[Black "Jan Hein Donner"]
[ECO "A48"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "80"]

1.d4 Nf6 2.Nf3 g6 3.Bf4 Bg7 4.e3 d6 5.h3 O-O 6.Be2 Nfd7 7.Nc3
e5 8.dxe5 dxe5 9.Bg5 f6 10.Bc4+ Kh8 11.Bh4 Qe7 12.O-O Nb6
13.Bb3 Nc6 14.Qe2 g5 15.Bg3 f5 16.Bh2 Na5 17.Rfd1 Nxb3 18.axb3
Bd7 19.Ra5 c5 20.Nb5 Bxb5 21.Rxb5 Rfd8 22.Rb1 e4 23.Nd2 Nd5
24.Ra5 b6 25.Ra4 Rd7 26.Nf1 Rad8 27.g4 b5 28.Qxb5 fxg4 29.hxg4
Qe6 30.Ng3 Nf6 31.Qxc5 Qxg4 32.Qf5 Rd1+ 33.Rxd1 Qxd1+ 34.Nf1
Ng4 35.Bg3 Rf8 36.Qxe4 Nf6 37.Qd3 Qf3 38.Rxa7 Ne4 39.Qd7 Rg8
40.c3 h5 1-0

[Event "Madrid"]
[Site "Madrid"]
[Date "1960.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Lajos Portisch"]
[ECO "E31"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "93"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5 h6 5.Bh4 c5 6.d5 d6 7.e3
Bxc3+ 8.bxc3 e5 9.f3 Qe7 10.e4 Nbd7 11.Ne2 Nf8 12.Bf2 Ng6
13.Ng3 Nf4 14.Be3 Nh7 15.h4 Nf8 16.Qd2 N8g6 17.h5 Qg5 18.Kf2
Ne7 19.Ne2 f5 20.g3 fxe4 21.gxf4 Qf6 22.fxe4 O-O 23.f5 Bxf5
24.exf5 Nxf5 25.Ke1 Nh4 26.Kd1 Qxf1+ 27.Rxf1 Rxf1+ 28.Kc2 Rxa1
29.Nc1 Nf5 30.Kb2 Rxc1 31.Kxc1 b6 32.Qd3 Rf8 33.Bf2 Rf7 34.Kb2
Kf8 35.Kb3 Kg8 36.Ka4 Kf8 37.Kb5 Ke8 38.a4 Kf8 39.a5 bxa5
40.Kxa5 Ke7 41.Kb5 Kd7 42.Qe4 Ne7 43.Qg4+ Nf5 44.Qe4 Ne7
45.Bxc5 a6 46.Kxa6 Rf4 47.Qe2 1-0

[Event "Madrid"]
[Site "Madrid"]
[Date "1960.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Lajos Portisch"]
[Black "Jan Hein Donner"]
[ECO "E31"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "83"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5 h6 5.Bh4 c5 6.d5 d6 7.e3 exd5
8.cxd5 Nbd7 9.Bd3 Qa5 10.Ne2 Nxd5 11.O-O Bxc3 12.bxc3 Nxc3
13.Nxc3 Qxc3 14.Be2 O-O 15.Qxd6 a6 16.Rfd1 Re8 17.Rac1 Qb2
18.Bc4 Qe5 19.Qg6 Rf8 20.Bg3 Qg5 21.Qe4 Nf6 22.Qe7 Bg4 23.Bf4
Qh4 24.f3 b5 25.Bf1 Rfe8 26.Qxc5 Be6 27.a3 Nd5 28.Bg3 Qg5
29.Bf2 Qf6 30.Qd4 Qxd4 31.Rxd4 Rec8 32.Rxc8+ Rxc8 33.e4 Nc3
34.Rd6 a5 35.Be1 b4 36.axb4 axb4 37.Ba6 Rc5 38.Rb6 b3 39.Bxc3
Rxc3 40.Kf2 Rc2+ 41.Kg3 Rd2 42.Bb7 1/2-1/2

[Event "Leipzig ol (Men) fin-A"]
[Site "Leipzig"]
[Date "1960.10.16"]
[EventDate "?"]
[Round "2"]
[Result "1/2-1/2"]
[White "Miroslav Filip"]
[Black "Jan Hein Donner"]
[ECO "E10"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "37"]

1.d4 Nf6 2.c4 e6 3.Nf3 c5 4.d5 exd5 5.cxd5 g6 6.Nc3 Bg7 7.Bg5
h6 8.Bh4 d6 9.e3 g5 10.Bg3 Nh5 11.Nd2 Nxg3 12.hxg3 O-O 13.Be2
Qe7 14.O-O Nd7 15.Qc2 Ne5 16.a4 Bd7 17.Rfe1 f5 18.Bb5 Bc8
19.Bf1 1/2-1/2

[Event "Leipzig ol (Men) qual-B"]
[Site "Leipzig"]
[Date "1960.??.??"]
[EventDate "?"]
[Round "4"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Bogdan Sliwa"]
[ECO "E07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "56"]

1.c4 Nf6 2.Nf3 e6 3.g3 d5 4.Bg2 Be7 5.O-O O-O 6.d4 Nbd7 7.b3
c6 8.Nc3 b6 9.Bb2 Bb7 10.e3 Rc8 11.Qe2 dxc4 12.bxc4 c5 13.Rac1
Qc7 14.Nb5 Qb8 15.Rfd1 Rfd8 16.d5 exd5 17.Nh4 a6 18.Nc3 dxc4
19.e4 Ne5 20.Nd5 Nxd5 21.exd5 Bf6 22.Bh3 Re8 23.Bxc8 Qxc8
24.Bxe5 Rxe5 25.Qxc4 Qd7 26.a4 Bxd5 27.Nf3 Qf5 28.Qxa6 Bxf3
0-1

[Event "Madrid zt"]
[Site "Madrid"]
[Date "1960.??.??"]
[EventDate "?"]
[Round "15"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Svetozar Gligoric"]
[ECO "D79"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "16"]

1.d4 Nf6 2.c4 g6 3.g3 c6 4.Bg2 d5 5.cxd5 cxd5 6.Nf3 Bg7 7.O-O
O-O 8.Nc3 Nc6 1/2-1/2

[Event "Madrid zt playoff"]
[Site "Madrid"]
[Date "1960.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1/2-1/2"]
[White "Svetozar Gligoric"]
[Black "Jan Hein Donner"]
[ECO "E94"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "36"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O c6
8.d5 c5 9.Bg5 h6 10.Bh4 Qb6 11.Nd2 Bd7 12.Rb1 a5 13.a3 Na6
14.Qc2 Rfb8 15.b3 Qd8 16.Nb5 Qf8 17.Qc3 Ne8 18.f3 f5 1/2-1/2

[Event "Madrid zt playoff"]
[Site "Madrid"]
[Date "1960.??.??"]
[EventDate "?"]
[Round "4"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Svetozar Gligoric"]
[ECO "E70"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "82"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Bg5 h6 6.Bh4 c5 7.d5 e6
8.Bd3 exd5 9.exd5 O-O 10.Nge2 a6 11.O-O Nbd7 12.f4 Re8 13.Qd2
Nf8 14.h3 N8h7 15.Rf3 Bd7 16.Raf1 b5 17.g4 b4 18.Nd1 Ne4
19.Qe1 Bf6 20.Bxf6 Nexf6 21.Qd2 Ne4 22.Qc2 f5 23.gxf5 Bxf5
24.Ng3 Nhf6 25.Nxe4 Nxe4 26.Re3 Nf6 27.Bxf5 gxf5 28.Qxf5 Ra7
29.Rfe1 Rg7+ 30.Kh1 Rf8 31.Rg1 Rxg1+ 32.Kxg1 Kh8 33.Re6 Qd7
34.Qc2 Rg8+ 35.Kh2 Qg7 36.Qf2 Nh5 37.Re4 Ng3 38.Re1 Nf5 39.Rg1
Qf6 40.Rxg8+ Kxg8 41.Kg1 Kf8 1/2-1/2

[Event "Leipzig ol (Men) fin-A"]
[Site "Leipzig"]
[Date "1960.10.16"]
[EventDate "?"]
[Round "10"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Milko Bobotsov"]
[ECO "E52"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "44"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 b6 7.cxd5
exd5 8.O-O Bb7 9.Bd2 a6 10.Ne5 Bd6 11.f4 c5 12.Qf3 Nc6 13.Be1
cxd4 14.Nxc6 Bxc6 15.exd4 Re8 16.Bh4 Be7 17.Rfd1 Ne4 18.Bxe7
Qxe7 19.Bxe4 dxe4 20.Qe3 Bb5 21.Nxb5 axb5 22.d5 Qd6 1/2-1/2

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1960.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Bent Larsen"]
[Black "Jan Hein Donner"]
[ECO "A07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1.g3 e5 2.Bg2 d5 3.Nf3 Bd6 4.O-O Ne7 5.c4 c6 6.d3 O-O 7.Nbd2
Nd7 8.e4 dxe4 9.Nxe4 Bc7 10.b3 Re8 11.Bb2 Nf5 12.Re1 Nf8
13.Qd2 f6 14.Rad1 Ne6 15.b4 a5 16.b5 Bb6 17.bxc6 bxc6 18.Qc1
a4 19.c5 Ba5 20.Bc3 Re7 21.Bxa5 Rxa5 22.Nfd2 Ned4 23.Nc4 Raa7
24.f4 Be6 25.fxe5 fxe5 26.Kh1 Bd5 27.Rf1 Re6 28.Rf2 Rf7
29.Rdf1 Bxc4 30.dxc4 Nh6 31.Rxf7 Nxf7 32.Qd1 Qa5 33.Qh5 Qc7
34.Bh3 Rh6 35.Qg4 Rg6 36.Qd1 Qa7 37.Qb1 Ng5 38.Qb6 Qa8 39.Nxg5
Rxg5 40.Qc7 h6 41.Rb1 1-0

[Event "Madrid zt"]
[Site "Madrid ESP"]
[Date "1960.??.??"]
[EventDate "?"]
[Round "11"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Alberto Mario Giustolisi"]
[ECO "A78"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "149"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.e4
Bg7 8.Be2 O-O 9.O-O Re8 10.Nd2 Na6 11.Re1 Nc7 12.a4 b6 13.Bd3
Ng4 14.h3 Ne5 15.Bf1 Ba6 16.Nb5 Bxb5 17.axb5 Nd7 18.Nf3 Ne5
19.Nxe5 Bxe5 20.Rb1 Qd7 21.Qd3 a6 22.bxa6 b5 23.Bd2 Rxa6
24.Bc3 Qe7 25.Qd2 Ra4 26.Bd3 Qf6 27.Bxe5 Qxe5 28.b3 Ra3 29.Bf1
Qg7 30.f4 f6 31.Re3 g5 32.Rbe1 gxf4 33.Rf3 Qg5 34.Rxf4 Kh8
35.Qf2 Ra2 36.Qf3 Rf8 37.e5 dxe5 38.Rf5 Qg7 39.Rexe5 Rd2
40.Re1 Rd4 41.Qc3 Rxd5 42.Rxd5 Nxd5 43.Qxc5 Nf4 44.Qf5 Qg3
45.Re4 Ng6 46.b4 Nh4 47.Qg4 Qxg4 48.Rxg4 Ng6 49.Bxb5 Rd8
50.Be2 Ne5 51.Re4 Rd2 52.Kf2 Kg7 53.Ke1 Rb2 54.Kd1 Kg6 55.Kc1
Rb3 56.Kc2 Rg3 57.Bf1 Kf5 58.Rh4 Rg7 59.b5 Ke6 60.Kc3 Rc7+
61.Bc4+ Kd6 62.Kb4 Rg7 63.Rd4+ Kc7 64.g4 Rg5 65.Be2 f5 66.h4
Rg8 67.gxf5 Rf8 68.Rf4 Kd6 69.Bc4 h5 70.Rd4+ Kc7 71.Be6 Ng4
72.Rd7+ Kb8 73.Ka5 Ne3 74.Ka6 Nxf5 75.Rb7+ 1-0

[Event "Leipzig ol (Men)"]
[Site "Leipzig GDR"]
[Date "1960.10.28"]
[EventDate "1960.10.17"]
[Round "1"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Aleksandar Matanovic"]
[ECO "E55"]
[WhiteElo "2500"]
[BlackElo "2490"]
[PlyCount "113"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 c5 6.Nf3 d5 7.O-O
dxc4 8.Bxc4 Nbd7 9.Qe2 b6 10.Rd1 cxd4 11.exd4 Bb7 12.d5 exd5
13.Nxd5 Re8 14.Qc2 Nxd5 15.Bxd5 Bxd5 16.Rxd5 Qe7 17.Bg5 Qe6
18.Rad1 Nf6 19.Re5 Qc8 20.Qb3 Rxe5 21. Nxe5 Qe6 22.Qxe6 fxe6
23.Nc6 Bf8 24.Rd8 Rxd8 25.Nxd8 Ne4 26.Be3 Nc5 27. Bxc5 Bxc5
28.Nxe6 Bd6 29.f4 Kf7 30.Ng5+ Kg6 31.g3 Be7 32.Ne4 Kf5 33.Nc3
g5 34.fxg5 Bxg5 35.Kf2 Bc1 36.b3 Bd2 37.Nb5 a6 38.Nd6+ Ke6
39.Nc4 Bc3 40.Ke3 b5 41.Nd2 Kd5 42.Ne4 Be5 43.Kd3 a5 44.h3 h6
45.g4 Bg7 46.h4 Bf8 47.Nc3+ Kc5 48.g5 hxg5 49.hxg5 Kb4 50.Kc2
a4 51.bxa4 bxa4 52.g6 Kc5 53.Nxa4+ Kd5 54.Nb6+ Ke6 55.a4 Bb4
56.Kd3 Ba5 57.Nd5 1-0

[Event "Beverwijk I"]
[Site "?"]
[Date "1960.??.??"]
[EventDate "1960.??.??"]
[Round "1"]
[Result "1/2-1/2"]
[White "Tan Hiong Liong"]
[Black "Jan Hein Donner"]
[ECO "B95"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "42"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6
7. Be2 Be7 8. Qd2 b5 9. Qe3 Bb7 10. Bf3 Qc7 11. O-O-O Nbd7
12. Bxf6 Nxf6 13. e5 dxe5 14. Bxb7 Qxb7 15. Qxe5 b4 16. Nce2
O-O 17. Rd3 Qxg2 18. Rg1 Qd5 19. Rxg7+ Kh8 20. Rxh7+ Kxh7
21. Rh3+ Kg8 1/2-1/2

[Event "Beverwijk I"]
[Site "?"]
[Date "1960.??.??"]
[EventDate "1960.??.??"]
[Round "2"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Hans Bouwmeester"]
[ECO "B06"]
[WhiteElo "2500"]
[BlackElo "2343"]
[PlyCount "67"]

1. d4 g6 2. e4 Bg7 3. f4 d6 4. Nf3 Bg4 5. Be2 Nf6 6. e5 dxe5
7. fxe5 Nd5 8. Ng5 Bxe2 9. Qxe2 h6 10. Nf3 O-O 11. O-O c6
12. c4 Nc7 13. Nc3 Nd7 14. Rd1 g5 15. h4 g4 16. Nh2 h5 17. Nf1
f5 18. Ng3 Qe8 19. e6 Nb6 20. Bf4 Rc8 21. d5 cxd5 22. Nxd5
Ncxd5 23. cxd5 Rc4 24. Be5 Bh6 25. d6 exd6 26. Rxd6 Rc6
27. Rad1 Nc8 28. Rxc6 bxc6 29. Bc3 Ne7 30. Rd7 Nd5 31. Bd4
Be3+ 32. Qxe3 Nxe3 33. Rg7+ Kh8 34. e7 1-0

[Event "Beverwijk I"]
[Site "?"]
[Date "1960.??.??"]
[EventDate "1960.??.??"]
[Round "5"]
[Result "1/2-1/2"]
[White "T Van Scheltinga"]
[Black "Jan Hein Donner"]
[ECO "E41"]
[WhiteElo "2325"]
[BlackElo "2500"]
[PlyCount "107"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 Bxc3+
7. bxc3 d6 8. e4 e5 9. d5 Ne7 10. Nh4 h6 11. f3 Ng6 12. Nf5
Nf4 13. Nxg7+ Kf8 14. Bxf4 exf4 15. Nf5 Bxf5 16. exf5 Nd7
17. O-O Ne5 18. Rf2 Rg8 19. a4 Qg5 20. Bf1 Qxf5 21. Qb1 Qxb1
22. Rxb1 b6 23. Rb5 Ke7 24. Re2 Kf6 25. Kf2 Rge8 26. Ra2 Nd7
27. a5 a6 28. Rbb2 Reb8 29. g3 fxg3+ 30. hxg3 bxa5 31. Rxb8
Rxb8 32. Rxa5 Rb6 33. f4 Ke7 34. Bh3 Nf6 35. Bf5 Rb2+ 36. Ke3
Rb3 37. Rxa6 Rxc3+ 38. Bd3 Rb3 39. Ra7+ Kf8 40. Kd2 Rb2+
41. Ke3 Ng4+ 42. Kf3 Nh2+ 43. Ke4 Rg2 44. Rd7 Rxg3 45. Be2 Rg6
46. f5 Rg2 47. Bh5 Ng4 48. Rxf7+ Kg8 49. f6 Nf2+ 50. Kf3 Rg5
51. Kxf2 Rxh5 52. Rg7+ Kf8 53. Kg3 Rf5 54. Rg6 1/2-1/2

[Event "Beverwijk I"]
[Site "?"]
[Date "1960.??.??"]
[EventDate "1960.??.??"]
[Round "6"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Roman Toran Albero"]
[ECO "A78"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "60"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6
7. Nf3 Bg7 8. Be2 O-O 9. O-O Re8 10. Nd2 Na6 11. Re1 Nc7
12. a4 Rb8 13. Bf1 Bd7 14. h3 b5 15. axb5 Nxb5 16. Nxb5 Bxb5
17. Rxa7 Bxf1 18. Kxf1 Rb4 19. Ra4 Nxd5 20. Nc4 Rxa4 21. Qxa4
Nf6 22. Qc6 Re6 23. Bg5 h6 24. Bxf6 Qxf6 25. Rd1 Qf4 26. f3
Bd4 27. b4 Qh2 28. Rxd4 cxd4 29. b5 Qf4 30. Qd5 Re5 1/2-1/2

[Event "Beverwijk I"]
[Site "?"]
[Date "1960.??.??"]
[EventDate "1960.??.??"]
[Round "7"]
[Result "0-1"]
[White "Johan Teunis Barendregt"]
[Black "Jan Hein Donner"]
[ECO "B51"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "53"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Nd7 4. d4 cxd4 5. Qxd4 Ngf6 6. O-O
e6 7. Bg5 Be7 8. Nc3 O-O 9. Rad1 Qa5 10. Bxd7 Bxd7 11. Bxf6
gxf6 12. e5 fxe5 13. Nxe5 Bc8 14. Nc4 Qc5 15. Nxd6 Qxd4
16. Rxd4 Rd8 17. Rfd1 Bf6 18. Rg4+ Kf8 19. Rc4 b5 20. Rc7 Be7
21. Ndxb5 a6 22. Rxd8+ Bxd8 23. Ra7 Rxa7 24. Nxa7 Bd7 25. a4
Bb6 26. Nab5 axb5 27. Nxb5 0-1

[Event "Beverwijk I"]
[Site "?"]
[Date "1960.??.??"]
[EventDate "1960.??.??"]
[Round "9"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Aleksandar Matanovic"]
[ECO "E59"]
[WhiteElo "2500"]
[BlackElo "2490"]
[PlyCount "73"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5
7. O-O Nc6 8. a3 Bxc3 9. bxc3 dxc4 10. Bxc4 Qc7 11. Bb5 Rd8
12. Re1 a6 13. Bd3 e5 14. Qc2 b5 15. Nxe5 Nxe5 16. dxe5 Qxe5
17. f3 c4 18. Bf1 Nd7 19. e4 Nc5 20. Be3 Nb3 21. Rad1 Bb7
22. Rxd8+ Rxd8 23. Rd1 Rxd1 24. Qxd1 Qe7 25. Kf2 Bc6 26. g3
Qxa3 27. Qd8+ Qf8 28. Qb6 Qa8 29. Bh3 a5 30. Qc7 Qe8 31. Qd6
a4 32. e5 Kh8 33. e6 fxe6 34. Bxe6 a3 35. Bh6 Nc1 36. Qd4 Nd3+
37. Kg1 1-0

[Event "Leipzig ol (Men) fin-A"]
[Site "Leipzig, Germany"]
[Date "1960.??.??"]
[EventDate "?"]
[Round "11"]
[Result "1/2-1/2"]
[White "Wolfgang Unzicker"]
[Black "Jan Hein Donner"]
[ECO "C95"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "57"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3
d6 8.c3 O-O 9.h3 Nb8 10.d4 Nbd7 11.Nbd2 Bb7 12.Bc2 Re8 13.Nf1
Bf8 14.Ng3 g6 15.b3 Bg7 16.d5 Nb6 17.Rb1 c6 18.c4 Qc7 19.Bd3
Nfd7 20.Bd2 bxc4 21.bxc4 a5 22.Qb3 Reb8 23.Qa3 a4 24.Be3 Nc5
25.Bxc5 dxc5 26.d6 Qd8 27.Qxc5 Nd7 28.Qa3 Qa5 29.Red1 1/2-1/2

[Event "Bled (Slovenia)"]
[Site "It"]
[Date "1961.??.??"]
[EventDate "?"]
[Round "6"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Arthur Bisguier"]
[ECO "A12"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "155"]

1.c4 Nf6 2.g3 c6 3.Nf3 d5 4.b3 Bf5 5.Bg2 e6 6.O-O Nbd7 7.Bb2
h6 8.d3 Bc5 9.a3 a6 10.b4 Ba7 11.Nbd2 O-O 12.Qc2 Bh7 13.Bc3 b5
14.cxd5 cxd5 15.Nb3 Nb6 16.Nc5 Nfd7 17.Bd4 Nxc5 18.Bxc5 Qc7
19.Rfc1 Rfc8 20.Qd2 Na4 21.Bxa7 Qxa7 22.Ra2 Qb7 23.Rac2 Nb6
24.Nd4 Rxc2 25.Rxc2 Rc8 26.Qc1 Rxc2 27.Qxc2 Bg6 28.Qc5 Na4
29.Qd6 Qb6 30.Nc6 Kh7 31.Bf3 Nc3 32.Qc5 Na4 33.Qxb6 Nxb6
34.Nb8 f6 35.Nxa6 Be8 36.Nc5 e5 37.Kf1 Kg6 38.Ke1 Kf7 39.e3
Ke7 40.d4 Kd6 41.Be2 Bc6 42.Kd2 Be8 43.Nb3 e4 44.Nc1 f5 45.Na2
Na4 46.Nc3 Nxc3 47.Kxc3 Kc6 48.Kb3 Kb6 49.Bd1 Bf7 50.a4 Be8
51.Ka3 Bf7 52.axb5 Be8 53.g4 fxg4 54.Bxg4 Kxb5 55.Kb3 Bf7
56.Bd7+ Kb6 57.b5 g5 58.Kc3 Kc7 59.Bc6 h5 60.Kd2 h4 61.Ke2 Be6
62.f3 exf3+ 63.Kxf3 Kb6 64.e4 g4+ 65.Kf4 dxe4 66.Kxe4 Bc4
67.Kf4 Be2 68.Bd7 Kc7 69.Bxg4 Bxb5 70.Kg5 Kd6 71.Kxh4 Kd5
72.Kg5 Kxd4 73.h4 Be8 74.Bf5 Ke5 75.Bg6 Bb5 76.h5 Bc4 77.h6
Bg8 78.Bf5 1-0

[Event "Bled"]
[Site "Bled"]
[Date "1961.??.??"]
[EventDate "?"]
[Round "14"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Efim Geller"]
[ECO "A56"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "108"]

1.d4 Nf6 2.c4 c5 3.d5 e5 4.Nc3 d6 5.e4 g6 6.Be2 Bg7 7.Be3 a6
8.h3 O-O 9.Qd2 Qa5 10.Nf3 Bd7 11.O-O b5 12.a3 bxc4 13.Qc2 Ne8
14.Nd2 Qd8 15.Nxc4 a5 16.b4 axb4 17.axb4 Rxa1 18.Rxa1 cxb4
19.Na2 f5 20.f3 fxe4 21.fxe4 Qh4 22.Nxb4 Bxh3 23.gxh3 Qg3+
24.Kh1 Qxh3+ 25.Kg1 Qg3+ 26.Kh1 Bh6 27.Qd3 Qh3+ 28.Kg1 Qg3+
29.Kh1 Nf6 30.Rf1 Qh3+ 31.Kg1 Qg3+ 32.Kh1 Qh4+ 33.Kg2 Nxe4
34.Bxh6 Rf2+ 35.Rxf2 Qxf2+ 36.Kh3 Qf5+ 37.Bg4 Nf2+ 38.Kg2 Nxg4
39.Qxf5 gxf5 40.Bg5 Kf7 41.Kg3 Nd7 42.Nxd6+ Kg6 43.Bd8 Ngf6
44.Nc4 h5 45.Bxf6 Kxf6 46.Nd3 f4 47.Kf3 h4 48.Nf2 Kf5 49.Nd6+
Kg6 50.Ke4 f3 51.Nc4 Nf6+ 52.Kxe5 Nxd5 53.Kxd5 h3 54.Ne5+ Kf5
1/2-1/2

[Event "Beverwijk"]
[Site "8"]
[Date "1961.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Borislav Ivkov"]
[ECO "E60"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "78"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 d6 6.O-O Nbd7 7.Qc2
e5 8.Rd1 Re8 9.h3 c6 10.e4 exd4 11.Nxd4 Nc5 12.Nc3 Qe7 13.f3
a5 14.Nb3 Nfd7 15.Be3 f5 16.Bf4 Ne5 17.Nxc5 dxc5 18.exf5 Bxf5
19.Ne4 Nxf3+ 20.Bxf3 Bxe4 21.Bxe4 Qxe4 22.Rd2 b5 23.Rc1 Bd4+
24.Kh2 Qf3 25.Rg2 a4 26.Rd1 Re6 27.Rd3 Qf1 28.Rd1 Qxc4 29.Qxc4
bxc4 30.Rc1 a3 31.bxa3 c3 32.Rcc2 Rxa3 33.Rge2 Kf7 34.Kg2 Ra4
35.Kf3 Rb4 36.Bc1 Rb1 37.Rxe6 Kxe6 38.Ba3 Kd5 39.Rc1 Rb8 0-1

[Event "Bled"]
[Site "11"]
[Date "1961.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Borislav Ivkov"]
[Black "Jan Hein Donner"]
[ECO "B14"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "78"]

1.e4 c6 2.c4 d5 3.exd5 cxd5 4.d4 Nf6 5.Nc3 e6 6.Nf3 Be7 7.c5
O-O 8.Bd3 b6 9.b4 bxc5 10.bxc5 Ba6 11.Bxa6 Nxa6 12.Qa4 Nb8
13.Bf4 Ne4 14.Rc1 g5 15.Bxb8 Qxb8 16.O-O Bf6 17.Rfe1 Qf4
18.Ne2 Qc7 19.Ng3 Nxg3 20.hxg3 Rfb8 21.Ne5 Rb2 22.g4 Rab8
23.g3 Bxe5 24.Rxe5 h6 25.Re3 R8b4 26.Qa3 a5 27.Rd3 Re2 28.Rb3
Rxd4 29.c6 Rc4 30.Rcb1 Qe5 31.Qe7 Rcc2 32.Rb8+ Kg7 33.Qf8+ Kg6
34.Qg8+ Qg7 35.Qxg7+ Kxg7 36.Rc8 Rxf2 37.Rc1 Rg2+ 38.Kf1 Rcf2+
39.Ke1 Rxa2 0-1

[Event "Bled (03.10.61)"]
[Site "19"]
[Date "1961.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Paul Keres"]
[Black "Jan Hein Donner"]
[ECO "B14"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "45"]

1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 e6 6.Nf3 Be7 7.cxd5
Nxd5 8.Bd3 O-O 9.O-O Nc6 10.Re1 Bd7 11.Nxd5 exd5 12.Ne5 Nxe5
13.Rxe5 Bd6 14.Rxd5 Qc7 15.Rh5 g6 16.Rh4 f5 17.Qb3+ Kh8 18.Bh6
Rf6 19.Bg5 Rff8 20.Bh6 Rf6 21.Bc4 f4 22.Bg5 Rff8 23.Bf7 1-0

[Event "Budapest"]
[Site "Budapest"]
[Date "1961.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Viktor Korchnoi"]
[ECO "E60"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "48"]

1. d4 Nf6 2. c4 g6 3. g3 c5 4. Nf3 cxd4 5. Nxd4 Qa5+ 6. Nc3
Ne4 7. Nb3 Nxc3 8. bxc3 Qxc3+ 9. Bd2 Qf6 10. Bg2 Bg7 11. O-O
Nc6 12. Rb1 O-O 13. c5 b5 14. Bf4 a5 15. Bc7 a4 16. Na5 Rxa5
17. Bxc6 Ra7 18. Bb6 dxc6 19. Bxa7 Bf5 20. Rb4 Qc3 21. Rf4 Qb2
22. Rxf5 gxf5 23. Qd7 Qxa2 24. Qxc6 Qc2 0-1

[Event "Bled"]
[Site "Bled"]
[Date "1961.??.??"]
[EventDate "?"]
[Round "10"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Miguel Najdorf"]
[ECO "E69"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "137"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 d6 6.O-O Nbd7 7.Nc3
e5 8.e4 c6 9.h3 a5 10.Be3 exd4 11.Nxd4 Re8 12.Qc2 Nc5 13.Rad1
Nfd7 14.Rd2 a4 15.Rfd1 Qa5 16.g4 Ne5 17.Nb1 f6 18.f4 Nf7
19.Bf2 Bd7 20.Re2 Re7 21.f5 Rae8 22.Rde1 Ne5 23.Bg3 Qb4 24.Na3
Qb6 25.Rd1 Nf7 26.Kh2 Kh8 27.Nb1 Bc8 28.Rde1 Ne5 29.Rd1 Qb4
30.Na3 Bh6 31.Nf3 gxf5 32.gxf5 Nf7 33.Rde1 Rg8 34.Nb1 Ne5
35.Nxe5 dxe5 36.Rd1 Rxg3 37.Kxg3 Bf4+ 38.Kf2 Qb6 39.Kf1 Rg7
40.Nc3 Bd7 41.Nxa4 Nxa4 42.Qxa4 Bh2 43.Rf2 Bg3 44.Rc2 Qe3
45.Qb3 Qf4+ 46.Qf3 Qg5 47.Rcd2 Be8 48.Rd8 Rg8 49.c5 Bh5
50.Rxg8+ Kxg8 51.Qb3+ Bf7 52.Rd8+ Kg7 53.Rd7 Qc1+ 54.Qd1 Qe3
55.Qd3 Qf4+ 56.Qf3 Qc1+ 57.Rd1 Qc4+ 58.Qe2 Kf8 59.Qxc4 Bxc4+
60.Kg1 Ke7 61.b3 Be2 62.Rd2 Bh5 63.Rd3 Bf4 64.Bf3 Bf7 65.Kf1
Bc1 66.Be2 Ba3 67.Rc3 Kf8 68.Bc4 Bb4 69.Rc2 1-0

[Event "Bled"]
[Site "08"]
[Date "1961.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Ludek Pachman"]
[ECO "E25"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "55"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.f3 d5 7.cxd5
Nxd5 8.dxc5 f5 9.c4 Qh4+ 10.g3 Qxc4 11.e4 Qc3+ 12.Bd2 Qe5
13.Bd3 fxe4 14.fxe4 O-O 15.Rc1 Nf6 16.Nf3 Qh5 17.O-O Nbd7
18.Nd4 Ng4 19.Rxf8+ Nxf8 20.Qe2 e5 21.Nf5 Ne6 22.Qg2 Qe8 23.h3
Nf6 24.Nd6 Qe7 25.Be3 Nd4 26.Nf5 Bxf5 27.exf5 Rd8 28.Bg5
1/2-1/2

[Event "Bled (Slovenia)"]
[Site "It"]
[Date "1961.??.??"]
[EventDate "?"]
[Round "4"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Bruno Parma"]
[ECO "E30"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "60"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5 h6 5.Bh4 c5 6.d5 exd5 7.cxd5
d6 8.e3 O-O 9.Bd3 Nbd7 10.Ne2 Ne5 11.a3 Ba5 12.O-O Ng6 13.Bxg6
fxg6 14.f3 Qe7 15.Bf2 g5 16.h3 h5 17.Qd3 Bd7 18.e4 h4 19.Be3
Nh5 20.Qd2 Bd8 21.b4 b6 22.Rab1 Qe5 23.bxc5 bxc5 24.a4 Nf4
25.Nb5 a6 26.Na3 Bxa4 27.Nc4 Nxe2+ 28.Qxe2 Qe7 29.e5 dxe5
30.Qa2 Bb5 1/2-1/2

[Event "Bled"]
[Site "It"]
[Date "1961.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Petrosian"]
[ECO "B06"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "43"]

1. d4 g6 2. e4 Bg7 3. Nc3 d6 4. f4 c6 5. Nf3 Bg4 6. Be2 d5
7. Be3 dxe4 8. Nxe4 Nd7 9. Ne5 Bxe2 10. Qxe2 Ngf6 11. Ng5 O-O
12. O-O-O Qc8 13. Kb1 Nd5 14. Bd2 Nxe5 15. fxe5 f6 16. exf6
exf6 17. Qe6+ Qxe6 18. Nxe6 Rfe8 19. Nxg7 Kxg7 20. Rhe1 b5
21. c3 f5 22. b3 1/2-1/2

[Event "Bled"]
[Site "09"]
[Date "1961.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Lajos Portisch"]
[Black "Jan Hein Donner"]
[ECO "A15"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "137"]

1.c4 Nf6 2.g3 c6 3.Nf3 d5 4.Bg2 dxc4 5.Na3 b5 6.Ne5 Nd5 7.d3
cxd3 8.Qxd3 e6 9.e4 Qa5+ 10.Bd2 Nb4 11.Qe2 Qc7 12.Nf3 Be7
13.O-O O-O 14.Rfc1 a6 15.Nb1 a5 16.a3 N4a6 17.Nd4 e5 18.Nf5
Nc5 19.Qe3 Ne6 20.f4 Bf6 21.Nc3 Qa7 22.Qf2 Qxf2+ 23.Kxf2 Ra7
24.Rd1 Rd7 25.fxe5 Bxe5 26.Be3 b4 27.axb4 axb4 28.Na4 Re8
29.Rac1 Ba6 30.b3 Bb5 31.Nb6 Rxd1 32.Rxd1 g6 33.Nh6+ Kg7
34.Ng4 Bc3 35.h3 h5 36.Nh2 Na6 37.Nd7 Rd8 38.Bb6 Nac7 39.Bf1
Ra8 40.Bxc7 Nxc7 41.Bxb5 Nxb5 42.Nf3 Rd8 43.Rd3 Nc7 44.Ke2 Ne6
45.Nc5 Re8 46.Na4 Bf6 47.Rd7 Nf8 48.Rb7 Rxe4+ 49.Kd3 Re6
50.Rxb4 Nd7 51.Rc4 Ne5+ 52.Nxe5 Bxe5 53.g4 h4 54.Nc5 Rd6+
55.Ke2 Bf6 56.Ne4 Re6 57.Kf3 g5 58.Nxf6 Rxf6+ 59.Kg2 Rd6
60.Rc5 f6 61.b4 Kf7 62.b5 cxb5 63.Rxb5 Rd2+ 64.Kf1 Ke6 65.Rf5
Rd5 66.Rf3 Ke5 67.Rf5+ Ke4 68.Rxf6 Rd3 69.Rf5 1/2-1/2

[Event "Budapest"]
[Site "04"]
[Date "1961.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Lajos Portisch"]
[ECO "A75"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "84"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3
Bg7 8.Be2 O-O 9.O-O a6 10.a4 Bg4 11.Nd2 Bxe2 12.Qxe2 Nbd7
13.Nc4 Nb6 14.Ne3 Qc7 15.a5 Nbd7 16.Nc4 b5 17.axb6 Nxb6 18.Na5
Rfe8 19.Qc2 Nc8 20.f3 Nd7 21.Bd2 Na7 22.Ra2 Nb5 23.Nxb5 axb5
24.Rfa1 c4 25.Be3 Ne5 26.Qd2 Ra6 27.f4 Nd3 28.Nc6 Rxc6 29.Ra8
Qd7 30.dxc6 Qxc6 31.Rxe8+ Qxe8 32.e5 dxe5 33.fxe5 Bxe5 34.Qa5
Bxb2 35.Qa8 Qxa8 36.Rxa8+ Kg7 37.Kf1 Be5 38.h3 b4 39.Ke2 b3
40.Ra5 b2 41.Rb5 Bc3 42.Bd2 Nc1+ 0-1

[Event "Budapest"]
[Site "Budapest"]
[Date "1961.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Mark Taimanov"]
[ECO "E27"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "64"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 O-O 6.f3 Ne8 7.e4
b6 8.a4 Ba6 9.Ba3 d6 10.f4 Nc6 11.Bd3 Na5 12.Qe2 c5 13.Nf3 Rc8
14.dxc5 Nb3 15.cxd6 Nxa1 16.e5 g6 17.Nd4 Qd7 18.Kd2 Nb3+
19.Nxb3 Qxa4 20.Kc2 Nxd6 21.exd6 Qxa3 22.Ra1 Qxd6 23.Rxa6 Qxf4
24.Rxa7 Ra8 25.Rxa8 Rxa8 26.Qe4 Qf2+ 27.Be2 Ra2+ 28.Kd3 Qe1
29.Qe5 h5 30.c5 Qb1+ 31.Ke3 Qxb3 32.c6 Ra5 0-1

[Event "Bled"]
[Site "12"]
[Date "1961.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Mikhail Tal"]
[ECO "E69"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "112"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 d6 6.O-O Nbd7 7.Nc3
e5 8.e4 c6 9.h3 Qb6 10.dxe5 dxe5 11.a3 Qc5 12.Qe2 Qe7 13.Be3
Nc5 14.Qc2 Nh5 15.b4 Ne6 16.Rad1 f5 17.exf5 gxf5 18.Ne2 f4
19.Bc1 Ng5 20.Nxg5 Qxg5 21.g4 Nf6 22.Nc3 Be6 23.Qe2 Rad8
24.Rfe1 Rxd1 25.Rxd1 h5 26.f3 hxg4 27.hxg4 Nxg4 28.Rd6 Qe7
29.Rxe6 Qxe6 30.fxg4 e4 31.Nxe4 Bd4+ 32.Kf1 f3 33.Bxf3 Qxg4
34.Nf6+ Rxf6 35.Qe8+ Kh7 36.Qe7+ Qg7 37.Qxg7+ Kxg7 38.Ke2 b6
39.Bd2 c5 40.bxc5 bxc5 41.a4 Rb6 42.Bd5 Kf6 43.Kd3 Ke5 44.Be1
Rb3+ 45.Kc2 Ra3 46.a5 Ba1 47.Bf7 Ke4 48.Bg6+ Kd4+ 49.Bf7 Ra2+
50.Kb3 Rb2+ 51.Ka3 Kd3 52.Bg3 Rb4 53.Bd6 Bd4 54.Bd5 Kc2
55.Be4+ Kc3 56.Bd5 Rb3+ 0-1

[Event "Beverwijk"]
[Site "04"]
[Date "1961.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Wolfgang Uhlmann"]
[Black "Jan Hein Donner"]
[ECO "E62"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "87"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nc6 7.d5
Na5 8.Nd2 c5 9.O-O a6 10.Qc2 Rb8 11.b3 b5 12.Bb2 bxc4 13.bxc4
Bh6 14.f4 e5 15.Rab1 exf4 16.gxf4 Nh5 17.Nce4 Rxb2 18.Qxb2 f5
19.Qb6 fxe4 20.e3 Nf6 21.Qxd8 Rxd8 22.Rb8 Re8 23.Rc1 g5
24.fxg5 Bxg5 25.Rc3 Rf8 26.Nxe4 Nxe4 27.Bxe4 Kg7 28.Bg2 Bf6
29.Rc1 Kf7 30.Be4 Rg8+ 31.Bg2 Ke7 32.Kh1 Rf8 33.Ra8 Bb7
34.Rxf8 Kxf8 35.Be4 h5 36.Kg2 Ke7 37.Bf5 Kd8 38.Kf3 Bc8 39.Ke4
h4 40.h3 Be5 41.Bxc8 Kxc8 42.Kd3 Nb7 43.Rf1 Nd8 44.Ke4 1/2-1/2

[Event "Maroczy mem"]
[Site "Budapest"]
[Date "1961.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Miroslav Filip"]
[ECO "A34"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "26"]

1.c4 c5 2.Nc3 g6 3.e3 Bg7 4.g3 Nc6 5.Bg2 e6 6.Nge2 Nge7 7.O-O
O-O 8.d4 cxd4 9.exd4 d5 10.cxd5 exd5 11.Be3 Be6 12.Qd2 Nf5
13.Rad1 Re8 1/2-1/2

[Event "Bled"]
[Site "Bled"]
[Date "1961.09.03"]
[EventDate "?"]
[Round "2"]
[Result "1/2-1/2"]
[White "Svetozar Gligoric"]
[Black "Jan Hein Donner"]
[ECO "B14"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "42"]

1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 e6 6.Nf3 Be7 7.cxd5
Nxd5 8.Bd3 O-O 9.O-O Nc6 10.Re1 Bd7 11.Nxd5 exd5 12.Ne5 Nxe5
13.dxe5 Be6 14.Be3 Qd7 15.Bd4 a6 16.Qh5 g6 17.Qh6 Rac8 18.Rad1
Bc5 19.Qe3 Bxd4 20.Qxd4 Rc7 21.h3 Rfc8 1/2-1/2

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1961.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Bent Larsen"]
[ECO "A56"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "80"]

1.d4 Nf6 2.c4 c5 3.d5 e5 4.Nc3 d6 5.e4 g6 6.Be2 Bg7 7.Be3 h5
8.Nf3 Nbd7 9.h3 Bh6 10.Ng5 Nf8 11.Qd2 Ng8 12.f4 f6 13.Nf3 exf4
14.Bxf4 Bd7 15.h4 Bxf4 16.Qxf4 Qe7 17.O-O-O Nh6 18.Rdf1 O-O-O
19.Nd2 f5 20.Nf3 Ng4 21.Bd3 Re8 22.exf5 gxf5 23.Re1 Ng6 24.Qd2
Qf6 25.g3 N6e5 26.Nxe5 Nxe5 27.Ref1 Reg8 28.Ne2 Rg4 29.Rf4
Rhg8 30.Rhf1 Rxf4 31.Rxf4 a6 32.Qc2 Qh6 33.Bxf5 Rxg3 34.Bxd7+
Nxd7 35.Qe4 Rg6 36.Qe8+ Kc7 37.Kd1 Rg1+ 38.Kc2 Rg2 39.Re4 Qh7
40.Kb3 Rxe2 0-1

[Event "IBM"]
[Site "Amsterdam"]
[Date "1961.??.??"]
[EventDate "?"]
[Round "6"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "F Kuijpers"]
[ECO "E31"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "85"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5 h6 5.Bh4 c5 6.d5 d6 7.e3
Bxc3+ 8.bxc3 e5 9.f3 O-O 10.e4 Nbd7 11.Bd3 Re8 12.Bf2 Nf8
13.Be3 Ng6 14.Qd2 Nh5 15.Kf2 Qh4+ 16.Kf1 Ng3+ 17.hxg3 Qxh1
18.Kf2 Rf8 19.Rf1 Qh2 20.Ne2 Ne7 21.g4 Qh4+ 22.Ng3 Qf6 23.g5
Qg6 24.gxh6 f5 25.exf5 Nxf5 26.Bxf5 Bxf5 27.Rh1 Rf7 28.Rh4 Bb1
29.Qb2 Qc2+ 30.Qxc2 Bxc2 31.hxg7 Rxg7 32.Nh5 Rg6 33.g4 Kf7
34.f4 Bd1 35.Ng3 exf4 36.Bxf4 Bxg4 37.Ne4 Rag8 38.Nxd6+ Kf6
39.Nxb7 Kf5 40.Bc7 Rf8 41.Ke3 Ra6 42.Rh2 Ra3 43.Rf2+ 1-0

[Event "Bled"]
[Site "Bled"]
[Date "1961.09.03"]
[EventDate "?"]
[Round "5"]
[Result "1/2-1/2"]
[White "Klaus V Darga"]
[Black "Jan Hein Donner"]
[ECO "B18"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "46"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.Nf3 Nd7
7.Bd3 e6 8.O-O Ngf6 9.Re1 Be7 10.Bg5 O-O 11.Bxg6 hxg6 12.c4
Re8 13.Qe2 c5 14.Red1 Qc7 15.Rac1 Red8 16.b3 a6 17.Ne4 cxd4
18.Rxd4 Nc5 19.Nxc5 Bxc5 20.Rxd8+ Rxd8 21.Be3 Ba3 22.Rd1 Rxd1+
23.Qxd1 Ng4 1/2-1/2

[Event "Budapest"]
[Site "?"]
[Date "1961.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1-0"]
[White "David Bronstein"]
[Black "Jan Hein Donner"]
[ECO "B12"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "63"]

1. e4 c6 2. d4 d5 3. e5 Bf5 4. h4 h6 5. g4 Bd7 6. Be3 c5 7. c3
Nc6 8. a3 a5 9. b3 e6 10. h5 b5 11. Nf3 Qb8 12. Bg2 c4
13. bxc4 bxc4 14. Qc2 a4 15. Nbd2 Na5 16. O-O Nb3 17. Ra2 Ne7
18. Nh4 Nc6 19. f4 Nxd2 20. Qxd2 Be7 21. Bf2 Na7 22. f5 Bg5
23. Qd1 Qb3 24. Qa1 Rb8 25. Nf3 exf5 26. e6 Bxe6 27. gxf5 Bd7
28. Re2 Kf8 29. Bg3 Rb5 30. Ne5 Bc6 31. Qe1 Kg8 32. Nxc6 1-0

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1961.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "C B Van den Berg"]
[Black "Jan Hein Donner"]
[ECO "C75"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "32"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 Bd7 6.d4 Nf6 7.O-O
Be7 8.Re1 O-O 9.Nbd2 exd4 10.cxd4 Nb4 11.Bxd7 Qxd7 12.Nf1 c5
13.Ne3 cxd4 14.Nxd4 Rfe8 15.Ndf5 Bf8 16.f3 d5 1/2-1/2

[Event "IBM"]
[Site "Amsterdam"]
[Date "1961.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1/2-1/2"]
[White "C B Van den Berg"]
[Black "Jan Hein Donner"]
[ECO "B42"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "51"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 g6 6.O-O Bg7 7.Be3
Ne7 8.f4 Nbc6 9.Nxc6 bxc6 10.Nd2 O-O 11.c3 d6 12.Qc2 Qc7
13.Rad1 c5 14.b4 cxb4 15.cxb4 Nc6 16.a3 Bb7 17.Nb3 Rfc8 18.Qf2
Qe7 19.Bb1 Rd8 20.Rd2 Rac8 21.Rfd1 Nb8 22.Bd4 Bc6 23.Bxg7 Kxg7
24.Qd4+ Kg8 25.Na5 Ba4 26.Rf1 1/2-1/2

[Event "NED-ch20"]
[Site "The Hague"]
[Date "1961.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "C B Van den Berg"]
[Black "Jan Hein Donner"]
[ECO "B42"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "62"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3 Nf6 6.O-O Qc7 7.Qe2
d6 8.Kh1 g6 9.f4 Bg7 10.f5 O-O 11.Bg5 Nc6 12.Nxc6 Qxc6 13.Nd2
exf5 14.exf5 Bxf5 15.Bxf5 Rae8 16.Qd3 gxf5 17.Bxf6 Bxf6
18.Rxf5 Bg7 19.Rh5 h6 20.Rf1 Re6 21.Nc4 Rfe8 22.Rhf5 Re2
23.R5f3 b5 24.Na5 Qxc2 25.Qd5 R8e6 26.Rxf7 Qe4 27.Qxe4 R6xe4
28.Nb7 Rxb2 29.Nxd6 Ree2 30.Rc1 Bf8 31.Rd7 Rbd2 0-1

[Event "Bled"]
[Site "Bled"]
[Date "1961.??.??"]
[EventDate "1961.??.??"]
[Round "3"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Robert James Fischer"]
[ECO "E60"]
[WhiteElo "2500"]
[BlackElo "2785"]
[PlyCount "75"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 c5 6.Nf3 cxd4 7.Nxd4
Nc6 8.Nc2 Ng4 9.Bd2 a6 10.O-O b5 11.h3 Nge5 12.cxb5 axb5 13.b3
d5 14.Nxb5 Ba6 15.a4 Bxb5 16.axb5 Rxa1 17.Nxa1 Na7 18.Bb4 d4
19.f4 Nd7 20.Qd3 Qb6 21.Rc1 Nxb5 22.Rc6 Qb8 23.Nc2 Re8 24.e3
e5 25.Ra6 Nc7 26.Bd6 Nc5 27.Bxc5 e4 28.Bxe4 Nxa6 29.exd4 Nxc5
30.dxc5 Qc8 31.c6 Qxh3 32.b4 Bf8 33.Bg2 Qg4 34.Kf2 Qe6 35.Bd5
Qf6 36.Qd4 Qe7 37.Qc4 h5 38.b5 1/2-1/2

[Event "Bled"]
[Site "Bled"]
[Date "1961.??.??"]
[EventDate "1961.??.??"]
[Round "7"]
[Result "1-0"]
[White "Milan Germek"]
[Black "Jan Hein Donner"]
[ECO "E25"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "79"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3 c5 6.f3 d5 7.cxd5
Nxd5 8.dxc5 Qa5 9.e4 Nxc3 10.Qd2 Nc6 11.Bb2 Na4 12.Qxa5 Nxa5
13.Bxg7 Rg8 14.Bf6 Nxc5 15.Nh3 Bd7 16.Nf4 Rc8 17.Rc1 Ba4
18.Rc3 Kd7 19.Kf2 Rc6 20.Nd3 Rgc8 21.Ne5+ Ke8 22.Nxc6 Rxc6
23.Be2 b5 24.Bd4 Ncb3 25.Rxc6 Nxc6 26.Be3 a5 27.Rb1 Nbd4
28.Bd1 Bxd1 29.Rxd1 e5 30.f4 f6 31.fxe5 fxe5 32.Rc1 b4 33.axb4
axb4 34.Bxd4 Nxd4 35.Ke3 Kd7 36.Kd3 Nb3 37.Rc4 Kd6 38.Rxb4
Nc5+ 39.Ke3 Nd7 40.Ra4 1-0

[Event "Bled"]
[Site "Bled"]
[Date "1961.??.??"]
[EventDate "1961.??.??"]
[Round "15"]
[Result "1-0"]
[White "Aleksandar Matanovic"]
[Black "Jan Hein Donner"]
[ECO "B12"]
[WhiteElo "2500"]
[BlackElo "2500"]
[PlyCount "103"]

1.e4 c6 2.d4 d5 3.e5 Bf5 4.Ne2 e6 5.Ng3 Bg6 6.h4 h6 7.h5 Bh7
8.Bd3 Bxd3 9.cxd3 Nd7 10.Nc3 c5 11.dxc5 Nxe5 12.d4 Nc6 13.b4
Nf6 14.b5 Na5 15.O-O Be7 16.Qd3 O-O 17.Nd1 a6 18.bxa6 Rxa6
19.Rb1 Qd7 20.Nc3 Nc4 21.Bf4 Rfa8 22.Rb3 b6 23.cxb6 Rxb6
24.Rfb1 Qc6 25.Qf3 Rxb3 26.axb3 Na3 27.Rc1 Qb6 28.Nce2 Nb5
29.Qd3 Nd6 30.f3 Nb5 31.Kh2 Bd6 32.Bxd6 Nxd6 33.Rc3 Kf8 34.Qc2
Nb5 35.Rc5 Nd7 36.Rc8+ Rxc8 37.Qxc8+ Ke7 38.Qg8 Nxd4 39.Qxg7
Nxe2 40.Nxe2 Qe3 41.Qb2 Qf2 42.Qa3+ Kf6 43.Ng3 Qe3 44.Qb2+ Qe5
45.Qd2 Qg5 46.Qd4+ Ke7 47.Kh3 f5 48.Qb4+ Kf6 49.Qa5 Kf7 50.Qa7
Ke7 51.Qa3+ Kf6 52.Qa5 1-0

[Event "Bled"]
[Site "Bled"]
[Date "1961.??.??"]
[EventDate "1961.??.??"]
[Round "16"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Mario Bertok"]
[ECO "E65"]
[WhiteElo "2500"]
[BlackElo "2297"]
[PlyCount "136"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 d6 6.O-O c5 7.Nc3
Nc6 8.h3 cxd4 9.Nxd4 Nxd4 10.Qxd4 Be6 11.Bxb7 Nd5 12.Qh4 Nxc3
13.bxc3 Rb8 14.Bg2 Bxc3 15.Bg5 f6 16.Bh6 Bxa1 17.Bxf8 Qxf8
18.Rxa1 Rb4 19.Qd4 Qb8 20.Bd5 Bxd5 21.Qxd5+ Kf8 22.a3 Rb2
23.Qd3 Qb3 24.Qe4 Qb7 25.Qd3 Rb3 26.Qc2 Qb6 27.e3 Rb2 28.Qe4
Qb7 29.Qd4 Rc2 30.Rf1 Qc7 31.Qe4 Rxc4 32.Qa8+ Kg7 33.h4 a5
34.Qe8 h5 35.Rb1 Rc1+ 36.Rxc1 Qxc1+ 37.Kg2 Qc7 38.e4 Qb7
39.Qa4 f5 40.Qd4+ Kf7 41.f3 Qb3 42.a4 Qc2+ 43.Kf1 Qc5 44.Qd3
Kf6 45.Kg2 fxe4 46.Qxe4 Qb4 47.Qxb4 axb4 48.a5 b3 49.a6 b2
50.a7 b1=Q 51.a8=Q Qc2+ 52.Kh3 Qd1 53.Qf8+ Ke6 54.g4 Qf1+
55.Kg3 hxg4 56.Qg8+ Kd7 57.Kxg4 Qg2+ 58.Kf4 Qh3 59.Qh8 Qf5+
60.Kg3 Qe5+ 61.Qxe5 dxe5 62.Kg4 Ke6 63.Kg5 Kf7 64.Kh6 Kf6
65.Kh7 g5 66.h5 Kf7 67.h6 e4 68.f4 g4 0-1

[Event "Bled"]
[Site "Bled"]
[Date "1961.??.??"]
[EventDate "1961.??.??"]
[Round "17"]
[Result "1/2-1/2"]
[White "Petar Trifunovic"]
[Black "Jan Hein Donner"]
[ECO "D56"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "36"]

1.Nf3 d5 2.d4 Nf6 3.c4 e6 4.Nc3 Be7 5.Bg5 O-O 6.e3 h6 7.Bh4
Ne4 8.Bxe7 Qxe7 9.Qc2 Nxc3 10.Qxc3 c6 11.Bd3 dxc4 12.Bxc4 b6
13.O-O Bb7 14.Rac1 Nd7 15.Be2 Rfc8 16.Rc2 c5 17.Qa3 Qd8
18.Rfc1 a5 1/2-1/2

[Event "Bled"]
[Site "Bled"]
[Date "1961.??.??"]
[EventDate "1961.??.??"]
[Round "18"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Mijo Udovcic"]
[ECO "E60"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "99"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 d6 6.O-O c5 7.d5 b5
8.cxb5 a6 9.bxa6 Nxa6 10.Nc3 Nc7 11.Bf4 Ba6 12.Qd2 Rb8 13.Rfe1
Rb4 14.Bh6 Bxh6 15.Qxh6 Ncxd5 16.Ng5 Nxc3 17.bxc3 Rb2 18.h4
Bxe2 19.h5 d5 20.hxg6 hxg6 21.Bh3 Qd6 22.Kg2 d4 23.Rxe2 Rxe2
24.Rh1 Qd5+ 25.Kg1 Re1+ 26.Bf1 Qxh1+ 27.Qxh1 dxc3 28.Qh6 c2
29.Ne6 Rxe6 30.Qd2 c4 31.Qxc2 Rc8 32.Bxc4 Rec6 33.Qxg6+ Kh8
34.Bxf7 Nh7 35.Be6 Rf8 36.f4 Rc1+ 37.Kg2 Rb8 38.g4 Rb2+ 39.Kf3
Rc3+ 40.Ke4 Rb4+ 41.Ke5 Re3+ 42.Kd5 Rb8 43.g5 Rd8+ 44.Kc4 Re1
45.Kb4 Rb1+ 46.Bb3 Rb8+ 47.Kc3 Rc8+ 48.Kd3 Re1 49.Kd2 Rh1
50.Qe6 1-0

[Event "Bled"]
[Site "Bled"]
[Date "1961.09.03"]
[EventDate "?"]
[Round "13"]
[Result "1-0"]
[White "Fridrik Olafsson"]
[Black "Jan Hein Donner"]
[ECO "A22"]
[WhiteElo "2570"]
[BlackElo "2500"]
[PlyCount "59"]

1. c4 e5 2. Nc3 Nf6 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nb6 6. Nf3
Nc6 7. O-O Be7 8. a3 f5 9. d3 Bf6 10. e4 O-O 11. b4 Kh8
12. Bb2 Be6 13. exf5 Bxf5 14. Ne4 Bxe4 15. dxe4 Qxd1 16. Raxd1
Nc4 17. Bc1 Rad8 18. Rfe1 a6 19. Bf1 Nd6 20. Kg2 h6 21. Bb2 g6
22. Rc1 Ra8 23. a4 Rae8 24. b5 axb5 25. axb5 Na7 26. Rxc7
Naxb5 27. Rc5 Na7 28. Nxe5 Kh7 29. Rd1 Nc6 30. Nxg6 1-0

[Event "Maroczy mem"]
[Site "Budapest"]
[Date "1961.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Gyula Kluger"]
[ECO "E60"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "66"]

1.d4 Nf6 2.c4 g6 3.g3 c5 4.Nf3 cxd4 5.Nxd4 Qa5+ 6.Nc3 Ne4
7.Qc2 Nxc3 8.Bd2 Qc5 9.Bxc3 Qxc4 10.Rc1 Rg8 11.e4 Qc5 12.Nb5
Na6 13.Be2 Bh6 14.f4 d6 15.Qd2 Qc6 16.b4 Bh3 17.Kf2 Qd7 18.Bd4
Bg4 19.Bd3 e5 20.Be3 Ke7 21.fxe5 Bxe3+ 22.Qxe3 dxe5 23.Nc3 Nc7
24.Qc5+ Ke8 25.Nd5 Nxd5 26.Bb5 Nb6 27.Qxe5+ Kf8 28.Bxd7 Nxd7
29.Qd4 Re8 30.Rc7 Ne5 31.h3 Bf3 32.Rhc1 Kg7 33.R1c5 Kf6 1-0

[Event "Beverwijk I"]
[Site "?"]
[Date "1961.??.??"]
[EventDate "1961.??.??"]
[Round "1"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Ernst Gruenfeld"]
[ECO "E30"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "66"]

1. c4 Nf6 2. d4 e6 3. Nc3 Bb4 4. Bg5 h6 5. Bh4 Bxc3+ 6. bxc3
Qe7 7. f3 d6 8. e4 e5 9. Bf2 Nc6 10. Ne2 b6 11. Ng3 O-O
12. Bd3 Na5 13. O-O c5 14. dxc5 dxc5 15. Nf5 Bxf5 16. exf5
Rad8 17. Qe2 Rd6 18. Be3 Rfd8 19. Bc2 Qb7 20. f4 Re8 21. fxe5
Rxe5 22. Qf3 Qxf3 23. Rxf3 Re8 24. Bf4 Rdd8 25. Bd3 Nc6
26. Bf1 Re4 27. g3 Ne5 28. Re3 Rxe3 29. Bxe3 Nf3+ 30. Kg2 Nxh2
31. Bf4 Nxf1 32. Rxf1 Re8 33. Kf3 Re4 0-1

[Event "Beverwijk I"]
[Site "?"]
[Date "1961.??.??"]
[EventDate "1961.??.??"]
[Round "2"]
[Result "0-1"]
[White "Johan Teunis Barendregt"]
[Black "Jan Hein Donner"]
[ECO "C69"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "111"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O Bg4 6. h3
Bxf3 7. Qxf3 Ne7 8. Qb3 b6 9. Qc3 Qd6 10. d3 Ng6 11. Be3 c5
12. Nd2 Be7 13. g3 Bf6 14. Qb3 O-O 15. Qd5 Qxd5 16. exd5 Rfd8
17. c4 c6 18. dxc6 Rxd3 19. Ne4 Be7 20. Rfd1 Rdd8 21. b4 f5
22. bxc5 bxc5 23. Nxc5 Rdc8 24. Nb7 Rxc6 25. Na5 Rcc8 26. Rab1
Bf6 27. Bb6 e4 28. c5 Ne5 29. Rd5 g6 30. Rd6 Be7 31. Rd5 Bf6
32. Rd6 Kf7 33. Rbd1 Be7 34. R6d5 Ke6 35. Nb3 Nd3 36. Rd4 Nxc5
37. Nxc5+ Bxc5 38. Rd7 Be7 39. a4 a5 40. Rb7 h5 41. Rdd7 Bf6
42. Rh7 Rc4 43. Ba7 Rd8 44. Rb6+ Rd6 45. Rxd6+ Kxd6 46. Rh6
Rxa4 47. Rxg6 Ke6 48. Bb6 Kf7 49. Rh6 h4 50. gxh4 Be5 51. Bc7
Bxc7 52. Rh7+ Kg6 53. Rxc7 f4 54. Rc5 Ra1+ 55. Kg2 Ra2 56. h5+
0-1

[Event "Beverwijk I"]
[Site "?"]
[Date "1961.??.??"]
[EventDate "1961.??.??"]
[Round "3"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Fridrik Olafsson"]
[ECO "E94"]
[WhiteElo "2500"]
[BlackElo "2434"]
[PlyCount "84"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5
7. O-O c6 8. d5 cxd5 9. cxd5 Nbd7 10. Bg5 h6 11. Bh4 g5
12. Bg3 Nh5 13. Nd2 Nf4 14. Bg4 Nc5 15. Bxc8 Rxc8 16. Nb3 Ncd3
17. Bxf4 Nxb2 18. Bxg5 Nxd1 19. Bxd8 Nxc3 20. Be7 Rfe8
21. Bxd6 Nxe4 22. Bb4 Red8 23. Rfd1 b6 24. f3 Nd6 25. Rac1
Rxc1 26. Nxc1 Nf5 27. Ne2 a5 28. Be1 Nd4 29. Nc3 b5 30. a3 b4
31. axb4 axb4 32. Ne4 Rxd5 33. Kf1 f5 34. Nf2 Rb5 35. Rb1 b3
36. Bc3 Nc2 37. Ke2 Na3 38. Rb2 Nc4 39. Rb1 e4 40. Bxg7 Kxg7
41. g4 b2 42. Nd1 exf3+ 0-1

[Event "Beverwijk I"]
[Site "?"]
[Date "1961.??.??"]
[EventDate "1961.??.??"]
[Round "6"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "T Van Scheltinga"]
[ECO "B42"]
[WhiteElo "2500"]
[BlackElo "2325"]
[PlyCount "84"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 Nc6 6. Nxc6
dxc6 7. Nd2 Qc7 8. Nc4 b5 9. Ne3 Ne7 10. O-O Ng6 11. g3 Ne5
12. Be2 Bb7 13. f4 Rd8 14. Qe1 Nd7 15. Bf3 c5 16. c4 b4 17. b3
Be7 18. Bb2 O-O 19. Qe2 Nb8 20. Rfd1 Nc6 21. Ng4 Rxd1+
22. Rxd1 Rd8 23. e5 Qa5 24. Rxd8+ Nxd8 25. Bxb7 Nxb7 26. Bc1
Nd8 27. Be3 Nc6 28. Nf2 Nd8 29. Qd3 Qc7 30. Ne4 Nb7 31. h4 Kf8
32. h5 Ke8 33. Nf2 g6 34. Qe4 Kd7 35. g4 Qc6 36. Qd3+ Kc7
37. Ne4 Qd7 38. Qe2 Qc6 39. Bf2 a5 40. Kh2 Qd7 41. Kh3 Qd8
42. Qd2 Qxd2 1/2-1/2

[Event "Beverwijk I"]
[Site "?"]
[Date "1961.??.??"]
[EventDate "1961.??.??"]
[Round "7"]
[Result "1-0"]
[White "Erno Gereben"]
[Black "Jan Hein Donner"]
[ECO "A48"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "83"]

1. d4 Nf6 2. Nf3 g6 3. Bg5 Bg7 4. e3 d6 5. Bc4 d5 6. Bb3 c5
7. c3 cxd4 8. exd4 Nc6 9. Nbd2 O-O 10. O-O Bf5 11. Re1 Na5
12. Qe2 Nxb3 13. axb3 h6 14. Bh4 g5 15. Bg3 e6 16. Ne5 a6
17. Nd3 Nh5 18. Be5 Bxd3 19. Qxd3 f6 20. Bg3 Nxg3 21. hxg3 Qd7
22. b4 e5 23. Ra5 e4 24. Qe2 f5 25. Qh5 Rad8 26. f3 Rfe8
27. Nf1 f4 28. gxf4 gxf4 29. fxe4 Rxe4 30. Rxd5 Rxe1 31. Rxd7
Rxd7 32. Kf2 Rde7 33. Nd2 Kh8 34. Nc4 b5 35. Ne5 Bxe5 36. Kxe1
Bxd4+ 37. Kf1 Bg7 38. Qg6 Kg8 39. Qxa6 Re5 40. Qd6 Kf7 41. Kf2
Bf6 42. Kf3 1-0

[Event "Bulgaria"]
[Site "Olympiad, Varna"]
[Date "1962.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Mikhail Botvinnik"]
[Black "Jan Hein Donner"]
[ECO "A00"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "147"]

1.g3 g6 2.Bg2 Bg7 3.c4 Nf6 4.Nc3 d6 5.e3 O-O 6.Nge2 e5 7.b3
Re8 8.O-O c6 9.e4 Be6 10.d4 Qd7 11.d5 cxd5 12.cxd5 Bh3 13.f3
Bxg2 14.Kxg2 Na6 15.Be3 Rec8 16.Rc1 Ne8 17.Qd2 Nc5 18.Rc2 Qd8
19.Rfc1 a6 20.Nd1 Nd7 21.Nb2 Rxc2 22.Qxc2 Bf6 23.h4 Be7 24.a4
h5 25.Ng1 Qb8 26.b4 Bd8 27.Qf2 Bf6 28.Nh3 Qd8 29.Qc2 Be7 30.a5
Bf6 31.Na4 Kg7 32.Qc4 Kh7 33.Rc2 Kg7 34.Ng5 Be7 35.Nh3 Kh7
36.Kf1 Kg7 37.Ke2 Kh7 38.Kd1 Kg7 39.Kc1 Kh7 40.Kb2 Kg8 41.Kb3
Kh7 42.Qc3 Kg8 43.Ka3 Bf8 44.Qc4 Be7 45.Ka2 Kg7 46.Nf2 Kh7
47.Bb6 Nxb6 48.Nxb6 Rb8 49.Nd3 Bf8 50.b5 axb5 51.Qxb5 Nf6
52.Nb2 Kg8 53.Rc3 Be7 54.N2a4 Kg7 55.Kb3 Bf8 56.Kb4 Kg8 57.Kb3
Kg7 58.Qc4 Ne8 59.Rc2 Kg8 60.Qc3 Bh6 61.Kb4 Kh7 62.Nb2 Kg8
63.Kb3 Bf8 64.Nd3 Bh6 65.Nb4 Bf8 66.Nd3 Bh6 67.Nb2 Bf8 68.N2a4
Bh6 69.Ka2 Bf8 70.Ka3 Bg7 71.Nc8 Ra8 72.Nab6 Ra6 73.Kb4 Bh6
74.Qe1 1/2-1/2

[Event "Varna ol final  Rd: 6"]
[Site "Varna ol final  Rd: 6"]
[Date "1962.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Robert James Fischer"]
[Black "Jan Hein Donner"]
[ECO "B19"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "89"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. h4 h6
7. Nf3 Nd7 8. Bd3 Bxd3 9. Qxd3 e6 10. Bf4 Qa5+ 11. Bd2 Qc7
12. c4 Ngf6 13. Bc3 a5 14. O-O Bd6 15. Ne4 Nxe4 16. Qxe4 O-O
17. d5 Rfe8 18. dxc6 bxc6 19. Rad1 Bf8 20. Nd4 Ra6 21. Nf5 Nc5
22. Qe3 Na4 23. Be5 Qa7 24. Nxh6+ gxh6 25. Rd4 f5 26. Rfd1 Nc5
27. Rd8 Qf7 28. Rxe8 Qxe8 29. Bd4 Ne4 30. f3 e5 31. fxe4 exd4
32. Qg3+ Bg7 33. exf5 Qe3+ 34. Qxe3 dxe3 35. Rd8+ Kf7 36. Rd7+
Kf6 37. g4 Bf8 38. Kg2 Bc5 39. Rh7 Ke5 40. Kf3 Kd4 41. Rxh6
Rb6 42. b3 a4 43. Re6 axb3 44. axb3 Kd3 45. g5 0-1

[Event "Varna"]
[Site "Varna"]
[Date "1962.??.??"]
[EventDate "?"]
[Round "11"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Miguel Najdorf"]
[ECO "A56"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1.d4 Nf6 2.c4 c5 3.d5 g6 4.Nc3 Bg7 5.e4 d6 6.Nf3 O-O 7.Be2 e5
8.dxe6 fxe6 9.e5 dxe5 10.Qxd8 Rxd8 11.Nxe5 Nd5 12.cxd5 Bxe5
13.dxe6 Bxe6 14.O-O Nc6 15.Bf3 Bf7 16.Re1 Re8 17.Bxc6 bxc6
18.Be3 Rab8 19.Re2 Bd4 20.Bxd4 cxd4 21.Ne4 Kg7 22.b3 Bd5
23.Ng3 c5 24.Rc1 d3 25.Rd2 c4 26.bxc4 Bxc4 27.f3 Rec8 28.Ne4
Bxa2 29.Rxc8 Rxc8 30.Rxd3 Rc7 31.Ra3 Be6 32.Nd6 Bd7 33.Ne4 Kf8
34.Kf2 Ke7 35.g4 Bb5 36.Nc3 Bc4 37.Ke3 Rd7 38.Ne4 a6 39.f4 Bb5
40.f5 gxf5 41.gxf5 1/2-1/2

[Event "Varna"]
[Site "07"]
[Date "1962.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Lajos Portisch"]
[ECO "D29"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "75"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2
b5 8.Bb3 Bb7 9.Rd1 Nbd7 10.Nc3 Qb8 11.d5 Nxd5 12.Nxd5 Bxd5
13.Bxd5 exd5 14.Rxd5 Be7 15.e4 Qb7 16.Bg5 Nb6 17.Bxe7 Nxd5
18.Bxc5 Nf4 19.Qe3 Ne6 20.Bd6 f6 21.Qb3 Kf7 22.e5 Rhe8 23.Re1
Rad8 24.g3 Qc6 25.Bb4 Qd5 26.Qxd5 Rxd5 27.exf6 gxf6 28.Rc1 Ra8
29.Rc6 Rd1+ 30.Kg2 Rd3 31.Bc3 Ra7 32.a3 Rd5 33.Rb6 Ke7 34.Nd2
f5 35.Nf3 a5 36.Ne5 Nd8 37.Rh6 Ke8 38.f4 1/2-1/2

[Event "Beverwijk"]
[Site "06"]
[Date "1962.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Karl Robatsch"]
[ECO "A76"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "104"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 g6 6.Nf3 d6 7.e4
Bg7 8.Be2 O-O 9.O-O Re8 10.Qc2 Na6 11.Bf4 Nb4 12.Qb1 Qe7
13.Nd2 Nfxd5 14.exd5 Bf5 15.Qd1 Bxc3 16.bxc3 Nxd5 17.Bb5 Nxf4
18.Bxe8 Rxe8 19.Re1 Nh3+ 20.gxh3 Qg5+ 21.Kh1 Rxe1+ 22.Qxe1
Bxh3 23.Qe4 Qxd2 24.Qf3 Bf5 25.Kg1 d5 26.Rd1 Qg5+ 27.Qg3 Qe7
28.Qe3 Qxe3 29.fxe3 Be4 30.Rd2 b5 31.Rb2 Bd3 32.a4 bxa4
33.Rb8+ Kg7 34.Rc8 a6 35.Rxc5 Bc4 36.e4 a3 37.Ra5 dxe4 38.Kf2
a2 39.Ke3 f5 40.Kd4 Bb3 41.c4 e3 42.Kxe3 Bxc4 43.Kd4 Bg8
44.Rxa6 Kh6 45.Ke5 Kg5 46.Ra3 f4 47.Ke4 Be6 48.h3 Bg8 49.Ra5+
Kh4 50.Kxf4 Kxh3 51.Kg5 Kg3 52.Kh6 Kf2 0-1

[Event "Bulgaria"]
[Site "ol Varna"]
[Date "1962.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Wolfgang Uhlmann"]
[Black "Jan Hein Donner"]
[ECO "E79"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "60"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.f4 c5 7.Nf3
cxd4 8.Nxd4 Nc6 9.Be3 Qb6 10.Nc2 Qa5 11.O-O Nd7 12.Bd2 Qd8
13.Bf3 Nc5 14.Rb1 f5 15.Qe2 Kh8 16.Kh1 e5 17.b4 Ne6 18.fxe5
dxe5 19.Nd5 Ned4 20.Nxd4 Nxd4 21.Qd3 b5 22.Bc3 Nxf3 23.Qxf3
fxe4 24.Qg3 Bb7 25.Bxe5 Rxf1+ 26.Rxf1 Qd7 27.Nc7 Rd8 28.Nxb5
Qe7 29.Bxg7+ Kxg7 30.c5 Rd3 1/2-1/2

[Event "Varna"]
[Site "ol"]
[Date "1962.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Witold Balcerowski"]
[ECO "A44"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "31"]

1. d4 c5 2. d5 e5 3. e4 d6 4. Nc3 Ne7 5. Nf3 Bg4 6. h3 Bxf3
7. Qxf3 a6 8. a4 Ng6 9. g3 Be7 10. h4 O-O 11. Bd2 b6 12. Nd1
Nd7 13. Ne3 Nf6 14. h5 Nh8 15. Nf5 Ra7 16. h6 1-0

[Event "Varna ol (Men)"]
[Site "Varna"]
[Date "1962.09.16"]
[EventDate "?"]
[Round "4"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Georgi P Tringov"]
[ECO "E62"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "96"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nc6 7.O-O
e5 8.h3 Bd7 9.Be3 Qe7 10.Qd2 Rfe8 11.Rfe1 Bf5 12.Nd5 Qd7
13.Nxf6+ Bxf6 14.d5 Nd8 15.g4 Be4 16.Bf1 Bxf3 17.exf3 Bg7
18.Bd3 f5 19.gxf5 gxf5 20.f4 Kh8 21.Kh2 Nf7 22.Qc2 e4 23.Be2
Qe7 24.Qd2 Rg8 25.Rg1 Bf6 26.Rg3 c5 27.dxc6 bxc6 28.Rag1 Rxg3
29.Rxg3 Rg8 30.Rxg8+ Kxg8 31.b4 Qd7 32.Bd4 Bxd4 33.Qxd4 d5
34.c5 Qe6 35.a4 Qh6 36.Qd2 d4 37.Qxd4 Qxf4+ 38.Kg2 Qg5+ 39.Kf1
Qc1+ 40.Kg2 Qg5+ 41.Kf1 Qc1+ 42.Bd1 Ne5 43.Ke2 Qf4 44.Qe3 Nd3
45.Qxf4 Nxf4+ 46.Kd2 Kf8 47.b5 cxb5 48.axb5 Ke7 1/2-1/2

[Event "Varna ol (Men)"]
[Site "Varna"]
[Date "1962.09.16"]
[EventDate "?"]
[Round "9"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Svetozar Gligoric"]
[ECO "E65"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "30"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 c5 7.O-O
Nc6 8.dxc5 dxc5 9.Be3 Be6 10.Ng5 Qxd1 11.Rfxd1 Bxc4 12.Bxc5 h6
13.Nf3 Rac8 14.Nd4 Nxd4 15.Bxd4 b6 1/2-1/2

[Event "Varna ol (Men)"]
[Site "Varna"]
[Date "1962.09.16"]
[EventDate "?"]
[Round "5"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Klaus V Darga"]
[ECO "E55"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "76"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 d5 6.Nf3 O-O 7.O-O
dxc4 8.Bxc4 Nbd7 9.Qe2 a6 10.a4 cxd4 11.exd4 Nb6 12.Bb3 Bd7
13.Bg5 Bc6 14.Ne5 Be7 15.Rfd1 Nbd5 16.Rd3 g6 17.Re1 Nh5
18.Bxe7 Qxe7 19.Nxd5 Bxd5 20.Bxd5 exd5 21.Qd2 Rfe8 22.Rde3 Qc7
23.Rc1 Qd6 24.Rb3 Re7 25.a5 Rc7 26.Rb6 Rac8 27.Re1 Qd8 28.g3
Nf6 29.Qb4 Ne4 30.Rxb7 Rc2 31.Rxf7 Rb8 32.Qa3 Rbxb2 33.Rxe4
dxe4 34.Qe3 Rc7 35.Rxc7 Qxc7 36.Qxe4 Qb7 37.d5 Rb4 38.Nc4 Qc8
0-1

[Event "IBM"]
[Site "Amsterdam"]
[Date "1962.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1/2-1/2"]
[White "C B Van den Berg"]
[Black "Jan Hein Donner"]
[ECO "C96"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "62"]

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 Nd7 12.Nbd2 cxd4 13.cxd4
Bf6 14.Nf1 Nc6 15.Be3 exd4 16.Nxd4 Nde5 17.Rc1 Bb7 18.b3 g6
19.Bb1 Rc8 20.Qd2 Re8 21.Rcd1 Nxd4 22.Bxd4 Qc7 23.Ne3 h5
24.Kh1 Nd7 25.f3 Bh4 26.Rf1 Nf8 27.Bb2 Qb6 28.Nd5 Bxd5 29.Qxd5
Rcd8 30.f4 Qc5 31.Qb7 Re7 1/2-1/2

[Event "Varna ol (Men)"]
[Site "Varna"]
[Date "1962.09.28"]
[EventDate "1962.??.??"]
[Round "2"]
[Result "0-1"]
[White "Andreas Dueckstein"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "157"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Be2 c5 7.dxc5
Qa5 8.O-O Qxc5+ 9.Kh1 Nc6 10.Qe1 Bg4 11.Bd3 Rfc8 12.Be3 Qh5
13.Ne2 Bxf3 14.Rxf3 Ng4 15.Bg1 Bxb2 16.Rb1 Bg7 17.Rb5 Nge5
18.fxe5 Nxe5 19.Qb1 a6 20.Rd5 e6 21.Ra5 b5 22.Rh3 Qg4 23.Rg3
Qh5 24.Nd4 Nc4 25.Bxc4 Rxc4 26.c3 Qh4 27.Ra3 Qd8 28. Rb3 Rac8
29.Ne2 Qa5 30.Rb4 Rxb4 31.cxb4 Qc7 32.Rb3 Qc2 33.Qxc2 Rxc2
34.Nf4 Rxa2 35.g3 Kf8 36.Bb6 Ke7 37.Nd3 Kd7 38.Kg1 Kc6 39.Be3
Re2 40.Nf2 Ra2 41. Kg2 d5 42.Kf3 f5 43.exf5 gxf5 44.g4 fxg4+
45.Nxg4 d4 46.Bg5 Kd5 47.Nf2 Bf8 48.Rb1 e5 49.Ng4 e4+ 50.Kf4
Bd6+ 51.Kf5 e3 52.Bf4 Bxf4 53.Kxf4 h5 54.Nf6+ Kc4 55.Ke4 e2
56.Rc1+ Kxb4 57.Kd3 Ka3 58.Ne4 b4 59.Kxd4 b3 60.Nc3 Rd2+
61. Kc4 b2 62.Nb1+ Ka4 63.Nc3+ Ka5 64.Re1 Rc2 65.Kb3 Rc1
66.Rxe2 Rxc3+ 67.Kxb2 Rh3 68.Kc1 Kb4 69.Re4+ Kb3 70.Re5 h4
71.Re2 a5 72.Rb2+ Ka3 73.Rf2 a4 74. Kb1 Rb3+ 75.Kc1 Rc3+
76.Kb1 Re3 77.Kc1 Kb3 78.Rb2+ Kc3 79.Rc2+ 0-1

[Event "IBM"]
[Site "Amsterdam NED"]
[Date "1962.??.??"]
[EventDate "?"]
[Round "6"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Moshe Czerniak"]
[ECO "D35"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "73"]

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.cxd5 exd5 5.Bg5 Be7 6.e3 O-O 7.Bd3
c6 8.Qc2 Nbd7 9.Nf3 Re8 10.O-O Nf8 11.Rab1 Ne4 12.Bxe7 Qxe7
13.b4 Bf5 14.b5 Qd6 15.bxc6 bxc6 16.Ne5 Nxc3 17.Qxc3 Bxd3
18.Nxd3 Re6 19.Qb4 Qd8 20.Rfc1 Rh6 21.Qb7 Rc8 22.Qxa7 Ra8
23.Qb7 Rxa2 24.Rxc6 Rxc6 25.Qxc6 Qa5 26.h4 Qd2 27.Qxd5 g6
28.Rb7 Ra1+ 29.Kh2 Qa2 30.Qxa2 Rxa2 31.Kg3 f6 32.Nc5 h5 33.d5
f5 34.d6 Ra8 35.Re7 Nh7 36.Ne6 Nf6 37.d7 1-0

[Event "Beverwijk"]
[Site "?"]
[Date "1962.??.??"]
[EventDate "?"]
[Round "3"]
[Result "1-0"]
[White "Petar Trifunovic"]
[Black "Jan Hein Donner"]
[ECO "D56"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "85"]

1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Bg5 Be7 5. Nc3 O-O 6. e3 h6
7. Bh4 Ne4 8. Bxe7 Qxe7 9. Qc2 Nxc3 10. Qxc3 c6 11. Rc1 b6
12. cxd5 exd5 13. Bd3 Be6 14. O-O Rc8 15. Rc2 a5 16. Ne5 Ra7
17. Rfc1 Rac7 18. a3 c5 19. dxc5 Rxc5 20. Qd2 Qd6 21. Nf3 Rxc2
22. Rxc2 Rxc2 23. Qxc2 Nc6 24. Bb5 Ne5 25. Nd4 Bd7 26. Be2 Nc6
27. Nxc6 Bxc6 28. Bf3 Bd7 29. Qd2 Be6 30. h3 Qc5 31. b4 axb4
32. axb4 Qc6 33. Kh2 Qd6 34. g3 Qe5 35. Bg2 g5 36. f4 gxf4
37. gxf4 Qh5 38. Qd4 b5 39. Qd3 d4 40. Qxd4 Qe2 41. e4 h5
42. f5 Bc4 43. Qd8 1-0

[Event "Beverwijk I"]
[Site "?"]
[Date "1962.??.??"]
[EventDate "1962.??.??"]
[Round "1"]
[Result "0-1"]
[White "Kick Langeweg"]
[Black "Jan Hein Donner"]
[ECO "A16"]
[WhiteElo "2309"]
[BlackElo "2500"]
[PlyCount "148"]

1. c4 Nf6 2. Nc3 d5 3. cxd5 Nxd5 4. e3 e6 5. Nf3 Be7 6. d4 O-O
7. Bd3 c5 8. O-O Nc6 9. a3 cxd4 10. exd4 Bd7 11. Nxd5 exd5
12. Qb3 Bg4 13. Qxb7 Na5 14. Qa6 Bxf3 15. gxf3 Nb3 16. Rb1
Nxc1 17. Rfxc1 Bd6 18. Rc6 Qg5+ 19. Kh1 Bf4 20. Rg1 Qh5
21. Rg2 Qxf3 22. Be2 Qb3 23. Qb5 Qa2 24. Bf3 Rab8 25. Qxd5
Qxb2 26. Qe4 Qb1+ 27. Rg1 Qxe4 28. Bxe4 Rb3 29. Ra6 Rh3
30. Rb1 Rxh2+ 31. Kg1 Rh4 32. Bf3 Bb8 33. d5 Rd4 34. Rb7 g5
35. Ra5 g4 36. Be2 Kg7 37. Rab5 Re8 38. Kf1 Bd6 39. Rxa7 Rf4
40. Ra6 g3 41. f3 g2+ 42. Kxg2 Rxe2+ 43. Kf1 Rc2 44. Rxd6
Rxf3+ 45. Kg1 Rxa3 46. Rb1 Raa2 47. Rdb6 Rg2+ 48. Kh1 Rh2+
49. Kg1 Rhd2 50. d6 h5 51. Rc1 Rg2+ 52. Kh1 Rh2+ 53. Kg1 Rag2+
54. Kf1 Rd2 55. Kg1 Rhe2 56. Kf1 Rh2 57. Kg1 h4 58. Rb3 Rhe2
59. Kf1 Re4 60. Rf3 Rxd6 61. Rc7 Rf6 62. Rxf6 Kxf6 63. Kg2 Re3
64. Rc5 Rg3+ 65. Kf2 Kg6 66. Rc4 Kh5 67. Rc5+ Rg5 68. Rc3 f5
69. Rb3 Rg6 70. Rb1 h3 71. Rh1 Kh4 72. Kf3 Rg3+ 73. Kf4 Rg2
74. Kf3 Ra2 0-1

[Event "Beverwijk I"]
[Site "?"]
[Date "1962.??.??"]
[EventDate "1962.??.??"]
[Round "2"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Cenek Kottnauer"]
[ECO "A42"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "49"]

1. c4 g6 2. d4 Bg7 3. e4 d6 4. Nc3 Nc6 5. d5 Nd4 6. Nge2 Nxe2
7. Bxe2 Nf6 8. O-O O-O 9. Be3 Nd7 10. Qd2 Nc5 11. f3 a5
12. Rfd1 Bd7 13. Rab1 a4 14. Bf1 Qb8 15. Rdc1 Rc8 16. Re1 Be8
17. e5 c6 18. f4 Qc7 19. Bd4 Bd7 20. Rbd1 Bf5 21. dxc6 bxc6
22. exd6 Bxd4+ 23. Qxd4 exd6 24. Qxd6 Qa5 25. Re5 1-0

[Event "Beverwijk I"]
[Site "?"]
[Date "1962.??.??"]
[EventDate "1962.??.??"]
[Round "4"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Manuel Aaron"]
[ECO "D35"]
[WhiteElo "2500"]
[BlackElo "2315"]
[PlyCount "63"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. cxd5 exd5 5. Bg5 Be7 6. e3 O-O
7. Bd3 Nbd7 8. Nf3 Re8 9. O-O c6 10. Qc2 h6 11. Bh4 Ne4
12. Bxe7 Qxe7 13. b4 a6 14. a4 Ng5 15. Nxg5 Qxg5 16. b5 axb5
17. axb5 Rxa1 18. Rxa1 Nf6 19. Ra7 g6 20. Ne2 Rxe3 21. fxe3
Qxe3+ 22. Kf1 Ng4 23. Ke1 Bf5 24. Bxf5 Qf2+ 25. Kd2 Qe3+
26. Kd1 gxf5 27. Qxf5 Qb3+ 28. Kc1 Qc4+ 29. Qc2 Qxb5 30. Ng3
Qb4 31. Ra8+ Kg7 32. Nh5# 1-0

[Event "Beverwijk I"]
[Site "?"]
[Date "1962.??.??"]
[EventDate "1962.??.??"]
[Round "5"]
[Result "0-1"]
[White "O'Kelly"]
[Black "Jan Hein Donner"]
[ECO "B92"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "44"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5
7. Nf3 Be7 8. Bg5 Be6 9. Nd2 Nbd7 10. Nc4 Qc7 11. Ne3 O-O
12. O-O Rfc8 13. Bg4 Nxg4 14. Bxe7 Nxe3 15. fxe3 Qb6 16. Nd5
Qxb2 17. Bxd6 Rxc2 18. Qf3 Bxd5 19. exd5 Nf6 20. Be7 e4
21. Qf4 Rxg2+ 22. Kh1 Rg4 0-1

[Event "Beverwijk I"]
[Site "?"]
[Date "1962.??.??"]
[EventDate "1962.??.??"]
[Round "7"]
[Result "0-1"]
[White "F Henneberke"]
[Black "Jan Hein Donner"]
[ECO "E76"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "146"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f4 O-O 6. Nf3 c5
7. dxc5 Qa5 8. Bd3 Qxc5 9. Qe2 Nc6 10. Be3 Qa5 11. O-O Bg4
12. Qd2 Bxf3 13. gxf3 Nd7 14. Rac1 Bd4 15. Rf2 Bxe3 16. Qxe3
Qc5 17. Qxc5 Nxc5 18. Rd2 f5 19. Ne2 fxe4 20. Bxe4 Kg7 21. Re1
Nxe4 22. fxe4 Rf6 23. Red1 Raf8 24. Rd3 h6 25. h4 Kh7 26. Kg2
Kg7 27. Kh3 b6 28. Kg4 g5 29. hxg5 hxg5 30. Ng3 Rxf4+ 31. Kxg5
Kg8 32. Nf5 Rxe4 33. Rg3 Re5 34. Rd5 Re1 35. Nh6+ Kg7 36. Nf5+
Kh7 37. Rh3+ Kg8 38. Nh6+ Kg7 39. Kh5 Ne5 40. Rd2 Rg1 41. Rhh2
Rg6 42. Rdg2 Rh8 43. Rxg6+ Nxg6 44. Kg5 e6 45. Ng4 Rxh2
46. Nxh2 Ne5 47. b3 Kf7 48. Nf1 Nd3 49. Nd2 Ke7 50. Kg4 Nb4
51. a3 Nc2 52. a4 d5 53. cxd5 exd5 54. Kf3 Kd6 55. Ke2 Nb4
56. Nf3 Kc5 57. Kd2 Nc6 58. Kc3 d4+ 59. Kb2 Kb4 60. Ne1 Ne5
61. Nc2+ Kc5 62. Ne1 Kd5 63. Kc2 Ke4 64. Kd2 d3 65. Kc3 Ke3
66. Ng2+ Kf3 67. Ne1+ Ke2 68. Nxd3 Nxd3 69. Kc4 a6 70. Kd5
Nb4+ 71. Kc4 a5 72. Kb5 Nd5 73. Kc4 Kd2 0-1

[Event "Beverwijk I"]
[Site "?"]
[Date "1962.??.??"]
[EventDate "1962.??.??"]
[Round "8"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Arthur Bisguier"]
[ECO "E52"]
[WhiteElo "2500"]
[BlackElo "2228"]
[PlyCount "84"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6
7. cxd5 exd5 8. O-O Bb7 9. Qc2 Re8 10. Ne5 Nbd7 11. f4 Bf8
12. b3 g6 13. Bb2 a6 14. a4 c5 15. Qe2 Bg7 16. g4 Nf8 17. Rad1
N6d7 18. Qf3 Ne6 19. Bb1 cxd4 20. exd4 Nf6 21. g5 Nh5 22. Ne2
a5 23. Bd3 Ba6 24. Bxa6 Rxa6 25. Rc1 Ra8 26. Kh1 Bxe5 27. dxe5
Rc8 28. Rfd1 Rxc1 29. Bxc1 Qc7 30. Rxd5 Rd8 31. Kg2 Rxd5
32. Qxd5 Qc2 33. Qf3 Nhxf4+ 34. Bxf4 Nxf4+ 35. Qxf4 Qxe2+
36. Kg3 Qd3+ 37. Qf3 Qd4 38. Qf6 Qd2 39. h4 Qc3+ 40. Kg2 Qc2+
41. Kg1 h6 42. e6 Qd1+ 1/2-1/2

[Event "Beverwijk I"]
[Site "?"]
[Date "1962.??.??"]
[EventDate "1962.??.??"]
[Round "9"]
[Result "1-0"]
[White "T Van Scheltinga"]
[Black "Jan Hein Donner"]
[ECO "A47"]
[WhiteElo "2325"]
[BlackElo "2500"]
[PlyCount "83"]

1. d4 Nf6 2. Nf3 b6 3. Nbd2 Bb7 4. e3 e6 5. Bd3 d5 6. Ne5 Bd6
7. f4 O-O 8. O-O Ne4 9. Rf3 f6 10. Ng4 f5 11. Ne5 Nd7 12. Rh3
g6 13. Ndf3 Nxe5 14. Nxe5 c5 15. Bd2 Nxd2 16. Qxd2 c4 17. Be2
b5 18. g4 b4 19. Rg3 Qe7 20. Kg2 Rac8 21. Rh1 Bxe5 22. fxe5 c3
23. bxc3 Rxc3 24. gxf5 exf5 25. h4 Kh8 26. Bd3 Bc8 27. Qf2 Be6
28. Qf4 Rcc8 29. h5 gxh5 30. Rxh5 Rf7 31. Kf3 Rcf8 32. Rh6 Rg8
33. Rxg8+ Kxg8 34. Rh3 Kf8 35. Qh6+ Ke8 36. Rg3 Kd7 37. Kf4
Kc7 38. Rg5 Qd7 39. Rg8 Kb7 40. Qg5 Qc7 41. Re8 Rg7 42. Rxe6
1-0

[Event "Varna ol (Men)"]
[Site "Varna, Bulgaria"]
[Date "1962.09.16"]
[EventDate "?"]
[Round "1"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Ludek Pachman"]
[ECO "E58"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 c5 7.O-O
Nc6 8.a3 Bxc3 9.bxc3 Qc7 10.cxd5 exd5 11.Nh4 Ne7 12.a4 c4
13.Bc2 Ng6 14.Nf5 Ne4 15.Ng3 f5 16.Ne2 Be6 17.f3 Nd6 18.Ba3
Rae8 19.Qd2 Rf7 20.Ng3 Qd7 21.Rae1 b6 22.Qc1 Ne7 23.Rf2 Kh8
24.Rfe2 Ng8 25.Bxd6 Qxd6 26.e4 fxe4 27.fxe4 Ref8 28.exd5 Bxd5
29.Qg5 Qd7 30.Qh4 h6 31.Nh5 Qd6 32.Qg3 Qxg3 33.Nxg3 g5 34.Nf1
Nf6 35.Ng3 Re7 36.Nf5 Rxe2 37.Rxe2 h5 38.Re5 g4 39.Ne3 Bg8
40.g3 Rc8 41.Bg6 1/2-1/2

[Event "Varna ol (Men)"]
[Site "Varna, Bulgaria"]
[Date "1962.??.??"]
[EventDate "?"]
[Round "9"]
[Result "1/2-1/2"]
[White "Ludek Pachman"]
[Black "Jan Hein Donner"]
[ECO "D57"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "47"]

1.c4 e6 2.Nf3 d5 3.d4 Nf6 4.Nc3 Be7 5.Bg5 h6 6.Bh4 Ne4 7.Bxe7
Qxe7 8.cxd5 Nxc3 9.bxc3 exd5 10.Qb3 Qd6 11.e3 O-O 12.c4 dxc4
13.Bxc4 Nd7 14.O-O c5 15.Qa3 b6 16.Rfd1 Bb7 17.Be2 Rfd8
18.Rac1 Qf8 19.dxc5 Nxc5 20.Nd4 Ne4 21.Qa4 Nc5 22.Qa3 Ne4
23.Qa4 Nc5 24.Qa3 1/2-1/2

[Event "Amsterdam <Botwinnik, Pachman>"]
[Site "Amsterdam <Botwinnik, Pachman>"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Mikhail Botvinnik"]
[Black "Jan Hein Donner"]
[ECO "A14"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "61"]

1.c4 Nf6 2.Nf3 e6 3.g3 d5 4.Bg2 Be7 5.O-O O-O 6.b3 b6 7.Bb2
Bb7 8.cxd5 Nxd5 9.d4 c5 10.dxc5 Bxc5 11.Nbd2 Nd7 12.a3 N5f6
13.b4 Be7 14.Nd4 Bxg2 15.Kxg2 Qc7 16.Qb3 Rfc8 17.Rfc1 Qb7+
18.Qf3 Nd5 19.e4 N5f6 20.b5 a6 21.Nc6 Bf8 22.a4 axb5 23.axb5
Rxa1 24.Rxa1 Ra8 25.Rd1 Ne8 26.Nc4 Nc5 27.e5 Rc8 28.Ra1 Rc7
29.Ra7 Qxa7 30.Nxa7 Rxa7 31.Nxb6 1-0

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "15"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "David Bronstein"]
[ECO "D25"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "32"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4 5. Bxc4 e6 6. Nc3
Nbd7 7. O-O Nb6 8. Be2 Be7 9. a4 a6 10. Ne5 Bxe2 11. Qxe2 c5
12. dxc5 Bxc5 13. Nd3 Be7 14. e4 O-O 15. Rd1 Rc8 16. Bf4 Qe8
1/2-1/2

[Event "Beverwijk"]
[Site "11"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Borislav Ivkov"]
[Black "Jan Hein Donner"]
[ECO "B06"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "61"]

1.e4 g6 2.d4 Bg7 3.Nf3 d6 4.Bc4 c6 5.Bb3 Nf6 6.Qe2 e5 7.dxe5
dxe5 8.a4 O-O 9.Nbd2 Qc7 10.Nc4 Nbd7 11.c3 a5 12.O-O Nc5
13.Bc2 Nh5 14.g3 Bg4 15.Ne3 Bh3 16.Re1 h6 17.Nh4 Nf6 18.Nc4
Rfe8 19.Be3 Bf8 20.Rad1 Be6 21.Nf3 Nfd7 22.Bc1 Kh7 23.h4 Bg4
24.Ne3 Be6 25.Nc4 Be7 26.Kg2 f6 27.h5 g5 28.Nfd2 Bf8 29.Ne3
Nb6 30.b3 Qf7 31.c4 1/2-1/2

[Event "Halle"]
[Site "Halle"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Borislav Ivkov"]
[Black "Jan Hein Donner"]
[ECO "C83"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "89"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3
d5 8.dxe5 Be6 9.Qe2 Be7 10.c3 O-O 11.Nbd2 Nxd2 12.Bxd2 Qd7
13.Rad1 Rad8 14.Rfe1 Rfe8 15.h3 Na5 16.Bg5 c5 17.Bxe7 Rxe7
18.Qe3 Nxb3 19.axb3 Qa7 20.b4 d4 21.bxc5 Qxc5 22.Rxd4 Rde8
23.Rd6 Qxe3 24.Rxe3 Bc8 25.Nd4 Kf8 26.f4 h5 27.h4 Rc7 28.Kf2
Bb7 29.g3 Bc8 30.b4 Rc4 31.Ke1 Ke7 32.Nc6+ Kf8 33.Kd2 Re6
34.Na5 Rc7 35.Rxe6 Bxe6 36.Rd3 Rd7 37.Rxd7 Bxd7 38.Nb7 g6
39.Ke3 Ke7 40.Nc5 Bc8 41.Ke4 Kd8 42.Kd4 Kc7 43.Kd5 Kb6 44.Kd6
a5 45.Nd7+ 1-0

[Event "Beverwijk (Netherlands)"]
[Site "It"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Bruno Parma"]
[Black "Jan Hein Donner"]
[ECO "B17"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "49"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Bc4 Ngf6 6.Ng5 e6
7.Qe2 Nb6 8.Bb3 Be7 9.N1f3 O-O 10.Bd2 a5 11.a3 a4 12.Ba2 c5
13.dxc5 Bxc5 14.O-O Nbd5 15.c4 Ne7 16.Bc3 Ng6 17.Rad1 Qe7
18.Ne5 b6 19.Bb1 Bb7 20.Nxg6 hxg6 21.Rd3 Rfd8 22.Rfd1 Rxd3
23.Rxd3 Rd8 24.Rxd8+ Qxd8 25.Bxg6 1-0

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Lajos Portisch"]
[Black "Jan Hein Donner"]
[ECO "A15"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "23"]

1.Nf3 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O d6 6.Nc3 Nc6 7.d3
Bd7 8.Rb1 a6 9.b4 b5 10.cxb5 axb5 11.Nxb5 Rxa2 12.Nc3 1/2-1/2

[Event "Halle"]
[Site "03"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Lajos Portisch"]
[Black "Jan Hein Donner"]
[ECO "D37"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "49"]

1.c4 Nf6 2.Nc3 e6 3.Nf3 d5 4.d4 Be7 5.Bf4 O-O 6.e3 Nbd7 7.c5
Nh5 8.Bd3 g6 9.O-O c6 10.b4 b6 11.Bh6 Re8 12.e4 Qc7 13.Re1
dxe4 14.Bxe4 Nhf6 15.Nb5 Qb7 16.Nd6 Bxd6 17.cxd6 Nxe4 18.Rxe4
c5 19.Rh4 c4 20.Qd2 f6 21.Bg7 Ne5 22.dxe5 Qxg7 23.Rxc4 fxe5
24.Rc7 Bd7 25.Qc3 1-0

[Event "Beverwijk"]
[Site "17"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Karl Robatsch"]
[ECO "B07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "64"]

1.d4 g6 2.e4 d6 3.g3 Bg7 4.Bg2 c5 5.dxc5 Qa5+ 6.c3 Qxc5 7.Ne2
Nf6 8.h3 O-O 9.Be3 Qc7 10.O-O Nbd7 11.Na3 a6 12.Qc2 Rb8 13.c4
b6 14.Rac1 Bb7 15.Nc3 Rfc8 16.Rfd1 Qd8 17.Qe2 Qf8 18.g4 Nc5
19.f3 Nfd7 20.b4 Ne6 21.Nd5 Ba8 22.Nc2 Bb2 23.Rb1 Be5 24.Bf1
Nc7 25.Qf2 Nxd5 26.exd5 Bg7 27.Nd4 Ne5 28.Rdc1 b5 29.cxb5 axb5
30.a4 Bxd5 31.axb5 Rxc1 32.Rxc1 Rc8 1/2-1/2

[Event "Halle zt"]
[Site "Halle zt"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Karl Robatsch"]
[Black "Jan Hein Donner"]
[ECO "B10"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "157"]

1.e4 c6 2.d3 d5 3.Nd2 g6 4.Ngf3 Bg7 5.g3 e5 6.Bg2 Ne7 7.O-O
O-O 8.Re1 Qc7 9.c3 f5 10.Qe2 Nd7 11.Ng5 Qd6 12.exd5 cxd5 13.f4
e4 14.dxe4 dxe4 15.Ndxe4 fxe4 16.Qxe4 Nf5 17.Qd5+ Kh8 18.Qxd6
Nxd6 19.Be3 Nf5 20.Bf2 Nf6 21.Bc5 Bd7 22.Bxf8 Bxf8 23.Nf7+ Kg7
24.Ne5 Be8 25.Rad1 Bc5+ 26.Kh1 Ne3 27.Rd2 Nxg2 28.Kxg2 Rc8
29.g4 Rc7 30.Kf3 Be7 31.Rde2 Kf8 32.Rd2 a5 33.Red1 a4 34.a3 b6
35.Rd4 Bb5 36.g5 Ne8 37.Nd7+ Kf7 38.Ne5+ Kf8 39.Nd7+ Kg7
40.Ne5 Bc5 41.Rd8 Re7 42.c4 Ba6 43.R1d7 Kf8 44.Rxe7 Bxe7
45.Rb8 Bc5 46.Ke4 Ke7 47.Kd3 Nd6 48.Ra8 Bb7 49.Rxa4 Ke6 50.Ra7
b5 51.Rxb7 bxc4+ 52.Nxc4 Nxb7 53.Ke4 Bg1 54.h3 Nc5+ 55.Kf3 Nb3
56.Ke4 Ba7 57.h4 Nc5+ 58.Kf3 Nd3 59.Ke4 Nf2+ 60.Kf3 Nd3 61.Ke4
Nc5+ 62.Kd4 Kf5 63.Nd6+ Kg4 64.Nc8 Ne6+ 65.Ke5 Bd4+ 66.Kxe6
Bxb2 67.a4 Bc3 68.Ne7 Kxh4 69.Nc6 Kg4 70.Ne7 Bd2 71.Nd5 Kf3
72.Ke5 Be1 73.f5 gxf5 74.Kxf5 Bd2 75.Nf6 Ke3 76.Nxh7 Kd4 77.g6
Bh6 78.Kf6 Kc4 79.Kf7 1-0

[Event "Halle"]
[Site "zt"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Zbigniew Doda"]
[ECO "E60"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "72"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 c5 6.e3 d6 7.Nge2
Nc6 8.O-O cxd4 9.exd4 Bd7 10.h3 a6 11.Be3 Rb8 12.d5 Na5 13.b3
b5 14.cxb5 axb5 15.Rc1 b4 16.Na4 Bxa4 17.bxa4 Nd7 18.Nd4 Nc5
19.Qc2 Bxd4 20.Bxd4 b3 21.Qe2 Nxa4 22.Rb1 Qd7 23.Qd2 Rb5
24.Qh6 f6 25.axb3 Nxb3 26.Be3 Nc3 27.Rb2 Rfb8 28.Re1 Nc5
29.Rxb5 Rxb5 30.Bd4 N3a4 31.Bf3 Qd8 32.Bg4 Qf8 33.Qe3 Nb3
34.Be6+ Kh8 35.Bd7 Rb4 36.Ba7 Nac5 1/2-1/2

[Event "Halle"]
[Site "zt"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Ingi Randver Johannsson"]
[ECO "D25"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "56"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 Bg4 5.Bxc4 e6 6.Qb3 Bxf3
7.gxf3 Nbd7 8.Qxb7 c5 9.Nc3 Be7 10.d5 exd5 11.Nxd5 O-O 12.f4
Nxd5 13.Qxd5 Bf6 14.O-O Qe7 15.Be2 Rab8 16.Rb1 Nb6 17.Qf5 c4
18.Bd2 g6 19.Qc2 Rfc8 20.Bc3 Nd5 21.Bxf6 Qxf6 22.Rfd1 Nb4
23.Qc3 Qe6 24.a3 Nd3 25.Bxd3 Qg4+ 26.Kf1 Qh3+ 27.Kg1 Qg4+
28.Kf1 Qh3+ 1/2-1/2

[Event "Halle"]
[Site "zt"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Martin Johansson Sr"]
[ECO "E54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "59"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 d5 6.Nf3 O-O 7.O-O
dxc4 8.Bxc4 b6 9.Qe2 Bb7 10.Rd1 cxd4 11.exd4 Nbd7 12.Bd2 Bxc3
13.bxc3 Qc7 14.Bd3 Rfe8 15.Re1 Rac8 16.Rac1 Qd6 17.Rc2 h6
18.Ne5 Nxe5 19.Qxe5 Qxe5 20.Rxe5 Red8 21.Re1 Nd7 22.f3 Nb8
23.Kf2 Ba6 24.Bxa6 Nxa6 25.Ke3 Nb4 26.Rb2 Nc6 27.Kd3 e5 28.Be3
Rd7 29.Rd2 Rcd8 30.Kc2 1/2-1/2

[Event "Halle"]
[Site "zt"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Ove Kinnmark"]
[ECO "D27"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "53"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.a4
Nc6 8.Qe2 Be7 9.dxc5 Bxc5 10.e4 Qc7 11.e5 Nd7 12.Bf4 b6
13.Nbd2 Bb7 14.Rac1 Qb8 15.Rfd1 Nd4 16.Nxd4 Bxd4 17.Ne4 Bxe4
18.Qxe4 Bxe5 19.Rxd7 Bxf4 20.Rxf7 Bxh2+ 21.Kf1 Qc8 22.Re1 Be5
23.Bxe6 Qxe6 24.Rf5 O-O-O 25.Rxe5 Qd6 26.Qa8+ Qb8 27.Rc1+ 1-0

[Event "Halle"]
[Site "zt"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Burkhard G J Malich"]
[ECO "D74"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "59"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d5 5.cxd5 Nxd5 6.Nf3 O-O 7.O-O
c5 8.e4 Nf6 9.e5 Nd5 10.dxc5 Na6 11.Qe2 Nxc5 12.Rd1 b6 13.Ne1
Ba6 14.Qc2 e6 15.Nc3 Qe7 16.Nxd5 exd5 17.f4 Rac8 18.Be3 f6
19.Nf3 Bb7 20.Bd4 fxe5 21.Bxe5 Ne4 22.Qd3 Bxe5 23.Nxe5 Qc5+
24.Qd4 Qxd4+ 25.Rxd4 Rc2 26.Nd7 Rf7 27.Ne5 Rf8 28.Nd7 Rf7
29.Ne5 Rf8 30.Nd7 1/2-1/2

[Event "Halle"]
[Site "zt"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Nikolay Minev"]
[ECO "D46"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "131"]

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6 5.e3 Nbd7 6.Bd3 Bb4 7.a3
Ba5 8.O-O O-O 9.Bd2 Bc7 10.Qc2 dxc4 11.Bxc4 e5 12.Ba2 exd4
13.exd4 Nb6 14.Bg5 Qd6 15.Rfe1 Nbd5 16.Rac1 a6 17.Bh4 Ne7
18.Bg3 Qd8 19.Bxc7 Qxc7 20.d5 Qd6 21.dxc6 Nxc6 22.Rcd1 Qf4
23.Nd5 Nxd5 24.Bxd5 Bf5 25.Qb3 Rab8 26.g3 Qh6 27.Ne5 Qf6
28.Qc3 Nxe5 29.Qxe5 b6 30.Rc1 Bg6 31.b4 Rfd8 32.Bg2 Qxe5
33.Rxe5 Rd7 34.h4 f6 35.Rd5 Rxd5 36.Bxd5+ Bf7 37.Bxf7+ Kxf7
38.Rc7+ Kg6 39.Ra7 a5 40.bxa5 bxa5 41.Rxa5 h5 42.Rc5 Rb3 43.a4
Rb4 44.a5 Ra4 45.Kf1 Ra2 46.Rd5 Kh6 47.f3 g5 48.hxg5 fxg5
49.Rd6+ Kg7 50.a6 Ra4 51.Rd7+ Kg6 52.Ra7 h4 53.gxh4 g4 54.fxg4
Rxg4 55.Ra8 Kg7 56.Ke2 Rxh4 57.Kd3 Rf4 58.Kc3 Rf3+ 59.Kd4 Rf5
60.Ra7+ Kg6 61.Rb7 Ra5 62.a7 Kf6 63.Kc4 Ke6 64.Kb4 Ra1 65.Kc5
Ra2 66.Kc6 1-0

[Event "Halle"]
[Site "zt"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Per Ofstad"]
[ECO "E40"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "114"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 d5 5.a3 Be7 6.Nf3 c6 7.Bd3
Nbd7 8.O-O O-O 9.e4 dxe4 10.Nxe4 Nxe4 11.Bxe4 Qc7 12.Re1 c5
13.Bc2 Rd8 14.Qd3 Nf8 15.Be3 b6 16.Qc3 Bb7 17.dxc5 Bxc5
18.Bxc5 Qxc5 19.b4 Qh5 20.Be4 Bxe4 21.Rxe4 Rd7 22.c5 bxc5
23.bxc5 Rc7 24.c6 Qd5 25.Rc4 Rac8 26.Rc1 Ng6 27.Rc5 Qd6 28.Qc2
Ne7 29.Rd1 Nd5 30.Nd4 a6 31.Ra5 Ne7 32.Nf5 Qf4 33.Nxe7+ Rxe7
34.Rxa6 Rec7 35.Ra4 Qe5 36.Rc4 g6 37.g3 Rb8 38.a4 Rb2 39.Qd3
Kg7 40.Rdc1 Qf6 41.Rf4 Qe5 42.h4 Rb6 43.Rfc4 Rb2 44.R4c2 Rb4
45.Ra2 Rb6 46.Rac2 Rb4 47.Rc4 Rb2 48.a5 Ra2 49.Rc5 Qb2 50.Qf1
Qd4 51.Rb5 Ra3 52.Qg2 Rc3 53.Rxc3 Qxc3 54.a6 Qa1+ 55.Kh2 Qxa6
56.Rc5 Qa3 57.Rc2 Qd3 1/2-1/2

[Event "Halle"]
[Site "zt"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Petar Trifunovic"]
[ECO "D43"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "59"]

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6 5.Bg5 h6 6.Bxf6 Qxf6 7.e3
Nd7 8.cxd5 exd5 9.Be2 Bd6 10.O-O O-O 11.a3 Qe7 12.b4 Nf6
13.Qc2 Bg4 14.Nd2 Bxe2 15.Nxe2 a5 16.bxa5 Rxa5 17.a4 Rfa8
18.Ra2 Qc7 19.g3 b5 20.Rfa1 Rxa4 21.Rxa4 Rxa4 22.Rxa4 bxa4
23.Qxa4 g6 24.Qc2 h5 25.h3 Kg7 26.Kg2 Nd7 27.Nb3 Qb6 28.Nc3
Bb4 29.Ne2 Bd6 30.Nc3 1/2-1/2

[Event "Halle"]
[Site "zt"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Wolfgang Uhlmann"]
[ECO "D72"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "92"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d5 5.cxd5 Nxd5 6.e4 Nb6 7.Ne2
Bg4 8.Nbc3 Nc6 9.d5 Nd4 10.O-O c5 11.h3 Bd7 12.f4 e6 13.d6 e5
14.fxe5 Bxe5 15.Nf4 Bc6 16.Nd3 Bxd6 17.e5 Bxg2 18.Kxg2 Be7
19.Bh6 Nf5 20.Rxf5 gxf5 21.e6 Qd6 22.exf7+ Kxf7 23.Qh5+ Kg8
24.Nf4 Qf6 25.Re1 Qf7 26.Rxe7 Qxe7 27.Qxf5 Rf8 28.Qg4+ Kf7
29.Qh5+ Kg8 30.Qg4+ Kf7 31.Qh5+ Kg8 32.Bxf8 Kxf8 33.Ng6+ hxg6
34.Qxh8+ Kf7 35.Qh7+ Kf6 36.Qh4+ Kf7 37.Qh7+ Kf6 38.Qxe7+ Kxe7
39.Kf3 Nc4 40.b3 Nd6 41.Ke3 Ke6 42.Ne4 Nf5+ 43.Kf4 b6 44.g4
Nd4 45.h4 a5 46.h5 gxh5 0-1

[Event "Halle"]
[Site "zt"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Svend Hamann"]
[Black "Jan Hein Donner"]
[ECO "E20"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "48"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bd2 d5 5.e3 O-O 6.Nf3 b6 7.a3 Bd6
8.cxd5 exd5 9.Bd3 Re8 10.Qc2 a6 11.h3 Bb7 12.O-O-O c5 13.g4
Nbd7 14.Be1 b5 15.dxc5 Nxc5 16.Nd4 Nfe4 17.Kb1 Rc8 18.Qe2 Be5
19.Nxe4 dxe4 20.Bc2 Bd5 21.f4 exf3 22.Nxf3 Bxb2 23.Rf1 Bxa3
24.h4 Bc4 0-1

[Event "Halle"]
[Site "zt"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Svein Johannessen"]
[Black "Jan Hein Donner"]
[ECO "B90"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "80"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.h3 Nc6 7.g4
d5 8.Bg2 dxe4 9.Nxc6 Qxd1+ 10.Nxd1 bxc6 11.Nc3 Bb7 12.Nxe4
Nxe4 13.Bxe4 O-O-O 14.Be3 g6 15.Ke2 Bg7 16.c3 Kc7 17.Rad1 Bc8
18.f3 Be6 19.Bc5 Bd5 20.Bd3 Rd7 21.c4 Be6 22.b3 Rhd8 23.Bc2
Bd4 24.Bxd4 Rxd4 25.Rxd4 Rxd4 26.Rd1 Rxd1 27.Bxd1 Kd6 28.Ke3
g5 29.Bc2 h6 30.Kd4 c5 31.Ke3 Ke5 32.Be4 a5 33.Bd3 f5 34.Bc2
Bd7 35.Bb1 e6 36.Bc2 Be8 37.Bd3 f4 38.Kd2 Bc6 39.Be2 Kd4
40.Bd1 e5 0-1

[Event "Halle"]
[Site "zt"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Ilkka Antero Kanko"]
[Black "Jan Hein Donner"]
[ECO "A56"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1.d4 Nf6 2.c4 c5 3.d5 d6 4.Nc3 g6 5.e4 Bg7 6.Bd3 O-O 7.Nge2 e5
8.Ng3 Ne8 9.Qc2 h5 10.O-O Nd7 11.Be3 Ndf6 12.f3 h4 13.Nge2 Nh5
14.Rab1 Bf6 15.Qd2 Be7 16.a3 Neg7 17.b4 b6 18.Rb3 f5 19.bxc5
bxc5 20.Qb2 Bg5 21.Bf2 Bf4 22.Rb8 Rxb8 23.Qxb8 a6 24.Rb1 Qg5
25.Qxd6 Be3 26.Nd1 Bxf2+ 27.Nxf2 fxe4 28.Bxe4 Qe3 29.Qxg6 Nf6
30.Re1 h3 31.Bb1 e4 32.Bxe4 hxg2 33.Bd3 Bd7 34.Rb1 Be8 35.Qxg2
Nh5 36.f4 Nxf4 37.Nxf4 Rxf4 38.Qg3 Qd4 39.Rd1 Kh8 40.Be2 Qe5
41.Nh3 1-0

[Event "Halle"]
[Site "zt"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Lubomir Kavalek"]
[Black "Jan Hein Donner"]
[ECO "C14"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "157"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.f4
O-O 8.Nf3 c5 9.dxc5 Nc6 10.Bd3 f6 11.exf6 Qxf6 12.g3 Nxc5
13.O-O Bd7 14.Qd2 Be8 15.Rae1 Nxd3 16.cxd3 Bg6 17.Nb5 Bf5
18.Ne5 Qd8 19.Kg2 d4 20.Nxc6 bxc6 21.Na3 Qd5+ 22.Kg1 Qxa2
23.Nc4 Qb3 24.Ne5 Qd5 25.g4 Bg6 26.Nc4 Rab8 27.Re5 Qd7 28.Rc5
Rb5 29.Ne5 Qb7 30.Rxb5 cxb5 31.Qb4 Qd5 32.Rc1 Qd8 33.Qxb5 Rxf4
34.Qa6 Qe7 35.Rc8+ Rf8 36.Rxf8+ Kxf8 37.Qc8+ Be8 38.Qb8 g5
39.b4 Kg7 40.Nf3 Bg6 41.Nxd4 Bxd3 42.Qe5+ Qf6 43.Nxe6+ Kg6
44.Qxf6+ Kxf6 45.Nd4 Be4 46.Kf2 Ke5 47.Ke3 Bg2 48.Nb5 a6
49.Nc3 Bc6 50.Nd1 Kd5 51.Nb2 Bd7 52.h3 Be8 53.Nd3 Bc6 54.Nb2
Bd7 55.Nd3 Bc6 56.Nb2 Bb5 57.Nd3 h6 58.Nc5 Ke5 59.Nb3 Bf1
60.Nc5 Bxh3 61.Nxa6 Bxg4 62.b5 Bc8 63.Nc5 Kd5 64.Ne4 Bb7 65.b6
Bc8 66.Nf6+ Kc6 67.Ke4 Kxb6 68.Ke5 Ba6 69.Ne4 Bd3 70.Ng3 Kc5
71.Kf6 Kd4 72.Kg7 Ke5 73.Kxh6 Kf4 74.Nh5+ Kg4 75.Nf6+ Kf5
76.Nd5 Be4 77.Ne3+ Kf4 78.Kh5 Bc6 79.Kh6 1/2-1/2

[Event "Halle"]
[Site "zt"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Bent Larsen"]
[Black "Jan Hein Donner"]
[ECO "A03"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "108"]

1.f4 d5 2.Nf3 Nf6 3.e3 g6 4.b4 Bg7 5.Bb2 O-O 6.Be2 b6 7.O-O
Bb7 8.Na3 Nbd7 9.c4 c5 10.bxc5 Nxc5 11.Bd4 dxc4 12.Nxc4 Nd5
13.Bxg7 Kxg7 14.Qb1 f6 15.a4 Qd7 16.h4 Nc7 17.Nd4 N7e6
18.Nxe6+ Qxe6 19.Qb4 Na6 20.Qb2 Rac8 21.Na3 Nc5 22.Nb5 a6
23.Nd4 Qd6 24.Rfb1 Be4 25.Rf1 Rfd8 26.Bg4 Rb8 27.a5 e5 28.fxe5
fxe5 29.Nf3 bxa5 30.Qc3 Rb3 31.Qxa5 Rb5 32.Qc3 Bxf3 33.Bxf3
Qe7 34.Be2 Rb6 35.Bc4 Ne4 36.Qa5 Qc5 37.Qxc5 Nxc5 38.Ra5 Rc6
39.g4 Rd7 40.g5 e4 41.Rf6 Nb7 42.Rd5 Rcd6 43.Rfxd6 Rxd6 44.Re5
Kf8 45.Rxe4 Rxd2 46.Rf4+ Ke8 47.Bf7+ Kd8 48.Bg8 Rd7 49.e4 Nc5
50.Kg2 Re7 51.Kf3 a5 52.Bd5 Nd7 53.Ke3 h6 54.Rf8+ Nxf8 0-1

[Event "Halle"]
[Site "zt"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Mircea Pavlov"]
[Black "Jan Hein Donner"]
[ECO "B99"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "51"]

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 gxf6 12.a3 Nb6
13.h4 Bd7 14.g5 O-O-O 15.a4 Nxa4 16.Nxa4 bxa4 17.Bxa6+ Kb8
18.Bb5 Bxb5 19.Nxb5 Qb7 20.Qe2 d5 21.exd5 exd5 22.Rhe1 Rd7
23.Rd4 Bc5 24.Rdd1 Qb6 25.gxf6 Rb7 26.Qe8+ 1-0

[Event "Halle"]
[Site "zt"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Heikki M J Westerinen"]
[Black "Jan Hein Donner"]
[ECO "D55"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bg5 O-O 6.e3 b6 7.cxd5
Nxd5 8.Bxe7 Qxe7 9.Nxd5 exd5 10.Rc1 Be6 11.Qa4 c5 12.dxc5 bxc5
13.Qa3 Rc8 14.Be2 Nd7 15.O-O Qd6 16.Rfd1 Qb6 17.Rd2 a5 18.b3
Qb4 19.Qb2 a4 20.Ne1 axb3 21.Nd3 Qa5 22.axb3 c4 23.b4 Qa7
24.Ne1 Qb7 25.Bf3 Nf6 26.Rd4 Qb5 27.Qd2 h6 28.Rf4 Rcb8 29.Rb1
Ra4 30.Nc2 Ra2 31.Qc3 Qa4 32.Nd4 Rxb4 33.Rf1 Ra3 34.Qe1 Rb6
35.Bd1 Qa5 36.Qe2 Bd7 37.Qf3 Ra1 38.Nc2 Rc1 39.Rd4 Ba4 40.Qf5
g6 41.Qf4 0-1

[Event "IBM"]
[Site "Amsterdam"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "8"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "F Kuijpers"]
[ECO "E68"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "87"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nbd7 7.O-O
e5 8.e4 c6 9.b3 exd4 10.Nxd4 Nc5 11.Bb2 Re8 12.Qc2 Qb6 13.Rad1
Bg4 14.f3 Bd7 15.Qf2 Rad8 16.h3 Bc8 17.Nc2 a5 18.Bc1 Qc7
19.Nd4 Qe7 20.Rde1 Nfd7 21.Kh2 Qf6 22.Qc2 Nf8 23.Be3 Nfe6
24.Nce2 h6 25.Qd2 h5 26.Qxa5 h4 27.g4 Qe7 28.Kh1 Nxd4 29.Nxd4
Ne6 30.Nxe6 Bxe6 31.f4 Qf6 32.Qd2 Ra8 33.a4 Bf8 34.Bd4 Qe7
35.Bb2 f6 36.Qf2 g5 37.e5 fxe5 38.fxe5 dxe5 39.Bxe5 Bg7 40.Qb2
Bxe5 41.Qxe5 Qg7 42.a5 Rac8 43.Qc5 Rc7 44.Re5 1-0

[Event "NED-ch21"]
[Site "The Hague"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "5"]
[Result "0-1"]
[White "F Kuijpers"]
[Black "Jan Hein Donner"]
[ECO "C14"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "102"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.f4
O-O 8.Nf3 c5 9.dxc5 Nc6 10.Bd3 f6 11.Qe2 fxe5 12.fxe5 Nxc5
13.O-O Bd7 14.Rae1 Be8 15.Qe3 Nxd3 16.cxd3 Bg6 17.a3 d4
18.Nxd4 Rxf1+ 19.Rxf1 Qc5 20.Nce2 Rd8 21.b4 Qb6 22.Rf4 Ne7
23.Rf2 Nc6 24.Rf4 Bh5 25.g4 Bg6 26.Kf2 Ne7 27.Nc3 Rc8 28.Nde2
Bxd3 29.Qxb6 axb6 30.Rd4 Bxe2 31.Nxe2 Nd5 32.Rd2 Kf7 33.Nd4
Rc3 34.Nb5 Rh3 35.Ke1 Ke7 36.Rf2 g5 37.Kd2 Nf4 38.Kc2 Re3
39.h4 Rxe5 40.hxg5 Nh3 41.Rh2 Nxg5 42.Nc3 Re3 43.Rg2 Kf6 44.a4
Ke5 45.Nd1 Re4 46.Kb3 Kf4 47.Rd2 e5 48.Nc3 Re3 49.Rd7 Ne4
50.Rxh7 Rxc3+ 51.Kb2 Rc4 0-1

[Event "Amsterdam GAK"]
[Site "Amsterdam"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "F Kuijpers"]
[ECO "E54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "69"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 c5 6.Nf3 d5 7.O-O
dxc4 8.Bxc4 Bd7 9.Qe2 Bc6 10.Rd1 Nbd7 11.Bd2 Qe7 12.a3 Bxc3
13.Bxc3 Rfd8 14.b4 cxd4 15.Nxd4 Bd5 16.Nf5 Qf8 17.Bxd5 exd5
18.Rxd5 Nxd5 19.Bxg7 Qxg7 20.Nxg7 Kxg7 21.Qg4+ Kf8 22.Qf5 N5f6
23.g4 Re8 24.f4 h6 25.h4 Re7 26.g5 Ng8 27.Rd1 Nb6 28.h5 Rxe3
29.gxh6 Nxh6 30.Qg5 Re6 31.f5 Nxf5 32.Qxf5 Rae8 33.Rf1 R8e7
34.Qh7 Rd7 35.h6 1-0

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "16"]
[Result "0-1"]
[White "C B Van den Berg"]
[Black "Jan Hein Donner"]
[ECO "C07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "58"]

1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 Qxd5 5.Ngf3 cxd4 6.Bc4 Qd6
7.O-O Nc6 8.Nb3 a6 9.a4 Nf6 10.Re1 Qc7 11.Nbxd4 Nxd4 12.Qxd4
Bc5 13.Qh4 Be7 14.b3 Nd5 15.Bg5 Nb4 16.Re4 Nc6 17.Rae1 h6
18.Rg4 Bxg5 19.Rxg5 g6 20.Rg3 Qe7 21.Qf4 g5 22.Qe3 Bd7 23.Ne5
O-O-O 24.Qb6 Nxe5 25.Rxe5 Bc6 26.Bxa6 Rd1+ 27.Bf1 Qd6 28.Rge3
Rxf1+ 29.Kxf1 Bxg2+ 0-1

[Event "NED-ch21"]
[Site "The Hague"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "6"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "C B Van den Berg"]
[ECO "A79"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "128"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.e4
Bg7 8.Be2 O-O 9.O-O Re8 10.Nd2 Na6 11.f3 Nc7 12.a4 b6 13.Nc4
Ba6 14.Be3 Qd7 15.Re1 Rab8 16.Qd2 Bxc4 17.Bxc4 a6 18.Bf1 Rb7
19.Reb1 Qe7 20.Ra3 b5 21.axb5 Nxb5 22.Nxb5 axb5 23.Rba1 b4
24.Ra8 Nd7 25.R1a7 Rxa8 26.Rxa8+ Rb8 27.Ra7 Qd8 28.b3 Ne5
29.Qc2 h5 30.h3 Ra8 31.Qa2 Rxa7 32.Qxa7 Kh7 33.f4 Bh6 34.g3 h4
35.Kg2 hxg3 36.fxe5 Bxe3 37.Qxf7+ Kh6 38.e6 Bg5 39.Bd3 Qf6
40.Qxf6 Bxf6 41.e5 Be7 42.Kxg3 dxe5 43.Kf3 Kg7 44.Ke4 Kf6
45.h4 Bf8 46.Bc2 Bd6 47.Kf3 Bf8 48.Be4 Be7 49.Ke2 Bd8 50.Kd3
Ke7 51.Bxg6 Kd6 52.h5 Kxd5 53.Bf5 Bf6 54.h6 Kd6 55.Ke4 Bh8
56.Bg4 c4 57.bxc4 b3 58.Bd1 b2 59.Bc2 Kxe6 60.c5 Bf6 61.h7 Bh8
62.Bb1 Bg7 63.Ba2+ Kd7 64.Kd5 e4 1/2-1/2

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Aleksandar Matanovic"]
[ECO "E27"]
[WhiteElo "2500"]
[BlackElo "2500"]
[PlyCount "88"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 O-O 6. f3 d6
7. e4 e5 8. Ne2 Nbd7 9. Ng3 Re8 10. Be3 Nf8 11. Qd2 Qe7
12. Kf2 c5 13. Be2 Ng6 14. a4 Qc7 15. a5 Ne7 16. Bg5 Nd7
17. Bxe7 Rxe7 18. Nf5 Re8 19. dxe5 dxe5 20. Rhd1 Nf8 21. Nd6
Re7 22. Nb5 Qc6 23. Qd6 Re8 24. Qc7 Qf6 25. Qxc5 Ne6 26. Qe3
a6 27. Nd6 Re7 28. Kg1 Qg5 29. Qxg5 Nxg5 30. c5 Ne6 31. c6
bxc6 32. Nxc8 Rxc8 33. Bxa6 Ra8 34. Bc4 Nc5 35. a6 Rc7 36. Kf2
Kf8 37. Ke3 Ke7 38. g3 f6 39. f4 Rca7 40. Ra5 Nd7 41. Be2 h6
42. Rb1 g5 43. fxg5 hxg5 44. h4 gxh4 1-0

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "4"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Petar Trifunovic"]
[ECO "D43"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "46"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 Be7 6. e3 Nbd7
7. Bd3 dxc4 8. Bxc4 Nd5 9. Bxe7 Qxe7 10. Qc2 O-O 11. O-O Nxc3
12. Qxc3 b6 13. Rad1 Bb7 14. e4 c5 15. d5 exd5 16. Bxd5 Nf6
17. Bxb7 Qxb7 18. e5 Nd5 19. Qc4 Nb4 20. Rd6 Rad8 21. Rfd1 Nc6
22. Qd5 Rxd6 23. exd6 Nd8 1/2-1/2

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "6"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Gideon Stahlberg"]
[ECO "C14"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "79"]

1. d4 e6 2. e4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. Bxe7
Qxe7 7. Nf3 a6 8. Bd3 c5 9. dxc5 Nc6 10. Qe2 Nxc5 11. O-O b5
12. a3 Bb7 13. Qe3 Nd7 14. Ne2 f6 15. exf6 gxf6 16. Nfd4 Nxd4
17. Nxd4 Kf7 18. Rae1 Ne5 19. Be2 h5 20. f4 Nc6 21. Nxe6 Bc8
22. f5 Ne5 23. Nf4 Qa7 24. Qxa7+ Rxa7 25. Nxd5 h4 26. Rd1 Bb7
27. b3 Rc8 28. Rf2 Kg7 29. Nf4 Rxc2 30. Nh5+ Kf7 31. Bc4+ Rxc4
32. bxc4 bxc4 33. Rd6 Bc8 34. Rxf6+ Ke8 35. Rh6 Kd8 36. Rh8+
Kc7 37. Rh7+ Bd7 38. Re2 Kd6 39. Rh6+ Kd5 40. Nf6+ 1-0

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "8"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Borislav Milic"]
[ECO "E64"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "36"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 c5
7. h3 Nc6 8. Be3 cxd4 9. Nxd4 Bd7 10. Rc1 Rc8 11. b3 Qa5
12. Qd2 Nxd4 13. Bxd4 Bc6 14. O-O Bxg2 15. Kxg2 Ne4 16. Qe3
Bxd4 17. Qxd4 Nxc3 18. Rxc3 e5 1/2-1/2

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "10"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Kick Langeweg"]
[ECO "A61"]
[WhiteElo "2500"]
[BlackElo "2455"]
[PlyCount "83"]

1. d4 Nf6 2. c4 e6 3. Nc3 c5 4. d5 exd5 5. cxd5 d6 6. Nf3 g6
7. Nd2 Bg7 8. Nc4 O-O 9. Bg5 h6 10. Bh4 a6 11. a4 g5 12. Bg3
Ne8 13. e4 f5 14. exf5 Bxf5 15. Be2 b6 16. O-O Ra7 17. Bg4
Raf7 18. Bxf5 Rxf5 19. Qe2 Kh8 20. Rae1 Bd4 21. Qh5 R5f6
22. Ne4 Ng7 23. Qh3 Rg6 24. Bxd6 Rf5 25. Qg3 Nd7 26. Nc3 Bxc3
27. bxc3 Rxd5 28. Be7 Qg8 29. Qc7 Qb8 30. Qxb8+ Nxb8 31. Rd1
Rxd1 32. Rxd1 Nc6 33. Bd6 Nf5 34. Bc7 b5 35. axb5 axb5 36. Nd6
Nxd6 37. Bxd6 c4 38. Kf1 Re6 39. Bc5 Kh7 40. Rd7+ Kg6 41. Rb7
Re5 42. Be3 1-0

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "12"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Vasja Pirc"]
[ECO "A42"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "69"]

1. d4 d6 2. c4 g6 3. Nc3 Bg7 4. e4 Nd7 5. Be3 e5 6. Qd2 c6
7. Nf3 h6 8. g3 Ngf6 9. h3 Qe7 10. Bg2 Nb6 11. b3 g5 12. d5
cxd5 13. cxd5 Bd7 14. Nh2 O-O 15. O-O Rfc8 16. Rfc1 Qd8 17. f3
Be8 18. Bf2 Bf8 19. Nf1 Nbd7 20. Ne3 Nc5 21. Bf1 a6 22. Qb2 b6
23. b4 Nb7 24. Bd3 Nd7 25. Qe2 Nb8 26. Nc4 Nd7 27. Nb2 b5
28. a4 a5 29. Bxb5 axb4 30. Na2 Ndc5 31. Bxe8 Qxe8 32. Nxb4
Nb3 33. Rxc8 Qxc8 34. Ra3 Qc3 35. Na2 1-0

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "3"]
[Result "0-1"]
[White "Herman Pilnik"]
[Black "Jan Hein Donner"]
[ECO "A56"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "144"]

1. d4 Nf6 2. c4 c5 3. d5 d6 4. Nc3 g6 5. e4 Bg7 6. Be2 O-O
7. Nf3 e5 8. O-O Ne8 9. a3 a5 10. Rb1 Na6 11. Bd2 f5 12. Ne1
Nf6 13. f3 f4 14. Nd3 g5 15. g4 fxg3 16. hxg3 Nh5 17. Kg2 h6
18. Rh1 Nf6 19. Nf2 Nc7 20. Rh2 Rf7 21. g4 Nh7 22. Nh1 Nf8
23. Ng3 Ng6 24. Nf5 Bxf5 25. exf5 Nf4+ 26. Kh1 Ne8 27. Ne4 Nf6
28. Qc2 b6 29. Re1 Nxe4 30. Qxe4 Qf8 31. Bd1 a4 32. Bc2 Bf6
33. Kg1 Re7 34. Kf2 Raa7 35. Reh1 Bg7 36. Bc3 Ra8 37. Ke1 Qf6
38. Kd1 Rea7 39. Kc1 Re7 40. Kb1 Rea7 41. Ka2 Kf8 42. Rb1 Kg8
43. Bd2 Kf8 44. Bxf4 exf4 45. Qe6 Re7 46. Qxf6+ Bxf6 47. Rxh6
Kf7 48. Rbh1 Re2 49. Rg6 Rg8 50. Kb1 Rf2 51. Rh7+ Rg7
52. Rxf6+ Kxf6 53. Rh6+ Kf7 54. f6 Rg8 55. Bf5 Rf8 56. Be6+
Ke8 57. Rg6 Rxf3 58. f7+ Ke7 59. Rxg5 Rg3 60. Kc2 f3 61. Kd2
f2 62. Rf5 Rxg4 63. Rxf2 Rxc4 64. Rg2 b5 65. Kd3 Rh4 66. Re2
b4 67. axb4 Rxb4 68. Kc2 Rfb8 69. Kc1 Rb3 70. Re4 R8b4 71. Re2
a3 72. bxa3 Rb1+ 0-1

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "9"]
[Result "1-0"]
[White "Yuri Averbakh"]
[Black "Jan Hein Donner"]
[ECO "D37"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "81"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. cxd5 exd5 6. Bg5 c6
7. Qc2 g6 8. e3 Bf5 9. Bd3 Bxd3 10. Qxd3 O-O 11. O-O Re8
12. Bxf6 Bxf6 13. b4 Nd7 14. b5 Nb6 15. bxc6 bxc6 16. Rac1 Be7
17. Rc2 Bd6 18. Nb1 Rc8 19. Rfc1 Qf6 20. Nbd2 Rc7 21. g3 Rec8
22. Kg2 Qe7 23. e4 Bb4 24. h4 Qd8 25. e5 c5 26. dxc5 Rxc5
27. Rxc5 Rxc5 28. Rxc5 Bxc5 29. Nb3 Be7 30. Nbd4 Qc8 31. Qb5
Kf8 32. Nc6 Qb7 33. Nfd4 a6 34. Qa5 Ke8 35. Nxe7 Kxe7 36. Qc5+
Ke8 37. e6 Nc8 38. exf7+ Kxf7 39. Nc6 Kg7 40. Qd4+ Kh6 41. Qf6
1-0

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "14"]
[Result "0-1"]
[White "Tan Hiong Liong"]
[Black "Jan Hein Donner"]
[ECO "B52"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "70"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. O-O Nf6 6. Re1
Nc6 7. b3 e6 8. Bb2 Be7 9. d4 cxd4 10. Nxd4 d5 11. Nxc6 Qxc6
12. exd5 Nxd5 13. Nd2 Rd8 14. Nc4 Ne3 15. Nxe3 Rxd1 16. Raxd1
O-O 17. c4 Bc5 18. Nc2 Qb6 19. Bd4 Bxd4 20. Rxd4 Qa5 21. Rd3
Qxa2 22. Ne3 h5 23. g3 g6 24. Ng2 a5 25. Ne3 Qb2 26. Red1 Kg7
27. R1d2 Qe5 28. Rd4 b5 29. cxb5 Qxb5 30. R2d3 Rc8 31. Nc4 Rc5
32. Rd7 Rd5 33. R3xd5 exd5 34. Ne5 Kf6 35. f4 Qxb3 0-1

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "13"]
[Result "0-1"]
[White "O'Kelly"]
[Black "Jan Hein Donner"]
[ECO "D55"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "76"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. d4 Be7 5. Bg5 O-O 6. e3 b6
7. cxd5 Nxd5 8. Bxe7 Qxe7 9. Nxd5 exd5 10. Bd3 c5 11. dxc5
bxc5 12. Qc2 g6 13. Rc1 Na6 14. a3 c4 15. Be2 Bf5 16. Qc3 Nc5
17. Nd4 Nd3+ 18. Bxd3 Bxd3 19. Nc6 Qe4 20. Qe5 Rfe8 21. Qxe4
dxe4 22. Rc3 a5 23. a4 Ra6 24. Nd4 Rb6 25. Nb5 Re5 26. Ra3 h5
27. h4 Rf5 28. g3 Kg7 29. Rh2 Kf6 30. Kd2 Ke5 31. b3 Rbf6
32. Ke1 Kd5 33. Nd4 c3 34. Nxf5 Rxf5 35. Ra1 Kc5 36. Rd1 Rd5
37. f4 exf3 38. Rf2 Be2 0-1

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "5"]
[Result "0-1"]
[White "Erno Gereben"]
[Black "Jan Hein Donner"]
[ECO "E42"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "66"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nge2 d5 6. a3 Ba5
7. dxc5 dxc4 8. Qxd8+ Kxd8 9. Nd4 Bxc3+ 10. bxc3 Nbd7 11. Bxc4
Nxc5 12. O-O Bd7 13. Rd1 Na4 14. Ne2 Ke7 15. e4 Rhc8 16. Bd3
e5 17. Rb1 b6 18. Ba6 Rc7 19. f3 Nc5 20. Bb5 Be6 21. Ng3 a6
22. Bf1 Na4 23. Bd2 b5 24. c4 Bxc4 25. Bb4+ Nc5 26. Nf5+ Kf8
27. Bxc4 bxc4 28. Rbc1 a5 29. Bc3 Nfd7 30. Rb1 Na4 31. Bxa5
Rca7 32. Bb4+ Kg8 33. Rbc1 f6 0-1

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1/2-1/2"]
[White "T Van Scheltinga"]
[Black "Jan Hein Donner"]
[ECO "A04"]
[WhiteElo "2325"]
[BlackElo "2500"]
[PlyCount "57"]

1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. g3 Qa5+ 6. Nc3
Ne4 7. Bd2 Qb6 8. Nxe4 Qxd4 9. Qc2 e6 10. Bg2 d5 11. cxd5 exd5
12. Nc3 Be6 13. O-O Bb4 14. Rfd1 O-O 15. a3 Bxc3 16. Bxc3 Qc5
17. Qd2 Qe7 18. Bb4 Nxb4 19. Qxb4 Qxb4 20. axb4 Rfd8 21. e3
Kf8 22. Ra3 Rd7 23. Rda1 a6 24. b5 Rb8 25. Ra4 Rd6 26. bxa6
Rxa6 27. Rxa6 bxa6 28. Rxa6 Rxb2 29. h4 1/2-1/2

[Event "IBM"]
[Site "Amsterdam NED"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "5"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Moshe Czerniak"]
[ECO "A56"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "81"]

1.d4 Nf6 2.c4 c5 3.d5 g6 4.Nc3 d6 5.e4 Bg7 6.Be2 O-O 7.Nf3 e5
8.Bg5 h6 9.Bh4 Nbd7 10.O-O g5 11.Bg3 Nh5 12.Ne1 Nf4 13.Bg4 Nb6
14.Bxc8 Nxc8 15.Nc2 Ne7 16.Ne3 Qd7 17.f3 f5 18.Bf2 Rf7 19.Qc2
fxe4 20.Nxe4 Nf5 21.Nxf5 Qxf5 22.Rae1 Raf8 23.Be3 Qg6 24.Rf2
h5 25.Kh1 g4 26.fxg4 hxg4 27.Ref1 Bh6 28.Ng3 Qxc2 29.Rxc2 Ne2
30.Rxf7 Nxg3+ 31.hxg3 Kxf7 32.Bxh6 Rh8 33.Rf2+ Kg6 34.Kg1 Rxh6
35.Rf8 Kg5 36.Rf7 b6 37.Rxa7 Kf5 38.Re7 Rh8 39.Rd7 Rh6 40.Re7
Rh8 41.Rd7 1/2-1/2

[Event "NED-FRG m"]
[Site "The Netherlands"]
[Date "1963.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Wolfgang Unzicker"]
[ECO "E54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "100"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 c5 7.O-O
dxc4 8.Bxc4 b6 9.Qe2 Bb7 10.Rd1 cxd4 11.exd4 Nbd7 12.Bd3 Rc8
13.Bd2 Be7 14.Rac1 Nd5 15.Ba6 Nxc3 16.Bxc3 Bxa6 17.Qxa6 Nf6
18.Qxa7 Ra8 19.Qb7 Rxa2 20.Ne5 Bd6 21.Nc6 Qa8 22.Qxa8 Rfxa8
23.Ne5 Nd5 24.Nd3 Be7 25.g3 g5 26.Kg2 Bf6 27.h3 R8a4 28.Ne5 b5
29.Rb1 Ra7 30.Kf3 Rc7 31.Rbc1 Ra4 32.Ke4 Bg7 33.Bd2 f5+ 34.Kd3
Bxe5 35.dxe5 Rd7 36.Ke2 Re4+ 37.Kf3 h6 38.Rc5 b4 39.Rb5 Kf7
40.Rc1 Rxe5 41.Bxb4 g4+ 42.hxg4 fxg4+ 43.Kg2 Ne3+ 44.fxe3 Rxb5
45.Bc3 Kg6 46.Ra1 Rd3 47.Kf2 Rh5 48.Ke2 Rd7 49.e4 Rf7 50.Ra6
Rf3 0-1

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Borislav Ivkov"]
[ECO "A56"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "59"]

1.d4 Nf6 2.c4 c5 3.d5 d6 4.Nc3 g6 5.e4 Bg7 6.Be2 O-O 7.Nf3 e5
8.O-O Ng4 9.Ng5 Nf6 10.f4 exf4 11.Bxf4 Ne8 12.Qd2 Nd7 13.Rae1
Qe7 14.Nd1 a6 15.b3 Nc7 16.Nf2 Ne5 17.Nf3 b5 18.Nxe5 Bxe5
19.Bg4 Ne8 20.Bxc8 Rxc8 21.Nd3 Bd4+ 22.Kh1 bxc4 23.bxc4 f6
24.Nb4 cxb4 25.Qxd4 Rf7 26.Bd2 a5 27.a3 Qa7 28.Qd3 Qa6 29.axb4
axb4 30.Bxb4 1/2-1/2

[Event "Beverwijk (21.01.64)"]
[Site "11"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Paul Keres"]
[ECO "D71"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "62"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d5 5.cxd5 Nxd5 6.e4 Nb4 7.a3
N4c6 8.d5 Nd4 9.Nc3 O-O 10.Nge2 c5 11.O-O e5 12.Be3 Na6 13.Nc1
f5 14.f4 fxe4 15.Bxe4 Bf5 16.Bxf5 Nxf5 17.Bf2 exf4 18.gxf4 Qd6
19.N1e2 Rad8 20.Qd3 Bxc3 21.Nxc3 Qxf4 22.Rad1 Rfe8 23.Rfe1 Nd4
24.Kg2 Rxe1 25.Rxe1 Nc7 26.Bg3 Qf7 27.d6 Nd5 28.Rf1 Qe6 29.Re1
Qxe1 30.Nxd5 Qe2+ 31.Qxe2 Nxe2 0-1

[Event "Havana Cap-mem"]
[Site "08"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Ludek Pachman"]
[ECO "E40"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "77"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 Nc6 5.Nf3 O-O 6.Qc2 d6 7.Bd2
e5 8.dxe5 Nxe5 9.Nxe5 dxe5 10.a3 Bxc3 11.Bxc3 Qe7 12.Be2 c5
13.O-O b6 14.Rae1 Bb7 15.f4 Be4 16.Bd3 Bxd3 17.Qxd3 e4 18.Qc2
Rad8 19.Rd1 h6 20.h3 Rxd1 21.Rxd1 Rd8 22.Kh2 Rxd1 23.Qxd1 Qe6
24.Qd8+ Kh7 25.b3 b5 26.Bxf6 gxf6 27.cxb5 Qxb3 28.Qxf6 Kg8
29.Qxh6 c4 30.f5 Qxb5 31.Qg5+ Kf8 32.Qd8+ Kg7 33.Qd4+ f6
34.Qxa7+ Kh6 35.Qf7 Qe5+ 36.Kg1 Qa1+ 37.Kf2 Qb2+ 38.Kg3 Qe5+
39.Kg4 1-0

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Lajos Portisch"]
[Black "Jan Hein Donner"]
[ECO "E54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "91"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Nf3 O-O 6.Bd3 d5 7.O-O
dxc4 8.Bxc4 b6 9.a3 cxd4 10.axb4 dxc3 11.Qxd8 Rxd8 12.bxc3 Bb7
13.Be2 Nc6 14.Bb2 a5 15.b5 Nb8 16.Rfd1 Nbd7 17.c4 Nc5 18.Ne5
Nfe4 19.f3 Nd2 20.Nc6 Rd7 21.Nd4 e5 22.Rxd2 exd4 23.Rxd4 Re7
24.Ra3 Re6 25.Kf2 f6 26.Rd1 Rc8 27.Bd4 Rc7 28.Bxc5 Rxc5
29.Rad3 Bc8 30.Rd5 Rc7 31.c5 bxc5 32.Rd8+ Kf7 33.Bc4 Ke7
34.Bxe6 Bxe6 35.Ra8 Rb7 36.Rxa5 Bb3 37.Rda1 Kd6 38.Ke1 Kd5
39.Rc1 c4 40.Kd2 Kc5 41.Kc3 Rd7 42.b6 Kxb6 43.Rca1 Rd3+ 44.Kb4
Rxe3 45.Ra7 Kc6 46.Rxg7 1-0

[Event "Havana Cap-mem"]
[Site "20"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Karl Robatsch"]
[Black "Jan Hein Donner"]
[ECO "B15"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ exf6 6.Bc4 Bd6
7.Qf3 O-O 8.Ne2 Re8 9.O-O Nd7 10.Bf4 Nb6 11.Bd3 Bf8 12.c4 c5
13.Nc3 Be6 14.d5 Bd7 15.Ne4 Bf5 16.Rae1 Qd7 17.Bd2 Bg6 18.b3
Qd8 19.Bc3 Nd7 20.Bb1 Bxe4 21.Rxe4 Bd6 22.Rfe1 Rxe4 23.Qxe4 g6
24.f4 Qc7 25.g3 Rb8 26.h4 b6 27.h5 Rd8 28.Kg2 Qb8 29.Qe2 Bf8
30.Qg4 Bg7 31.hxg6 hxg6 32.Re7 Qd6 33.Re3 Qb8 34.Re1 f5 35.Qf3
Bxc3 36.Qxc3 Qd6 37.Qe3 a5 38.g4 fxg4 39.f5 Nf8 40.Qg5 f6
41.Qxg4 1/2-1/2

[Event "Havana Capablanca mem"]
[Site "Havana Capablanca mem"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "18"]
[Result "1-0"]
[White "Mark Taimanov"]
[Black "Jan Hein Donner"]
[ECO "D54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "93"]

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.Bg5 Be7 5.e3 O-O 6.Rc1 h6 7.Bh4
Ne4 8.Bxe7 Qxe7 9.Qc2 c6 10.Bd3 Nxc3 11.Qxc3 dxc4 12.Bxc4 b6
13.Nf3 Bb7 14.O-O c5 15.dxc5 Rc8 16.cxb6 Bxf3 17.gxf3 Qg5+
18.Kh1 Qh5 19.Rg1 Qxf3+ 20.Rg2 g6 21.e4 Qxc3 22.Rxc3 axb6
23.Rxg6+ Kh7 24.Rf6 Ra7 25.e5 Rac7 26.b3 Nc6 27.f4 Na5
28.Rxf7+ Rxf7 29.Bd3+ Kg7 30.Rxc8 Rxf4 31.Rc7+ Kf8 32.Kg1 Rd4
33.Bf1 h5 34.Rc3 Ke7 35.a3 Nb7 36.Rc7+ Rd7 37.Rc6 Nc5 38.Rxb6
Rd5 39.b4 Nd7 40.Rb5 Nxe5 41.Rxd5 exd5 42.Kf2 d4 43.h4 Kf6
44.Bb5 Ke6 45.Be8 Nc4 46.a4 Nb2 47.Ke2 1-0

[Event "Havana Cap-mem"]
[Site "05"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Wolfgang Uhlmann"]
[Black "Jan Hein Donner"]
[ECO "D37"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "79"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.cxd5 exd5 6.Bg5 c6 7.Qc2
g6 8.e3 Bf5 9.Bd3 Bxd3 10.Qxd3 O-O 11.Bxf6 Bxf6 12.b4 a6
13.O-O Be7 14.Rab1 Nd7 15.Rfc1 Bd6 16.a4 Nf6 17.b5 axb5
18.axb5 Ra3 19.Qc2 Qa8 20.bxc6 bxc6 21.g3 Rc8 22.Ne5 c5 23.Nb5
Ra2 24.Qxa2 Qxa2 25.Nxd6 Rc7 26.dxc5 Rxc5 27.Rb8+ Kg7 28.Rxc5
Qa1+ 29.Kg2 Qxe5 30.Rd8 Qe7 31.Rcc8 h5 32.Ne8+ Nxe8 33.Rxe8
Qb7 34.Rcd8 f5 35.Rg8+ Kh7 36.Rb8 Qc6 37.Rgc8 Qe6 38.Rc7+ Kh6
39.Rh8+ Kg5 40.f4 1-0

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Miroslav Filip"]
[Black "Jan Hein Donner"]
[ECO "D56"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "52"]

1.c4 Nf6 2.Nc3 e6 3.Nf3 d5 4.d4 Be7 5.Bg5 O-O 6.e3 h6 7.Bh4
Ne4 8.Bxe7 Qxe7 9.Qc2 Nxc3 10.Qxc3 c6 11.Bd3 dxc4 12.Bxc4 b6
13.O-O Bb7 14.Be2 Rc8 15.Rac1 Nd7 16.Rfd1 c5 17.Qa3 Kf8 18.Ba6
Bxf3 19.gxf3 Rc7 20.f4 g5 21.fxg5 Qxg5+ 22.Kf1 Qh5 23.Kg1 Qg5+
24.Kf1 Qh5 25.Kg1 Qg5+ 26.Kf1 Qh5 1/2-1/2

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Milko Bobotsov"]
[Black "Jan Hein Donner"]
[ECO "D55"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "86"]

1.c4 Nf6 2.Nc3 e6 3.Nf3 d5 4.d4 Be7 5.Bg5 O-O 6.e3 b6 7.cxd5
Nxd5 8.Bxe7 Qxe7 9.Nxd5 exd5 10.Bd3 c5 11.dxc5 bxc5 12.O-O Be6
13.Rc1 Nd7 14.Qc2 g6 15.Rfd1 Rab8 16.Rd2 Rb4 17.Qc3 Rfb8 18.b3
a5 19.Bc2 Qd6 20.Ng5 Qb6 21.e4 d4 22.Qg3 c4 23.Nxe6 fxe6
24.bxc4 Rxc4 25.Rcd1 Rbc8 26.Bb3 Rb4 27.Qg4 Rc6 28.e5 a4
29.Bd5 Nxe5 30.Qg3 Rd6 31.Be4 Qc5 32.h4 d3 33.Bxd3 Rbd4 34.Qe3
Qd5 35.Be2 Rxd2 36.Rxd2 Qxd2 37.Qxe5 Qd4 38.Qg3 Kg7 39.h5 e5
40.Bg4 Rf6 41.Qh4 Qf4 42.f3 gxh5 43.Qxh5 Rh6 0-1

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Bent Larsen"]
[ECO "A99"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "97"]

1.d4 f5 2.Nf3 Nf6 3.g3 e6 4.Bg2 Be7 5.O-O O-O 6.b3 d6 7.c4 Qe8
8.Nc3 a5 9.Ba3 Na6 10.Re1 Bd7 11.Nd2 Rb8 12.e4 fxe4 13.Ndxe4
Nxe4 14.Nxe4 b5 15.Qd2 b4 16.Bb2 Qf7 17.Qe2 Qf5 18.f4 a4
19.Rad1 Rfe8 20.Nf2 a3 21.Ba1 Bf8 22.Be4 Qf7 23.Nh3 h6 24.Qd3
Red8 25.Bg6 Qf6 26.d5 e5 27.Nf2 Nc5 28.Qc2 Be8 29.Bxe8 Rxe8
30.Ng4 Qf7 31.fxe5 dxe5 32.Nxe5 Qh5 33.Qe2 Qf5 34.Qf1 Qh5
35.Kg2 Bd6 36.Qf3 Qxf3+ 37.Nxf3 Rf8 38.Nd4 Rf7 39.Ne6 Re8
40.Nxc5 Rxe1 41.Rxe1 Bxc5 42.Re2 h5 43.h4 Kh7 44.Be5 Re7
45.Kf3 Rf7+ 46.Bf4 Bd6 47.Re6 Kg8 48.Ke3 Rd7 49.Kd4 1-0

[Event "IBM"]
[Site "Amsterdam"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1/2-1/2"]
[White "Bent Larsen"]
[Black "Jan Hein Donner"]
[ECO "B40"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "95"]

1.e4 c5 2.Nf3 e6 3.Nc3 a6 4.g3 b5 5.Bg2 Bb7 6.O-O b4 7.Na4
Bxe4 8.d4 cxd4 9.Qxd4 Nf6 10.Be3 Nc6 11.Qd2 Be7 12.Rfd1 d5
13.c4 O-O 14.Rac1 dxc4 15.Nb6 Rb8 16.Qe1 Qc7 17.Nxc4 Qb7
18.Bg5 Bd5 19.Ne3 Rfd8 20.Nxd5 Nxd5 21.Qe4 Rbc8 22.Bf1 h6
23.Bxe7 Ncxe7 24.Bd3 g6 25.Rxc8 Qxc8 26.Ne5 a5 27.Qf3 Rf8
28.h4 Qc7 29.Re1 Kg7 30.h5 g5 31.Ng4 Ng8 32.Re5 Qc1+ 33.Kg2
Qxb2 34.Rxd5 exd5 35.Qf5 Re8 36.Nxh6 Nxh6 37.Qxg5+ Kf8
38.Qxh6+ Qg7 39.Qb6 Qe5 40.Qxa5 Qd4 41.Qb5 Re6 42.Bf5 Rf6
43.g4 Kg7 44.Qb8 Rh6 45.Qh2 Rf6 46.Qg3 Kf8 47.Qb8+ Kg7 48.Qg3
1/2-1/2

[Event "IBM"]
[Site "Amsterdam"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "3"]
[Result "1-0"]
[White "F Kuijpers"]
[Black "Jan Hein Donner"]
[ECO "B41"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "95"]

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nd2 d6 6.Bd3 Nf6 7.O-O
Be7 8.Kh1 e5 9.Ne2 O-O 10.f4 Nc6 11.Nf3 Bg4 12.Qe1 Qc7 13.Qg3
Bxf3 14.Qxf3 Rad8 15.Ng3 g6 16.f5 Nd4 17.Qd1 d5 18.fxg6 hxg6
19.exd5 Rxd5 20.Bg5 Rd6 21.c3 Nc6 22.Qe2 Kg7 23.Rf2 Qd7 24.Bf5
Qd8 25.Raf1 Nh7 26.Be3 gxf5 27.Nxf5+ Kh8 28.Nxd6 Qxd6 29.Rf5
Qg6 30.Qf3 f6 31.Qd5 Rd8 32.Qc4 Rg8 33.Qe2 Bf8 34.R5f2 Bg7
35.Qc4 Rd8 36.Bb6 Rd7 37.Qe6 Nf8 38.Qh3+ Kg8 39.Bc5 Qd3 40.Qg4
Qg6 41.Qc4+ Qf7 42.Qg4 Ne6 43.Rxf6 Qxf6 44.Rxf6 Nxc5 45.Rf1
Re7 46.h4 e4 47.h5 Kh8 48.Qc8+ 1-0

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "11"]
[Result "1/2-1/2"]
[White "Klaus V Darga"]
[Black "Jan Hein Donner"]
[ECO "B17"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "59"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Bc4 Ngf6 6.Ng5 e6
7.Qe2 Nb6 8.Bb3 c5 9.dxc5 Bxc5 10.N1f3 h6 11.Ne4 Be7 12.O-O
O-O 13.Bf4 Nbd5 14.Nxf6+ Bxf6 15.Be5 Bxe5 16.Qxe5 Nf6 17.Rad1
Bd7 18.Rd4 Qb8 19.Qe2 Rc8 20.Ne5 Be8 21.Ng4 Nxg4 22.Rxg4 Rc5
23.Re1 Qc7 24.Rc4 Rd8 25.Rxc5 Qxc5 26.Rd1 Rxd1+ 27.Qxd1 Qc7
28.Qd4 Qd7 29.Qxd7 Bxd7 30.f4 1/2-1/2

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Klaus V Darga"]
[Black "Jan Hein Donner"]
[ECO "B11"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "41"]

1.e4 c6 2.Nc3 d5 3.Nf3 Bg4 4.h3 Bxf3 5.Qxf3 Nf6 6.d3 e6 7.Bd2
Nbd7 8.g4 g6 9.O-O-O Bg7 10.h4 h5 11.g5 Ng4 12.Bh3 Qb6 13.Rde1
Nge5 14.Qg3 dxe4 15.Rxe4 c5 16.Rhe1 Nc6 17.Rxe6+ fxe6 18.Rxe6+
Kf7 19.Qf4+ Kg8 20.Rxg6 Qd8 21.Be6+ 1-0

[Event "IBM"]
[Site "Amsterdam"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "7"]
[Result "0-1"]
[White "Dirk Daniel Van Geet"]
[Black "Jan Hein Donner"]
[ECO "A00"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "68"]

1.Nc3 c5 2.g4 d5 3.Bg2 e6 4.d3 Nc6 5.Bf4 Nge7 6.Bg3 Ng6 7.Nf3
Bd6 8.Qd2 h5 9.gxh5 Rxh5 10.Nb5 Bb8 11.c4 d4 12.O-O-O a6
13.Na3 e5 14.e3 Kf8 15.exd4 exd4 16.h4 Bg4 17.Rde1 Qf6 18.Ng5
Bf4 19.Bxf4 Qxf4 20.Be4 Nce5 21.Nb1 Re8 22.Kc2 Bd7 23.Bxb7 f6
24.Ne4 Nf3 25.Qxf4 Nxe1+ 26.Rxe1 Nxf4 27.Rg1 a5 28.Nbd2 a4
29.Nf3 Rb8 30.Ba6 Rb6 31.Bb5 Bxb5 32.cxb5 Rxb5 33.Rg4 Nd5
34.a3 f5 0-1

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Iivo Nei"]
[Black "Jan Hein Donner"]
[ECO "A19"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "63"]

1.c4 Nf6 2.Nc3 e6 3.e4 c5 4.e5 Ng8 5.d4 cxd4 6.Qxd4 Nc6 7.Qe4
d6 8.Nf3 Qa5 9.Bd2 dxe5 10.Nb5 Bb4 11.O-O-O Bxd2+ 12.Rxd2 Nf6
13.Qh4 O-O 14.Nc3 Rd8 15.Bd3 Bd7 16.Re1 Be8 17.g4 h6 18.g5
hxg5 19.Nxg5 Nb4 20.Re3 Nxd3+ 21.Rexd3 Rxd3 22.Rxd3 Rd8 23.Rh3
Kf8 24.Qh8+ Ke7 25.Qxg7 e4 26.Rh8 Qf5 27.Qf8+ Kd7 28.Nxf7 Qf4+
29.Kb1 Rc8 30.Qg7 Kc6 31.Rh6 Nd7 32.Rxe6+ 1-0

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "13"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Hector Decio Rossetto"]
[ECO "A40"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "60"]

1.d4 Nc6 2.d5 Ne5 3.e4 e6 4.Nf3 Nxf3+ 5.Qxf3 Qf6 6.Nc3 Qxf3
7.gxf3 Bb4 8.Bd2 Nf6 9.Nb5 Bxd2+ 10.Kxd2 Kd8 11.d6 cxd6
12.Nxd6 Ke7 13.e5 Ne8 14.Nxe8 Rxe8 15.Rg1 g6 16.Rg4 d6
17.exd6+ Kxd6 18.Ke3 Bd7 19.Rd1+ Ke7 20.Rxd7+ Kxd7 21.Bb5+ Kc7
22.Bxe8 Rxe8 23.Rd4 Re7 24.Ke4 f6 25.Rd3 Kc6 26.Rd8 e5 27.Ke3
f5 28.Kd3 Kc5 29.Ke3 Kc6 30.Kd3 Kc5 1/2-1/2

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "C B Van den Berg"]
[Black "Jan Hein Donner"]
[ECO "B18"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "30"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.Bc4 e6
7.N1e2 Qh4 8.Bf4 Nf6 9.Qd2 h6 10.O-O Nbd7 11.Bb3 Be7 12.a4 a5
13.Bc7 b6 14.Nf4 Bh7 15.Ngh5 Nxh5 0-1

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Lajos Portisch"]
[ECO "D35"]
[WhiteElo "2500"]
[BlackElo "2635"]
[PlyCount "72"]

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5 exd5 5. Bg5 c6 6. e3 h6
7. Bh4 Be7 8. Qc2 O-O 9. Bd3 Nbd7 10. Nf3 Re8 11. O-O Ne4
12. Bxe7 Qxe7 13. b4 Ndf6 14. b5 c5 15. dxc5 Nxc5 16. Rac1
Nce4 17. Qb2 Be6 18. Rc2 Rac8 19. Rfc1 Nc5 20. Be2 Bg4 21. Rd2
Nce4 22. Rdc2 Nxf2 23. Kxf2 Bf5 24. Rd2 Ng4+ 25. Kf1 Qc5
26. Nd4 Nxe3+ 27. Kg1 Be4 28. Bf1 Qb6 29. Na4 Rxc1 30. Qxc1
Qa5 31. Qc3 Qxa4 32. Qxe3 Rc8 33. Bd3 Rc3 34. Nb3 Qb4 35. Qe2
Bxd3 36. Rxd3 Qxb5 1/2-1/2

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "4"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Gideon Stahlberg"]
[ECO "A07"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "75"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 c6 6. b3 d6
7. Bb2 e5 8. Nc3 Re8 9. d3 Nbd7 10. b4 Nf8 11. b5 Ne6 12. Nd2
d5 13. Nb3 d4 14. Ne4 Nxe4 15. Bxe4 cxb5 16. cxb5 Ng5 17. Bg2
Bh3 18. a4 Bxg2 19. Kxg2 a6 20. bxa6 bxa6 21. Nd2 e4 22. h4
exd3 23. exd3 Qd5+ 24. Kg1 Ne6 25. Qf3 Qxf3 26. Nxf3 Rab8
27. Ba3 Rb3 28. Rfd1 Rc8 29. Ne1 Rcb8 30. Kf1 a5 31. Bc1 Bf8
32. Bd2 Bb4 33. Bxb4 R8xb4 34. Nc2 Rb8 35. Na3 Nc5 36. Nc4 Ra8
37. Rab1 Rc3 38. Rb5 1/2-1/2

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "6"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Rene Letelier Martner"]
[ECO "A79"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "121"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6
7. e4 Bg7 8. Be2 O-O 9. O-O Re8 10. Nd2 Na6 11. f3 Nc7 12. a4
Nd7 13. Nc4 Ne5 14. Ne3 b6 15. Re1 Rb8 16. f4 Nd7 17. Nc4 Bd4+
18. Kh1 Nf6 19. Bf3 Ba6 20. Na3 Bf2 21. Bd2 Bd3 22. e5 dxe5
23. Rxe5 Rxe5 24. fxe5 Nfxd5 25. Bxd5 Nxd5 26. Qf3 Nxc3
27. Bxc3 Bh4 28. Rd1 c4 29. Nxc4 Bxc4 30. Rxd8+ Rxd8 31. h3
Be6 32. Bb4 h5 33. Qf4 Rd1+ 34. Kh2 g5 35. Qf3 Rd4 36. Be7 Rd2
37. Qc3 Rf2 38. Qd4 Rf4 39. Qd8+ Kh7 40. Bf6 Rf2 41. Qd3+ Kh6
42. Kg1 Rxb2 43. Be7 Kg7 44. Bf6+ Kh6 45. Qd8 Rb1+ 46. Kh2 Rb3
47. g4 hxg4 48. hxg4 Rb2+ 49. Kh1 Bxg4 50. Qh8+ Kg6 51. Qg8+
Kf5 52. Qc8+ Kg6 53. Qxg4 Rf2 54. Qd7 Rf1+ 55. Kg2 Rf2+
56. Kg1 Rf4 57. Qe8 Bf2+ 58. Kg2 Bc5 59. Qg8+ Kf5 60. Qxg5+
Ke4 61. Qh5 1-0

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "10"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Carlos Bielicki"]
[ECO "E64"]
[WhiteElo "2500"]
[BlackElo "2365"]
[PlyCount "61"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 c5
7. d5 e5 8. dxe6 Bxe6 9. Ng5 Bxc4 10. Bxb7 Nbd7 11. Bxa8 Qxa8
12. O-O d5 13. Qc2 Re8 14. Re1 h6 15. Nf3 Ba6 16. a4 Qc6
17. Nb5 Bb7 18. Nxa7 Qe6 19. Nb5 d4 20. Nc7 Qh3 21. Nxe8 Ne5
22. Nxf6+ Bxf6 23. Ra3 Ng4 24. e4 dxe3 25. Rexe3 Bd4 26. Qe2
Nxh2 27. Rad3 Bd5 28. Rxd4 cxd4 29. Re4 Nxf3+ 30. Qxf3 Qc8
31. Bd2 1-0

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "15"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Hugo Santa Cruz"]
[ECO "D08"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "57"]

1. d4 d5 2. c4 e5 3. dxe5 d4 4. Nf3 Nc6 5. a3 a5 6. g3 Bg4
7. Nbd2 Qd7 8. Bg2 Rd8 9. O-O Be7 10. Qa4 h5 11. Qb5 Kf8
12. Nb3 b6 13. Rd1 f6 14. exf6 Bxf6 15. Bg5 Nge7 16. Bxf6 gxf6
17. Rd2 Nf5 18. Nh4 Nxh4 19. Bxc6 Qg7 20. Nxd4 Rd6 21. c5 Rxd4
22. Rxd4 Ng6 23. cxb6 cxb6 24. Qxb6 Qe7 25. Rad1 Ne5 26. Qd8+
Qxd8 27. Rxd8+ Kg7 28. Rxh8 Kxh8 29. Bb5 1-0

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "17"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Larry Melvyn Evans"]
[ECO "D43"]
[WhiteElo "2500"]
[BlackElo "2530"]
[PlyCount "50"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 Nf6 5. Bg5 h6 6. Bxf6 Qxf6
7. Qb3 Nd7 8. e4 dxe4 9. Nxe4 Qf4 10. Bd3 Be7 11. O-O O-O
12. Rfe1 Rd8 13. Rad1 Qc7 14. Bf1 b6 15. g3 Bb7 16. Bg2 Rac8
17. Nc3 Bf8 18. Qc2 a6 19. a3 c5 20. d5 exd5 21. Nxd5 Bxd5
22. Rxd5 Nf6 23. Rdd1 Nd7 24. Rd5 Nf6 25. Rdd1 Nd7 1/2-1/2

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "19"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Vasily Smyslov"]
[ECO "E62"]
[WhiteElo "2500"]
[BlackElo "2620"]
[PlyCount "144"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 d6 5. Nc3 O-O 6. Nf3 Nc6
7. d5 Na5 8. b3 c6 9. Bb2 cxd5 10. cxd5 Qb6 11. Qd2 Bd7
12. O-O Rac8 13. Nd4 Rc7 14. Rfc1 Rfc8 15. Nd1 Rxc1 16. Rxc1
Rxc1 17. Qxc1 Qc5 18. Nc2 Qc8 19. Qd2 b6 20. e4 Nb7 21. Nd4
Nc5 22. f3 Qa6 23. Bc3 Qd3 24. Qxd3 Nxd3 25. Bf1 Nc1 26. Nc6
Nxa2 27. Bd2 e6 28. Bc4 exd5 29. exd5 a5 30. Be3 b5 31. Bxb5
Nxd5 32. Ne7+ Kf8 33. Nxd5 Bxb5 34. Kf2 Nb4 35. Nxb4 axb4
36. Ke1 Bc6 37. Ke2 Bd5 38. Bd2 Bxb3 39. Bxb4 Ke7 40. Nc3 Bc4+
41. Ke3 Kd7 42. Ne2 Bxe2 43. Kxe2 Be5 44. Be1 Ke6 45. h3 Kf5
46. Kf2 h5 47. Bd2 Ke6 48. g4 Kd5 49. Ke2 Kc4 50. Be1 Bf4
51. Ba5 d5 52. Be1 d4 53. Ba5 Bd6 54. Be1 Bb4 55. Bh4 Kc3
56. Be1+ Kb3 57. Bf2 Kc4 58. Bh4 Bf8 59. Kd2 Bh6+ 60. Kc2 d3+
61. Kd1 Kd4 62. Bf2+ Kc3 63. Bb6 d2 64. Bf2 Kd3 65. Bb6 Bf4
66. Bf2 Be5 67. Bg1 h4 68. Bf2 Bc3 69. Bg1 Bd4 70. Bxd4 Kxd4
71. Kxd2 Ke5 72. Ke3 g5 0-1

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "21"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Silvino Garcia-Martinez"]
[ECO "D93"]
[WhiteElo "2500"]
[BlackElo "2470"]
[PlyCount "75"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Bf4 O-O 6. e3 c5
7. Be2 Be6 8. Ng5 Ne4 9. Ngxe4 dxe4 10. d5 Bc8 11. Nxe4 Bxb2
12. Rb1 Bg7 13. O-O Bf5 14. Bd3 b6 15. g4 Bc8 16. Bg3 Na6
17. Be2 e6 18. Nd6 exd5 19. cxd5 Nb4 20. Qd2 Ba6 21. Rfd1 Bc3
22. Qxc3 Bxe2 23. Rd2 Bxg4 24. a3 Na6 25. Qc4 Bc8 26. e4 Nc7
27. e5 Ne8 28. Nxc8 Rxc8 29. Rbd1 Ng7 30. e6 Qe7 31. Re1 fxe6
32. dxe6 Rcd8 33. Bh4 g5 34. Rd7 Rxd7 35. exd7+ Qf7 36. Qxf7+
Kxf7 37. Bxg5 Ne6 38. Rxe6 1-0

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "12"]
[Result "1/2-1/2"]
[White "Nikola Padevsky"]
[Black "Jan Hein Donner"]
[ECO "B18"]
[WhiteElo "2460"]
[BlackElo "2500"]
[PlyCount "57"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Bc4 e6
7. N1e2 Qh4 8. Be3 Nf6 9. Qd2 Ne4 10. Nxe4 Qxe4 11. Bb3 Qxg2
12. O-O-O Bd6 13. h4 Qf3 14. Bf4 Be7 15. Bg3 Nd7 16. Nf4 Nf6
17. Qa5 Ne4 18. Nxg6 hxg6 19. Qc7 Nxg3 20. fxg3 Bf6 21. Rhf1
Qe3+ 22. Kb1 O-O 23. Qxb7 Qxg3 24. Qxc6 Rac8 25. Qa6 Rc7
26. Qe2 Rcc8 27. Qa6 Rc7 28. Qe2 Rcc8 29. Qa6 1/2-1/2

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "3"]
[Result "1-0"]
[White "Eleazar Jimenez-Zerquera"]
[Black "Jan Hein Donner"]
[ECO "B17"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "65"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Nf3 Ngf6 6. Nxf6+
Nxf6 7. Bc4 g6 8. Ne5 Nd5 9. Qf3 Be6 10. O-O Bg7 11. Bb3 O-O
12. c4 Nb6 13. Qc3 Nd7 14. Nd3 c5 15. Be3 Bf5 16. Rfd1 Qc7
17. Ne1 cxd4 18. Bxd4 e5 19. Be3 Rac8 20. Rac1 b6 21. h3 Be6
22. c5 Bxb3 23. Qxb3 Nxc5 24. Qa3 Qe7 25. Nd3 Rfd8 26. Nxc5
Rxd1+ 27. Rxd1 bxc5 28. Qa4 Rc7 29. Qb5 h5 30. Rd5 Bf8 31. Qb8
Kg7 32. Rd8 Rb7 33. Qa8 1-0

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "7"]
[Result "1/2-1/2"]
[White "Robert Wade"]
[Black "Jan Hein Donner"]
[ECO "E42"]
[WhiteElo "2310"]
[BlackElo "2500"]
[PlyCount "80"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nge2 d5 6. a3 Ba5
7. cxd5 Nxd5 8. Bd2 cxd4 9. Nxd5 Qxd5 10. Bxa5 Qxa5+ 11. b4
Qg5 12. h4 Qe7 13. Nxd4 O-O 14. Qc2 e5 15. Qe4 f5 16. Qd5+ Kh8
17. Nf3 Nc6 18. Ng5 e4 19. Rd1 h6 20. Qd6 Qxd6 21. Rxd6 Ne5
22. Nh3 Bd7 23. Nf4 Rfd8 24. Be2 Ba4 25. Rd4 Rxd4 26. exd4 Nc6
27. d5 Ne5 28. Kd2 Rc8 29. Rc1 Rxc1 30. Kxc1 g6 31. Kb2 Bd7
32. Kc3 Kg7 33. Kd4 Kf6 34. h5 g5 35. Ng6 Nf7 36. g3 b6
37. Nf8 Bc8 38. Ng6 Bd7 39. Nf8 Bc8 40. Ng6 Bd7 1/2-1/2

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "9"]
[Result "1/2-1/2"]
[White "Eldis Cobo Arteaga"]
[Black "Jan Hein Donner"]
[ECO "D93"]
[WhiteElo "2420"]
[BlackElo "2500"]
[PlyCount "132"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Bf4 O-O 6. Rc1 c6
7. e3 Qa5 8. Qd2 Nbd7 9. cxd5 Nxd5 10. Nxd5 Qxd5 11. Bc4 Qh5
12. O-O e5 13. dxe5 Nxe5 14. Nxe5 Bxe5 15. Be2 Qf5 16. Rc5 f6
17. Bxe5 fxe5 18. Qd6 Re8 19. Bc4+ Be6 20. Rxe5 Qxe5 21. Qxe5
Bxc4 22. Qc7 Bxf1 23. Kxf1 Rab8 24. g4 Rec8 25. Qd7 c5 26. h4
b5 27. h5 gxh5 28. gxh5 h6 29. Qxa7 b4 30. b3 Ra8 31. Qd7 Rf8
32. Qe6+ Rf7 33. f4 Rxa2 34. f5 Raa7 35. Ke2 Rac7 36. Kd3
Rcd7+ 37. Ke2 Rc7 38. Kd3 Rcd7+ 39. Kc4 Rde7 40. Qc8+ Kg7
41. Qc6 Kg8 42. e4 Re5 43. Kd3 Rg7 44. Ke3 Rge7 45. Qg6+ Rg7
46. Qxh6 c4 47. bxc4 b3 48. Qb6 Rge7 49. Qxb3 Rxe4+ 50. Kf3
R4e5 51. Qd3 Rf7 52. Kf4 Rc5 53. h6 Rfc7 54. Kg5 Kh7 55. Qd6
R5c6 56. Qd5 Rxc4 57. Qe6 R4c6 58. Qe4 Rc5 59. Qe8 R5c6
60. Qf8 Rc4 61. Kh5 R4c6 62. Kg5 Rc4 63. Kh5 R4c6 64. Kg4 Rc4+
65. Kg5 R4c6 66. Kf4 Rc4+ 1/2-1/2

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1/2-1/2"]
[White "Mijo Udovcic"]
[Black "Jan Hein Donner"]
[ECO "E32"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "114"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3
b6 7. Nf3 Bb7 8. g3 c5 9. Bg2 cxd4 10. Qxd4 Nc6 11. Qc3 Rc8
12. b4 d5 13. cxd5 Qxd5 14. O-O Na5 15. Qb2 Nc4 16. Qb3 Nd6
17. Qxd5 Nxd5 18. Bf4 Nxf4 19. gxf4 Nb5 20. e3 Rfd8 21. a4 Nc3
22. Nd4 Bxg2 23. Kxg2 Rc4 24. Rfc1 Rdc8 25. b5 Nxa4 26. Rxc4
Rxc4 27. Nc6 h6 28. Ne5 Rb4 29. Nc6 Rc4 30. Ne5 Re4 31. Rc1
Nc5 32. Nc4 Nb3 33. Rc3 Na5 34. Nd6 Rb4 35. Rc8+ Kh7 36. Rc7
Kg6 37. Rxa7 Nc4 38. Nxc4 Rxc4 39. Rb7 Rb4 40. Rxb6 Kf5
41. Kf3 g5 42. fxg5 hxg5 43. h3 Ke5 44. Rb8 f5 45. b6 g4+
46. hxg4 Rxg4 47. b7 Rb4 48. Kg3 Rg4+ 49. Kf3 Rb4 50. Ke2 Rb2+
51. Kf3 Rb4 52. Kg3 Ke4 53. Re8 f4+ 54. exf4 Rxb7 55. Rxe6+
Kf5 56. Re5+ Kf6 57. Ra5 Rb1 1/2-1/2

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "14"]
[Result "0-1"]
[White "Rogelio Ortega"]
[Black "Jan Hein Donner"]
[ECO "B58"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "68"]

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Be2 e5
7. Nxc6 bxc6 8. Qd3 Be7 9. O-O O-O 10. Rd1 Qc7 11. Qg3 Nd7
12. b4 a6 13. a3 Nb6 14. Rd3 f5 15. Bh6 Bf6 16. exf5 Bxf5
17. Rd2 Qe7 18. Be3 Nd7 19. Bg4 Bxg4 20. Qxg4 e4 21. Qe2 d5
22. Bd4 Bxd4 23. Rxd4 Ne5 24. Nxe4 Rf4 25. Ng3 Rxd4 26. Nf5
Qa7 27. Qxe5 Re4 28. Qg3 Rf8 29. Ne3 Qd4 30. Rf1 Qc3 31. Rd1
Ref4 32. Nxd5 Qxc2 33. Ne7+ Kh8 34. Ng6+ hxg6 0-1

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "16"]
[Result "1/2-1/2"]
[White "O'Kelly"]
[Black "Jan Hein Donner"]
[ECO "E59"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "59"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 dxc4
7. Bxc4 c5 8. O-O Nc6 9. a3 Bxc3 10. bxc3 Qc7 11. Be2 e5
12. d5 Rd8 13. e4 Ne7 14. Qc2 Ng6 15. c4 Ne8 16. Bb2 f6
17. Ne1 Nd6 18. g3 f5 19. f3 fxe4 20. fxe4 Bh3 21. Ng2 Qe7
22. Rf2 Rf8 23. Raf1 Rxf2 24. Rxf2 Rf8 25. Rxf8+ Nxf8 26. Ne3
Qg5 27. Bc1 Qg6 28. Bd3 Qf6 29. Qe2 Bc8 30. Qf2 1/2-1/2

[Event "Beverwijk I"]
[Site "?"]
[Date "1964.??.??"]
[EventDate "1964.??.??"]
[Round "1"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Arthur Dunkelblum"]
[ECO "D32"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "43"]

1. c4 c5 2. Nc3 Nf6 3. Nf3 Nc6 4. e3 e6 5. d4 d5 6. a3 cxd4
7. exd4 dxc4 8. Bxc4 Be7 9. O-O O-O 10. Re1 b6 11. Qd3 Bb7
12. Bg5 h6 13. Bf4 Re8 14. Rad1 Rc8 15. Ba2 Nb8 16. Ne5 Bf8
17. Bb1 Ba6 18. Qc2 g5 19. Nxf7 Kxf7 20. Qg6+ Ke7 21. Be5 Nbd7
22. Nd5+ 1-0

[Event "Beverwijk I"]
[Site "?"]
[Date "1964.??.??"]
[EventDate "1964.??.??"]
[Round "3"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Paul De Rooi"]
[ECO "A40"]
[WhiteElo "2500"]
[BlackElo "2014"]
[PlyCount "105"]

1. d4 e6 2. c4 c5 3. d5 exd5 4. cxd5 d6 5. Nc3 g6 6. Nf3 Bg7
7. e4 a6 8. a4 Bg4 9. Be2 Nd7 10. Nd2 Bxe2 11. Qxe2 Ne7
12. O-O O-O 13. Nc4 Ne5 14. Ne3 f5 15. f4 Nd7 16. exf5 gxf5
17. Nc4 Rf6 18. Qd3 Rg6 19. Bd2 Qf8 20. Rae1 Bd4+ 21. Be3 Qg7
22. Kh1 Rf8 23. Bf2 Rf7 24. Re2 Bxf2 25. Rfxf2 Qd4 26. Rf3 Kf8
27. g3 Nc8 28. Re6 Ndb6 29. Nxb6 Nxb6 30. Qxd4 cxd4 31. Ne2
Nxd5 32. Nxd4 Rc7 33. Re2 Rc1+ 34. Kg2 Rc4 35. Rd2 Rxa4
36. Nxf5 Nxf4+ 37. Kf1 Rf6 38. Nxd6 Ra1+ 39. Kf2 Nh3+ 40. Kg2
Rg1+ 41. Kxh3 Rxf3 42. Nxb7 Ra1 43. Nc5 Ra2 44. Kg4 Rf1 45. h4
Rc1 46. Rf2+ Ke7 47. Re2+ Kd6 48. Ne4+ Kc6 49. Nf6 Rb1
50. Re6+ Kc5 51. Nxh7 Rbxb2 52. Ng5 Rc2 53. Rg6 1/2-1/2

[Event "Beverwijk I"]
[Site "?"]
[Date "1964.??.??"]
[EventDate "1964.??.??"]
[Round "4"]
[Result "1-0"]
[White "T Van Scheltinga"]
[Black "Jan Hein Donner"]
[ECO "E18"]
[WhiteElo "2325"]
[BlackElo "2500"]
[PlyCount "61"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7 5. Bg2 Be7 6. O-O O-O
7. Nc3 d5 8. Ne5 Qc8 9. cxd5 exd5 10. Bg5 Qe6 11. Rc1 c6
12. Qb3 Nbd7 13. f4 Nxe5 14. fxe5 Ng4 15. Bd2 Qg6 16. Qc2 f5
17. h3 Nh6 18. Nxd5 cxd5 19. Qc7 Bg5 20. Bxg5 Qxg5 21. Qxb7
Rad8 22. Rc3 Qd2 23. e3 f4 24. exf4 Nf5 25. Rc7 Qe3+ 26. Rf2
Qxg3 27. e6 Rb8 28. Qxd5 Rbe8 29. Qe5 Rf6 30. d5 Nh4 31. Qg5
1-0

[Event "Beverwijk I"]
[Site "?"]
[Date "1964.??.??"]
[EventDate "1964.??.??"]
[Round "5"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Coenraad Zuidema"]
[ECO "E14"]
[WhiteElo "2500"]
[BlackElo "2450"]
[PlyCount "126"]

1. d4 Nf6 2. c4 e6 3. Nf3 b6 4. e3 Bb7 5. Bd3 d5 6. cxd5 Nxd5
7. O-O Be7 8. Qe2 Nd7 9. e4 N5f6 10. Nc3 O-O 11. Bg5 c5 12. e5
Ne8 13. Ne4 cxd4 14. Bxe7 Qxe7 15. Neg5 g6 16. Be4 Nc5
17. Bxb7 Nxb7 18. Rad1 Nc5 19. Rxd4 h6 20. b4 hxg5 21. bxc5
bxc5 22. Rc4 Ng7 23. g4 Ne8 24. Qe3 Nc7 25. Qxg5 Qxg5 26. Nxg5
Nd5 27. Rxc5 Rfb8 28. Ne4 Rb4 29. Re1 Nf4 30. Nf6+ Kg7 31. Rd1
Rd8 32. Rf1 Nd3 33. Rc3 Nxe5 34. g5 Rd3 35. Rxd3 Nxd3 36. Rd1
Nf4 37. h4 Nh5 38. Ne8+ Kf8 39. Rd8 Rg4+ 40. Kf1 Ke7 41. Ra8
Rxh4 42. Nc7 Ra4 43. Nb5 Rxa2 44. Rxa7+ Rxa7 45. Nxa7 Kd7
46. Ke2 Nf4+ 47. Ke3 e5 48. Ke4 Ke6 49. Nc6 Nh3 50. Nd8+ Ke7
51. Nb7 Nxf2+ 52. Kxe5 Nh3 53. Na5 Nxg5 54. Nc6+ Kf8 55. Nb4
Kg7 56. Nd5 Nh7 57. Nf4 f6+ 58. Ke6 Ng5+ 59. Ke7 Ne4 60. Ke6
Ng5+ 61. Ke7 Ne4 62. Ke6 Ng3 63. Ke7 g5 0-1

[Event "Beverwijk I"]
[Site "?"]
[Date "1964.??.??"]
[EventDate "1964.??.??"]
[Round "7"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Levente Lengyel"]
[ECO "E46"]
[WhiteElo "2500"]
[BlackElo "2293"]
[PlyCount "76"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 Nc6
7. O-O a6 8. Qe2 dxc4 9. Bxc4 Bd6 10. Rd1 Qe8 11. Ng5 e5
12. Nge4 Nxe4 13. Nxe4 Bf5 14. Nxd6 cxd6 15. dxe5 dxe5 16. Bd2
Be6 17. Bc3 Qe7 18. Bd5 Bxd5 19. Rxd5 Rfd8 20. Rad1 Rxd5
21. Rxd5 Rd8 22. Qc4 Rxd5 23. Qxd5 h6 24. Kf1 Qh4 25. h3 Qa4
26. Kg1 Qb5 27. Qd7 f6 28. g4 b6 29. Kg2 a5 30. Kg3 Qc5 31. h4
Ne7 32. Qe6+ Kf8 33. Kf3 Nd5 34. g5 Nxc3 35. gxh6 e4+ 36. Kg2
Qh5 37. bxc3 Qf3+ 38. Kg1 gxh6 1/2-1/2

[Event "Beverwijk I"]
[Site "?"]
[Date "1964.??.??"]
[EventDate "1964.??.??"]
[Round "9"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Bruno Parma"]
[ECO "E58"]
[WhiteElo "2500"]
[BlackElo "2480"]
[PlyCount "114"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5
7. O-O Nc6 8. a3 Bxc3 9. bxc3 Qc7 10. cxd5 exd5 11. Nh4 Ne7
12. a4 Ng6 13. Nf5 c4 14. Bc2 Ne4 15. Ng3 f5 16. Ne2 Bd7
17. f3 Nd6 18. Ng3 Rae8 19. Qd2 Rf7 20. Ba3 Ref8 21. a5 Bc6
22. Bc5 a6 23. Rae1 Qd7 24. Re2 Kh8 25. Nh5 Kg8 26. Qe1 Ne7
27. Qh4 g6 28. Nf4 Nec8 29. Nh3 Qe7 30. Qg3 Qf6 31. Qe1 Re8
32. Qd2 Rfe7 33. Rfe1 Qf7 34. Nf2 Qf6 35. e4 dxe4 36. d5 e3
37. Rxe3 Rxe3 38. Rxe3 Bd7 39. Bd4 Qf7 40. Be5 Nb5 41. Nh3 Qf8
42. f4 Ncd6 43. Ng5 Nf7 44. Nxf7 Qxf7 45. Bd1 Qe7 46. Be2 Qc5
47. Kf2 Rxe5 48. fxe5 f4 49. d6 Be6 50. Bf3 Na3 51. Bxb7 Nc2
52. Kf3 fxe3 53. Qxc2 Qxe5 54. Qe4 Qxd6 55. Kxe3 Bf7 56. Ke2
Qa3 57. Bd5 Qb2+ 1/2-1/2

[Event "11th Clare Benedict Cup"]
[Site "Lenzerheide, Switzerland"]
[Date "1964.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1-0"]
[White "Wolfgang Unzicker"]
[Black "Jan Hein Donner"]
[ECO "C13"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "55"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.h4 Bxg5 7.hxg5
Qxg5 8.Nh3 Qe7 9.Nf4 Nc6 10.Qd2 Nb6 11.Nh5 Rg8 12.Bd3 Bd7
13.Bxh7 Rh8 14.Nxg7+ Kd8 15.Ne2 f6 16.exf6 Qxf6 17.Qh6 Qxh6
18.Rxh6 Ke7 19.Nf4 Rag8 20.Ngxe6 Rg4 21.f3 Bxe6 22.Rxe6+ Kd7
23.fxg4 Rxh7 24.O-O-O Rf7 25.g3 Rxf4 26.Rxc6 Rxg4 27.Rc3 Nc4
28.Rh1 1-0

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Vladimir Bagirov"]
[ECO "D22"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "38"]

1.d4 d5 2.c4 dxc4 3.Nf3 a6 4.e3 Bg4 5.Bxc4 e6 6.Be2 Nf6 7.O-O
c5 8.Qb3 Nc6 9.Rd1 Qc7 10.Nc3 Be7 11.h3 Bh5 12.dxc5 Bxc5
13.Bd2 O-O 14.Rac1 Ba7 15.Qc4 Rac8 16.Ne4 Nxe4 17.Qxe4 Rfd8
18.Bc3 Rxd1+ 19.Rxd1 Bb8 1/2-1/2

[Event "Netherlands"]
[Site "Nordwijk-aan-Zee  (4)"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Mikhail Botvinnik"]
[Black "Jan Hein Donner"]
[ECO "D32"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "105"]

1.c4 Nf6 2.Nc3 e6 3.Nf3 d5 4.e3 c5 5.cxd5 exd5 6.d4 Nc6 7.Be2
cxd4 8.Nxd4 Bd6 9.O-O O-O 10.b3 a6 11.Bb2 Re8 12.Rc1 Bd7
13.Bf3 Nxd4 14.Qxd4 Be5 15.Qd2 Bg4 16.Rfd1 Bxf3 17.gxf3 Qd7
18.Kg2 Qf5 19.Ne2 Bxb2 20.Qxb2 Rac8 21.Nd4 Qe5 22.Rc2 Nd7
23.Rdc1 Rb8 24.Qc3 Nf8 25.Qc7 Qf6 26.Qg3 Ne6 27.Nxe6 fxe6
28.Rc7 Red8 29.h4 e5 30.R1c5 h6 31.h5 Rd6 32.Qg4 d4 33.exd4
Rxd4 34.Qg3 Rf4 35.Rc4 Rf8 36.Rxf4 exf4 37.Qg4 b6 38.Rb7 Rf7
39.Rxf7 Kxf7 40.Qd7+ Kg8 41.Qc8+ Kh7 42.Qxa6 Qg5+ 43.Kf1 Qxh5
44.Qd3+ Kg8 45.a4 Qh1+ 46.Ke2 h5 47.Qd5+ Kh7 48.Qd1 Qh2 49.b4
h4 50.Qf1 g5 51.a5 bxa5 52.bxa5 g4 53.a6 1-0

[Event "Havana CAP  Rd: 16"]
[Site "Havana CAP  Rd: 16"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Robert James Fischer"]
[Black "Jan Hein Donner"]
[ECO "C89"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "69"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5
7. Bb3 O-O 8. c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6
12. d4 Bd6 13. Re1 Qh4 14. g3 Qh3 15. Be3 Bg4 16. Qd3 Nxe3
17. Rxe3 c5 18. Bd5 Rad8 19. Nd2 Bb8 20. Bg2 Qh6 21. d5 c4
22. Qd4 Bf5 23. b3 Rc8 24. bxc4 Bd6 25. Qb6 Bf4 26. Qxh6 Bxh6
27. f4 g5 28. Re5 Bd3 29. c5 Rxc5 30. d6 Rxc3 31. d7 gxf4
32. Rae1 Bg7 33. Re8 Bd4+ 34. Kh1 Bf6 35. gxf4 1-0

[Event "Havana"]
[Site "Havana"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Efim Geller"]
[ECO "E60"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "42"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 c5 6.Nf3 cxd4 7.Nxd4
Nc6 8.Nc2 d6 9.O-O Be6 10.b3 Rc8 11.Bb2 Qa5 12.Nd5 Nxd5
13.Bxg7 Nc3 14.Bxc3 Qxc3 15.Ne3 Qe5 16.Nd5 Bxd5 17.Bxd5 b5
18.Rc1 Nb8 19.Qd3 e6 20.Bf3 bxc4 21.Rxc4 d5 1/2-1/2

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Efim Geller"]
[ECO "E60"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "41"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 c5 6.Nf3 cxd4 7.Nxd4
Nc6 8.Nc2 d6 9.O-O Be6 10.b3 Rc8 11.Bb2 Qa5 12.Ne3 a6 13.a3
Qh5 14.Rb1 Bh3 15.Ncd5 Nxd5 16.cxd5 Ne5 17.Qd2 Bxg2 18.Kxg2
Ng4 19.Nxg4 Qxg4 20.Bxg7 Kxg7 21.Rbc1 1/2-1/2

[Event "Beverwijk"]
[Site "09"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Borislav Ivkov"]
[Black "Jan Hein Donner"]
[ECO "B99"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "60"]

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.a3 Rb8 12.Bxf6 Nxf6
13.g5 Nd7 14.Bh3 Nc5 15.Rhg1 b4 16.axb4 Rxb4 17.f5 Qb6 18.fxe6
fxe6 19.Nxe6 Nxe6 20.Nd5 Qc5 21.Nxb4 Qxb4 22.e5 Bb7 23.Qf5
Qf4+ 24.Qxf4 Nxf4 25.exd6 Ne2+ 26.Kb1 Nxg1 27.Re1 Nxh3
28.Rxe7+ Kd8 29.Rxb7 Re8 30.c4 Re5 1/2-1/2

[Event "Hamburg tt"]
[Site "02"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Borislav Ivkov"]
[ECO "E60"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "59"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 c6 6.e4 d6 7.Nge2 e5
8.O-O a6 9.b3 b5 10.Qc2 exd4 11.Nxd4 Ng4 12.Rd1 c5 13.Nde2 b4
14.e5 Bf5 15.Ne4 Bxe5 16.Bb2 Bxe4 17.Qxe4 Nxf2 18.Qxe5 dxe5
19.Rxd8 Rxd8 20.Bxa8 Rd2 21.Kxf2 Rxb2 22.Rd1 Rxa2 23.Rd8+ Kg7
24.Rxb8 Rb2 25.Rb6 a5 26.Ra6 Rxb3 27.Rxa5 Ra3 28.Rxa3 bxa3
29.Nc3 f5 30.Bc6 1-0

[Event "Hamburg tt"]
[Site "07"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Borislav Ivkov"]
[Black "Jan Hein Donner"]
[ECO "B92"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "47"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nb3
Qc7 8.O-O b5 9.a4 b4 10.Nd5 Nxd5 11.exd5 Be7 12.Bd2 a5 13.c3
bxc3 14.Bxc3 Nd7 15.Qe1 Bd8 16.Rc1 Qb8 17.Nxa5 Bxa5 18.Bxa5
Qxb2 19.Bb5 Ke7 20.Rc6 Qd4 21.Bc7 Qxd5 22.Bxd6+ Kf6 23.Bxe5+
Kf5 24.Qb1+ 1-0

[Event "Havana Cap-mem"]
[Site "13"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Borislav Ivkov"]
[Black "Jan Hein Donner"]
[ECO "C81"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "41"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3
d5 8.dxe5 Be6 9.Qe2 Nc5 10.Rd1 Nxb3 11.cxb3 Be7 12.Nc3 O-O
13.Be3 Na5 14.Rac1 Nb7 15.Ne4 Bg4 16.h3 Bxf3 17.Qxf3 c6 18.Ng3
Rc8 19.Nf5 g6 20.Rxd5 Qe8 21.Bh6 1-0

[Event "Havana"]
[Site "Havana"]
[Date "1965.??.??"]
[EventDate "1965.??.??"]
[Round "?"]
[Result "1/2-1/2"]
[White "Victor Ciocaltea"]
[Black "Jan Hein Donner"]
[ECO "C32"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "42"]

1. e4 e5 2. f4 d5 3. exd5 e4 4. d3 Nf6 5. dxe4 Nxe4 6. Be3
Qh4+ 7. g3 Nxg3 8. Nf3 Qe7 9. hxg3 Qxe3+ 10. Qe2 Bc5 11. Qxe3+
Bxe3 12. Nbd2 O-O 13. Bd3 h6 14. Nc4 Bc5 15. O-O-O Nd7 16. g4
Nb6 17. g5 Nxc4 18. Bxc4 Be3+ 19. Kb1 Bg4 20. Rdf1 Bxf4
21. gxh6 Bxf3 1/2-1/2

[Event "Havana Cap-mem"]
[Site "04"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Ludek Pachman"]
[ECO "D38"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "102"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Nf3 d5 5.cxd5 exd5 6.Qa4+ Nc6
7.Bg5 Qd6 8.Bxf6 Qxf6 9.e3 O-O 10.Be2 Be6 11.O-O a6 12.Rfc1
Bd6 13.e4 dxe4 14.Nxe4 Qf4 15.Nxd6 Qxd6 16.Rd1 Bd5 17.Rd2 Rfe8
18.a3 Rad8 19.Rad1 Qe6 20.Rf1 Bb3 21.d5 Rxd5 22.Qxb3 Rxd2
23.Bc4 Na5 24.Qc3 Nxc4 25.Nxd2 Nxd2 26.Qxd2 g6 27.g3 Qe2
28.Qc3 c6 29.h4 Qe5 30.Qd2 c5 31.Rd1 b5 32.b3 Rc8 33.Re1 Qf6
34.Rc1 c4 35.Rc3 h5 36.bxc4 bxc4 37.Qc1 Qd4 38.Qc2 Qd5 39.Kh2
Re8 40.Qc1 Re2 41.Qf4 Re1 42.Qf3 Qxf3 43.Rxf3 f5 44.Rc3 Re4
45.Kg2 Kf7 46.f3 Rd4 47.Kf2 Ke6 48.Ke2 Kd5 49.Ke3 Kc5 50.Ke2
Rd5 51.Re3 Kd4 0-1

[Event "England"]
[Site "England"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Dr. Jonathan Penrose"]
[Black "Jan Hein Donner"]
[ECO "C93"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3
O-O 8.c3 d6 9.h3 h6 10.d4 Re8 11.Nbd2 Bf8 12.Nf1 Bd7 13.Bc2 a5
14.Ng3 a4 15.Nh2 g6 16.f4 Bg7 17.Nf3 exf4 18.Bxf4 d5 19.e5 Nh7
20.Qd2 h5 21.Ng5 Nf8 22.Rf1 Qe7 23.Rf2 Reb8 24.a3 Na5 25.Raf1
Nc4 26.Qc1 Rb6 27.Bd3 Re8 28.Nf3 Re6 29.Bg5 f6 30.exf6 Bxf6
31.Bxf6 Rxf6 32.Bxc4 bxc4 33.Qg5 Be6 34.Nxh5 Rf7 35.Qg3 Rf5
36.Nf4 Bf7 37.Ne5 Rg5 38.Qf3 Qf6 39.Qd1 Rf5 40.Qxa4 c5 41.Nxd5
1-0

[Event "Hamburg"]
[Site "Hamburg"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "5"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Petrosian"]
[ECO "E53"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "40"]

1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5
7. O-O b6 8. cxd5 exd5 9. Ne5 Bb7 10. Bd2 Nbd7 11. a3 Nxe5
12. dxe5 Bxc3 13. Bxc3 Ne4 14. Bxe4 dxe4 15. Qg4 Qe7 16. Rfd1
Qe6 17. Qh4 Bd5 18. Rd2 a5 19. a4 Rab8 20. h3 Rb7 1/2-1/2

[Event "Hamburg"]
[Site "Hamburg"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "10"]
[Result "1-0"]
[White "Petrosian"]
[Black "Jan Hein Donner"]
[ECO "D30"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "67"]

1. d4 Nf6 2. c4 d5 3. Nf3 e6 4. Bg5 h6 5. Bxf6 Qxf6 6. e3 c6
7. Nbd2 Nd7 8. Bd3 Bd6 9. O-O O-O 10. e4 dxe4 11. Nxe4 Qe7
12. Nxd6 Qxd6 13. c5 Qc7 14. Qe2 b6 15. b4 Rd8 16. Rac1 bxc5
17. bxc5 Nf6 18. Rb1 Bd7 19. Rb2 Rab8 20. Rfb1 Be8 21. g3 Nd7
22. Kg2 Rxb2 23. Rxb2 Rb8 24. Ne5 Rxb2 25. Qxb2 f6 26. Nc4 Nf8
27. Nd6 Bg6 28. Bc4 Kh7 29. Qb7 Qxb7 30. Nxb7 e5 31. dxe5 fxe5
32. Nd8 Nd7 33. f3 Nxc5 34. Nxc6 1-0

[Event "Santa Monica (USA)"]
[Site "It"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "14"]
[Result "1-0"]
[White "Petrosian"]
[Black "Jan Hein Donner"]
[ECO "A07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "109"]

1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. O-O e5 5. d3 Ne7 6. Nbd2 O-O
7. e4 c5 8. exd5 Nxd5 9. Nb3 Nd7 10. Re1 Rb8 11. Nfd2 Nc7
12. Na5 Ne6 13. Nac4 Qc7 14. Ne4 Nb6 15. Nc3 Bd7 16. a4 Bc6
17. Nb5 Bxb5 18. axb5 Nxc4 19. dxc4 b6 20. c3 Rfe8 21. Ra6 Re7
22. Qa4 Rc8 23. Bd5 Qb8 24. Bxe6 fxe6 25. Qd1 Rd8 26. Qg4 Ree8
27. h4 Rd7 28. h5 gxh5 29. Qxh5 Rf8 30. Qg4 Rf6 31. Be3 Rg6
32. Qe4 Bf8 33. Raa1 Bd6 34. Red1 Rgg7 35. Rd2 Bf8 36. Rxd7
Rxd7 37. Qg4+ Kf7 38. Qh3 Kf6 39. Rf1 Qe8 40. Qh4+ Kg7
41. Bh6+ Kg8 42. Bxf8 Kxf8 43. Re1 Qf7 44. Rxe5 Qg6 45. Kg2
Qf7 46. Re4 Ke8 47. Rf4 Qe7 48. Qh5+ Kd8 49. Qe5 Kc8 50. Qe4
Kb8 51. Rh4 Qf7 52. Rf4 Qe7 53. Qf3 Qd6 54. Rf8+ Rd8 55. Rf6
1-0

[Event "?"]
[Site "?"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Lajos Portisch"]
[ECO "E54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "26"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 c5 6.Nf3 d5 7.O-O
dxc4 8.Bxc4 cxd4 9.exd4 b6 10.Ne5 Bb7 11.Bg5 Nbd7 12.Qe2 Bxc3
13.bxc3 Qc7 1/2-1/2

[Event "?"]
[Site "?"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Lajos Portisch"]
[Black "Jan Hein Donner"]
[ECO "E54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "94"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Nf3 O-O 6.Bd3 d5 7.O-O
dxc4 8.Bxc4 b6 9.Qe2 Bb7 10.Rd1 cxd4 11.exd4 Nbd7 12.d5 Bxc3
13.dxe6 Bxf3 14.Qxf3 Ne5 15.exf7 Kh8 16.Rxd8 Nxf3+ 17.gxf3
Raxd8 18.bxc3 Rd7 19.Ba3 Rfxf7 20.Bxf7 Rxf7 21.Rd1 Rd7 22.Rxd7
Nxd7 23.Kf1 Kg8 24.Ke2 Kf7 25.Kd3 Ke6 26.Ke4 g6 27.Bc1 Ne5
28.Bf4 Nc6 29.Be3 Ne5 30.h3 Nc6 31.Bf4 b5 32.Be3 a6 33.Bf4 Ne7
34.Kd4 Nf5+ 35.Kc5 Nh4 36.Kb6 Kd5 37.Kxa6 Kc4 38.Kb6 Nxf3
39.Kc6 h5 40.Bd6 h4 41.Be7 Ng1 42.Bxh4 Nxh3 43.a3 g5 44.Bg3 g4
45.Bh4 Nf4 46.Bf6 Ne2 47.Be5 Nc1 1/2-1/2

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Lajos Portisch"]
[Black "Jan Hein Donner"]
[ECO "E25"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "94"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.f3 d5 5.a3 Bxc3+ 6.bxc3 c5 7.cxd5
Nxd5 8.dxc5 f5 9.Qc2 O-O 10.e4 Nf6 11.Bf4 e5 12.Bc4+ Kh8
13.Bxe5 fxe4 14.Bd6 Bf5 15.Ne2 Re8 16.O-O exf3 17.Qxf5 fxe2
18.Rfe1 Qd7 19.Qxd7 Nbxd7 20.Rxe2 Rxe2 21.Bxe2 Ne4 22.Bf3
Ndxc5 23.Be5 Re8 24.Bd4 b6 25.Re1 Nf6 26.Rxe8+ Nxe8 27.Be5 Nd7
28.Bf4 Kg8 29.Kf2 Kf7 30.Ke3 Ke6 31.Kd4 Ndf6 32.g4 h6 33.c4
Nd6 34.h3 Nd7 35.Bc6 Nf6 36.a4 Nd7 37.a5 Nc5 38.Bd5+ Kd7
39.Be5 Ne8 40.Bb8 Nb3+ 41.Kc3 Nxa5 42.Bxa7 Kc7 43.c5 bxc5
44.Bxc5 Nc6 45.Bf8 Ne5 46.Ba3 Kd7 47.Kd4 Ng6 1/2-1/2

[Event "Havana Cap-mem"]
[Site "03"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Karl Robatsch"]
[Black "Jan Hein Donner"]
[ECO "B90"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "76"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bc4 e6 7.a3
Be7 8.Ba2 O-O 9.O-O b5 10.Qe2 Bb7 11.Bg5 h6 12.Bd2 Qb6 13.Be3
Qc7 14.Rad1 Nbd7 15.Bc1 Rad8 16.Rd3 Nc5 17.Rh3 Ncxe4 18.Nxe6
fxe6 19.Bxe6+ Rf7 20.Nxe4 Bxe4 21.Rg3 Bd5 22.Bxf7+ Kxf7 23.Re1
Qb7 24.Bd2 Bf8 25.Bc3 Re8 26.Re3 Rxe3 27.Qxe3 Qd7 28.f3 Be6
29.Qf4 Bf5 30.Re2 Nd5 31.Qd4 Nxc3 32.Qxc3 Be7 33.Qd2 Bf6 34.c3
d5 35.Kh1 Qc6 36.h3 Qc4 37.Re1 h5 38.Qe3 Qc6 0-1

[Event "J.Capablanca memorial, Havana"]
[Site "J.Capablanca memorial, Havana"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Vasily Smyslov"]
[Black "Jan Hein Donner"]
[ECO "A14"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "35"]

1. Nf3 d5 2. c4 e6 3. g3 Nf6 4. Bg2 Be7 5. O-O O-O 6. d4 c5
7. cxd5 Nxd5 8. dxc5 Bxc5 9. Qc2 Be7 10. Rd1 Nd7 11. Nc3 Nxc3
12. Qxc3 a5 13. Be3 Ra6 14. Nd4 a4 15. Rac1 Qa5 16. Qxa5 Rxa5
17. Rxc8 Rxc8 18. Bxb7 1-0

[Event "Amsterdam IBM"]
[Site "05"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Laszlo Szabo"]
[Black "Jan Hein Donner"]
[ECO "E31"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "41"]

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

[Event "Havana Cap-mem"]
[Site "12"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Laszlo Szabo"]
[ECO "D27"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.a4
Nc6 8.Qe2 Be7 9.dxc5 Qc7 10.e4 Ng4 11.Be3 Nxe3 12.Qxe3 Qa5
13.Rc1 Qxc5 14.Qxc5 Bxc5 15.Bxa6 Bxf2+ 16.Kxf2 Rxa6 17.b4 Ra8
18.b5 Na5 19.Nbd2 e5 20.Nxe5 Be6 21.Ke3 Ke7 22.Nd3 Rhc8
23.Rxc8 Rxc8 24.Rc1 Rxc1 25.Nxc1 Kd6 26.Kd4 f6 27.Nd3 b6
28.e5+ fxe5 29.Nxe5 Kc7 30.Nec4 Nb7 31.Ne4 Nd8 32.Nc3 Bxc4
33.Kxc4 Ne6 34.Nd5+ Kb7 35.Kb4 h5 36.a5 bxa5 37.Kxa5 h4 38.Nc3
Nf4 39.Ne4 Nxg2 40.Nc5+ Kc8 41.Ka6 1-0

[Event "IBM"]
[Site "Amsterdam"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "3"]
[Result "1/2-1/2"]
[White "Miroslav Filip"]
[Black "Jan Hein Donner"]
[ECO "D37"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "50"]

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

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "21"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Georgi P Tringov"]
[ECO "D32"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "32"]

1.c4 c5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3 e6 5.d4 d5 6.cxd5 exd5 7.Be2
cxd4 8.Nxd4 Bc5 9.O-O O-O 10.Na4 Bd6 11.b3 Nxd4 12.exd4 Ne4
13.Bf3 Bf5 14.Be3 Rc8 15.Nc5 b6 16.Nd3 Re8 1/2-1/2

[Event "Noordwijk"]
[Site "Noordwijk"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Milko Bobotsov"]
[ECO "E52"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "40"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 b6 7.O-O
Bb7 8.Bd2 Be7 9.Qe2 Nbd7 10.Rfd1 c5 11.Rac1 Rc8 12.cxd5 exd5
13.Ne5 c4 14.Bb1 a6 15.e4 Nxe4 16.Nxe4 dxe4 17.Bxe4 Bxe4
18.Qxe4 Nxe5 19.dxe5 Qc7 20.Be3 b5 1/2-1/2

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "7"]
[Result "1/2-1/2"]
[White "Milko Bobotsov"]
[Black "Jan Hein Donner"]
[ECO "A19"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "43"]

1.c4 Nf6 2.Nc3 e6 3.e4 c5 4.e5 Ng8 5.d4 cxd4 6.Qxd4 Nc6 7.Qe4
d6 8.Nf3 Qa5 9.exd6 Bxd6 10.Bd3 Nf6 11.Qh4 Ne5 12.Nxe5 Qxe5+
13.Be3 Bc5 14.O-O-O Bxe3+ 15.fxe3 Qxe3+ 16.Kb1 Bd7 17.Nd5 Nxd5
18.cxd5 g5 19.Qh5 O-O-O 20.Qxf7 exd5 21.Bf5 Bxf5+ 22.Qxf5+
1/2-1/2

[Event "Beverwijk"]
[Site "it"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Lehmann"]
[Black "Jan Hein Donner"]
[ECO "C70"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "33"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 b5 5. Bb3 Na5 6. O-O d6
7. d4 exd4 8. Nxd4 Nxb3 9. axb3 Bb7 10. Re1 Ne7 11. Nc3 Qd7
12. Nd5 c5 13. Nb6 Qd8 14. Nf5 Nxf5 15. exf5+ Be7 16. Nxa8
Qxa8 17. Qxd6 1-0

[Event "Noordwijk"]
[Site "Noordwijk"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1/2-1/2"]
[White "Bent Larsen"]
[Black "Jan Hein Donner"]
[ECO "A09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "87"]

1.Nf3 d5 2.c4 c6 3.e3 Nf6 4.Nc3 e6 5.b3 Nbd7 6.Bb2 Bd6 7.Qc2
O-O 8.Be2 dxc4 9.bxc4 e5 10.O-O Re8 11.d4 exd4 12.Nxd4 Qc7
13.h3 Nc5 14.Rad1 Bf8 15.Bf3 Bd7 16.Nb3 Be6 17.Nxc5 Bxc5
18.Ne4 Nxe4 19.Bxe4 h6 20.Bh7+ Kh8 21.Bf5 Qe7 22.Rd2 Rad8
23.Rfd1 Bb6 24.Qc3 f6 25.Ba3 Qf7 26.Bxe6 Qxe6 27.Bd6 Rd7 28.c5
Bd8 29.Bb8 Rxd2 30.Qxd2 Be7 31.Bxa7 Rd8 32.Qc2 Rxd1+ 33.Qxd1
Qxa2 34.Bb6 Qd5 35.Qc2 f5 36.Kf1 Kg8 37.Ke2 Qxg2 38.Qxf5 Qd5
39.Qc8+ Kh7 40.Qxb7 Bxc5 41.Bxc5 Qxc5 42.Qf7 Qc2+ 43.Kf3 c5
44.e4 1/2-1/2

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "17"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Ratmir Kholmov"]
[ECO "E54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "38"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 c5 7.O-O
dxc4 8.Bxc4 Bd7 9.a3 Ba5 10.Qe2 Bc6 11.Rd1 Qe7 12.Bd2 Bxf3
13.Qxf3 Nc6 14.dxc5 Qxc5 15.Bf1 Qe7 16.Ne4 Nxe4 17.Qxe4 Bxd2
18.Rxd2 Rfd8 19.Rc2 Rd5 1/2-1/2

[Event "Hoogovens tournament"]
[Site "Beverwijk"]
[Date "1965.??.??"]
[EventDate "1965.01.??"]
[Round "3"]
[Result "0-1"]
[White "Aleksandar Matanovic"]
[Black "Jan Hein Donner"]
[ECO "C70"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "42"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 5.Bb3 Na5 6.d4 exd4 7.Qxd4
d6 8.Bxf7+ Kxf7 9.Qd5+ Be6 10.Ng5+ Ke8 11.Nxe6 c6 12.Qh5+ g6
13.Qf3 Qe7 14.Nxf8 Nc4 15.O-O Nf6 16.Bh6 Ne5 17.Qc3 Nfg4 18.f4
b4 19.Qh3 Nxh6 20.fxe5 Rxf8 21.Qxh6 Qa7+ 0-1

[Event "Noordwijk"]
[Site "Noordwijk"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "7"]
[Result "1-0"]
[White "C B Van den Berg"]
[Black "Jan Hein Donner"]
[ECO "B96"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "25"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4
Nbd7 8.Qf3 Qc7 9.O-O-O Rb8 10.Bd3 b5 11.Rhe1 b4 12.Nd5 Qb7
13.Bxa6 1-0

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "C B Van den Berg"]
[ECO "E54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "95"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 c5 6.Nf3 d5 7.O-O
dxc4 8.Bxc4 b6 9.Qe2 Bb7 10.Rd1 cxd4 11.exd4 Nbd7 12.d5 Bxc3
13.dxe6 Bxf3 14.Qxf3 Ne5 15.Qe2 Qc7 16.Bb3 Neg4 17.g3 Qe5
18.Qxe5 Bxe5 19.h3 Nh6 20.g4 fxe6 21.g5 Nf7 22.gxf6 Bxf6
23.Bxe6 Rae8 24.Bb3 Kh8 25.Rb1 Ng5 26.Kg2 Ne4 27.f3 Nc5 28.Bc4
Rd8 29.Rxd8 Rxd8 30.Be3 Re8 31.Bf2 h6 32.b4 Ne6 33.Bg3 Bg5
34.h4 Bf4 35.Re1 Bxg3 36.Kxg3 Nc7 37.Rxe8+ Nxe8 38.Kf4 Nd6
39.Bd5 Nb5 40.Ke5 Kh7 41.Be4+ Kg8 42.Bd3 Nc3 43.a3 Kf7 44.Kd4
Nd1 45.Bc2 Nf2 46.Ke3 Nh1 47.Kf4 Ke6 48.Kg4 1-0

[Event "Havana"]
[Site "Havana"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "7"]
[Result "1/2-1/2"]
[White "Zbigniew Doda"]
[Black "Jan Hein Donner"]
[ECO "A37"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1.Nf3 c5 2.g3 Nc6 3.Bg2 g6 4.c4 Bg7 5.Nc3 e6 6.O-O Nge7 7.e3
d5 8.cxd5 exd5 9.d4 cxd4 10.Nxd4 O-O 11.Qb3 Nxd4 12.exd4 Nc6
13.Qxd5 Bxd4 14.Qxd8 Rxd8 15.Bg5 f6 16.Bf4 Bf5 17.h3 Rd7
18.Rfe1 Rad8 19.g4 Bd3 20.Be3 Kf7 21.Bxc6 bxc6 22.Bxd4 Rxd4
23.Rac1 c5 24.b3 f5 25.g5 f4 26.f3 Bf5 27.Ne4 Bxh3 28.Rxc5
R4d5 29.Rc7+ R8d7 30.Rec1 Rd1+ 31.Kf2 Rxc1 32.Rxc1 Bf5 33.Rc4
Kg7 34.Ke2 h6 35.gxh6+ Kxh6 36.Ra4 Re7 37.Kf2 Rc7 38.Ke2 Rc2+
39.Nd2 g5 40.Rxa7 g4 41.fxg4 1/2-1/2

[Event "Havana"]
[Site "Havana"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "15"]
[Result "1/2-1/2"]
[White "Eldis Cobo Arteaga"]
[Black "Jan Hein Donner"]
[ECO "E12"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "99"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.Nc3 Bb7 5.Bg5 h6 6.Bh4 Be7 7.e3
Ne4 8.Bxe7 Qxe7 9.Nxe4 Bxe4 10.Be2 O-O 11.O-O d6 12.Nd2 Bc6
13.Bf3 e5 14.Bxc6 Nxc6 15.d5 Nb8 16.b4 Nd7 17.Qc2 f5 18.f3 g6
19.Qc3 Rfc8 20.Nb3 c6 21.dxc6 Rxc6 22.Qd3 Rac8 23.Rac1 Qe6
24.Rfd1 Rxc4 25.Rxc4 Rxc4 26.Qxd6 Qxd6 27.Rxd6 Nf8 28.b5 Kf7
29.f4 exf4 30.exf4 Ke7 31.Rd4 Rxd4 32.Nxd4 Ne6 33.Nc6+ Kd6
34.Nxa7 Nxf4 35.Nc8+ Kc5 36.Ne7 Kxb5 37.g3 Ne2+ 38.Kf2 Nc3
39.Nxg6 Nxa2 40.Ne7 Nc3 41.Nxf5 Kc4 42.Ke3 b5 43.Nd6+ Kd5
44.Kd3 Kxd6 45.Kxc3 Ke5 46.Kb4 Ke4 47.Kxb5 Kf3 48.Kc4 Kg2
49.Kd3 Kxh2 50.Ke2 1/2-1/2

[Event "Havana"]
[Site "Havana"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1/2-1/2"]
[White "Bruno Parma"]
[Black "Jan Hein Donner"]
[ECO "B16"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "27"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ gxf6 6.Qd3 Bg4
7.Be2 h5 8.h3 Bxe2 9.Nxe2 e6 10.Bd2 Nd7 11.O-O-O Qc7 12.Kb1
O-O-O 13.c4 h4 14.Qf3 1/2-1/2

[Event "Havana"]
[Site "Havana"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Gilberto Garcia"]
[ECO "E53"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "93"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 d5 6.Nf3 O-O 7.O-O
Qe7 8.a3 cxd4 9.exd4 Bxc3 10.bxc3 Ne4 11.Re1 f5 12.Bf4 Nc6
13.Qc2 Bd7 14.Ne5 Nxe5 15.Bxe5 Qg5 16.f4 Qd8 17.cxd5 exd5
18.Qb3 Bc6 19.Bxe4 fxe4 20.Rxe4 Ba4 21.Qa2 Rc8 22.Re3 Qd7
23.Rae1 Rf7 24.h3 Bb5 25.g4 Bc4 26.Qf2 Qb5 27.Qg3 Re8 28.f5
Qd7 29.Qf2 Qb5 30.Bd6 Rxe3 31.Qxe3 h6 32.Qe8+ Qxe8 33.Rxe8+
Kh7 34.Be5 Bb5 35.Rd8 Bc6 36.Kh2 Bd7 37.Kg3 a6 38.Kf4 Bc6
39.h4 Bd7 40.h5 Bc6 41.g5 hxg5+ 42.Kxg5 Bd7 43.f6 Be6 44.Rb8
Rd7 45.fxg7 Bg8 46.Rxg8 Kxg8 47.Kg6 1-0

[Event "Havana"]
[Site "Havana"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "5"]
[Result "0-1"]
[White "Eleazar Jimenez-Zerquera"]
[Black "Jan Hein Donner"]
[ECO "B99"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "72"]

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.a3 Rb8 12.Bxf6 Nxf6
13.g5 Nd7 14.h4 b4 15.axb4 Rxb4 16.Bh3 Qb6 17.Bxe6 Rxd4 18.Ba2
Bb7 19.h5 Rxd1+ 20.Rxd1 Qc7 21.Qg4 g6 22.e5 dxe5 23.f5 gxh5
24.Qxh5 Rf8 25.g6 fxg6 26.fxg6 hxg6 27.Qxg6+ Kd8 28.Be6 Bd6
29.Bh3 Nf6 30.Qg5 Qe7 31.Qe3 Kc7 32.Na4 Kb8 33.Bf1 Qc7 34.Qb3
Qc6 35.Bg2 Qxg2 36.Rxd6 Ne4 0-1

[Event "Havana"]
[Site "Havana"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "10"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "O'Kelly"]
[ECO "D06"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "109"]

1.d4 d5 2.c4 c5 3.cxd5 Nf6 4.e4 Nxe4 5.dxc5 Nxc5 6.Nf3 e6
7.Nc3 exd5 8.Qxd5 Nc6 9.Qxd8+ Nxd8 10.Nd5 Nde6 11.Be3 Bd7
12.Ne5 Ba4 13.Nc3 a6 14.Be2 Bd7 15. O-O Bd6 16.Nxd7 Nxd7
17.Bf3 O-O-O 18.Ne4 Bc7 19.Rac1 Kb8 20.Ng5 Nxg5 21.Bxg5 f6
22.Be3 Bb6 23.Bxb6 Nxb6 24.Rc3 Rhe8 25.g3 Re7 26.Rc2 Na8
27.Kg2 Nc7 28.h4 Nb5 29.Bg4 g6 30.Rfc1 f5 31.Be2 Nd4 32.Rd1
Nxc2 33.Rxd8+ Kc7 34.Rd2 Nb4 35.a3 Nc6 36.f4 h5 37.Kf2 Na5
38.Bf3 Nc6 39.Bd5 a5 40.Bc4 Kb6 41.b3 Kc7 42.Rd5 b6 43.Rd3 Nb8
44.Re3 Kd6 45.Rxe7 Kxe7 46.Ke3 Nc6 47.Bd5 Nd8 48.Kd3 Ne6
49.Bxe6 Kxe6 50.Kc4 Kd6 51.Kb5 Kc7 52.Ka6 Kc6 53.b4 a4 54.Ka7
Kb5 55.Kb7 1-0

[Event "Havana"]
[Site "Havana"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "11"]
[Result "1/2-1/2"]
[White "Robert Wade"]
[Black "Jan Hein Donner"]
[ECO "B07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "107"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be2 Bg7 5.h4 h5 6.Nh3 Nc6 7.Ng5 e5
8.d5 Nd4 9.Nb5 Nxe2 10.Qxe2 c6 11.dxc6 bxc6 12.Qc4 O-O 13.Qxc6
Bd7 14.Qa6 d5 15.Nc3 d4 16.Nd1 Qb8 17.a4 Rc8 18.c3 Bc6 19.Qe2
a5 20.O-O Qb7 21.Re1 Nd7 22.Qc4 Nb6 23.Qb3 Rab8 24.cxd4 exd4
25.Bf4 Nxa4 26.Qg3 Ra8 27.e5 Nc5 28.e6 fxe6 29.Be5 Bd5 30.f4
Ra6 31.Nf2 Rb6 32.Nf3 Rxb2 33.Bxd4 Bxd4 34.Nxd4 Qg7 35.Nf3
Rxf2 36.Qxf2 Nd3 37.Qd2 Nxe1 38.Qxe1 Qa7+ 39.Kh1 Rc5 40.Qb1
Qg7 41.Ne5 Kh7 42.Qb6 Qe7 43.Kg1 Rc2 44.Qxa5 Rxg2+ 45.Kf1 Rb2
46.Rc1 Rb7 47.Rc8 Be4 48.Qc3 Qg7 49.Qd4 Bd5 50.Qc3 Re7 51.Kf2
Bb7 52.Rd8 Qf6 53.Kg3 Qf5 54.Qd3 1/2-1/2

[Event "Havana"]
[Site "Havana"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "14"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Istvan Bilek"]
[ECO "E67"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "95"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nbd7 7.O-O
e5 8.e4 Re8 9.h3 c6 10.Be3 exd4 11.Nxd4 Nc5 12.Qc2 Qe7 13.Rfe1
Bd7 14.f3 a6 15.Rad1 b5 16.b4 Ne6 17.c5 d5 18.exd5 cxd5 19.Qd2
Rad8 20.f4 Nxd4 21.Bxd4 Be6 22.Qb2 Qd7 23.Nxd5 Bxd5 24.Rxe8+
Qxe8 25.Bxf6 Bxg2 26.Rxd8 Qxd8 27.Bxd8 Bxb2 28.Kxg2 Kf8 29.c6
Ke8 30.Bb6 f5 31.Bc5 Kd8 32.Bd6 Bd4 33.Kf3 Kc8 34.g4 Bb6
35.Ke2 Kd8 36.Kd3 Kc8 37.Ke2 Kd8 38.Kf3 Kc8 39.gxf5 gxf5
40.Ke2 Bd4 41.Kf3 Bb6 42.c7 a5 43.Kg3 Bxc7 44.Bxc7 Kxc7
45.bxa5 Kb7 46.Kh4 h6 47.Kh5 Ka6 48.Kxh6 1-0

[Event "Havana"]
[Site "Havana"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "18"]
[Result "0-1"]
[White "Francisco Jose Perez"]
[Black "Jan Hein Donner"]
[ECO "B31"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "52"]

1.e4 c5 2.Nf3 Nc6 3.Bb5 g6 4.O-O Bg7 5.c3 d5 6.Qa4 e6 7.Bxc6+
bxc6 8.Qxc6+ Bd7 9.Qxc5 dxe4 10.Ne5 Rc8 11.Qd4 Bb5 12.Re1 Qxd4
13.cxd4 f6 14.Ng4 Ne7 15.Nc3 Bd3 16.b3 h5 17.Ne3 f5 18.Bb2
Bxd4 19.Na4 e5 20.Rac1 Kf7 21.Nc4 Bxc4 22.bxc4 Bxb2 23.Nxb2
Rhd8 24.c5 Ke6 25.f3 exf3 26.gxf3 Rxd2 0-1

[Event "Havana"]
[Site "Havana"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "19"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Dr. Heinz Lehmann"]
[ECO "A22"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "62"]

1.c4 e5 2.Nc3 Nf6 3.g3 d5 4.cxd5 Nxd5 5.Bg2 Nb6 6.Nf3 Nc6
7.O-O Be7 8.d3 O-O 9.a3 a5 10.Na4 Nxa4 11.Qxa4 Nd4 12.Re1 Bf6
13.Nd2 c6 14.e3 Ne6 15.Qc2 h5 16.Ne4 h4 17.Bd2 Ng5 18.Nxg5
Bxg5 19.Bc3 Re8 20.d4 hxg3 21.hxg3 Bf6 22.dxe5 Bxe5 23.Bxe5
Rxe5 24.Rad1 Qe7 25.Rd4 Bf5 26.Qd2 Re8 27.Rd1 Be6 28.Rc1 Rc5
29.Rc3 Rxc3 30.Qxc3 c5 31.Rd2 b6 1/2-1/2

[Event "Beverwijk I"]
[Site "?"]
[Date "1965.??.??"]
[EventDate "1965.??.??"]
[Round "4"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Kick Langeweg"]
[ECO "A57"]
[WhiteElo "2500"]
[BlackElo "2309"]
[PlyCount "81"]

1. d4 Nf6 2. c4 c5 3. d5 d6 4. Nc3 g6 5. e4 Bg7 6. Be2 O-O
7. Nf3 e5 8. O-O Ne8 9. Ne1 Nd7 10. Nd3 f5 11. f3 f4 12. g3 g5
13. a3 h5 14. b4 b6 15. Rb1 Rf6 16. Nf2 Rg6 17. g4 Rh6 18. Bd2
Rh7 19. Rb3 Qf6 20. h3 Nf8 21. bxc5 bxc5 22. Kg2 Ng6 23. Rh1
Nh4+ 24. Kf1 Bf8 25. Bd3 hxg4 26. hxg4 Qh8 27. Ke2 Nf6 28. Kf1
Rh6 29. Rh3 Nf5 30. Rxh6 Ng3+ 31. Kg2 Qxh6 32. Qg1 a6 33. Qh2
Qg6 34. Ne2 Nxe2 35. Bxe2 Ra7 36. Ba5 Rh7 37. Qg1 Qh6 38. Rb8
Bd7 39. Bd8 Ne8 40. Ra8 Qh4 41. Rxa6 1-0

[Event "Beverwijk I"]
[Site "?"]
[Date "1965.??.??"]
[EventDate "1965.??.??"]
[Round "5"]
[Result "1-0"]
[White "Ludek Pachman"]
[Black "Jan Hein Donner"]
[ECO "D57"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "85"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. d4 Be7 5. Bg5 O-O 6. e3 h6
7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5 11. Qb3 Qd6
12. c4 dxc4 13. Bxc4 Nc6 14. Be2 Be6 15. Qc3 Qb4 16. Kd2 Qd6
17. Rhc1 Bd5 18. Ke1 Rfe8 19. Kf1 Re7 20. Kg1 Rd8 21. Ne1 Qf6
22. Bf3 Bxf3 23. Nxf3 Rd6 24. Rab1 Nd8 25. Ne5 Ra6 26. Qc4 Qe6
27. a4 Qxc4 28. Rxc4 Kf8 29. Rbc1 c6 30. f4 Ke8 31. Kf2 g5
32. f5 Ra5 33. e4 h5 34. Kf3 Raxe5 35. dxe5 Rxe5 36. Rd4 c5
37. Rd5 Rxd5 38. exd5 b6 39. Re1+ Kd7 40. f6 a6 41. Re7+ Kd6
42. Ke4 b5 43. a5 1-0

[Event "Beverwijk I"]
[Site "?"]
[Date "1965.??.??"]
[EventDate "1965.??.??"]
[Round "6"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Levente Lengyel"]
[ECO "E53"]
[WhiteElo "2500"]
[BlackElo "2293"]
[PlyCount "89"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5
7. O-O cxd4 8. exd4 dxc4 9. Bxc4 b6 10. Bg5 Bxc3 11. bxc3 Bb7
12. Bd3 Nbd7 13. Re1 Qc7 14. Rc1 Rfe8 15. Ne5 Nxe5 16. Rxe5
Qc6 17. Qf1 Nd7 18. Re3 Qd6 19. Bh4 Nf8 20. Bg3 Qd7 21. f3
Rac8 22. Qe2 Ng6 23. Qd2 Bd5 24. Ba6 Bb7 25. Bf1 Ne7 26. Ree1
Qa4 27. Qc2 Qxc2 28. Rxc2 Red8 29. Bf2 Rd7 30. a4 Rdc7 31. c4
Ba6 32. Rec1 Kf8 33. g4 Bb7 34. Be2 Nc6 35. c5 Nb4 36. Rb2
bxc5 37. dxc5 a5 38. Be1 Bd5 39. Bxb4 axb4 40. Rxb4 Rxc5
41. Rxc5 Rxc5 42. h4 Rc2 43. Kf2 Ra2 44. Ke3 Bc6 45. Bd1
1/2-1/2

[Event "Beverwijk I"]
[Site "?"]
[Date "1965.??.??"]
[EventDate "1965.??.??"]
[Round "12"]
[Result "0-1"]
[White "Petar Smederevac"]
[Black "Jan Hein Donner"]
[ECO "A07"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "96"]

1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 Nf6
7. h3 O-O 8. Qd2 e5 9. Bh6 Nd4 10. Bxg7 Kxg7 11. Nge2 Be6
12. f4 Nd7 13. O-O f6 14. Nd1 b5 15. Ne3 Nb6 16. c3 Nc6 17. f5
Bd7 18. h4 Ne7 19. g4 gxf5 20. gxf5 Be8 21. Bf3 Bf7 22. Ng4
Ng8 23. Kh2 Qe7 24. Rg1 Kh8 25. Rg2 d5 26. Rag1 dxe4 27. Bxe4
Rad8 28. Qe3 Bxa2 29. h5 Bd5 30. h6 c4 31. Nf2 cxd3 32. Rg7
Rf7 33. Bxd3 Nxh6 34. R7g3 Qf8 35. Rh3 Ng8 36. Ng3 Bc6 37. Be4
Nc4 38. Qf3 Nd2 39. Qh5 Nxe4 40. Ngxe4 Rdd7 41. Rg6 Rg7
42. Qh4 Rdf7 43. b4 Ne7 44. Rxg7 Rxg7 45. Rd3 Nxf5 46. Qh5 Ne7
47. Qd1 Rg8 48. Qd2 Nf5 0-1

[Event "Beverwijk I"]
[Site "?"]
[Date "1965.??.??"]
[EventDate "1965.??.??"]
[Round "13"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Svein Johannessen"]
[ECO "A89"]
[WhiteElo "2500"]
[BlackElo "2273"]
[PlyCount "107"]

1. c4 f5 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. O-O O-O 6. d4 d6
7. Nc3 Nc6 8. d5 Ne5 9. Nxe5 dxe5 10. e4 e6 11. Qb3 Kh8
12. Be3 Qe7 13. f3 c6 14. dxc6 bxc6 15. Qa4 Bd7 16. Qa5 Qd8
17. Qxd8 Rfxd8 18. Rfd1 Rdb8 19. b3 Be8 20. Bc5 Nd7 21. Bd6
Rb7 22. Na4 g5 23. Nc5 Nxc5 24. Bxc5 a5 25. Bd6 Kg8 26. Re1 a4
27. b4 a3 28. Rab1 fxe4 29. fxe4 Bf8 30. Bxf8 Kxf8 31. Bf1
Rab8 32. Re3 Rxb4 33. Rxb4 Rxb4 34. Rxa3 Ke7 35. Ra7+ Bd7
36. Kf2 c5 37. Ke3 Ra4 38. Rxa4 Bxa4 39. Bd3 Kd6 40. Be2 Be8
41. h4 h6 42. hxg5 hxg5 43. Kf2 Ba4 44. Kf3 Ke7 45. Bd3 Bd1+
46. Ke3 Kd6 47. Kd2 Ba4 48. Be2 Kd7 49. Bh5 Kd6 50. Kc3 Kc7
51. Bg4 Kd6 52. Kd3 Ke7 53. Ke3 Kd6 54. Be2 1/2-1/2

[Event "Beverwijk I"]
[Site "?"]
[Date "1965.??.??"]
[EventDate "1965.??.??"]
[Round "14"]
[Result "1-0"]
[White "A Medina-Garcia"]
[Black "Jan Hein Donner"]
[ECO "B15"]
[WhiteElo "2380"]
[BlackElo "2500"]
[PlyCount "51"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6 6. c3
Bd6 7. Bd3 O-O 8. Qh5 g6 9. Qh4 Nd7 10. Ne2 c5 11. O-O Qb6
12. Bc4 cxd4 13. cxd4 f5 14. Nc3 Qb4 15. Bb3 Be7 16. Bg5 Bxg5
17. Qxg5 Qxd4 18. Nd5 Qxb2 19. Rae1 Kg7 20. Nc7 Rb8 21. Ne8+
Kg8 22. Re7 Nc5 23. Nf6+ Kg7 24. Nh5+ Kg8 25. Nf6+ Kg7
26. Rxf7+ 1-0

[Event "Beverwijk I"]
[Site "?"]
[Date "1965.??.??"]
[EventDate "1965.??.??"]
[Round "15"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "T Van Scheltinga"]
[ECO "E52"]
[WhiteElo "2500"]
[BlackElo "2325"]
[PlyCount "143"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6
7. O-O Bb7 8. cxd5 exd5 9. Ne5 a6 10. Ne2 Bd6 11. b3 Nbd7
12. Bb2 Re8 13. f4 Ne4 14. Bxe4 dxe4 15. Ng3 Nf6 16. Nf5 Bf8
17. Qe2 Nd5 18. g4 f6 19. Nc4 c5 20. dxc5 Bxc5 21. Bd4 Bxd4
22. Nxd4 b5 23. Nb2 Rc8 24. Qd2 Qb6 25. Rac1 Rxc1 26. Rxc1
Nxf4 27. exf4 e3 28. Qd3 e2 29. Re1 Re4 30. Rxe2 Rxe2 31. Qxe2
Qxd4+ 32. Kf1 Qxf4+ 33. Ke1 Kf7 34. Nd3 Qd4 35. Nf2 g6 36. h3
Bg2 37. h4 Bd5 38. Qc2 Qe5+ 39. Kf1 Qa1+ 40. Ke2 Qe5+ 41. Kf1
Bf3 42. Qc1 Qg3 43. Qe3 Qg2+ 44. Ke1 Bxg4 45. Qa7+ Ke8
46. Qe3+ Kf8 47. Qc5+ Kg7 48. Qe7+ Kh6 49. Qxf6 Qg1+ 50. Kd2
Bf5 51. Ke2 Qg3 52. Qxa6 Qe5+ 53. Kf3 Kh5 54. a4 Kxh4 55. Qxb5
Qc3+ 56. Kg2 Qg3+ 57. Kf1 Qf3 58. Qc4+ Kg5 59. a5 h5 60. Qc5
Kh4 61. Qd4+ Kg5 62. a6 Qxb3 63. a7 Qb1+ 64. Kg2 Qb7+ 65. Kg1
Qa8 66. Qd2+ Kf6 67. Qb2+ Kf7 68. Qb8 Be4 69. Nxe4 Qxe4
70. a8=Q Qe1+ 71. Kh2 Qh4+ 72. Kg2 1-0

[Event "12th Clare Benedict Cup"]
[Site "West Berlin FRG"]
[Date "1965.04.04"]
[EventDate "?"]
[Round "1"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Wolfgang Unzicker"]
[ECO "E55"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "55"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 c5 7.O-O
dxc4 8.Bxc4 Nbd7 9.Qe2 a6 10.a4 b6 11.Rd1 cxd4 12.exd4 Bb7
13.d5 exd5 14.Nxd5 Nxd5 15.Bxd5 Bxd5 16.Rxd5 Qc7 17.Be3 Nf6
18.Rd4 Bc5 19.Rc4 Qe7 20.Nd4 Nd5 21.a5 Nxe3 22.fxe3 b5 23.Rc2
Rfe8 24.Qf2 Ba7 25.Nc6 Qxe3 26.Nxa7 Qxf2+ 27.Kxf2 Rxa7 28.Rd1
1/2-1/2

[Event "EU-chT (Men)"]
[Site "Hamburg, Germany"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "9"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Wolfgang Unzicker"]
[ECO "E55"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "43"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 c5 7.O-O
dxc4 8.Bxc4 Nbd7 9.Qe2 a6 10.a3 Ba5 11.Rd1 b5 12.Bd3 Bb7
13.Bd2 Bb6 14.dxc5 Nxc5 15.Bc2 Ncd7 16.Rac1 Qe7 17.Nb1 Rac8
18.Bb4 Bc5 19.Bxc5 Rxc5 20.Nc3 Rfc8 21.Ne1 Ne5 22.Nd3 1/2-1/2

[Event "EU-chT (Men)"]
[Site "Hamburg, Germany"]
[Date "1965.??.??"]
[EventDate "?"]
[Round "4"]
[Result "0-1"]
[White "Wolfgang Unzicker"]
[Black "Jan Hein Donner"]
[ECO "B99"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "74"]

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.Bxf6 Nxf6 11.g4 Nd7 12.g5 Nc5
13.h4 b5 14.a3 Rb8 15.b4 Na4 16.Nxa4 bxa4 17.f5 exf5 18.Nxf5
O-O 19.Rh3 Bxf5 20.exf5 Rfc8 21.Rd2 a5 22.f6 Bf8 23.b5 d5
24.Kb1 Re8 25.Rxd5 Rbc8 26.c4 Re1+ 27.Rd1 Qe5 28.Ka2 Rd8
29.Bd3 Rxd1 30.Qxd1 Rd4 31.Qc2 gxf6 32.gxf6 Qxf6 33.Qg2+ Bg7
34.Re3 Re4 35.Qxg7+ Kxg7 36.Rxe4 Qc3 37.Rg4+ Kh6 0-1

[Event "Beverwijk (Netherlands)"]
[Site "Beverwijk (Netherlands)"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Istvan Bilek"]
[ECO "B06"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "114"]

1.d4 g6 2.e4 Bg7 3.c4 c5 4.d5 d6 5.Nc3 Nf6 6.Be2 O-O 7.Nf3 Bg4
8.O-O Na6 9.Bf4 Nc7 10.Qd2 Rb8 11.Bh6 Bxf3 12.Bxf3 Bxh6
13.Qxh6 b5 14.b3 bxc4 15.bxc4 e6 16.Rfb1 Qe7 17.Qc1 Rb6
18.Rxb6 axb6 19.Rb1 Nd7 20.Qd2 Rd8 21.Be2 exd5 22.exd5 Re8
23.f4 f5 24.Bd3 Qg7 25.Bc2 Qd4+ 26.Qxd4 cxd4 27.Ba4 dxc3
28.Bxd7 Re4 29.Rc1 Rxc4 30.g3 Kf7 31.Bc6 Rc5 32.Kf1 b5 33.Ke2
b4 34.Kd3 Nxd5 35.Bxd5+ Rxd5+ 36.Kc4 Rd2 37.Kxb4 Rxa2 38.Rxc3
Rxh2 39.Kc4 Rd2 40.Ra3 h5 41.Kc3 Rd1 42.Kc4 Kg7 43.Ra7+ Kh6
44.Ra8 Kg7 45.Ra7+ Kf6 46.Ra3 Rd2 47.Rb3 h4 48.gxh4 Rf2 49.Kd5
Rxf4 50.Rh3 Rf1 51.Rd3 Rh1 52.Rd4 Ke7 53.Ra4 Rd1+ 54.Kc4 Ke6
55.Kc3 Rh1 56.Kd3 Ke5 57.Ke3 f4+ 0-1

[Event "Hague (Netherlands)"]
[Site "Hague (Netherlands)"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Istvan Bilek"]
[Black "Jan Hein Donner"]
[ECO "D78"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "153"]

1.Nf3 d5 2.g3 g6 3.Bg2 Bg7 4.d4 Nf6 5.O-O O-O 6.c4 c6 7.Nbd2
Ne4 8.Qb3 b6 9.cxd5 Qxd5 10.Nxe4 Qxe4 11.Qc3 Bb7 12.Be3 Qe6
13.Ng5 Qc8 14.Qb3 Nd7 15.Rac1 Nf6 16.Bf4 Qd7 17.Rfd1 Rac8
18.Bh3 Qd5 19.Qxd5 Nxd5 20.Bxc8 Rxc8 21.Nf3 Nxf4 22.gxf4 e6
23.Rc2 f6 24.Kg2 Bf8 25.Rdc1 Kf7 26.e3 Bd6 27.a3 a5 28.Kf1 Ke7
29.Ke2 Kd7 30.Nd2 Ba6+ 31.Ke1 Bb7 32.Rc3 a4 33.h4 Ra8 34.f3
Kc7 35.Kf2 Be7 36.R3c2 Ra5 37.Ne4 Kd7 38.Rh1 e5 39.dxe5 fxe5
40.Rd2+ Kc7 41.Ng5 exf4 42.Ne6+ Kb8 43.Nxf4 Bc8 44.Kg3 Rb5
45.Rc1 Kb7 46.Rc4 Rb3 47.Rxa4 Rxe3 48.Re4 Rxe4 49.fxe4 Kc7
50.Ng2 Bd6+ 51.Kf3 b5 52.Ne3 Be7 53.h5 Bf6 54.hxg6 hxg6 55.Ng4
Be7 56.Kf4 g5+ 57.Kf3 Be6 58.Ne3 Bd6 59.Rc2 Kd7 60.Nf5 Be5
61.Kg4 Bf4 62.Rf2 Bc1 63.Rh2 Bf4 64.Rh7+ Kd8 65.Kf3 c5 66.Ra7
Bd7 67.Ne3 Be5 68.b3 Bc6 69.Rf7 Bb2 70.Rf5 Bxa3 71.Rxg5 Ke7
72.Nc2 Bb2 73.Rxc5 Bd7 74.Ke3 Kd6 75.Rd5+ Ke7 76.Nd4 b4 77.Kd3
1-0

[Event "Santa Monica  Rd: 4"]
[Site "Santa Monica  Rd: 4"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Robert James Fischer"]
[Black "Jan Hein Donner"]
[ECO "C89"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "68"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5
7. Bb3 O-O 8. c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6
12. d4 Bd6 13. Re1 Qh4 14. g3 Qh3 15. Be3 Bg4 16. Qd3 Nxe3
17. Rxe3 c5 18. Qf1 Qh6 19. Nd2 Rad8 20. Nf3 Bxf3 21. Rxf3
cxd4 22. cxd4 Qd2 23. Rd3 Qg5 24. Rc1 Rc8 25. Rdc3 Rxc3
26. bxc3 Ba3 27. Rc2 Rc8 28. c4 bxc4 29. Bxc4 Qf5 30. Bd3 Rxc2
31. Bxf5 Rc1 32. Qxc1 Bxc1 33. Kf1 Kf8 34. Ke2 h6 1/2-1/2

[Event "Santa Monica"]
[Site "08"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Borislav Ivkov"]
[Black "Jan Hein Donner"]
[ECO "B16"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "56"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ gxf6 6.Be2 Bf5
7.Nf3 e6 8.O-O Bg7 9.c4 O-O 10.Be3 Nd7 11.d5 Bg6 12.Qb3 Qc7
13.Rfd1 c5 14.Nh4 Rad8 15.Rd2 b6 16.Rad1 Rfe8 17.Qa4 Nf8
18.dxe6 Nxe6 19.Rd7 Qe5 20.Nf3 Qxb2 21.Rxd8 Rxd8 22.Rxd8+ Nxd8
23.Bf1 Ne6 24.Qxa7 Bf8 25.Qb8 Kg7 26.a4 Qb4 27.Bd2 Qb1 28.a5
bxa5 1/2-1/2

[Event "Santa Monica"]
[Site "17"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Borislav Ivkov"]
[ECO "A42"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "70"]

1.d4 g6 2.e4 Bg7 3.c4 d6 4.Nc3 e5 5.Nge2 Nc6 6.d5 Nce7 7.g3 f5
8.Bg2 Nf6 9.f3 O-O 10.O-O c6 11.Kh1 cxd5 12.cxd5 Qb6 13.Qb3
Qxb3 14.axb3 Bd7 15.Be3 a6 16.h3 Rac8 17.Rac1 h5 18.Rc2 Kh7
19.Rfc1 Bh6 20.Bxh6 Kxh6 21.Na4 Rxc2 22.Rxc2 Rc8 23.Rxc8 Nxc8
24.Kg1 b5 25.Nac3 b4 26.Nb1 Bb5 27.Nc1 Nb6 28.Kf2 Nbd7 29.Ke3
Nc5 30.Nd2 a5 31.f4 fxe4 32.Bxe4 exf4 33.Kxf4 Ncxe4 34.Nxe4
Nxe4 35.Kxe4 g5 0-1

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Borislav Ivkov"]
[ECO "E62"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "98"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nc6 7.d5
Na5 8.b3 c5 9.Bb2 a6 10.O-O Rb8 11.Nd2 b5 12.Qc2 e6 13.dxe6
fxe6 14.cxb5 axb5 15.Nce4 Bb7 16.Rad1 Qe7 17.Nxf6+ Bxf6
18.Bxf6 Rxf6 19.Ne4 Bxe4 20.Qxe4 b4 21.Qd3 Rb6 22.f4 Rf7
23.Rd2 Qf6 24.Rc1 Rc7 25.e4 Qe7 26.e5 d5 27.Rdc2 c4 28.Qe3 Qc5
29.Qxc5 Rxc5 30.bxc4 dxc4 31.Bf1 c3 32.Kf2 Kf7 33.Bd3 Rd5
34.Ke3 Rb8 35.Rb1 Rbd8 36.Be2 Nc6 37.Bc4 Rc5 38.Bd3 Ra5 39.Be4
Nd4 40.Rf2 Ra3 41.Bc2 Rxa2 42.Bxg6+ Kxg6 43.Rxa2 b3 44.Rxb3
Nxb3 45.Rc2 Rc8 46.Kd3 Nd2 47.g4 Nf3 48.Ke4 Nxh2 49.f5 Kg5 0-1

[Event "Santa Monica"]
[Site "Santa Monica"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "3"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Miguel Najdorf"]
[ECO "E60"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "82"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 c6 6.e4 d6 7.Nge2 e5
8.O-O Nbd7 9.Rb1 Re8 10.h3 a6 11.b4 b5 12.cxb5 axb5 13.Be3 Bb7
14.Re1 exd4 15.Nxd4 Ne5 16.a4 bxa4 17.Nxa4 Nc4 18.Bc1 c5
19.bxc5 Bxe4 20.Rb4 Bxg2 21.Rxe8+ Nxe8 22.Kxg2 dxc5 23.Nxc5
Rc8 24.Ncb3 Qe7 25.Rb5 Ned6 26.Rc5 Qe4+ 27.Nf3 Rxc5 28.Nxc5
Qc6 29.Nb3 h6 30.Bf4 Nf5 31.Qd8+ Kh7 32.Qc7 Qd5 33.Qc5 Qe4
34.Qa7 g5 35.Nd2 Nxd2 36.Bxd2 Qd5 37.Be3 Bf6 38.Qa6 Kg7 39.Qe2
Qe4 40.Kg1 Qb1+ 41.Kh2 Qe4 1/2-1/2

[Event "Santa Monica"]
[Site "Santa Monica"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "12"]
[Result "1-0"]
[White "Miguel Najdorf"]
[Black "Jan Hein Donner"]
[ECO "D25"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "75"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 Bg4 5.h3 Bh5 6.Bxc4 e6 7.O-O
a6 8.Be2 c5 9.Nbd2 Nc6 10.dxc5 Bxc5 11.a3 O-O 12.b4 Ba7 13.Bb2
Qe7 14.Ne5 Nxe5 15.Bxe5 Bxe2 16.Qxe2 Rfd8 17.Rac1 Rac8 18.Nb3
Nd5 19.e4 Nf6 20.Rfd1 Ne8 21.Rxc8 Rxc8 22.Bf4 h6 23.Be3 Bxe3
24.Qxe3 Nd6 25.Nc5 a5 26.Qd3 axb4 27.axb4 Ne8 28.e5 b6 29.Na6
Qg5 30.Qd7 Ra8 31.b5 g6 32.Qd4 Ng7 33.Qxb6 Qxe5 34.Qc6 Rf8
35.b6 Qe2 36.Ra1 Nf5 37.b7 Ne7 38.Qc7 1-0

[Event "Santa Barbara"]
[Site "Santa Barbara"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Petrosian"]
[ECO "A56"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "69"]

1. d4 Nf6 2. c4 c5 3. d5 g6 4. Nc3 Bg7 5. e4 d6 6. Nf3 O-O
7. Be2 e5 8. O-O Ne8 9. Ne1 f5 10. Nd3 Nd7 11. exf5 gxf5
12. f4 Qe7 13. g4 e4 14. Nf2 Bxc3 15. bxc3 fxg4 16. Nxg4 Kh8
17. Kh1 Ng7 18. Ne3 Nf6 19. Bd2 Ng8 20. Qe1 Nh6 21. Qg3 Ngf5
22. Qg5 Bd7 23. Rae1 Rf6 24. Nxf5 Nxf5 25. Rg1 Qf8 26. Bh5 Ng7
27. Rxe4 Nxh5 28. Qxh5 Re8 29. Rxe8 Bxe8 30. Qe2 Bg6 31. Rg3
Qc8 32. Kg2 Qf5 33. Re3 Rf8 34. h3 Qc2 35. Be1 1/2-1/2

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Lev Polugaevsky"]
[Black "Jan Hein Donner"]
[ECO "B87"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "77"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6
7. Bb3 b5 8. f4 Bb7 9. f5 e5 10. Nde2 Nbd7 11. Bg5 Be7 12. Ng3
Nc5 13. Bxf6 Bxf6 14. Bd5 Bxd5 15. Nxd5 Bh4 16. Qf3 O-O
17. O-O-O Rc8 18. Kb1 Nd7 19. Nf1 Bg5 20. h4 Bh6 21. Nh2 Nb6
22. Ng4 Nxd5 23. Rxd5 f6 24. Qd3 Rc6 25. Rd1 Qa8 26. a3 Rd8
27. Nxh6+ gxh6 28. Qd2 Qb7 29. Qxh6 Qg7 30. Qe3 Qg4 31. g3 Rd7
32. R1d3 Kf7 33. Qh6 Qg7 34. Qh5+ Ke7 35. Qd1 Qh6 36. b3 Rd8
37. Qe1 Rdc8 38. Qb4 Rd8 39. a4 1-0

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Lev Polugaevsky"]
[Black "Jan Hein Donner"]
[ECO "B87"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6
7. Bb3 b5 8. f4 Bb7 9. f5 e5 10. Nde2 Nbd7 11. Bg5 Be7 12. Ng3
Nc5 13. Bxf6 Bxf6 14. Bd5 Bxd5 15. Nxd5 Bh4 16. Qf3 O-O
17. O-O-O Rc8 18. Kb1 Nd7 19. Nf1 Bg5 20. h4 Bh6 21. Nh2 Nb6
22. Ng4 Nxd5 23. Rxd5 f6 24. Qe3 Rc6 25. Rhd1 Qa8 26. a3 Rd8
27. Nxh6+ gxh6 28. Qd2 Qb7 29. Qxh6 Qg7 30. Qe3 Qg4 31. g3 Rd7
32. R1d3 Kf7 33. Qh6 Qg7 34. Qh5+ Ke7 35. Qd1 Qh6 36. b3 Rd8
37. Kb2 Rd7 38. Kb1 Rd8 39. Qe1 Rdc8 40. Qb4 Rd8 41. a4
1/2-1/2

[Event "Beverwijk (Netherlands)"]
[Site "It"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "9"]
[Result "1-0"]
[White "Lev Polugaevsky"]
[Black "Jan Hein Donner"]
[ECO "B87"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6
7. Bb3 b5 8. f4 Bb7 9. f5 e5 10. Nde2 Nbd7 11. Bg5 Be7 12. Ng3
Nc5 13. Bxf6 Bxf6 14. Bd5 Bxd5 15. Nxd5 Bh4 16. Qf3 O-O
17. O-O-O Rc8 18. Kb1 Nd7 19. Nf1 Bg5 20. h4 Bh6 21. Nh2 Nb6
22. Ng4 Nxd5 23. Rxd5 f6 24. Qd3 Rc6 25. Rd1 Qa8 26. a3 Rd8
27. Nxh6+ gxh6 28. Qd2 Qb7 29. Qxh6 Qg7 30. Qe3 Qg4 31. g3 Rd7
32. R1d3 Kf7 33. Qh6 Qg7 34. Qh5+ Ke7 35. Qd1 Qh6 36. b3 Rd8
37. Kb2 Rd7 38. Kb1 Rd8 39. Qe1 Rdc8 40. Qb4 Rd8 41. a4 1-0

[Event "Santa Monica"]
[Site "Santa Monica"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "7"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Lajos Portisch"]
[ECO "D35"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "72"]

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 c6 6.e3 Nbd7 7.Bd3
Be7 8.Qc2 O-O 9.Nf3 Re8 10.O-O Nf8 11.Rab1 a5 12.a3 Ng6 13.b4
axb4 14.axb4 Ne4 15.Bxe7 Qxe7 16.Rfc1 Bg4 17.Ne1 Rad8 18.Na4
b5 19.Nc5 Nd6 20.Ra1 Nc4 21.Rcb1 Ra8 22.Qc3 Nh4 23.Rxa8 Rxa8
24.Ra1 Qd8 25.g3 Nf3+ 26.Nxf3 Bxf3 27.Bf5 h5 28.Bh3 h4 29.Bg2
Rxa1+ 30.Qxa1 Bxg2 31.Kxg2 Qc8 32.f3 hxg3 33.Kxg3 Nd6 34.Kg2
Nf5 35.Qd1 Nh4+ 36.Kg3 Nf5+ 1/2-1/2

[Event "Santa Monica"]
[Site "16"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Lajos Portisch"]
[Black "Jan Hein Donner"]
[ECO "A33"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "37"]

1.c4 c5 2.Nf3 Nf6 3.Nc3 Nc6 4.d4 cxd4 5.Nxd4 e6 6.g3 Bb4 7.Bg2
O-O 8.O-O d5 9.cxd5 exd5 10.Be3 Re8 11.Rc1 Bg4 12.Qb3 Bxc3
13.Rxc3 Nxd4 14.Bxd4 Bxe2 15.Rfc1 Ne4 16.Rc7 Ba6 17.Qf3 Ng5
18.Qf5 Bc4 19.Rxb7 1-0

[Event "Santa Monica (09)"]
[Site "Santa Monica (09)"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Boris Spassky"]
[ECO "E44"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "50"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Ne2 O-O 6. a3 Bxc3+
7. Nxc3 d5 8. b4 Bb7 9. cxd5 Nxd5 10. Nxd5 Qxd5 11. f3 Qg5
12. Qc2 Rc8 13. e4 Qe7 14. Be3 Nd7 15. Be2 c5 16. dxc5 bxc5
17. b5 a6 18. O-O axb5 19. Bxb5 Ba6 20. a4 h6 21. Qc3 Bxb5
22. axb5 Qd6 23. Rfd1 Rxa1 24. Qxa1 Qc7 25. Qc3 Qb7 1/2-1/2

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Laszlo Szabo"]
[Black "Jan Hein Donner"]
[ECO "A07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "69"]

1.Nf3 d5 2.g3 Bg4 3.Bg2 Nd7 4.c4 e6 5.Qa4 c6 6.cxd5 Bxf3
7.Bxf3 exd5 8.d4 Bd6 9.Nc3 f5 10.Qc2 g6 11.h4 h5 12.Bf4 Bxf4
13.gxf4 Ngf6 14.e3 Kf7 15.O-O-O Qe7 16.Kb1 Ne4 17.Bxe4 fxe4
18.Rdg1 Rag8 19.Rh3 Nf6 20.Rg5 Ng4 21.Qe2 Nh6 22.Rh1 Nf5
23.Qc2 Rc8 24.Qb3 b6 25.Ne2 Qf6 26.Ng3 Nd6 27.Rc1 Qe6 28.Re5
Qd7 29.Qd1 Kf6 30.f3 exf3 31.Qxf3 Nf7 32.f5 Nxe5 33.dxe5 Kg7
34.Rg1 Rcf8 35.Nxh5+ 1-0

[Event "DEN"]
[Site "DEN"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Dragoljub Velimirovic"]
[Black "Jan Hein Donner"]
[ECO "C44"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "35"]

1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. c3 d3 5. Bxd3 d6 6. h3 Nf6
7. O-O Be7 8. Nd4 O-O 9. Nd2 Re8 10. f4 Bf8 11. Qc2 g6
12. N2f3 Nd7 13. Bc4 Nb6 14. Bd3 Nb8 15. f5 N8d7 16. fxg6 fxg6
17. Bg5 Nf6 18. Qb3+ 1-0

[Event "Santa Monica"]
[Site "Santa Monica"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Wolfgang Unzicker"]
[ECO "E55"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "85"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5
7. O-O dxc4 8. Bxc4 Nbd7 9. Qe2 a6 10. a3 Ba5 11. Bd3 Bc7
12. Rd1 Qe7 13. dxc5 Nxc5 14. Bc2 Ncd7 15. Bd2 Rd8 16. Rac1
Nf8 17. e4 e5 18. Bg5 Be6 19. Nh4 h6 20. Nf5 Bxf5 21. Bxf6
Qxf6 22. exf5 Rd4 23. Be4 Bb6 24. Bxb7 Ra7 25. Be4 Rad7
26. Nd5 Qd8 27. Qf3 Nh7 28. Rxd4 Bxd4 29. f6 Nxf6 30. Nxf6+
gxf6 31. Bf5 Rc7 32. Rd1 a5 33. h4 Qb8 34. b4 axb4 35. Rb1 Rc3
36. Qg4+ Kf8 37. axb4 Qa7 38. Qe2 Ra3 39. Rc1 Ra1 40. Rxa1
Qxa1+ 41. Kh2 Bb6 42. Qd2 Kg7 43. Kg3 1/2-1/2

[Event "Santa Monica"]
[Site "Santa Monica"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1/2-1/2"]
[White "Bent Larsen"]
[Black "Jan Hein Donner"]
[ECO "B67"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "115"]

1. e4 c5 2. Nf3 d6 3. Nc3 Nc6 4. d4 cxd4 5. Nxd4 Nf6 6. Bg5 e6
7. Qd2 a6 8. O-O-O Bd7 9. f4 h6 10. Bh4 Nxe4 11. Qe1 Nf6
12. Nf5 Qa5 13. Nxd6+ Bxd6 14. Rxd6 O-O-O 15. Rd2 Ne7 16. Qe5
Qxe5 17. fxe5 Nf5 18. Bxf6 gxf6 19. exf6 Bc6 20. Bd3 Rhg8
21. Ne4 Ne3 22. g3 Bxe4 23. Bxe4 Rxd2 24. Kxd2 Ng4 25. Bd3 Kd7
26. a4 a5 27. b4 axb4 28. Rb1 Nxh2 29. Rxb4 Kc7 30. a5 Nf3+
31. Ke2 Ne5 32. Be4 Nc6 33. Rc4 Ra8 34. Bxc6 bxc6 35. Ra4 h5
36. Kf3 Rg8 37. Rb4 Ra8 38. Ra4 Rg8 39. a6 Kb6 40. a7 Ra8
41. Kf4 Rxa7 42. Rxa7 Kxa7 43. Ke5 Kb6 44. Kd6 Kb5 45. Ke7 e5
46. Kxf7 e4 47. Kg6 e3 48. f7 e2 49. f8=Q e1=Q 50. Qb8+ Ka6
51. Kxh5 Qh1+ 52. Kg6 Qe4+ 53. Kf6 Qxc2 54. g4 Qf2+ 55. Kg6 c5
56. g5 c4 57. Qc8+ Kb5 58. Qf5+ 1/2-1/2

[Event "Santa Monica"]
[Site "Santa Monica"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "6"]
[Result "1-0"]
[White "Samuel Reshevsky"]
[Black "Jan Hein Donner"]
[ECO "E55"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "71"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 d5 6. Nf3 O-O
7. O-O dxc4 8. Bxc4 Nbd7 9. Bd3 b6 10. a3 cxd4 11. exd4 Bxc3
12. bxc3 Bb7 13. Re1 Qc7 14. Bd2 Rfe8 15. Qe2 Rac8 16. Rac1
Bd5 17. c4 Bb7 18. a4 Qc6 19. Bf4 Qxa4 20. Ra1 Qc6 21. Rxa7
Ra8 22. Rxa8 Rxa8 23. h3 Ra3 24. d5 exd5 25. cxd5 Qxd5 26. Bc4
Qc5 27. Bxf7+ Kxf7 28. Qe6+ Kg6 29. Bd6 Qa5 30. Ne5+ Nxe5
31. Rxe5 Ra1+ 32. Kh2 Qa8 33. Qf5+ Kf7 34. Re7+ Kg8 35. Be5
Re1 36. Rxg7+ 1-0

[Event "Santa Monica"]
[Site "Santa Monica"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "10"]
[Result "1/2-1/2"]
[White "Wolfgang Unzicker"]
[Black "Jan Hein Donner"]
[ECO "D19"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "61"]

1. Nf3 d5 2. c4 c6 3. d4 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. e3 e6
7. Bxc4 Bb4 8. O-O O-O 9. Qe2 Bg4 10. h3 Bh5 11. Rd1 Nbd7
12. e4 Qe7 13. e5 Nd5 14. Ne4 f5 15. exf6 gxf6 16. Ng3 Bg6
17. Bh6 Rfe8 18. Bd2 a5 19. Bxb4 axb4 20. Bb3 Ra5 21. Re1 Nf8
22. Qd2 Rea8 23. Rac1 Nb6 24. Ne4 Nxa4 25. Rc4 Rb5 26. Bxa4
Rxa4 27. Nc5 Raa5 28. Rxb4 b6 29. Rxb5 Rxb5 30. Ne4 Rb3
31. Qf4 1/2-1/2

[Event "Santa Monica"]
[Site "Santa Monica"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "11"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Bent Larsen"]
[ECO "D72"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 d5 5. cxd5 Nxd5 6. e4 Nb6
7. Ne2 Nc6 8. d5 Nb8 9. O-O O-O 10. a4 e6 11. Nbc3 exd5
12. exd5 Re8 13. Qb3 c6 14. Be3 Nxd5 15. Nxd5 cxd5 16. Bxd5
Qe7 17. Nd4 Nd7 18. Rfe1 Nc5 19. Qc4 Bh3 20. Nf3 Ne6 21. Qb3
a5 22. Qxb7 Qxb7 23. Bxb7 Rab8 24. Bc6 Rec8 25. Bb5 Bxb2
26. Ra2 Bf6 27. Rc1 Bd4 28. Rac2 Rxc2 29. Rxc2 Bxe3 30. fxe3
Bf5 31. Rc3 Rd8 32. Kf2 Be4 33. h4 Kg7 34. Ke2 h6 35. Nd2 Bd5
36. Nc4 Rc8 37. Kd3 Nc5+ 38. Kd4 Be4 39. Ra3 f5 40. Nd6 Ne6+
41. Ke5 1-0

[Event "Santa Monica"]
[Site "Santa Monica"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "13"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Robert James Fischer"]
[ECO "E67"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "56"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nbd7
7. O-O e5 8. e4 c6 9. Rb1 a6 10. b4 exd4 11. Nxd4 Re8 12. h3
Ne5 13. Qe2 b5 14. cxb5 cxb5 15. Rd1 Bb7 16. f4 Nc4 17. Qd3
Rc8 18. Kh2 Qc7 19. Rb3 Re7 20. Re1 Rce8 21. Nc2 Qc8 22. Ne3
Nxe3 23. Rxe3 Nxe4 24. Bxe4 Bxe4 25. Qxd6 Rd7 26. Qc5 Rc7
27. Nxe4 Rxc5 28. Nxc5 Bd4 0-1

[Event "Santa Monica"]
[Site "Santa Monica"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "15"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Samuel Reshevsky"]
[ECO "E67"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "82"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nbd7
7. O-O e5 8. e4 c6 9. Rb1 a6 10. h3 Re8 11. Be3 b5 12. c5 b4
13. Ne2 Nxe4 14. cxd6 Nxd6 15. Nxe5 Nxe5 16. dxe5 Bxe5 17. Rc1
Bb7 18. Nd4 Qd7 19. Qb3 c5 20. Nf3 Ne4 21. Rfd1 Qb5 22. Nxe5
Rxe5 23. Bf4 Re6 24. Qd3 Rae8 25. Qxb5 axb5 26. f3 g5 27. fxe4
gxf4 28. Rxc5 Bxe4 29. Rxb5 Bxg2 30. Kxg2 Re2+ 31. Kf3 fxg3
32. Kxg3 R8e3+ 33. Kf4 Rxh3 34. Rg1+ Kf8 35. Rxb4 Rf2+ 36. Ke5
Re3+ 37. Kd5 Rd2+ 38. Kc6 Ree2 39. Rb1 h5 40. a4 Rc2+ 41. Kb6
h4 1/2-1/2

[Event "Hoogovens 28th"]
[Site "Beverwijk"]
[Date "1966.01.12"]
[EventDate "?"]
[Round "13"]
[Result "1/2-1/2"]
[White "Miroslav Filip"]
[Black "Jan Hein Donner"]
[ECO "D58"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "38"]

1.d4 Nf6 2.Nf3 d5 3.c4 e6 4.Nc3 Be7 5.Bg5 h6 6.Bh4 O-O 7.e3 b6
8.Rc1 Bb7 9.cxd5 Nxd5 10.Bxe7 Qxe7 11.Bd3 Rc8 12.O-O Nxc3
13.Rxc3 Nd7 14.Qe2 c5 15.Ba6 cxd4 16.Rxc8+ Bxc8 17.Nxd4 Bxa6
18.Qxa6 Nc5 19.Qc4 a5 1/2-1/2

[Event "The Hague zt"]
[Site "The Hague"]
[Date "1966.09.12"]
[EventDate "?"]
[Round "5"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Georgi P Tringov"]
[ECO "E61"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "34"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 c5 6.e3 d6 7.Nge2
Nc6 8.O-O Bd7 9.h3 a6 10.b3 Rb8 11.Bb2 b5 12.cxb5 axb5 13.dxc5
dxc5 14.Rc1 c4 15.bxc4 bxc4 16.Na4 Nb4 17.Rxc4 Nxa2 1/2-1/2

[Event "The Hague zt"]
[Site "The Hague"]
[Date "1966.09.12"]
[EventDate "?"]
[Round "11"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Svetozar Gligoric"]
[ECO "E66"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "54"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 c5 5.Nf3 O-O 6.Nc3 d6 7.O-O
Nc6 8.d5 Na5 9.Nd2 e5 10.Qc2 Ng4 11.b3 f5 12.Bb2 e4 13.Nd1
Bxb2 14.Qxb2 Qf6 15.Qxf6 Nxf6 16.f3 exf3 17.exf3 Bd7 18.Re1
Rfe8 19.Nc3 Rxe1+ 20.Rxe1 Re8 21.Rxe8+ Nxe8 22.f4 Kf7 23.Kf2
Ke7 24.h3 b6 25.Bf3 Nf6 26.Nf1 a6 27.Be2 b5 1/2-1/2

[Event "Hoogovens 28th"]
[Site "Beverwijk"]
[Date "1966.01.12"]
[EventDate "?"]
[Round "2"]
[Result "1/2-1/2"]
[White "Milko Bobotsov"]
[Black "Jan Hein Donner"]
[ECO "D46"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "44"]

1.c4 Nf6 2.d4 e6 3.Nf3 d5 4.Nc3 c6 5.e3 Nbd7 6.Bd3 Bb4 7.O-O
O-O 8.Bd2 Qe7 9.Ne5 Nxe5 10.dxe5 Nd7 11.f4 f6 12.a3 Bc5 13.b4
Bb6 14.c5 Bc7 15.Qh5 g6 16.Qh4 Qg7 17.exf6 Qxf6 18.Qxf6 Nxf6
19.e4 dxe4 20.Nxe4 Nxe4 21.Bxe4 e5 22.fxe5 Rxf1+ 1/2-1/2

[Event "Hoogovens 28th"]
[Site "Beverwijk"]
[Date "1966.01.12"]
[EventDate "?"]
[Round "6"]
[Result "1-0"]
[White "F Kuijpers"]
[Black "Jan Hein Donner"]
[ECO "C70"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "75"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 5.Bb3 Na5 6.O-O d6 7.d4
Nxb3 8.axb3 f6 9.Nh4 Qd7 10.Nc3 Ne7 11.dxe5 dxe5 12.Qf3 c6
13.h3 Qe6 14.Rd1 g6 15.Be3 Bg7 16.Bc5 O-O 17.Rd6 Qf7 18.Qd3
Be6 19.Nf3 Rfc8 20.Qd1 g5 21.Ne2 Ng6 22.Rd3 h5 23.b4 g4
24.hxg4 hxg4 25.Nh2 f5 26.exf5 Bxf5 27.Rg3 Rd8 28.Qc1 Qe6
29.Rga3 Qc4 30.Qg5 Qxc2 31.Nc3 Rf8 32.Nxg4 Rf7 33.Ne3 Qd2
34.Rd1 Qxb2 35.Nxf5 Qxa3 36.Qxg6 Rxf5 37.Rd7 Qc1+ 38.Nd1 1-0

[Event "Hoogovens 28th"]
[Site "Beverwijk"]
[Date "1966.01.12"]
[EventDate "?"]
[Round "14"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Iivo Nei"]
[ECO "D30"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "94"]

1.d4 d5 2.c4 c6 3.Nf3 e6 4.e3 Nf6 5.Nbd2 c5 6.dxc5 Bxc5 7.a3
a5 8.cxd5 exd5 9.Bb5+ Bd7 10.Bxd7+ Nbxd7 11.O-O O-O 12.b3 Ne4
13.Bb2 Re8 14.Nxe4 dxe4 15.Nd2 Ra6 16.Qh5 Rh6 17.Qg4 Rg6
18.Qf5 Qe7 19.Rfd1 Nb6 20.Rac1 Bxa3 21.Bxa3 Qxa3 22.Nxe4 h6
23.g3 Qxb3 24.Nd6 Rf8 25.Rb1 Qa4 26.Nxb7 Nc4 27.Ra1 Qb4
28.Nxa5 Nd6 29.Qd5 Qg4 30.Nc6 Rf6 31.Rd4 Qe2 32.Rd2 Qb5
33.Qxb5 Nxb5 34.Ne7+ Kh7 35.Ra5 Nc3 36.Rc2 Ne4 37.Nd5 Rd6
38.g4 Rfd8 39.Nf4 Rd1+ 40.Kg2 R1d2 41.Raa2 Rxc2 42.Rxc2 Nf6
43.Kf3 g5 44.Nh5 Nxh5 45.gxh5 Kg7 46.Kg3 Rd1 47.h4 Rg1+
1/2-1/2

[Event "Haag zt"]
[Site "Haag"]
[Date "1966.??.??"]
[EventDate "1966.??.??"]
[Round "10"]
[Result "0-1"]
[White "M F Littleton"]
[Black "Jan Hein Donner"]
[ECO "B95"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "44"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6
7. Qf3 Be7 8. O-O-O Nbd7 9. Rg1 Qc7 10. g4 b5 11. Be3 b4
12. Nce2 Bb7 13. g5 Bxe4 14. Qh3 Nd5 15. g6 Nc5 16. gxf7+ Kxf7
17. Ng3 Bg6 18. Be2 Bf6 19. Kb1 b3 20. axb3 Bxd4 21. Bxd4 Nb4
22. Bh5 Nxb3 0-1

[Event "Santa Monica"]
[Site "?"]
[Date "1966.??.??"]
[EventDate "?"]
[Round "14"]
[Result "1-0"]
[White "Petrosian"]
[Black "Jan Hein Donner"]
[ECO "A07"]
[WhiteElo "2645"]
[BlackElo "2500"]
[PlyCount "109"]

1. Nf3 d5 2. g3 g6 3. Bg2 Bg7 4. O-O e5 5. d3 Ne7 6. Nbd2 O-O
7. e4 c5 8. exd5 Nxd5 9. Nb3 Nd7 10. Re1 Rb8 11. Nfd2 Nc7
12. Na5 Ne6 13. Nac4 Qc7 14. Ne4 Nb6 15. Nc3 Bd7 16. a4 Bc6
17. Nb5 Bxb5 18. axb5 Nxc4 19. dxc4 b6 20. c3 Rfe8 21. Ra6 Re7
22. Qa4 Rc8 23. Bd5 Qb8 24. Bxe6 fxe6 25. Qd1 Rd8 26. Qg4 Ree8
27. h4 Rd7 28. h5 gxh5 29. Qxh5 Rf8 30. Qg4 Rf6 31. Be3 Rg6
32. Qe4 Bf8 33. Raa1 Bd6 34. Red1 Rgg7 35. Rd2 Bf8 36. Rxd7
Rxd7 37. Qg4+ Kf7 38. Qh3 Kf6 39. Rf1 Qe8 40. Qh4+ Kg7
41. Bh6+ Kg8 42. Bxf8 Kxf8 43. Re1 Qf7 44. Rxe5 Qg6 45. Kg2
Qf7 46. Re4 Ke8 47. Rf4 Qe7 48. Qh5+ Kd8 49. Qe5 Kc8 50. Qe4
Kb8 51. Rh4 Qf7 52. Rf4 Qe7 53. Qf3 Qd6 54. Rf8+ Rd8 55. Rf6
1-0

[Event "Beverwijk I"]
[Site "?"]
[Date "1966.??.??"]
[EventDate "1966.??.??"]
[Round "1"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Moshe Czerniak"]
[ECO "A42"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "71"]

1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 e5 5. d5 Ne7 6. h4 f5 7. h5
O-O 8. hxg6 hxg6 9. Bg5 f4 10. Be2 Nd7 11. Bg4 Nf6 12. Bxf6
Bxf6 13. Be6+ Kg7 14. Qg4 Rh8 15. Rh3 a6 16. Nf3 b5 17. O-O-O
Rxh3 18. Qxh3 Bxe6 19. dxe6 bxc4 20. Rh1 Qh8 21. Qxh8+ Rxh8
22. Rxh8 Kxh8 23. Nd5 Nxd5 24. exd5 Kg7 25. Nd2 Kf8 26. Kc2 c6
27. Nxc4 cxd5 28. Nb6 Ke7 29. Nxd5+ Kxe6 30. Nc7+ Kd7 31. Nxa6
e4 32. f3 e3 33. Nb4 Bd8 34. Kd3 g5 35. Nd5 Kc6 36. Nb4+
1/2-1/2

[Event "Beverwijk I"]
[Site "?"]
[Date "1966.??.??"]
[EventDate "1966.??.??"]
[Round "3"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Dr. Heinz Lehmann"]
[ECO "D46"]
[WhiteElo "2500"]
[BlackElo "2395"]
[PlyCount "81"]

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. e3 Nbd7 6. Bd3 Be7
7. O-O dxc4 8. Bxc4 b5 9. Bd3 a6 10. e4 b4 11. Na4 c5 12. dxc5
Nxc5 13. Nxc5 Bxc5 14. Qe2 Bb7 15. e5 Nd5 16. Ng5 Be7 17. Nxh7
g6 18. Nf6+ Bxf6 19. exf6 Qxf6 20. Be4 Qh4 21. h3 Nc3 22. bxc3
Bxe4 23. Bg5 Qxg5 24. Qxe4 Rc8 25. cxb4 Rxh3 26. Qb7 Rd8
27. Qxa6 Rh4 28. Qc6+ Ke7 29. Qc5+ Qxc5 30. bxc5 Rc8 31. Rfc1
Rh5 32. a4 Rhxc5 33. Rxc5 Rxc5 34. a5 Rc7 35. a6 Ra7 36. f4
Kd6 37. Kf2 Kc5 38. Ke3 Kb6 39. Ke4 f6 40. g4 Ra8 41. a7 1-0

[Event "Beverwijk I"]
[Site "?"]
[Date "1966.??.??"]
[EventDate "1966.??.??"]
[Round "4"]
[Result "0-1"]
[White "Arovah Bachtiar"]
[Black "Jan Hein Donner"]
[ECO "E59"]
[WhiteElo "2360"]
[BlackElo "2500"]
[PlyCount "88"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nf3 O-O 6. Bd3 d5
7. O-O Nc6 8. a3 Bxc3 9. bxc3 dxc4 10. Bxc4 Qc7 11. Bd3 e5
12. Qc2 Re8 13. Bb5 e4 14. Bxc6 Qxc6 15. Ne5 Qd6 16. Qe2 b6
17. f3 exf3 18. Qxf3 Be6 19. Bb2 Bd5 20. Qf4 c4 21. Rae1 Ne4
22. Qh4 f6 23. Ng4 Qe6 24. Re2 Rad8 25. Nf2 f5 26. Nxe4 Bxe4
27. Ree1 Rd5 28. Qf4 Rb5 29. Rf2 Rb3 30. h3 a5 31. g4 Rb5
32. Kh2 h6 33. Rg1 g5 34. Qg3 fxg4 35. hxg4 Bd3 36. Bc1 Rb3
37. Bd2 Rxa3 38. e4 Bxe4 39. Re1 Ra2 40. Qc7 Rf8 41. Ree2
Rxf2+ 42. Rxf2 Bd5 43. Qd8+ Kh7 44. Qf8 Ra1 0-1

[Event "Beverwijk I"]
[Site "?"]
[Date "1966.??.??"]
[EventDate "1966.??.??"]
[Round "7"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "C B Van den Berg"]
[ECO "D28"]
[WhiteElo "2500"]
[BlackElo "2450"]
[PlyCount "54"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6
7. Qe2 b5 8. Bd3 cxd4 9. exd4 Bb7 10. a4 bxa4 11. Rxa4 Be7
12. Nc3 O-O 13. Rd1 a5 14. Bg5 Nc6 15. Bxf6 Bxf6 16. d5 exd5
17. Nxd5 g6 18. Rf4 Bg7 19. Bc4 Kh8 20. h4 h6 21. Re4 a4
22. h5 g5 23. g4 a3 24. bxa3 Rxa3 25. Ne3 Qa8 26. Bd5 Nd8
27. Bxb7 Qxb7 1/2-1/2

[Event "Beverwijk I"]
[Site "?"]
[Date "1966.??.??"]
[EventDate "1966.??.??"]
[Round "10"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "T Van Scheltinga"]
[ECO "E52"]
[WhiteElo "2500"]
[BlackElo "2325"]
[PlyCount "69"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6
7. O-O Bb7 8. Qe2 Nbd7 9. Rd1 c5 10. Bd2 Qe7 11. cxd5 exd5
12. a3 Bxc3 13. Bxc3 Ne4 14. Be1 Rfd8 15. dxc5 Ndxc5 16. Nd4
Nxd3 17. Qxd3 Nc5 18. Qf5 Rd6 19. Rac1 Rad8 20. Qc2 Rg6 21. b4
Ne6 22. b5 h5 23. Nxe6 Qxe6 24. Qc7 Rd7 25. Qb8+ Kh7 26. Rd4
Rg4 27. Bc3 Qg6 28. Rxg4 Qxg4 29. Bd4 h4 30. h3 Qe4 31. Qxa7
Rd6 32. f3 Qd3 33. Qxb7 Rg6 34. Qc7 Qe2 35. Qc2 1-0

[Event "Beverwijk I"]
[Site "?"]
[Date "1966.??.??"]
[EventDate "1966.??.??"]
[Round "11"]
[Result "0-1"]
[White "Mato Damjanovic"]
[Black "Jan Hein Donner"]
[ECO "B43"]
[WhiteElo "2314"]
[BlackElo "2500"]
[PlyCount "98"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Nc3 Qc7 6. f4 b5
7. Bd3 Bb7 8. Qf3 Nf6 9. Be3 Nc6 10. h3 Nxd4 11. Bxd4 Bc5
12. Bxc5 Qxc5 13. a3 d6 14. g4 O-O 15. Qf2 Rfc8 16. O-O Kf8
17. Rae1 Qxf2+ 18. Rxf2 Ke7 19. e5 dxe5 20. Rxe5 Nd7 21. Re3
Nb6 22. f5 Nc4 23. Bxc4 bxc4 24. fxe6 fxe6 25. Rfe2 Rc6
26. Nd5+ Kd7 27. Nf4 Re8 28. Nh5 Re7 29. Ng3 Rb6 30. b4 cxb3
31. cxb3 Rf7 32. b4 Rd6 33. Kh2 Rf3 34. Rxf3 Bxf3 35. Rb2 Rd3
36. a4 e5 37. b5 e4 38. b6 Kc8 39. Rc2+ Kb7 40. a5 e3 41. Rc7+
Kb8 42. Nf5 e2 43. Re7 Rd1 44. Re8+ Kb7 45. Re7+ Kc8 46. Re8+
Kd7 47. Re7+ Kd8 48. b7 Rb1 49. Re3 Kc7 0-1

[Event "Beverwijk I"]
[Site "?"]
[Date "1966.??.??"]
[EventDate "1966.??.??"]
[Round "12"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Kick Langeweg"]
[ECO "E54"]
[WhiteElo "2500"]
[BlackElo "2309"]
[PlyCount "93"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5
7. O-O dxc4 8. Bxc4 b6 9. a3 Bxc3 10. bxc3 Ba6 11. Bxa6 Nxa6
12. Qe2 Qc8 13. e4 h6 14. Bf4 Qb7 15. Rfe1 cxd4 16. cxd4 Rac8
17. Ne5 Nb8 18. Qf3 Nbd7 19. Re3 Rc2 20. Nxd7 Qxd7 21. Be5 Nh7
22. d5 Rfc8 23. h4 f6 24. dxe6 Qxe6 25. Bg3 Nf8 26. Rd1 Rc1
27. Kh2 Rxd1 28. Qxd1 Nd7 29. Rd3 Ne5 30. Rd8+ Rxd8 31. Qxd8+
Kh7 32. f3 b5 33. Qa5 a6 34. Qb4 h5 35. Kg1 Qb6+ 36. Bf2 Qc6
37. Be3 Qc2 38. Qc5 Qd1+ 39. Kh2 Qe2 40. Kh3 a5 41. Bf4 Qc4
42. Qd6 Nd3 43. Bd2 b4 44. axb4 axb4 45. Qd7 b3 46. Qf5+ Kg8
47. Qd7 1/2-1/2

[Event "13th Clare Benedict Cup"]
[Site "Brunnen, Switzerland"]
[Date "1966.05.13"]
[EventDate "?"]
[Round "1"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Wolfgang Unzicker"]
[ECO "E53"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "65"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 c5 7.a3
cxd4 8.exd4 Bxc3+ 9.bxc3 dxc4 10.Bxc4 Qe7 11.Qd3 Nbd7 12.O-O
e5 13.Nxe5 Nxe5 14.dxe5 Qxe5 15.f4 Qc7 16.Be3 Bf5 17.Qxf5 Qxc4
18.Bd4 Nd5 19.Rf3 f6 20.Qe6+ Kh8 21.Re1 h6 22.Qd7 b5 23.Rg3
Rg8 24.Rg6 a5 25.Re5 Nxf4 26.Rc5 Qe6 27.Qxe6 Nxe6 28.Rxb5 Rgb8
29.Rb6 Rxb6 30.Bxb6 Nf4 31.Rg4 g5 32.Kf2 a4 33.Bd4 1/2-1/2

[Event "Spain"]
[Site "Palma de Majorca"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Mikhail Botvinnik"]
[ECO "D79"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "74"]

1.d4 Nf6 2.c4 g6 3.g3 c6 4.Bg2 d5 5.cxd5 cxd5 6.Nf3 Bg7 7.O-O
O-O 8.Nc3 Nc6 9.Qb3 Ne4 10.Rd1 Na5 11.Qb4 Nxc3 12.Qxc3 Bf5
13.Bf4 Rc8 14.Qe1 Qb6 15.b3 Nc6 16.Qd2 Be4 17.Be3 Qb4 18.Ne1
Qxd2 19.Rxd2 e5 20.dxe5 Bxe5 21.Rc1 Nb4 22.Rxc8 Rxc8 23.Bxe4
dxe4 24.Rd7 Rc7 25.Rxc7 Bxc7 26.a3 Nc6 27.Nc2 Be5 28.f3 f5
29.Kf2 Kf7 30.Bd2 Ke6 31.a4 Bd4+ 32.Kg2 a6 33.fxe4 fxe4 34.g4
Be5 35.h3 Ne7 36.Kf2 Nd5 37.Nb4 e3 0-1

[Event "Palma de Mallorca"]
[Site "10"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Borislav Ivkov"]
[Black "Jan Hein Donner"]
[ECO "B17"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "75"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Bc4 Ngf6 6.Ng5 e6
7.Qe2 Nb6 8.Bd3 h6 9.N5f3 c5 10.dxc5 Bxc5 11.Ne5 Nbd7 12.Ngf3
Nxe5 13.Nxe5 O-O 14.O-O b6 15.Rd1 Qe7 16.b4 Bd6 17.Bb2 Bb7
18.a3 Rfd8 19.Re1 Nd7 20.Nc4 Bc7 21.Qg4 Nf6 22.Qh4 Nd5 23.Qe4
g6 24.Qd4 f6 25.Qh4 Kg7 26.Ne3 Nxe3 27.Rxe3 Qf7 28.Rae1 g5
29.Qg4 e5 30.h4 Kf8 31.hxg5 hxg5 32.Rh3 Bc8 33.Bf5 Qg6 34.Bxc8
Raxc8 35.Rd3 Ke7 36.Red1 Rxd3 37.Rxd3 Rd8 38.Qc4 1/2-1/2

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Alexander Kotov"]
[Black "Jan Hein Donner"]
[ECO "A17"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "111"]

1.c4 Nf6 2.Nc3 e6 3.Nf3 d5 4.cxd5 exd5 5.d4 c6 6.Bg5 Be7 7.e3
O-O 8.Bd3 Ne4 9.Bxe4 Bxg5 10.Bd3 Be7 11.Qc2 g6 12.O-O Nd7
13.Rab1 a5 14.a3 Bd6 15.b4 Nf6 16.Na4 axb4 17.axb4 Ne4 18.Nc5
Qe7 19.Nxe4 dxe4 20.Bxe4 Bxb4 21.Ne5 Bd6 22.Nc4 Bc7 23.g3 Re8
24.Bd3 Ra7 25.Rb2 Qf6 26.Rfb1 h5 27.Nd2 h4 28.Ne4 Qe7 29.Qc5
Ra5 30.Qxe7 Rxe7 31.Nc5 hxg3 32.hxg3 b6 33.Nb3 Ra3 34.Rc1 Be6
35.Bc4 Bxg3 36.Nd2 Bh4 37.Rxb6 Bxc4 38.Nxc4 Ra2 39.Rb2 Ra6
40.Ne5 Re6 41.Rbc2 Bf6 42.Nxc6 Rd6 43.Kg2 Kg7 44.Rc5 Ra3
45.R1c3 Ra2 46.Nb4 Rd2 47.Rc2 Rd1 48.Rc1 Rxc1 49.Rxc1 g5
50.Kf3 Be7 51.Nc6 Rf6+ 52.Ke4 Bf8 53.Rc2 Bd6 54.d5 Rh6 55.Nd4
Rh4+ 56.f4 1-0

[Event "Olympiad"]
[Site "Habana (Cuba)"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "O'Kelly"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "31"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nc6 7.e5
dxe5 8.dxe5 Nd5 9.Nxd5 Qxd5 10.Qe2 Bf5 11.Bxf5 gxf5 12.O-O
Rad8 13.Be3 f6 14.exf6 Bxf6 15.c3 Qe6 16.Rfe1 1/2-1/2

[Event "Amsterdam IBM"]
[Site "05"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Ludek Pachman"]
[ECO "E45"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "52"]

1.d4 e6 2.c4 Bb4+ 3.Nc3 Nf6 4.e3 b6 5.Ne2 Ba6 6.Ng3 Bxc3+
7.bxc3 d5 8.Qf3 O-O 9.cxd5 exd5 10.Bxa6 Nxa6 11.Qe2 Qc8 12.f3
Re8 13.O-O h5 14.Qd3 c5 15.Bd2 Nc7 16.e4 h4 17.Nf5 dxe4
18.fxe4 Nxe4 19.Rae1 Nxd2 20.Qxd2 Rxe1 21.Qxe1 Qe6 22.Qxh4 Nd5
23.c4 Ne3 24.Ne7+ Kf8 25.Nd5 Kg8 26.Ne7+ Kf8 1/2-1/2

[Event "Havana Cap-mem"]
[Site "08"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Ludek Pachman"]
[Black "Jan Hein Donner"]
[ECO "A09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "49"]

1.Nf3 d5 2.c4 c6 3.e3 Nf6 4.Nc3 g6 5.d4 Bg7 6.Be2 O-O 7.O-O
dxc4 8.Bxc4 Nfd7 9.Qe2 e5 10.dxe5 Nxe5 11.Nxe5 Bxe5 12.f4 Bg7
13.e4 Nd7 14.Be3 Qe7 15.e5 Nb6 16.Ne4 Nxc4 17.Qxc4 Qe6 18.Qc3
b6 19.Rfd1 c5 20.Rd6 Qe7 21.Rad1 Be6 22.a4 Rfd8 23.a5 Rxd6
24.Rxd6 Qb7 25.Nf6+ 1/2-1/2

[Event "Venetie"]
[Site "06"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Ludek Pachman"]
[ECO "D17"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "80"]

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.Ne5 e6 7.f3
Bb4 8.e4 Bxe4 9.fxe4 Nxe4 10.Bd2 Qxd4 11.Nxe4 Qxe4+ 12.Qe2
Bxd2+ 13.Kxd2 Qd5+ 14.Kc2 Na6 15.Nxc4 O-O-O 16.Qe5 f6 17.Qxd5
cxd5 18.Na3 Nb4+ 19.Kd2 Kd7 20.Rc1 Rc8 21.Rc3 Rxc3 22.bxc3 Nc6
23.Be2 Rc8 24.Rb1 b6 25.Nb5 Ke7 26.g3 Rd8 27.Nd4 Na5 28.Kc2 g6
29.Nb3 Nxb3 30.Rxb3 d4 31.a5 dxc3 32.axb6 axb6 33.Kxc3 Rd6
34.Ra3 f5 35.Ra7+ Rd7 36.Ra6 Rd6 37.Bb5 Kf6 38.Ra7 h5 39.h4 e5
40.Rb7 f4 1/2-1/2

[Event "Venice"]
[Site "It"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Petrosian"]
[Black "Jan Hein Donner"]
[ECO "C11"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "96"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6
7. Be3 cxd4 8. Nxd4 Nb6 9. Bd3 Bd7 10. Qe2 Rc8 11. Ndb5 Na5
12. Nxa7 Ra8 13. Nab5 Nac4 14. Bc1 Bb4 15. O-O Na4 16. Bxc4
dxc4 17. Qxc4 Bc5+ 18. Kh1 Nxc3 19. Nxc3 Qb6 20. Ne4 Be7
21. Qe2 O-O 22. b3 Bc6 23. Bb2 Rfd8 24. Nd6 Qc5 25. a4 Bxd6
26. exd6 Qxd6 27. Rad1 Qe7 28. Qe5 f6 29. Qe3 Rd7 30. Rxd7
Qxd7 31. h3 Qd5 32. Rf2 Rd8 33. Kh2 Qf5 34. Bd4 h5 35. Rd2 Qe4
36. Qf2 Rd5 37. Be3 Rxd2 38. Qxd2 e5 39. fxe5 Qxe5+ 40. Bf4
Qd5 41. Qxd5+ Bxd5 42. c4 Be4 43. a5 g5 44. Bc7 h4 45. Bd8 Kf7
46. Kg1 Bc2 47. b4 Bd3 48. c5 Bb5 1/2-1/2

[Event "Havana"]
[Site "Havana"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Lev Polugaevsky"]
[Black "Jan Hein Donner"]
[ECO "D55"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "135"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. d4 Be7 5. Bg5 O-O 6. e3 h6
7. Bxf6 Bxf6 8. Rc1 c6 9. Bd3 dxc4 10. Bxc4 Nd7 11. Ne4 Be7
12. O-O b6 13. Qe2 Bb7 14. Rfd1 Qc7 15. Nc3 Rad8 16. e4 Rfe8
17. a3 Qb8 18. Ba2 c5 19. d5 exd5 20. Nxd5 Nf6 21. Nc3 Bc8
22. e5 Nh7 23. e6 fxe6 24. Bxe6+ Bxe6 25. Qxe6+ Kh8 26. Rxd8
Qxd8 27. Ne5 Ng5 28. Ng6+ Kh7 29. Qf5 Bf6 30. h4 Bxc3 31. Rxc3
Qd1+ 32. Kh2 Qd6+ 33. Nf4+ g6 34. Rd3 Rf8 35. Rxd6 Rxf5
36. hxg5 Rxf4 37. Rd7+ Kh8 38. Kg3 hxg5 39. Rxa7 b5 40. Rb7 b4
41. axb4 cxb4 42. Rd7 Rc4 43. b3 Rc3+ 44. Kg4 Rxb3 45. Kxg5
Rc3 46. f3 Rc2 47. g4 Kg8 48. Rb7 Rc3 49. f4 Rc4 50. Rb6 Kh7
51. Rb7+ Kg8 52. Rd7 Rc6 53. Rb7 Rc4 54. Rb6 Kh7 55. f5 gxf5
56. gxf5 Kg7 57. Rb7+ Kf8 58. Kg6 Rg4+ 59. Kf6 Ke8 60. Re7+
Kf8 61. Rd7 Ke8 62. Rb7 Rf4 63. Rb8+ Kd7 64. Kg5 Rc4 65. f6
Ke6 66. Rb7 Rc1 67. Re7+ Kd6 68. Re8 1/2-1/2

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Lajos Portisch"]
[ECO "E41"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "37"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 b6 6.Nf3 Bb7 7.Bd2
cxd4 8.exd4 O-O 9.O-O d5 10.cxd5 Bxc3 11.bxc3 Qxd5 12.Re1 Nbd7
13.h3 e5 14.c4 Qd6 15.Nxe5 Nxe5 16.dxe5 Qxd3 17.exf6 Qg6
18.Qg4 Qxf6 19.Rac1 1/2-1/2

[Event "Venetie"]
[Site "13"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Karl Robatsch"]
[Black "Jan Hein Donner"]
[ECO "B17"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "18"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Bc4 Ngf6 6.Ng5 e6
7.Qe2 Nb6 8.Bd3 Nbd5 9.N1f3 Bb4+ 1/2-1/2

[Event "05, Havana"]
[Site "05, Havana"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Vasily Smyslov"]
[ECO "D72"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "46"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 d5 5. cxd5 Nxd5 6. e4 Nb6
7. Ne2 O-O 8. O-O e6 9. a4 a5 10. Na3 Qe7 11. Bf4 Rd8 12. Qc1
Na6 13. Nc4 Nxc4 14. Qxc4 e5 15. dxe5 Bxe5 16. Bxe5 Qxe5
17. Nc3 c6 18. Rfd1 Be6 19. Qe2 Bb3 20. Rd2 Rd4 21. Rxd4 Qxd4
22. e5 Nc5 23. Ne4 Qxe5 0-1

[Event "Palma de Mallorca"]
[Site "Palma de Mallorca"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Vasily Smyslov"]
[Black "Jan Hein Donner"]
[ECO "B17"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "146"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Bc4 Ngf6 6. Ng5
e6 7. Qe2 Nb6 8. Bd3 h6 9. N5f3 c5 10. dxc5 Bxc5 11. Ne5 Nbd7
12. Ngf3 Nxe5 13. Nxe5 O-O 14. O-O b6 15. Rd1 Qe7 16. b4 Bd6
17. Nc6 Qc7 18. b5 Nd5 19. Bb2 Bxh2+ 20. Kh1 Bd6 21. Be4 Bb7
22. Bxd5 exd5 23. Qg4 f6 24. Qe6+ Kh8 25. Rxd5 Bxc6 26. bxc6
Bc5 27. Bd4 Bxd4 28. Rxd4 Rac8 29. Rd6 Rfe8 30. Qd5 Re5
31. Qd4 Rce8 32. f4 Rc5 33. Rd1 Qf7 34. Qd3 Qh5+ 35. Kg1 Qg4
36. Qf1 Re2 37. R6d2 Rxd2 38. Rxd2 Rxc6 39. Rd8+ Kh7 40. Qd3+
f5 41. Rd5 Rg6 42. Qd2 Re6 43. Re5 Rc6 44. Qd3 Rg6 45. Qd2 Rc6
46. Qd3 Qxf4 47. Rxf5 Qc4 48. Rf7+ Qxd3 49. cxd3 a5 50. Rd7 a4
51. Ra7 b5 52. Rb7 Rd6 53. Rxb5 Rxd3 54. Rb2 Ra3 55. Kh2 h5
56. g3 g5 57. Kg2 Rd3 58. Rb4 a3 59. g4 hxg4 60. Rxg4 Kg6
61. Ra4 Rd2+ 62. Kg3 Rxa2 63. Ra5 Ra1 64. Kg2 Kf6 65. Kh2 g4
66. Ra4 Ke5 67. Rxg4 Ra2+ 68. Kh3 Rb2 69. Ra4 a2 70. Kg3 Kd5
71. Kf3 Kc5 72. Ke3 Kb5 73. Ra8 Kc4 0-1

[Event "Santa Monica"]
[Site "Santa Monica"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Boris Spassky"]
[Black "Jan Hein Donner"]
[ECO "C86"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "69"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Qe2 b5 6. Bb3 Be7
7. O-O O-O 8. c3 d5 9. d3 d4 10. Rd1 Be6 11. Nbd2 Re8 12. Bxe6
fxe6 13. Nb3 dxc3 14. bxc3 Bd6 15. d4 Nd7 16. Bg5 Qc8 17. c4
Nxd4 18. Nbxd4 exd4 19. e5 Bf8 20. Rxd4 c6 21. Rh4 Be7
22. Bxe7 Rxe7 23. Ng5 h6 24. Ne4 Qc7 25. Nd6 Rd8 26. Rd1 Qb6
27. Rhd4 Rf8 28. Kh1 Qc5 29. f4 Nb6 30. Ne4 Qa3 31. Qg4 bxc4
32. Nf6+ Kh8 33. Rd8 Rc7 34. Qg6 gxf6 35. Qxf6+ 1-0

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "11"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Boris Spassky"]
[ECO "E47"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "82"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 b6
7. O-O Bb7 8. Bd2 d6 9. a3 Bxc3 10. Bxc3 Ne4 11. Be1 Nd7
12. Nd2 f5 13. Qc2 Nxd2 14. Bxd2 Qh4 15. Bc3 Bxg2 16. f4 Bxf1
17. Rxf1 cxd4 18. exd4 Nf6 19. d5 Rae8 20. dxe6 Ng4 21. Re1
Rf6 22. Qg2 Rfxe6 23. Rxe6 Rxe6 24. Qa8+ Kf7 25. Qb7+ Qe7
26. Qxe7+ Rxe7 27. Bxf5 h5 28. Bc2 Re2 29. Bd1 Re4 30. h3 Nf6
31. f5 Ke7 32. Kg2 Rxc4 33. Kf3 d5 34. Be2 Rh4 35. Bf1 Kd6
36. Be1 Re4 37. Bg3+ Kc5 38. Bf2+ d4 39. Ba6 Re8 40. Bd3 Kd5
41. Kf4 Ne4 0-1

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Laszlo Szabo"]
[ECO "E60"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 c5 5.Nf3 cxd4 6.Nxd4 Nc6 7.Nc2
d6 8.Nc3 Be6 9.b3 h5 10.h4 Ng4 11.Bd2 Qb6 12.O-O g5 13.Nd5
Bxd5 14.cxd5 Nd4 15.Nxd4 Qxd4 16.Bxg5 Qxa1 17.Qxa1 Bxa1
18.Rxa1 Rc8 19.Be4 Nf6 20.Bxf6 exf6 21.Rd1 Kf8 22.Rd4 Kg7
23.Kg2 Rc5 24.b4 Rc3 25.a4 Rhc8 26.Bd3 Ra3 27.a5 Rcc3 28.g4
Rcb3 29.gxh5 Ra4 30.Rg4+ Kh6 31.Rf4 Rbxb4 32.Rxf6+ Kxh5
33.Rxf7 Rxh4 34.e3 Rxa5 35.Rh7+ Kg5 36.f4 Kg4 37.Be2+ Kf5
38.Rxh4 Ke4 39.Bf3+ Kxe3 40.f5 Rc5 41.Re4+ 1-0

[Event "Havana"]
[Site "Havana"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "9"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Mark Taimanov"]
[ECO "E40"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "66"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 Nc6 5.Nf3 O-O 6.Qc2 d5 7.a3
Bxc3+ 8.Qxc3 a5 9.b3 Bd7 10.Bb2 a4 11.b4 dxc4 12.Bxc4 Na7
13.d5 exd5 14.Bxd5 Nb5 15.Qe5 Nd6 16.O-O h6 17.Ba2 Re8 18.Qc3
Be6 19.Bxe6 Rxe6 20.Rfd1 Re7 21.Qc2 Nfe8 22.Re1 Qc8 23.e4 b5
24.Nd2 f6 25.f4 Ra6 26.e5 fxe5 27.fxe5 Nf7 28.Qc5 Qd7 29.Ne4
Rg6 30.Rad1 Qg4 31.Rd2 Rd7 32.Qf2 Rxd2 33.Qxd2 c6 1/2-1/2

[Event "Venice it"]
[Site "ITA"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Esteban Canal"]
[ECO "A84"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "47"]

1.d4 e6 2.c4 f5 3.e3 Nf6 4.Bd3 g6 5.Nf3 Bg7 6.O-O O-O 7.Nc3
Nc6 8.Re1 d6 9.e4 fxe4 10.Bxe4 Nxe4 11.Nxe4 Qd7 12.b3 Rb8
13.Be3 Ne7 14.Bd2 Nc6 15. Bc3 Nd8 16.Qd3 Qf7 17.Re3 Qf5 18.d5
Bh6 19.Nd4 Qf7 20.Rf3 Qe7 21.Nxe6 Nxe6 22.Nf6+ Kh8 23.dxe6 Bg7
24.Nd5 1-0

[Event "Venice it"]
[Site "ITA"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Enrico Paoli"]
[ECO "D43"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "67"]

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6 5.Bg5 h6 6.Bxf6 Qxf6 7.e3
Nd7 8.Qb3 a5 9.Be2 Bb4 10.a3 Bxc3+ 11.Qxc3 O-O 12.O-O Re8
13.cxd5 exd5 14.b4 axb4 15.axb4 Rxa1 16.Rxa1 Qd6 17.Ne1 b5
18.Nd3 Bb7 19.Ra7 Qb8 20.Qa1 Nb6 21. Nc5 Bc8 22.Qa5 g6 23.h3
Kg7 24.Nd3 Be6 25.Bg4 Nc4 26.Qc7 Qc8 27.Qxc8 Bxc8 28.Rc7 Bxg4
29.hxg4 Re6 30.Nc5 Rf6 31.Nd7 Re6 32.Nb8 Re4 33.Nxc6 Rxg4
34. Nd8 1-0

[Event "Venice it"]
[Site "ITA"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "3"]
[Result "1/2-1/2"]
[White "Levente Lengyel"]
[Black "Jan Hein Donner"]
[ECO "D78"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "30"]

1.c4 Nf6 2.Nf3 g6 3.d4 Bg7 4.g3 O-O 5.Bg2 c6 6.O-O d5 7.Nbd2
Ne4 8.b3 Bf5 9.Bb2 Nxd2 10.Qxd2 Be4 11.Rfd1 a5 12.Qf4 a4
13.Qe3 axb3 14.axb3 Rxa1 15.Bxa1 Qb6 1/2-1/2

[Event "Venice it"]
[Site "ITA"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "4"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Josef Kupper"]
[ECO "E45"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "97"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Nge2 Ba6 6.a3 Bxc3+
7.Nxc3 d5 8.b3 O-O 9.Be2 dxc4 10.bxc4 Nc6 11.a4 Na5 12.Ba3 Re8
13.Nb5 c6 14.Nd6 Re7 15. O-O Ne8 16.Nxe8 Rxe8 17.Qc2 Qc7
18.Rfd1 Rad8 19.Qc3 c5 20.dxc5 bxc5 21. Rxd8 Rxd8 22.Rb1 f6
23.Bf1 Nb7 24.Qc2 Qd7 25.h3 Kh8 26.Be2 Qc7 27.Qe4 Rd6 28.Bd3
f5 29.Qe5 Rc6 30.Qc3 Rb6 31.Rd1 Kg8 32.Bf1 Rd6 33.Qe5 Bxc4
34. Bxc5 Rc6 35.Qxc7 Rxc7 36.Bxa7 Bxf1 37.Kxf1 Rc4 38.Rd7 Na5
39.Bd4 g6 40. Rg7+ Kf8 41.Rxh7 Nc6 42.Bf6 Rxa4 43.Rg7 e5
44.Rxg6 Ra1+ 45.Ke2 Kf7 46.Rh6 Ra2+ 47.Kf3 Ra3 48.g4 f4 49.Ke4
1-0

[Event "Venice it"]
[Site "ITA"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "5"]
[Result "0-1"]
[White "Sylvain Zinser"]
[Black "Jan Hein Donner"]
[ECO "E94"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "84"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 O-O 5.Nf3 d6 6.Be2 e5 7.O-O c6
8.Rb1 Nbd7 9.d5 c5 10.Ne1 Ne8 11.g4 f5 12.f3 fxg4 13.fxg4 Qh4
14.Ng2 Qh3 15. Rxf8+ Nxf8 16.g5 h6 17.Qf1 hxg5 18.Bxg5 Nh7
19.Bd2 Bh6 20.Bxh6 Qxh6 21. Qc1 Ng5 22.Qe3 Nf6 23.Rf1 Kg7
24.Bd3 Bd7 25.h4 Nh3+ 26.Kh1 Qxe3 27.Nxe3 Nf4 28.Bc2 Rh8
29.Rf2 g5 30.Nb5 Ne8 31.Nxa7 Ng6 32.Nf5+ Bxf5 33.Rxf5 Nxh4
34.Rf2 Nf6 35.Nb5 Ng4 36.Re2 Nf3+ 37.Kg2 Nd4 38.Nxd4 exd4
39.Kg3 Ne5 40. Bb3 Rh4 41.a3 Rf4 42.Ba2 d3 0-1

[Event "Venice it"]
[Site "ITA"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "7"]
[Result "0-1"]
[White "Antonio Magrin"]
[Black "Jan Hein Donner"]
[ECO "E52"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "104"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 b6 7.O-O
Bb7 8.Ne2 Bd6 9.Ne5 c5 10.f4 cxd4 11.Nxd4 Nbd7 12.Nxd7 Qxd7
13.cxd5 Bxd5 14.Bd2 Ne4 15.Be1 Bc5 16.Rf3 Bxd4 17.exd4 Bb7
18.Bxe4 Bxe4 19.Rg3 f6 20.Bf2 Rf7 21. Qe2 Bd5 22.Rc1 Qd6
23.Qd2 Rd8 24.a3 h6 25.Rgc3 Bb7 26.Qe3 Rdd7 27.h4 Qd5 28.Qg3
Qf5 29.Be3 Kh7 30.Kh2 Qh5 31.Kg1 Rfe7 32.Bf2 Qf5 33.Be3 Qb5
34. Qf2 Rf7 35.Kh2 Kg8 36.Qc2 Qh5 37.Qf2 g5 38.g3 Rg7 39.Rg1
gxh4 40.g4 Rxg4 41.Rcc1 Rg3 42.f5 Rdg7 43.Qf4 e5 44.dxe5 Rg2+
45.Rxg2 Rxg2+ 46.Kh3 Rg3+ 47.Kh2 Qe2+ 48.Bf2 Rg2+ 49.Kh3 Rxf2
50.Qg4+ Qxg4+ 51.Kxg4 fxe5 52.Rc7 Be4 0-1

[Event "Venice it"]
[Site "ITA"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "8"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Larry Melvyn Evans"]
[ECO "A35"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "95"]

1.c4 c5 2.Nc3 Nc6 3.Nf3 g6 4.e3 Nf6 5.d4 Bg7 6.d5 Na5 7.Be2
O-O 8.O-O d6 9.Qc2 Bg4 10.b3 a6 11.Bb2 Rb8 12.e4 Bxf3 13.Bxf3
b5 14.cxb5 axb5 15. Be2 b4 16.Nd1 Nd7 17.Bxg7 Kxg7 18.Ne3 e5
19.dxe6 fxe6 20.Rad1 Ne5 21.Qd2 Nf7 22.f4 Nc6 23.f5 exf5
24.exf5 Nd4 25.f6+ Kh8 26.Bc4 Ne5 27.Nd5 Rb7 28. Rde1 Rbf7
29.Qg5 Ne6 30.Qh4 Nd4 31.Qg5 Ne6 32.Qh6 Nd4 33.Ne7 Nxc4
34. Nxg6+ Kg8 35.Ne7+ Kh8 36.bxc4 Re8 37.Re4 Qd7 38.Qh5 Rxf6
39.Rxf6 Rxe7 40. Qh6 Rf7 41.Rxd6 Qc8 42.Qg5 Nf3+ 43.gxf3 Rg7
44.Qxg7+ Kxg7 45.Re7+ Kh8 46. Rdd7 b3 47.Rxh7+ Kg8 48.Rdg7+
1-0

[Event "Venice it"]
[Site "ITA"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "10"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Stefano Tatai"]
[ECO "E63"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "91"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 c5 7.O-O
Nc6 8.d5 Na5 9.Nd2 a6 10.Qc2 e5 11.b3 Ng4 12.e4 f5 13.exf5
gxf5 14.Bb2 Bd7 15. Rae1 b5 16.Nd1 Nb7 17.h3 Nf6 18.f4 e4
19.Ne3 h5 20.g4 hxg4 21.hxg4 Nxg4 22.Nxg4 fxg4 23.Bxg7 Kxg7
24.Nxe4 Qh4 25.Ng5 Rae8 26.Ne6+ Bxe6 27.dxe6 Nd8 28.f5 g3
29.Bd5 Qh2+ 30.Qxh2 gxh2+ 31.Kh1 Kf6 32.Re4 Rg8 33.Ref4 Rg5
34.Be4 Rh8 35.Re1 Rhg8 36.Re2 Rh5 37.Rxh2 Rxh2+ 38.Kxh2 Ke5
39.Rh4 Re8 40.Kg3 b4 41.Kf3 d5 42.Bxd5 Kxf5 43.Rh5+ Kf6 44.Kf4
Nxe6+ 45.Bxe6 Rxe6 46.Rxc5 1-0

[Event "Venice it"]
[Site "ITA"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "11"]
[Result "0-1"]
[White "Remo Calapso"]
[Black "Jan Hein Donner"]
[ECO "B13"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "70"]

1.e4 c6 2.d4 d5 3.exd5 cxd5 4.Bd3 Nc6 5.c3 Nf6 6.h3 e5 7.dxe5
Nxe5 8. Bb5+ Nc6 9.Be3 Be7 10.Nf3 O-O 11.Nbd2 a6 12.Be2 Bf5
13.Nb3 Qc7 14.O-O Rad8 15.Nbd4 Bc8 16.Nxc6 bxc6 17.Qa4 Bb7
18.Bf4 Qc8 19.Rfe1 Ne4 20.Be3 c5 21.Nd2 f5 22.f3 f4 23.Bxf4
Rxf4 24.fxe4 dxe4 25.Bc4+ Kh8 26.Nf1 Rdf8 27. Red1 Bh4 28.Qd7
Bf2+ 29.Kh1 Qa8 30.Bd5 Bxd5 31.Rxd5 e3 32.Re5 Re4 33.Qe6 Rxe5
34.Qxe5 Qe8 35.Qxe8 Rxe8 0-1

[Event "Venice it"]
[Site "ITA"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "12"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Dragoljub Janosevic"]
[ECO "A77"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "91"]

1.d4 Nf6 2.c4 c5 3.d5 g6 4.Nc3 Bg7 5.Nf3 d6 6.e4 O-O 7.Be2 e6
8.O-O exd5 9.cxd5 Re8 10.Nd2 b6 11.f3 Ba6 12.Bxa6 Nxa6 13.Nc4
Qd7 14.a4 Nc7 15. Bf4 Bf8 16.g4 Rad8 17.Qd2 b5 18.axb5 Nxb5
19.Nxb5 Qxb5 20.Qd3 Rd7 21.Ra3 Rb8 22.Rfa1 Rbb7 23.Bd2 Rdc7
24.Ba5 Rc8 25.Bc3 Ne8 26.Rxa7 Rxa7 27.Rxa7 Bh6 28.e5 dxe5
29.Bxe5 Bf8 30.Qe4 Qb3 31.Kf2 Rd8 32.Qf4 f5 33.gxf5 Qc2+
34.Kg3 Qxf5 35.Qxf5 gxf5 36.Ne3 f4+ 37.Kxf4 Bh6+ 38.Ke4 Bxe3
39.Kxe3 Rxd5 40.Ke4 Rd2 41.Kf5 Rf2 42.Ke6 Rxf3 43.Re7 Rf8
44.h4 c4 45.h5 h6 46.Bc3 1-0

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "11"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Miroslav Filip"]
[ECO "D79"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "24"]

1.d4 Nf6 2.c4 g6 3.g3 c6 4.Bg2 d5 5.cxd5 cxd5 6.Nf3 Bg7 7.O-O
O-O 8.Nc3 Nc6 9.Qb3 Ne4 10.Rd1 Na5 11.Qb4 Nc6 12.Qb3 Na5
1/2-1/2

[Event "Palma de Mallorca"]
[Site "Palma de Mallorca"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "3"]
[Result "1/2-1/2"]
[White "Milan Matulovic"]
[Black "Jan Hein Donner"]
[ECO "B17"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "124"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Bc4 Ngf6 6.Ng5 e6
7.Qe2 Nb6 8.Bd3 c5 9.dxc5 Bxc5 10.N1f3 h6 11.Ne4 Nxe4 12.Qxe4
Nd5 13.O-O Bd7 14.Ne5 Bc6 15.b3 Qc7 16.Bb2 Nf6 17.Qc4 Bd6
18.Rfe1 O-O-O 19.Rad1 Rhg8 20.Bf1 Nd5 21.a3 g5 22.g3 h5
23.Nxc6 bxc6 24.Qa6+ Qb7 25.Qxb7+ Kxb7 26.c4 Ne7 27.b4 Rg6
28.Bd3 f5 29.Bf1 Bc7 30.Rxd8 Bxd8 31.Bg2 Kc8 32.a4 Bc7 33.b5
Bd6 34.Bd4 c5 35.Bc3 Kd7 36.a5 Rg8 37.Rd1 Nc8 38.Kf1 Ke7
39.Bc6 Rd8 40.Re1 Bc7 41.Bd5 Rd6 42.Bb7 Rd8 43.Re2 Kf7 44.Bc6
Rd1+ 45.Kg2 Rd3 46.Bd2 g4 47.h4 Nd6 48.Be3 Bxa5 49.Bxc5 Bb6
50.Bxb6 axb6 51.Rc2 Rb3 52.Kf1 Ke7 53.c5 Nxb5 54.cxb6 Nd4
55.Rc4 Rxb6 56.Rxd4 Rxc6 57.Ra4 e5 58.Ra7+ Kf6 59.Rh7 Kg6
60.Re7 f4 61.Rxe5 f3 62.Kg1 Rc1+ 1/2-1/2

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "15"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Svetozar Gligoric"]
[ECO "E60"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "39"]

1.d4 Nf6 2.c4 g6 3.g3 c6 4.Bg2 d5 5.cxd5 cxd5 6.Nc3 Bg7 7.Nf3
O-O 8.O-O Nc6 9.Qb3 e6 10.e3 b6 11.Bd2 Bb7 12.Rfc1 Qe7 13.Nb5
Ne4 14.Be1 Rfc8 15.Nd2 Na5 16.Qd1 Nxd2 17.Qxd2 Qd7 18.Nc3 Nc4
19.Qe2 Nd6 20.Rc2 1/2-1/2

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "9"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Svetozar Gligoric"]
[ECO "E60"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "38"]

1.d4 Nf6 2.c4 g6 3.g3 c6 4.d5 d6 5.Nc3 Bg7 6.Bg2 Kf8 7.Nf3 e5
8.O-O cxd5 9.cxd5 Nbd7 10.Ne1 a5 11.Nd3 b6 12.e4 Nc5 13.Nxc5
bxc5 14.Re1 Nd7 15.Bd2 Ba6 16.Bf1 Bxf1 17.Rxf1 f5 18.f3 Nf6
19.Qe2 a4 1/2-1/2

[Event "Palma de Mallorca"]
[Site "Palma de Mallorca"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Svetozar Gligoric"]
[ECO "E60"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "34"]

1.d4 Nf6 2.c4 g6 3.g3 c6 4.Bg2 d5 5.Nf3 Bg7 6.Nbd2 O-O 7.O-O
Bf5 8.b3 Ne4 9.Bb2 Qa5 10.Qc1 Nd7 11.Rd1 Nxd2 12.Nxd2 Nf6
13.Bc3 Qd8 14.Qb2 Qd7 15.Re1 Rfd8 16.Rad1 Bh3 17.Bh1 Rac8
1/2-1/2

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "16"]
[Result "1/2-1/2"]
[White "Bent Larsen"]
[Black "Jan Hein Donner"]
[ECO "A15"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "62"]

1.c4 Nf6 2.Nf3 e6 3.b3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O c5 7.Bb2
O-O 8.Nc3 d5 9.Ne5 Nbd7 10.f4 Nxe5 11.fxe5 Ng4 12.e4 Nxe5
13.exd5 Bf6 14.d4 Ng6 15.dxc5 exd5 16.Bxd5 Bxd5 17.cxd5 bxc5
18.Na4 Bxb2 19.Nxb2 Qg5 20.Nc4 f5 21.d6 f4 22.Qd2 Rf5 23.Rad1
Rd8 24.Kh1 fxg3 25.Qxg5 Rxg5 26.hxg3 Ne5 27.Rd5 Rh5+ 28.Kg2
Nxc4 29.Rxh5 Ne3+ 30.Kf2 Nxf1 31.Kxf1 Rxd6 1/2-1/2

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "5"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Bent Larsen"]
[ECO "B06"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "130"]

1.d4 g6 2.e4 Bg7 3.Be3 c5 4.Nc3 cxd4 5.Bxd4 Nf6 6.Nd5 O-O
7.Nxf6+ exf6 8.Bd3 d5 9.Ne2 dxe4 10.Bxe4 Qe7 11.Bd3 Nc6 12.Bc3
Rd8 13.O-O Bf5 14.Qd2 Ne5 15.Nd4 Bxd3 16.cxd3 Rd5 17.f4 Ng4
18.Nc2 Rad8 19.Rf3 f5 20.Bxg7 Kxg7 21.Ne1 Qc5+ 22.Kh1 Re8
23.h3 Kg8 24.Rc1 Qe7 25.Nc2 Rc5 26.hxg4 Rxc2 27.Qxc2 fxg4
28.Qf2 gxf3 29.Qxf3 b6 30.d4 Qe4 31.Qxe4 Rxe4 32.f5 Rxd4
33.Rc7 a5 34.f6 h5 35.Rc8+ Kh7 36.Rc7 Kg8 37.Rc8+ Kh7 38.Rc7
Rd6 39.Rxf7+ Kh6 40.Rf8 Kg5 41.f7 Kf6 42.b4 axb4 43.Kh2 Ke7
44.Re8+ Kxf7 45.Re4 b3 46.a4 Rd3 47.Rb4 Ke6 48.Rxb6+ Kd5 49.a5
Kc4 50.a6 Rd5 51.Rxg6 b2 52.Rb6 Kc3 53.Kg3 Ra5 54.Kh4 Kc2
55.a7 b1=Q 56.Rxb1 Kxb1 57.a8=Q Rxa8 58.Kxh5 Rh8+ 59.Kg4 Rg8+
60.Kf3 Kc2 61.g4 Kd3 62.Kf4 Kd4 63.Kf5 Kd5 64.g5 Rf8+ 65.Kg6
Ke6 0-1

[Event "Palma de Mallorca"]
[Site "Palma de Mallorca"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "7"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Bent Larsen"]
[ECO "E62"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "90"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 c6 7.O-O
Bf5 8.Nh4 Be6 9.d5 cxd5 10.cxd5 Bd7 11.Be3 Qa5 12.Bd4 Rc8
13.Nf3 Na6 14.h3 Qb4 15.a3 Qxb2 16.Ra2 Qxc3 17.Bxc3 Rxc3
18.Nd4 Nc5 19.e3 Rc8 20.Qb1 Ne8 21.Qb4 Rd3 22.Rb1 Nc7 23.Qe1
Bxd4 24.exd4 Rxd4 25.Qxe7 Nxd5 26.Qxd6 Be6 27.Rc2 b6 28.Re1
Ne3 29.Qxd4 Nxc2 30.Qd1 Nxe1 31.Qxe1 h5 32.Qd2 Nb3 33.Qd6 Kh7
34.g4 hxg4 35.hxg4 Rc1+ 36.Kh2 Rc4 37.f4 Rd4 38.Qe5 Rd2 39.Kg3
Rd3+ 40.Kh4 Nd4 41.Kg5 Rg3 42.Qxd4 Rxg4+ 43.Kf6 Rxg2 44.Qd1
Rg3 45.Qd6 g5 1/2-1/2

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "7"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Lothar M Schmid"]
[ECO "A41"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "125"]

1.d4 d6 2.g3 e5 3.c3 c6 4.e4 Be7 5.Bg2 Nf6 6.Ne2 O-O 7.O-O Re8
8.h3 Bf8 9.Nd2 g6 10.Qc2 Bg7 11.Rd1 Qc7 12.b3 d5 13.exd5 Bf5
14.Qb2 Nxd5 15.Nc4 Nd7 16.Ne3 Be6 17.dxe5 Nxe5 18.Nd4 Nxe3
19.Bxe3 Bd5 20.Bxd5 cxd5 21.Rac1 Qd7 22.Kg2 h5 23.Qd2 Rad8
24.Bg5 Rc8 25.Bf4 a6 26.Bxe5 Bxe5 27.Nf3 Rcd8 28.c4 d4 29.Qd3
Bf6 30.Re1 Qc6 31.Kh2 Kg7 32.Rxe8 Rxe8 33.Re1 Rxe1 34.Nxe1 Qe6
35.Nf3 Kf8 36.Kg2 Kg7 37.h4 Kf8 38.Kf1 Qh3+ 39.Ke1 Qe6+ 40.Kd2
Qd6 41.Kc2 Qa3 42.Kb1 Qe7 43.a4 Bg7 44.Kc2 Qa3 45.Nd2 Qa1
46.f4 Kg8 47.c5 Bf8 48.Ne4 Qa2+ 49.Kd1 Qb2 50.Qc2 Qxc2+
51.Kxc2 f5 52.Nf6+ Kf7 53.Nd7 Bg7 54.Kd3 Ke6 55.Nb6 Bf6 56.b4
Bd8 57.Kxd4 Bf6+ 58.Kd3 Bd8 59.Kc4 Bf6 60.b5 a5 61.c6 bxc6
62.bxc6 Kd6 63.c7 1-0

[Event "Zierikzee, ch Netherlands"]
[Site "?"]
[Date "1967.??.??"]
[EventDate "1967.??.??"]
[Round "1"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Tim Krabbe"]
[ECO "E62"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "94"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nc6
7. d5 Na5 8. b3 c5 9. Bb2 a6 10. Nd2 Rb8 11. O-O b5 12. Qc2 e6
13. Nd1 exd5 14. cxd5 Re8 15. e4 Bd7 16. f4 b4 17. Ne3 Ng4
18. Nxg4 Bxg4 19. Bxg7 Kxg7 20. Rfe1 Qf6 21. e5 dxe5 22. fxe5
Rxe5 23. Qxc5 Re2 24. Ne4 Rxg2+ 25. Kxg2 Bf3+ 26. Kg1 Bxe4
27. Rad1 Rb5 28. Qa7 Rxd5 29. Rxd5 Bxd5 30. Rf1 Qb2 31. Qf2
Qxf2+ 32. Kxf2 Kf6 33. Ke3+ Ke5 34. h4 f5 35. Re1 Be4 36. Rd1
Nc6 37. Rd7 h5 38. Rg7 Kf6 39. Rb7 a5 40. Kf4 Ke6 41. Kg5 Bb1
42. Rb5 Bxa2 43. Kxg6 Bxb3 44. Kxh5 Bd1+ 45. Kg5 b3 46. h5
Bxh5 47. Kxh5 Nb4 0-1

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "8"]
[Result "1/2-1/2"]
[White "F Kuijpers"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "72"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nc6 7.Be3
e5 8.fxe5 dxe5 9.d5 Ne7 10.O-O Ne8 11.Nb5 f5 12.c4 fxe4
13.Bxe4 Nf5 14.Bg5 Nf6 15.Nxe5 c6 16.Bxf5 cxb5 17.Bxc8 Rxc8
18.Qd4 Qd6 19.Ng4 Nxg4 20.Qxg4 Rxc4 21.Rxf8+ Bxf8 22.Qf3 h6
23.Rf1 hxg5 24.Qf7+ Kh8 25.Qxf8+ Qxf8 26.Rxf8+ Kg7 27.Rb8 Rc7
28.Kf2 Kf6 29.Ke3 Ke5 30.Rg8 Rc2 31.Rxg6 Rxg2 32.d6 Rxh2 33.d7
Rh3+ 34.Kd2 Rh8 35.Rxg5+ Kd6 36.Rxb5 Kc6 1/2-1/2

[Event "NED-ch"]
[Site "Zierikzee"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "9"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "F Kuijpers"]
[ECO "D37"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "149"]

1.d4 d5 2.c4 e6 3.Nc3 Be7 4.Nf3 Nf6 5.Bf4 O-O 6.e3 c5 7.Bd3
cxd4 8.exd4 b6 9.O-O Bb7 10.Qe2 Nc6 11.cxd5 Nxd5 12.Bg3 Nf6
13.Rfd1 Nb4 14.Bc4 Rc8 15.Ne5 Nbd5 16.Rac1 Nxc3 17.Rxc3 Nd5
18.Rb3 Bd6 19.Bd3 Rc7 20.Qh5 Nf6 21.Qh3 Be4 22.Ng4 Nxg4
23.Bxe4 f5 24.Bf3 Bxg3 25.Qxg3 Rc2 26.Bxg4 fxg4 27.Qxg4 Rfxf2
28.Qxe6+ Kh8 29.Qe4 Rxg2+ 30.Qxg2 Rxg2+ 31.Kxg2 Qd5+ 32.Kg1 g5
33.h3 h5 34.Rbd3 a5 35.a4 Kg7 36.b3 Kg6 37.Re1 Qf5 38.Ree3 Qd5
39.Kf2 Kf6 40.Kg1 Kg6 41.Kf2 Kg7 42.Rf3 Kg6 43.Rfe3 Kf6 44.Ke1
Qh1+ 45.Kd2 Qg2+ 46.Re2 Qd5 47.Kc3 Qc6+ 48.Kb2 Qd5 49.Rdd2 Kg6
50.Re5 Qd6 51.Ka2 Kh6 52.Rb5 Kg6 53.Rg2 Qxd4 54.Rbxg5+ Kh6
55.Rg6+ Kh7 56.R6g5 Kh6 57.Rb5 Qd6 58.h4 Qd4 59.Re2 Qd6
60.Rbe5 Qd4 61.Re6+ Kg7 62.Rc2 Qd8 63.Rec6 Qd4 64.R6c4 Qe3
65.Rg2+ Kh7 66.Rc7+ Kh6 67.Rc6+ Kh7 68.Rd6 Qc5 69.Rgd2 Qe3
70.Rc2 Kg8 71.Rd5 Qe4 72.Rg5+ Kf7 73.Rf2+ Ke7 74.Rxh5 Qe3
75.Rhf5 1-0

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "7"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Klaus V Darga"]
[ECO "E93"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "59"]

1.d4 g6 2.c4 Bg7 3.Nc3 Nf6 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.d5
Nbd7 8.O-O Nc5 9.Nd2 a5 10.Qc2 Ne8 11.Nb3 Nxb3 12.axb3 Bd7
13.Be3 b6 14.Qd2 f5 15.exf5 gxf5 16.f4 Nf6 17.Rae1 Qe7 18.fxe5
Qxe5 19.Bf3 Ne4 20.Bxe4 fxe4 21.Bf2 Rf4 22.g3 Rf3 23.Rxe4 Qf5
24.Rf4 Qd3 25.Rd1 Qxd2 26.Rxd2 Bxc3 27.bxc3 Rxc3 28.Bd4 Rxb3
29.Kg2 Rf8 30.Bf6 1/2-1/2

[Event "Hoogovens"]
[Site "Beverwijk"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "13"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Anatoly S Lutikov"]
[ECO "A50"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "38"]

1.d4 Nf6 2.c4 c6 3.Nc3 d5 4.cxd5 cxd5 5.Nf3 Nc6 6.Bf4 Qb6
7.Qb3 Qxb3 8.axb3 Bf5 9.e3 Rc8 10.Ne5 a6 11.Nxc6 Rxc6 12.b4 e5
13.dxe5 Bxb4 14.Bb5 axb5 15.exf6 gxf6 16.O-O Bxc3 17.bxc3 Rxc3
18.Rfd1 O-O 19.Rxd5 Be4 1/2-1/2

[Event "Zierikzee"]
[Site "Zierikzee"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Coenraad Zuidema"]
[Black "Jan Hein Donner"]
[ECO "B93"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "111"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 e5
7. Nf3 Nbd7 8. a4 Be7 9. Bc4 O-O 10. Qe2 Qc7 11. fxe5 Nxe5
12. Nxe5 dxe5 13. O-O Be6 14. Bxe6 fxe6 15. Kh1 Qc6 16. Bg5
Rf7 17. Rf3 Bb4 18. Bxf6 gxf6 19. Nd1 Kh8 20. Nf2 Rg8 21. h3
Rg6 22. Ng4 Rf8 23. Raf1 Kg7 24. Qf2 Bc5 25. Qh4 Qxe4 26. Rxf6
Rfxf6 27. Rxf6 Qxc2 28. Rxg6+ Qxg6 29. Qe1 Bd4 30. Nxe5 Qf5
31. Qg3+ Kf8 32. Nf3 Ba7 33. Qc7 Qd5 34. h4 h6 35. Kh2 Be3
36. Qc8+ Ke7 37. Qc7+ Qd7 38. Qc3 Bf2 39. Qg7+ Kd8 40. Qxd7+
Kxd7 41. g4 Kd6 42. g5 hxg5 43. hxg5 Be3 44. Kg3 Bc1 45. b3
Bb2 46. Kf4 Kd5 47. g6 Bc1+ 48. Kg4 Bh6 49. Ng5 Bg7 50. a5 Ke5
51. Nf7+ Kf6 52. Kh5 Ke7 53. Kg5 Kd7 54. Kf4 Ke7 55. Ke4 Bc3
56. Ng5 1/2-1/2

[Event "Clare Benedict Cup 14th"]
[Site "Leysin"]
[Date "1967.06.08"]
[EventDate "?"]
[Round "4"]
[Result "1/2-1/2"]
[White "Alexander Prameshuber"]
[Black "Jan Hein Donner"]
[ECO "A48"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "83"]

1.d4 Nf6 2.Nf3 g6 3.Bf4 Bg7 4.e3 d6 5.h3 O-O 6.Be2 Nfd7 7.O-O
e5 8.Bh2 e4 9.Nfd2 f5 10.c4 Nc6 11.Nc3 Nf6 12.a3 Qe7 13.Rc1
Nd8 14.Nd5 Qd7 15.b4 Ne8 16.b5 c6 17.Nf4 Qe7 18.Nb3 Nf6
19.bxc6 bxc6 20.Na5 g5 21.Nh5 Nxh5 22.Bxh5 f4 23.Rb1 d5 24.Qb3
Be6 25.Rfc1 Qd7 26.cxd5 Bxd5 27.Qc2 Qe7 28.Qc5 Qf6 29.Kh1 Kh8
30.Qc2 Nf7 31.Nb7 Rg8 32.Nc5 Nd6 33.Qc3 Qe7 34.a4 Rgf8 35.Na6
Bc4 36.Nc5 Bd5 37.Na6 Rac8 38.Qc5 Be6 39.Qb4 Bd5 40.Qc5 Be6
41.Qb4 Bd5 42.Qc5 1/2-1/2

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Theodor Ghitescu"]
[Black "Jan Hein Donner"]
[ECO "D32"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "49"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. e3 Nc6 6. a3 cxd4
7. exd4 Be7 8. cxd5 Nxd5 9. Bd3 Nf6 10. O-O O-O 11. Bg5 b6
12. Qe2 Bb7 13. Rad1 g6 14. Bc4 Nd5 15. Bh6 Nxc3 16. bxc3 Re8
17. d5 exd5 18. Bxd5 Qc7 19. Bxf7+ Kxf7 20. Qc4+ Kf6 21. Ng5
Bf8 22. Nxh7+ Qxh7 23. Qf4+ Ke6 24. Rfe1+ Ne5 25. Rxe5# 1-0

[Event "Palma de Mallorca"]
[Site "Palma de Mallorca"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1-0"]
[White "Jacek B Bednarski"]
[Black "Jan Hein Donner"]
[ECO "B06"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "96"]

1.e4 d6 2.d4 g6 3.Bc4 Bg7 4.Nf3 Nf6 5.Qe2 O-O 6.O-O c6 7.Bb3
Bg4 8.Nbd2 e6 9.c3 d5 10.e5 Nfd7 11.h3 Bxf3 12.Nxf3 c5 13.dxc5
Nc6 14.Bf4 Qa5 15.Rfe1 Qxc5 16.Rad1 Qa5 17.Qe3 Rfe8 18.h4 b5
19.h5 Qb6 20.hxg6 hxg6 21.Qd2 Rac8 22.g3 Na5 23.Bh6 Nc4 24.Qf4
Nxb2 25.Ng5 Re7 26.Bxg7 Kxg7 27.Rd4 Nc4 28.Kg2 Rh8 29.Bxc4
bxc4 30.Rdd1 Qc7 31.Nf3 Ree8 32.Ng5 Re7 33.Qxf7+ Rxf7 34.Nxe6+
Kg8 35.Nxc7 Nxe5 36.Rxe5 Rxc7 37.Re8+ Kg7 38.Rxh8 Kxh8 39.Rxd5
Rc6 40.a4 a6 41.Kf3 Kg7 42.Ke4 Re6+ 43.Kd4 Re2 44.f4 Ra2 45.a5
Ra4 46.f5 Kf6 47.Rd6+ Kxf5 48.Rxa6 Kg4 1-0

[Event "Palma de Mallorca"]
[Site "Palma de Mallorca"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "16"]
[Result "1/2-1/2"]
[White "Dr. Heinz Lehmann"]
[Black "Jan Hein Donner"]
[ECO "E43"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "114"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Bd3 Bb7 6.Nf3 O-O 7.O-O
d5 8.cxd5 exd5 9.Ne5 Bd6 10.f4 c5 11.Bd2 Nc6 12.Be1 cxd4
13.exd4 Nxd4 14.Bh4 Ne6 15.Bb5 Kh8 16.Nd7 Rg8 17.Ne4 Be7
18.Ne5 Qf8 19.Ng5 Nxg5 20.fxg5 Bd6 21.Nxf7+ Qxf7 22.gxf6 Be5
23.Rc1 gxf6 24.Bc6 Rg6 25.Bxb7 Qxb7 26.Rc2 Qd7 27.Qf3 Rd8
28.Rd2 Qd6 29.Kh1 Rh6 30.g3 Rg6 31.Rfd1 d4 32.Kg2 Rc8 33.Re2
Qc6 34.Qxc6 Rxc6 35. Kf3 Rg7 36.g4 Rd7 37.Bg3 d3 38.Red2 Bxg3
39.hxg3 Rcd6 40.Ke3 Kg7 41.Rf1 Rd4 42.Kf3 a5 43.Rh1 a4 44.a3
h6 45.Rc1 R7d5 46.Rcd1 Kg6 47.Rh1 Rg5 48.Rdh2 d2 49.Rxh6+ Kf7
50.Rd1 Rd3+ 51.Ke2 Rxg3 52.Rf1 Rg2+ 53.Kd1 Rg6 54.Rxg6 Kxg6
55.Rf4 b5 56.Rf5 Rxg4 57.Rxb5 Rd4 1/2-1/2

[Event "Palma de Mallorca"]
[Site "Palma de Mallorca"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "8"]
[Result "1/2-1/2"]
[White "Stefano Tatai"]
[Black "Jan Hein Donner"]
[ECO "C69"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "113"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O f6 6.d4 Bg4 7.c3
exd4 8.cxd4 Qd7 9.h3 Bxf3 10.Qxf3 O-O-O 11.Nc3 Ne7 12.Bf4 Ng6
13.Bg3 Bd6 14.Rfd1 Bxg3 15.fxg3 Kb8 16.Rac1 Rhe8 17.Qh5 Nf8
18.Qa5 Qc8 19.b4 Rd6 20.b5 cxb5 21.a4 c6 22.Nxb5 Rd7 23.Nc3
Qc7 24.Qh5 Red8 25.Ne2 Ne6 26.d5 Qe5 27.Qxe5+ fxe5 28.Nc3 Nd4
29.Kh2 c5 30.Nb1 Rc8 31.Nd2 b5 32.axb5 axb5 33.Nf3 Nxf3+
34.gxf3 c4 35.Rb1 Rc5 36.f4 exf4 37.gxf4 Kc7 38.Kg3 c3 39.Rb4
Kb6 40.Rb3 Rc4 41.Rdb1 c2 42.Rc1 Rxe4 43.Rxc2 Rxd5 44.Rc8 Re7
45.Kf3 Rc5 46.Rh8 g6 47.Rb1 Rb7 48.h4 Rc4 49.h5 gxh5 50.Rf8 b4
51.f5 Kb5 52.f6 h4 53.Re8 Rc6 54.Re5+ Ka4 55.Rf5 Rf7 56.Ra1+
Kb3 57.Rb1+ 1/2-1/2

[Event "Palma de Mallorca"]
[Site "Palma de Mallorca"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "9"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Ricardo Calvo"]
[ECO "A44"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "62"]

1.d4 c5 2.d5 e5 3.e4 d6 4.Nc3 g6 5.Nf3 Bg7 6.Nd2 Nf6 7.Bd3 O-O
8.Nc4 Ne8 9.g4 Qh4 10.h3 Nd7 11.Ne3 a6 12.a4 b6 13.Qe2 Nc7
14.Ncd1 Bb7 15.c4 Rae8 16.Kf1 Bc8 17.f3 f5 18.exf5 e4 19.Bxe4
Ne5 20.Nf2 Kh8 21.Bd2 gxf5 22.gxf5 Bh6 23.f4 Qxf4 24.Rd1 Qh4
25.Nfg4 Bxe3 26.Qxe3 Bxf5 27.Bxf5 Rxf5+ 28.Nf2 Qxc4+ 29.Kg2
Qxd5+ 30.Ne4 Rg8+ 31.Kh2 Qxe4 0-1

[Event "Palma de Mallorca"]
[Site "Palma de Mallorca"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "5"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Lajos Portisch"]
[ECO "D31"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "78"]

1.d4 d5 2.c4 e6 3.Nc3 Be7 4.Nf3 Nf6 5.cxd5 exd5 6.Bg5 c6 7.e3
Ne4 8.Bxe7 Qxe7 9.Bd3 Nd7 10.O-O O-O 11.Qc2 Re8 12.b4 Ndf6
13.b5 c5 14.dxc5 Nxc5 15.Rac1 Nce4 16.Qb2 Be6 17.Nd4 Bd7 18.h3
Rac8 19.Nxe4 dxe4 20.Be2 Nd5 21.Rxc8 Rxc8 22.Rc1 Rxc1+ 23.Qxc1
Qb4 24.Qc4 Qxc4 25.Bxc4 Nc7 26.h4 h6 27.Kf1 Kf8 28.Ke1 Ke7
29.Kd2 Kd6 30.b6 axb6 31.Bxf7 Ke5 32.f4+ exf3 33.gxf3 g5
34.hxg5 hxg5 35.Bc4 Na6 36.Be2 Nb4 37.a3 Nd5 38.Nc2 Nf6 39.Ne1
Nd5 1/2-1/2

[Event "Palma de Mallorca"]
[Site "Palma de Mallorca"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "15"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Mato Damjanovic"]
[ECO "E41"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "80"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 b6 6.Ne2 Bb7 7.O-O
O-O 8.d5 Bxc3 9.Nxc3 exd5 10.cxd5 d6 11.e4 Nbd7 12.Bg5 a6
13.f4 Re8 14.Qf3 b5 15.Rae1 c4 16.Bb1 b4 17.Nd1 Qb6+ 18.Kh1
Rac8 19.Bh4 Qb5 20.Bf2 c3 21.bxc3 Nc5 22.Bxc5 Qxc5 23.Re3 a5
24.Rfe1 a4 25.Bc2 Qa5 26.cxb4 Qxb4 27.Nc3 Rxc3 28.Rxc3 Nxd5
29.Rb1 Qxc3 30.Qxc3 Nxc3 31.Rxb7 g6 32.g3 Rc8 33.a3 Rc4 34.Ra7
Kg7 35.Kg2 h5 36.h4 Nxe4 37.Bxa4 Rc3 38.Be8 Rxg3+ 39.Kh2 Rg4
40.Rxf7+ Kh6 1/2-1/2

[Event "Palma de Mallorca"]
[Site "Palma de Mallorca"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "6"]
[Result "1/2-1/2"]
[White "Eleazar Jimenez-Zerquera"]
[Black "Jan Hein Donner"]
[ECO "B17"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "116"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Bc4 Ngf6 6.Nxf6+ Nxf6
7.c3 g6 8.Nf3 Bg7 9.O-O O-O 10.Ne5 Nd5 11.Qe2 Be6 12.h4 Nc7
13.Bxe6 Nxe6 14.h5 Qd5 15.Re1 Nc7 16.Bf4 Rac8 17.hxg6 hxg6
18.Rad1 Qe6 19.Rd3 Qxa2 20.Rh3 Qe6 21.Qd2 Rfe8 22.Bh6 Bxe5
23.Rxe5 Qf6 24.Bg5 Qg7 25.Bh6 Qf6 26.Rf3 Qh8 27.Rh5 Ne6
28.Rhh3 Rcd8 29.Bf8 Qxh3 30.Rxh3 Nxf8 31.f4 Rd5 32.Qe1 f6
33.Qe4 e6 34.g4 Red8 35.Rf3 f5 36.gxf5 Rxf5 37.Rg3 Rd7 38.Rg5
Rf6 39.Kg2 Rdf7 40.Kg3 a6 41.Kf3 Kg7 42.Ke3 Rxf4 43.Qxf4 Rxf4
44.Kxf4 Kf6 45.Rg1 Nd7 46.Rh1 e5+ 47.dxe5+ Nxe5 48.Ke4 Ke6
49.Rg1 Kd6 50.Rg5 Nd7 51.Rxg6+ Kc7 52.Rg7 a5 53.Kf5 Kd6 54.Rg2
b5 55.Rd2+ Kc7 56.Ke6 Nb6 57.Rh2 c5 58.Ke5 b4 1/2-1/2

[Event "Palma de Mallorca"]
[Site "Palma de Mallorca"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "12"]
[Result "1-0"]
[White "Roman Toran Albero"]
[Black "Jan Hein Donner"]
[ECO "D42"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "55"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 c5 5.cxd5 Nxd5 6.e3 Nc6 7.Bd3
Be7 8.O-O O-O 9.a3 b6 10.Qc2 g6 11.Rd1 Nxc3 12.bxc3 cxd4
13.exd4 Bb7 14.Bh6 Re8 15.Qd2 Bf8 16.Bxf8 Rxf8 17.Qf4 Ne7
18.Ne5 Nd5 19.Qd2 Rc8 20.c4 Ne7 21.Qf4 Nf5 22.Bxf5 exf5 23.d5
Qd6 24.Rd3 Rfd8 25.Rh3 b5 26.Re1 h5 27.Qh6 Re8 28.Rxh5 1-0

[Event "Clare Benedict Cup 14th"]
[Site "Leysin"]
[Date "1967.06.08"]
[EventDate "?"]
[Round "3"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Josef Kupper"]
[ECO "E45"]
[WhiteElo "2500"]
[BlackElo "2374"]
[PlyCount "75"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Nge2 Ba6 6.Ng3 Bxc3+
7.bxc3 d5 8.Qf3 O-O 9.cxd5 exd5 10.Bxa6 Nxa6 11.Qe2 Qc8 12.f3
Re8 13.O-O c5 14.e4 cxd4 15.cxd4 dxe4 16.fxe4 Qd7 17.Bb2 Nc7
18.Rxf6 gxf6 19.d5 Re5 20.Nh5 Qe7 21.Rd1 Ne8 22.Bxe5 Qxe5
23.Qg4+ Kf8 24.Ng3 Nd6 25.Qh4 Rc8 26.Qxh7 Rc2 27.Qh6+ Ke7
28.Qe3 Rxa2 29.h4 Kd7 30.h5 f5 31.Qg5 Ra1 32.Rxa1 Qxa1+ 33.Kh2
Qe5 34.exf5 a5 35.h6 a4 36.Qg7 Qf4 37.h7 Qh4+ 38.Kg1 1-0

[Event "Beverwijk I"]
[Site "?"]
[Date "1967.??.??"]
[EventDate "1967.??.??"]
[Round "1"]
[Result "1/2-1/2"]
[White "Dragoljub M Ciric"]
[Black "Jan Hein Donner"]
[ECO "C84"]
[WhiteElo "2276"]
[BlackElo "2500"]
[PlyCount "52"]

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 Bb7 9. d3 d6 10. Bd2 Qd7 11. Nc3 Nd4 12. Nxd4
exd4 13. Ne2 c5 14. Ng3 g6 15. c3 dxc3 16. bxc3 d5 17. e5 Ne8
18. d4 cxd4 19. cxd4 Ng7 20. Bc2 f5 21. exf6 Bxf6 22. Be3 Bc6
23. axb5 axb5 24. Qd2 Rxa1 25. Rxa1 Ne6 26. f4 Ng7 1/2-1/2

[Event "Beverwijk I"]
[Site "?"]
[Date "1967.??.??"]
[EventDate "1967.??.??"]
[Round "2"]
[Result "1/2-1/2"]
[White "Arturo Pomar-Salamanca"]
[Black "Jan Hein Donner"]
[ECO "E53"]
[WhiteElo "2345"]
[BlackElo "2500"]
[PlyCount "83"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5
7. O-O Nbd7 8. a3 Ba5 9. Qc2 a6 10. Rd1 cxd4 11. Nxd4 dxc4
12. Bxc4 Qc7 13. Be2 Bxc3 14. Qxc3 Qxc3 15. bxc3 Nc5 16. a4
Bd7 17. Ba3 Rfc8 18. Bf3 e5 19. Nc2 Bc6 20. Bxc6 Rxc6 21. Nb4
Rcc8 22. Bb2 Nb3 23. Rab1 Na5 24. Nd5 Nxd5 25. Rxd5 Nc4
26. Bc1 b6 27. e4 f6 28. f3 Ra7 29. Kf2 Kf7 30. Ke2 Rc6
31. Bd2 Ke6 32. Be1 Rd7 33. Rxd7 Kxd7 34. Kd3 Kc7 35. Bf2 Na5
36. Kc2 Nb7 37. g4 Nc5 38. Bxc5 Rxc5 39. Rg1 Ra5 40. Kb3 b5
41. axb5 Rxb5+ 42. Kc2 1/2-1/2

[Event "Beverwijk I"]
[Site "?"]
[Date "1967.??.??"]
[EventDate "1967.??.??"]
[Round "4"]
[Result "1/2-1/2"]
[White "Kick Langeweg"]
[Black "Jan Hein Donner"]
[ECO "D63"]
[WhiteElo "2309"]
[BlackElo "2500"]
[PlyCount "81"]

1. Nf3 d5 2. c4 e6 3. d4 Nf6 4. Nc3 Be7 5. Bg5 O-O 6. e3 Nbd7
7. Rc1 a6 8. c5 c6 9. Bd3 b6 10. cxb6 c5 11. O-O c4 12. Bb1
Nxb6 13. Ne5 Bb7 14. f4 Nfd7 15. Qh5 f5 16. Nf3 Nf6 17. Bxf6
Bxf6 18. g4 g6 19. Qh3 Bc6 20. Ne5 Bxe5 21. fxe5 Na4 22. Nxa4
Bxa4 23. gxf5 gxf5 24. Kh1 Kh8 25. Rg1 Rg8 26. b3 cxb3
27. axb3 Bb5 28. Rxg8+ Qxg8 29. Qh5 Qg7 30. Rg1 Qe7 31. Qf3
Rc8 32. h3 Rg8 33. Rxg8+ Kxg8 34. Kh2 Qb4 35. Qg2+ Kf8 36. Qf2
Ke8 37. Bc2 Kd7 38. Bd1 Qc3 39. Kg3 Bd3 40. Kf4 h6 41. Kg3
1/2-1/2

[Event "Beverwijk I"]
[Site "?"]
[Date "1967.??.??"]
[EventDate "1967.??.??"]
[Round "6"]
[Result "1-0"]
[White "Dirk Daniel Van Geet"]
[Black "Jan Hein Donner"]
[ECO "D27"]
[WhiteElo "2278"]
[BlackElo "2500"]
[PlyCount "115"]

1. Nf3 d5 2. c4 dxc4 3. e3 Nf6 4. Bxc4 e6 5. O-O c5 6. d4 a6
7. dxc5 Qc7 8. a3 Bxc5 9. Nbd2 O-O 10. b4 Bd6 11. Bb2 Nc6
12. Rc1 Qe7 13. Ng5 Be5 14. Bxe5 Nxe5 15. Nde4 Nxe4 16. Nxe4
Nxc4 17. Rxc4 Bd7 18. Rc7 Rfd8 19. Nc5 Ba4 20. Rxe7 Bxd1
21. Rxb7 Be2 22. Rc1 Rac8 23. f3 h6 24. Kf2 Bb5 25. Ke1 g5
26. Rd1 Rxd1+ 27. Kxd1 Bf1 28. Ke1 Bxg2 29. Kf2 Bh3 30. Ra7
Rd8 31. Ke2 g4 32. Rxa6 gxf3+ 33. Kxf3 Bf1 34. Ra7 Rd2 35. h4
Rh2 36. Kg4 Rg2+ 37. Kf4 Rh2 38. Ke5 Rxh4 39. Kf6 Rh3 40. Ra8+
Kh7 41. Kxf7 Rf3+ 42. Ke7 Rxe3 43. Nd7 Bc4 44. Re8 Be2 45. a4
h5 46. Kf7 h4 47. Nf6+ Kh6 48. b5 e5 49. b6 Rb3 50. a5 Bf3
51. Rg8 Bh5+ 52. Ke6 Be2 53. Kf5 Rf3+ 54. Kxe5 Rb3 55. Ne4 Rb4
56. Nc3 Bf3 57. Rf8 Bg2 58. Rf4 1-0

[Event "Beverwijk I"]
[Site "?"]
[Date "1967.??.??"]
[EventDate "1967.??.??"]
[Round "10"]
[Result "1/2-1/2"]
[White "Karl Robatsch"]
[Black "Jan Hein Donner"]
[ECO "B14"]
[WhiteElo "2460"]
[BlackElo "2500"]
[PlyCount "89"]

1. e4 c6 2. d4 d5 3. exd5 cxd5 4. c4 Nf6 5. Nc3 e6 6. Nf3 Be7
7. cxd5 Nxd5 8. Bd3 Nc6 9. a3 O-O 10. O-O Nf6 11. Bg5 b6
12. Bc2 Bb7 13. Qd3 g6 14. Rad1 Rc8 15. Rfe1 Nd5 16. Bc1 Bf6
17. Bb1 Nxc3 18. bxc3 Ne7 19. Ba2 Nf5 20. Ne5 Qc7 21. Bb2 Rfe8
22. Rc1 Bg7 23. Rc2 Nd6 24. Bc1 Bd5 25. c4 b5 26. c5 Bxa2
27. Rxa2 Nf5 28. g4 Rcd8 29. gxf5 Bxe5 30. Qxb5 Bxd4 31. fxe6
Rxe6 32. Rxe6 fxe6 33. Rc2 Qe5 34. Qc4 Qe4 35. c6 Qg4+ 36. Kf1
Rf8 37. Re2 Qh3+ 38. Ke1 Qc3+ 39. Qxc3 Bxc3+ 40. Kd1 Kf7
41. Bf4 Rc8 42. c7 e5 43. Bxe5 Bxe5 44. Rxe5 Rxc7 45. Ra5
1/2-1/2

[Event "Beverwijk I"]
[Site "?"]
[Date "1967.??.??"]
[EventDate "1967.??.??"]
[Round "12"]
[Result "0-1"]
[White "Hans Ree"]
[Black "Jan Hein Donner"]
[ECO "A12"]
[WhiteElo "2393"]
[BlackElo "2500"]
[PlyCount "84"]

1. Nf3 d5 2. c4 c6 3. b3 e6 4. g3 Nf6 5. Bg2 Be7 6. O-O O-O
7. Bb2 Nbd7 8. Qc2 a5 9. Nc3 b6 10. cxd5 cxd5 11. Rac1 Ba6
12. Nd4 Rc8 13. Qb1 e5 14. Nf5 d4 15. Ne4 Bb4 16. Rxc8 Bxc8
17. f4 Nxe4 18. Bxe4 Bxd2 19. fxe5 Nxe5 20. Nxd4 Be3+ 21. Kh1
Bxd4 22. Rd1 Bb7 23. Rxd4 Qe7 24. Bxb7 Qxb7+ 25. Qe4 Qc7
26. Rd5 Ng6 27. Qd3 Qc6 28. e4 Re8 29. Rd8 Rxd8 30. Qxd8+ Nf8
31. Qd4 Qg6 32. Ba3 Ne6 33. Qd5 h5 34. Qf5 Qh6 35. Qf2 Ng5
36. Qf5 Ne6 37. Qf2 b5 38. Bb2 Qg5 39. Qe2 h4 40. Qe1 Qg4
41. Qe3 Qd1+ 42. Qg1 Qe2 0-1

[Event "Beverwijk I"]
[Site "?"]
[Date "1967.??.??"]
[EventDate "1967.??.??"]
[Round "15"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Lubomir Kavalek"]
[ECO "A55"]
[WhiteElo "2500"]
[BlackElo "2527"]
[PlyCount "139"]

1. d4 Nf6 2. c4 d6 3. Nc3 e5 4. Nf3 Nbd7 5. e4 c6 6. g3 Be7
7. Bg2 O-O 8. O-O a6 9. d5 cxd5 10. cxd5 Nc5 11. Ne1 a5 12. f3
h5 13. Be3 h4 14. Rf2 hxg3 15. hxg3 b6 16. Bf1 Nh7 17. Rh2 f5
18. Nd3 Qe8 19. Nxc5 bxc5 20. Bd3 Qg6 21. Rg2 Ng5 22. Bxg5
Bxg5 23. Qe2 f4 24. g4 Bh4 25. Qf1 Kf7 26. Rh2 Rh8 27. Qe2 Qf6
28. Kg2 Rh6 29. Rah1 Kg8 30. Bb5 Ra7 31. Rh3 Rf7 32. Ba6 Bd7
33. Bb5 Bc8 34. Kf1 Qd8 35. Nb1 a4 36. Nd2 g5 37. Ba6 Bd7
38. Bb5 Bc8 39. Bxa4 Ra7 40. Bb3 Rhh7 41. Kg2 Rhb7 42. Rb1 Rb4
43. a3 Rb8 44. Bc4 Bd7 45. Rhh1 Qa5 46. Bd3 Rab7 47. b3 Rf8
48. Nc4 Qc7 49. Qc2 Rf6 50. Be2 Rb8 51. Qc3 Rbf8 52. Rhf1 Bg3
53. Qa5 Qc8 54. Nb6 Qd8 55. Bb5 Bc8 56. b4 cxb4 57. axb4 Rh6
58. Rh1 Rxh1 59. Rxh1 Bxg4 60. fxg4 f3+ 61. Kxg3 Qf6 62. Kf2
Qf4 63. Qa2 Qxg4 64. Bf1 Qf4 65. Bh3 Qh4+ 66. Ke3 g4 67. Qf2
Qg5+ 68. Kd3 g3 69. Rg1 g2 70. Bxg2 1-0

[Event "14th Clare Benedict Cup"]
[Site "Leysin, Switzerland"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "5"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Wolfgang Unzicker"]
[ECO "E54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "57"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 c5 7.O-O
dxc4 8.Bxc4 Qe7 9.a3 Ba5 10.Qe2 Nc6 11.Bd2 cxd4 12.exd4 Rd8
13.Be3 Bb6 14.Rad1 h6 15.Rfe1 Bd7 16.Ba2 Be8 17.Bb1 Qf8 18.h3
Ne7 19.Bf4 Bc6 20.Be5 Nd7 21.Bg3 Nf6 22.Be5 Nd7 23.Bd6 Nf6
24.Bc5 Bxc5 25.dxc5 Ned5 26.Nxd5 Bxd5 27.b4 b6 28.Rc1 bxc5
29.Rxc5 1/2-1/2

[Event "FRG-NED"]
[Site "Krefeld FRG"]
[Date "1967.??.??"]
[EventDate "?"]
[Round "2.1"]
[Result "1/2-1/2"]
[White "Wolfgang Unzicker"]
[Black "Jan Hein Donner"]
[ECO "C86"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "87"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Qe2 b5 7.Bb3
d6 8.a4 Bd7 9.c3 Na5 10.Bc2 c5 11.axb5 axb5 12.d4 Nc6 13.Rxa8
Qxa8 14.dxc5 dxc5 15.Na3 b4 16.Nc4 Qb8 17.Ne3 O-O 18.Nd5 bxc3
19.bxc3 Bg4 20.h3 Nxd5 21.exd5 Bxf3 22.Qxf3 Nd8 23.Rd1 Qd6
24.c4 f5 25.Bd2 e4 26.Qe3 Nf7 27.f4 Rb8 28.Bc3 Qa6 29.Ra1 Qxc4
30.Ra7 Bf8 31.Rd7 Qa2 32.Qd2 Nd6 33.Qd1 Qa8 34.Be5 Rd8 35.Ba4
Qc8 36.Rxd8 Qxd8 37.Bc6 Nf7 38.d6 Bxd6 39.Bd5 Be7 40.Qb3 Qe8
41.Be6 Bf6 42.Bxf6 gxf6 43.Bxf5 Qe7 44.Qe3 1/2-1/2

[Event "Amsterdam (Netherlands)"]
[Site "It"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Istvan Bilek"]
[Black "Jan Hein Donner"]
[ECO "A07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "64"]

1.Nf3 d5 2.g3 g6 3.Bg2 Bg7 4.O-O e5 5.d3 Ne7 6.Nbd2 O-O 7.Rb1
a5 8.c4 d4 9.b3 Nec6 10.a3 Na6 11.Ne1 Re8 12.Nc2 Bf8 13.f4
exf4 14.Rxf4 Bh6 15.Rf2 Be3 16.Qf1 Ne5 17.Ne4 f5 18.Nxe3 dxe3
19.Rf4 fxe4 20.Bxe4 Nc5 21.Bd5+ Be6 22.Bxe3 Bxd5 23.Bxc5 Be6
24.Qg2 b6 25.Bd4 Qd6 26.Rbf1 Nd7 27.Bb2 c5 28.Qf2 Bh3 29.Rf7
Ne5 30.Rf6 Qe7 31.Bxe5 Qxe5 32.Rxg6+ hxg6 0-1

[Event "It, Bamberg (Germany)"]
[Site "It, Bamberg (Germany)"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Milko Bobotsov"]
[Black "Jan Hein Donner"]
[ECO "E81"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "69"]

1. c4 g6 2. Nc3 Bg7 3. d4 Nf6 4. e4 d6 5. f3 O-O 6. Be3 c6
7. Bd3 e5 8. d5 cxd5 9. cxd5 Ne8 10. Qd2 f5 11. Nge2 f4
12. Bf2 Bf6 13. O-O-O Bh4 14. Bg1 Nd7 15. Kb1 Nc5 16. Bc2 Bd7
17. g3 fxg3 18. hxg3 Bf6 19. Qh6 Qe7 20. Be3 b5 21. Rdg1 b4
22. Nd1 a5 23. f4 a4 24. Nc1 b3 25. axb3 axb3 26. Nxb3 Nxb3
27. Bxb3 Ba4 28. Bxa4 Rxa4 29. f5 gxf5 30. exf5 Rg4 31. Qh3
Rb4 32. g4 e4 33. g5 Bxb2 34. Nxb2 Rf7 35. Rh2 1-0

[Event "Olympiad, Lugano (Switzerland)"]
[Site "Olympiad, Lugano (Switzerland)"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Moshe Czerniak"]
[ECO "A42"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "83"]

1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 Nc6 5. Be3 e5 6. Nge2 Nf6
7. d5 Ne7 8. f3 O-O 9. g4 Ne8 10. Nc1 f5 11. g5 Rf7 12. Nd3 c5
13. a3 b6 14. b4 Bd7 15. h4 Bf8 16. a4 a5 17. bxa5 bxa5
18. Rh2 Ng7 19. Rb2 Nh5 20. Rab1 Nc8 21. Rb7 Be7 22. Nb5 fxe4
23. fxe4 Qf8 24. Be2 Bd8 25. Nc3 Nf4 26. Bxf4 exf4 27. Bf3 Ra6
28. e5 dxe5 29. Ne4 Nd6 30. Ndxc5 Nxe4 31. Nxe4 Be7 32. Rb8
Bd8 33. c5 Kg7 34. R1b7 Bf5 35. Rxf7+ Qxf7 36. Rxd8 Qe7
37. Qb3 Qxd8 38. Qb7+ Qd7 39. Qxa6 Bxe4 40. Bxe4 Qh3 41. Qf6+
Kg8 42. Qe6+ 1-0

[Event "Wijk aan Zee"]
[Site "Wijk aan Zee"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Vlastimil Hort"]
[ECO "D94"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "40"]

1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.e3 g6 5.Nf3 Bg7 6.Be2 O-O 7.O-O
Be6 8.cxd5 cxd5 9.Ne5 Nbd7 10.Nd3 Bf5 11.a4 e6 12.g4 Bxd3
13.Qxd3 h5 14.gxh5 Nxh5 15.Bd2 Nb6 16.b3 Re8 17.a5 Nc8 18.a6
bxa6 19.Rxa6 Nd6 20.Bxh5 Qg5+ 1/2-1/2

[Event "Wijk aan Zee"]
[Site "08"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Borislav Ivkov"]
[Black "Jan Hein Donner"]
[ECO "B07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "59"]

1.e4 d6 2.d4 Nf6 3.f3 e5 4.dxe5 dxe5 5.Qxd8+ Kxd8 6.Bc4 Be6
7.Bxe6 fxe6 8.Nd2 Nc6 9.c3 Bd6 10.a4 Ke7 11.Nc4 h6 12.Nh3 Nd7
13.Be3 a6 14.a5 Rhb8 15.Rd1 Nd8 16.Ke2 Nf7 17.Rd2 Nf6 18.Nf2
g5 19.h4 gxh4 20.Rxh4 Rg8 21.g4 Rg6 22.Rd1 Kd7 23.Nd3 Ke7
24.Rdh1 Rh8 25.g5 Nxg5 26.Ncxe5 Rg7 27.Nc4 Bg3 28.e5 Ne8
29.Rg4 Nf7 30.Rh3 1-0

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Borislav Ivkov"]
[Black "Jan Hein Donner"]
[ECO "C07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "52"]

1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5 5.Bb5+ Nc6 6.Ngf3 Bd6
7.O-O Ne7 8.c4 O-O 9.dxc5 Bxc5 10.Nb3 Bb6 11.Bg5 dxc4 12.Qxd8
Bxd8 13.Bxc4 h6 14.Bf4 Bb6 15.Rfe1 Bg4 16.Ne5 Nxe5 17.Bxe5 Nc6
18.Bc3 Rad8 19.h3 Bc8 20.Rac1 Rfe8 21.Rxe8+ Rxe8 22.Bb5 Be6
23.Ba5 Bxb3 24.Bxb6 axb6 25.axb3 Nd4 26.Bc4 Ne2+ 1/2-1/2

[Event "Bamberg"]
[Site "Bamberg"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Borislav Ivkov"]
[Black "Jan Hein Donner"]
[ECO "C18"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "89"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Qc7 7.Nf3
b6 8.a4 Ba6 9.Bxa6 Nxa6 10.Qe2 Nb8 11.a5 bxa5 12.O-O Ne7
13.Ba3 Nd7 14.c4 O-O 15.cxd5 Nxd5 16.Qe4 h6 17.c4 Nb4 18.d5
Rae8 19.d6 Qc6 20.Qe2 a4 21.Bc1 f6 22.Bb2 f5 23.Rfe1 Rf7
24.Ra3 Rb8 25.Bc1 Qa6 26.Qd1 Qxc4 27.Rxa4 Nb6 28.Ra5 Nd3
29.Rf1 Qd5 30.Be3 Nc4 31.Rxc5 Qe4 32.Rxc4 Qxc4 33.Qa1 Rfb7
34.h3 f4 35.Bxa7 Ra8 36.Qd4 Qb5 37.Rd1 Nb2 38.Ra1 g5 39.Kh2
Qc4 40.Qd2 Qb5 41.Ra5 Qd3 42.Bb6 Rxa5 43.Qxa5 Rf7 44.Nd4 Qc4
45.Qa8+ 1-0

[Event "Bamberg (25.04.68)"]
[Site "13"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Paul Keres"]
[ECO "E41"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "25"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 b6 6.Ne2 Bb7 7.O-O
cxd4 8.exd4 Nc6 9.d5 Ne5 10.Bf4 Nxd3 11.Qxd3 O-O 12.a3 Bxc3
13.Nxc3 1/2-1/2

[Event "Wijk aan Zee"]
[Site "Wijk aan Zee"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Viktor Korchnoi"]
[ECO "E53"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "30"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5
7. O-O Nbd7 8. a3 Ba5 9. cxd5 exd5 10. Ne5 cxd4 11. exd4 Bxc3
12. bxc3 Qc7 13. Nxd7 Bxd7 14. Qc2 Rfe8 15. f3 h6 1/2-1/2

[Event "Olympiad"]
[Site "Lugano (Switzerland)"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "O'Kelly"]
[ECO "E54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "100"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 c5 7.O-O
dxc4 8.Bxc4 Nc6 9.Bd3 cxd4 10.exd4 Be7 11.Be3 Bd7 12.a3 Rc8
13.Bc2 Qa5 14.Ng5 h6 15.Nge4 Rfd8 16.b4 Qc7 17.Rc1 Be8 18.Qd3
Ng4 19.Ng3 g6 20.Bb3 Qd7 21.d5 Nce5 22.Qe2 Nxe3 23.Qxe3 Nc4
24.dxe6 Qxe6 25.Qxh6 Bf8 26.Qh4 Be7 27.Qh6 Bf8 28.Qf4 Bd6
29.Qe4 Bxg3 30.Qxe6 Bxh2+ 31.Kxh2 fxe6 32.Ne4 b5 33.Nc5 Rd4
34.Rfe1 Bf7 35.Nxe6 Rd2 36.Ng5 Rxf2 37.Nxf7 Kxf7 38.Re4 Rd8
39.Bxc4+ bxc4 40.Rcxc4 Rd7 41.Rf4+ Rxf4 42.Rxf4+ Kg7 43.Rc4
Kh6 44.Rc5 g5 45.Ra5 Kh5 46.Kh3 Rd3+ 47.g3 Rd7 48.g4+ Kg6
49.Ra6+ Kg7 50.Kg3 Rf7 1-0

[Event "It (open)"]
[Site "Busum (Netherlands)"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Bruno Parma"]
[Black "Jan Hein Donner"]
[ECO "C07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "96"]

1.e4 e6 2.d4 d5 3.Nd2 c5 4.Ngf3 Nf6 5.exd5 exd5 6.Bb5+ Bd7
7.Bxd7+ Nbxd7 8.O-O Be7 9.dxc5 Nxc5 10.Nd4 O-O 11.Nf5 Re8
12.Nb3 Nce4 13.Nxe7+ Qxe7 14.Be3 Qc7 15.Bd4 Nd7 16.f3 Nd6
17.Qd3 Rac8 18.Bc3 Nb6 19.a4 Qc4 20.a5 Qxd3 21.cxd3 Nd7 22.a6
b6 23.Nd4 Nc5 24.Bb4 Red8 25.Ra3 Ne6 26.Nxe6 fxe6 27.Bxd6 Rxd6
28.Rc3 Rxc3 29.bxc3 Rc6 30.Rc1 Kf7 31.Kf2 Rc5 32.Ke3 Ra5 33.c4
dxc4 34.Rxc4 Rxa6 35.Rc7+ Kf6 36.g4 h6 37.h4 Ra1 38.Rb7 g5
39.h5 Ke5 40.Rh7 a5 41.Rxh6 a4 42.Kd2 a3 43.Kc2 Rd1 44.Kb3
Rxd3+ 45.Ka2 b5 46.Rh8 b4 47.Rb8 Rd2+ 48.Ka1 Kf4 0-1

[Event "Solingen (Germany)"]
[Site "Solingen (Germany)"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Bruno Parma"]
[Black "Jan Hein Donner"]
[ECO "C07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "69"]

1.e4 e6 2.d4 d5 3.Nd2 c5 4.Ngf3 Nf6 5.exd5 exd5 6.Bb5+ Bd7
7.Bxd7+ Nbxd7 8.O-O Be7 9.dxc5 Nxc5 10.Nb3 O-O 11.Nxc5 Bxc5
12.Bg5 Be7 13.Re1 Qd7 14.Re5 Rad8 15.Qd3 h6 16.Bh4 Rfe8 17.Rd1
g5 18.Bg3 Bf8 19.Rxe8 Rxe8 20.Be5 Ne4 21.h3 Bc5 22.Qxe4 dxe4
23.Rxd7 exf3 24.Rd5 b6 25.gxf3 f6 26.Bd4 Re1+ 27.Kg2 Bxd4
28.Rxd4 Rb1 29.Rb4 Kf7 30.a4 Kg6 31.b3 Rc1 32.Rc4 h5 33.Rc7
Kf5 34.Rxa7 Rxc2 35.Ra6 1-0

[Event "Olympiad"]
[Site "Lugano (Switzerland)"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Dr. Jonathan Penrose"]
[ECO "E92"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "70"]

1.d4 g6 2.c4 Bg7 3.Nc3 d6 4.e4 Nf6 5.Be2 O-O 6.Nf3 e5 7.Be3
Qe7 8.d5 Nh5 9.Nd2 Nf4 10.Bf1 f5 11.g3 fxe4 12.Ndxe4 Nh5
13.Qd2 Nd7 14.Bh3 Ndf6 15.Bxc8 Nxe4 16.Nxe4 Raxc8 17.O-O b6
18.b4 Nf6 19.f3 Qd7 20.Qd3 Nxe4 21.fxe4 Qh3 22.a4 Bh6 23.Rxf8+
Rxf8 24.Bf2 Qg4 25.Kg2 Qg5 26.Ra2 Qc1 27.c5 Rf7 28.a5 bxc5
29.bxc5 dxc5 30.Rc2 Qa1 31.a6 Bf8 32.Bxc5 Bxc5 33.Rxc5 Qe1
34.Rc2 Qb4 35.h4 h5 1/2-1/2

[Event "Lugano"]
[Site "Lugano"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Lajos Portisch"]
[ECO "E75"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "74"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 c5 7.d5 e6
8.Nf3 h6 9.Be3 exd5 10.cxd5 b5 11.Bxb5 Nxe4 12.Nxe4 Qa5+
13.Nc3 Bxc3+ 14.bxc3 Qxb5 15.Qb3 Ba6 16.Qxb5 Bxb5 17.Nd2 Bd3
18.Bxh6 Re8+ 19.Kd1 Nd7 20.Rc1 Nb6 21.Re1 Rxe1+ 22.Kxe1 Re8+
23.Be3 f5 24.Nf3 f4 25.Kd2 c4 26.Bxb6 Re2+ 27.Kd1 axb6 28.Rb1
Rxf2 29.Rxb6 Rxg2 30.Ke1 Re2+ 31.Kd1 Rxa2 32.Ke1 Re2+ 33.Kd1
Rf2 34.Ng5 f3 35.h4 Rg2 36.Rb8+ Kg7 37.Rb7+ Kf8 0-1

[Event "Wijk aan Zee"]
[Site "Wijk aan Zee"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Lajos Portisch"]
[ECO "E41"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "67"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 O-O 6.Nf3 b6 7.d5 Bb7
8.e4 b5 9.e5 bxc4 10.Bb1 Nxd5 11.Bxh7+ Kxh7 12.Ng5+ Kg8 13.Qh5
Qxg5 14.Bxg5 Nxc3 15.a3 Ne4 16.axb4 Nc6 17.Be3 Nxb4 18.O-O Nc2
19.Rac1 Nxe3 20.fxe3 Bd5 21.Rf4 f5 22.exf6 Rxf6 23.Rcf1 Raf8
24.Rxf6 Nxf6 25.Qe5 Ne4 26.Rxf8+ Kxf8 27.Qb8+ Kf7 28.Qxa7 Bc6
29.h4 Kg6 30.g4 Kh6 31.Qb8 Kh7 32.Qf8 Nf6 33.g5 Ne4 34.Qf7 1-0

[Event "Wijk aan Zee"]
[Site "11"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Nicolas Rossolimo"]
[ECO "E69"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "95"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nbd7 7.O-O
e5 8.e4 c6 9.h3 exd4 10.Nxd4 Re8 11.Be3 Nc5 12.Qc2 Qe7 13.Rfe1
Nfd7 14.Rad1 a5 15.b3 Nf8 16.Re2 Nfe6 17.Nxe6 Bxe6 18.Bd4 Rad8
19.Bxg7 Kxg7 20.Re3 Qc7 21.Ne2 Kg8 22.Nd4 Qb6 23.Qc3 Bc8 24.a3
Re7 25.b4 axb4 26.axb4 Na6 27.Nc2 Qc7 28.Red3 Be6 29.Kh2 Ree8
30.f4 Qe7 31.R3d2 f5 32.exf5 Bxf5 33.Nd4 Qf6 34.b5 Nb8 35.bxc6
Nxc6 36.Nb5 Qxc3 37.Nxc3 Na5 38.Rxd6 Rxd6 39.Rxd6 Rc8 40.Nd5
Kf7 41.Nb6 Re8 42.g4 Be4 43.Rd7+ Kg8 44.Nd5 Bxd5 45.Bxd5+ Kh8
46.Kg3 Rc8 47.Be6 Nxc4 48.Rd4 1-0

[Event "Amsterdam (Netherlands)"]
[Site "It"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Leonid Shamkovich"]
[Black "Jan Hein Donner"]
[ECO "B17"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "52"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nd7 5.Bc4 Ngf6 6.Ng5 e6
7.Qe2 Nb6 8.Bd3 h6 9.N5f3 c5 10.Be3 Nbd5 11.Ne5 Nxe3 12.fxe3
Bd6 13.Ngf3 Bxe5 14.Nxe5 cxd4 15.Bb5+ Nd7 16.O-O-O Qg5 17.Nxd7
Bxd7 18.Bxd7+ Kxd7 19.Rxd4+ Ke7 20.Qf3 Rhd8 21.Qxb7+ Kf8
22.Rxd8+ Rxd8 23.Qe4 Qa5 24.a3 Qd2+ 25.Kb1 a5 26.Rf1 Kg8
1/2-1/2

[Event "Habana (Cuba)"]
[Site "Habana (Cuba)"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Alexey Suetin"]
[Black "Jan Hein Donner"]
[ECO "C18"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "47"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Qc7 7.Nf3
b6 8.a4 Ba6 9.Bxa6 Nxa6 10.Qd3 Nb8 11.O-O Nd7 12.a5 Rc8
13.axb6 axb6 14.dxc5 bxc5 15.Re1 Ne7 16.h4 h5 17.c4 dxc4
18.Qxc4 Nf5 19.Qf4 Nf8 20.Rd1 Qc6 21.Qc4 Nd7 22.Ra6 Nb6 23.Qb3
Rb8 24.Bg5 1-0

[Event "Bamberg"]
[Site "10"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Laszlo Szabo"]
[Black "Jan Hein Donner"]
[ECO "A69"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "48"]

1.c4 g6 2.d4 Nf6 3.Nc3 Bg7 4.e4 d6 5.f4 O-O 6.Nf3 c5 7.d5 e6
8.Be2 exd5 9.cxd5 Re8 10.e5 Nfd7 11.Nb5 dxe5 12.Nd6 Rf8 13.O-O
Na6 14.Bxa6 bxa6 15.Re1 e4 16.Nxe4 c4 17.Be3 Bb7 18.Nd6 Qc7
19.Nxb7 Qxb7 20.Bd4 Nf6 21.d6 Rfd8 22.Re7 Qc6 23.Be5 Nd5
24.Nd4 Qb6 0-1

[Event "Wijk aan Zee"]
[Site "12"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Mikhail Tal"]
[Black "Jan Hein Donner"]
[ECO "C18"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "59"]

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Qc7 7.Nf3
b6 8.a4 Ba6 9.Bxa6 Nxa6 10.Qe2 Nb8 11.a5 bxa5 12.Ba3 Nd7
13.dxc5 Ne7 14.c6 Qxc6 15.O-O Qxc3 16.Rfd1 Nc6 17.Bd6 Qc4
18.Qe3 Qe4 19.Qb3 Nb6 20.c4 Qxc4 21.Qa3 Qa6 22.Rac1 Rc8 23.Nd2
f6 24.exf6 gxf6 25.Qf3 Kd7 26.Qxf6 Rhe8 27.Ne4 Ne7 28.Nc5+
Rxc5 29.Bxc5 Nc4 30.Bxe7 1-0

[Event "Int. tournament, Solingen (FRG)"]
[Site "Solingen"]
[Date "1968.??.??"]
[EventDate "1968.??.??"]
[Round "2"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Stefano Tatai"]
[ECO "E54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "75"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5
7. O-O dxc4 8. Bxc4 Qe7 9. a3 Ba5 10. Qc2 Bd7 11. Bd2 Rc8
12. Ba2 Bb6 13. Rad1 Bc6 14. dxc5 Bxc5 15. Nd4 Nbd7 16. Nxc6
Rxc6 17. Qa4 Nb6 18. Qh4 Rd8 19. Bb1 h6 20. Ne4 Nxe4 21. Qxe4
f5 22. Qf3 Na4 23. Bc1 Rxd1 24. Qxd1 Nb6 25. Ba2 Kh7 26. g3
Bd6 27. Qf3 Qc7 28. Bd2 Nc4 29. Bc3 Be5 30. Bxc4 Bxc3 31. Bxe6
Bxb2 32. Bxf5+ g6 33. Be4 Rf6 34. Qg4 Bxa3 35. h4 Kh8 36. Bxg6
a5 37. Bd3 Qc3 38. Qe4 1-0

[Event "Int. tournament, Solingen (FRG)"]
[Site "Solingen"]
[Date "1968.??.??"]
[EventDate "1968.??.??"]
[Round "3"]
[Result "1/2-1/2"]
[White "Dragoljub Janosevic"]
[Black "Jan Hein Donner"]
[ECO "C71"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "88"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 d6 5. c4 Nf6 6. Nc3 Be7
7. d4 Bd7 8. d5 Nb8 9. O-O O-O 10. Bc2 c5 11. a4 Ne8 12. Rb1
a5 13. Ne1 Na6 14. f4 exf4 15. Bxf4 Bf6 16. Rc1 Qe7 17. Qd2
Nb8 18. Nd3 Bc8 19. Rce1 Nd7 20. Nb5 Ne5 21. b3 Bd7 22. Nxe5
Bxe5 23. Bg5 f6 24. Be3 b6 25. Nc3 Nc7 26. Ne2 Na6 27. Ng3
Bxg3 28. hxg3 Be8 29. Bd1 Nb8 30. Bg4 Nd7 31. Bf5 Ne5 32. g4
h6 33. Bf4 Bf7 34. Re3 Be8 35. Rh3 Bd7 36. Bxe5 fxe5 37. Rhf3
Bxf5 38. gxf5 Rf6 39. g4 g5 40. Rh3 Qg7 41. Kg2 Ra7 42. Rfh1
Ra8 43. Qe3 Ra7 44. Rh5 Ra8 1/2-1/2

[Event "Int. tournament, Solingen (FRG)"]
[Site "Solingen"]
[Date "1968.??.??"]
[EventDate "1968.??.??"]
[Round "4"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Levente Lengyel"]
[ECO "E53"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "72"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 d5 6. Nf3 O-O
7. O-O Nbd7 8. a3 Ba5 9. cxd5 exd5 10. Bd2 Bc7 11. Qc2 a6
12. Rfe1 c4 13. Bf5 g6 14. Bh3 Re8 15. e4 dxe4 16. Nxe4 Nxe4
17. Rxe4 Rxe4 18. Qxe4 Nf6 19. Qh4 Nh5 20. Bg5 f6 21. Bd2 Bxh3
22. Qxh3 Qc8 23. Qh4 Qf5 24. Re1 Bd6 25. Bc3 Nf4 26. g4 Qd5
27. Re3 Rf8 28. Kf1 Qc6 29. Bd2 g5 30. Qh6 Rf7 31. d5 Qxd5
32. Re8+ Rf8 33. Rxf8+ Bxf8 34. Qxf6 Qxf3 35. Qxg5+ Ng6
36. Bc3 Be7 0-1

[Event "Int. tournament, Solingen (FRG)"]
[Site "Solingen"]
[Date "1968.??.??"]
[EventDate "1968.??.??"]
[Round "5"]
[Result "1/2-1/2"]
[White "Ludek Pachman"]
[Black "Jan Hein Donner"]
[ECO "D94"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "37"]

1. Nf3 d5 2. c4 c6 3. e3 Nf6 4. Nc3 g6 5. d4 Bg7 6. Be2 O-O
7. O-O Be6 8. b3 h6 9. Bb2 Nbd7 10. Rc1 Rc8 11. Bd3 c5 12. Qe2
dxc4 13. bxc4 Bg4 14. h3 Bxf3 15. Qxf3 e5 16. d5 Ne8 17. e4 a6
18. Qe2 Nd6 19. Rb1 1/2-1/2

[Event "Int. tournament, Solingen (FRG)"]
[Site "Solingen"]
[Date "1968.??.??"]
[EventDate "1968.??.??"]
[Round "6"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Mato Damjanovic"]
[ECO "E53"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "72"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 d5 6. Nf3 O-O
7. O-O Nbd7 8. a3 Ba5 9. Qc2 a6 10. cxd5 exd5 11. dxc5 Nxc5
12. Bxh7+ Nxh7 13. b4 Be6 14. bxa5 Qxa5 15. Bd2 Qd8 16. Na4
Nxa4 17. Qxa4 Ng5 18. Nd4 Re8 19. f3 Nh7 20. Rfb1 Re7 21. Rb4
Nf6 22. Qb3 Bc8 23. Ne2 b5 24. Rd4 Qe8 25. Nf4 Bb7 26. h4 Rc8
27. g4 Rc4 28. Qd3 Nd7 29. Nxd5 Bxd5 30. Rxd5 Ne5 31. Qf1 Rd7
32. Rxd7 Qxd7 33. Be1 Qd5 34. Kg2 Rxg4+ 35. Kh3 Nxf3 36. Bg3
Qf5 0-1

[Event "Int. tournament, Solingen (FRG)"]
[Site "Solingen"]
[Date "1968.??.??"]
[EventDate "1968.??.??"]
[Round "7"]
[Result "1-0"]
[White "Gunther Capelan"]
[Black "Jan Hein Donner"]
[ECO "B99"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "67"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6
7. f4 Be7 8. Qf3 Nbd7 9. O-O-O Qc7 10. g4 b5 11. Bxf6 gxf6
12. f5 Nc5 13. fxe6 fxe6 14. a3 O-O 15. Bd3 Rb8 16. h4 b4
17. axb4 Rxb4 18. Qe3 Qb6 19. Be2 Na4 20. Nxa4 Rxa4 21. b3 Ra5
22. Bc4 Re5 23. Qh6 Rf7 24. g5 Bf8 25. Qh5 d5 26. Rhg1 Rg7
27. Qf3 dxc4 28. gxf6 Rg6 29. f7+ Kg7 30. h5 Reg5 31. h6+ Kxh6
32. Rxg5 Kxg5 33. Rh1 Rg7 34. Rg1+ 1-0

[Event "Int. tournament, Solingen (FRG)"]
[Site "Solingen"]
[Date "1968.??.??"]
[EventDate "1968.??.??"]
[Round "8"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Mathias Gerusel"]
[ECO "D22"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "80"]

1. d4 d5 2. c4 dxc4 3. Nf3 a6 4. e3 Bg4 5. Bxc4 e6 6. h3 Bh5
7. O-O Nc6 8. b3 Nf6 9. Bb2 Bd6 10. Nbd2 Qe7 11. Be2 Ba3
12. Bxa3 Qxa3 13. Nc4 Qe7 14. Qc2 O-O 15. Rfc1 Nb4 16. Qd2 Ne4
17. Qe1 f6 18. a3 Nd5 19. b4 Nd6 20. Na5 h6 21. Nd2 Bxe2
22. Qxe2 c6 23. Ndc4 Rf7 24. g3 Nxc4 25. Nxc4 Rd8 26. Rab1
Rff8 27. Rb3 Rd7 28. Rd3 Rfd8 29. Rcd1 e5 30. Qc2 exd4
31. Rxd4 Nc7 32. Rxd7 Rxd7 33. Rxd7 Qxd7 34. h4 Nb5 35. a4 Nc7
36. Na5 Ne6 37. Qc4 Kf7 38. Kg2 Ke7 39. Qe4 Kf7 40. g4 Nd8
1/2-1/2

[Event "Int. tournament, Solingen (FRG)"]
[Site "Solingen"]
[Date "1968.??.??"]
[EventDate "1968.??.??"]
[Round "9"]
[Result "1/2-1/2"]
[White "A Medina-Garcia"]
[Black "Jan Hein Donner"]
[ECO "C07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "45"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 a6 5. dxc5 Bxc5 6. Bd3 Nc6
7. O-O Nf6 8. Qe2 O-O 9. e5 Nd7 10. Nb3 Be7 11. Bf4 f6
12. exf6 Nxf6 13. Rad1 Bd6 14. Bg3 Qc7 15. Rfe1 Bxg3 16. hxg3
e5 17. Nxe5 Re8 18. f4 Bg4 19. Nxg4 Rxe2 20. Nxf6+ gxf6
21. Rxe2 Qd7 22. Rde1 Qg4 23. Re3 1/2-1/2

[Event "Int. tournament, Solingen (FRG)"]
[Site "Solingen"]
[Date "1968.??.??"]
[EventDate "1968.??.??"]
[Round "10"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "O'Kelly"]
[ECO "E54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "40"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5
7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Bd3 Qe7 11. Qc2 cxd4
12. exd4 Rd8 13. Be3 Bd7 14. Rfe1 Rac8 15. b4 Nxb4 16. axb4
Bxb4 17. Bd2 Bxc3 18. Bxc3 Nd5 19. Bxh7+ Kh8 20. Be4 Nxc3
1/2-1/2

[Event "Int. tournament, Solingen (FRG)"]
[Site "Solingen"]
[Date "1968.??.??"]
[EventDate "1968.??.??"]
[Round "11"]
[Result "1/2-1/2"]
[White "Johannes Eising"]
[Black "Jan Hein Donner"]
[ECO "E70"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "83"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. Nge2 O-O 6. Ng3 c5
7. d5 Na6 8. Be2 Nc7 9. a4 a6 10. a5 Rb8 11. O-O Bd7 12. Ra2
b5 13. b3 Nh5 14. Nxh5 Bxc3 15. Nf4 Ne8 16. Bd2 Bxd2 17. Qxd2
Nf6 18. e5 dxe5 19. Nd3 bxc4 20. bxc4 Qc7 21. Qe3 Rb3 22. Qxc5
Qd6 23. Qa7 Rc8 24. Rd1 Ne4 25. c5 Nxc5 26. Nxc5 Rxc5 27. Qxa6
Qxa6 28. Bxa6 Bb5 29. Bxb5 Rbxb5 30. Rda1 Rxd5 31. a6 Rd8
32. Kf1 Ra8 33. Ra5 Rxa5 34. Rxa5 Kf8 35. Ke2 Ke8 36. Kd3 Kd7
37. Kc4 Kc6 38. Rxe5 Ra7 39. Re3 Kb6 40. g4 Rc7+ 41. Kd4 Kxa6
42. Rh3 1/2-1/2

[Event "Int. tournament, Solingen (FRG)"]
[Site "Solingen"]
[Date "1968.??.??"]
[EventDate "1968.??.??"]
[Round "12"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Laszlo Szabo"]
[ECO "D10"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "29"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 g6 5. Nf3 Bg7 6. Be2 O-O
7. O-O e6 8. b4 b6 9. Qb3 Bb7 10. a4 Nbd7 11. cxd5 exd5
12. Ba3 Re8 13. Rac1 a6 14. Rfd1 b5 15. a5 1/2-1/2

[Event "Int. tournament, Solingen (FRG)"]
[Site "Solingen"]
[Date "1968.??.??"]
[EventDate "1968.??.??"]
[Round "13"]
[Result "1/2-1/2"]
[White "Jan Nowak"]
[Black "Jan Hein Donner"]
[ECO "E70"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "57"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. Be3 d6 6. f3 c6
7. Qd2 a6 8. a4 a5 9. Nge2 Na6 10. Nc1 Ne8 11. Be2 Nec7
12. O-O Ne6 13. f4 c5 14. d5 Nd4 15. Nb5 Nxe2+ 16. Nxe2 Nc7
17. f5 Ne8 18. Bh6 Nf6 19. Nec3 Ng4 20. Bxg7 Kxg7 21. Rf4 Ne5
22. Rh4 h5 23. Rf1 Rh8 24. b3 Bd7 25. f6+ exf6 26. Rhf4 Bxb5
27. Nxb5 Qe7 28. Rxf6 Rhd8 29. h3 1/2-1/2

[Event "Int. tournament, Solingen (FRG)"]
[Site "Solingen"]
[Date "1968.??.??"]
[EventDate "1968.??.??"]
[Round "14"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Robert Wade"]
[ECO "E56"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "55"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 d5 6. Nf3 O-O
7. O-O Nc6 8. a3 dxc4 9. Bxc4 Ba5 10. Bd3 Bd7 11. Ne4 cxd4
12. exd4 h6 13. Qe2 Bb6 14. Be3 Nxe4 15. Bxe4 Qf6 16. Rad1
Rfd8 17. Rd2 Be8 18. Rfd1 Rd6 19. d5 exd5 20. Bxd5 Rad8
21. Bxb6 axb6 22. Qe3 Kh8 23. h3 Na5 24. Ne5 Nb3 25. Ng4 Nxd2
26. Nxf6 Nc4 27. Nxe8 Nxe3 28. Nxd6 1-0

[Event "Int. tournament, Solingen (FRG)"]
[Site "Solingen"]
[Date "1968.??.??"]
[EventDate "1968.??.??"]
[Round "15"]
[Result "1/2-1/2"]
[White "Dr. Heinz Lehmann"]
[Black "Jan Hein Donner"]
[ECO "C91"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "28"]

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 Na5 11. Bc2 d5 12. Nbd2
exd4 13. Bxd4 dxe4 14. Nxe4 Nc4 1/2-1/2

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Vladimir Antoshin"]
[Black "Jan Hein Donner"]
[ECO "D37"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "87"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bf4 O-O 6.e3 b6 7.cxd5
exd5 8.Be2 Bb7 9.O-O c5 10.Rc1 Nbd7 11.Ne5 Nxe5 12.Bxe5 Ne4
13.dxc5 Bxc5 14.Nxe4 dxe4 15.Bc4 Qg5 16.Qd7 Qxe5 17.Qxb7 Rae8
18.Rcd1 Re7 19.Rd7 Rxd7 20.Qxd7 a5 21.b3 g6 22.g3 Qe7 23.Rd1
Re8 24.Qc6 Rd8 25.Rxd8+ Qxd8 26.Qxe4 Kg7 27.Qb7 Qe7 28.Qd5 h5
29.Kg2 Qf6 30.a4 Kf8 31.h3 Kg7 32.g4 hxg4 33.hxg4 g5 34.Bd3
Kf8 35.Bc2 Kg7 36.Qe4 Bd6 37.Bd3 Kf8 38.Qf3 Be7 39.Qa8+ Kg7
40.Qe4 Bd6 41.Qh7+ Kf8 42.Bc4 Bc5 43.Qe4 Bd6 44.Qb7 1/2-1/2

[Event "Buesum"]
[Site "Buesum"]
[Date "1968.05.08"]
[EventDate "?"]
[Round "3"]
[Result "1-0"]
[White "Georgi P Tringov"]
[Black "Jan Hein Donner"]
[ECO "B16"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "65"]

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Nf6 5.Nxf6+ gxf6 6.Nf3 Bf5
7.g3 Bg7 8.Bg2 O-O 9.O-O Bg6 10.c4 Nd7 11.Be3 Qc7 12.Re1 Rad8
13.Qb3 Rfe8 14.d5 c5 15.Nh4 b6 16.Bf4 Ne5 17.Bh3 Qb7 18.Nf5
Bxf5 19.Bxf5 Ng6 20.Be3 Qc7 21.Qc2 Nf8 22.Bf4 Qb7 23.Re2 e6
24.Rae1 Qd7 25.Bh3 f5 26.Bg5 Rc8 27.Qd2 Bd4 28.Bg2 exd5
29.Bxd5 Rxe2 30.Qxe2 Ng6 31.Kg2 Kg7 32.Qh5 Bxb2 33.Re7 1-0

[Event "Eersel m"]
[Site "Eersel"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1/2-1/2"]
[White "Svetozar Gligoric"]
[Black "Jan Hein Donner"]
[ECO "E52"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "64"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 b6 7.O-O
Bb7 8.a3 Bd6 9.b4 dxc4 10.Bxc4 Nbd7 11.Bb2 Qe7 12.Nb5 a6
13.Nxd6 cxd6 14.b5 d5 15.Bd3 axb5 16.Qb3 Ba6 17.Bc3 Rfc8
18.Bb4 Qd8 19.Rac1 Rxc1 20.Rxc1 Rc8 21.Qb1 Nb8 22.Ne5 g6 23.h3
Ne8 24.Rxc8 Qxc8 25.Qf1 Nc6 26.Bxb5 Nxb4 27.axb4 Nc7 28.Be2
Bxe2 29.Qxe2 Qb7 30.Qc2 Nb5 31.h4 Qc7 32.Qa4 Nd6 1/2-1/2

[Event "Eersel m"]
[Site "Eersel"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "2"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Svetozar Gligoric"]
[ECO "E75"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "74"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 c5 7.d5 e6
8.Nf3 h6 9.Bh4 exd5 10.cxd5 g5 11.Bg3 Nh5 12.Nd2 Nxg3 13.hxg3
Nd7 14.Nc4 Qe7 15.Ne3 Nf6 16.f3 Rb8 17.g4 b5 18.Nxb5 Nxe4
19.fxe4 Qxe4 20.Qd3 Qb4+ 21.Qd2 Rxb5 22.Bxb5 Qxb5 23.O-O-O Qa4
24.b3 Qe4 25.Nc4 Bxg4 26.Rde1 Qg6 27.Rhf1 Bc8 28.Re7 f5
29.Rxa7 f4 30.Re1 g4 31.Ra8 f3 32.gxf3 g3 33.Rg1 h5 34.Qg2 h4
35.Rxc8 Rxc8 36.Qh3 Qg5+ 37.Kd1 Re8 0-1

[Event "Eersel m"]
[Site "Eersel"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "3"]
[Result "1-0"]
[White "Svetozar Gligoric"]
[Black "Jan Hein Donner"]
[ECO "E92"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "61"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.Be3
Nc6 8.d5 Ne7 9.Nd2 Nh5 10.Bxh5 gxh5 11.Qxh5 Ng6 12.Nf3 Nf4
13.Bxf4 exf4 14.O-O Qe8 15.Rfe1 f5 16.Qg5 fxe4 17.Rxe4 Qg6
18.Rxf4 Re8 19.h4 Bd7 20.Rc1 a6 21.b3 Rf8 22.Ne2 Rae8 23.Rxf8+
Rxf8 24.Qxg6 hxg6 25.Ng5 Be5 26.Rd1 Re8 27.Nd4 Bf6 28.Nde6 Rc8
29.Rd3 Be8 30.Rf3 Be7 31.Ne4 1-0

[Event "Eersel m"]
[Site "Eersel"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "4"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Svetozar Gligoric"]
[ECO "A36"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "28"]

1.c4 g6 2.g3 Bg7 3.Bg2 c5 4.Nc3 Nc6 5.e3 e6 6.Nge2 Nge7 7.d4
cxd4 8.Nxd4 Nxd4 9.exd4 d5 10.cxd5 Nxd5 11.Nxd5 exd5 12.O-O
O-O 13.Qb3 Be6 14.Be3 Qd7 1/2-1/2

[Event "Eersel m"]
[Site "Eersel"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "5"]
[Result "1/2-1/2"]
[White "Svetozar Gligoric"]
[Black "Jan Hein Donner"]
[ECO "E92"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "71"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.d5 c5
8.Bg5 h6 9.Bh4 Na6 10.Nd2 Nc7 11.O-O Bd7 12.a3 Qe7 13.b4 b6
14.Rb1 Rfb8 15.Qc2 Qf8 16.Rb3 Nfe8 17.Rfb1 f5 18.f3 f4 19.Be1
Na6 20.R3b2 Bf6 21.Nb5 h5 22.Qa4 Nac7 23.Qd1 Bd8 24.bxc5 dxc5
25.a4 a5 26.Nb3 Nxb5 27.cxb5 Nd6 28.Bc3 Bf6 29.Nd2 Kh7 30.Nc4
Nxc4 31.Bxc4 Qd6 32.g3 Rf8 33.Kh1 Bg7 34.Rg2 Bh6 35.Be2 fxg3
36.hxg3 1/2-1/2

[Event "Eersel m"]
[Site "Eersel"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "6"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Svetozar Gligoric"]
[ECO "E93"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "56"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.d5
Nbd7 8.Be3 Ng4 9.Bg5 f6 10.Bh4 Nh6 11.Nd2 g5 12.Bg3 f5 13.exf5
Nf6 14.Nde4 Nxe4 15.Nxe4 Bxf5 16.f3 g4 17.Bf2 gxf3 18.gxf3 Ng4
19.Bd3 Nxf2 20.Nxf2 Qh4 21.O-O e4 22.Nxe4 Bh3 23.Re1 Be5
24.Qe2 Kh8 25.Kh1 Rxf3 26.Qxf3 Bg4 27.Qf2 Bf3+ 28.Kg1 Bxh2+
0-1

[Event "Eersel m"]
[Site "Eersel"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "7"]
[Result "1/2-1/2"]
[White "Svetozar Gligoric"]
[Black "Jan Hein Donner"]
[ECO "D19"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "47"]

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.e3 e6 7.Bxc4
Bb4 8.O-O O-O 9.Qe2 Bg4 10.h3 Bh5 11.Rd1 Nbd7 12.e4 Re8 13.Bf4
Qa5 14.e5 Nd5 15.Nxd5 exd5 16.Bd3 Qd8 17.g4 Bg6 18.Bg3 Be7
19.e6 Bxd3 20.exf7+ Kxf7 21.Rxd3 Bd6 22.Ne5+ Bxe5 23.Bxe5 Kg8
24.Re3 1/2-1/2

[Event "Eersel m"]
[Site "Eersel"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "8"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Svetozar Gligoric"]
[ECO "A00"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "24"]

1.g3 g6 2.Bg2 Bg7 3.e4 c5 4.c3 Nc6 5.Ne2 e5 6.O-O Nge7 7.d3
O-O 8.Be3 b6 9.c4 d6 10.Nbc3 Nd4 11.Qd2 Rb8 12.Rab1 Nec6
1/2-1/2

[Event "Eersel m"]
[Site "Eersel"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "9"]
[Result "1/2-1/2"]
[White "Svetozar Gligoric"]
[Black "Jan Hein Donner"]
[ECO "D27"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "35"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.dxc5
Qxd1 8.Rxd1 Bxc5 9.Nbd2 Ke7 10.Nb3 Bd6 11.Bd2 Nc6 12.Nfd4 Nxd4
13.Nxd4 Bd7 14.Rac1 Rhc8 15.Be2 Rxc1 16.Rxc1 Rc8 17.Rxc8 Bxc8
18.Nc2 1/2-1/2

[Event "Eersel m"]
[Site "Eersel"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "10"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Svetozar Gligoric"]
[ECO "E75"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "43"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 c5 7.d5 e6
8.Nf3 h6 9.Bh4 exd5 10.cxd5 g5 11.Bg3 Nh5 12.Nd2 Nxg3 13.hxg3
Nd7 14.Nc4 Qe7 15.Qc2 Nf6 16.Ne3 Re8 17.f3 g4 18.Kf2 Rb8 19.a4
a6 20.Bd3 c4 21.Bxc4 Qc7 22.Qd2 1/2-1/2

[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1968.01.10"]
[EventDate "?"]
[Round "7"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Milko Bobotsov"]
[ECO "D31"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "35"]

1.d4 d5 2.c4 e6 3.Nc3 Be7 4.Nf3 Nf6 5.cxd5 exd5 6.Bg5 c6 7.e3
Bf5 8.Bd3 Bxd3 9.Bxf6 Bxf6 10.Qxd3 Be7 11.O-O O-O 12.Rab1 a5
13.a3 Na6 14.Na4 Bd6 15.Qc3 b5 16.Nc5 Nxc5 17.dxc5 Be7 18.Qc2
1/2-1/2

[Event "Bamberg"]
[Site "Bamberg"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "7"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Lothar M Schmid"]
[ECO "A55"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "47"]

1.d4 Nf6 2.c4 d6 3.Nc3 e5 4.Nf3 Nbd7 5.e4 Be7 6.Be2 O-O 7.O-O
c6 8.Re1 Re8 9.Rb1 a6 10.a3 b5 11.cxb5 cxb5 12.Bf1 h6 13.d5
Nb6 14.Nd2 Bd7 15.Na2 Qc7 16.Bd3 a5 17.Qe2 Reb8 18.Bxb5 Bxb5
19.Qxb5 Nbxd5 20.Qc4 Qxc4 21.Nxc4 Nb6 22.Nxb6 Rxb6 23.Bd2 Rab8
24.Bxa5 1/2-1/2

[Event "IBM"]
[Site "Amsterdam"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "8"]
[Result "1/2-1/2"]
[White "F Kuijpers"]
[Black "Jan Hein Donner"]
[ECO "C08"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "58"]

1.e4 e6 2.d4 d5 3.Nd2 c5 4.exd5 exd5 5.Bb5+ Nc6 6.Qe2+ Be7
7.dxc5 Nf6 8.Ngf3 O-O 9.Nb3 Ne4 10.O-O Nxc5 11.Nxc5 Bxc5 12.c3
Bg4 13.Qd3 Qd6 14.Bg5 h6 15.Bh4 f5 16.h3 Bxf3 17.Qxf3 g5
18.Bg3 f4 19.Bh2 Ne5 20.Qh5 a6 21.Ba4 Kg7 22.Bc2 Qf6 23.Rfe1
Rae8 24.Rad1 Re7 25.Kf1 Rd8 26.g3 fxg3 27.Bxg3 Nc4 28.Rxe7+
Bxe7 29.Kg2 Bd6 1/2-1/2

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Ratmir Kholmov"]
[Black "Jan Hein Donner"]
[ECO "A45"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "109"]

1.d4 Nf6 2.Nc3 d5 3.Bg5 Bf5 4.e3 e6 5.Bd3 Bxd3 6.Qxd3 c6 7.Nf3
Be7 8.O-O Nbd7 9.Rad1 O-O 10.e4 dxe4 11.Nxe4 Nxe4 12.Bxe7 Qxe7
13.Qxe4 Rfd8 14.c4 Nf6 15.Qe2 c5 16.dxc5 Qxc5 17.Ne5 Qc7 18.g3
h6 19.f4 Rxd1 20.Rxd1 Rd8 21.Kg2 Rd6 22.Rxd6 Qxd6 23.Qd3 Qxd3
24.Nxd3 Kf8 25.Kf3 Ke7 26.Nc5 b6 27.Nd3 Nd7 28.b4 Kd6 29.Ke4
h5 30.Ne5 f6 31.Nd3 Kc6 32.Kd4 a5 33.a3 axb4 34.axb4 b5
35.cxb5+ Kxb5 36.Kc3 Kc6 37.Kc4 Nb6+ 38.Kd4 Nd7 39.Ne1 Kb5
40.Nc2 Kc6 41.Ke4 Kd6 42.Nd4 g6 43.Nb5+ Kc6 44.Nc3 Kd6 45.Kd4
e5+ 46.fxe5+ Nxe5 47.Ne4+ Kc6 48.h3 Nd7 49.Nc3 Nb6 50.b5+ Kd6
51.h4 Ke6 52.Ne4 Nc8 53.Kc5 Ke5 54.Nd2 g5 55.Nc4+ 1-0

[Event "Lugano Olympiad"]
[Site "Lugano"]
[Date "1968.??.??"]
[EventDate "1968.10.??"]
[Round "?"]
[Result "0-1"]
[White "Wolfgang Heidenfeld"]
[Black "Jan Hein Donner"]
[ECO "C02"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "88"]

1. e4 c5 2. c3 e6 3. d4 d5 4. e5 Nc6 5. Nf3 Nge7 6. Be3 Nf5
7. Bd3 Nxe3 8. fxe3 Be7 9. O-O O-O 10. Qc2 h6 11. Nbd2 Bd7
12. Rae1 Rc8 13. Qb1 b5 14. dxc5 Bxc5 15. Nb3 Be7 16. Nbd4 b4
17. cxb4 Bxb4 18. Re2 Qb6 19. Qd1 Nxd4 20. exd4 Rc7 21. Rff2
Rfc8 22. Rc2 Be7 23. Rxc7 Rxc7 24. Rc2 f5 25. Rxc7 Qxc7
26. Qd2 g5 27. Ne1 Qb6 28. Qf2 Bd8 29. Bb1 Bb5 30. h3 Qc6
31. Kh2 Qc1 32. Bd3 Ba5 33. b4 Bxb4 34. Nc2 Bxd3 35. Nxb4 Bb5
36. a4 Bxa4 37. Qa2 Qd1 38. Nxd5 Qxd4 39. Nf6+ Kf7 40. Qe2 Bc6
41. Qh5+ Kg7 42. Ne8+ Bxe8 43. Qxe8 Qxe5+ 44. Kh1 Qf6 0-1

[Event "Anglo-Dutch Match rd2"]
[Site "?"]
[Date "1968.??.??"]
[EventDate "2008.08.19"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Raymond Keene"]
[ECO "E45"]
[WhiteElo "2500"]
[BlackElo "2455"]
[PlyCount "78"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Nge2 Ba6 6. Ng3
Bxc3+ 7. bxc3 d5 8. Qf3 O-O 9. cxd5 exd5 10. Bxa6 Nxa6 11. O-O
Re8 12. Qe2 Nb8 13. c4 Nc6 14. Bb2 Na5 15. cxd5 Qxd5 16. Rfc1
Rac8 17. f3 Qg5 18. e4 Nd5 19. Qf1 Qd2 20. Qf2 Qxf2+ 21. Kxf2
Nf4 22. Rc3 c5 23. d5 c4 24. Rc2 Nd3+ 25. Kf1 g6 26. Ne2 b5
27. Bd4 a6 28. Nc1 Ne5 29. Bxe5 Rxe5 30. Nd3 Ree8 31. Nb4 Ra8
32. Kf2 Nb7 33. Ke3 f6 34. Kd4 Kf7 35. Nc6 Nd8 36. Na5 Ke7
37. a4 Nf7 38. f4 Kd7 39. Nc6 Nd6 1-0

[Event "Clare Benedict Cup 15th"]
[Site "Bad Aibling"]
[Date "1968.05.01"]
[EventDate "?"]
[Round "2"]
[Result "1-0"]
[White "Wolfgang Unzicker"]
[Black "Jan Hein Donner"]
[ECO "C92"]
[WhiteElo "2545"]
[BlackElo "2500"]
[PlyCount "35"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5
7. Bb3 O-O 8. c3 d6 9. h3 Bb7 10. d4 Na5 11. Bc2 Nc4 12. b3
Nb6 13. Nbd2 Re8 14. dxe5 dxe5 15. Nxe5 Bd6 16. Nef3 Nxe4
17. Nxe4 Bxe4 18. Bg5 1-0

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1968.??.??"]
[EventDate "1968.??.??"]
[Round "2"]
[Result "1-0"]
[White "Florin Gheorghiu"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "2605"]
[BlackElo "2500"]
[PlyCount "103"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. f4 Bg7 5. Nf3 O-O 6. Bd3 Nc6
7. e5 dxe5 8. fxe5 Nd5 9. Nxd5 Qxd5 10. c3 Bg4 11. h3 Bxf3
12. Qxf3 Qxf3 13. gxf3 e6 14. Be4 Rab8 15. h4 h5 16. Bg5 Rfe8
17. Bxc6 bxc6 18. b4 a5 19. a3 Rb6 20. Kd2 Ra8 21. Rhb1 f6
22. exf6 Bh8 23. Bf4 Rb7 24. bxa5 Rba7 25. a6 Rxa6 26. Rb7
R6a7 27. Rxc7 Rxc7 28. Bxc7 Bxf6 29. Bg3 Kf7 30. a4 g5
31. hxg5 Bxg5+ 32. Kd3 h4 33. Bh2 Bd8 34. c4 Ke8 35. Ke4 Kd7
36. Be5 Bc7 37. Rg1 Bxe5 38. Kxe5 c5 39. d5 exd5 40. Rg7+ Kc6
41. cxd5+ Kb6 42. Rg6+ Kb7 43. Rh6 Rxa4 44. f4 c4 45. Rxh4 c3
46. Rh2 Rc4 47. Rc2 Kc7 48. f5 Kd7 49. f6 Rc8 50. f7 Ke7
51. d6+ Kxf7 52. d7 1-0

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1968.??.??"]
[EventDate "1968.??.??"]
[Round "4"]
[Result "1/2-1/2"]
[White "Kick Langeweg"]
[Black "Jan Hein Donner"]
[ECO "D78"]
[WhiteElo "2455"]
[BlackElo "2500"]
[PlyCount "78"]

1. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 c6 5. O-O O-O 6. d4 d5
7. b3 Bf5 8. Bb2 Ne4 9. Nbd2 Qa5 10. Qc1 Nd7 11. Nxe4 Bxe4
12. Re1 Rad8 13. Bc3 Qa6 14. Bf1 dxc4 15. Nd2 Nf6 16. bxc4 Qb6
17. f3 Bf5 18. e4 Bc8 19. Rb1 Qc7 20. Qb2 Ne8 21. f4 c5 22. d5
Bxc3 23. Qxc3 f6 24. Bg2 b6 25. Re3 Ng7 26. h3 e5 27. Rf1 Rde8
28. Ref3 f5 29. Re3 exf4 30. gxf4 fxe4 31. Nxe4 Nh5 32. Rfe1
Qxf4 33. d6 Bb7 34. Rf1 Qh4 35. Nf6+ Nxf6 36. Rxe8 Nxe8
37. Rxf8+ Kxf8 38. Qh8+ Kf7 39. d7 Nf6 1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1968.??.??"]
[EventDate "1968.??.??"]
[Round "5"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Nikola Padevsky"]
[ECO "D34"]
[WhiteElo "2500"]
[BlackElo "2460"]
[PlyCount "54"]

1. d4 d5 2. c4 e6 3. Nc3 c5 4. cxd5 exd5 5. Nf3 Nc6 6. g3 Nf6
7. Bg2 Be7 8. O-O O-O 9. Bg5 Bf5 10. Rc1 h6 11. Bxf6 Bxf6
12. dxc5 d4 13. Nb5 Qd7 14. Nd6 Be6 15. a3 a5 16. Ne1 a4
17. Nd3 Bb3 18. Qd2 Be7 19. Nc4 Rad8 20. Na5 Nxa5 21. Qxa5 Bg5
22. f4 Bf6 23. c6 bxc6 24. Rxc6 Qe7 25. Bf3 Qe3+ 26. Kg2 Rfe8
27. Rfc1 Rb8 1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1968.??.??"]
[EventDate "1968.??.??"]
[Round "6"]
[Result "1/2-1/2"]
[White "Aleksandar Matanovic"]
[Black "Jan Hein Donner"]
[ECO "C07"]
[WhiteElo "2500"]
[BlackElo "2500"]
[PlyCount "25"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Ngf3 a6 6. dxc5
Bxc5 7. Nb3 Ba7 8. Be2 Nf6 9. O-O O-O 10. Nfd4 Nbd7 11. Bf4
Re8 12. c3 Ne5 13. Nd2 1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1968.??.??"]
[EventDate "1968.??.??"]
[Round "10"]
[Result "1/2-1/2"]
[White "Nikola Karaklajic"]
[Black "Jan Hein Donner"]
[ECO "C01"]
[WhiteElo "2365"]
[BlackElo "2500"]
[PlyCount "25"]

1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Nc6 5. c3 Be6 6. Bf4 Qd7
7. Nf3 O-O-O 8. O-O f6 9. Re1 Nce7 10. Nbd2 Ng6 11. Bg3 Nh6
12. Nb3 Bf5 13. Qc2 1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1968.??.??"]
[EventDate "1968.??.??"]
[Round "13"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Hans Ree"]
[ECO "E73"]
[WhiteElo "2500"]
[BlackElo "2520"]
[PlyCount "67"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 h6
7. Bf4 Nc6 8. d5 e5 9. Be3 Nd4 10. Bxd4 exd4 11. Qxd4 Re8
12. Qd3 Qe7 13. f3 a6 14. Qd2 c6 15. Bd3 cxd5 16. cxd5 Nd7
17. Nge2 Qh4+ 18. g3 Qe7 19. O-O h5 20. h3 Ne5 21. Kg2 b5
22. b4 Bd7 23. Rac1 Rac8 24. a3 f5 25. Nd4 Nxd3 26. Qxd3 Qe5
27. Nc6 Bxc6 28. dxc6 Rxc6 29. Qd5+ Qxd5 30. Nxd5 Rxc1
31. Rxc1 fxe4 32. fxe4 Rxe4 33. Rc6 Re2+ 34. Kf3 1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1968.??.??"]
[EventDate "1968.??.??"]
[Round "14"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Dragoljub M Ciric"]
[ECO "E75"]
[WhiteElo "2500"]
[BlackElo "2294"]
[PlyCount "80"]

1. d4 Nf6 2. c4 c5 3. d5 d6 4. Nc3 g6 5. e4 Bg7 6. Be2 O-O
7. Bg5 a6 8. a4 Qa5 9. Bd2 Qc7 10. Nf3 e6 11. O-O exd5
12. cxd5 Re8 13. Qc2 Bg4 14. h3 Bxf3 15. Bxf3 Nbd7 16. a5 Re7
17. Rfe1 Rae8 18. Na4 Ne5 19. Be2 Ned7 20. Bd3 Ne5 21. Bf1
Ned7 22. f3 Nh5 23. Bc3 Ne5 24. Qf2 Nf4 25. Red1 f5 26. g3
fxe4 27. fxe4 Nh5 28. Bg2 Rf8 29. Qe3 Ref7 30. Rf1 Nc4 31. Qd3
Rxf1+ 32. Rxf1 Rxf1+ 33. Bxf1 Nxa5 34. e5 c4 35. Qe3 Bxe5
36. Bxe5 dxe5 37. Nb6 Nxg3 38. d6 Qxd6 39. Bg2 Nf5 40. Qf2 Qd4
0-1

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1968.??.??"]
[EventDate "1968.??.??"]
[Round "15"]
[Result "0-1"]
[White "Dirk Daniel Van Geet"]
[Black "Jan Hein Donner"]
[ECO "A01"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "52"]

1. b3 e5 2. Bb2 d6 3. d4 exd4 4. Qxd4 Nf6 5. g3 Be7 6. Bg2 O-O
7. Nh3 Re8 8. Nf4 Bf8 9. O-O Nc6 10. Qd1 Ne5 11. c4 c6 12. Nc3
a5 13. Qc2 Ned7 14. Rad1 Nc5 15. Rb1 g6 16. Qd2 a4 17. b4 Ncd7
18. Rfd1 Ne5 19. Qd4 Bg7 20. Ba1 Bf5 21. Rbc1 Nfd7 22. Kh1 Ng4
23. Qxd6 Nxf2+ 24. Kg1 Nxd1 25. Rxd1 Qb6+ 26. c5 Qxb4 0-1

[Event "IBM"]
[Site "Amsterdam NED"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "4"]
[Result "1/2-1/2"]
[White "Alexander Kotov"]
[Black "Jan Hein Donner"]
[ECO "A15"]
[WhiteElo "2203"]
[BlackElo "2500"]
[PlyCount "83"]

1.c4 Nf6 2.Nf3 g6 3.b3 Bg7 4.Bb2 O-O 5.g3 d6 6.Bg2 e5 7.O-O
Nfd7 8.d4 e4 9.Ne1 Re8 10.Nc3 f5 11.Nc2 Nf6 12.d5 Nbd7 13.Qd2
a5 14.Nb5 Nc5 15.Ne3 Bd7 16.Nd4 h5 17.Bc3 Ng4 18.Nxg4 hxg4
19.Nc2 Bxc3 20.Qxc3 Kf7 21.f3 gxf3 22.exf3 exf3 23.Rxf3 Qf6
24.Raf1 Qxc3 25.Rxc3 Re2 26.Rf2 Ne4 27.Bxe4 Rxe4 28.Rf4 Re2
29.Rf2 Re4 30.Re3 Rxe3 31.Nxe3 Re8 32.Re2 Re4 33.Kf2 f4
34.gxf4 Rxf4+ 35.Ke1 Kf6 36.Kd2 Rf3 37.Nd1 Bf5 38.Re3 Rxe3
39.Kxe3 Ke5 40.Nc3 c6 41.dxc6 bxc6 42.Ne2 1/2-1/2

[Event "Bamberg"]
[Site "Bamberg"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "1"]
[Result "0-1"]
[White "Heikki M J Westerinen"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "2344"]
[BlackElo "2500"]
[PlyCount "76"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Be2 c5 7.dxc5
Qa5 8.O-O Qxc5+ 9.Kh1 Nc6 10.Nd2 a5 11.Nc4 Ng4 12.Nd5 Nf2+
13.Rxf2 Qxf2 14.Be3 Qh4 15.g3 Qh3 16.Ncb6 Rb8 17.c3 Kh8 18.Nc7
Bf6 19.Bf3 Qh6 20.Qd2 Rd8 21.Rd1 Qf8 22.Nbd5 Bg7 23.Bb6 Bd7
24.Nb5 Ne5 25.Be2 Ng4 26.Rf1 e6 27.Bxd8 Qxd8 28.Nxd6 Nh6
29.Ne3 Bc6 30.Bf3 e5 31.Ng4 Qe7 32.fxe5 Nxg4 33.Bxg4 Rf8
34.Bf3 Qxe5 35.Qf4 Qe6 36.Bg2 Kg8 37.Rd1 Be5 38.Qd2 Rd8 0-1

[Event "Bamberg"]
[Site "Bamberg"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Rudolf Teschner"]
[ECO "D19"]
[WhiteElo "2500"]
[BlackElo "2295"]
[PlyCount "65"]

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.e3 e6 7.Bxc4
Bb4 8.O-O O-O 9.Qe2 Nbd7 10.e4 Bg6 11.Bd3 Bh5 12.e5 Nd5
13.Nxd5 cxd5 14.Qe3 Bg6 15.Ng5 Re8 16.f4 Nf8 17.g4 Bxd3
18.Qxd3 Qc7 19.f5 Qc4 20.Qd1 f6 21.Nf3 Rac8 22.g5 exf5 23.gxf6
gxf6 24.Nh4 fxe5 25.Nxf5 Rc6 26.Nh6+ Kg7 27.Rf7+ Kh8 28.Rxb7
Rg6+ 29.Kh1 exd4 30.Nf7+ Kg8 31.Nh6+ Kh8 32.Nf7+ Kg8 33.Nh6+
1/2-1/2

[Event "Bamberg"]
[Site "Bamberg"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "3"]
[Result "1/2-1/2"]
[White "Wolfgang Unzicker"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "2433"]
[BlackElo "2500"]
[PlyCount "41"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nc6 7.e5
dxe5 8.fxe5 Ng4 9.Be4 f6 10.h3 Nh6 11.exf6 exf6 12.Be3 Nf5
13.Bf2 Bh6 14.O-O Ne3 15.Bxe3 Bxe3+ 16.Kh1 Ne7 17.Qe1 Bh6
18.Qh4 Bg7 19.Rfe1 Qd6 20.Bd3 Nf5 21.Qf2 1/2-1/2

[Event "Bamberg"]
[Site "Bamberg"]
[Date "1968.??.??"]
[EventDate "?"]
[Round "4"]
[Result "1/2-1/2"]
[White "Petrosian"]
[Black "Jan Hein Donner"]
[ECO "D14"]
[WhiteElo "2645"]
[BlackElo "2500"]
[PlyCount "28"]

1.Nf3 Nf6 2.d4 d5 3.c4 c6 4.cxd5 cxd5 5.Nc3 Nc6 6.Bf4 Bf5 7.e3
e6 8.Bb5 Nd7 9.Ne5 Ncxe5 10.Bxe5 a6 11.Bxd7+ Qxd7 12.O-O b5
13.Rc1 f6 14.Bg3 Rc8 1/2-1/2

[Event "Anglo-Dutch match, Vlissingen"]
[Site "?"]
[Date "1968.??.??"]
[EventDate "2009.08.20"]
[Round "?"]
[Result "1-0"]
[White "Raymond Keene"]
[Black "Jan Hein Donner"]
[ECO "D79"]
[WhiteElo "2455"]
[BlackElo "2500"]
[PlyCount "92"]

1. c4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 c6 5. d4 O-O 6. O-O d5
7. cxd5 cxd5 8. Ne5 Ng4 9. Nxg4 Bxg4 10. Nc3 Nc6 11. h3 Be6
12. Be3 Qd7 13. Kh2 Rfd8 14. Qd2 f5 15. Rac1 Bf7 16. Na4 b6
17. b3 e6 18. Nb2 a5 19. Na4 Qb7 20. Bh6 Bxh6 21. Qxh6 Rdc8
22. Rfd1 Be8 23. Qe3 Bd7 24. Nb2 Nb4 25. Nc4 Qb8 26. a3 Nc6
27. Ne5 Nxe5 28. dxe5 Qb7 29. h4 Rxc1 30. Rxc1 Rc8 31. Rxc8+
Bxc8 32. Qg5 Qd7 33. h5 Qe8 34. Bf3 Bd7 35. Kg2 Kg7 36. Qf6+
Kg8 37. Qg5 Kg7 38. Qf6+ Kg8 39. hxg6 hxg6 40. g4 fxg4
41. Bxg4 Kh7 42. e3 Bc8 43. Be2 Bb7 44. Kg3 Bc6 45. Bd3 Kh6
46. Kg4 Qg8 1-0

[Event "Netherlands"]
[Site "It, Beverwijk"]
[Date "1969.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Mikhail Botvinnik"]
[ECO "D79"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "85"]

1.d4 Nf6 2.c4 g6 3.g3 c6 4.Bg2 d5 5.cxd5 cxd5 6.Nf3 Bg7 7.O-O
O-O 8.Nc3 Ne4 9.Nxe4 dxe4 10.Ng5 Qxd4 11.Qxd4 Bxd4 12.Nxe4 Nc6
13.Nc3 Rd8 14.Rd1 Be6 15.Be3 Bxe3 16.fxe3 Na5 17.b4 Nc4 18.Kf2
Nd6 19.Ne4 Nxe4+ 20.Bxe4 Rab8 21.a3 b6 22.Rdc1 Rdc8 23.Bd3
Rxc1 24.Rxc1 Rc8 25.Rxc8+ Bxc8 26.e4 e5 27.Bc4 Kf8 28.Bd5 Ke7
29.Ke3 Ba6 30.Kf3 Bb5 31.Ke3 Bd7 32.Kd3 Bg4 33.Ke3 Bh3 34.Kf3
Bd7 35.Ke3 Bb5 36.Kf3 a5 37.Ke3 h6 38.Kd2 axb4 39.axb4 Be8
40.Kd3 Kd6 41.Bb3 f5 42.exf5 gxf5 43.e4 1/2-1/2

[Event "BRD"]
[Site "BRD"]
[Date "1969.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Klaus V Darga"]
[Black "Jan Hein Donner"]
[ECO "E81"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "53"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. f3 O-O 6. Be3 c6
7. Bd3 a6 8. Nge2 b5 9. b3 e5 10. d5 cxd5 11. cxd5 Nh5 12. O-O
f5 13. exf5 gxf5 14. Rc1 Nd7 15. Qd2 Nb6 16. a4 bxa4 17. Nxa4
Nxa4 18. bxa4 Nf6 19. Rc6 Qe7 20. Rxc8 Rfxc8 21. Bxf5 Rc4
22. Ng3 Kh8 23. Be6 Qc7 24. Nf5 Ng8 25. a5 Rc2 26. Qb4 Bf8
27. Qg4 1-0

[Event "Wijk aan Zee"]
[Site "Wijk aan Zee"]
[Date "1969.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Efim Geller"]
[ECO "E67"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "88"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nbd7 7.O-O
e5 8.e4 c6 9.Rb1 exd4 10.Nxd4 Re8 11.Re1 Ng4 12.Qxg4 Bxd4
13.Qd1 Bg7 14.Qc2 Qa5 15.Bd2 Qh5 16.Qd1 Qxd1 17.Nxd1 Ne5
18.Ne3 Nd3 19.Re2 Nxb2 20.Bb4 Na4 21.Rd1 a5 22.Be1 Bf8 23.f3
Be6 24.Bf1 Red8 25.Rc2 Bg7 26.Kf2 Nc5 27.Kg2 h5 28.h3 Bf6
29.Bf2 a4 30.Rcd2 Be7 31.Nc2 Re8 32.Nd4 Bc8 33.Nc2 a3 34.Be3
Na4 35.Rb1 Nb2 36.Bd4 Bg5 37.Rf2 h4 38.Nxa3 Rxa3 39.Rfxb2 hxg3
40.c5 Ra4 41.Bg1 Bf4 42.cxd6 Bxd6 43.Be3 f5 44.Rd2 Bc7 0-1

[Event "Amsterdam"]
[Site "09"]
[Date "1969.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Borislav Ivkov"]
[ECO "B06"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "175"]

1.d4 g6 2.e4 Bg7 3.Nc3 d6 4.f4 a6 5.Nf3 b5 6.Bd3 Bb7 7.Be3 Nd7
8.a4 b4 9.Ne2 Ngf6 10.Nd2 c5 11.c3 bxc3 12.bxc3 cxd4 13.cxd4
Qa5 14.O-O Ng4 15.Rf3 Nxe3 16.Rxe3 Qb6 17.Rb1 Qa7 18.Kh1 Nf6
19.h3 O-O 20.Bc2 Rac8 21.Reb3 Bc6 22.Rc3 Bd7 23.Rxc8 Rxc8
24.Bd3 Bc6 25.Qb3 Nd7 26.Nf3 Rb8 27.Qa2 Rxb1+ 28.Bxb1 Qb7
29.Bd3 e6 30.Nc3 Nf6 31.Qc4 a5 32.Nd2 Nh5 33.Ne2 d5 34.Qc2
dxe4 35.Bxe4 Bxe4 36.Nxe4 Bxd4 37.Nxd4 Qxe4 38.Qxe4 Ng3+
39.Kh2 Nxe4 40.Nb3 Nc3 41.Nxa5 Nxa4 42.Kg3 f6 43.Kf3 Kf7
44.Nc4 Nc5 45.Ke3 Ke7 46.Kd4 Nb7 47.Nd2 Nd6 48.Nf3 Nf5+ 49.Kd3
Ng3 50.Ke3 Kd6 51.Kf2 Ne4+ 52.Ke3 Kd5 53.Nd4 Ng3 54.Nb5 Kc5
55.Nc7 Nf5+ 56.Ke4 Kd6 57.Nb5+ Kc6 58.Nc3 Kc5 59.Kd3 Nd6
60.Ne2 h6 61.Nc3 Kb4 62.Ne2 Nb5 63.h4 Kc5 64.g4 Kd5 65.Ke3 Nd6
66.Nc3+ Kc4 67.Ne2 h5 68.g5 Nf5+ 69.Ke4 Nd6+ 70.Ke3 fxg5
71.hxg5 Kd5 72.Nc3+ Kc4 73.Ne2 Kd5 74.Nc3+ Kc5 75.Ne2 Kc4
76.Ng1 Kd5 77.Nf3 Nf5+ 78.Kd3 h4 79.Ne5 h3 80.Ng4 Nh4 81.Ke3
Ng2+ 82.Kf3 Kd4 83.Kg3 Ke4 84.Nf2+ Kf5 85.Nxh3 Ne3 86.Nf2 Nf1+
87.Kf3 Nd2+ 88.Ke3 1/2-1/2

[Event "Wijk aan Zee (14.01.69)"]
[Site "01"]
[Date "1969.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Paul Keres"]
[ECO "D25"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "25"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 Be6 5.Na3 c5 6.Bxc4 Bxc4
7.Nxc4 e6 8.dxc5 Qxd1+ 9.Kxd1 Bxc5 10.b3 Nc6 11.Bb2 Ke7 12.Ke2
Rhd8 13.Rhd1 1/2-1/2

[Event "Havana"]
[Site "Havana"]
[Date "1969.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Viktor Korchnoi"]
[ECO "E45"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "52"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Nge2 Ba6 6. Ng3 h5
7. h4 Bb7 8. Bd2 a5 9. a3 Bd6 10. Rh3 Nc6 11. Be2 Bxg3
12. Rxg3 Ne7 13. Bd3 Ng4 14. e4 Nc6 15. Bg5 f6 16. Be3 Qe7
17. Be2 O-O-O 18. Bxg4 hxg4 19. Qxg4 f5 20. Qg5 Qxg5 21. Bxg5
Rdf8 22. O-O-O fxe4 23. Nxe4 d5 24. cxd5 exd5 25. Nc3 Rxf2
26. Nxd5 Re8 1/2-1/2

[Event "Beverwijk (Netherlands)"]
[Site "Beverwijk (Netherlands)"]
[Date "1969.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "William James Lombardy"]
[ECO "A55"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "86"]

1.d4 Nf6 2.c4 d6 3.Nc3 e5 4.Nf3 Nbd7 5.e4 Be7 6.Be2 O-O 7.O-O
Re8 8.Re1 c6 9.Bf1 Qc7 10.h3 Bf8 11.g3 a6 12.a3 b5 13.b3 bxc4
14.bxc4 exd4 15.Nxd4 Nc5 16.Bg2 Bb7 17.Qc2 Nfd7 18.Be3 a5
19.Nb3 Ne6 20.Rab1 Ba6 21.Na4 Ndc5 22.Naxc5 dxc5 23.a4 Rab8
24.Bd2 Nd4 25.Nxd4 Rxb1 26.Rxb1 cxd4 27.Qd3 Rd8 28.f4 Bb4
29.Bxb4 axb4 30.Rxb4 Qa5 31.Rb3 f6 32.e5 fxe5 33.fxe5 Qc5
34.Bf1 Qxe5 35.Rb6 Bc8 36.g4 h5 37.Be2 Re8 38.Rb2 hxg4 39.hxg4
Qf4 40.Rd2 Re3 41.Qxd4 Qg3+ 42.Kf1 Re8 43.Qd6 Qh3+ 1/2-1/2

[Event "Habana (Cuba)"]
[Site "Habana (Cuba)"]
[Date "1969.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Bruno Parma"]
[ECO "E56"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "70"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 O-O 6.Nf3 d5 7.O-O
Nc6 8.a3 dxc4 9.Bxc4 Ba5 10.Qd3 a6 11.dxc5 Qxd3 12.Bxd3 Bxc3
13.bxc3 Rd8 14.Bc2 Na5 15.e4 Bd7 16.Be3 Bc6 17.e5 Nd7 18.Bd4
Rdc8 19.Nd2 Bd5 20.Rfb1 Nxc5 21.a4 Nd7 22.f4 f5 23.exf6 Nxf6
24.Bd3 Nh5 25.g3 Nc6 26.Bf2 Ne7 27.c4 Bc6 28.Ne4 Rd8 29.Bc2
Nf6 30.Re1 Nxe4 31.Bxe4 Rac8 32.Rab1 Rd7 33.Bc2 Rd2 34.Rbc1
Kf7 35.Kf1 Rcd8 1/2-1/2

[Event "Leeuwarden NED ch"]
[Site "Leeuwarden NED ch"]
[Date "1969.??.??"]
[EventDate "?"]
[Round "1"]
[Result "0-1"]
[White "Joop Piket"]
[Black "Jan Hein Donner"]
[ECO "E70"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "80"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. Bg5 c5 6. d5 d6
7. f4 Qb6 8. Qd2 e6 9. Bd3 exd5 10. exd5 Na6 11. Nge2 Bd7
12. O-O Nb4 13. Bb1 h6 14. Bh4 Rae8 15. a3 Na6 16. h3 Nc7
17. Kh1 Re7 18. Bf2 Qa6 19. Bd3 b5 20. cxb5 Qb7 21. f5 Ncxd5
22. Nxd5 Nxd5 23. Bg3 Ne3 24. Rf3 Nxf5 25. Bxf5 Bxf5 26. Nc3
Re6 27. Bf4 h5 28. Rd1 Rfe8 29. Bh6 Bxh6 30. Qxh6 Re1+
31. Rxe1 Rxe1+ 32. Kh2 Re5 33. a4 d5 34. Qf4 Qe7 35. a5 d4
36. Na4 Re2 37. b6 axb6 38. axb6 Be4 39. Rf2 Rxf2 40. Qxf2 Bc6
0-1

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1969.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Lajos Portisch"]
[Black "Jan Hein Donner"]
[ECO "A35"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "87"]

1.c4 c5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 cxd4 5.Nxd4 d5 6.cxd5 Nxd5
7.Nxc6 bxc6 8.Bd2 Nxc3 9.Bxc3 Qxd1+ 10.Rxd1 f6 11.g3 e5 12.Bg2
Bd7 13.O-O Rc8 14.Rxd7 Kxd7 15.Bh3+ Kc7 16.Ba5+ Kb7 17.Bxc8+
Kxc8 18.Rc1 Kb7 19.Rd1 Ka6 20.Bc3 Be7 21.Rd7 Re8 22.Kg2 Kb6
23.Kf3 h5 24.h3 a6 25.Ke4 g6 26.g4 hxg4 27.hxg4 a5 28.f3 Ka6
29.a4 Kb6 30.Be1 Bb4 31.Bf2+ Bc5 32.Bh4 Rf8 33.Kd3 f5 34.Bd8+
Ka6 35.g5 Bd4 36.b3 Rh8 37.Rd6 Kb7 38.Bxa5 Rh1 39.Bc3 c5
40.Bxd4 exd4 41.Rxg6 Rc1 42.Rf6 Rc3+ 43.Kd2 Rxb3 44.g6 1-0

[Event "Wijk aan Zee"]
[Site "05"]
[Date "1969.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Lajos Portisch"]
[ECO "E92"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "132"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Nf3 e5 7.Be3
Qe7 8.d5 Na6 9.Nd2 Nd7 10.O-O f5 11.f3 f4 12.Bf2 c5 13.dxc6
bxc6 14.a3 Nac5 15.b4 Ne6 16.Nb3 c5 17.Nd5 Qd8 18.Qd2 Nd4
19.Nxd4 exd4 20.Nxf4 Bh6 21.g3 Ne5 22.Be1 d3 23.Bd1 Bh3 24.Rf2
Rxf4 25.gxf4 Qh4 26.fxe5 Bxd2 27.Bxd2 dxe5 28.Be3 Rc8 29.bxc5
Rb8 30.Ba4 Qf6 31.c6 Qd6 32.Bb5 a6 33.c5 Qe6 34.Bxa6 Qxc6
35.Bxd3 Kg7 36.a4 Rb3 37.Rd1 Rc3 38.a5 Qa4 39.Rfd2 Qxa5 40.Kf2
Be6 41.Kg3 Qa3 42.Bf2 g5 43.Be2 Qb4 44.Kg2 Kf7 45.Bd3 h5
46.Rb1 Rb3 47.Rdd1 Rxb1 48.Rxb1 Qc3 49.Be2 Qc2 50.Re1 h4
51.Be3 Bc4 52.Kf2 g4 53.fxg4 Bb5 54.Bg5 h3 55.Be3 Bc6 56.Rg1
Bb5 57.Re1 Bc6 58.Rg1 Qxe4 59.Bd1 Kg7 60.Be2 Qd5 61.Ke1 Qa2
62.Kf1 Qf7+ 63.Ke1 Bg2 64.Bd2 e4 65.Bc3+ Kg6 66.Be5 Qd5 0-1

[Event "Havana Cap-mem"]
[Site "04"]
[Date "1969.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Alexey Suetin"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "91"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nc6 7.e5
dxe5 8.fxe5 Ng4 9.Be4 f5 10.Bxc6 bxc6 11.h3 Nh6 12.Bf4 Nf7
13.Qd2 Be6 14.O-O-O Bd5 15.Ng5 e6 16.h4 h5 17.Rh3 Qe7 18.Nxf7
Kxf7 19.Na4 Kg8 20.Nc5 Kh7 21.Bg5 Qe8 22.Qe2 Rf7 23.c4 Be4
24.Rhh1 Bf8 25.Nxe4 fxe4 26.Qxe4 Rf5 27.g4 hxg4 28.Qxg4 Bh6
29.Qe4 Qd7 30.Rdg1 Rg8 31.Qe3 Bxg5 32.hxg5 Kg7 33.Rh6 Kf8
34.Qa3+ Ke8 35.Qxa7 Qf7 36.Rhh1 Rf2 37.Kb1 Rf8 38.a3 Kd7
39.Ka1 Qf3 40.d5 exd5 41.e6+ Kxe6 42.Qxc7 dxc4 43.Re1+ Re2
44.Rxe2+ Qxe2 45.Qxc6+ Kf7 46.Rh7+ 1-0

[Event "4, Leeuwarden NED ch"]
[Site "4, Leeuwarden NED ch"]
[Date "1969.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Timman"]
[Black "Jan Hein Donner"]
[ECO "E14"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "57"]

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.e3 Bb7 5.Bd3 Be7 6.O-O O-O 7.Nc3
d5 8.b3 Nbd7 9.Bb2 Ne4 10.Rc1 f5 11.Qe2 a6 12.Na4 c6 13.Nd2 b5
14.Nc3 Bd6 15.f3 Nxc3 16.Bxc3 c5 17.cxb5 axb5 18.Bxb5 Rxa2
19.Ra1 Rxa1 20.Rxa1 Nf6 21.Qd3 Qc7 22.Ba5 Qe7 23.Bb6 Bxh2+
24.Kf1 Ne4 25.Ke2 Qg5 26.g4 fxg4 27.fxe4 g3 28.Bc7 Qh5+ 29.Nf3
0-1

[Event "Havana"]
[Site "2048"]
[Date "1969.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Wolfgang Uhlmann"]
[Black "Jan Hein Donner"]
[ECO "E92"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "78"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 O-O 5.Nf3 d6 6.Be2 e5 7.Be3
Ng4 8.Bg5 f6 9.Bc1 Nc6 10.O-O f5 11.d5 Ne7 12.Ng5 Nf6 13.b4 h6
14.Ne6 Bxe6 15.dxe6 Nxe4 16.Nxe4 fxe4 17.Qc2 c6 18.Qxe4 d5
19.Qg4 Rf6 20.Bb2 Qd6 21.f4 Rxf4 22.Rxf4 exf4 23.c5 Qc7
24.Bxg7 Kxg7 25.Rf1 Rf8 26.g3 g5 27.Bd3 Qe5 28.Kg2 Nf5 29.Bxf5
Qxf5 30.Rxf4 Qc2+ 31.Kf1 Rxf4+ 32.gxf4 Qc1+ 33.Ke2 Qxf4 34.Qh3
Qxb4 35.a3 Qe4+ 36.Kd1 d4 37.Qb3 Qh1+ 38.Ke2 Qg2+ 39.Ke1 Qg1+
0-1

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1969.??.??"]
[EventDate "?"]
[Round "15"]
[Result "1/2-1/2"]
[White "Svetozar Gligoric"]
[Black "Jan Hein Donner"]
[ECO "E52"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "54"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 b6 7.O-O
Bb7 8.a3 Be7 9.cxd5 exd5 10.b4 Ne4 11.Bb2 Nxc3 12.Bxc3 Bd6
13.b5 Qe7 14.Qb1 g6 15.Bb4 c5 16.bxc6 Nxc6 17.Bxd6 Qxd6 18.Rc1
Rfc8 19.Qb2 Rc7 20.Ne5 Rac8 21.Nxc6 Rxc6 22.Bb5 Rxc1+ 23.Rxc1
Rxc1+ 24.Qxc1 Kf8 25.h4 h6 26.g3 Ke7 27.Qc3 Kd8 1/2-1/2

[Event "San Juan"]
[Site "San Juan"]
[Date "1969.10.08"]
[EventDate "?"]
[Round "14"]
[Result "1-0"]
[White "Bent Larsen"]
[Black "Jan Hein Donner"]
[ECO "A01"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "49"]

1.b3 e5 2.Bb2 d6 3.g3 Nf6 4.Bg2 g6 5.e4 Bg7 6.Ne2 O-O 7.O-O
Nh5 8.d4 Nc6 9.Na3 Qe7 10.Nc4 exd4 11.Nxd4 Nxd4 12.Bxd4 Be6
13.Ne3 c6 14.Bxg7 Nxg7 15.Re1 Qc7 16.Qd4 a5 17.Rad1 Rad8
18.Rd2 f5 19.exf5 Nxf5 20.Nxf5 Bxf5 21.Rde2 Qf7 22.Re7 c5
23.Qh4 g5 24.Qxg5+ Qg6 25.Qd2 1-0

[Event "San Juan"]
[Site "San Juan"]
[Date "1969.10.08"]
[EventDate "?"]
[Round "3"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Lothar M Schmid"]
[ECO "A55"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "77"]

1.d4 Nf6 2.c4 d6 3.Nc3 e5 4.Nf3 Nbd7 5.e4 Be7 6.Be2 O-O 7.O-O
c6 8.Rb1 Re8 9.Re1 Bf8 10.Bf1 exd4 11.Nxd4 d5 12.exd5 Rxe1
13.Qxe1 cxd5 14.cxd5 Nb6 15.Bg5 Nbxd5 16.Nxd5 Qxd5 17.Bxf6
gxf6 18.Qc3 Bd7 19.Bc4 Qh5 20.Qb3 Bd6 21.h3 Re8 22.Qxb7 Qg6
23.Rd1 Bxh3 24.Bxf7+ Qxf7 25.Qxf7+ Kxf7 26.gxh3 Rd8 27.Re1 Be5
28.Nc6 Rg8+ 29.Kf1 Bxb2 30.Rb1 Ba3 31.Rb7+ Ke6 32.Rxa7 Bc5
33.Ra6 Kd5 34.Na5 Bd4 35.Nb3 Be5 36.Ra5+ Kc4 37.Ke2 Rg5
38.Ra4+ Kd5 39.f4 1-0

[Event "NED-ch"]
[Site "Leeuwarden"]
[Date "1969.??.??"]
[EventDate "?"]
[Round "10"]
[Result "1/2-1/2"]
[White "F Kuijpers"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "58"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nc6 7.Be3
Ng4 8.Bg1 e5 9.fxe5 dxe5 10.d5 Nd4 11.h3 Nh6 12.Qd2 f5 13.Be3
Nf7 14.O-O-O fxe4 15.Bxe4 Nf5 16.Kb1 Nxe3 17.Qxe3 Qe7 18.Rhe1
Bd7 19.Bd3 a6 20.Ne4 Rae8 21.Bc4 Nd6 22.Be2 Kh8 23.Nc5 Nf5
24.Qg1 Nd4 25.Nxd4 Qxc5 26.Ne6 Qxg1 27.Rxg1 Bxe6 28.dxe6 Re7
29.Rgf1 Bf6 1/2-1/2

[Event "IBM"]
[Site "Amsterdam"]
[Date "1969.??.??"]
[EventDate "?"]
[Round "6"]
[Result "1/2-1/2"]
[White "Klaus V Darga"]
[Black "Jan Hein Donner"]
[ECO "C43"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "46"]

1.e4 e5 2.Nf3 Nf6 3.d4 exd4 4.e5 Ne4 5.Qxd4 d5 6.exd6 Nxd6
7.Bd3 Nc6 8.Qf4 g6 9.O-O Bg7 10.Nc3 O-O 11.Be3 Be6 12.a4 a5
13.Bc5 Qf6 14.Qxf6 Bxf6 15.Nb5 Rfc8 16.Bxd6 cxd6 17.Nxd6 Rc7
18.Be4 Rd8 19.Nb5 Rcd7 20.c3 Ne5 21.Nfd4 Bc4 22.Rfe1 Nd3
23.Bxd3 Bxd3 1/2-1/2

[Event "FRG-NED"]
[Site "Krefeld"]
[Date "1969.??.??"]
[EventDate "?"]
[Round "1"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Klaus V Darga"]
[ECO "D37"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "44"]

1.d4 d5 2.c4 e6 3.Nc3 Be7 4.Bf4 Nf6 5.e3 O-O 6.Nf3 b6 7.cxd5
Nxd5 8.Nxd5 exd5 9.Bd3 c5 10.dxc5 bxc5 11.O-O Nc6 12.Ne5 Nxe5
13.Bxe5 Be6 14.Qc2 g6 15.b3 Rc8 16.e4 c4 17.bxc4 dxc4 18.Be2
c3 19.Bd3 Bd6 20.Bxd6 Qxd6 21.f4 Rfd8 22.Be2 Qc5+ 0-1

[Event "IBM"]
[Site "Amsterdam"]
[Date "1969.??.??"]
[EventDate "?"]
[Round "13"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Evgeni Vasiukov"]
[ECO "E60"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "29"]

1.d4 Nf6 2.c4 g6 3.g3 c5 4.Nf3 cxd4 5.Nxd4 Bg7 6.Bg2 O-O 7.Nc3
Nc6 8.O-O Qa5 9.Nc2 Qh5 10.e4 d6 11.Qxh5 Nxh5 12.Bd2 Bd7 13.b3
Rfc8 14.Rac1 Nf6 15.Rfd1 1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1969.??.??"]
[EventDate "1969.??.??"]
[Round "2"]
[Result "0-1"]
[White "Kick Langeweg"]
[Black "Jan Hein Donner"]
[ECO "E75"]
[WhiteElo "2455"]
[BlackElo "2500"]
[PlyCount "64"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. Be2 d6 6. Bg5 c5
7. d5 e6 8. Qd2 exd5 9. exd5 Re8 10. Nf3 Qb6 11. O-O Bg4
12. h3 Bxf3 13. Bxf3 Nbd7 14. Rae1 a6 15. b3 Qb4 16. Qc1 b5
17. Bd2 bxc4 18. Na4 Qb7 19. bxc4 Ne5 20. Be2 Ne4 21. Ba5 f5
22. Qc2 Qf7 23. Rb1 g5 24. Rb3 Ng6 25. Rfb1 Bd4 26. Be1 Nf4
27. Bf3 h5 28. Rb7 Qg6 29. Bxe4 fxe4 30. R1b6 g4 31. Kh2 Nd3
32. Bc3 gxh3 0-1

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1969.??.??"]
[EventDate "1969.??.??"]
[Round "4"]
[Result "1/2-1/2"]
[White "Lubomir Kavalek"]
[Black "Jan Hein Donner"]
[ECO "B99"]
[WhiteElo "2600"]
[BlackElo "2500"]
[PlyCount "101"]

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. a3 Rb8
12. Bxf6 Nxf6 13. f5 O-O 14. g5 Nd7 15. f6 gxf6 16. gxf6 Nxf6
17. e5 dxe5 18. Nc6 Kh8 19. Nxb8 Qxb8 20. Bg2 b4 21. axb4 Qxb4
22. Rhe1 Qf4+ 23. Qxf4 exf4 24. Bf3 Bc5 25. Kb1 Be3 26. Rd6
Nd7 27. b4 Ne5 28. Be2 Bb7 29. Nd1 Ba7 30. Bxa6 Bb8 31. Rb6
Nf3 32. Re2 Ba8 33. c3 Bc7 34. Rb5 Be4+ 35. Rxe4 Nd2+ 36. Kc2
Nxe4 37. Rb7 Bb8 38. Bd3 f5 39. Re7 e5 40. c4 Bd6 41. Re6 Bxb4
42. Rxe5 Bd6 43. Re6 Bb8 44. Bxe4 fxe4 45. Rxe4 f3 46. Re1
Bxh2 47. Rf1 Bd6 48. Kd3 Bc5 49. Ke4 f2 50. Kd3 h5 51. Nxf2
1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1969.??.??"]
[EventDate "1969.??.??"]
[Round "6"]
[Result "1/2-1/2"]
[White "Pal Benko"]
[Black "Jan Hein Donner"]
[ECO "A07"]
[WhiteElo "2495"]
[BlackElo "2500"]
[PlyCount "51"]

1. Nf3 d5 2. g3 g6 3. c4 c6 4. Qc2 Bg7 5. Bg2 e5 6. d3 Ne7
7. O-O O-O 8. Nbd2 h6 9. Rb1 Be6 10. b4 a6 11. e4 Nd7 12. Re1
Qb8 13. Bb2 dxc4 14. Nxc4 b5 15. Na5 Bxa2 16. Rbc1 Qd6 17. Ba3
Be6 18. Nxc6 Rfc8 19. Nxe7+ Qxe7 20. Qb2 Qd6 21. Red1 Nb6
22. Qa1 Rxc1 23. Rxc1 Qxd3 24. Bb2 Qd6 25. Bxe5 Bxe5 26. Nxe5
1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1969.??.??"]
[EventDate "1969.??.??"]
[Round "8"]
[Result "1-0"]
[White "Fridrik Olafsson"]
[Black "Jan Hein Donner"]
[ECO "B17"]
[WhiteElo "2570"]
[BlackElo "2500"]
[PlyCount "85"]

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nd7 5. Bc4 Ngf6 6. Nxf6+
Nxf6 7. c3 Ne4 8. Bf4 Nd6 9. Bb3 Bf5 10. Nf3 e6 11. Ne5 Be7
12. g4 Bg6 13. Qe2 a5 14. a4 Bh4 15. Bg3 Qe7 16. O-O O-O-O
17. Rae1 Rhe8 18. c4 Bxg3 19. hxg3 Kb8 20. c5 Nc8 21. Qe3 Qc7
22. f4 Re7 23. Qf2 Rde8 24. Re3 f6 25. Nf3 h6 26. Rfe1 Qd7
27. Qd2 h5 28. g5 Bf5 29. Nh4 Bg4 30. Re4 Qd8 31. Qf2 Rd7
32. gxf6 gxf6 33. f5 e5 34. dxe5 Rd2 35. Qf4 Ka7 36. exf6 Rxe4
37. Rxe4 Rxb2 38. Bc4 Qxf6 39. Qe5 Rb1+ 40. Bf1 Qg5 41. f6 Qc1
42. Rf4 Bh3 43. Ng2 1-0

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1969.??.??"]
[EventDate "1969.??.??"]
[Round "9"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Predrag Ostojic"]
[ECO "E53"]
[WhiteElo "2500"]
[BlackElo "2495"]
[PlyCount "55"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5
7. O-O cxd4 8. exd4 dxc4 9. Bxc4 b6 10. Re1 Bb7 11. Bd3 Nbd7
12. Bd2 Rc8 13. Qe2 Re8 14. Rad1 Bf8 15. a3 Qc7 16. Ne5 Nxe5
17. dxe5 Nd5 18. Nxd5 Bxd5 19. Rc1 Qb8 20. h4 Rxc1 21. Bxc1
Rd8 22. Bg5 Rc8 23. h5 Qa8 24. Qg4 Qb7 25. Re3 g6 26. Bf6 Qc7
27. hxg6 fxg6 28. Bxg6 1-0

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1969.??.??"]
[EventDate "1969.??.??"]
[Round "10"]
[Result "0-1"]
[White "Hans Ree"]
[Black "Jan Hein Donner"]
[ECO "B07"]
[WhiteElo "2520"]
[BlackElo "2500"]
[PlyCount "109"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be3 a6 5. f3 b5 6. Qd2 c6
7. g4 h5 8. g5 Nfd7 9. f4 Nb6 10. b3 d5 11. f5 gxf5 12. e5 e6
13. Nce2 c5 14. c3 Nc6 15. a3 c4 16. b4 a5 17. Rb1 axb4
18. axb4 Ra3 19. Nh3 Bd7 20. Rg1 Ne7 21. Qd1 Ng6 22. Bd2 Na4
23. Qc2 Nb6 24. Bc1 Ra6 25. Nef4 Qa8 26. Be2 h4 27. Bh5 Rg8
28. Qd1 Kd8 29. Rg2 Kc7 30. Qf3 Be7 31. Bxg6 fxg6 32. Qf2 Na4
33. Bd2 Qe8 34. Qxh4 Rh8 35. Qf2 Qf7 36. Ng1 Nb6 37. Nf3 Ra2
38. h4 Na4 39. Ne2 Ra8 40. Qe3 Nb2 41. Nf4 R8a3 42. h5 Bxb4
43. Qg1 Bxc3 44. hxg6 Qg8 45. Qh2 Ra1 46. Rxa1 Rxa1+ 47. Ke2
Bxd2 48. Nxd2 Nd3 49. Nxd3 cxd3+ 50. Kxd3 Qxg6 51. Rg1 f4+
52. Ke2 f3+ 53. Ke3 Ra2 54. Rc1+ Kb7 55. Qf4 0-1

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1969.??.??"]
[EventDate "1969.??.??"]
[Round "11"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Zbigniew Doda"]
[ECO "E75"]
[WhiteElo "2500"]
[BlackElo "2410"]
[PlyCount "59"]

1. d4 Nf6 2. c4 c5 3. d5 g6 4. Nc3 d6 5. e4 Bg7 6. Be2 O-O
7. Bg5 e6 8. Qd2 exd5 9. exd5 Re8 10. Nf3 Bg4 11. O-O Nbd7
12. h3 Bxf3 13. Bxf3 Qb6 14. Qc2 a6 15. b3 Qa5 16. Bd2 Qc7
17. Rae1 Rxe1 18. Rxe1 Re8 19. Be2 Re7 20. f4 Qb8 21. Rf1 b5
22. cxb5 axb5 23. Bxb5 Ne4 24. Nxe4 Qxb5 25. Rf3 Qa6 26. Bc3
f5 27. Ng3 Bxc3 28. Rxc3 Nf6 29. Qd2 Qa8 30. Re3 1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1969.??.??"]
[EventDate "1969.??.??"]
[Round "12"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "T Van Scheltinga"]
[ECO "E54"]
[WhiteElo "2500"]
[BlackElo "2325"]
[PlyCount "80"]

1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5
7. O-O dxc4 8. Bxc4 Nc6 9. Bd3 a6 10. Bc2 cxd4 11. exd4 Be7
12. a3 b5 13. Qd3 Bb7 14. Bg5 g6 15. Rad1 b4 16. Na4 bxa3
17. bxa3 Na5 18. Nc5 Bc6 19. Rfe1 Bxc5 20. dxc5 Qxd3 21. Bxd3
Nd5 22. Rb1 Rfc8 23. Bd2 Nb7 24. Rec1 Ne7 25. Ne5 Ra7 26. Rb6
Bd5 27. c6 Nd6 28. Rxa6 Rxa6 29. Bxa6 Ra8 30. Bf1 f6 31. Nd7
Ne4 32. Nb6 Nxd2 33. Nxa8 Nxc6 34. Nc7 Nb3 35. Rd1 Ne7
36. Nxd5 exd5 37. Rb1 Nd2 38. Rb7 Kf8 39. a4 Ne4 40. a5 Nc5
1-0

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1969.??.??"]
[EventDate "1969.??.??"]
[Round "13"]
[Result "1-0"]
[White "A Medina-Garcia"]
[Black "Jan Hein Donner"]
[ECO "B25"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "49"]

1. e4 d6 2. f4 g6 3. g3 Bg7 4. Bg2 c5 5. d3 Nc6 6. Nc3 Bd7
7. Nf3 e6 8. O-O Nge7 9. Be3 Nd4 10. Nh4 O-O 11. Qd2 Rb8
12. Nd1 b5 13. c3 Ndc6 14. f5 exf5 15. exf5 Nxf5 16. Nxf5 gxf5
17. Bh6 Qf6 18. Bxg7 Kxg7 19. Bxc6 Bxc6 20. Ne3 Rbe8 21. Nxf5+
Kh8 22. Nd4 Qd8 23. Nxc6 Qc7 24. Qh6 f5 25. Rae1 1-0

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1969.??.??"]
[EventDate "1969.??.??"]
[Round "15"]
[Result "1/2-1/2"]
[White "Dragoljub M Ciric"]
[Black "Jan Hein Donner"]
[ECO "C09"]
[WhiteElo "2294"]
[BlackElo "2500"]
[PlyCount "28"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. exd5 exd5 6. Bb5
Bd6 7. dxc5 Bxc5 8. O-O Nge7 9. Nb3 Bb6 10. Be3 Bxe3 11. Bxc6+
bxc6 12. fxe3 Bg4 13. Qd4 Bxf3 14. Rxf3 O-O 1/2-1/2

[Event "Netherlands"]
[Site "It, Leiden"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Mikhail Botvinnik"]
[ECO "A84"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "55"]

1.d4 e6 2.c4 f5 3.e3 Nf6 4.Bd3 d5 5.Nf3 Be7 6.O-O O-O 7.b3 Ne4
8.Ba3 Nc6 9.Bxe7 Qxe7 10.Qc1 Bd7 11.Nc3 Nxc3 12.Qxc3 Be8
13.Ne1 f4 14.e4 e5 15.exd5 Nxd4 16.Nc2 c5 17.f3 Qf6 18.Nxd4
exd4 19.Qc2 g6 20.Rae1 Bd7 21.Re4 Bf5 22.Re2 Rae8 23.Be4 Re5
24.Rfe1 Rfe8 25.Bxf5 gxf5 26.Rxe5 Rxe5 27.Rxe5 Qxe5 28.Qd2
1/2-1/2

[Event "Netherlands"]
[Site "Leiden"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Mikhail Botvinnik"]
[Black "Jan Hein Donner"]
[ECO "A07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "82"]

1.Nf3 Nf6 2.g3 g6 3.Bg2 Bg7 4.O-O O-O 5.d3 c5 6.e4 Nc6 7.Nbd2
d5 8.Re1 b6 9.c3 dxe4 10.dxe4 Ng4 11.Bf1 Nge5 12.Qc2 Bb7
13.Nxe5 Nxe5 14.f4 Nd7 15.Bg2 Qc7 16.Nf1 Rad8 17.Be3 c4
18.Rad1 Nc5 19.Bxc5 Qxc5+ 20.Qf2 Qxf2+ 21.Kxf2 e5 22.Ne3 b5
23.f5 Rfe8 24.h4 Bf6 25.Ke2 Be7 26.Rf1 Kg7 27.Rxd8 Rxd8 28.Nd5
Bxd5 29.exd5 Rb8 30.Be4 Rb6 31.Kd2 a5 32.b3 a4 33.bxc4 bxc4
34.Rb1 Rxb1 35.Bxb1 h5 36.fxg6 fxg6 37.Bc2 Ba3 38.Ke2 Kf6
39.Kf3 Bd6 40.Ke4 Bc7 41.Bd1 Ba5 1/2-1/2

[Event "Netherlands"]
[Site "Leiden"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Mikhail Botvinnik"]
[Black "Jan Hein Donner"]
[ECO "D37"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "66"]

1.c4 Nf6 2.Nc3 e6 3.Nf3 d5 4.d4 Be7 5.Bf4 O-O 6.e3 c5 7.dxc5
Bxc5 8.a3 Nc6 9.Be2 dxc4 10.Bxc4 Qe7 11.O-O h6 12.Bg3 Nh5
13.Bh4 g5 14.Bg3 Nxg3 15.hxg3 Bd7 16.Ne4 Rfd8 17.g4 Bb6 18.b4
Bc7 19.Qe2 Ne5 20.Nxe5 Bxe5 21.Rad1 Bc6 22.Nc5 a5 23.Bb5 axb4
24.axb4 Bd6 25.Bxc6 bxc6 26.Qc4 Bxc5 27.bxc5 Rxd1 28.Rxd1 Rd8
29.Rd4 Rd5 30.Rxd5 exd5 31.Qd4 Qe4 32.Qf6 Qe6 33.Qd4 Qe4
1/2-1/2

[Event "Netherlands"]
[Site "Leiden"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Mikhail Botvinnik"]
[ECO "E91"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "94"]

1.d4 g6 2.c4 Bg7 3.Nc3 d6 4.e4 Nf6 5.Be2 O-O 6.Nf3 Bg4 7.O-O
Nfd7 8.Be3 e6 9.Ne1 Bxe2 10.Qxe2 Nc6 11.Qd2 e5 12.d5 Nd4
13.Nc2 Nxc2 14.Qxc2 f5 15.f3 Rf7 16.b4 Bf8 17.Rac1 Be7 18.Qd2
Nb6 19.Nd1 c5 20.dxc6 bxc6 21.Nb2 d5 22.c5 d4 23.Bh6 Nd7
24.Nc4 f4 25.g3 Bg5 26.Bxg5 Qxg5 27.Kh1 Qe7 28.g4 Kg7 29.Qd3
a6 30.a4 Ra7 31.Nd6 Rf8 32.Qc4 Rfa8 33.Rb1 Rc7 34.Rfc1 Raa7
35.Qe2 Ra8 36.Nc4 Raa7 37.Kg2 Qe6 38.Qd3 Rcb7 39.Qd2 Rc7
40.Rb2 Nb8 41.h4 Qe7 42.Rh1 Qe6 43.Rc1 Qe7 44.Rh1 Qe6 45.Qd3
Nd7 46.Na5 Rc8 47.g5 h5 1/2-1/2

[Event "It, Beverwijk (Netherlands)"]
[Site "It, Beverwijk (Netherlands)"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Milko Bobotsov"]
[Black "Jan Hein Donner"]
[ECO "E88"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "90"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 e5 5. d5 Bg7 6. f3 O-O
7. Be3 c6 8. Bd3 cxd5 9. cxd5 a6 10. Nge2 Ne8 11. O-O Nd7
12. g4 b5 13. Ng3 Bf6 14. Qd2 Nc5 15. Bc2 Bd7 16. b4 Na4
17. Nxa4 bxa4 18. Bd3 Nc7 19. Rfc1 Qb8 20. Rc2 Nb5 21. Ne2 Qb7
22. Rac1 Bd8 23. Kg2 Bb6 24. Rc6 Bxc6 25. dxc6 Qa7 26. Bxb6
Qxb6 27. Bxb5 Qxb5 28. Nc3 Qxb4 29. a3 Qxa3 30. Nd5 Kg7 31. c7
Qb3 32. Rc3 Qb5 33. Qc2 Rfc8 34. Rc4 Ra7 35. Qxa4 Qxa4
36. Rxa4 a5 37. Kf2 f6 38. Ke3 Kf7 39. Kd3 Ke6 40. h4 Kd7
41. Nxf6+ Kxc7 42. Nxh7 Rh8 43. Nf6 Rxh4 44. Nd5+ Kd7 45. Nb6+
Kc6 0-1

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Efim Geller"]
[Black "Jan Hein Donner"]
[ECO "B92"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "83"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e5 7.Nb3
Be7 8.O-O Be6 9.f4 Qc7 10.Kh1 b5 11.a4 b4 12.Nd5 Bxd5 13.exd5
O-O 14.Bd2 a5 15.c3 Na6 16.cxb4 Nxb4 17.Bxb4 axb4 18.Bb5 Ne4
19.Rc1 Qa7 20.Qc2 f5 21.Nd2 exf4 22.Nxe4 fxe4 23.Qxe4 Qe3
24.Rce1 Qxe4 25.Rxe4 Bf6 26.Rxb4 Rfc8 27.b3 g5 28.g3 Be5
29.gxf4 gxf4 30.Bc6 Ra5 31.Rc4 Kg7 32.Kg2 Kf6 33.Kf3 Ra7
34.Rfc1 Rg8 35.b4 Rg6 36.Be8 Rh6 37.Rc7 Rxc7 38.Rxc7 Rxh2
39.b5 Kg5 40.Rf7 Rh3+ 41.Ke2 Re3+ 42.Kd2 1/2-1/2

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Vlastimil Hort"]
[ECO "D80"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "95"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bg5 Ne4 5.Bh4 c5 6.cxd5 Nxc3
7.bxc3 Qxd5 8.e3 cxd4 9.Qxd4 Qxd4 10.cxd4 e6 11.Rb1 Be7
12.Bb5+ Bd7 13.Bg3 Nc6 14.Nf3 a6 15.Ba4 b5 16.Bb3 Na5 17.Ne5
f6 18.Nxd7 Kxd7 19.Bc2 Rhc8 20.Bd3 Rc3 21.Ke2 Ra3 22.Rb2 Rc8
23.Rd1 Rcc3 24.Rdd2 Nc6 25.d5 exd5 26.Be4 d4 27.Bxc6+ Kxc6
28.Rxd4 Rc4 29.Rxc4+ bxc4 30.f3 Bc5 31.Bf2 a5 32.h3 Rc3 33.Kd2
Bb4 34.Rc2 Ra3 35.Ke2 Kb5 36.e4 Bc5 37.Be1 Re3+ 38.Kf1 Bb4
39.Bf2 Rd3 40.Ke2 Bc3 41.Be3 a4 42.Bc1 Be5 43.Be3 g5 44.Bd2 h5
45.Bc1 h4 46.Bd2 Rd7 47.Be1 Kc5 48.a3 0-1

[Event "Amsterdam IBM"]
[Site "Amsterdam IBM"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "12"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Vlastimil Hort"]
[ECO "D80"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "95"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bg5 Ne4 5.Bh4 c5 6.cxd5 Nxc3
7.bxc3 Qxd5 8.e3 cxd4 9.Qxd4 Qxd4 10.cxd4 e6 11.Rb1 Be7
12.Bb5+ Bd7 13.Bg3 Nc6 14.Nf3 a6 15.Ba4 b5 16.Bb3 Na5 17.Ne5
f6 18.Nxd7 Kxd7 19.Bc2 Rac8 20.Bd3 Rc3 21.Ke2 Ra3 22.Rb2 Rc8
23.Rd1 Rcc3 24.Rdd2 Nc6 25.d5 exd5 26.Be4 d4 27.Bxc6+ Kxc6
28.Rxd4 Rc4 29.Rxc4+ bxc4 30.f3 Bc5 31.Bf2 a5 32.h3 Rc3 33.Kd2
Bb4 34.Rc2 Ra3 35.Ke2 Kb5 36.e4 Bc5 37.Be1 Re3+ 38.Kf1 Bb4
39.Bf2 Rd3 40.Ke2 Bc3 41.Be3 a4 42.Bc1 Be5 43.Be3 g5 44.Bd2 h5
45.Bc1 h4 46.Bd2 Rd7 47.Be1 Kc5 48.a3 0-1

[Event "Wijk aan Zee"]
[Site "Wijk aan Zee"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "3"]
[Result "1-0"]
[White "Vlastimil Hort"]
[Black "Jan Hein Donner"]
[ECO "D37"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "57"]

1.c4 Nf6 2.Nc3 e6 3.Nf3 d5 4.d4 Be7 5.Bg5 O-O 6.Rc1 h6 7.Bh4
Ne4 8.Bxe7 Qxe7 9.e3 c6 10.Qc2 Nxc3 11.Qxc3 dxc4 12.Bxc4 b6
13.O-O Bb7 14.e4 c5 15.d5 exd5 16.exd5 Nd7 17.Rfe1 Qd6 18.Nh4
Qf6 19.Qxf6 Nxf6 20.d6 Bd5 21.Bxd5 Nxd5 22.Rcd1 Nf6 23.Re7
Rfe8 24.Nf5 Rxe7 25.dxe7 Re8 26.Re1 Rb8 27.g4 Kh7 28.h4 g6
29.g5 1-0

[Event "Wijk aan Zee"]
[Site "06"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Borislav Ivkov"]
[ECO "E67"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "34"]

1.d4 g6 2.c4 Bg7 3.g3 Nf6 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nbd7 7.O-O
e5 8.e4 c6 9.Rb1 exd4 10.Nxd4 Re8 11.h3 Nc5 12.Re1 a5 13.Bf4
Nh5 14.Be3 Nf6 15.Qc2 Qe7 16.Rbd1 Bd7 17.f3 Rad8 1/2-1/2

[Event "Beverwijk (Netherlands)"]
[Site "It"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Igor V Platonov"]
[ECO "E55"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "45"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 c5 6.Nf3 d5 7.O-O
dxc4 8.Bxc4 Nbd7 9.Qe2 a6 10.a3 Ba5 11.a4 Qe7 12.Bd2 b6 13.e4
cxd4 14.Nxd4 Ne5 15.Ba2 Bb7 16.f3 Rac8 17.Rfc1 Bb4 18.Be3 Rfd8
19.Rab1 Rd7 20.Nc2 Bc5 21.Rd1 Rcd8 22.Rxd7 Rxd7 23.Rd1 1/2-1/2

[Event "Amsterdam (0.10)"]
[Site "Amsterdam (0.10)"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "9"]
[Result "1-0"]
[White "Lev Polugaevsky"]
[Black "Jan Hein Donner"]
[ECO "E73"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "97"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. Be2 O-O 6. Bg5 h6
7. Be3 e5 8. d5 Nbd7 9. h4 Nc5 10. Qc2 h5 11. f3 c6 12. b4 Na6
13. a3 cxd5 14. cxd5 Bd7 15. Nh3 Qb8 16. Nf2 b5 17. Nd3 Nc7
18. O-O Qb7 19. Nc1 Rac8 20. Qd2 Na8 21. Nb3 Nb6 22. Na5 Qb8
23. Rfc1 Rc7 24. Rc2 Rfc8 25. Rac1 a6 26. Bf1 Ne8 27. Qf2 Na8
28. Qd2 Nb6 29. Qf2 Na8 30. g3 Bf8 31. Kh2 Ng7 32. Bh3 f5
33. Nc6 Qb7 34. Na5 Qb8 35. Nc6 Qb7 36. Na7 Re8 37. Nd1 Rxc2
38. Rxc2 Be7 39. Nc6 Bf6 40. Na5 Qb8 41. Ba7 Qb7 42. Nc6 Bxc6
43. dxc6 f4 44. Nc3 Kh7 45. Nd5 fxg3+ 46. Qxg3 Bxh4 47. Qg2
Bg5 48. c7 Nxc7 49. Rxc7 1-0

[Event "Leiden"]
[Site "Leiden"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Boris Spassky"]
[ECO "E41"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "62"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 b6 6. Ne2 Bb7
7. O-O d5 8. cxd5 exd5 9. a3 Bxc3 10. Nxc3 O-O 11. dxc5 bxc5
12. b4 Nbd7 13. Bb2 Qe7 14. bxc5 Nxc5 15. Bc2 Ba6 16. Re1 Rab8
17. Rb1 Rfd8 18. Ne2 Nfe4 19. f3 Bxe2 20. Qxe2 Nd6 21. Bd4
Rbc8 22. Rbc1 Nc4 23. a4 Qg5 24. Qf2 a5 25. h4 Qh6 26. Red1
Ne6 27. Bf5 Rb8 28. Bxe6 fxe6 29. e4 Qf4 30. exd5 exd5 31. Rb1
Rb4 1/2-1/2

[Event "Leiden"]
[Site "Leiden"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Boris Spassky"]
[Black "Jan Hein Donner"]
[ECO "B99"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "136"]

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 gxf6
12. f5 Ne5 13. Qh3 O-O 14. Nce2 Kh8 15. Nf4 Rg8 16. fxe6 fxe6
17. Nfxe6 Bxe6 18. Nxe6 Qd7 19. Nd4 Qxg4 20. Qxg4 Nxg4 21. Nf5
Nf2 22. Nxe7 Rge8 23. Nd5 Nxh1 24. Nc7 Nf2 25. Rd4 Rac8
26. Nxe8 Rxe8 27. Bg2 Rg8 28. Bf3 Ng4 29. Rxd6 Nxh2 30. Be2
Rg2 31. Kd1 Ng4 32. Bxg4 Rxg4 33. Rxf6 Rxe4 34. Rxa6 Kg7
35. Ra5 b4 36. Kd2 Kg6 37. Kd3 Rg4 38. Re5 h5 39. Ke3 Rg2
40. Re4 b3 41. cxb3 Rxb2 42. Ra4 Kg5 43. Kf3 Kf5 44. Ra5+ Kg6
45. Ra8 Kf5 46. Rf8+ Kg5 47. Rg8+ Kf5 48. Rg2 Rb1 49. Rc2 Kg5
50. Rc5+ Kh4 51. Rb5 Rf1+ 52. Kg2 Ra1 53. a4 Kg4 54. Rb4+ Kg5
55. Kf3 Rf1+ 56. Kg3 Rg1+ 57. Kf2 Ra1 58. Kf3 Rf1+ 59. Kg2 Ra1
60. Rb8 h4 61. Kh2 Kg4 62. Rg8+ Kf4 63. Kg2 Ra3 64. Rb8 Ra1
65. Rb4+ Kg5 66. Kh2 Kh5 67. Kh3 Rh1+ 68. Kg2 Ra1 1/2-1/2

[Event "Leiden"]
[Site "Leiden"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Boris Spassky"]
[ECO "A61"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "48"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6
7. Nd2 Bg7 8. Nc4 O-O 9. Bf4 Ne8 10. Qd2 b6 11. e3 Ba6 12. a4
Bxc4 13. Bxc4 Nd7 14. O-O Ne5 15. Be2 f5 16. e4 a6 17. exf5
gxf5 18. Bg3 Qd7 19. f4 Ng6 20. Rab1 Ra7 21. b4 Bxc3 22. Qxc3
Qxa4 23. bxc5 bxc5 24. Ra1 Qd7 1/2-1/2

[Event "Leiden"]
[Site "Leiden"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Boris Spassky"]
[Black "Jan Hein Donner"]
[ECO "C11"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "52"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 dxe4 5. Nxe4 Be7 6. Bxf6
Bxf6 7. Nf3 Bd7 8. Qd2 Bc6 9. Nxf6+ Qxf6 10. Ne5 O-O 11. O-O-O
Rd8 12. Qe3 Be8 13. g3 Nd7 14. Bg2 c6 15. f4 Qe7 16. h4 f6
17. Nf3 Bh5 18. Bh3 Bxf3 19. Qxf3 Nf8 20. Rhe1 Qf7 21. Bf1 Rd6
22. Bc4 Rad8 23. f5 Rxd4 24. fxe6 Rxd1+ 25. Rxd1 Rxd1+
26. Qxd1 Qe7 1-0

[Event "Amsterdam IBM"]
[Site "Amsterdam IBM"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "8"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Boris Spassky"]
[ECO "D26"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "76"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. Nc3 a6
7. dxc5 Qxd1+ 8. Kxd1 Bxc5 9. Bd3 Nbd7 10. Bd2 b6 11. Ne4 Bb7
12. Nxc5 Nxc5 13. Ke2 Nxd3 14. Kxd3 Ne4 15. Ke2 a5 16. b4 Nxd2
17. Kxd2 axb4 18. Rhb1 Ra4 19. Ne1 Ke7 20. Rb2 Rha8 21. Nc2 b3
22. Rxb3 Rxa2 23. Rxa2 Rxa2 24. f3 Bc6 25. Ra3 Rxa3 26. Nxa3
Kd6 27. Kc3 Kc5 28. Nc2 Ba4 29. Nb4 Bb5 30. Nc2 Bf1 31. g3 Be2
32. f4 Kd5 33. Nd4 Bg4 34. Kd3 Bf5+ 35. Kc3 Ke4 36. Kd2 Bg4
37. Nb5 Kf3 38. Nd6 Kg2 0-1

[Event "Amsterdam (Netherlands)"]
[Site "It"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Leonid Stein"]
[Black "Jan Hein Donner"]
[ECO "E62"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "77"]

1.c4 Nf6 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O 5.d4 d6 6.Nf3 Nc6 7.O-O
e5 8.d5 Ne7 9.e4 Ne8 10.b4 f5 11.exf5 Nxf5 12.Ng5 a6 13.Rb1
Nd4 14.Ne2 Bg4 15.f3 Nxe2+ 16.Qxe2 Bf5 17.Rb3 h6 18.Ne6 Bxe6
19.dxe6 c6 20.f4 Nc7 21.fxe5 Rxf1+ 22.Bxf1 Nxe6 23.Qd3 dxe5
24.Qxg6 Nf8 25.Qc2 Ne6 26.Bxh6 Qf6 27.Bxg7 Kxg7 28.Qf2 Nd4
29.Re3 Qe7 30.Re4 Qf6 31.Qe3 Rd8 32.Bd3 Nf3+ 33.Kg2 Ne1+
34.Qxe1 Rxd3 35.Rxe5 Rd2+ 36.Qxd2 Qxe5 37.Kf3 Qf5+ 38.Ke3 Qb1
39.Kd4 1-0

[Event "Lugano"]
[Site "12"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Laszlo Szabo"]
[ECO "E41"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "74"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 Nc6 6.Nf3 Bxc3+
7.bxc3 d6 8.e4 e5 9.d5 Ne7 10.Nh4 O-O 11.O-O Ng6 12.Nf5 Nf4
13.Bc2 g6 14.Nh6+ Kg7 15.g3 N6h5 16.gxf4 Nxf4 17.Bxf4 exf4
18.Nf5+ gxf5 19.exf5 Kh8 20.Kh1 Qf6 21.Qf3 Bd7 22.Qxf4 Qxc3
23.Be4 Qf6 24.Rab1 b6 25.Rb3 Rg8 26.Rg3 Rae8 27.f3 Rg7 28.Rh3
Reg8 29.Rg3 a6 30.Rfg1 b5 31.cxb5 axb5 32.a3 h6 33.Qd2 c4
34.Qe3 Rg5 35.Qf4 R5g7 36.Qe3 Rg5 37.Qf4 R5g7 1/2-1/2

[Event "Lugano"]
[Site "5"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Laszlo Szabo"]
[Black "Jan Hein Donner"]
[ECO "D37"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "66"]

1.c4 Nf6 2.Nc3 e6 3.Nf3 d5 4.d4 Be7 5.g3 O-O 6.Bg2 c6 7.O-O b6
8.Ne5 Bb7 9.e4 Nbd7 10.exd5 exd5 11.cxd5 Nxe5 12.dxe5 Nxd5
13.Nxd5 cxd5 14.Be3 Qd7 15.Bd4 Bc5 16.Qd2 Rac8 17.Rfd1 Rfd8
18.Rac1 h6 19.Bxc5 bxc5 20.Qa5 Qe7 21.Qxa7 Rc7 22.Qb6 d4
23.Bxb7 Rxb7 24.Qxc5 Qxc5 25.Rxc5 Rxb2 26.a4 d3 27.h4 Ra2
28.a5 g6 29.Kg2 h5 30.Kf3 Kf8 31.Rb5 Ke7 32.Re1 Rd7 33.Ke3 Ke6
1/2-1/2

[Event "Wijk aan Zee"]
[Site "Wijk aan Zee"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "12"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Mark Taimanov"]
[ECO "D97"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "39"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Qb3 dxc4 6.Qxc4 c6 7.e4
O-O 8.Be2 b5 9.Qd3 b4 10.Na4 Ba6 11.Qc2 Bxe2 12.Qxe2 Qa5
13.Nc5 Nfd7 14.Nb3 Qa6 15.a3 Qxe2+ 16.Kxe2 Na6 17.Bd2 Rfb8
18.Rhc1 bxa3 19.Rxa3 c5 20.Bc3 1/2-1/2

[Event "Leiden (Netherlands)"]
[Site "Leiden (Netherlands)"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Bent Larsen"]
[ECO "A43"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "45"]

1.d4 c5 2.d5 d6 3.e4 Nf6 4.Bd3 g6 5.Ne2 Bg7 6.O-O O-O 7.c4 e6
8.Nec3 exd5 9.cxd5 Nbd7 10.Nd2 a6 11.a4 Nh5 12.f4 Bd4+ 13.Kh1
Ndf6 14.Nf3 Re8 15.f5 gxf5 16.exf5 Kh8 17.Nxd4 cxd4 18.Ne4
Nxe4 19.Qxh5 Qf6 20.Bh6 Bd7 21.Rf4 Nc5 22.Bg5 Qe5 23.Qh6 1-0

[Event "Leiden (Netherlands)"]
[Site "Leiden (Netherlands)"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Bent Larsen"]
[ECO "A95"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "85"]

1.d4 f5 2.g3 Nf6 3.Bg2 e6 4.Nf3 Be7 5.O-O O-O 6.c4 c6 7.Nc3 d5
8.Bg5 Nbd7 9.Qd3 Ne4 10.Bxe7 Qxe7 11.Qe3 b6 12.Nxe4 fxe4
13.Nd2 Ba6 14.cxd5 cxd5 15.f3 exf3 16.Nxf3 Nf6 17.Ne5 Qb4
18.b3 Rac8 19.Rac1 Rxc1 20.Rxc1 Rc8 21.Rxc8+ Bxc8 22.Bf3 a5
23.Kg2 Bb7 24.Qf4 Qd6 25.g4 Qc7 26.h4 Ne8 27.g5 Qe7 28.Bg4 Bc8
29.Nd3 Qd6 30.Kf3 Bd7 31.Ne5 Qe7 32.Qc1 Qd6 33.Qf4 Qe7 34.Qc1
Qd6 35.Kg3 Nc7 36.Qf4 Be8 37.h5 Nb5 38.h6 Qe7 39.Nd3 Nd6
40.Qe5 Ne4+ 41.Kf4 Bd7 42.hxg7 Bc8 43.Bf3 1/2-1/2

[Event "Leiden (Netherlands)"]
[Site "Leiden (Netherlands)"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Bent Larsen"]
[Black "Jan Hein Donner"]
[ECO "A00"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "94"]

1.g3 g6 2.Bg2 Bg7 3.c4 Nf6 4.Nc3 O-O 5.d4 c5 6.d5 d6 7.Nf3 Na6
8.O-O Nc7 9.Re1 Rb8 10.a4 a6 11.a5 b5 12.axb6 Rxb6 13.Ra2 e6
14.dxe6 Nxe6 15.b3 Bd7 16.Na4 Bxa4 17.Rxa4 d5 18.Qc2 Qb8
19.Ra3 Qb7 20.Rd1 Rb8 21.cxd5 Nxd5 22.Ng5 Nb4 23.Qc4 Qe7
24.Nxe6 Qxe6 25.Bf4 Be5 26.Ra5 Bxf4 27.gxf4 Rb5 28.Rxb5 axb5
29.Qxc5 Qxe2 30.Qd6 Rb6 31.Qd8+ Kg7 32.Rd2 Qe1+ 33.Bf1 Rf6
34.Qd4 Nc6 35.Qb2 b4 36.h3 Qe6 37.Bg2 Ne7 38.Qe5 Qxe5 39.fxe5
Rf5 40.Rd4 g5 41.Rxb4 Rxe5 42.f4 gxf4 43.Rxf4 Re1+ 44.Rf1
Rxf1+ 45.Kxf1 Kf6 46.Kf2 Ke5 47.Kg3 Nf5+ 1/2-1/2

[Event "Leiden (Netherlands)"]
[Site "Leiden (Netherlands)"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Bent Larsen"]
[Black "Jan Hein Donner"]
[ECO "C90"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "148"]

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.a3 h6 10.d4 Re8 11.Nbd2 Bf8 12.Ba2 Bd7 13.Qb3
Qe7 14.Qc2 g6 15.b4 Kh7 16.Bb2 Bg7 17.d5 Nd8 18.c4 bxc4
19.Nxc4 Nb7 20.Rac1 Rec8 21.Bb3 a5 22.Bc3 a4 23.Ba2 Bb5 24.Ne3
c6 25.dxc6 Bxc6 26.Nd2 Nd8 27.Qd3 Ne6 28.g3 Rab8 29.h4 Nd4
30.Bxd4 exd4 31.Nd5 Qd7 32.Qf3 Bxd5 33.exd5 Ng4 34.Nc4 Kg8
35.h5 gxh5 36.Bb1 Re8 37.Bf5 Rxe1+ 38.Rxe1 Qc7 39.Bd3 Qd7
40.Qf4 Rd8 41.Kg2 Ne5 42.Nb2 Qc7 43.Rc1 Qb7 44.Qe4 Rc8 45.Nc4
Nxc4 46.Rxc4 Rxc4 47.Qe8+ Bf8 48.Bxc4 Qe7 49.Qxa4 Qe4+ 50.f3
Qe3 51.Qb3 Qd2+ 52.Kf1 Qc1+ 53.Kf2 h4 54.gxh4 Be7 55.Ke2 Bxh4
56.a4 Be1 57.Kd3 Qe3+ 58.Kc2 Qd2+ 59.Kb1 Qxb4 60.Qxb4 Bxb4
61.Kc2 Kg7 62.Kd3 Bc3 63.Ke4 Kg6 64.f4 f5 65.Kf3 Kf6 66.Bf1
Bd2 67.Bh3 h5 68.Bf1 h4 69.Bd3 h3 70.Kf2 Be3+ 71.Kf1 Ke7 72.a5
Kd8 73.Bxf5 h2 74.Kg2 Bxf4 1/2-1/2

[Event "Lugano"]
[Site "Lugano"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "01"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Fridrik Olafsson"]
[ECO "E94"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "82"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Nf3 e5
7. O-O Nbd7 8. Be3 Qe7 9. d5 Nh5 10. g3 f5 11. exf5 gxf5
12. Ng5 f4 13. Ne6 Nhf6 14. gxf4 exf4 15. Nxf8 fxe3 16. Ne6
Nc5 17. fxe3 Nxe6 18. dxe6 Bxe6 19. Kh1 c6 20. Qd2 Rd8
21. Rad1 Ng4 22. Bxg4 Bxg4 23. Rde1 Kh8 24. Rf4 Be6 25. Ref1
Be5 26. Re4 Rg8 27. Qf2 Bxc3 28. bxc3 Bd5 29. cxd5 Qxe4+
30. Qf3 cxd5 31. Qxe4 dxe4 32. Rf6 Rd8 33. c4 d5 34. cxd5 Rxd5
35. Re6 Rd1+ 36. Kg2 Rd2+ 37. Kg3 Rb2 38. Rxe4 b5 39. Re8+ Kg7
40. Re7+ Kg6 41. Rxa7 Re2 1/2-1/2

[Event "Lugano"]
[Site "Lugano"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "02"]
[Result "1-0"]
[White "Robert Eugene Byrne"]
[Black "Jan Hein Donner"]
[ECO "B90"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "79"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. h3 e5
7. Nde2 Be6 8. g4 Be7 9. Bg2 Nbd7 10. Ng3 O-O 11. Nf5 Nb6
12. O-O Ne8 13. Nxe7+ Qxe7 14. b3 Rc8 15. Ne2 Nd7 16. Ng3 Nc5
17. c4 b5 18. cxb5 axb5 19. Be3 Qb7 20. Rc1 f6 21. Nf5 Rf7
22. Nxd6 Nxd6 23. Rxc5 Rxc5 24. Bxc5 Rd7 25. Qe2 Nf7 26. Rd1
Rxd1+ 27. Qxd1 h5 28. f3 Qc6 29. Be3 hxg4 30. hxg4 Kh7 31. Bf1
Ng5 32. Kf2 Kg6 33. Qc1 Qa8 34. Qd2 Qh8 35. Bxg5 fxg5 36. Bxb5
Qh2+ 37. Ke3 Qg1+ 38. Qf2 Qd1 39. Bd3 Kf7 40. Qf1 1-0

[Event "Lugano"]
[Site "Lugano"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "03"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Svetozar Gligoric"]
[ECO "E75"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "35"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 c5
7. d5 e6 8. Qd2 exd5 9. exd5 Re8 10. Nf3 Bg4 11. O-O a6 12. h3
Bxf3 13. Bxf3 Nbd7 14. Qc2 Qe7 15. Rae1 Qf8 16. Qc1 Rxe1
17. Rxe1 Re8 18. Rxe8 1/2-1/2

[Event "Lugano"]
[Site "Lugano"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "04"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Wolfgang Unzicker"]
[ECO "E59"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "126"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5
7. O-O Nc6 8. a3 Bxc3 9. bxc3 dxc4 10. Bxc4 Qc7 11. Bd3 e5
12. Qc2 Re8 13. dxe5 Nxe5 14. Nxe5 Qxe5 15. f3 Be6 16. Re1
Rad8 17. Bf1 Nd5 18. Bd2 Nb6 19. Rad1 Bc4 20. e4 Qe6 21. Bxc4
Qxc4 22. Bc1 Na4 23. Re3 b5 24. Red3 Rxd3 25. Rxd3 f5 26. Qd2
fxe4 27. Rd8 Qe6 28. Rxe8+ Qxe8 29. fxe4 Qxe4 30. Qd8+ Kf7
31. Qd7+ Qe7 32. Qxb5 Qe1+ 33. Qf1+ Qxf1+ 34. Kxf1 Nxc3
35. Bb2 Na4 36. Be5 g6 37. Ke2 Ke6 38. Bb8 a6 39. Kd3 Kd5
40. Bf4 Nb6 41. Bc1 Nc4 42. Kc3 a5 43. Kd3 a4 44. h3 h5
45. Kc3 Nd6 46. Kd3 Nb5 47. g4 hxg4 48. hxg4 Nd6 49. Ke3 Ne4
50. Bb2 Ng5 51. Bc1 Ne6 52. Kd3 Nd4 53. Be3 Nf3 54. g5 Ne5+
55. Kc3 Nc4 56. Bc1 Nd6 57. Kd3 Nb5 58. Bb2 Nd4 59. Kc3 Nb5+
60. Kd3 c4+ 61. Kc2 Kc5 62. Kd2 c3+ 63. Bxc3 Kc4 0-1

[Event "Lugano"]
[Site "Lugano"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "06"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Lubomir Kavalek"]
[ECO "E67"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nbd7
7. O-O e5 8. e4 c6 9. Rb1 exd4 10. Nxd4 Re8 11. h3 Nc5 12. Re1
a5 13. Bf4 Nh5 14. Be3 Qc7 15. Qd2 Nf6 16. Qc2 Bd7 17. Rbd1
Rad8 18. Nb3 Be6 19. Nxc5 dxc5 20. Bxc5 Bxc4 21. Na4 b5
22. Bb6 Rxd1 23. Rxd1 Qe7 24. b3 Be6 25. Nc5 Ra8 26. Nxe6 Qxe6
27. Bc5 Bf8 28. Bxf8 Rxf8 29. Qd3 Re8 30. e5 Qxe5 31. Bxc6 Rb8
32. Qd6 Qxd6 33. Rxd6 Kg7 34. Bf3 b4 35. Be2 Rc8 36. Bc4 Rc5
37. g4 h5 38. f3 hxg4 39. hxg4 g5 40. Kf2 Re5 41. Kg3 1/2-1/2

[Event "Lugano"]
[Site "Lugano"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "07"]
[Result "1/2-1/2"]
[White "Bent Larsen"]
[Black "Jan Hein Donner"]
[ECO "B31"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "108"]

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Re1 Nf6 6. e5 Nd5
7. Nc3 Nc7 8. Bxc6 dxc6 9. h3 O-O 10. d3 Ne6 11. Ne4 b6 12. a4
a5 13. Bd2 Nd4 14. Nxd4 cxd4 15. Bf4 Qd5 16. Nd2 Be6 17. Qf3
Qxf3 18. Nxf3 Rfd8 19. b3 h6 20. h4 c5 21. Nd2 Rac8 22. f3 Rc6
23. Re2 f5 24. exf6 exf6 25. Rae1 Kf7 26. Nc4 Bf8 27. g4 g5
28. Bg3 gxh4 29. Bxh4 Re8 30. Kf2 Bd7 31. Rxe8 Bxe8 32. f4 Bd7
33. f5 h5 34. g5 Bxf5 35. gxf6 Bd6 36. Nxd6+ Rxd6 37. Re7+ Kg8
38. Kg3 Rd7 39. Re8+ Kf7 40. Rh8 Bg4 41. Kf4 Kg6 42. Rg8+ Kf7
43. Rb8 Bd1 44. Rh8 Ke6 45. Rb8 Bxc2 46. Ke4 Kf7 47. Rxb6 Rc7
48. Rb8 Rd7 49. Rb5 Rc7 50. Bg3 Ra7 51. Bb8 Rd7 52. Be5 h4
53. Rxc5 Bxb3 54. Bxd4 Kg6 1/2-1/2

[Event "Lugano"]
[Site "Lugano"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "08"]
[Result "1-0"]
[White "Fridrik Olafsson"]
[Black "Jan Hein Donner"]
[ECO "A09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "61"]

1. Nf3 d5 2. c4 c6 3. e3 Nf6 4. Nc3 e6 5. b3 Nbd7 6. Bb2 Bd6
7. Be2 O-O 8. O-O Qe7 9. Qc2 dxc4 10. Bxc4 e5 11. Ng5 Ba3
12. Bxa3 Qxa3 13. f4 exf4 14. Rxf4 h6 15. Nf3 Qe7 16. Rf1 Re8
17. Nd4 Nf8 18. Bd3 Be6 19. Rxf6 gxf6 20. Ne4 Nd7 21. Qd1 f5
22. Nxf5 Bxf5 23. Rxf5 Qe6 24. Qf3 Ne5 25. Qg3+ Kf8 26. Nf6
Nxd3 27. Nh7+ Ke7 28. Qc7+ Qd7 29. Rxf7+ Kxf7 30. Qxd7+ Re7
31. Qf5+ 1-0

[Event "Lugano"]
[Site "Lugano"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "09"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Robert Eugene Byrne"]
[ECO "A10"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "80"]

1. c4 g6 2. g3 Bg7 3. Bg2 Nf6 4. d4 O-O 5. e4 d6 6. Ne2 c5
7. O-O Nc6 8. d5 Na5 9. Nd2 a6 10. Rb1 e6 11. b3 b5 12. Qc2
bxc4 13. bxc4 exd5 14. cxd5 Re8 15. Nc3 Bd7 16. h3 Qc7 17. Bb2
Rab8 18. Ba3 Bb5 19. Rfe1 Nd7 20. Nxb5 axb5 21. Bf1 c4 22. Bb4
Nc5 23. Bc3 Na4 24. Bxg7 Kxg7 25. Nf3 Qc5 26. Qd2 b4 27. Qf4
Nc3 28. Rb2 Rb7 29. Rc2 Rbe7 30. a3 Nxd5 31. exd5 Rxe1
32. Nxe1 Rxe1 33. axb4 Qxb4 34. Qd4+ Kg8 35. Re2 Rxe2 36. Bxe2
Qe1+ 37. Bf1 c3 38. Qb4 Qa1 39. Qg4 Nb3 40. Kg2 Nc5 0-1

[Event "Lugano"]
[Site "Lugano"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "10"]
[Result "1-0"]
[White "Svetozar Gligoric"]
[Black "Jan Hein Donner"]
[ECO "E92"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "91"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5
7. d5 Nh5 8. g3 Nd7 9. Bg5 Bf6 10. Be3 Be7 11. Bh6 Ng7 12. h4
Nf6 13. Nd2 Kh8 14. h5 gxh5 15. Bxg7+ Kxg7 16. Bxh5 Rh8
17. Qe2 Bd7 18. O-O-O Qc8 19. Nf1 Nxh5 20. Qxh5 Bg4 21. Qh6+
Kg8 22. Ne3 Bxd1 23. Kxd1 Qf8 24. Qh5 Qg7 25. Nf5 Qf6 26. Qg4+
Kf8 27. Rh6 Qg5 28. Qh3 Qg8 29. c5 dxc5 30. d6 Bxd6 31. Nd5
Qg5 32. Nf6 Rd8 33. Nxh7+ Rxh7 34. Rxh7 Ke8 35. Ke2 Bf8
36. Ne3 Qg6 37. Kf3 c6 38. Rh8 Qe6 39. Qh5 Kd7 40. Rh7 Be7
41. Rxf7 Rf8 42. Rxf8 Bxf8 43. g4 Qf6+ 44. Qf5+ Ke7 45. g5 Qe6
46. Qh7+ 1-0

[Event "Lugano"]
[Site "Lugano"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "11"]
[Result "1/2-1/2"]
[White "Wolfgang Unzicker"]
[Black "Jan Hein Donner"]
[ECO "D79"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "42"]

1. d4 Nf6 2. c4 g6 3. g3 c6 4. Bg2 d5 5. cxd5 cxd5 6. Nf3 Bg7
7. O-O O-O 8. Nc3 Ne4 9. Ne5 Nxc3 10. bxc3 Nc6 11. Nxc6 bxc6
12. Qa4 Bd7 13. Ba3 Re8 14. Bc5 Qc7 15. Qa3 Bf8 16. e4 dxe4
17. Bxe4 e5 18. Bxf8 Rxf8 19. dxe5 Qxe5 20. Bg2 Qc7 21. Rad1
Rac8 1/2-1/2

[Event "Lugano"]
[Site "Lugano"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "13"]
[Result "1/2-1/2"]
[White "Lubomir Kavalek"]
[Black "Jan Hein Donner"]
[ECO "C14"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "69"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. Bg5 Be7 5. e5 Nfd7 6. Bxe7
Qxe7 7. f4 O-O 8. Nf3 c5 9. dxc5 Nc6 10. Bd3 f5 11. exf6 Qxf6
12. g3 Nxc5 13. O-O Bd7 14. Qd2 Be8 15. Rae1 Nxd3 16. cxd3 Bg6
17. Ne5 Nxe5 18. Rxe5 Bf5 19. Nb5 Qd8 20. Nd4 Qb6 21. Qf2 Bxd3
22. Rd1 Be4 23. Nxe6 Rfc8 24. Qxb6 axb6 25. Rd2 h6 26. a3 Rc1+
27. Kf2 Rac8 28. Nd4 Rh1 29. Ke3 Rcc1 30. Re6 Rce1+ 31. Re2
Rd1 32. Rd2 Rxd2 33. Kxd2 Rxh2+ 34. Ke3 Rxb2 35. f5 1/2-1/2

[Event "Lugano"]
[Site "Lugano"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "14"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Bent Larsen"]
[ECO "E54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "34"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5
7. O-O dxc4 8. Bxc4 Nc6 9. Bd3 cxd4 10. exd4 Be7 11. Be3 b6
12. a3 Bb7 13. Qe2 Rc8 14. Rac1 Nd5 15. Be4 Nf6 16. Bd3 Nd5
17. Be4 Nf6 1/2-1/2

[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "14"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Miroslav Filip"]
[ECO "E45"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "97"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Nge2 Ba6 6.a3 Bxc3+
7.Nxc3 d5 8.b3 Nc6 9.a4 O-O 10.Be2 dxc4 11.bxc4 e5 12.d5 Na5
13.Ba3 Re8 14.Nb5 Qd7 15.O-O c6 16.dxc6 Qxc6 17.Qc2 Bxb5
18.axb5 Qe6 19.Bb4 Nb7 20.Ra6 Rec8 21.Rfa1 Nd6 22.Rxa7 Rxa7
23.Rxa7 g6 24.Qa2 Nxc4 25.Bxc4 Qxc4 26.Qxc4 Rxc4 27.Ra8+ Kg7
28.Bf8+ Kh8 29.h3 Rc1+ 30.Kh2 Rb1 31.Bd6+ Kg7 32.Bxe5 Rxb5
33.f4 Rxe5 34.fxe5 Nd5 35.Ra3 b5 36.Rd3 Nb6 37.Kg3 Kf8 38.Rb3
Ke7 39.Rxb5 Nd7 40.Kf4 Nf8 41.Rb7+ Ke6 42.g4 h6 43.h4 Nd7
44.Rb5 Nf8 45.Ke4 Nd7 46.Ra5 Ke7 47.Ra7 Ke6 48.Ra6+ Ke7 49.Kd5
1-0

[Event "IBM"]
[Site "Amsterdam"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "6"]
[Result "1/2-1/2"]
[White "Georgi P Tringov"]
[Black "Jan Hein Donner"]
[ECO "B99"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "82"]

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.f6 gxf6 15.gxf6 Bf8 16.Qh5 Bd7 17.Bh3 b4 18.Nce2
O-O-O 19.Qxf7 Bh6+ 20.Kb1 Rdf8 21.Qe7 Re8 22.Qf7 Ref8 23.Qh5
Rxf6 24.Rhf1 Rhf8 25.Rxf6 Rxf6 26.Qh4 Rg6 27.Nb3 Bg5 28.Qxh7
Rh6 29.Qg7 Nxe4 30.Ng3 Rxh3 31.Nxe4 Rxh2 32.Nd4 Bd8 33.Qg3 Rh5
34.Nxd6+ Kb8 35.Nb3 Be7 36.Qg8+ Ka7 37.Nc4 Bb5 38.Qg1+ Kb8
39.Qg8+ Ka7 40.Qg1+ Kb8 41.Qg8+ Ka7 1/2-1/2

[Event "IBM"]
[Site "Amsterdam"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "15"]
[Result "1/2-1/2"]
[White "Svetozar Gligoric"]
[Black "Jan Hein Donner"]
[ECO "D56"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "31"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bg5 O-O 6.e3 h6 7.Bh4
Ne4 8.Bxe7 Qxe7 9.Rc1 c6 10.Bd3 Nxc3 11.Rxc3 dxc4 12.Bxc4 b6
13.O-O Bb7 14.Qe2 Nd7 15.Ba6 Bxa6 16.Qxa6 1/2-1/2

[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "4"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "F Kuijpers"]
[ECO "A42"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "192"]

1.c4 c6 2.e4 e5 3.Nf3 d6 4.d4 Nd7 5.Be2 Ngf6 6.Nc3 g6 7.O-O
Bg7 8.d5 c5 9.Ne1 O-O 10.Bg5 h6 11.Bh4 a6 12.a3 Qc7 13.b4 b5
14.Qb3 cxb4 15.axb4 bxc4 16.Bxc4 Bb7 17.Bd3 Rfc8 18.Na4 Nxd5
19.exd5 e4 20.Rb1 exd3 21.Nxd3 Qc4 22.Qxc4 Rxc4 23.Bg3 Bxd5
24.Bxd6 a5 25.Ndc5 Nxc5 26.Bxc5 axb4 27.Nb6 Rxc5 28.Nxa8 Bxa8
29.Rxb4 Bd5 30.h3 Rc2 31.Rd1 Be6 32.Rb8+ Kh7 33.Rbd8 Bc3
34.R8d6 Bb4 35.R6d4 Ba5 36.Rd6 Kg7 37.R6d3 Rb2 38.Rd6 h5
39.R6d4 Bb3 40.Rf1 Bc3 41.Rd8 Ba4 42.Rd5 Bc2 43.Rc1 Be4 44.Rd7
Ba5 45.Rcd1 Bc6 46.R7d6 Bb5 47.Rc1 Be2 48.Rdc6 Bd3 49.Rd6 Bb5
50.f3 Bd2 51.Ra1 Bf4 52.Rdd1 Bc6 53.Kh1 g5 54.Rab1 Rc2 55.Rb4
f6 56.Rxf4 gxf4 57.Kg1 Kg6 58.Rd8 Rc1+ 59.Kh2 Re1 60.Rg8+ Kf5
61.Rd8 Re8 62.Rd6 Re6 63.Rd2 Ke5 64.Rd8 Re7 65.Kg1 Re8 66.Rd2
Ra8 67.Rd1 Bd5 68.Kf2 Ra3 69.Kg1 Ra2 70.Re1+ Kd4 71.Rd1+ Kc4
72.Re1 Kd3 73.Rd1+ Rd2 74.Re1 Kc2 75.Re8 Rd1+ 76.Kh2 Kd2
77.Re7 Kd3 78.Re8 Kd2 79.Re7 Re1 80.Rd7 Re5 81.Kg1 Ke3 82.Rc7
Re8 83.Rc3+ Kd2 84.Rc5 Re5 85.Ra5 Bc4 86.Ra4 Kd3 87.Ra1 Ke3
88.Ra7 Bd3 89.Rf7 Re6 90.Rc7 Kd2 91.Kh2 Re1 92.Rc6 Ke3 93.Rc3
Rd1 94.Ra3 Kf2 95.Ra2+ Be2 96.Rb2 Rd8 0-1

[Event "Hoogevens"]
[Site "Wijk aan Zee"]
[Date "1970.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Heikki M J Westerinen"]
[ECO "E62"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "52"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nc6 7.O-O
Bg4 8.d5 Na5 9.Nd2 c5 10.Qc2 a6 11.h3 Bd7 12.b3 e5 13.Bb2 Nh5
14.e4 b5 15.Ne2 Rb8 16.Bc3 f5 17.f4 exf4 18.Bxg7 Nxg7 19.Nxf4
Qf6 20.cxb5 Bxb5 21.Rfe1 g5 22.Nd3 Nh5 23.a4 Qd4+ 24.Nf2 Be2
25.exf5 Nxg3 26.Rab1 Rxf5 0-1

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1970.??.??"]
[EventDate "1970.??.??"]
[Round "1"]
[Result "0-1"]
[White "Bojan Kurajica"]
[Black "Jan Hein Donner"]
[ECO "C07"]
[WhiteElo "2585"]
[BlackElo "2500"]
[PlyCount "80"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. exd5 exd5 5. Bb5+ Nc6 6. Ngf3
Bd6 7. O-O Nge7 8. dxc5 Bxc5 9. Nb3 Bb6 10. Bg5 f6 11. Be3
Bxe3 12. Bxc6+ bxc6 13. fxe3 Bg4 14. Qd4 Bxf3 15. Rxf3 O-O
16. Nc5 Rf7 17. Rd1 Qc7 18. e4 dxe4 19. Rb3 Nd5 20. c4 Nf4
21. Rd2 f5 22. Rb7 Qa5 23. Rxf7 Kxf7 24. g3 Nh3+ 25. Kg2 Ng5
26. Qd7+ Kg8 27. Ne6 Nxe6 28. Qxe6+ Kh8 29. Rf2 Qxa2 30. Qxc6
Rg8 31. b4 Qb1 32. Rxf5 e3 33. Rf1 Qc2+ 34. Kh3 e2 35. Re1 Qd2
36. Qh1 Qh6+ 37. Kg2 Qc6+ 38. Kf2 Rf8+ 39. Kxe2 Qxc4+ 40. Ke3
Qxb4 0-1

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1970.??.??"]
[EventDate "1970.??.??"]
[Round "5"]
[Result "0-1"]
[White "Nicolaas Cortlever"]
[Black "Jan Hein Donner"]
[ECO "B91"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "150"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. g3 e5
7. Nde2 Be7 8. Bg2 Nbd7 9. O-O Qc7 10. h3 b5 11. Be3 Bb7
12. a4 b4 13. Nd5 Nxd5 14. exd5 O-O 15. c3 bxc3 16. Nxc3 Rfc8
17. Qd2 Nb6 18. Bxb6 Qxb6 19. a5 Qd4 20. Qxd4 exd4 21. Ne2 Rc4
22. Rfd1 Bf6 23. b3 Rb4 24. Ra4 Rxb3 25. Nxd4 Bxd4 26. Rdxd4
Rc8 27. Be4 Rc5 28. Rab4 Rb5 29. Rxb5 Rxb5 30. Bd3 Rb2 31. Rc4
g6 32. Rc7 Bxd5 33. Bxa6 Ra2 34. Rc1 Rxa5 35. Bf1 Be6 36. Rd1
d5 37. Kg2 Kg7 38. h4 Kf6 39. Rd2 Ke5 40. Bd3 Ra3 41. f3 h6
42. Kf2 g5 43. hxg5 hxg5 44. Bb1 Bd7 45. Re2+ Kd6 46. Ra2 Rb3
47. Bc2 Rc3 48. Bd1 Bb5 49. Ra5 Bc4 50. f4 gxf4 51. gxf4 Kc6
52. Bh5 f5 53. Bg6 Bd3 54. Ke3 Bb1+ 55. Kd4 Rc4+ 56. Ke5 Re4+
57. Kxf5 Ra4+ 58. Ke5 Rxa5 59. Bxb1 Ra1 60. Bc2 Re1+ 61. Kd4
Kd6 62. Bd3 Rh1 63. Ke3 Rh3+ 64. Ke2 Kc5 65. Bf5 Ra3 66. Bg6
Kd4 67. Bf5 Re3+ 68. Kf2 Re8 69. Kf3 Kc3 70. Bg6 Rh8 71. Bf5
d4 72. Bd7 d3 73. Ke4 d2 74. Bg4 Re8+ 75. Kd5 Rg8 0-1

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1970.??.??"]
[EventDate "1970.??.??"]
[Round "7"]
[Result "1/2-1/2"]
[White "Lubomir Kavalek"]
[Black "Jan Hein Donner"]
[ECO "C11"]
[WhiteElo "2600"]
[BlackElo "2500"]
[PlyCount "72"]

1. e4 e6 2. d4 d5 3. Nc3 Nf6 4. e5 Nfd7 5. f4 c5 6. Nf3 Nc6
7. Be3 cxd4 8. Nxd4 Bc5 9. Qd2 Nxd4 10. Bxd4 Bxd4 11. Qxd4 Qb6
12. Nb5 Qxd4 13. Nxd4 Nc5 14. Bd3 Bd7 15. Kd2 O-O 16. Rae1
Rac8 17. Re3 f5 18. exf6 gxf6 19. b4 Nxd3 20. cxd3 Kf7
21. Rhe1 Rg8 22. g3 Rce8 23. Rc1 Rc8 24. Ree1 h5 25. Nf3 Ke7
26. Rxc8 Bxc8 27. Nd4 Kd6 28. Nb5+ Ke7 29. Nxa7 Bd7 30. b5 Kd6
31. a4 b6 32. a5 bxa5 33. Ra1 Kc7 34. Rxa5 Ra8 35. Ra6 Kb7
36. Rd6 Kc7 1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1970.??.??"]
[EventDate "1970.??.??"]
[Round "8"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Hans Ree"]
[ECO "E99"]
[WhiteElo "2500"]
[BlackElo "2520"]
[PlyCount "81"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Nf3 e5
7. O-O Nc6 8. d5 Ne7 9. Ne1 Nd7 10. f3 f5 11. g4 Nf6 12. Nd3
c6 13. Be3 f4 14. Bf2 g5 15. a4 h5 16. h3 Ng6 17. a5 cxd5
18. cxd5 a6 19. Na4 hxg4 20. hxg4 Bxg4 21. fxg4 Nxe4 22. Bf3
Nf6 23. Nc3 Rf7 24. Be4 Ne7 25. Bf3 Bh6 26. Nb4 Rc8 27. Qe2
Rxc3 28. bxc3 Qd7 29. Rae1 Ng6 30. Qd1 Qc8 31. c4 Bf8 32. Na2
Qxc4 33. Qb1 Nh4 34. Bxh4 gxh4 35. Kh1 Rg7 36. Qf5 Nh7 37. Rc1
Qxa2 38. Rc8 Qxa5 39. Be4 Qb5 40. Qe6+ Kh8 41. Rg1 1-0

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1970.??.??"]
[EventDate "1970.??.??"]
[Round "11"]
[Result "1/2-1/2"]
[White "Kick Langeweg"]
[Black "Jan Hein Donner"]
[ECO "E77"]
[WhiteElo "2455"]
[BlackElo "2500"]
[PlyCount "80"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. f4 d6 6. Nf3 c5
7. d5 e6 8. Be2 exd5 9. exd5 Bg4 10. O-O Na6 11. h3 Bxf3
12. Rxf3 Nc7 13. f5 Nd7 14. Ne4 Ne8 15. Bg5 Ndf6 16. Qc2 h6
17. Bxf6 Nxf6 18. Nxf6+ Qxf6 19. fxg6 Qxg6 20. Bd3 Qg5
21. Raf1 Be5 22. Kh1 Rae8 23. b3 Re7 24. Bf5 h5 25. Qf2 Rfe8
26. Bb1 h4 27. Rxf7 Qg3 28. Rf8+ Kg7 29. Qf7+ Kh6 30. Rf6+
Bxf6 31. Qxf6+ Kh5 32. Qf5+ Qg5 33. Qf3+ Kh6 34. Rf6+ Kg7
35. Rg6+ Qxg6 36. Bxg6 Kxg6 37. Qg4+ Kf7 38. Qf4+ Kg8 39. Qxh4
Rg7 40. Qf6 Re2 1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1970.??.??"]
[EventDate "1970.??.??"]
[Round "13"]
[Result "1/2-1/2"]
[White "Dragoljub Janosevic"]
[Black "Jan Hein Donner"]
[ECO "C95"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "65"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5
7. Bb3 d6 8. c3 O-O 9. h3 Nb8 10. d4 Nbd7 11. Nh4 Nb6 12. Nd2
exd4 13. cxd4 d5 14. exd5 Nbxd5 15. Qf3 c6 16. Nf5 Bb4 17. Re5
Re8 18. Nf1 Bxf5 19. Qxf5 Bd6 20. Rxe8+ Qxe8 21. Bd2 Qe4
22. Qxe4 Nxe4 23. a4 Re8 24. axb5 axb5 25. Re1 Kf8 26. Bc1 Nb4
27. Rd1 c5 28. dxc5 Bxc5 29. Be3 Bxe3 30. Nxe3 Nc5 31. Bd5 Na4
32. Bb3 Nc5 33. Bd5 1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1970.??.??"]
[EventDate "1970.??.??"]
[Round "15"]
[Result "1-0"]
[White "Pal Benko"]
[Black "Jan Hein Donner"]
[ECO "D40"]
[WhiteElo "2495"]
[BlackElo "2500"]
[PlyCount "121"]

1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 c5 5. cxd5 Nxd5 6. g3 Nc6
7. Bg2 cxd4 8. Nxd4 Nxc3 9. bxc3 Nxd4 10. Qxd4 Qxd4 11. cxd4
Bb4+ 12. Bd2 Bxd2+ 13. Kxd2 Ke7 14. Rhc1 Rd8 15. Rc7+ Rd7
16. Rac1 Kd8 17. Rxd7+ Kxd7 18. f4 Rb8 19. e4 b6 20. Ke3 Bb7
21. Bh3 Rc8 22. Rxc8 Bxc8 23. d5 Kc7 24. e5 b5 25. Kd4 Kb6
26. d6 b4 27. Bg4 Bd7 28. Bd1 Bc6 29. Bb3 g6 30. g4 Bf3 31. f5
gxf5 32. gxf5 Bg4 33. f6 Bf5 34. Ba4 Bg6 35. Be8 a6 36. a3
bxa3 37. Kc3 h6 38. Kb3 Bh5 39. Kxa3 Kb7 40. Bd7 Kb6 41. Kb4
a5+ 42. Kc4 Be2+ 43. Kd4 Bh5 44. Ke3 Kb7 45. Kf4 Kb8 46. Kg3
Kb7 47. Kf2 Bg6 48. Ke2 Kb6 49. Kd2 Bh5 50. Kc3 Bg6 51. Ba4
Bh5 52. Bc2 Kc6 53. Kb3 Kd7 54. Ka4 Kd8 55. Kxa5 Kd7 56. Kb6
Kc8 57. Kc5 Kd7 58. Kd4 Ke8 59. Ke3 Kd8 60. Kf4 Ke8 61. Be4
1-0

[Event "It IBM (cat.11)"]
[Site "Amsterdam (Netherlands)"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Andras Adorjan"]
[ECO "D86"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "26"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7
7.Bc4 c5 8.Ne2 Nc6 9.Be3 O-O 10.O-O Qc7 11.Qc1 b6 12.dxc5 Ne5
13.Bd5 Bb7 1/2-1/2

[Event "Palma de Mallorca"]
[Site "Palma de Mallorca"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Ulf Andersson"]
[ECO "E41"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "105"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 Nc6 6.Nf3 Bxc3+
7.bxc3 d6 8.e4 e5 9.d5 Ne7 10.Nh4 h6 11.f3 g5 12.Nf5 Bxf5
13.exf5 Qa5 14.Qb3 O-O-O 15.Rb1 Qa6 16.Kf2 e4 17.Bxe4 Nxe4+
18.fxe4 Ng8 19.h4 Nf6 20.Kf3 g4 21.Kf4 Rde8 22.Re1 Rhg8 23.Qb5
Qxb5 24.Rxb5 Nh5+ 25.Ke3 Rxe4+ 26.Kxe4 Re8+ 27.Kd3 Rxe1
28.Bxh6 Rf1 29.Rb2 Rxf5 30.Re2 Kd7 31.Re4 g3 32.Rg4 Rf2 33.Be3
Rxg2 34.Rg5 Nf6 35.a4 Ke7 36.Bf4 Rf2 37.Ke3 Rc2 38.Kd3 Rf2
39.Ke3 Ra2 40.Bxg3 Rxa4 41.Kd3 Ra1 42.Rf5 Nd7 43.Rf2 f6 44.Rh2
Rg1 45.Bf4 Ne5+ 46.Bxe5 fxe5 47.h5 Rg3+ 48.Ke4 Kf7 49.h6 Kg8
50.h7+ Kh8 51.Rh6 Rxc3 52.Rxd6 Rxc4+ 53.Kxe5 1/2-1/2

[Event "West Berlin"]
[Site "West Berlin"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "12"]
[Result "1/2-1/2"]
[White "Ulf Andersson"]
[Black "Jan Hein Donner"]
[ECO "B99"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "199"]

1.e4 c5 2.Nf3 d6 3.Nc3 a6 4.d4 cxd4 5.Nxd4 Nf6 6.Bg5 e6 7.f4
Be7 8.Qf3 Qc7 9.O-O-O Nbd7 10.Be2 b5 11.Bxf6 Nxf6 12.e5 Bb7
13.exf6 Bxf3 14.Bxf3 Bxf6 15.Bxa8 Bxd4 16.Rxd4 d5 17.Bxd5 exd5
18.Re1+ Kf8 19.Re5 g6 20.Nxd5 Qb8 21.Rde4 Kg7 22.f5 gxf5
23.Rxf5 Rd8 24.Rg4+ Kh8 25.Rh4 Qa7 26.b3 Kg7 27.Rg4+ Kh8
28.Rh4 Rd6 29.Kb2 Qd7 30.Rhh5 Kg7 31.g4 Rg6 32.h3 Rd6 33.a3 h6
34.b4 Qc6 35.Re5 Qc4 36.Nc3 Qf1 37.Rd5 Re6 38.Rd7 Qg2 39.Nd5
Rc6 40.Ne3 Qf2 41.Nf5+ Kh8 42.Nd4 Rf6 43.Re5 Kh7 44.Re8 Qd2
45.Re2 Qd1 46.Ree7 Qf1 47.h4 Qf4 48.g5 hxg5 49.hxg5 Qxg5
50.Rxf7+ Rxf7 51.Rxf7+ Kg8 52.Rf8+ Kh7 53.c3 Qg2+ 54.Nc2 Qg6
55.Rf2 Kg7 56.Nd4 Qg1 57.Rf5 Kg6 58.Re5 Kf7 59.Re2 Qf1 60.Rd2
Qe1 61.Rh2 Qd1 62.Nb3 Qd6 63.Re2 Qc6 64.Nc5 Qd6 65.a4 bxa4
66.Nxa4 Qd3 67.Rf2+ Ke7 68.Nc5 Qc4 69.Nb3 Qd3 70.Rd2 Qf1
71.Nc5 Qc4 72.Nb3 Qf1 73.Rd4 Qe2+ 74.Nd2 Qg2 75.Kb3 Qh1 76.Nc4
Qb1+ 77.Nb2 Qf1 78.Rd1 Qe2 79.Ra1 Kd7 80.Nc4 Kc7 81.Rg1 Kb8
82.Ra1 Kb7 83.Na5+ Kc7 84.Rc1 Qd3 85.Kb2 Qe2+ 86.Rc2 Qf1
87.Nb3 Qc4 88.Rg2 Qf1 89.Rd2 Qe1 90.Rd4 Qe2+ 91.Ka3 Qc2 92.c4
Qc3 93.Rg4 Qc2 94.Rg7+ Kb8 95.c5 Qc4 96.Rb7+ Kc8 97.Rb6 Qd3
98.Rd6 Qf1 99.Rd2 Kc7 100.Rd6 1/2-1/2

[Event "Wijk aan Zee (Netherlands)"]
[Site "Wijk aan Zee (Netherlands)"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Ulf Andersson"]
[Black "Jan Hein Donner"]
[ECO "A06"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1.Nf3 d5 2.b3 Nf6 3.Bb2 Bg4 4.e3 e6 5.Be2 Nbd7 6.h3 Bxf3
7.Bxf3 Bd6 8.d3 O-O 9.O-O Qe7 10.a4 a5 11.Nd2 c6 12.Qe2 e5
13.e4 d4 14.g3 Bb4 15.Bg2 Ne8 16.h4 Nc7 17.Nf3 b5 18.h5 Ne6
19.Bh3 Rfb8 20.Nh4 Bc3 21.Bxc3 dxc3 22.Bxe6 fxe6 23.Qg4 bxa4
24.Rxa4 Nb6 25.Raa1 a4 26.bxa4 Rxa4 27.Nf3 Rxa1 28.Rxa1 Nd7
29.h6 g6 30.Ra7 Nf6 31.Rxe7 Nxg4 32.Rg7+ Kf8 33.Rxh7 Rb1+
34.Kg2 Rc1 35.Rh8+ Kf7 36.Ng5+ Ke7 37.h7 Rxc2 38.Rf8 Kxf8
39.h8=Q+ Ke7 40.Qg7+ Kd6 41.Qf8+ 1-0

[Event "Amsterdam (Netherlands)"]
[Site "Amsterdam (Netherlands)"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Walter Shawn Browne"]
[ECO "A58"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "83"]

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 d6 7.Nf3
Qa5 8.Nd2 Nbd7 9.g3 g6 10.e4 Bxf1 11.Kxf1 Bg7 12.Nc4 Qb4
13.Qe2 Nb6 14.Nxb6 Qxb6 15.Kg2 O-O 16.Rb1 Rfb8 17.Bd2 Ne8
18.b3 Nc7 19.a4 Rb7 20.Rhc1 Rab8 21.Qd3 Qa7 22.Qc2 Qa6 23.Nd1
Qe2 24.Ne3 Na6 25.Re1 Qh5 26.Nc4 Rf8 27.Na5 Rc7 28.Qc4 Nb8
29.b4 f5 30.f4 fxe4 31.Qxe4 cxb4 32.Rxb4 Na6 33.Rc4 Nc5 34.Qf3
Qxf3+ 35.Kxf3 Rf5 36.Nb3 Rxd5 37.Be3 Rd3 38.Nxc5 Rxc5 39.Rxc5
dxc5 40.Ke4 Ra3 41.Bxc5 Rxa4+ 42.Kf3 1/2-1/2

[Event "Havana"]
[Site "Havana"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Efim Geller"]
[Black "Jan Hein Donner"]
[ECO "D14"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "23"]

1.Nf3 d5 2.c4 c6 3.d4 Nf6 4.cxd5 cxd5 5.Nc3 Nc6 6.Bf4 Bf5 7.e3
e6 8.Bb5 Bb4 9.Qa4 O-O 10.Bxc6 Bxc3+ 11.bxc3 bxc6 12.O-O
1/2-1/2

[Event "Beverwijk"]
[Site "Beverwijk"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Vlastimil Hort"]
[ECO "D72"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "56"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d5 5.cxd5 Nxd5 6.e4 Nb6 7.Ne2
e5 8.d5 O-O 9.O-O Nc4 10.b3 Nd6 11.Bb2 Re8 12.Nd2 Na6 13.f4
Bd7 14.Bxe5 Bxe5 15.fxe5 Rxe5 16.Nc3 Qe7 17.Qe1 Nb4 18.Qf2 f5
19.Nf3 Rxe4 20.Nxe4 Nxe4 21.Qb2 Qc5+ 22.Qd4 Qxd4+ 23.Nxd4 Nxd5
24.Rfe1 c5 25.Nf3 Re8 26.Nd2 Ndf6 27.Rad1 Bc6 28.Nc4 b6
1/2-1/2

[Event "Havana"]
[Site "Havana"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Vlastimil Hort"]
[Black "Jan Hein Donner"]
[ECO "D57"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "38"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bg5 O-O 6.e3 h6 7.Bh4
Ne4 8.Bxe7 Qxe7 9.cxd5 Nxc3 10.bxc3 exd5 11.Bd3 c5 12.O-O Nc6
13.dxc5 Qxc5 14.Qb3 Bg4 15.Nd4 Ne5 16.Bc2 b6 17.h3 Bd7 18.Rfc1
Rac8 19.Bd1 Nd3 1/2-1/2

[Event "Amsterdam IBM"]
[Site "4"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Borislav Ivkov"]
[Black "Jan Hein Donner"]
[ECO "E42"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "112"]

1.c4 Nf6 2.Nc3 e6 3.d4 Bb4 4.e3 c5 5.Ne2 d5 6.a3 Ba5 7.dxc5
dxc4 8.Qxd8+ Kxd8 9.Bd2 Nbd7 10.Ng3 Nxc5 11.Bxc4 Bc7 12.Rd1 a6
13.e4 Bd7 14.f4 Bc6 15.e5 Nfd7 16.Be3 Ke7 17.O-O Rhc8 18.Ba2
Bb6 19.Rfe1 Na4 20.Nxa4 Bxe3+ 21.Rxe3 Bxa4 22.Rd2 Rc1+ 23.Kf2
Rac8 24.Ne4 R8c2 25.Rxc2 Rxc2+ 26.Re2 Rxe2+ 27.Kxe2 Bc6 28.Ke3
Nb6 29.g3 Na4 30.b3 Bxe4 31.bxa4 Bc2 32.a5 Kd7 33.Kd4 Kc6
34.Bc4 Bf5 35.Be2 b6 36.g4 Bb1 37.Bxa6 bxa5 38.a4 h6 39.Bb5+
Kb6 40.h4 Bc2 41.Be8 Bd1 42.g5 hxg5 43.hxg5 Bg4 44.Bxf7 Bf5
45.Be8 g6 46.Bb5 Bc2 47.Bc4 Bf5 48.Bb3 Kc6 49.Bd1 Kb6 50.Bf3
Bc2 51.Bg4 Bb3 52.Bh3 Ba2 53.Bg2 Bb1 54.Kc4 Ba2+ 55.Kc3 Bb1
56.Kd4 Bc2 1/2-1/2

[Event "Wijk aan Zee"]
[Site "Wijk aan Zee"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Borislav Ivkov"]
[ECO "A42"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "72"]

1.d4 d6 2.c4 g6 3.Nc3 Bg7 4.e4 e5 5.Be3 exd4 6.Bxd4 Nf6 7.f3
Nc6 8.Be3 O-O 9.Nge2 Ne5 10.Nf4 c6 11.Qb3 Nfd7 12.Rd1 Qe7
13.Be2 Nc5 14.Qc2 f5 15.b4 fxe4 16.bxc5 exf3 17.cxd6 Qe8
18.gxf3 Nxf3+ 19.Kf2 Ng5 20.h4 Ne6 21.Kg3 Nxf4 22.Bxf4 Rxf4
23.Kxf4 Bf5 24.Bd3 Qe5+ 25.Kf3 Bg4+ 26.Kxg4 Qh5+ 27.Kg3 Be5+
28.Kf2 Rf8+ 29.Bf5 Rxf5+ 30.Ke3 Qf3+ 31.Kd2 Bf4+ 32.Ke1 Bg3+
33.Kd2 Bf4+ 34.Ke1 Qxh1+ 35.Ke2 Qg2+ 36.Kd3 Qf3+ 0-1

[Event "London (England)"]
[Site "London (England)"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Raymond Keene"]
[ECO "D07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1.d4 d5 2.c4 Nc6 3.Nc3 dxc4 4.Nf3 Bg4 5.d5 Bxf3 6.exf3 Ne5
7.Bf4 Nd7 8.Bxc4 a6 9.O-O Ngf6 10.Re1 Nh5 11.Be3 g6 12.d6 cxd6
13.Qb3 e6 14.Bd4 Bg7 15.Bxe6 O-O 16.Bxg7 Nc5 17.Qa3 Kxg7
18.Bd5 Qg5 19.Rad1 Rae8 20.Rxe8 Rxe8 21.g3 Qe7 22.b4 Ne6
23.Ne4 f5 24.Qc3+ Kh6 25.Bxe6 fxe4 26.Bd5 Nf6 27.Bxe4 Nxe4
28.fxe4 Qxe4 29.Qd2+ Kg7 30.Qxd6 Re7 31.h4 Qe2 32.Qd4+ Kh6
33.Qf4+ Kg7 34.Rd2 Qe1+ 35.Kg2 Rf7 36.Qd4+ Kg8 37.Rc2 Qe6
38.a4 Qf5 39.Rc5 Qf3+ 40.Kg1 Rf8 41.Rc7 1-0

[Event "Tournament (candidates)"]
[Site "Palma de Majorca (Spain)"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Raymond Keene"]
[ECO "A42"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "50"]

1. d4 { Notes by Raymond Keene. } g6 2. c4 Bg7 3. Nc3 d6 4. e4
Nc6 5. d5 {The most direct attempt to refute Black's
opening. Less forceful is 5 Be3 e5 (or 5...Nf6!?) 6 d5 Nce7 7
g4 Nf6! and if 8 g5 Nh5 followed, if necessary, by ...Nf4,
sacrificing a pawn to open the diagonal for the king's
bishop.} 5...Nd4 6. Be3 c5 7. Nge2 Qb6 8. Qd2 {From this
position Black has three distinct possibilities, of which my
choice is probably the worst, but in 1971 we did not know of
Timman's critical analysis. The other two are: a) 8...Nf6!? 9
f3 (after 9 Nxd4 cxd4 10 Bxd4 the idea is 10...Nxe4! - see
Farago - Keene, game 85) 9...Nd7 10 Na4 Qa6 11 Nxd4 Qxa4 12
Nb5 with great complications (Donner - Timman, Wijk aan Zee
1974), and b) 8...f5!?, a very risky move devised by the
German Grandmaster Robert Huebner. Although Huebner can make
this sort of thing work, I would not necessarily recommend it
to anyone else!} 8...Bg4 {?!} 9. O-O-O {? A mistake which
exposes White's king to Black's fianchettoed bishop. Timman -
Suttles, last round, Hastings 1973/74, went instead: 9 f3!
Bxf3 10 Na4 Qa6 11 Nxd4 cxd4 12 Bxd4 Bxd4 13 Qxd4 Nf6 (thus
far analysis by the Soviet Lady Master Zvorikina, which
continued: 14 Nc3 Bg4 15 c5 dxc5 16 Qxc5 Qd6=; this we were
aware of in 1971) 14 c5! Qa5+ 15 Nc3 dxc5 16 Qe5 Bg4 17 d6
O-O-O 18 dxe7+-. Timman devoted the entire free day before the
last round to analysis of this variation, since a win against
Suttles was crucial for his second GM norm. The last round of
Hastings '73/74 thus witnessed the birth of a new Grandmaster
and the death of a variation of the Modern Defence.} 9...Nxe2+
10. Nxe2 Qa6 {Driving the knight to c3 where it forms a target
for the advance of Black's queenside pawns.} 11. f3 Bd7
12. Nc3 Qa5 13. Qc2 a6 14. Bd2 Nf6 15. Re1 O-O 16. Kb1 Qc7
17. f4 b5 {! Black enjoys the tremendous luxury of playing a
Benko Gambit (1 d4 Nf6 2 c4 c5 3 d5 b5 is the gambit proper)
against White's king. The Dutch Grandmaster should now have
done anything but accept the pawn.} 18. cxb5 {? Even 18 e5 is
an improvement, although 18...Bf5 19 Bd3 Bxd3 20 Qxd3 dxe5 21
fxe5 Nd7 still favours Black.} 18...axb5 19. Nxb5 Qb7 20. Nc3
{In the post mortem we also looked at 20 a4 Nxd5!? (of course
quieter methods are also possible) 21 exd5 Bf5 22 Bd3 Bxd3 23
Qxd3 Rxa4 24 Nc3 Rb4 with a raging attack. Watch the raking
effect of that black king's bishop.} 20...Rfb8 21. Bc4 Ne8
{Commencing a stock Benko Gambit manoeuvre designed to
exchange the knight on c3.} 22. Re2 Nc7 23. Rhe1 {Apparently
building up for an impressive breakthrough in the centre with
e4-e5, but it's all a sham, since ...Bf5 is always an
annihilating response.} 23...Nb5 {A pure Benko position,
except for the bizarre placing of the white king.} 24. Nxb5
Bxb5 25. b3 {If 25 Bxb5 Qxb5 26 e5 Qb7 followed by ...Qxd5-+.}
25...Rxa2 {! Just in time for a miniature; if 26 Kxa2 Ra8+ and
mates, or 26 Qxa2 Bxc4 followed by ...Bxb3-+.} 0-1

[Event "Amsterdam (31.07.71) Inf12/200"]
[Site "15"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Paul Keres"]
[Black "Jan Hein Donner"]
[ECO "B10"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "91"]

1.e4 c6 2.Nc3 d5 3.Nf3 g6 4.d4 Bg7 5.h3 dxe4 6.Nxe4 Nd7 7.Bc4
Ngf6 8.Qe2 Nxe4 9.Qxe4 Nb6 10.Bb3 a5 11.a4 Bf5 12.Qh4 Qd7
13.O-O Nd5 14.Re1 h6 15.Bd2 g5 16.Qg3 Qc7 17.Ne5 e6 18.Qf3
O-O-O 19.g4 Bxe5 20.Rxe5 Bg6 21.c4 Nb4 22.Bc3 Rhe8 23.Rd1 Re7
24.Qe2 Red7 25.Re3 b6 26.Re5 Kb7 27.Bxb4 axb4 28.d5 exd5
29.cxd5 cxd5 30.Rdxd5 Rxd5 31.Bxd5+ Ka7 32.Bf3 Bd3 33.Qe3 Ba6
34.a5 Rd7 35.Rf5 Bc4 36.axb6+ Qxb6 37.Ra5+ Ba6 38.Be2 Qxe3
39.Rxa6+ Kb7 40.fxe3 Rd2 41.Bf1 Rxb2 42.Rxh6 Rc2 43.Rf6 b3
44.Bd3 Rc3 45.Be4+ Kc8 46.Rc6+ 1-0

[Event "Wijk aan Zee"]
[Site "Wijk aan Zee"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "12"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Viktor Korchnoi"]
[ECO "D72"]
[WhiteElo "2500"]
[BlackElo "2660"]
[PlyCount "106"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 d5 5. cxd5 Nxd5 6. e4 Nb6
7. Ne2 Bg4 8. Nbc3 Nc6 9. d5 Nd4 10. h3 Bf3 11. Bxf3 Nxf3+
12. Kf1 c6 13. Kg2 Ne5 14. f4 Ned7 15. dxc6 bxc6 16. Qc2 O-O
17. Be3 Qc7 18. Rad1 Qb7 19. g4 c5 20. Kh2 Rac8 21. b3 Rfe8
22. Ng3 Bd4 23. Qd2 e5 24. f5 Qc6 25. Rhe1 a5 26. Rc1 a4
27. Qf2 axb3 28. axb3 Ra8 29. Rf1 Kh8 30. Qf3 Ra3 31. Nce2 Qf6
32. fxg6 Qxf3 33. g7+ Kg8 34. Rxf3 Rxb3 35. Nf5 Bxe3 36. Nxe3
Rb2 37. Rf2 Kxg7 38. Nf5+ Kf8 39. Rcf1 Re6 40. g5 Nc4 41. Nh6
Ke8 42. Ng3 Reb6 43. Rxb2 Rxb2+ 44. Kh1 Nd6 45. Rd1 Rb6
46. Kg2 c4 47. Nhf5 Nxf5 48. Nxf5 c3 49. Nd6+ Kd8 50. Nc4 Rb4
51. Nxe5 c2 52. Nxf7+ Ke7 53. Rc1 Rb2 0-1

[Event "Palma de Mallorca"]
[Site "Palma de Mallorca"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Ljubomir Ljubojevic"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "79"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Bc4 Nxe4 6.Bxf7+ Kxf7
7.Nxe4 Re8 8.Nf3 Kg8 9.O-O Nd7 10.c3 Nf6 11.Qb3+ d5 12.Nf2 c6
13.Re1 Qb6 14.Qa3 Bf8 15.Ne5 Qc7 16.Qb3 b6 17.Qd1 c5 18.Be3
Bb7 19.Qf3 e6 20.Rad1 Bg7 21.Qh3 Re7 22.Nfg4 Nxg4 23.Qxg4 Rf8
24.h4 Kh8 25.h5 gxh5 26.Qxh5 Kg8 27.Qg4 Kh8 28.Qh3 Kg8 29.Bf2
Bc6 30.Bh4 Ree8 31.Bg5 Bb5 32.Re3 a5 33.Rg3 Rf5 34.Qh4 Rxg5
35.Qxg5 Rf8 36.Re1 Be8 37.Ng4 Bg6 38.Rxe6 Qxf4 39.Rxg6 hxg6
40.Qxg6 1-0

[Event "Wijk aan Zee"]
[Site "Wijk aan Zee"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "11"]
[Result "1/2-1/2"]
[White "Miguel Najdorf"]
[Black "Jan Hein Donner"]
[ECO "E45"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "101"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Ne2 Ba6 6.Ng3 Bxc3+
7.bxc3 d5 8.Ba3 dxc4 9.e4 Qd7 10.Be2 Nc6 11.O-O O-O-O 12.Qc2
h5 13.Rfd1 h4 14.Nf1 Na5 15.Bb4 Qc6 16.f3 Nh5 17.Ne3 Nf4
18.Bf1 Rh5 19.Qd2 Nd3 20.d5 Qa4 21.Kh1 Nb7 22.Bxd3 cxd3 23.c4
c5 24.dxc6 Qxc6 25.Qc3 h3 26.g4 Rhh8 27.Rxd3 Rxd3 28.Qxd3 Rd8
29.Qa3 Bxc4 30.Rc1 Kb8 31.Be1 b5 32.Nxc4 bxc4 33.Bg3+ Ka8
34.Bf2 a6 35.Qe3 Kb8 36.Qf4+ Ka8 37.Qe3 Kb8 38.Qf4+ Kc8
39.Qxf7 c3 40.Kg1 c2 41.Be3 Rd1+ 42.Kf2 Rxc1 43.Bxc1 Qc5+
44.Ke2 Nd8 45.Qxg7 e5 46.Qf6 Nc6 47.Qe6+ Kc7 48.Qf7+ Kb6
49.Qb3+ Kc7 50.Qf7+ Kb6 51.Qb3+ 1/2-1/2

[Event "It (a)"]
[Site "Wijk aan Zee (Netherlands)"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Petrosian"]
[ECO "E73"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "26"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Bg5 Nbd7
7. Qd2 c6 8. Nf3 e5 9. O-O Re8 10. d5 c5 11. Ne1 Qe7 12. Nd3
Qf8 13. f3 a6 1/2-1/2

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Lajos Portisch"]
[Black "Jan Hein Donner"]
[ECO "A33"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "67"]

1.c4 c5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 cxd4 5.Nxd4 e6 6.g3 Qb6 7.Nb3
Bb4 8.Bg2 Ne5 9.Be3 Qc7 10.c5 Nc4 11.Qd4 Nxe3 12.Qxe3 Rb8
13.O-O Bxc3 14.Qxc3 b6 15.c6 O-O 16.Nd4 a6 17.Rac1 d6 18.Rfd1
e5 19.Nc2 b5 20.Rd2 Rb6 21.Nb4 a5 22.Nd5 Nxd5 23.Bxd5 Rb8
24.b4 a4 25.Qd3 Rd8 26.f4 Be6 27.Kh1 g6 28.e4 Bxd5 29.Qxd5 Kg7
30.Rf2 exf4 31.Rxf4 Re8 32.Rcf1 Re7 33.Rf6 Rf8 34.Rxd6 1-0

[Event "It, Amsterdam (Netherlands)"]
[Site "It, Amsterdam (Netherlands)"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Vasily Smyslov"]
[Black "Jan Hein Donner"]
[ECO "A10"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "36"]

1. c4 g6 2. Nc3 Bg7 3. d4 Nf6 4. Bg5 d6 5. e3 O-O 6. Be2 c6
7. Nf3 Bg4 8. h3 Bxf3 9. Bxf3 e6 10. O-O d5 11. cxd5 cxd5
12. Qb3 Qd7 13. Na4 b6 14. Rfc1 Nc6 15. Nc3 Rfc8 16. Be2 Qb7
17. Qd1 Ne8 18. Bf4 Bf8 1/2-1/2

[Event "Amsterdam IBM"]
[Site "Amsterdam IBM"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "14"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Jan Timman"]
[ECO "A15"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "77"]

1.Nf3 Nf6 2.c4 b6 3.d4 Bb7 4.e3 e6 5.Bd3 d5 6.Nc3 Bd6 7.O-O
O-O 8.b3 Nbd7 9.Bb2 a6 10.Qe2 Ne4 11.Rad1 Qe7 12.Nb1 f5 13.Ne5
Bxe5 14.dxe5 Nec5 15.Bc2 dxc4 16.bxc4 b5 17.Ba3 Nxe5 18.Bb3
Nf3+ 19.gxf3 Qg5+ 20.Kh1 Qh5 21.e4 Rf6 22.Rg1 Nxe4 23.Rd3 Ng5
24.Nd2 Nh3 25.Rg3 Rh6 26.Rd7 Ng5 27.Rg2 Rg6 28.Bb2 Kh8 29.Bd1
bxc4 30.Rxc7 Bd5 31.Be5 h6 32.Rg3 Rd8 33.Kg2 Kh7 34.Qe3 Qh4
35.Be2 Rf8 36.Qf4 Qh5 37.Bxc4 Ba8 38.Bxa6 Rd8 39.Bb7 1-0

[Event "Leeuwarden ch-NED"]
[Site "Leeuwarden ch-NED"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "8"]
[Result "1-0"]
[White "Jan Timman"]
[Black "Jan Hein Donner"]
[ECO "B14"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "53"]

1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 e6 6.Nf3 Be7 7.cxd5
Nxd5 8.Bd3 O-O 9.O-O Nc6 10.a3 Bd7 11.Re1 Re8 12.Be4 Nxc3
13.bxc3 Rc8 14.Bf4 Bf6 15.Qb1 g6 16.Qxb7 e5 17.dxe5 Nxe5
18.Rad1 Nxf3+ 19.gxf3 Re7 20.Rd6 Bxc3 21.Red1 Rc7 22.Qd5 Qe8
23.Bxg6 Be5 24.Bxe5 Rxe5 25.Bxf7+ Kf8 26.Bxe8 Rxd5 27.Bxd7 1-0

[Event "cat.11"]
[Site "It  Amsterdam (NED)"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Wolfgang Uhlmann"]
[Black "Jan Hein Donner"]
[ECO "E73"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "84"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 h6 7.Be3 c5
8.d5 e6 9.dxe6 Bxe6 10.Qd2 Kh7 11.h3 Nc6 12.Nf3 Qe7 13.O-O
Rfd8 14.Rad1 a6 15.Bf4 Ne8 16.a3 Rab8 17.Nd5 Bxd5 18.exd5 Ne5
19.b4 Nd7 20.Rfe1 Qf8 21.Rb1 Nef6 22.Bd3 Re8 23.Rxe8 Rxe8
24.Qc2 Ra8 25.Bf1 a5 26.bxa5 Rxa5 27.Rxb7 Rxa3 28.Rc7 Qe7
29.Qe2 Qxe2 30.Bxe2 Bf8 31.g4 Ra8 32.h4 Rd8 33.g5 Ne8 34.Rb7
h5 35.Nd2 Bg7 36.Ne4 Be5 37.Bxe5 Nxe5 38.f4 Nd7 39.Bd1 Kg7
40.Ba4 Nf8 41.Bxe8 Rxe8 42.Nxd6 Re1+ 1-0

[Event "Wijk aan Zee Hoogovens A, NED"]
[Site "Wijk aan Zee Hoogovens A, NED"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1/2-1/2"]
[White "C B Van den Berg"]
[Black "Jan Hein Donner"]
[ECO "B06"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "57"]

1. e4 g6 2. d4 Bg7 3. c3 d5 4. Nd2 dxe4 5. Nxe4 Nd7 6. Bc4
Ndf6 7. Ng5 e6 8. N1f3 Ne7 9. Qe2 O-O 10. O-O Ned5 11. Bb3 b6
12. c4 Ne7 13. Rd1 Bb7 14. Ne5 Qc8 15. Ngf3 h6 16. h3 Rd8
17. Bf4 Nd7 18. Rd2 Nxe5 19. Nxe5 c5 20. Rad1 cxd4 21. Rxd4
Rxd4 22. Rxd4 Nc6 23. Rd6 Nxe5 24. Bxe5 Qc5 25. Bg3 e5 26. Rd2
Rc8 27. Kh2 a5 28. Qd3 Bf8 29. f3 1/2-1/2

[Event "Wijk aan Zee Hoogovens A, NED"]
[Site "Wijk aan Zee Hoogovens A, NED"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "3"]
[Result "1/2-1/2"]
[White "Robert Huebner"]
[Black "Jan Hein Donner"]
[ECO "B92"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "50"]

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 Qc7 10. a4 Be6 11. a5 Nbd7
12. Nd5 Nxd5 13. exd5 Bf5 14. c4 Bg6 15. Nd2 f5 16. f3 Bf6
17. Ra2 Qd8 18. b4 Bg5 19. Qb3 Bxe3+ 20. Qxe3 Nf6 21. Nb3 Qd7
22. Rd1 Bf7 23. Nd2 Rae8 24. Re1 Bg6 25. Bd1 Qd8 1/2-1/2

[Event "Wijk aan Zee Hoogovens A, NED"]
[Site "Wijk aan Zee Hoogovens A, NED"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "4"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Kick Langeweg"]
[ECO "E41"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "88"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 Bxc3+
7. bxc3 d6 8. e4 e5 9. d5 Ne7 10. Nh4 h6 11. f3 g5 12. Nf5
Nxf5 13. exf5 Nh5 14. g3 Ng7 15. Qc2 Bd7 16. Kf2 Qf6 17. g4
O-O-O 18. Be3 Qe7 19. h4 f6 20. Rh3 Rdf8 21. Rah1 Rhg8
22. hxg5 hxg5 23. Rh7 Qd8 24. Kg2 Kb8 25. Qb2 Be8 26. Bc2 Qa5
27. R1h6 Qd8 28. Qa3 Rf7 29. Qc1 Qa5 30. Bb3 Qd8 31. Qc2 Qe7
32. Qd1 Nxf5 33. Rxf7 Nxe3+ 34. Kg3 Bxf7 35. Qd3 f5 36. gxf5
g4 37. Qxe3 gxf3+ 38. Kxf3 e4+ 39. Ke2 Qe5 40. Bc2 Rg2+
41. Kd1 Qxf5 42. Kc1 Qf1+ 43. Kb2 Qd3 44. Qc1 Qxc4 0-1

[Event "Wijk aan Zee Hoogovens A, NED"]
[Site "Wijk aan Zee Hoogovens A, NED"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "5"]
[Result "1/2-1/2"]
[White "Svetozar Gligoric"]
[Black "Jan Hein Donner"]
[ECO "E52"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "52"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6
7. O-O Bb7 8. a3 Be7 9. cxd5 exd5 10. b4 Ne4 11. Bb2 Nxc3
12. Bxc3 Bd6 13. Qc2 g6 14. b5 c5 15. bxc6 Nxc6 16. Qb2 Qe7
17. Rfb1 Rab8 18. Ne5 Rfc8 19. Nxc6 Bxc6 20. Bb4 Ba4 21. Bxd6
Qxd6 22. Qb4 Qd7 23. Rc1 Rc6 24. Bf1 Rc2 25. Rxc2 Bxc2 26. Rc1
Rc8 1/2-1/2

[Event "Wijk aan Zee Hoogovens A, NED"]
[Site "Wijk aan Zee Hoogovens A, NED"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "6"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "F Kuijpers"]
[ECO "A26"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "75"]

1. c4 e5 2. Nc3 d6 3. g3 g6 4. Bg2 Bg7 5. d3 Nc6 6. Rb1 f5
7. b4 Nf6 8. b5 Ne7 9. e4 O-O 10. Nge2 Nh5 11. exf5 gxf5
12. Nd5 Nxd5 13. Bxd5+ Kh8 14. O-O f4 15. Nc3 Qe8 16. Bf3 Nf6
17. Kh1 Qf7 18. gxf4 exf4 19. Nd5 Nxd5 20. Bxd5 Be6 21. Bxb7
Rab8 22. Bf3 d5 23. cxd5 Bxd5 24. a4 Rb6 25. Rb4 Rh6 26. Bxd5
Qxd5+ 27. Re4 Rh3 28. f3 Rxh2+ 29. Kxh2 Qh5+ 30. Kg2 Be5
31. Rf2 Rg8+ 32. Kf1 Qh1+ 33. Ke2 Rg1 34. Qd2 Rg2 35. Rxe5
Rxf2+ 36. Kxf2 Qh2+ 37. Ke1 Qg1+ 38. Ke2 1-0

[Event "Wijk aan Zee Hoogovens A, NED"]
[Site "Wijk aan Zee Hoogovens A, NED"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "9"]
[Result "0-1"]
[White "Levente Lengyel"]
[Black "Jan Hein Donner"]
[ECO "E63"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "154"]

1. c4 Nf6 2. Nc3 g6 3. g3 Bg7 4. Bg2 O-O 5. d4 d6 6. Nf3 Nc6
7. O-O a6 8. h3 Rb8 9. Be3 b5 10. Nd2 Bd7 11. Rc1 Na5 12. b3
bxc4 13. bxc4 Rb2 14. Rc2 Rb4 15. Qc1 Qb8 16. Qa3 Nxc4
17. Nxc4 Rxc4 18. Rb2 Qd8 19. Rb3 c6 20. Qxa6 d5 21. Na4 Bc8
22. Qa7 Nd7 23. Rd1 Re8 24. Bf4 e6 25. Bf1 g5 26. Bd6 e5
27. dxe5 Bxe5 28. Bxe5 Nxe5 29. Nb6 Rc2 30. Nxc8 Qxc8 31. Rdb1
Qf5 32. Rb8 Rxb8 33. Qxb8+ Kg7 34. Qb3 d4 35. g4 Qe4 36. Rb2
Rc1 37. Qg3 c5 38. Qg2 Qxg2+ 39. Kxg2 c4 40. Rb5 Ng6 41. Rxg5
c3 42. e3 c2 43. Rc5 Nh4+ 44. Kg3 Rxf1 45. Rxc2 Ng6 46. exd4
Rd1 47. Rc4 Rd3+ 48. f3 Ra3 49. Rc2 Ne7 50. h4 h6 51. Kf4 Nd5+
52. Ke5 Nb4 53. Rc4 Nd3+ 54. Kd6 Rxa2 55. Rc3 Nf4 56. h5 Re2
57. Ra3 Re6+ 58. Kc5 Re1 59. Kb4 Rd1 60. Kc4 Rc1+ 61. Kb4 Nd5+
62. Kb5 Nf4 63. Kb4 Rd1 64. Kc4 Kf6 65. Ra5 Ne6 66. Rf5+ Ke7
67. d5 Ng7 68. Rf4 f5 69. gxf5 Kf6 70. Rg4 Nxf5 71. Rg6+ Ke5
72. Re6+ Kf4 73. Kc5 Kxf3 74. Rg6 Kf4 75. Re6 Kg4 76. Re5 Rh1
77. Kc6 Rxh5 0-1

[Event "Wijk aan Zee Hoogovens A, NED"]
[Site "Wijk aan Zee Hoogovens A, NED"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "10"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Hans Ree"]
[ECO "A36"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "67"]

1. c4 g6 2. g3 Bg7 3. Bg2 c5 4. Nc3 Nc6 5. e3 e6 6. Nge2 Nge7
7. O-O O-O 8. d4 cxd4 9. Nxd4 Nxd4 10. exd4 d5 11. cxd5 Nxd5
12. Nxd5 exd5 13. Bf4 Qb6 14. Be5 Qxb2 15. Bxg7 Kxg7 16. Bxd5
Bf5 17. Bg2 Rad8 18. d5 Rfe8 19. Qa4 a6 20. Rad1 Re2 21. Bf3
Rc2 22. g4 Bd7 23. Qf4 Qf6 24. Qg3 Rxa2 25. Be4 Re8 26. Rfe1
Ra4 27. f3 Ra2 28. Kh1 b5 29. Rc1 b4 30. Rc7 Rd8 31. g5 Qd4
32. Qd6 Bh3 33. Rxf7+ Kxf7 34. Bxg6+ 1-0

[Event "Wijk aan Zee Hoogovens A, NED"]
[Site "Wijk aan Zee Hoogovens A, NED"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "13"]
[Result "1-0"]
[White "Henrique Mecking"]
[Black "Jan Hein Donner"]
[ECO "E52"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "33"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 b6
7. a3 Be7 8. cxd5 exd5 9. b4 c5 10. dxc5 bxc5 11. bxc5 Bxc5
12. O-O Qe7 13. Bb2 Nc6 14. Qa4 Bb7 15. Rfc1 Bd6 16. Qh4 Ne5
17. Nxe5 1-0

[Event "Wijk aan Zee Hoogovens A, NED"]
[Site "Wijk aan Zee Hoogovens A, NED"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "15"]
[Result "1/2-1/2"]
[White "Fridrik Olafsson"]
[Black "Jan Hein Donner"]
[ECO "D37"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "84"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Nf3 Be7 5. g3 O-O 6. Bg2 Nbd7
7. Qd3 dxc4 8. Qxc4 a6 9. Qd3 c5 10. O-O cxd4 11. Qxd4 Nc5
12. Bf4 Qxd4 13. Nxd4 Rd8 14. Rfd1 Bd7 15. Bc7 Rdc8 16. Bb6 a5
17. Rd2 a4 18. a3 Bd8 19. Bxd8 Rxd8 20. Rad1 Kf8 21. f4 Ke7
22. e4 Ne8 23. e5 Nc7 24. Kf2 Rab8 25. Ke3 Na8 26. Nc2 Nb6
27. Rd4 Bc6 28. Bf3 Bxf3 29. Kxf3 Rxd4 30. Rxd4 Rd8 31. Rb4
Nd5 32. Nxd5+ Rxd5 33. Ne3 Rd2 34. Rb5 b6 35. Rxb6 Kd7 36. Nc4
Rxh2 37. Rb5 Kc6 38. Rb8 f6 39. Rg8 Kb5 40. Nd6+ Kc6 41. Rc8+
Kd5 42. Rd8 Kc6 1/2-1/2

[Event "Cambridge A"]
[Site "1"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "George Steven Botterill"]
[ECO "D91"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "112"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Nf3 Bg7 5.Bg5 Ne4 6.cxd5 Nxg5
7.Nxg5 e6 8.Nf3 exd5 9.e3 O-O 10.Be2 Qd6 11.O-O c6 12.a3 Be6
13.Na4 Nd7 14.b4 Rfc8 15.Nc5 b6 16.Na6 c5 17.bxc5 bxc5 18.Qa4
c4 19.Rfb1 Rc6 20.Nb4 Rb6 21.Ne1 a5 22.Na2 Bf8 23.Nc3 Rxb1
24.Nxb1 Qb6 25.Qc2 Rb8 26.Nc3 Qc6 27.Bd1 Nb6 28.Qc1 Bd7 29.g3
Bd6 30.Nf3 Bf5 31.Ne1 h5 32.Bf3 Kg7 33.h4 Rd8 34.Ng2 Bg4
35.Bxg4 hxg4 36.Qc2 Rb8 37.e4 dxe4 38.Nxe4 Re8 39.Nxd6 Qxd6
40.Qc3 Rc8 41.Ne3 Nd5 42.Nxd5 Qxd5 43.Re1 Rb8 44.Rc1 Re8
45.Qd2 Re4 46.Rd1 f5 47.Qg5 c3 48.h5 Re6 49.hxg6 c2 50.Rf1 Re8
51.Qf4 Rh8 52.f3 gxf3 53.Qc7+ Kxg6 54.Rf2 Qxd4 55.Qc6+ Kg5
56.Qxc2 Qa1+ 0-1

[Event "Cambridge A"]
[Site "2"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "William Hartston"]
[Black "Jan Hein Donner"]
[ECO "B99"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "107"]

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.Be2 b5 11.e5 Bb7 12.Qg3 dxe5
13.fxe5 Qxe5 14.Bf4 Qc5 15.Be3 Qe5 16.Bf4 Qc5 17.Be3 Qc8
18.Rhf1 O-O 19.Bf3 Nc5 20.Nb3 Nfe4 21.Nxe4 Nxe4 22.Qe1 f5
23.Nd2 Bd5 24.Bxe4 fxe4 25.Rxf8+ Qxf8 26.Qg3 Bf6 27.Rf1 Qe7
28.Qg4 Rf8 29.Kb1 Qb4 30.Nb3 Qc4 31.Re1 a5 32.Qe2 Qxe2 33.Rxe2
a4 34.Nd2 Be5 35.g3 Rf5 36.a3 h5 37.Kc1 g5 38.Rf2 g4 39.c3 h4
40.Rg2 hxg3 41.hxg3 Rh5 42.Nf1 Bc4 43.Nh2 Rh3 44.Nxg4 Rxg3
45.Rxg3 Bxg3 46.Nf6+ Kf7 47.Nxe4 Bc7 48.Kd2 Kg6 49.Nf2 Kf5
50.Nd1 Ke4 51.Bc5 Kd5 52.Ba7 Bf4+ 53.Ne3+ Kc6 54.Bd4 1/2-1/2

[Event "Cambridge A"]
[Site "3"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Raymond Keene"]
[ECO "A56"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "96"]

1.d4 Nf6 2.c4 c5 3.d5 e5 4.Nc3 d6 5.e4 Nbd7 6.Nf3 Be7 7.Bd3
Nf8 8.h3 h5 9.g3 Ng6 10.h4 Bd7 11.a3 a6 12.Ng5 Rb8 13.Qe2 Qc7
14.Kf1 Nh7 15.Nh3 Qc8 16.Kg2 Bxh4 17.gxh4 Nxh4+ 18.Kg3 Bg4
19.Qf1 Bf3 20.Rg1 Bg2 21.Qxg2 Nxg2 22.Kxg2 Nf6 23.f3 Kf8
24.Bd2 g6 25.Ng5 Kg7 26.Bf1 h4 27.a4 Nh5 28.Ne2 Qd8 29.Kf2 Qb6
30.Bc3 Qb3 31.a5 b5 32.axb6 Rxb6 33.f4 Re8 34.fxe5 dxe5 35.Nf3
Rf6 36.Ke3 h3 37.Bxh3 Kg8 38.Rg5 Rxf3+ 39.Kxf3 Qxc4 40.Rd1 Nf6
41.Ng3 Nh7 42.Rg4 Qb3 43.Rd2 a5 44.Bf1 a4 45.Rd3 Qc2 46.Nf5 c4
47.Re3 Qd1+ 48.Be2 Qh1+ 1-0

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "3"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Dragoljub Velimirovic"]
[ECO "A77"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "85"]

1.d4 Nf6 2.c4 c5 3.d5 g6 4.Nc3 Bg7 5.e4 O-O 6.Be2 d6 7.Nf3 e6
8.O-O exd5 9.cxd5 Re8 10.Nd2 a6 11.a4 Nbd7 12.Re1 Rb8 13.Bf1
Ne5 14.f4 Neg4 15.Nf3 c4 16.a5 Qc7 17.e5 Qc5+ 18.Qd4 Qxd4+
19.Nxd4 dxe5 20.fxe5 Nh5 21.Nf3 Nxe5 22.Nxe5 Bxe5 23.Be3 Bd7
24.Bxc4 Rbc8 25.Ba2 Rxc3 26.bxc3 Bxc3 27.Bf2 Rxe1+ 28.Rxe1
Bxe1 29.Bxe1 Nf6 30.Kf2 Bf5 31.Ke3 Be4 32.Kd4 Bxg2 33.Ke5 Kg7
34.Kd6 Kf8 35.Bb3 g5 36.Bg3 Ke8 37.Be5 Nd7 38.Ba4 Bh3 39.Bf6
h6 40.Kc7 Bf5 41.Kxb7 Kf8 42.Bxd7 Bxd7 43.Kxa6 1-0

[Event "Capablanca mem"]
[Site "Havana"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "12"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Georgi P Tringov"]
[ECO "E73"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "46"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 h6 7.Be3 c5
8.d5 e6 9.Nf3 exd5 10.cxd5 Re8 11.Nd2 b6 12.O-O Ba6 13.a4 Bxe2
14.Qxe2 a6 15.f3 Nbd7 16.Nc4 Ne5 17.Nxe5 Rxe5 18.Qd2 Kh7
19.Rab1 Re8 20.b4 Nd7 21.bxc5 bxc5 22.Ne2 Qc7 23.Qc2 Rab8
1/2-1/2

[Event "IBM"]
[Site "Amsterdam"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "12"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Svetozar Gligoric"]
[ECO "E73"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "32"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 h6 7.Be3 c5
8.d5 e6 9.dxe6 Bxe6 10.Qd2 Kh7 11.h3 Nc6 12.Nf3 Qe7 13.O-O
Rad8 14.Rad1 Rfe8 15.Rfe1 Qf8 16.Bf4 Nd4 1/2-1/2

[Event "FRG-ch int"]
[Site "Berlin West"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Svetozar Gligoric"]
[Black "Jan Hein Donner"]
[ECO "E97"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "87"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 O-O 5.Be2 d6 6.Nf3 e5 7.O-O
Nc6 8.d5 Ne7 9.b4 a5 10.bxa5 Rxa5 11.Nd2 Nd7 12.Nb3 Ra8 13.a4
f5 14.f3 f4 15.Ba3 g5 16.c5 Nf6 17.cxd6 cxd6 18.Nd2 Ng6 19.Nc4
Ne8 20.Qb3 Rf7 21.Qb6 Bf6 22.Qxd8 Bxd8 23.Rfb1 Ra6 24.Bb4 Bd7
25.a5 Ne7 26.Ba3 Bxa5 27.Nxa5 Rxa5 28.Rxb7 Nc8 29.Rbb1 h5
30.Bb4 Rxa1 31.Rxa1 g4 32.Ra8 Rf8 33.Rb8 gxf3 34.gxf3 Kf7
35.Rb7 Nf6 36.Nb5 Ke7 37.Na3 Rg8+ 38.Kf2 Kd8 39.Nc4 Rg6 40.Bf1
Nh7 41.Ba5+ Ke8 42.Rxd7 Kxd7 43.Bh3+ Ke7 44.Bxc8 1-0

[Event "IBM"]
[Site "Amsterdam"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "3"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Milko Bobotsov"]
[ECO "E41"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "80"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 O-O 6.Nf3 b6 7.O-O
Bb7 8.Bd2 d6 9.Qe2 Bxc3 10.Bxc3 Ne4 11.Be1 Qe7 12.Nd2 f5 13.f3
Nxd2 14.Bxd2 e5 15.dxe5 dxe5 16.Bc3 Nc6 17.a3 Rad8 18.Bc2 g6
19.Rae1 Rd7 20.Qf2 Qf7 21.Ba4 Qxc4 22.Bxc6 Bxc6 23.Bxe5 Qe6
24.Qg3 Re8 25.Bf4 Bb5 26.Rf2 Red8 27.h4 Rd1 28.Rxd1 Rxd1+
29.Kh2 Rd7 30.h5 Kf7 31.Be5 Ke8 32.e4 Kd8 33.Qf4 Bd3 34.exf5
Qxf5 35.Bf6+ Kc8 36.Qxf5 Bxf5 37.h6 Bd3 38.g4 Kb7 39.Kg3 b5
40.Kf4 Kc6 1/2-1/2

[Event "Palma de Mallorca"]
[Site "Palma de Mallorca"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "9"]
[Result "1/2-1/2"]
[White "Bent Larsen"]
[Black "Jan Hein Donner"]
[ECO "A01"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "112"]

1.b3 d5 2.Bb2 c5 3.e3 Nf6 4.Nf3 g6 5.Bb5+ Bd7 6.Qe2 Bg7
7.Bxd7+ Nbxd7 8.c4 O-O 9.O-O Rc8 10.Rd1 Re8 11.d3 e5 12.cxd5
Nxd5 13.Nbd2 Nb8 14.a3 Nc6 15.Rac1 b6 16.Nc4 Qd7 17.Rc2 Rcd8
18.Qf1 Qe7 19.h3 Rd7 20.e4 Nc7 21.Ne3 Nd4 22.Nxd4 exd4 23.Nc4
Qe6 24.a4 f5 25.Re1 Nd5 26.Rcc1 Rde7 27.e5 f4 28.a5 Qd7
29.axb6 axb6 30.b4 Nxb4 31.Nxb6 Qf5 32.Re4 f3 33.Rxc5 fxg2
34.Kxg2 Rxe5 35.Rcxe5 Rxe5 36.Rxd4 Nc6 37.Rd7 Re7 38.Rxe7 Qg5+
39.Kh1 Qxe7 40.Qc1 Qe6 41.Qc4 Qxc4 42.Nxc4 Nb4 43.Bxg7 Kxg7
44.d4 Kf6 45.Kg2 Nc6 46.d5 Ne5 47.Ne3 Nd3 48.Ng4+ Kf5 49.Kg3
h5 50.Ne3+ Ke5 51.f3 g5 52.h4 gxh4+ 53.Kxh4 Kf4 54.d6 Nc5
55.Nc4 Kxf3 56.Ne5+ Ke4 1/2-1/2

[Event "Championship Netherlands"]
[Site "Leeuwarden"]
[Date "1971.??.??"]
[EventDate "1971.??.??"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Tim Krabbe"]
[ECO "A40"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "47"]

1.d4 Nc6 2.Nf3 e6 3.c4 Nf6 4.Nc3 d5 5.Bg5 Be7 6.e3 Ne4 7.Bxe7
Qxe7 8.Qb3 dxc4 9.Bxc4 Nd6 10.Bd3 O-O 11.O-O b6 12.e4 Bb7
13.Rad1 Rac8 14.e5 Nf5 15.Be4 Na5 16.Qc2 Bxe4 17.Nxe4 Rfd8
18.g4 Nh4 19.Nfg5 Ng6 20.f4 h6 21.f5 exf5 22.gxf5 hxg5 23.fxg6
fxg6 24.b4 1-0

[Event "FRG-ch int"]
[Site "Berlin West"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Gunther Capelan"]
[ECO "E07"]
[WhiteElo "2500"]
[BlackElo "?"]
[PlyCount "82"]

1. d4 d5 2. c4 e6 3. Nc3 c6 4. Nf3 Nf6 5. Qd3 Nbd7 6. g3 Be7
7. Bg2 O-O 8. O-O b6 9. b3 Ba6 10. Bb2 Rc8 11. Rac1 Qc7 12. e4
dxe4 13. Nxe4 Nxe4 14. Qxe4 Nf6 15. Qe2 Nd7 16. Rfd1 Bf6
17. Rc2 Rcd8 18. Rcd2 Qc8 19. Ne1 Bb7 20. Nd3 Ba8 21. Ba3 Rfe8
22. Ne5 Qa6 23. Bd6 Qc8 24. b4 c5 25. Bxa8 Qxa8 26. dxc5 Nxe5
27. Bxe5 Rxd2 28. Rxd2 bxc5 29. Bxf6 gxf6 30. bxc5 Qc6
31. Qg4+ Kf8 32. Qf4 Kg7 33. Qd6 Qe4 34. Rd4 Qe1+ 35. Kg2 f5
36. c6 e5 37. Rh4 Re6 38. Qxe6 fxe6 39. c7 f4 40. c8=Q f3+
41. Kxf3 Qh1+ 1-0

[Event "FRG-ch int"]
[Site "Berlin West"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Mato Damjanovic"]
[ECO "E41"]
[WhiteElo "2500"]
[BlackElo "2305"]
[PlyCount "83"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 Bxc3+
7. bxc3 d6 8. e4 e5 9. d5 Ne7 10. Nh4 h6 11. f3 Qa5 12. Bd2 g5
13. Nf5 Bxf5 14. exf5 O-O-O 15. g4 Rde8 16. Kf2 e4 17. fxe4 h5
18. gxh5 Rxh5 19. Qf3 Reh8 20. h3 Nd7 21. Qg3 Ne5 22. Be2 Qa4
23. Bxg5 f6 24. Bxf6 Rg8 25. Qf4 Qc2 26. Bxe5 dxe5 27. Qe3 Rh4
28. Rac1 Qxa2 29. Ra1 Qc2 30. Rac1 Qxe4 31. Bg4 Rhxg4 32. hxg4
Qxg4 33. Rcg1 Qxf5+ 34. Ke1 Qb1+ 35. Kd2 Qa2+ 36. Kd3 Re8
37. Qxc5+ Kb8 38. Qd6+ Kc8 39. Qe6+ Kd8 40. Qxe5 Nf5 41. Qb8+
Ke7 42. Rh7+ 1-0

[Event "FRG-ch int"]
[Site "Berlin West"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Mathias Gerusel"]
[ECO "D17"]
[WhiteElo "2500"]
[BlackElo "2440"]
[PlyCount "54"]

1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. Nf3 dxc4 5. a4 Bf5 6. Ne5 e6
7. f3 Bb4 8. e4 Bxe4 9. fxe4 Nxe4 10. Bd2 Qxd4 11. Nxe4 Qxe4+
12. Qe2 Bxd2+ 13. Kxd2 Qd5+ 14. Kc2 Na6 15. Nxc4 Rd8 16. Qf3
Nb4+ 17. Kb3 Qc5 18. Qc3 Nd5 19. Qxg7 Qb4+ 20. Kc2 Rf8 21. Qe5
Rg8 22. Qe1 Rxg2+ 23. Bxg2 Qxc4+ 24. Kb1 Qd3+ 25. Ka2 Qc4+
26. Kb1 Qd3+ 27. Ka2 Qc4+ 1/2-1/2

[Event "FRG-ch int"]
[Site "Berlin West"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Werner Hug"]
[ECO "A75"]
[WhiteElo "2500"]
[BlackElo "2475"]
[PlyCount "89"]

1. d4 Nf6 2. c4 c5 3. d5 g6 4. Nc3 d6 5. e4 Bg7 6. Be2 O-O
7. Nf3 e6 8. O-O exd5 9. cxd5 a6 10. a4 Bg4 11. Nd2 Bxe2
12. Qxe2 Re8 13. Nc4 Qe7 14. Bf4 Nxe4 15. Rae1 Bxc3 16. bxc3
Qd8 17. Qf3 f5 18. a5 Nd7 19. Nxd6 Nxd6 20. Bxd6 Qxa5 21. Be7
Qc7 22. Qe2 Kg7 23. Qe6 h5 24. Re3 f4 25. Re4 Rf8 26. Bd6 Qd8
27. Bxf8+ Nxf8 28. Qe7+ Qxe7 29. Rxe7+ Kf6 30. Rxb7 Rd8
31. Rd1 Rd6 32. Rc7 Nd7 33. Rc6 Ke5 34. c4 Rf6 35. f3 g5
36. Kf2 a5 37. Ke2 Rf8 38. Ra6 Rb8 39. Rxa5 Rb4 40. Kd3 Kf5
41. Kc3 g4 42. Rxc5 gxf3 43. gxf3 Ra4 44. Rb5 Ne5 45. d6 1-0

[Event "FRG-ch int"]
[Site "Berlin West"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Aleksandar Matanovic"]
[ECO "E54"]
[WhiteElo "2500"]
[BlackElo "2500"]
[PlyCount "32"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5
7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Bd3 cxd4 11. exd4 Bb6
12. Be3 Nd5 13. Qc2 h6 14. Nxd5 exd5 15. Qd2 Qf6 16. Rfe1 Bc7
1/2-1/2

[Event "FRG-ch int"]
[Site "Berlin West"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Bruno Parma"]
[ECO "E54"]
[WhiteElo "2500"]
[BlackElo "2530"]
[PlyCount "46"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 d5
7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6 11. Ne4 b5
12. Nxf6+ Qxf6 13. Qe4 Bb7 14. Bd3 g6 15. dxc5 Nb4 16. Qe5
Qxe5 17. Nxe5 Nxd3 18. Nxd3 Rfd8 19. Ne5 Bc7 20. Nf3 a5
21. Nd4 Be5 22. c6 Bc8 23. Rd1 Rd6 1/2-1/2

[Event "FRG-ch int"]
[Site "Berlin West"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Heikki M J Westerinen"]
[ECO "E92"]
[WhiteElo "2500"]
[BlackElo "2420"]
[PlyCount "81"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. Be2 d6 6. Nf3 e5
7. Be3 Qe7 8. d5 Nh5 9. Nd2 Nf4 10. Bf1 f5 11. g3 fxe4
12. Ndxe4 Bf5 13. Qd2 Bg4 14. gxf4 Bf3 15. fxe5 Bxh1 16. e6
Nd7 17. Bg5 Nf6 18. Ng3 Bf3 19. Qd3 h6 20. Bh4 g5 21. Nf5 Qd8
22. Qxf3 gxh4 23. Be2 Re8 24. Qg2 Re7 25. O-O-O Kh8 26. Rg1
Qf8 27. Nxh4 Kg8 28. Nf5 Kh8 29. Bd3 Ng8 30. Qg6 Be5 31. Ne2
Qf6 32. Nxe7 Qxe7 33. f4 Bf6 34. Ng3 Qg7 35. Nh5 Bxb2+ 36. Kb1
Qxg6 37. Rxg6 Bd4 38. f5 Rf8 39. f6 Rxf6 40. e7 Nxe7 41. Rxf6
1-0

[Event "FRG-ch int"]
[Site "Berlin West"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Hans-Joachim Hecht"]
[Black "Jan Hein Donner"]
[ECO "B99"]
[WhiteElo "2428"]
[BlackElo "2500"]
[PlyCount "112"]

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. g6 hxg6 15. fxg6 fxg6 16. a3 Rb8
17. Qg3 O-O 18. Bh3 b4 19. axb4 Rxb4 20. Qxg6 Bf6 21. e5 dxe5
22. Nde2 e4 23. Rhg1 Qe5 24. Rdf1 Bd7 25. Rxf6 Qxf6 26. Qg3
Bb5 27. Qd6 Bxe2 28. Qxc5 Rfb8 29. Nxe2 Qh6+ 30. Qg5 Qxg5+
31. Rxg5 Rxb2 32. Bxe6+ Kf8 33. Rf5+ Ke7 34. Bc4 Rb1+ 35. Kd2
Rh8 36. Re5+ Kd6 37. Rxe4 Rxh2 38. Bxa6 Rg1 39. Bd3 Rg5
40. Rd4+ Rd5 41. Rxd5+ Kxd5 42. c4+ Kc5 43. Kc3 g5 44. Ng3 g4
45. Ne4+ Kc6 46. Kd4 Rh4 47. Ng3 Rh3 48. Be4+ Kc7 49. Nf5 Ra3
50. Bd3 Kb6 51. Ng3 Kc7 52. Nf5 Kb6 53. Ne3 g3 54. Nd5+ Ka5
55. Nf4 Ra2 56. Be4 Kb4 1/2-1/2

[Event "FRG-ch int"]
[Site "Berlin West"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Raymond Keene"]
[Black "Jan Hein Donner"]
[ECO "A49"]
[WhiteElo "2510"]
[BlackElo "2500"]
[PlyCount "43"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 d6 5. b3 O-O 6. Bb2 e5
7. dxe5 Nfd7 8. c4 dxe5 9. Nc3 Re8 10. Nd2 c6 11. Nde4 Qc7
12. Nd6 Rd8 13. Nxc8 Qxc8 14. O-O Nc5 15. Qc2 Nba6 16. Rad1
Nb4 17. Qb1 a5 18. a3 Nba6 19. Ba1 Ne6 20. b4 axb4 21. axb4
Qc7 22. h4 1/2-1/2

[Event "FRG-ch int"]
[Site "Berlin West"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Wolfgang Unzicker"]
[Black "Jan Hein Donner"]
[ECO "B92"]
[WhiteElo "2545"]
[BlackElo "2500"]
[PlyCount "45"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be2 e5
7. Nb3 Qc7 8. O-O Be7 9. Be3 O-O 10. a4 Be6 11. a5 Nbd7
12. Nd5 Nxd5 13. exd5 Bf5 14. c4 Bg6 15. Nd2 f5 16. f3 Qd8
17. b4 Bg5 18. Qb3 Bxe3+ 19. Qxe3 Qe7 20. Bd3 Rae8 21. Rae1
Nf6 22. Bb1 Qd7 23. Qa3 1/2-1/2

[Event "FRG-ch int"]
[Site "Berlin West"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Rudolf Teschner"]
[Black "Jan Hein Donner"]
[ECO "B10"]
[WhiteElo "2295"]
[BlackElo "2500"]
[PlyCount "80"]

1. e4 c6 2. Nf3 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ exf6
6. Bc4 Bd6 7. Qe2+ Be7 8. O-O O-O 9. Re1 Bd6 10. d4 Nd7
11. Bd3 Nb6 12. Nh4 Qc7 13. g3 Be6 14. Nf5 Bxf5 15. Bxf5 c5
16. dxc5 Qxc5 17. Bd3 Qc7 18. Bd2 Nd7 19. c4 Be5 20. Rab1 Rfe8
21. b4 Nf8 22. Be3 g6 23. c5 f5 24. Bb5 Re7 25. Bf4 f6 26. Be3
Kg7 27. Rbd1 g5 28. Bd4 Ng6 29. Bxe5 Nxe5 30. f4 gxf4 31. gxf4
Ng6 32. Qxe7+ Nxe7 33. Rd7 Qxf4 34. Rexe7+ Kg8 35. Rg7+ Kh8
36. Rxh7+ Kg8 37. Rhg7+ Kh8 38. Rh7+ Kg8 39. Rdg7+ Kf8
40. Rf7+ Kg8 1/2-1/2

[Event "FRG-ch int"]
[Site "Berlin West"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Karl Josef Schiffer"]
[Black "Jan Hein Donner"]
[ECO "A06"]
[WhiteElo "2350"]
[BlackElo "2500"]
[PlyCount "80"]

1. Nf3 d5 2. b3 Bg4 3. Bb2 Nd7 4. g3 Ngf6 5. Bg2 e6 6. O-O Bd6
7. d3 O-O 8. Nbd2 c6 9. Qe1 e5 10. e4 Re8 11. h3 Bh5 12. a3
Nc5 13. Nh4 dxe4 14. dxe4 Nfd7 15. Nf5 Bf8 16. g4 Bg6 17. Nc4
Qc7 18. Qc3 f6 19. Rad1 b5 20. Na5 Rac8 21. Bc1 Red8 22. Rfe1
Ne6 23. Bf1 a6 24. Bg2 Bf7 25. Bd2 Nb6 26. Be3 c5 27. Rxd8
Rxd8 28. Qb2 Nd4 29. c3 Ne6 30. b4 Na4 31. Qc1 Rd3 32. Bd2 Qd7
33. Be3 Rxc3 34. Qa1 cxb4 35. axb4 Bxb4 36. Rd1 Qc7 37. Bd2
Bxa5 38. Bxc3 Nxc3 39. Rf1 Nf4 40. Bf3 Bc4 0-1

[Event "FRG-ch int"]
[Site "Berlin West"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Juergen Dueball"]
[Black "Jan Hein Donner"]
[ECO "B99"]
[WhiteElo "2455"]
[BlackElo "2500"]
[PlyCount "37"]

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. Be2 b5 11. Bxf6 Nxf6
12. e5 Bb7 13. exf6 Bxf3 14. Bxf3 Bxf6 15. Bxa8 Bxd4 16. Rxd4
d5 17. Bxd5 exd5 18. Re1+ Kf8 19. Re5 1/2-1/2

[Event "Team Match"]
[Site "London"]
[Date "1971.10.31"]
[EventDate "1971.10.30"]
[Round "2"]
[Result "0-1"]
[White "Raymond Keene"]
[Black "Jan Hein Donner"]
[ECO "E04"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "39"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.g3 dxc4 5.Bg2 Nbd7 6.Qa4 a6 7.Qxc4
c5 8.Qc2 b6 9.O-O Bb7 10.Nc3 b5 11.Bg5 Rc8 12.dxc5 Bxc5 13.a3
h6 14.Bd2 O-O 15.Rfd1 Qe7 16.Ne1 Nb6 17.Nd3 Bd6 18.Qb3 Bxg2
19.Kxg2 Nc4 20.a4 0-1

[Event "Palma de Mallorca"]
[Site "Palma de Mallorca"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "13"]
[Result "1-0"]
[White "Oscar Panno"]
[Black "Jan Hein Donner"]
[ECO "A09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "87"]

1.Nf3 d5 2.c4 c6 3.e3 Nf6 4.b3 Bg4 5.Bb2 e6 6.Be2 Nbd7 7.d3
Bd6 8.Nbd2 O-O 9.h3 Bxf3 10.Bxf3 Qe7 11.a3 b5 12.O-O bxc4
13.bxc4 Rab8 14.Qc2 Rb7 15.Rfb1 Rfb8 16.Be2 e5 17.d4 exd4
18.Bxd4 Rxb1+ 19.Rxb1 Rxb1+ 20.Nxb1 Bxa3 21.cxd5 cxd5 22.Nxa3
Qxa3 23.Qc8+ Qf8 24.Qxf8+ Kxf8 25.Bxa7 h5 26.Kf1 Ke7 27.Bd4 g6
28.Bb5 Ne4 29.f3 Nec5 30.Kf2 Ne6 31.Bc3 Nc7 32.Ba4 Ke6 33.Bb4
Ne8 34.Ke2 Nd6 35.Bb3 f5 36.h4 Ne5 37.Bc5 Nd7 38.Bd4 Nb5
39.Bb2 Nc5 40.Bc2 Kd6 41.g4 hxg4 42.fxg4 Ke6 43.h5 Nc7 44.hxg6
1-0

[Event "Palma de Mallorca"]
[Site "Palma de Mallorca"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Arturo Pomar-Salamanca"]
[ECO "B14"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "35"]

1.c4 c6 2.e4 d5 3.exd5 cxd5 4.d4 Nf6 5.Nc3 e6 6.Nf3 Be7 7.cxd5
Nxd5 8.Bd3 Nc6 9.O-O O-O 10.Re1 Bd7 11.a3 Bf6 12.Be4 Nce7
13.Qd3 g6 14.Ne5 Bc6 15.Bd2 Nxc3 16.Nxc6 Ne2+ 17.Rxe2 Nxc6
18.Bxc6 1/2-1/2

[Event "Palma de Mallorca"]
[Site "Palma de Mallorca"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "6"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Lajos Portisch"]
[ECO "A77"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "38"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.e4
Bg7 8.Be2 O-O 9.O-O Re8 10.Nd2 Nbd7 11.h3 a6 12.a4 h5 13.Re1
Nh7 14.Bf1 Rb8 15.a5 Qe7 16.Nc4 Ne5 17.Nb6 Nd7 18.Nc4 Ne5
19.Nb6 Nd7 1/2-1/2

[Event "Palma de Mallorca"]
[Site "Palma de Mallorca"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1/2-1/2"]
[White "Stefano Tatai"]
[Black "Jan Hein Donner"]
[ECO "E73"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "186"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 O-O 5.Be2 d6 6.Bg5 h6 7.Be3 c5
8.d5 e6 9.h3 exd5 10.exd5 Re8 11.Bd3 Nbd7 12.Nf3 a6 13.a4 Qb6
14.Qc2 Qc7 15.O-O b6 16.Rfe1 Nf8 17.Qd2 Kh7 18.Bf4 Bd7 19.Bh2
Rad8 20.Rxe8 Nxe8 21.Re1 Bc8 22.Re2 Nf6 23.Qe1 Kg8 24.b3 N8d7
25.Bf4 Kf8 26.a5 bxa5 27.Na4 Re8 28.Bd2 Rxe2 29.Bxe2 Qb8
30.Bd1 Nb6 31.Nxb6 Qxb6 32.Bxa5 Qb7 33.Bc2 Qe7 34.Qxe7+ Kxe7
35.g4 h5 36.g5 Nd7 37.Kg2 Bb2 38.Bd2 Nf8 39.Nh4 Ba1 40.Kg3 Bb2
41.f4 f5 42.gxf6+ Kxf6 43.Ba5 Kf7 44.Bc7 Bc3 45.Kg2 Bf6 46.Nf3
Ke7 47.Kg3 Bd7 48.Nh4 Be8 49.Ba5 Kf7 50.Bd2 Bd7 51.b4 cxb4
52.Bxb4 Be7 53.Nf3 Nh7 54.h4 Bf5 55.Bxf5 gxf5 56.Nd4 Kg6
57.Nc6 Kf7 58.Nb8 Nf6 59.Nxa6 Ne4+ 60.Kh3 Nf2+ 61.Kg2 Ne4
62.Be1 Bd8 63.Nb4 Ba5 64.Kf1 Bb6 65.Nc2 Ke7 66.Ke2 Bc5 67.Ne3
Kf6 68.Nf1 Bg1 69.Ne3 Kg6 70.Bb4 Kf6 71.Ba3 Kg6 72.Bc1 Bf2
73.Ng2 Kf7 74.Be3 Bg3 75.Bg1 Kg6 76.Kf3 Kf7 77.c5 dxc5 78.Bxc5
Bxh4 79.Nxh4 Nxc5 80.Nxf5 Kf6 81.Nh4 Ke7 82.Nf5+ Kf6 83.Nd6
Nd7 84.Ne4+ Kg6 85.Kg3 Kf5 86.Nd6+ Kf6 87.Nc4 Kf5 88.Kf3 Nc5
89.Nd6+ Kg6 90.Nb5 Kf6 91.Nd6 Nd7 92.Nc4 Nc5 93.d6 Ke6 1/2-1/2

[Event "Palma de Mallorca"]
[Site "Palma de Mallorca"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "11"]
[Result "1/2-1/2"]
[White "Samuel Reshevsky"]
[Black "Jan Hein Donner"]
[ECO "E41"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "28"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 Nc6 6.Ne2 d5 7.cxd5
exd5 8.O-O O-O 9.a3 cxd4 10.exd4 Bd6 11.h3 h6 12.Bc2 Re8
13.Qd3 Bf8 14.Be3 g6 1/2-1/2

[Event "FRG-NED"]
[Site "Hitzacker FRG"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "2.1"]
[Result "1-0"]
[White "Wolfgang Unzicker"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "39"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.e5 dxe5 7.fxe5
Nd5 8.Bc4 Be6 9.Nxd5 Bxd5 10.Bxd5 Qxd5 11.Qe2 Qa5+ 12.Bd2 Qb6
13.O-O Qxb2 14.Qc4 Qb6 15.Rab1 Qc6 16.Qb3 Nd7 17.Ng5 e6 18.Bb4
Rfe8 19.Rxf7 h6 20.Qd3 1-0

[Event "FRG-NED"]
[Site "Hitzacker FRG"]
[Date "1971.??.??"]
[EventDate "?"]
[Round "1.1"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Wolfgang Unzicker"]
[ECO "E55"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "104"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 c5 7.O-O
dxc4 8.Bxc4 Nbd7 9.Bd3 a6 10.a3 Ba5 11.Ne4 Nxe4 12.Bxe4 Nf6
13.Bc2 cxd4 14.exd4 h6 15.Ne5 Bd7 16.Nxd7 Qxd7 17.Bf4 Bb6
18.Be5 Rfd8 19.Qe2 Rac8 20.Rad1 Qb5 21.Bd3 Qa4 22.Qf3 Bxd4
23.b3 Qxa3 24.Bxd4 Rxd4 25.Bh7+ Kxh7 26.Rxd4 Qe7 27.Qd3+ Kg8
28.Rc4 Rd8 29.Qc2 Nd5 30.Rc8 Rxc8 31.Qxc8+ Kh7 32.g3 a5 33.Rc1
Qa3 34.Qc2+ Kg8 35.Qd1 Qf8 36.Rc4 g6 37.Qc2 Kh7 38.Rc8 Qg7
39.Rb8 b6 40.Qc8 h5 41.h4 Kh6 42.Qe8 Nf6 43.Qd8 Nd5 44.Rb7 g5
45.hxg5+ Kg6 46.Kh2 h4 47.Rb8 hxg3+ 48.fxg3 Kf5 49.Qg8 Qb2+
50.Kh3 Nf4+ 51.gxf4 Qc3+ 52.Kh4 Qe1+ 1/2-1/2

[Event "Wijk aan Zee"]
[Site "Wijk aan Zee"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "9"]
[Result "1/2-1/2"]
[White "Andras Adorjan"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "24"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.e5 Nfd7 7.Bc4
Nb6 8.Bb3 Nc6 9.O-O Na5 10.Qe2 Nxb3 11.axb3 c6 12.h3 Be6
1/2-1/2

[Event "Amsterdam (Netherlands)"]
[Site "Amsterdam (Netherlands)"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Walter Shawn Browne"]
[ECO "A75"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "114"]

1.d4 c5 2.d5 Nf6 3.c4 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.e4
Bg7 8.Be2 O-O 9.O-O a6 10.a4 Bg4 11.Nd2 Bxe2 12.Qxe2 Nbd7
13.Nc4 Nb6 14.Ne3 Qe7 15.a5 Nbd7 16.Nc4 Ne5 17.Nb6 Rae8 18.Bg5
Qc7 19.f3 h6 20.Bd2 Ned7 21.Nc4 Ne5 22.Ne3 Nh5 23.g3 Nf6
24.Kg2 Re7 25.Na4 Qd7 26.Nc3 Rb8 27.Rfe1 Qc7 28.f4 Ned7 29.Qd3
b5 30.axb6 Nxb6 31.Rxa6 c4 32.Qc2 Rbe8 33.e5 dxe5 34.fxe5 Rxe5
35.Rxb6 Qxb6 36.Nxc4 Qd4 37.Nxe5 Rxe5 38.Rxe5 Qxe5 39.Qd3 Nd7
40.Bf4 Qe1 41.Qe3 Qxe3 42.Bxe3 Kf8 43.Ne4 Bxb2 44.Bxh6+ Ke7
45.Bg5+ f6 46.Be3 Be5 47.Kf3 f5 48.Nc5 Nf6 49.Nd3 Kd6 50.Bf4
Bxf4 51.Kxf4 Nxd5+ 52.Kg5 Ne3 53.Ne1 Kd5 54.Nf3 Ke4 55.Nd2+
Kd3 56.Nf3 Ke4 57.Nd2+ Kd3 1/2-1/2

[Event "Skopje"]
[Site "Skopje"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Vlastimil Hort"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "83"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nc6 7.e5
dxe5 8.dxe5 Nd5 9.Bd2 Nxc3 10.Bxc3 Bf5 11.Bxf5 Qxd1+ 12.Rxd1
gxf5 13.Rd7 Rac8 14.h3 f6 15.e6 Rfd8 16.Rxd8+ Nxd8 17.Nd4 Bf8
18.b4 c5 19.bxc5 Rxc5 20.Kd2 Rd5 21.Kc1 h5 22.h4 Bh6 23.g3 Kf8
24.Rd1 Ke8 25.a4 Bf8 26.Rd3 Rd6 27.Re3 Ra6 28.a5 Nc6 29.Nxc6
Rxc6 30.Kb2 Kd8 31.Kb3 Rd6 32.Bb4 Rd1 33.Rd3+ Rxd3+ 34.cxd3
Kc7 35.Kc4 a6 36.Bc5 Kd8 37.Bb6+ Kc8 38.d4 Kb8 39.d5 Bh6
40.Bc5 Bf8 41.Bd4 Kc7 42.Kc5 1-0

[Event "Wijk aan Zee"]
[Site "Wijk aan Zee"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Vlastimil Hort"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "31"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nc6 7.f5 e5
8.fxe6 fxe6 9.O-O Qe7 10.Qe1 Nd8 11.Qh4 e5 12.Ng5 h6 13.Bc4+
Kh8 14.Nf3 exd4 15.Bxh6 Be6 16.Nd5 1-0

[Event "Amsterdam IBM"]
[Site "08"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Borislav Ivkov"]
[ECO "E73"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "89"]

1.d4 g6 2.c4 Nf6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5 h6 7.Be3 c5
8.d5 b5 9.cxb5 a6 10.bxa6 Bxa6 11.Nf3 Nbd7 12.Bxa6 Rxa6 13.Nd2
Ne5 14.O-O Qa5 15.Qe2 Rb8 16.f4 Neg4 17.Nc4 Qb4 18.Bd2 Nd7
19.e5 dxe5 20.h3 Ngf6 21.fxe5 Nh5 22.Ne4 Qb5 23.a4 Rxa4
24.Rxa4 Qxa4 25.g4 Nxe5 26.Nxe5 Qd4+ 27.Rf2 Qxe5 28.gxh5 Rxb2
29.Qf3 f5 30.Ng3 c4 31.Bf4 Rxf2 32.Kxf2 Qb2+ 33.Ne2 g5 34.Bc1
Qe5 35.Bd2 e6 36.dxe6 Qxe6 37.Bc3 g4 38.hxg4 fxg4 39.Qf4 Bf8
40.Nd4 Bc5 41.Kg3 Qd7 42.Qxg4+ Qxg4+ 43.Kxg4 Kf7 44.Kf5 Bb6
45.Nf3 1-0

[Event "Wijk aan Zee"]
[Site "14"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Borislav Ivkov"]
[ECO "A42"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "38"]

1.d4 g6 2.c4 Bg7 3.Nc3 d6 4.e4 e5 5.dxe5 dxe5 6.Qxd8+ Kxd8
7.f4 Nd7 8.Nf3 c6 9.fxe5 Nxe5 10.Bf4 Nxf3+ 11.gxf3 Be6
12.O-O-O Ke8 13.Kc2 Nf6 14.b3 Rd8 15.Rxd8+ Kxd8 16.Bg2 Kc8
17.Be3 b6 18.Ne2 Re8 19.Nf4 Bd7 1/2-1/2

[Event "Amsterdam IBM"]
[Site "Amsterdam IBM"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "6"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Viktor Korchnoi"]
[ECO "E58"]
[WhiteElo "2500"]
[BlackElo "2640"]
[PlyCount "62"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5
7. O-O Nc6 8. a3 Bxc3 9. bxc3 Qc7 10. cxd5 exd5 11. Nh4 Re8
12. f3 Bd7 13. Ra2 Qa5 14. Bd2 Qb6 15. Qb1 Na5 16. Rb2 Qd6
17. Bc1 Rac8 18. Nf5 Bxf5 19. Bxf5 Rc7 20. Bd3 b6 21. Re2 Nc4
22. Qa2 b5 23. Rfe1 a5 24. e4 dxe4 25. Bxc4 bxc4 26. fxe4 Qa6
27. d5 Rb7 28. Qd2 Rd7 29. Qg5 Qb7 30. d6 h6 31. Qxc5 Rxe4
1/2-1/2

[Event "Amsterdam 13/195"]
[Site "Amsterdam 13/195"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Ljubomir Ljubojevic"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "87"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Bc4 c5 6.d5 O-O 7.Nge2 e6
8.dxe6 Bxe6 9.Bxe6 fxe6 10.O-O Nc6 11.h3 d5 12.e5 Ne8 13.a3
Nc7 14.b4 cxb4 15.axb4 Nxb4 16.Rb1 a5 17.Nd4 Qd7 18.Ba3 Rfc8
19.Bxb4 axb4 20.Rxb4 Na6 21.Rb3 Rc4 22.Ncb5 Nc5 23.Re3 Bf8
24.Kh2 Ra5 25.Nc3 b5 26.h4 b4 27.Nce2 Ne4 28.h5 Bc5 29.hxg6
hxg6 30.Rh3 Ra8 31.Rff3 Kg7 32.Qe1 Be7 33.g4 Rf8 34.f5 exf5
35.gxf5 Ng5 36.f6 Bxf6 37.exf6 Rxf6 38.Qa1 Nxf3+ 39.Rxf3 Rxf3
40.Nxf3 Kg8 41.Ned4 Qd6+ 42.Kg2 Rc8 43.Qa7 Re8 44.Qb7 1/2-1/2

[Event "Wijk aan Zee"]
[Site "01"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Ljubomir Ljubojevic"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "55"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Bc4 Nxe4 6.Bxf7+ Kxf7
7.Nxe4 Re8 8.Nf3 Kg8 9.O-O Nd7 10.c3 b6 11.Qb3+ e6 12.Nfg5 Nf8
13.Be3 h6 14.Nf3 Bb7 15.Qc2 Qe7 16.Rae1 Qf7 17.Nh4 Bf6
18.Nxf6+ Qxf6 19.Bf2 Re7 20.Re3 Rg7 21.Be1 Re8 22.Qd3 Ree7
23.Rh3 Ref7 24.Nf3 Qxf4 25.Bd2 Qf5 26.Qxf5 gxf5 27.Bxh6 Rg6
28.Bf4 1/2-1/2

[Event "Cienfuegos i 13\\544"]
[Site "Cienfuegos i 13\\544"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Igor V Platonov"]
[Black "Jan Hein Donner"]
[ECO "D37"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "63"]

1.c4 Nf6 2.Nc3 e6 3.Nf3 d5 4.d4 Be7 5.g3 O-O 6.Bg2 dxc4 7.O-O
Nbd7 8.e4 a6 9.a4 c5 10.Bf4 cxd4 11.Qxd4 Qa5 12.Qxc4 e5 13.Be3
Bb4 14.Rfd1 Bxc3 15.bxc3 Rb8 16.Nh4 b5 17.axb5 Qxb5 18.Qxb5
axb5 19.Nf5 Nb6 20.Bc5 Re8 21.Ne7+ Kh8 22.Nc6 Rb7 23.Nd8 Na4
24.Nxb7 Bxb7 25.Bb4 Bxe4 26.Bxe4 Nxe4 27.c4 Nb2 28.Rd7 Nxc4
29.Rxf7 Ned6 30.Rd7 Nf5 31.Raa7 h5 32.Rf7 1-0

[Event "Amsterdam 22/ (0.13)"]
[Site "Amsterdam 22/ (0.13)"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "59"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Lev Polugaevsky"]
[ECO "E54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "82"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 c5 6. Nf3 d5
7. O-O dxc4 8. Bxc4 Nc6 9. a3 Ba5 10. Qd3 a6 11. Ne4 b5
12. Nxf6+ Qxf6 13. Qe4 Bb7 14. Bd3 g6 15. dxc5 Rfd8 16. Be2 b4
17. Qf4 Qe7 18. Ng5 bxa3 19. bxa3 Bc7 20. Qh4 h5 21. Rb1 Rab8
22. f4 Ba8 23. Rxb8 Nxb8 24. Qg3 Nd7 25. Bxh5 Nxc5 26. Bf3
Bxf3 27. Qxf3 Nd3 28. Qc6 Qc5 29. Qxc5 Nxc5 30. Bb2 Bb6
31. Bd4 Na4 32. Bxb6 Nxb6 33. Rb1 Rd6 34. Kf2 Kg7 35. Ke2 Rc6
36. Nf3 Nd5 37. Rb3 Rc2+ 38. Nd2 a5 39. g3 a4 40. Rd3 Nc3+
41. Kf3 f5 1/2-1/2

[Event "Skopje"]
[Site "Skopje"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Lajos Portisch"]
[ECO "E41"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "44"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 Nc6 6.Nf3 Bxc3+
7.bxc3 d6 8.e4 e5 9.d5 Ne7 10.Nh4 h6 11.f3 Qa5 12.Qc2 g5
13.Nf5 Nxf5 14.exf5 Bd7 15.h4 g4 16.fxg4 Nxg4 17.Be2 Rg8
18.Bxg4 Rxg4 19.Bxh6 Bxf5 20.Qxf5 Qxc3+ 21.Kf2 Qb2+ 22.Ke3
Rxg2 0-1

[Event "Wijk aan Zee"]
[Site "Wijk aan Zee"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Lajos Portisch"]
[Black "Jan Hein Donner"]
[ECO "A42"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "51"]

1.c4 c6 2.e4 e5 3.Nf3 d6 4.d4 Nd7 5.Nc3 g6 6.Be2 Bg7 7.O-O
Ngf6 8.Re1 O-O 9.Rb1 Re8 10.Bf1 a5 11.b3 Qc7 12.d5 Nc5 13.Nd2
Bd7 14.a3 Reb8 15.b4 axb4 16.axb4 Na6 17.Na2 Rd8 18.Nb3 c5
19.b5 Nb8 20.Nc3 Be8 21.Bd2 Nbd7 22.Ra1 Rxa1 23.Qxa1 Nb6
24.Na4 Nbd7 25.Nb2 Rb8 26.Bd3 1/2-1/2

[Event "Amsterdam IBM"]
[Site "04"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Karl Robatsch"]
[Black "Jan Hein Donner"]
[ECO "B50"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "43"]

1.e4 c5 2.Nf3 d6 3.Nc3 a6 4.Be2 Nf6 5.O-O g6 6.d4 cxd4 7.Nxd4
Bg7 8.Be3 O-O 9.Qd2 Nc6 10.Rad1 Bd7 11.f3 Rc8 12.Nxc6 Bxc6
13.Rfe1 Re8 14.Bd4 Qc7 15.Bf1 b5 16.a3 Qb7 17.e5 dxe5 18.Bxe5
Nh5 19.Bxg7 Nxg7 20.Qf2 Rcd8 21.Na2 Qc7 22.c4 1/2-1/2

[Event "10, Wijk aan Zee"]
[Site "10, Wijk aan Zee"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Vasily Smyslov"]
[ECO "A29"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "108"]

1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 Bb4 5. Nd5 Bc5 6. Bg2 d6
7. O-O Nxd5 8. cxd5 Nd4 9. Nxd4 Bxd4 10. e3 Bb6 11. b4 a5
12. bxa5 Rxa5 13. Bb2 O-O 14. a4 Ra6 15. Bc3 Ba5 16. Qb3 b6
17. Rfc1 Bd7 18. Bf1 Bxc3 19. Bxa6 Bxa1 20. Rxa1 f5 21. Rc1 f4
22. exf4 exf4 23. Rc4 Qe7 24. Rxf4 Qe1+ 25. Kg2 Rxf4 26. gxf4
Qe4+ 27. Kg3 Bxa4 28. Qc3 Qg6+ 29. Kf3 Bd1+ 30. Ke3 Qe8+
31. Kd4 Qa4+ 32. Qc4 Kf7 33. Qxa4 Bxa4 34. Bd3 Bd7 35. h4 h6
36. Ke3 Kf6 37. Kd4 Be8 38. Ke3 Bg6 39. Bb5 Bf7 40. Bc6 Kf5
41. Bd7+ Kg6 42. Be6 Kf6 43. f5 Bh5 44. f4 Bg4 45. Ke4 b5
46. Bd7 b4 47. Ba4 Bxf5+ 48. Kd4 Bb1 49. Bd7 Ba2 50. Bc8 b3
51. Kc3 b2 52. Kxb2 Bxd5 53. Bh3 Be6 54. Bg2 Kg6 0-1

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Laszlo Szabo"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "121"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nc6 7.e5
dxe5 8.dxe5 Nd5 9.Bd2 Nxc3 10.Bxc3 Bf5 11.Bxf5 Qxd1+ 12.Rxd1
gxf5 13.h3 Rad8 14.Ke2 e6 15.g4 Rxd1 16.Rxd1 fxg4 17.hxg4 f6
18.exf6 Bxf6 19.Bxf6 Rxf6 20.Ke3 Rg6 21.g5 Rg7 22.Ke4 Kf8
23.a3 a5 24.Rh1 Ke7 25.Rh6 Nd8 26.Nd4 c5 27.f5 Rxg5 28.Nxe6
Nxe6 29.Rxe6+ Kf7 30.Rb6 h5 31.Rxb7+ Kf6 32.Rb6+ Kg7 33.Rc6
Rg4+ 34.Kf3 Rc4 35.c3 h4 36.Rg6+ Kf7 37.Ra6 a4 38.Rg6 Ke7
39.Rc6 Kf7 40.Rh6 Kg7 41.Rc6 Kf7 42.Kg2 Re4 43.Rxc5 Re2+
44.Kh3 Rxb2 45.Kxh4 Kf6 46.Kg4 Rg2+ 47.Kf4 Rf2+ 48.Ke4 Re2+
49.Kd4 Ra2 50.Kc4 Rxa3 51.Kb4 Ra1 52.Ra5 Rc1 53.c4 Rc2 54.Rxa4
Kxf5 55.Ra1 Ke6 56.Rd1 Rb2+ 57.Ka5 Rb8 58.c5 Ke7 59.c6 Rd8
60.Rxd8 Kxd8 61.Kb6 1-0

[Event "6, Wijk aan Zee"]
[Site "6, Wijk aan Zee"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Jan Timman"]
[ECO "D80"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "85"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Bg5 Ne4 5.Bh4 c5 6.e3 Bg7 7.Nf3
Nxc3 8.bxc3 Nc6 9.cxd5 Qxd5 10.Be2 O-O 11.O-O Bf5 12.Nd2 cxd4
13.cxd4 e5 14.Bf3 e4 15.Be2 Rac8 16.Qb3 Qd7 17.Rac1 Be6 18.Bc4
Bxc4 19.Nxc4 Rfe8 20.Bg3 Bf8 21.Rfd1 Nb4 22.Nd2 Rxc1 23.Rxc1
Nd5 24.Be5 Bg7 25.Nxe4 Bxe5 26.dxe5 Rxe5 27.Nc5 Qg4 28.Qxb7
Rg5 29.g3 h5 30.Nd7 Qf3 31.Ne5 Qf6 32.Qxd5 Rxe5 33.Qa8+ Kh7
34.Qxa7 Qf3 35.Qd4 Rd5 36.Qc4 Rd2 37.Rf1 g5 38.h3 Rd6 39.h4
Re6 40.hxg5 Re4 41.Qc6 Rxe3 42.Qh6+ Kg8 43.g6 1-0

[Event "Amsterdam IBM 02"]
[Site "Amsterdam IBM 02"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Timman"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "29"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nc6 7.e5
dxe5 8.fxe5 Nh5 9.Be3 f6 10.exf6 Nxf6 11.Bc4+ Kh8 12.Qd2 e5
13.dxe5 Qxd2+ 14.Bxd2 Ng4 15.O-O 1/2-1/2

[Event "Amsterdam IBM"]
[Site "10"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Wolfgang Uhlmann"]
[ECO "D79"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "20"]

1.d4 Nf6 2.c4 g6 3.g3 c6 4.Bg2 d5 5.cxd5 cxd5 6.Nf3 Bg7 7.O-O
O-O 8.Nc3 Nc6 9.Ne5 Nxe5 10.dxe5 Ng4 1/2-1/2

[Event "Amsterdam IBM"]
[Site "5"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Burkhard G J Malich"]
[ECO "D78"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "76"]

1.d4 Nf6 2.c4 g6 3.g3 c6 4.Bg2 d5 5.Nf3 Bg7 6.O-O O-O 7.b3 Bf5
8.Bb2 a5 9.Nbd2 Ne4 10.Re1 Nxd2 11.Qxd2 Be4 12.Rac1 e6 13.Bf1
Bxf3 14.exf3 Na6 15.f4 Nc7 16.a4 dxc4 17.bxc4 Qd7 18.Red1 Rfd8
19.Bg2 Qe7 20.d5 Bxb2 21.Qxb2 cxd5 22.Qxb7 Rab8 23.Qa7 Ra8
24.Qe3 Qd6 25.cxd5 Nxd5 26.Qc5 Qd7 27.Qc6 Qxc6 28.Rxc6 Nb4
29.Rxd8+ Rxd8 30.Rc5 Rd1+ 31.Bf1 Rd5 32.Rc8+ Kg7 33.Kg2 Rd2
34.Kf3 Ra2 35.Bb5 Ra3+ 36.Kg2 Nd5 37.h3 h5 38.h4 Ra2 1/2-1/2

[Event "Amsterdam IBM"]
[Site "7"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Nikola Padevsky"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "70"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.e5 Nfd7 7.Bc4
Nb6 8.Bb3 Nc6 9.Ne2 Na5 10.c3 Nxb3 11.axb3 f6 12.exf6 exf6
13.O-O Be6 14.Ng3 Qd7 15.Nh4 f5 16.c4 a5 17.d5 Bf7 18.Qc2 a4
19.bxa4 Nxa4 20.Ra3 b5 21.b3 Nb6 22.Rxa8 Rxa8 23.Be3 bxc4
24.bxc4 Ra3 25.Bxb6 cxb6 26.Nf3 Qc7 27.Qe2 b5 28.cxb5 Qc5+
29.Kh1 Re3 30.Qd2 Bc3 31.Qa2 Bxd5 32.Qa6 Bf6 33.b6 Rb3 34.Qa4
Qc6 35.Qa5 Rxf3 0-1

[Event "Amsterdam IBM"]
[Site "9"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Hans Ree"]
[Black "Jan Hein Donner"]
[ECO "E88"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "90"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.f3 O-O 6.Be3 e5 7.d5 c6
8.Bd3 cxd5 9.cxd5 Ne8 10.Qd2 Nd7 11.Nge2 Nc5 12.Bc2 a5 13.O-O
Bd7 14.b3 b5 15.a3 Na6 16.Bd3 Qb8 17.b4 axb4 18.axb4 Nxb4
19.Rxa8 Qxa8 20.Bxb5 Bxb5 21.Nxb5 Na6 22.Qa5 Qb7 23.Qb6 Qxb6
24.Bxb6 Nb8 25.Bd8 f5 26.Be7 Rf7 27.Bxd6 Rb7 28.Nec3 fxe4
29.fxe4 Nxd6 30.Nxd6 Rb3 31.Ndb5 Rb2 32.Ra1 Bf8 33.Kf1 Nd7
34.Ra7 Nf6 35.d6 Rd2 36.Ke1 Bh6 37.Re7 Kf8 38.Rxe5 Rxg2 39.Nd5
Bg5 40.Nbc7 Bh4+ 41.Kd1 Rxh2 42.Nxf6 Bxf6 43.d7 Kf7 44.Nd5
Rh1+ 45.Ke2 Rh2+ 1-0

[Event "Amsterdam IBM"]
[Site "11"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Robert G Hartoch"]
[Black "Jan Hein Donner"]
[ECO "A19"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "54"]

1.c4 Nf6 2.Nc3 e6 3.e4 c5 4.e5 Ng8 5.Nf3 Nc6 6.d4 cxd4 7.Nxd4
Nxe5 8.Bf4 d6 9.Qd2 Bd7 10.O-O-O Rc8 11.Kb1 a6 12.Nb3 Nxc4
13.Bxc4 Rxc4 14.Bxd6 Bxd6 15.Qxd6 Qc7 16.Na5 Qxd6 17.Rxd6 Rc7
18.Rb6 Bc8 19.Ne4 Nf6 20.Nd6+ Ke7 21.Ndxb7 Nd5 22.Rb3 e5 23.a3
Bf5+ 24.Ka1 Rhc8 25.Rg3 Nf4 26.Rxg7 Be6 27.b4 Rc1+ 0-1

[Event "Amsterdam IBM"]
[Site "12"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Kick Langeweg"]
[ECO "E58"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "84"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 c5 6.Nf3 d5 7.O-O
Nc6 8.a3 Bxc3 9.bxc3 Qc7 10.cxd5 exd5 11.Nh4 c4 12.Bc2 Ne4
13.Qe1 Qe7 14.g3 Bh3 15.Ng2 f5 16.f3 Nd6 17.a4 Rae8 18.Rf2
Bxg2 19.Kxg2 Rf6 20.Re2 Re6 21.Kg1 Nd8 22.Ba3 N8f7 23.Bxf5
Rxe3 24.Rxe3 Qxe3+ 25.Qxe3 Rxe3 26.Bg4 h5 27.Bxh5 Rxc3 28.Kg2
Kh7 29.Bxd6 Nxd6 30.Re1 Rc2+ 31.Kh3 Rb2 32.Re6 Rb6 33.Bg6+ Kg8
34.Re5 Rc6 35.Rxd5 c3 36.Bc2 Nc4 37.Rd8+ Kf7 38.d5 Rh6+ 39.Kg4
Ne3+ 40.Kf4 Nxc2 41.Rc8 Nb4 42.Ke4 c2 0-1

[Event "Amsterdam IBM"]
[Site "14"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Bertus F Enklaar"]
[ECO "A79"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1.d4 Nf6 2.c4 e6 3.Nc3 c5 4.d5 exd5 5.cxd5 d6 6.Nf3 g6 7.e4
Bg7 8.Be2 O-O 9.O-O Re8 10.Nd2 Na6 11.f3 Nc7 12.a4 b6 13.Nc4
Ba6 14.Ne3 Bxe2 15.Qxe2 a6 16.Rb1 Nh5 17.g3 Qd7 18.Nc4 Rab8
19.g4 Bd4+ 20.Kh1 Ng7 21.Qd3 Rf8 22.Bf4 Nge8 23.e5 dxe5
24.Nxe5 Bxe5 25.Bxe5 f6 26.Bg3 Nd6 27.Rbe1 Rbe8 28.Ne4 Nxe4
29.fxe4 Ne6 30.a5 b5 31.Kg2 c4 32.Qe3 Ng5 33.Rf4 f5 34.gxf5
gxf5 35.Rg4 fxg4 36.Qxg5+ Qg7 37.Qxg7+ Kxg7 38.e5 Rf5 39.d6
Rh5 40.d7 Rd8 41.e6 1-0

[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "15"]
[Result "1/2-1/2"]
[White "Jan Smejkal"]
[Black "Jan Hein Donner"]
[ECO "D78"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "91"]

1.c4 Nf6 2.Nf3 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O c6 6.d4 d5 7.Nbd2
Bf5 8.b3 a5 9.Bb2 Ne4 10.Nh4 Nxd2 11.Qxd2 Be6 12.Rac1 Nd7
13.e4 dxe4 14.Bxe4 a4 15.Bg2 axb3 16.axb3 Nc5 17.Qd1 Qc8
18.Qc2 Na6 19.Rfe1 Rd8 20.Rcd1 Bf6 21.Bc3 Bh3 22.Bxh3 Qxh3
23.Ng2 Nc7 24.d5 cxd5 25.Bxf6 exf6 26.Nf4 Qg4 27.cxd5 Nb5
28.Qb2 Qf5 29.Re7 Nd6 30.Ng2 Re8 31.Qe2 Rxe7 32.Qxe7 Qe5
33.Qxe5 fxe5 34.Ne3 Rc8 35.Ra1 Rc3 36.Ra8+ Kg7 37.Rd8 Nf5
38.Ng4 e4 39.d6 Nd4 40.Ne5 Nf3+ 41.Nxf3 exf3 42.h4 Rd3 43.Re8
Rxd6 44.Re3 Rf6 45.Kh2 h5 46.Kh3 1/2-1/2

[Event "Skopje ol (Men) fin-A"]
[Site "Skopje"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "4"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Svetozar Gligoric"]
[ECO "D79"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "22"]

1.d4 Nf6 2.c4 g6 3.g3 c6 4.Bg2 d5 5.cxd5 cxd5 6.Nf3 Bg7 7.O-O
O-O 8.Nc3 Nc6 9.Ne5 e6 10.Bf4 Nxe5 11.Bxe5 Bd7 1/2-1/2

[Event "Skopje ol (Men) prel"]
[Site "Skopje"]
[Date "1972.09.18"]
[EventDate "?"]
[Round "3"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Milko Bobotsov"]
[ECO "E41"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "36"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 O-O 6.Nf3 b6 7.O-O
Bb7 8.Bd2 cxd4 9.exd4 d5 10.cxd5 Nxd5 11.Qe2 Nc6 12.Rad1 Be7
13.a3 Bf6 14.Qe4 g6 15.Nxd5 Qxd5 16.Qxd5 exd5 17.Bc3 Rfe8
18.Rc1 Rac8 1/2-1/2

[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "3"]
[Result "1/2-1/2"]
[White "Vladimir A Savon"]
[Black "Jan Hein Donner"]
[ECO "B99"]
[WhiteElo "?"]
[BlackElo "?"]
[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.Bxf6 Nxf6 11.g4 b5 12.a3 Rb8
13.f5 O-O 14.g5 Nd7 15.Qh5 Ne5 16.Bh3 Qc4 17.f6 Bd8 18.Rhf1
Bb6 19.fxg7 Re8 20.Nb3 a5 21.Rf6 Kxg7 22.Bf1 Qc6 23.Kb1 Ba6
24.Qh6+ Kg8 25.Rf4 b4 26.Bxa6 bxc3 27.Rh4 1/2-1/2

[Event "Skopje ol (Men) fin-A"]
[Site "Skopje"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "9"]
[Result "1/2-1/2"]
[White "Wlodzimierz Schmidt"]
[Black "Jan Hein Donner"]
[ECO "D79"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "45"]

1.Nf3 d5 2.g3 g6 3.c4 c6 4.cxd5 cxd5 5.d4 Bg7 6.Bg2 Nf6 7.O-O
O-O 8.Nc3 Nc6 9.Ne5 e6 10.Bg5 h6 11.Nxc6 bxc6 12.Bf4 Nd7
13.Qd2 g5 14.Be3 e5 15.dxe5 Nxe5 16.b3 Qf6 17.Rfd1 Re8 18.Bd4
Qg6 19.Rac1 h5 20.e4 Bg4 21.Bxe5 Bxe5 22.Re1 Bxc3 23.Rxc3
1/2-1/2

[Event "Capablanca mem"]
[Site "Cienfuegos"]
[Date "1972.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Nikolay Minev"]
[ECO "B10"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "51"]

1.c4 c6 2.e4 e5 3.Nf3 d6 4.d4 Nd7 5.Nc3 Be7 6.Be2 Ngf6 7.O-O
O-O 8.Re1 Qc7 9.Bf1 a6 10.h3 Re8 11.Be3 Bf8 12.d5 g6 13.Nd2 c5
14.a3 Nh5 15.Bd3 Nf4 16.Bf1 Nh5 17.Kh2 Be7 18.g3 Qd8 19.Bd3
Bg5 20.Nf3 Bxe3 21.fxe3 Rf8 22.Nh4 Ng7 23.Rf1 f6 24.Rf2 Rf7
25.Qc2 Nf8 26.Rf3 1/2-1/2

[Event "Skopje ol (Men)"]
[Site "Skopje"]
[Date "1972.??.??"]
[EventDate "1972.??.??"]
[Round "?"]
[Result "1-0"]
[White "Robert Huebner"]
[Black "Jan Hein Donner"]
[ECO "B07"]
[WhiteElo "2640"]
[BlackElo "2500"]
[PlyCount "187"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.g3 Bg7 5.Bg2 O-O 6.Nge2 e5 7.O-O
c6 8.a4 a5 9.h3 Re8 10.Bg5 Nbd7 11.Qd2 Qc7 12.Rad1 Nb6 13.b3
exd4 14.Nxd4 d5 15.Bxf6 Bxf6 16.exd5 cxd5 17.Ndb5 Qc5 18.Nxd5
Nxd5 19.Qxd5 Qxd5 20.Rxd5 Be6 21.Rd6 Re7 22.Rfd1 Kg7 23.Rb6
Rb8 24.c4 g5 25.Nd4 Rd8 26.Nxe6+ Rxe6 27.Rxd8 Rxb6 28.Rd7 Rxb3
29.Bd5 b6 30.Rxf7+ Kg6 31.Rd7 Kf5 32.Rxh7 Rb4 33.Bc6 Rxc4
34.Bb5 Rd4 35.Kg2 Rd2 36.Rf7 Ke6 37.Bc4+ Kf5 38.Kf3 Kg6 39.Ke3
Rb2 40.Rb7 Bc3 41.Rb8 Rb4 42.Rg8+ Kf6 43.Kd3 Be5 44.Rf8+ Kg7
45.Rf5 Bf6 46.Bb5 Kg6 47.Rd5 Be7 48.Ke2 Kf6 49.Bd7 Bd8 50.Rf5+
Ke7 51.Bb5 Ke6 52.Rf3 Be7 53.Re3+ Kf6 54.Rf3+ Ke6 55.Kf1 Bc5
56.Kg2 Ke5 57.Be8 Ke6 58.g4 Ke7 59.Bc6 Ke6 60.Rf5 Be7 61.Bb5
Bf6 62.Be8 Rd4 63.Rf3 Rb4 64.Re3+ Kd6 65.Bf7 Be5 66.Bb3 Rf4
67.Rd3+ Ke7 68.Rd5 Kf6 69.Rd7 Bd4 70.Rf7+ Ke5 71.Re7+ Kd6
72.Re6+ Kd7 73.Re2 Bc5 74.Bc2 Kd8 75.Rd2+ Ke7 76.f3 Rb4 77.h4
gxh4 78.Kh3 Kf8 79.Kxh4 Be7+ 80.Kg3 b5 81.axb5 Rxb5 82.Rd7 Rc5
83.Bd1 Rc7 84.Rd4 Rc5 85.f4 Rc3+ 86.Bf3 Rc5 87.Bd5 Bf6 88.Rd1
a4 89.g5 Bg7 90.Be6 a3 91.Rd2 Ke7 92.f5 Be5+ 93.Kg4 Bd6 94.Ba2
1-0

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1972.??.??"]
[EventDate "1972.??.??"]
[Round "2"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Hans Ree"]
[ECO "A42"]
[WhiteElo "2500"]
[BlackElo "2520"]
[PlyCount "62"]

1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 Nc6 5. d5 Nd4 6. Be3 c5
7. Nge2 Qb6 8. Qd2 Nf6 9. Nxd4 cxd4 10. Qxd4 Qxb2 11. Rb1 Qa3
12. Qd2 Qa5 13. f3 O-O 14. Nb5 Qxd2+ 15. Kxd2 b6 16. Be2 Bd7
17. a4 Rfc8 18. Rhc1 Be8 19. Rc2 Nd7 20. a5 Nc5 21. axb6 axb6
22. Nd4 Ra6 23. Rcb2 Rb8 24. Rb4 Ra2+ 25. R1b2 Ra6 26. Bd1 Bd7
27. Bc2 Kf8 28. Rb1 Ke8 29. Nb3 Na4 30. Bd4 Bxd4 31. Nxd4 Nc5
1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1972.??.??"]
[EventDate "1972.??.??"]
[Round "4"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Robert G Hartoch"]
[ECO "A77"]
[WhiteElo "2500"]
[BlackElo "2430"]
[PlyCount "57"]

1. d4 Nf6 2. c4 c5 3. d5 g6 4. Nc3 d6 5. e4 Bg7 6. Be2 O-O
7. Nf3 e6 8. O-O exd5 9. cxd5 Re8 10. Nd2 Nbd7 11. h3 g5
12. Nc4 Nxe4 13. Nxe4 Rxe4 14. Bd3 Rh4 15. Nxd6 Ne5 16. Nf5 c4
17. Bc2 Bxf5 18. Bxf5 Rd4 19. Qc2 Nd3 20. Be3 Rxd5 21. Be4
Nxb2 22. Bxh7+ Kh8 23. Be4 Rd7 24. Qe2 Nd3 25. Qh5+ Kg8
26. Qh7+ Kf8 27. Bxd3 cxd3 28. Bc5+ Re7 29. Rae1 1-0

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1972.??.??"]
[EventDate "1972.??.??"]
[Round "5"]
[Result "1-0"]
[White "Walter Shawn Browne"]
[Black "Jan Hein Donner"]
[ECO "B08"]
[WhiteElo "2590"]
[BlackElo "2500"]
[PlyCount "61"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. Be2 O-O 6. O-O c6
7. a4 Qc7 8. h3 e5 9. dxe5 dxe5 10. Bc4 a5 11. Be3 Nh5 12. Re1
Nf4 13. Bxf4 exf4 14. e5 Bf5 15. Ne4 Bxe5 16. Nxe5 Qxe5
17. Nd6 Qc5 18. Bb3 Na6 19. Qd2 Rad8 20. Rad1 g5 21. Qc3 Qxc3
22. bxc3 Be6 23. Nxb7 Rxd1 24. Rxd1 Ra8 25. Rd6 Ra7 26. Nxa5
Nc5 27. Nxc6 Ra8 28. Nd4 Ne4 29. Rc6 Bd7 30. Rc7 Bxa4 31. Bd5
1-0

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1972.??.??"]
[EventDate "1972.??.??"]
[Round "8"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Kick Langeweg"]
[ECO "E41"]
[WhiteElo "2500"]
[BlackElo "2455"]
[PlyCount "81"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 O-O 6. Nf3 b6
7. O-O Bb7 8. Bd2 cxd4 9. exd4 d5 10. cxd5 Nxd5 11. Qe2 Nc6
12. Qe4 Nf6 13. Qh4 Be7 14. Ne4 Nxe4 15. Qxe4 g6 16. Rfd1 Qd7
17. Qf4 Nb4 18. Be4 Bxe4 19. Qxe4 Qd5 20. Qxd5 Nxd5 21. Rac1
Rfc8 22. Kf1 f6 23. Ne1 Kf7 24. g3 Ke8 25. Ng2 Kd7 26. Ne3
Nxe3+ 27. Bxe3 Rxc1 28. Rxc1 Rc8 29. Rxc8 Kxc8 30. a4 Kb7
31. Ke2 Kc6 32. Kd3 Kd5 33. Bd2 a6 34. h3 f5 35. b3 Bf6
36. Be3 b5 37. axb5 axb5 38. f3 Bg7 39. g4 Bf6 40. Bf2 Bg7
41. Bg1 1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1972.??.??"]
[EventDate "1972.??.??"]
[Round "12"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Pal Benko"]
[ECO "D37"]
[WhiteElo "2500"]
[BlackElo "2495"]
[PlyCount "69"]

1. d4 d5 2. c4 e6 3. Nc3 Be7 4. Bf4 Nf6 5. e3 O-O 6. Nf3 c5
7. dxc5 Bxc5 8. Be2 dxc4 9. Bxc4 Qxd1+ 10. Rxd1 a6 11. Bd3
Nbd7 12. Rc1 b6 13. Ne4 Bb7 14. Nxc5 Nxc5 15. Be2 Rfc8 16. O-O
Nd5 17. Bg3 Na4 18. Be5 f6 19. b3 Nac3 20. Bxc3 Nxc3 21. Bc4
Rxc4 22. bxc4 Ne2+ 23. Kh1 Nxc1 24. Rxc1 Rc8 25. Rb1 Rxc4
26. Rxb6 Bd5 27. Rxa6 Rc2 28. e4 Bxa2 29. h3 Rxf2 30. Nd4 Kf7
31. Ra7+ Kf8 32. Ra6 Bb1 33. Kg1 Rb2 34. Nxe6+ Kf7 35. Nc5
1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1972.??.??"]
[EventDate "1972.??.??"]
[Round "13"]
[Result "1/2-1/2"]
[White "Arturo Pomar-Salamanca"]
[Black "Jan Hein Donner"]
[ECO "A49"]
[WhiteElo "2460"]
[BlackElo "2500"]
[PlyCount "26"]

1. d4 Nf6 2. Nf3 g6 3. g3 Bg7 4. Bg2 O-O 5. O-O d6 6. b3 e5
7. dxe5 Nfd7 8. Bb2 dxe5 9. e4 Nc6 10. Na3 Nc5 11. Qxd8 Rxd8
12. Nb5 Ne6 13. Rad1 Bd7 1/2-1/2

[Event "Wijk aan Zee"]
[Site "03"]
[Date "1973.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Yuri Balashov"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "25"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Be3 Na6 7.Qd2
c5 8.dxc5 Nxc5 9.Bxc5 dxc5 10.e5 Qxd2+ 11.Nxd2 Nh5 12.g3 f6
13.Nd5 1/2-1/2

[Event "Wijk aan Zee"]
[Site "Wijk aan Zee"]
[Date "1973.??.??"]
[EventDate "?"]
[Round "13"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Vlastimil Hort"]
[ECO "D35"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "95"]

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 Be7 6.e3 c6 7.Qc2
Nbd7 8.Bd3 O-O 9.Nf3 Re8 10.O-O Nf8 11.Rab1 a5 12.Rfc1 Ne4
13.Bxe7 Qxe7 14.a3 Ng6 15.b4 axb4 16.axb4 b5 17.Bxe4 dxe4
18.Nd2 Bf5 19.Ne2 Bd7 20.Nb3 h5 21.Nc5 h4 22.Nxd7 Qxd7 23.h3
Re6 24.Ra1 Rxa1 25.Rxa1 Qd5 26.Ra8+ Kh7 27.Qc5 Qxc5 28.bxc5 f5
29.Kf1 Re7 30.Ke1 Rd7 31.Kd2 Kh6 32.Kc2 Kg5 33.Ra6 Rc7 34.Kb3
f4 35.Nc3 Kf5 36.d5 cxd5 37.Nxb5 Rb7 38.Rb6 Rxb6 39.cxb6 Nf8
40.Nd4+ Ke5 41.b7 Nd7 42.Kc3 Nb8 43.exf4+ Kxf4 44.Kb4 e3
45.fxe3 Kg3 46.Kc5 Nd7+ 47.Kxd5 Kxg2 48.Nc6 1-0

[Event "Wijk aan Zee"]
[Site "Wijk aan Zee"]
[Date "1973.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Ljubomir Ljubojevic"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "63"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nc6 7.e5
dxe5 8.dxe5 Nd5 9.Bd2 Ncb4 10.Be4 Nb6 11.a3 Na6 12.Qe2 Nc5
13.O-O-O Nxe4 14.Nxe4 c6 15.Ba5 Qe8 16.Qf2 Nd5 17.Qh4 f6
18.exf6 exf6 19.Rhe1 Bf5 20.Ng3 Qc8 21.c4 b6 22.Bd2 Nc7 23.Re7
Re8 24.Nxf5 gxf5 25.Rxg7+ Kxg7 26.Bc3 Re6 27.Ng5 h6 28.Nxe6+
Qxe6 29.Re1 Qf7 30.Bxf6+ Kg6 31.Re7 Qxc4+ 32.Bc3 1-0

[Event "Wijk aan Zee"]
[Site "Wijk aan Zee"]
[Date "1973.??.??"]
[EventDate "?"]
[Round "9"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Miguel Najdorf"]
[ECO "A77"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "43"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.e4
Bg7 8.Be2 O-O 9.O-O Re8 10.Nd2 Nbd7 11.h3 a6 12.a4 g5 13.Qc2
Ne5 14.Nd1 Nfd7 15.Ne3 Nf8 16.Ndc4 Nfg6 17.a5 Nxc4 18.Nxc4 Qe7
19.Bd2 Bd7 20.Ra3 Bb5 21.Rg3 Nf4 22.Bf3 1/2-1/2

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1973.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Boris Spassky"]
[Black "Jan Hein Donner"]
[ECO "B96"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "70"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6
7. f4 Nbd7 8. Qf3 Qc7 9. O-O-O b5 10. Bd3 Bb7 11. Rhe1 h6
12. Qh3 O-O-O 13. f5 e5 14. Ne6 hxg5 15. Qxh8 fxe6 16. fxe6
Nc5 17. Qh3 g4 18. Qg3 Qe7 19. b4 Nxd3+ 20. Qxd3 Qxe6 21. a4
bxa4 22. Nd5 Kb8 23. Kb2 Nxd5 24. exd5 Qd7 25. c4 Be7 26. Ka3
Rf8 27. Rf1 Rxf1 28. Rxf1 Bf6 29. Rb1 Bc8 30. b5 axb5
31. Rxb5+ Kc7 32. Qd2 Kd8 33. Rb6 Qc7 34. Rc6 Qb8 35. Qa5+ Ke7
0-1

[Event "Amsterdam"]
[Site "07"]
[Date "1973.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Laszlo Szabo"]
[Black "Jan Hein Donner"]
[ECO "D42"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "128"]

1.c4 Nf6 2.Nc3 c5 3.Nf3 d5 4.cxd5 Nxd5 5.e3 e6 6.d4 Nc6 7.Bd3
Be7 8.O-O O-O 9.Qe2 b6 10.Rd1 Bb7 11.dxc5 Bxc5 12.Nxd5 exd5
13.Bd2 Qe7 14.Bc3 Rfe8 15.Ba6 Rad8 16.Bxb7 Qxb7 17.Qc2 f6
18.Qb3 Qf7 19.Rd3 Rd7 20.Rad1 Red8 21.Qa4 Qe6 22.b4 Bd6 23.Qb3
Ne7 24.Nd4 Qf7 25.Qa4 Be5 26.Nf3 Bxc3 27.Rxc3 Qe6 28.Nd4 Qe5
29.Rdc1 h5 30.h3 Rb7 31.b5 Rbd7 32.Qd1 g6 33.R1c2 Re8 34.Qd3
Kf7 35.Rc1 Red8 36.Qc2 Re8 37.Qb3 Red8 38.a4 Re8 39.Qa2 Rb8
40.R3c2 Kg7 41.Qa3 Kf7 42.a5 bxa5 43.Nc6 Nxc6 44.bxc6 Rc7
45.Qxa5 Rb6 46.Rc5 Qb2 47.Rd1 Qb4 48.Qxb4 Rxb4 49.Rcxd5 Rxc6
50.Rd7+ Ke6 51.Rxa7 Rb2 52.h4 Rcc2 53.Ra6+ Ke7 54.Rf1 Kf7
55.g3 Ke7 56.Ra7+ Ke6 57.Rg7 Kf5 58.e4 Kxe4 59.Rxg6 Rc6
60.Re1+ Kd4 61.Re3 Rb5 62.Rf3 Ke5 63.Rh6 Rbb6 64.Rxh5+ Ke6 1-0

[Event "Wijk aan Zee"]
[Site "Wijk aan Zee"]
[Date "1973.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Laszlo Szabo"]
[ECO "E92"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "42"]

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Nf3 e5 7.d5 Nh5
8.g3 Nd7 9.Be3 Nhf6 10.Nd2 c6 11.a3 a6 12.b4 cxd5 13.cxd5 Ne8
14.Nc4 f5 15.f3 Ndf6 16.Rc1 fxe4 17.fxe4 Bh3 18.Bf1 Bg4 19.Be2
Bh3 20.Bf1 Bg4 21.Be2 Bh3 1/2-1/2

[Event "Wijk aan Zee"]
[Site "7"]
[Date "1973.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Mikhail Tal"]
[Black "Jan Hein Donner"]
[ECO "A35"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "49"]

1.c4 c5 2.Nf3 Nf6 3.Nc3 Nc6 4.d4 cxd4 5.Nxd4 d5 6.Qa4 Qb6
7.Ndb5 e6 8.Bf4 e5 9.cxd5 exf4 10.Qxf4 Nb4 11.Nc7+ Kd8
12.Nxa8+ Qa5 13.O-O-O Qc5 14.e4 Nxa2+ 15.Kc2 Nxc3 16.bxc3 Bd6
17.e5 Nxd5 18.Qc4 Bf5+ 19.Kd2 Qxf2+ 20.Be2 Qe3+ 21.Ke1 Bxe5
22.Rxd5+ Ke7 23.Nc7 Bxc3+ 24.Kd1 Be4 25.Bf3 1-0

[Event "04, Amsterdam"]
[Site "04, Amsterdam"]
[Date "1973.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Jan Timman"]
[ECO "D87"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "45"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7
7.Bc4 O-O 8.Ne2 c5 9.O-O Nc6 10.Be3 Qc7 11.Qc1 Bd7 12.Bf4 e5
13.dxe5 Nxe5 14.Bd5 Bc6 15.Rd1 Rad8 16.c4 Qa5 17.Bh6 Bxh6
18.Qxh6 b5 19.f4 Nxc4 20.f5 Rd6 21.Bxc4 Qd8 22.Rxd6 Qxd6
23.Rf1 1-0

[Event "Amsterdam IBM 03"]
[Site "Amsterdam IBM 03"]
[Date "1973.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Timman"]
[Black "Jan Hein Donner"]
[ECO "B07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "78"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nge2 Bg7 5.g3 O-O 6.Bg2 e5 7.O-O
c6 8.a4 a5 9.b3 Na6 10.Ba3 Re8 11.Qd2 Nb4 12.Rae1 Qb6 13.Bb2
Be6 14.Nd1 Rad8 15.Ne3 Ng4 16.h3 Nxe3 17.fxe3 d5 18.exd5 Bxd5
19.Bxd5 Nxd5 20.Nc3 exd4 21.Nxd5 Rxd5 22.exd4 Rxe1 23.Rxe1
Bxd4+ 24.Bxd4 Qxd4+ 25.Qxd4 Rxd4 26.Re7 Rb4 27.Kf2 Kg7 28.Re5
b6 29.Re3 Rd4 30.Kf3 Kf6 31.Ke2 Rd5 32.Rc3 Rc5 33.Rf3+ Ke6
34.c3 f5 35.h4 Re5+ 36.Kd2 Re4 37.Kd3 Rg4 38.Re3+ Kd6 39.Ke2
Re4 0-1

[Event "Amsterdam SB"]
[Site "Amsterdam SB"]
[Date "1973.??.??"]
[EventDate "?"]
[Round "1"]
[Result "0-1"]
[White "Jan Timman"]
[Black "Jan Hein Donner"]
[ECO "E82"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "85"]

1.c4 Nf6 2.Nc3 g6 3.e4 d6 4.d4 Bg7 5.f3 O-O 6.Be3 b6 7.Bd3 a6
8.Nge2 c5 9.e5 Nfd7 10.Be4 Ra7 11.exd6 exd6 12.O-O Nf6 13.Bg5
h6 14.Bh4 g5 15.Bf2 Nxe4 16.fxe4 Nc6 17.Qd2 Bg4 18.h3 Bxe2
19.Nxe2 Re7 20.d5 Ne5 21.Qc2 b5 22.cxb5 axb5 23.Ng3 Nc4 24.Nf5
Bxb2 25.Qe2 Bg7 26.Bg3 Ra7 27.Rab1 Qd7 28.h4 f6 29.Rb3 Rfa8
30.Rfb1 Bf8 31.a4 Re8 32.Rf1 bxa4 33.Rbb1 Ne5 34.Bxe5 Rxe5
35.Qh5 Kh7 36.Rb8 Qf7 37.Qg4 a3 38.hxg5 fxg5 39.Ng3 Qxf1+
40.Nxf1 a2 41.Qc8 Bg7 42.Qg8+ Kg6 43.Rd8 0-1

[Event "Amsterdam SB"]
[Site "Amsterdam SB"]
[Date "1973.??.??"]
[EventDate "?"]
[Round "10"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Jan Timman"]
[ECO "E41"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "81"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 O-O 6.Nf3 b6 7.O-O
Bb7 8.Bd2 cxd4 9.exd4 d5 10.cxd5 Nxd5 11.Qe2 Nd7 12.Rad1 Bxc3
13.bxc3 Qc7 14.Qe4 N5f6 15.Qe2 Nd5 16.Qe4 N5f6 17.Qe3 Bd5
18.Ne5 Nxe5 19.dxe5 Nd7 20.Qh3 g6 21.c4 Bc6 22.Bh6 Rfe8
23.Rfe1 Nxe5 24.Qg3 f6 25.Bf4 Rad8 26.Bxe5 fxe5 27.Rxe5 Rd4
28.Rde1 Qf7 29.h4 Red8 30.Bc2 Rd2 31.Bb3 Rf8 32.f3 Rd3 33.h5
Bd7 34.hxg6 hxg6 35.Bc2 Rd2 36.Bxg6 Qf4 37.Qh3 Qd4+ 38.Kh1 Rf4
39.Qh7+ Kf8 40.R5e4 Qf6 41.Qh6+ 1-0

[Event "Amsterdam SB 07"]
[Site "Amsterdam SB 07"]
[Date "1973.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Timman"]
[Black "Jan Hein Donner"]
[ECO "B07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "79"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nge2 Bg7 5.g3 O-O 6.Bg2 e5 7.O-O
Nc6 8.dxe5 dxe5 9.Bg5 Nd4 10.Nxd4 exd4 11.Nd5 h6 12.Nxf6+ Bxf6
13.Bxh6 Re8 14.h4 Be6 15.Qd2 Qd7 16.Rfe1 c5 17.h5 Rad8 18.Qf4
Be7 19.Bf3 Qd6 20.e5 Qd7 21.Rad1 Kh7 22.Kg2 Rg8 23.hxg6 Rxg6
24.Rh1 Kg8 25.Rh5 Bd5 26.Rdh1 Bxf3+ 27.Qxf3 Qc6 28.Bf4 Qxf3+
29.Kxf3 Rb6 30.Ke4 Kf8 31.Rh8+ Kg7 32.R8h7+ Kf8 33.R1h5 Rxb2
34.Rf5 Ke8 35.Rfxf7 Bf8 36.Rxf8+ Kxf8 37.Rh8+ Ke7 38.Bg5+ Kf7
39.Rxd8 Rxc2 40.f4 1-0

[Event "10th Capablanca Memorial Tournament"]
[Site "Havana, Cuba"]
[Date "1973.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Garcia"]
[ECO "A20"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "66"]

1.c4 e5 2.g3 Nc6 3.Bg2 g6 4.e3 Bg7 5.Ne2 d6 6.d4 exd4 7.exd4
Nge7 8.O-O O-O 9.Nbc3 Nf5 10.d5 Ncd4 11.Nxd4 Nxd4 12.Ne4 b5
13.c5 dxc5 14.Bg5 f6 15.Be3 Bg4 16.Qxg4 f5 17.Qd1 fxe4 18.Bxe4
Qd6 19.Rc1 a5 20.b3 b4 21.Qd3 a4 22.Qc4 axb3 23.axb3 Ra2
24.Bc2 Nf3+ 25.Kg2 Bd4 26.Bxd4 cxd4 27.Rfd1 Rf7 28.Qe2 Qxd5
29.Be4 Qxb3 30.Rc2 Rxc2 31.Bxc2 Qa2 32.Qd3 Kg7 33.Bb3 Ne1+ 0-1

[Event "IBM"]
[Site "Amsterdam"]
[Date "1973.??.??"]
[EventDate "?"]
[Round "2"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Albin Planinc"]
[ECO "A73"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "70"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.e4
Bg7 8.Be2 O-O 9.O-O Bg4 10.Bf4 Re8 11.Qc2 a6 12.a4 Qe7 13.Rfe1
Nbd7 14.h3 Bxf3 15.Bxf3 c4 16.a5 Nc5 17.Re2 Nfd7 18.Ra3 Nb3
19.Qd1 Ne5 20.Bxe5 Bxe5 21.Na4 Nd4 22.Re1 Nb5 23.Ra1 Rac8
24.Rc1 Bd4 25.Re2 Qd8 26.Rec2 Qxa5 27.Rxc4 Rxc4 28.Rxc4 Bg7
29.b4 Qd8 30.g3 Na3 31.Rc1 b5 32.Nc3 Qb6 33.Be2 Bd4 34.Qb3
Bxf2+ 35.Kg2 Qe3 0-1

[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1973.01.13"]
[EventDate "?"]
[Round "2"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Albin Planinc"]
[ECO "A61"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "44"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.Nd2
Bg7 8.Nc4 O-O 9.Bf4 b6 10.Bxd6 Re8 11.Bg3 Ne4 12.Nxe4 Rxe4
13.e3 b5 14.Nd6 Rb4 15.Bxb5 Bf8 16.Bc6 Ba6 17.Bxa8 Rxb2 18.Qa4
Qf6 19.Rc1 Bxd6 20.f4 Qf5 21.e4 Re2+ 22.Kd1 Qh5 0-1

[Event "IBM"]
[Site "Amsterdam"]
[Date "1973.??.??"]
[EventDate "?"]
[Round "11"]
[Result "1/2-1/2"]
[White "Jan Smejkal"]
[Black "Jan Hein Donner"]
[ECO "E06"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "114"]

1.c4 e6 2.g3 d5 3.Bg2 Nf6 4.Nf3 Be7 5.O-O O-O 6.d4 b6 7.Nc3
Bb7 8.Ne5 c6 9.e4 dxc4 10.Nxc4 Nbd7 11.Re1 b5 12.Ne3 Nb6 13.e5
Nfd5 14.Ne4 Nd7 15.Qg4 Kh8 16.Qh5 c5 17.Nxd5 Bxd5 18.Ng5 Bxg5
19.Bxg5 Qe8 20.Bxd5 exd5 21.dxc5 Nxc5 22.Rad1 Qe6 23.Be3 Rac8
24.Rd4 Rfe8 25.Red1 Red8 26.Rh4 h6 27.Bg5 Rd7 28.Bf6 Kh7
29.Rc1 Rdc7 30.Qg5 Rg8 31.Qe3 d4 32.Qxd4 gxf6 33.Rxc5 Rxc5
34.Qxc5 fxe5 35.Qxb5 Rd8 36.Ra4 Rd7 37.Qe2 Qd5 38.Qe4+ Qxe4
39.Rxe4 f6 40.Ra4 Kg6 41.Ra6 e4 42.Kf1 Kf5 43.Ke2 h5 44.h4 Rb7
45.b3 Rc7 46.Ra5+ Kg4 47.Ra4 f5 48.Rc4 Rd7 49.Rc6 Rd3 50.Ra6
Rf3 51.Rxa7 Kh3 52.Kf1 e3 53.Ke2 exf2 54.Kf1 Kxg3 55.Rg7+ Kxh4
56.Rg2 Rc3 57.Rxf2 Kg3 1/2-1/2

[Event "Capablanca mem"]
[Site "Cienfuegos"]
[Date "1973.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Vladimir A Savon"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "68"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nc6 7.Be3
Ng4 8.Bg1 e5 9.fxe5 dxe5 10.d5 Nd4 11.h3 Nh6 12.Qd2 f5
13.O-O-O fxe4 14.Bxe4 Nhf5 15.Qe1 Nxf3 16.Bxf3 Nd4 17.Be4 Bf5
18.Kb1 Bxe4 19.Qxe4 Qd7 20.Bh2 Rae8 21.Rhe1 b5 22.Qg4 Rf5
23.Ne4 b4 24.Ng3 Qa4 25.b3 Qd7 26.Nxf5 gxf5 27.Qg5 f4 28.Rxd4
exd4 29.Rxe8+ Qxe8 30.Bxf4 d3 31.Bd2 Qe2 32.Qd8+ Bf8 33.Qg5+
Bg7 34.Qd8+ Bf8 1/2-1/2

[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1973.01.13"]
[EventDate "?"]
[Round "11"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Evgeni Vasiukov"]
[ECO "A54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "113"]

1.d4 Nf6 2.c4 d6 3.Nc3 e5 4.Nf3 e4 5.Nd2 Qe7 6.Qc2 Bf5 7.f3
Nc6 8.fxe4 Bg6 9.e3 O-O-O 10.a3 Re8 11.Bd3 Ng4 12.Nf3 h5
13.O-O h4 14.Nd5 Qd8 15.Nf4 Bh7 16.h3 Nh6 17.Bd2 g5 18.Nd5 g4
19.hxg4 Nxg4 20.e5 Bxd3 21.Qxd3 Kb8 22.Qf5 Rg8 23.Nf6 Nxf6
24.exf6 Bh6 25.Rae1 Re6 26.Nxh4 Bg5 27.Nf3 Rxf6 28.Qd3 Rfg6
29.Nxg5 Qxg5 30.Re2 Qh5 31.Rf5 Qh3 32.Qe4 Re6 33.Qxe6 fxe6
34.Rf8+ Rxf8 35.gxh3 Rh8 36.Rh2 Kc8 37.h4 Kd7 38.Kf2 Ke7
39.Kf3 Kf7 40.h5 Rh7 41.Kf4 Kg8 42.Rg2+ Kf7 43.Rg5 b6 44.Bc3
Ne7 45.e4 Ng8 46.e5 dxe5+ 47.dxe5 Ne7 48.b4 a6 49.a4 b5
50.axb5 axb5 51.Ke4 bxc4 52.Kd4 Ke8 53.Kxc4 Kd7 54.Bd2 Kc6
55.b5+ Kb6 56.Be3+ Kb7 57.Bc5 1/2-1/2

[Event "Capablanca mem"]
[Site "Cienfuegos"]
[Date "1973.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Enrico Paoli"]
[Black "Jan Hein Donner"]
[ECO "B84"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "80"]

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be2 e6 7.O-O
Be7 8.Be3 O-O 9.f4 Nc6 10.Qe1 Bd7 11.Rd1 Qc7 12.Qg3 b5 13.a3
Rad8 14.Kh1 Nxd4 15.Bxd4 Bc6 16.Bd3 Qb7 17.Rde1 a5 18.Bxf6
Bxf6 19.e5 Be7 20.Qh3 g6 21.Ne4 dxe5 22.fxe5 Bxe4 23.Rxe4 Rd5
24.Qh6 Rfd8 25.Ref4 Bf8 26.Qh4 Qe7 27.Qh3 Bg7 28.Rh4 Rxe5
29.Rxh7 Rd4 30.c3 Ra4 31.c4 Qg5 32.Qh4 Qxh4 33.Rxh4 Re3 34.Rh3
Rxh3 35.gxh3 Bxb2 36.cxb5 Rxa3 37.Be4 Rb3 38.Bc6 Kg7 39.Kg2 a4
40.b6 a3 0-1

[Event "Wijk aan Zee"]
[Site "Wijk aan Zee"]
[Date "1973.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1/2-1/2"]
[White "Coenraad Zuidema"]
[Black "Jan Hein Donner"]
[ECO "B93"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "45"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 e5
7. Nf3 Nbd7 8. Bc4 b5 9. Bb3 Be7 10. Qe2 O-O 11. O-O Bb7
12. Kh1 Nc5 13. fxe5 Nfxe4 14. Nxe4 Bxe4 15. exd6 Qxd6 16. Bg5
Rae8 17. Rad1 Qg6 18. Bxe7 Rxe7 19. Bd5 Rfe8 20. Qf2 Bxd5
21. Rxd5 Ne4 22. Qd4 Nf6 23. Rg5 1/2-1/2

[Event "IBM"]
[Site "Amsterdam"]
[Date "1973.??.??"]
[EventDate "?"]
[Round "4"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Zoltan Ribli"]
[ECO "E62"]
[WhiteElo "2480"]
[BlackElo "2525"]
[PlyCount "79"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nc6 7.d5
Na5 8.b3 c5 9.Bb2 a6 10.O-O Rb8 11.Nd2 b5 12.Qc2 e5 13.Rae1
Nh5 14.e4 f5 15.exf5 gxf5 16.Ne2 f4 17.gxf4 Nxf4 18.Nxf4 Rxf4
19.cxb5 axb5 20.Ne4 Rb7 21.Bc1 Rg4 22.f4 exf4 23.Bxf4 Bd4+
24.Kh1 Rbg7 25.Bg3 Nb7 26.Bf3 R4g6 27.Bh5 Rh6 28.Nf6+ Bxf6
29.Re8+ Qxe8 30.Bxe8 Bh3 31.Rg1 b4 32.Qe4 Bd4 33.Bb5 Rf6
34.Re1 Bf5 35.Qh4 Rg4 36.Re8+ Kg7 37.Re7+ Kg8 38.Re8+ Kg7
39.Qh5 Re4 40.Qg5+ 1-0

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1973.??.??"]
[EventDate "1973.01.??"]
[Round "5"]
[Result "1-0"]
[White "Zoltan Ribli"]
[Black "Jan Hein Donner"]
[ECO "A14"]
[WhiteElo "2505"]
[BlackElo "2470"]
[PlyCount "109"]

1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 Be7 5. O-O O-O 6. d4 b6
7. cxd5 exd5 8. Nc3 Bb7 9. b3 Ne4 10. Bb2 Nxc3 11. Bxc3 Nd7
12. Rc1 Nf6 13. Bb2 Bd6 14. Qc2 Ne4 15. Ne5 c5 16. dxc5 Bxc5
17. Nd3 Bd6 18. Rfd1 Qg5 19. Qb1 h5 20. Qa1 Rfe8 21. Bd4 h4
22. Be3 Qh5 23. Bf4 Be7 24. Bf3 Qf5 25. Qe5 Qxe5 26. Bxe5 hxg3
27. hxg3 Rac8 28. Rxc8 Rxc8 29. Nf4 Rd8 30. Rc1 Bc5 31. Nd3
Rc8 32. Rd1 Be7 33. Nf4 Rd8 34. e3 g5 35. Nh5 f6 36. Bb2 Kf7
37. g4 Bc8 38. Kg2 f5 39. gxf5 Bxf5 40. Ng3 Bg6 41. Be5 Bf6
42. Bc7 Rc8 43. Rxd5 Nxf2 44. Rd7+ Ke6 45. Rd6+ Ke7 46. Rc6
Nd3 47. Bg4 Ra8 48. Bd6+ Kf7 49. Rc7+ Kg8 50. Bf5 Bxf5
51. Nxf5 a5 52. Kf3 Re8 53. Kg4 Re6 54. Nh6+ Kh8 55. Kf5 1-0

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1973.??.??"]
[EventDate "1973.01.??"]
[Round "6"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Bertus F Enklaar"]
[ECO "A76"]
[WhiteElo "2470"]
[BlackElo "2410"]
[PlyCount "82"]

1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6
7. e4 Bg7 8. Be2 O-O 9. O-O Re8 10. Qc2 Bg4 11. Bf4 a6 12. a4
Qc7 13. Rfe1 Nbd7 14. a5 Re7 15. Nd2 Bxe2 16. Rxe2 Rf8 17. Nc4
Ne8 18. Na4 Bd4 19. Rae1 f6 20. Be3 Bxe3 21. Rxe3 Ne5 22. Nab6
Qd8 23. f4 Ng4 24. R3e2 Nc7 25. h3 Nh6 26. b4 cxb4 27. Qb2 Nb5
28. Qxb4 g5 29. fxg5 fxg5 30. Qd2 Rg7 31. e5 dxe5 32. Rxe5 Nf5
33. Rf1 Nfd6 34. Rxf8+ Kxf8 35. Re6 Rg6 36. Qf2+ Kg8 37. Nxd6
Nxd6 38. Qg3 Kf7 39. Qe5 Qc7 40. Rxg6 Kxg6 41. Qe3 Qf7 1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1973.??.??"]
[EventDate "1973.01.??"]
[Round "8"]
[Result "1-0"]
[White "Hans Ree"]
[Black "Jan Hein Donner"]
[ECO "E93"]
[WhiteElo "2480"]
[BlackElo "2470"]
[PlyCount "57"]

1. c4 Nf6 2. d4 g6 3. Nc3 Bg7 4. e4 O-O 5. Nf3 d6 6. Be2 e5
7. d5 Nbd7 8. Bg5 h6 9. Bh4 g5 10. Bg3 Nh5 11. h4 Nxg3
12. fxg3 g4 13. Nd2 h5 14. Bd3 Nc5 15. Bc2 f5 16. exf5 e4
17. Ndxe4 Nxe4 18. Nxe4 Bxf5 19. O-O Qe7 20. Re1 Bxb2 21. Ng5
Qg7 22. Bxf5 Qd4+ 23. Kh2 Rxf5 24. Qc2 Rxg5 25. hxg5 Bxa1
26. Re7 Qh8 27. Qg6+ Bg7 28. Qf7+ Kh7 29. Re6 1-0

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1973.??.??"]
[EventDate "1973.01.??"]
[Round "10"]
[Result "1/2-1/2"]
[White "Kick Langeweg"]
[Black "Jan Hein Donner"]
[ECO "A04"]
[WhiteElo "2425"]
[BlackElo "2470"]
[PlyCount "33"]

1. Nf3 Nf6 2. g3 c5 3. Bg2 Nc6 4. c4 g6 5. O-O Bg7 6. Nc3 O-O
7. a3 d5 8. cxd5 Nxd5 9. Nxd5 Qxd5 10. d3 b6 11. Be3 Bb7
12. Qa4 Qd7 13. Rab1 Rfd8 14. Rfe1 Nd4 15. Qxd7 Rxd7 16. Nxd4
cxd4 17. Bxb7 1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1973.??.??"]
[EventDate "1973.01.??"]
[Round "12"]
[Result "1/2-1/2"]
[White "Ulf Andersson"]
[Black "Jan Hein Donner"]
[ECO "B52"]
[WhiteElo "2535"]
[BlackElo "2470"]
[PlyCount "56"]

1. e4 c5 2. Nf3 d6 3. Bb5+ Bd7 4. Bxd7+ Qxd7 5. c4 Nc6 6. Nc3
g6 7. d4 cxd4 8. Nxd4 Bg7 9. Be3 Nf6 10. f3 O-O 11. O-O Rfc8
12. Nde2 Qd8 13. b3 a6 14. a4 Nd7 15. Rb1 Nc5 16. Qd2 Rab8
17. Rfd1 Qf8 18. Nf4 Nb4 19. Nce2 Nc6 20. a5 Qd8 21. b4 Na4
22. c5 Ne5 23. Qa2 Qe8 24. Ra1 Nb2 25. Rdb1 Nbd3 26. cxd6 Nxf4
27. Bxf4 exd6 28. Rd1 Qb5 1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1973.??.??"]
[EventDate "1973.01.??"]
[Round "15"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Robert G Hartoch"]
[ECO "A79"]
[WhiteElo "2470"]
[BlackElo "2430"]
[PlyCount "57"]

1. d4 Nf6 2. c4 c5 3. d5 g6 4. Nc3 Bg7 5. e4 d6 6. Be2 O-O
7. Nf3 e6 8. O-O exd5 9. cxd5 Re8 10. Nd2 Na6 11. f3 Rb8
12. a4 Nb4 13. Nc4 Bf8 14. Bg5 h6 15. Be3 b6 16. Qd2 Kh7
17. g4 Ba6 18. Nb5 Qd7 19. Bf4 Bxb5 20. axb5 Qc7 21. Bg3 Nd7
22. Ra3 Ne5 23. Nxe5 dxe5 24. f4 Bd6 25. Raf3 exf4 26. Bxf4
Rxe4 27. Bxd6 Qxd6 28. Rxf7+ Kg8 29. Qxh6 1-0

[Event "IBM"]
[Site "Amsterdam NED"]
[Date "1973.??.??"]
[EventDate "?"]
[Round "15"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Ulf Andersson"]
[ECO "E55"]
[WhiteElo "2480"]
[BlackElo "2555"]
[PlyCount "138"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 O-O 6.Nf3 d5 7.O-O
dxc4 8.Bxc4 Nbd7 9.Bd3 b6 10.a3 cxd4 11.exd4 Bxc3 12.bxc3 Bb7
13.Re1 Rc8 14.Bd2 Nc5 15.Be2 Nce4 16.c4 Nxd2 17.Qxd2 Bxf3
18.gxf3 Qd6 19.Qe3 Rfd8 20.Red1 g6 21.a4 Nh5 22.a5 Ng7 23.c5
bxc5 24.dxc5 Qc7 25.Qc3 e5 26.f4 Ne6 27.fxe5 Qxc5 28.Qxc5 Rxc5
29.Rxd8+ Nxd8 30.a6 Rxe5 31.Rd1 Nc6 32.Kf1 Kf8 33.Rc1 Nd4
34.Bd3 Re7 35.Kg2 Rd7 36.Be4 Ke7 37.Rc8 Ne6 38.Bb7 Rd8 39.Rc4
Rd4 40.Rc8 Rd8 41.Rc4 Rd3 42.f3 h6 43.Kf2 g5 44.Rc8 Rd8 45.Rc2
h5 46.Ke3 h4 47.Rc6 f5 48.Rc4 Kf6 49.Rc6 Ke5 50.Rc4 Rd1 51.Rc8
Rd8 52.Rc4 h3 53.Rc8 Rxc8 54.Bxc8 Nc5 55.Bb7 Nd7 56.Bc8 Nb6
57.Bb7 Nd7 58.Bc8 Nf8 59.Bb7 Ng6 60.Bc8 Nh4 61.Bb7 Ng2+ 62.Kf2
Kf4 63.Bc8 Nh4 64.Bb7 Ng6 65.Bc8 Ne5 66.Bb7 g4 67.fxg4 fxg4
68.Kg1 g3 69.Kh1 Kg4 0-1

[Event "Wijk aan Zee"]
[Site "Wijk aan Zee"]
[Date "1974.??.??"]
[EventDate "?"]
[Round "3"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Andras Adorjan"]
[ECO "D86"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "51"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7
7.Bc4 c5 8.Ne2 Nc6 9.Be3 O-O 10.O-O Qc7 11.Qc1 b6 12.Bf4 e5
13.dxe5 Nxe5 14.Bd5 Bb7 15.c4 Kh8 16.Bh6 Bxh6 17.Qxh6 Bxd5
18.cxd5 Rae8 19.Qd2 c4 20.Qd4 Qc5 21.Qxc5 bxc5 22.f4 Nd3 23.e5
g5 24.Rad1 gxf4 25.Nxf4 Nxe5 26.Rfe1 1/2-1/2

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1974.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Efim Geller"]
[Black "Jan Hein Donner"]
[ECO "B07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "60"]

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

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1974.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Borislav Ivkov"]
[ECO "A56"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "84"]

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

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1974.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Vlastimil Jansa"]
[ECO "E62"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "46"]

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

[Event "Nice"]
[Site "Nice"]
[Date "1974.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Ljubomir Ljubojevic"]
[ECO "A42"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "82"]

1.d4 g6 2.c4 Bg7 3.Nc3 d6 4.e4 Nd7 5.Be2 e5 6.Nf3 c6 7.O-O Nh6
8.Rb1 O-O 9.b4 exd4 10.Nxd4 Ne5 11.h3 Qh4 12.Rb3 g5 13.Nf3
Nxf3+ 14.Bxf3 g4 15.hxg4 Nxg4 16.Bxg4 Bxg4 17.Ne2 Rfe8 18.Rg3
Be5 19.f4 Qxg3 20.Nxg3 Bxd1 21.fxe5 Bc2 22.exd6 Re6 23.c5 Kf8
24.Bg5 Rg6 25.Rf5 Bd1 26.d7 Rxg5 27.Rxg5 f6 28.Rf5 Ke7 29.Rf4
Rg8 30.Nf5+ Kxd7 31.Ne3 Bh5 32.Rxf6 Re8 33.Rf4 Bg6 34.Nf5 b6
35.Nd6 Re7 36.Nf5 Re5 37.cxb6 axb6 38.Kf2 c5 39.bxc5 Rxc5
40.Ke3 Ra5 41.Rf2 Bf7 0-1

[Event "Amsterdam (Netherlands)"]
[Site "Amsterdam (Netherlands)"]
[Date "1974.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "William James Lombardy"]
[ECO "D86"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "39"]

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

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1974.??.??"]
[EventDate "?"]
[Round "06"]
[Result "1-0"]
[White "Gennady Sosonko"]
[Black "Jan Hein Donner"]
[ECO "E04"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "65"]

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

[Event "Leeuwarden NED ch"]
[Site "Leeuwarden NED ch"]
[Date "1974.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1/2-1/2"]
[White "Gennady Sosonko"]
[Black "Jan Hein Donner"]
[ECO "E10"]
[WhiteElo "2430"]
[BlackElo "2480"]
[PlyCount "25"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Qa4+ Nbd7 6. Bg2 a6
7. Nc3 Rb8 8. Qxc4 b5 9. Qd3 Bb7 10. O-O c5 11. Bf4 Rc8
12. dxc5 Bxc5 13. Ne5 1/2-1/2

[Event "3, Leeuwarden NED ch"]
[Site "3, Leeuwarden NED ch"]
[Date "1974.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Jan Timman"]
[ECO "E60"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "44"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 c6 5.e4 d6 6.Ne2 O-O 7.O-O e5
8.h3 a6 9.Qc2 b5 10.Be3 exd4 11.Nxd4 c5 12.Nb3 Nc6 13.Rd1 Qe7
14.cxb5 axb5 15.Nc3 Rb8 16.Qd2 Rd8 17.Bg5 Be6 18.Nd5 Bxd5
19.exd5 Ne5 20.Na5 Qc7 21.Nc6 Nxc6 22.dxc6 h6 1/2-1/2

[Event "Amsterdam IBM"]
[Site "Amsterdam IBM"]
[Date "1974.??.??"]
[EventDate "?"]
[Round "14"]
[Result "1/2-1/2"]
[White "Jan Timman"]
[Black "Jan Hein Donner"]
[ECO "C54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "40"]

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

[Event "Wijk aan Zee I 17/168 (Minev,NN)"]
[Site "Wijk aan Zee I 17/168 (Minev,NN)"]
[Date "1974.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Jan Timman"]
[ECO "A42"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "99"]

1.d4 g6 2.c4 Bg7 3.Nc3 d6 4.e4 Nc6 5.d5 Nd4 6.Be3 c5 7.Nge2
Qb6 8.Qd2 Nf6 9.f3 Nd7 10.Na4 Qa6 11.Nxd4 Qxa4 12.Nb5 O-O
13.Bh6 Bxh6 14.Qxh6 a6 15.Nc3 Qb4 16.Qd2 f5 17.exf5 Rxf5
18.Be2 Ne5 19.b3 b5 20.cxb5 g5 21.Nd1 Qh4+ 22.Nf2 g4 23.f4 g3
24.hxg3 Qxg3 25.Rh3 Qxf4 26.Qxf4 Rxf4 27.Rg3+ Kf7 28.Nd3 Nxd3+
29.Bxd3 axb5 30.Bxb5 Bf5 31.a4 Be4 32.Bc4 h5 33.Ke2 h4 34.Ke3
Rf5 35.Rg4 Bxd5 36.Rf4 Bxc4 37.Rxf5+ Ke6 38.Rxc5 dxc5 39.bxc4
Kf5 40.a5 Ra6 41.Ra3 e5 42.Ra2 e4 43.Rf2+ Kg4 44.Kxe4 Rxa5
45.Rf8 Kg3 46.Rg8+ Kf2 47.Kd5 Ra3 48.Rg4 Rg3 49.Rxh4 Rg5+
50.Kc6 1-0

[Event "Nice ol (Men) fin-A"]
[Site "Nice"]
[Date "1974.06.06"]
[EventDate "?"]
[Round "11"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Miroslav Filip"]
[ECO "E52"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "34"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 b6 7.O-O
Bb7 8.a3 Bd6 9.b4 dxc4 10.Bxc4 Nbd7 11.Nb5 Be7 12.Qe2 c5
13.bxc5 bxc5 14.Rd1 Qc8 15.Bb2 a6 16.Nc3 cxd4 17.exd4 Nc5
1/2-1/2

[Event "IBM"]
[Site "Amsterdam"]
[Date "1974.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Dragoljub Velimirovic"]
[ECO "A76"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "84"]

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

[Event "IBM"]
[Site "Amsterdam"]
[Date "1974.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1/2-1/2"]
[White "Albin Planinc"]
[Black "Jan Hein Donner"]
[ECO "B08"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "80"]

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

[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1974.??.??"]
[EventDate "?"]
[Round "8"]
[Result "1/2-1/2"]
[White "Albin Planinc"]
[Black "Jan Hein Donner"]
[ECO "B08"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "122"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be2 Bg7 5.Nf3 O-O 6.O-O Bg4 7.Be3
Nc6 8.Qd2 e5 9.d5 Ne7 10.Rad1 Ne8 11.Bh6 Bd7 12.g3 Kh8
13.Bxg7+ Nxg7 14.Nh4 Ng8 15.Ng2 Qe7 16.Rde1 Rae8 17.f4 exf4
18.Nxf4 a6 19.Nd3 Nf6 20.Bf3 Ng4 21.Bxg4 Bxg4 22.Rf4 Bc8 23.e5
Bf5 24.exd6 Qxd6 25.Rxe8 Rxe8 26.Nf2 h5 27.Kg2 Qe5 28.h3 g5
29.Rb4 Bg6 30.Rxb7 Nf5 31.Nfe4 f6 32.Qf2 Kg7 33.d6 Nxd6
34.Rxc7+ Nf7 35.Rc4 Rb8 36.b3 Rd8 37.Qf3 f5 38.Nf2 Rd2 39.Nb1
Rd6 40.Nd3 Qe7 41.Nc3 Ne5 42.Nxe5 Rd2+ 43.Ne2 Qxe5 44.Kf2 f4
45.gxf4 gxf4 46.Ke1 Rxc2 47.Rxc2 Bxc2 48.Qxf4 Qxf4 49.Nxf4 h4
50.Ng2 Bf5 51.Nxh4 Bxh3 52.Kd2 Kf6 53.Kc3 Ke5 54.Kb4 Kd5
55.Ka5 Bf1 56.Kb6 Kd4 57.Nf5+ Kc3 58.Ne3 Be2 59.Nd5+ Kb2 60.a4
a5 61.Kxa5 Kxb3 1/2-1/2

[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1974.??.??"]
[EventDate "?"]
[Round "15"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Milan Matulovic"]
[ECO "D25"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "32"]

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 Bg4 5.Bxc4 e6 6.h3 Bh5 7.O-O
Nbd7 8.Be2 Bd6 9.Nbd2 O-O 10.b3 e5 11.dxe5 Nxe5 12.Bb2 Re8
13.Nxe5 Bxe2 14.Qxe2 Bxe5 15.Bxe5 Rxe5 16.Nc4 Re7 1/2-1/2

[Event "Nice ol (Men) fin-A"]
[Site "Nice"]
[Date "1974.06.06"]
[EventDate "?"]
[Round "6"]
[Result "1/2-1/2"]
[White "Georgi P Tringov"]
[Black "Jan Hein Donner"]
[ECO "B08"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "71"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Be2 O-O 6.O-O Bg4 7.Be3
Nc6 8.d5 Bxf3 9.Bxf3 Ne5 10.Be2 c6 11.f4 Ned7 12.Bf3 cxd5
13.Nxd5 Nxd5 14.Qxd5 Bxb2 15.Rab1 Nb6 16.Qxb7 Nc4 17.Rxb2 Nxe3
18.Re1 Nc4 19.Rb4 Rb8 20.Qxb8 Qxb8 21.Rxb8 Rxb8 22.e5 dxe5
23.Bd5 Rc8 24.Re4 Na3 25.Rxe5 Rc7 26.Bb3 Nxc2 27.Bxc2 Rxc2
28.Rxe7 Rxa2 29.h4 Kg7 30.h5 Kf6 31.hxg6 hxg6 32.Rc7 Ke6
33.Kh2 a6 34.Kh3 Rd2 35.Ra7 Rd6 36.g4 1/2-1/2

[Event "IBM"]
[Site "Amsterdam"]
[Date "1974.??.??"]
[EventDate "?"]
[Round "11"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "V Tukmakov"]
[ECO "E62"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "104"]

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

[Event "Nice"]
[Site "Nice"]
[Date "1974.??.??"]
[EventDate "?"]
[Round "7"]
[Result "0-1"]
[White "Georgios Trikaliotis"]
[Black "Jan Hein Donner"]
[ECO "B93"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "78"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 e5
7. Nf3 Nbd7 8. Bd3 g6 9. O-O Bg7 10. Kh1 O-O 11. Qe1 b5
12. Qh4 b4 13. Ne2 Bb7 14. fxe5 dxe5 15. Bg5 Qc7 16. Ng3 Kh8
17. Rad1 a5 18. Bb5 Bc6 19. Bxc6 Qxc6 20. Nxe5 Nxe5 21. Rxf6
Qxc2 22. Rdf1 Qxb2 23. R6f2 Qd4 24. Bf6 Rae8 25. Qg5 Bxf6
26. Qxf6+ Kg8 27. Qg5 Qd8 28. Qd2 Ng4 29. Re2 Qh4 30. h3 Qxg3
31. hxg4 Qxg4 32. Rf4 Qh5+ 33. Kg1 Rd8 34. Qe1 Rd3 35. Qf1
Rfd8 36. Rxf7 Rd1 37. Rf8+ Kg7 38. Rf7+ Kh6 39. Re1 Rxe1 0-1

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1974.??.??"]
[EventDate "1974.01.??"]
[Round "1"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Arturo Pomar-Salamanca"]
[ECO "E54"]
[WhiteElo "2480"]
[BlackElo "2435"]
[PlyCount "48"]

1. c4 Nf6 2. Nc3 e6 3. d4 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5
7. O-O dxc4 8. Bxc4 Nc6 9. Bd3 Qe7 10. Ne4 Nxe4 11. Bxe4 Rd8
12. a3 Ba5 13. Qc2 f5 14. Bxc6 bxc6 15. Rd1 Bb6 16. Bd2 Ba6
17. dxc5 Qxc5 18. Bc3 Rxd1+ 19. Rxd1 Rd8 20. Rxd8+ Bxd8
21. Qd2 Qe7 22. Bb4 Qc7 23. Bd6 Qb7 24. h3 Bc4 1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1974.??.??"]
[EventDate "1974.01.??"]
[Round "2"]
[Result "1/2-1/2"]
[White "Miguel A Quinteros"]
[Black "Jan Hein Donner"]
[ECO "B08"]
[WhiteElo "2520"]
[BlackElo "2480"]
[PlyCount "63"]

1. e4 d6 2. Nf3 Nf6 3. Nc3 g6 4. d4 Bg7 5. Be2 O-O 6. O-O c6
7. Be3 Qc7 8. a4 e5 9. dxe5 dxe5 10. a5 Ng4 11. Bc5 Rd8
12. Qc1 Bh6 13. Qb1 Nd7 14. Be7 Re8 15. Bg5 Bg7 16. h3 Ngf6
17. Be3 Nf8 18. Rd1 Nh5 19. Bc5 f6 20. Bc4+ Be6 21. Bxe6+ Nxe6
22. Be3 Qf7 23. Qa2 a6 24. Na4 Rad8 25. Bb6 Rxd1+ 26. Rxd1 Bf8
27. Qc4 Re7 28. Be3 Rd7 29. Rxd7 Qxd7 30. Nc5 Bxc5 31. Bxc5
Nhg7 32. Be3 1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1974.??.??"]
[EventDate "1974.01.??"]
[Round "4"]
[Result "0-1"]
[White "Hans Ree"]
[Black "Jan Hein Donner"]
[ECO "E32"]
[WhiteElo "2440"]
[BlackElo "2480"]
[PlyCount "80"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 O-O 5. a3 Bxc3+ 6. Qxc3
d6 7. Nf3 Re8 8. b4 Nbd7 9. e3 e5 10. Bb2 e4 11. Nd2 d5
12. Be2 Nf8 13. cxd5 Nxd5 14. Qc2 Bf5 15. Nc4 c6 16. g3 Rc8
17. Qb3 Be6 18. Qc2 Rc7 19. Rc1 Bh3 20. Qb3 Be6 21. Qc2 Bh3
22. Qb3 Ne6 23. a4 Ng5 24. b5 cxb5 25. axb5 Bg2 26. Rg1 Nf3+
27. Bxf3 Bxf3 28. Kd2 Bg4 29. Ba3 Re6 30. Rc2 Rf6 31. Kc1 Be6
32. Qa4 Nb6 33. Nxb6 Rxf2 34. Rxc7 Qxc7+ 35. Nc4 h6 36. Bd6
Qc8 37. Bc5 b6 38. Qxa7 Bxc4 39. Qxb6 Ra2 40. Re1 Qa8 0-1

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1974.??.??"]
[EventDate "1974.01.??"]
[Round "5"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Ivan Radulov"]
[ECO "D26"]
[WhiteElo "2480"]
[BlackElo "2530"]
[PlyCount "48"]

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O Nc6
7. Qe2 Qc7 8. Nc3 a6 9. Bd3 Bd6 10. Bd2 O-O 11. dxc5 Bxc5
12. Rac1 Rd8 13. Ne4 Be7 14. Nd4 Bd7 15. Nxf6+ Bxf6 16. Bc3
Qd6 17. Rfd1 Nxd4 18. Bxd4 Bxd4 19. Be4 Bb5 20. Qc2 Qb6
21. exd4 f5 22. Bf3 Rxd4 23. Rxd4 Qxd4 24. Bxb7 Rd8 1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1974.??.??"]
[EventDate "1974.01.??"]
[Round "6"]
[Result "1/2-1/2"]
[White "Kick Langeweg"]
[Black "Jan Hein Donner"]
[ECO "D83"]
[WhiteElo "2430"]
[BlackElo "2480"]
[PlyCount "122"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Bf4 Bg7 5. e3 O-O 6. Rc1 c6
7. Nf3 Bg4 8. Qb3 Qb6 9. Qxb6 axb6 10. cxd5 Nxd5 11. Nxd5 cxd5
12. a3 Nc6 13. Bb5 Rfc8 14. O-O f6 15. h3 Bd7 16. Rc3 g5
17. Bg3 h5 18. Rd1 Kf7 19. Kf1 Ke8 20. Bd3 Kf7 21. Rb3 g4
22. hxg4 hxg4 23. Nd2 e5 24. Rxb6 Rc7 25. Rc1 Rac8 26. Rc5 Ne7
27. Nb3 Ba4 28. Rxc7 Rxc7 29. Nc5 Bc6 30. Rb4 Bh8 31. Ke1 Bg7
32. Bh2 Bh8 33. Be2 Nf5 34. Bxg4 Nd6 35. dxe5 fxe5 36. Bh5+
Ke7 37. Bg3 Rc8 38. Bg4 Rg8 39. f3 Bf6 40. Rb3 Ne4 41. Nxe4
dxe4 42. Ke2 exf3+ 43. gxf3 e4 44. Bc7 b5 45. Rb4 Rg7 46. Bb6
Rh7 47. Bc5+ Kf7 48. fxe4 Bxb2 49. Rb3 Bxe4 50. Bd6 Bg7
51. Rxb5 Bf8 52. Bh5+ Rxh5 53. Rxh5 Bxd6 54. a4 Ke7 55. Rh4
Bc6 56. Kd3 Kd7 57. Rh7+ Kc8 58. a5 Bb4 59. Rh5 Kb7 60. Kc4
Bd2 61. Re5 Ka6 1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1974.??.??"]
[EventDate "1974.01.??"]
[Round "7"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Hans-Joachim Hecht"]
[ECO "E45"]
[WhiteElo "2480"]
[BlackElo "2505"]
[PlyCount "51"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Nge2 Ba6 6. Ng3
Bxc3+ 7. bxc3 d5 8. Qf3 O-O 9. cxd5 exd5 10. Bxa6 Nxa6 11. Qe2
Qc8 12. O-O Re8 13. c4 c5 14. Bb2 cxd4 15. cxd5 Nb4 16. Rac1
Qd7 17. Bxd4 Nbxd5 18. e4 Nxe4 19. Qb2 Nf4 20. Be3 Nxg3
21. hxg3 Ne6 22. Rfd1 Qb7 23. Qb5 Red8 24. a4 Qe7 25. Rxd8+
Rxd8 26. a5 1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1974.??.??"]
[EventDate "1974.01.??"]
[Round "10"]
[Result "0-1"]
[White "Gyozo V Forintos"]
[Black "Jan Hein Donner"]
[ECO "D37"]
[WhiteElo "2460"]
[BlackElo "2480"]
[PlyCount "80"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bf4 O-O 6. e3 b6
7. Bd3 Bb7 8. O-O c5 9. Qe2 cxd4 10. Nxd4 Nbd7 11. cxd5 Nxd5
12. Nxd5 Bxd5 13. e4 Bb7 14. Rfd1 Bc5 15. Nf3 Qe7 16. Bb5 Nb8
17. a3 a5 18. Rac1 Ba6 19. Bxa6 Nxa6 20. Ne5 Rfd8 21. Rxd8+
Qxd8 22. Rd1 Qe8 23. Nd7 Rd8 24. Qxa6 Rxd7 25. Rxd7 Qxd7
26. Qa8+ Bf8 27. h3 h6 28. Be3 Qb5 29. Bd4 e5 30. Bc3 f6
31. g4 Kf7 32. Kg2 Qd7 33. Qd5+ Qxd5 34. exd5 a4 35. f4 exf4
36. Kf3 Bd6 37. Bd4 b5 38. Ke4 Be5 39. Bc5 Ke8 40. h4 Kd7 0-1

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1974.??.??"]
[EventDate "1974.01.??"]
[Round "11"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Theodor Ghitescu"]
[ECO "E92"]
[WhiteElo "2480"]
[BlackElo "2455"]
[PlyCount "113"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Be2 O-O 6. Nf3 e5
7. d5 Na6 8. Be3 Nh5 9. g3 f5 10. exf5 gxf5 11. Nh4 Nf6
12. O-O Nc5 13. Ng2 Nce4 14. Nxe4 Nxe4 15. Qc1 Qf6 16. Rb1 f4
17. gxf4 Bh3 18. f5 Qxf5 19. Kh1 Kh8 20. f3 Bxg2+ 21. Kxg2 Bh6
22. fxe4 Rg8+ 23. Kh1 Qxe4+ 24. Bf3 Qxe3 25. Qxe3 Bxe3
26. Rbe1 Bd4 27. b3 Raf8 28. Bg2 Bf2 29. Re2 Bc5 30. Ree1 Rf4
31. Rxf4 exf4 32. Bf3 Be3 33. h3 Rg3 34. Bg4 h5 35. Bf5 Kg7
36. Kh2 Kf6 37. Bd3 Bg1+ 38. Rxg1 Rxd3 39. h4 Rd2+ 40. Kh3
Rxa2 41. Rg5 Rb2 42. Rxh5 Kg6 43. Rg5+ Kh6 44. Kg4 Rg2+
45. Kxf4 Rxg5 46. hxg5+ Kg6 47. Kg4 a6 48. Kf4 c5 49. dxc6
bxc6 50. b4 Kg7 51. Kf5 Kf7 52. g6+ Kg7 53. Kg5 d5 54. cxd5
cxd5 55. Kf5 d4 56. Ke4 Kxg6 57. Kxd4 1-0

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1974.??.??"]
[EventDate "1974.01.??"]
[Round "12"]
[Result "1/2-1/2"]
[White "Walter Shawn Browne"]
[Black "Jan Hein Donner"]
[ECO "B90"]
[WhiteElo "2530"]
[BlackElo "2480"]
[PlyCount "61"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bc4 e6
7. Bb3 Be7 8. O-O O-O 9. f4 Nc6 10. Be3 Nxd4 11. Bxd4 b5
12. e5 dxe5 13. fxe5 Nd7 14. Ne4 Bb7 15. Nd6 Bxd6 16. exd6 Qg5
17. Qe2 e5 18. Be3 Qg6 19. Rad1 Kh8 20. h4 f5 21. h5 Qf6
22. a4 f4 23. Qg4 Bc6 24. Be6 Rad8 25. Bf2 Qh6 26. Bh4 Nf6
27. Qg5 Qxg5 28. Bxg5 h6 29. Bh4 Bd7 30. Bxd7 Rxd7 31. axb5
1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1974.??.??"]
[EventDate "1974.01.??"]
[Round "13"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Bertus F Enklaar"]
[ECO "D31"]
[WhiteElo "2480"]
[BlackElo "2445"]
[PlyCount "85"]

1. d4 d5 2. c4 e6 3. Nc3 Be7 4. cxd5 exd5 5. Bf4 c6 6. e3 Bf5
7. g4 Be6 8. h3 Nf6 9. Bd3 O-O 10. g5 Nfd7 11. h4 c5 12. Kf1
Nc6 13. Nge2 Re8 14. Rc1 a6 15. Bb1 Nf8 16. Kg2 Rc8 17. Qd2 c4
18. e4 b5 19. e5 Qd7 20. Ng3 Bb4 21. Qd1 Ne7 22. Nce2 Ba5
23. h5 Nf5 24. Bd2 Bd8 25. f4 g6 26. Qg1 a5 27. Qf2 b4 28. Bc2
Bb6 29. a3 bxa3 30. bxa3 Rb8 31. Bc3 Rb7 32. Qf3 Nxg3 33. Nxg3
Bg4 34. Qe3 Qe7 35. f5 Bd8 36. hxg6 fxg6 37. Bd2 Rb2 38. Qc3
Ra2 39. Ra1 Rxa1 40. Rxa1 Bxf5 41. Bxf5 gxf5 42. Nxf5 Qe6
43. Nd6 1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1974.??.??"]
[EventDate "1974.01.??"]
[Round "14"]
[Result "1/2-1/2"]
[White "Gennady Sosonko"]
[Black "Jan Hein Donner"]
[ECO "E04"]
[WhiteElo "2430"]
[BlackElo "2480"]
[PlyCount "36"]

1. d4 Nf6 2. Nf3 d5 3. c4 e6 4. g3 dxc4 5. Bg2 a6 6. a4 Nc6
7. O-O Be7 8. Na3 Na5 9. Qc2 Nb3 10. Rb1 Nxd4 11. Nxd4 Qxd4
12. Rd1 Qa7 13. Nxc4 Nd5 14. Bxd5 exd5 15. Rxd5 Be6 16. Be3 b6
17. Rd2 Qb7 18. Ne5 Bb4 1/2-1/2

[Event "FRG-NED"]
[Site "Bad Aibling FRG"]
[Date "1974.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Wolfgang Unzicker"]
[ECO "E54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "43"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 c5 7.O-O
dxc4 8.Bxc4 Nc6 9.a3 Ba5 10.Ba2 Qe7 11.Qc2 cxd4 12.exd4 Rd8
13.Be3 h6 14.Rad1 Bxc3 15.Qxc3 Bd7 16.Rfe1 Rac8 17.Ne5 Nd5
18.Qd2 Nxe3 19.Rxe3 Be8 20.Nxc6 Bxc6 21.Rg3 Qh4 22.Bb1 1/2-1/2

[Event "FRG-NED"]
[Site "Bad Aibling FRG"]
[Date "1974.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Wolfgang Unzicker"]
[Black "Jan Hein Donner"]
[ECO "B14"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "35"]

1.e4 c6 2.c4 d5 3.exd5 cxd5 4.d4 Nf6 5.Nc3 e6 6.Nf3 Be7 7.Bg5
O-O 8.Rc1 b6 9.Bd3 dxc4 10.Bxc4 Bb7 11.O-O Nc6 12.a3 Rc8
13.Qd3 Na5 14.Ba6 Bxa6 15.Qxa6 Nb3 16.Rcd1 Na5 17.Rc1 Nb3
18.Rcd1 1/2-1/2

[Event "It (a)"]
[Site "Wijk aan Zee (Netherlands)"]
[Date "1975.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Walter Shawn Browne"]
[ECO "A58"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "72"]

1.d4 c5 2.d5 Nf6 3.c4 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 d6 7.g3
Nbd7 8.Nf3 g6 9.Bg2 Bg7 10.O-O O-O 11.Qc2 Qa5 12.Bd2 Rfb8
13.h3 Ne8 14.Rfe1 Nc7 15.b3 c4 16.Rac1 cxb3 17.axb3 Nb5
18.Nxb5 Qxb5 19.Qe4 Re8 20.Nd4 Nc5 21.Nxb5 Nxe4 22.Bxe4 Bxb5
23.Rc2 Rec8 24.Rxc8+ Rxc8 25.b4 Ra8 26.Bd3 Bxd3 27.exd3 Ra2
28.Bf4 Bd4 29.Be3 Bxe3 30.Rxe3 Kf8 31.Re4 f5 32.Rd4 Kf7 33.Kg2
Kf6 34.Kf3 g5 35.Ke3 h6 36.Rc4 Rb2 1/2-1/2

[Event "It (a), Wijk aan Zee (Netherlands)"]
[Site "It (a), Wijk aan Zee (Netherlands)"]
[Date "1975.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Lajos Portisch"]
[Black "Jan Hein Donner"]
[ECO "E88"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "51"]

1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. e4 O-O 5. Be3 d6 6. f3 e5
7. d5 c6 8. Bd3 cxd5 9. cxd5 Ne8 10. Qd2 f5 11. exf5 gxf5
12. Nge2 Nd7 13. O-O Nc5 14. Bc2 a5 15. f4 exf4 16. Nxf4 Be5
17. Rae1 Qf6 18. Nh3 b6 19. Bg5 Qg6 20. Bf4 Bf6 21. Rf3 Kh8
22. Rg3 Qh5 23. Bd1 Qh4 24. Ng5 Ne4 25. Ngxe4 fxe4 26. Nxe4
1-0

[Event "Wijk aan Zee"]
[Site "10"]
[Date "1975.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Efim Geller"]
[ECO "E58"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "38"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 c5 6.Nf3 d5 7.O-O
Nc6 8.a3 Bxc3 9.bxc3 Qc7 10.cxd5 exd5 11.Nh4 Ne7 12.a4 Re8
13.Ba3 c4 14.Bc2 Bd7 15.Qe1 Ng6 16.Nf5 Ne4 17.Ng3 Nxg3 18.hxg3
Ne7 19.Qb1 g6 1/2-1/2

[Event "Wijk aan Zee"]
[Site "Wijk aan Zee"]
[Date "1975.??.??"]
[EventDate "?"]
[Round "9"]
[Result "1-0"]
[White "Vlastimil Hort"]
[Black "Jan Hein Donner"]
[ECO "B06"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "71"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be3 Bg7 5.Qd2 e5 6.dxe5 dxe5
7.Qxd8+ Kxd8 8.Bc4 Ng4 9.Rd1+ Nd7 10.Bxf7 Nxe3 11.fxe3 Ke7
12.Bc4 c6 13.a4 a5 14.h3 Nb6 15.Bb3 Be6 16.Bxe6 Kxe6 17.b3 Bf8
18.Ke2 Be7 19.Nf3 Rad8 20.h4 Rxd1 21.Nxd1 h5 22.Nb2 Nd7 23.Nc4
Ra8 24.Rd1 Bc5 25.Ng5+ Ke7 26.Rf1 b5 27.Rf7+ Ke8 28.Nb2 Bf8
29.Rh7 Rb8 30.Ne6 Be7 31.Nc7+ Kd8 32.Ne6+ Ke8 33.g3 Bf6
34.axb5 cxb5 35.Nc7+ Kd8 36.Nd5 1-0

[Event "Wijk aan Zee"]
[Site "Wijk aan Zee"]
[Date "1975.??.??"]
[EventDate "?"]
[Round "5"]
[Result "1/2-1/2"]
[White "Gennady Sosonko"]
[Black "Jan Hein Donner"]
[ECO "A56"]
[WhiteElo "2470"]
[BlackElo "2485"]
[PlyCount "29"]

1. d4 Nf6 2. c4 c5 3. d5 d6 4. Nc3 g6 5. e4 Bg7 6. Nf3 O-O
7. Be2 e5 8. O-O Ne8 9. Ne1 f5 10. exf5 gxf5 11. Nd3 Nd7
12. f4 e4 13. Nf2 Bxc3 14. bxc3 Ndf6 15. Kh1 1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1975.??.??"]
[EventDate "1975.01.??"]
[Round "8"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Jan Timman"]
[ECO "E44"]
[WhiteElo "2485"]
[BlackElo "2510"]
[PlyCount "76"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Nge2 Ne4 6. Qc2 f5
7. g3 Nxc3 8. Nxc3 Bb7 9. d5 b5 10. Bg2 bxc4 11. O-O O-O
12. Rd1 e5 13. Bf1 d6 14. Bxc4 Nd7 15. Na4 Ba5 16. b4 Bb6
17. Bb5 Nf6 18. Nxb6 axb6 19. a4 Kh8 20. Bc6 Bxc6 21. dxc6 Qe8
22. f3 Qh5 23. Rf1 h6 24. b5 Nh7 25. f4 exf4 26. exf4 Rfe8
27. Ra2 Re4 28. a5 bxa5 29. Ba3 Qf7 30. Rc1 Qd5 31. b6 cxb6
32. Qf2 Rd4 33. Re2 Nf6 34. Bb2 Rd1+ 35. Rxd1 Qxd1+ 36. Re1
Qd5 37. Bxf6 gxf6 38. Qxb6 Rc8 1/2-1/2

[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1975.??.??"]
[EventDate "?"]
[Round "6"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Jan Smejkal"]
[ECO "D71"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "142"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d5 5.cxd5 Nxd5 6.e4 Nb4 7.d5
c6 8.a3 Qa5 9.Nc3 cxd5 10.Be3 d4 11.axb4 Qd8 12.Bxd4 Bxd4
13.Nge2 Bb6 14.Nd5 O-O 15.O-O Be6 16.Nxb6 Qxb6 17.Qd4 Na6
18.Qxb6 axb6 19.b5 Nc5 20.Nd4 Bc4 21.Rxa8 Rxa8 22.Rc1 Bd3
23.e5 Ra4 24.Nf3 Rb4 25.Ne1 Bxb5 26.Rc2 g5 27.Bf1 Bxf1 28.Kxf1
Kg7 29.f3 h5 30.h3 Kg6 31.g4 Rb3 32.Rd2 h4 33.Kf2 b5 34.Ke2 b6
35.Kf2 Kg7 36.Ke2 Kf8 37.Kf2 Ke8 38.Ke2 Kf8 39.Kf2 Kg8 40.Ke2
Kh7 41.Kf2 Kh8 42.Ke2 Kg8 43.Kf2 Kh8 44.Ke2 Kg8 45.Kf2 Kf8
46.Ke2 Kg7 47.Kf2 Kh7 48.Ke2 Kh8 49.Kf2 Kh7 50.Ke2 Kh6 51.Kf2
Kg7 52.Ke2 Kh7 53.Kf2 Kh6 54.Ke2 Kg7 55.Kf2 f6 56.exf6+ Kxf6
57.Ke2 e6 58.Kd1 Ke7 59.Re2 Na4 60.Kc1 Kf6 61.Rf2 e5 62.Re2
Nc5 63.Kc2 e4 64.fxe4 Rxh3 65.Rf2+ Ke7 66.Rf5 Ne6 67.Kd2 Rh2+
68.Kc3 h3 69.Nd3 Rg2 70.Rf3 Nf4 71.Nxf4 gxf4 0-1

[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1975.??.??"]
[EventDate "?"]
[Round "13"]
[Result "1-0"]
[White "Svetozar Gligoric"]
[Black "Jan Hein Donner"]
[ECO "D19"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "65"]

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.e3 e6 7.Bxc4
Bb4 8.O-O Nbd7 9.Qe2 Bg6 10.e4 Bxc3 11.bxc3 Nxe4 12.Ba3 Qc7
13.Qe3 Nb6 14.Ne5 Nxc4 15.Nxc4 O-O-O 16.a5 Nf6 17.Rfe1 Nd5
18.Qc1 Nf4 19.Qd2 f6 20.Bc5 Bd3 21.Nb2 Ba6 22.Bxa7 Rd5 23.g3
Nh3+ 24.Kg2 Rh5 25.c4 Qf7 26.Bb6 f5 27.f3 f4 28.Re5 g5 29.g4
Rh4 30.d5 exd5 31.Rae1 h5 32.Re7 Qg8 33.Qc2 1-0

[Event "Hoogovens"]
[Site "Wijk aan Zee"]
[Date "1975.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "F Kuijpers"]
[ECO "E54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "88"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 c5 7.O-O
cxd4 8.exd4 dxc4 9.Bxc4 b6 10.Re1 Bb7 11.Bd3 Nbd7 12.Bd2 Be7
13.Qe2 Nd5 14.Rac1 N7f6 15.Ne4 Rc8 16.Ne5 Rxc1 17.Rxc1 Qb8
18.Nc3 Nxc3 19.bxc3 Qd6 20.f3 Rc8 21.Ba6 Bxa6 22.Qxa6 Rc7
23.Qa4 Qa3 24.Qb3 h6 25.Nd3 Qa6 26.c4 Nd7 27.Bf4 Rc8 28.a4 Bf6
29.Be3 Rd8 30.Nb4 Qb7 31.d5 Nc5 32.Qc2 exd5 33.Nxd5 Be5 34.Rb1
Qa6 35.a5 Rxd5 36.cxd5 Qxa5 37.Bf2 Bd6 38.Bg3 Bf8 39.h4 Qa6
40.Qf5 Qa2 41.h5 Qd2 42.Re1 Qd4+ 43.Kh2 Qa4 44.Qc8 Nd7 1-0

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1975.??.??"]
[EventDate "1975.01.??"]
[Round "2"]
[Result "1/2-1/2"]
[White "Luben S Popov"]
[Black "Jan Hein Donner"]
[ECO "D58"]
[WhiteElo "2460"]
[BlackElo "2485"]
[PlyCount "31"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 Be7 5. Bg5 O-O 6. e3 h6
7. Bh4 b6 8. Rc1 Bb7 9. Bxf6 Bxf6 10. cxd5 exd5 11. Be2 Nd7
12. Qb3 c6 13. O-O Re8 14. Bd3 Nf8 15. Rfd1 Ne6 16. Bb1
1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1975.??.??"]
[EventDate "1975.01.??"]
[Round "3"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Lubomir Kavalek"]
[ECO "E91"]
[WhiteElo "2485"]
[BlackElo "2555"]
[PlyCount "31"]

1. d4 Nf6 2. c4 c5 3. d5 d6 4. Nc3 g6 5. e4 Bg7 6. Be2 O-O
7. Nf3 e6 8. O-O Re8 9. h3 exd5 10. exd5 Bf5 11. Bd3 Ne4
12. Nxe4 Bxe4 13. Bxe4 Rxe4 14. Qc2 Re8 15. Bd2 Nd7 16. Bc3
1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1975.??.??"]
[EventDate "1975.01.??"]
[Round "11"]
[Result "1-0"]
[White "Kick Langeweg"]
[Black "Jan Hein Donner"]
[ECO "D13"]
[WhiteElo "2410"]
[BlackElo "2485"]
[PlyCount "79"]

1. Nf3 d5 2. c4 c6 3. d4 Nf6 4. cxd5 cxd5 5. Nc3 Nc6 6. Bf4 e6
7. e3 Be7 8. Bd3 O-O 9. O-O Bd7 10. h3 Qb6 11. a3 Rfc8 12. Na4
Qd8 13. b4 a5 14. b5 Na7 15. Ne5 Be8 16. Bg5 b6 17. Qb3 h6
18. Bh4 g5 19. Bg3 Ne4 20. Ra2 f6 21. Bxe4 fxe5 22. Bxe5 Nxb5
23. Bb1 Ra7 24. e4 Bf6 25. Rd2 Rc4 26. exd5 exd5 27. Nb2 Rc3
28. Bxf6 Qxf6 29. Qxd5+ Qf7 30. Qd8 Rd7 31. Qxb6 Rd6 32. Qb8
Qe7 33. Ba2+ Kg7 34. Nc4 Rd8 35. Qb6 a4 36. Ne3 Qd7 37. Nf5+
Qxf5 38. Qxd8 Qf8 39. Re1 Bf7 40. Qd7 1-0

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1975.??.??"]
[EventDate "1975.01.??"]
[Round "12"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Hans Ree"]
[ECO "E60"]
[WhiteElo "2485"]
[BlackElo "2470"]
[PlyCount "75"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 c6 6. e4 d6
7. Nge2 e5 8. O-O a6 9. dxe5 dxe5 10. c5 Be6 11. Qc2 a5
12. Na4 Na6 13. a3 Qe7 14. Bd2 Nd7 15. Be3 f5 16. Rab1 Qf7
17. b4 axb4 18. axb4 Nc7 19. Nac3 Nf6 20. f3 fxe4 21. fxe4 Qe7
22. h3 Bc4 23. Rfd1 Nh5 24. Kh2 Ne6 25. Nd5 cxd5 26. exd5 Bxe2
27. Qxe2 Nef4 28. Bxf4 Nxf4 29. gxf4 Rxf4 30. d6 Qh4 31. Rf1
e4 32. Qe1 Be5 33. Kg1 Qg5 34. Qe2 Qg3 35. Rxf4 Bxf4 36. Qg4
Qh2+ 37. Kf1 e3 38. Qe6+ 1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1975.??.??"]
[EventDate "1975.01.??"]
[Round "14"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Semyon Abramovich Furman"]
[ECO "E55"]
[WhiteElo "2485"]
[BlackElo "2560"]
[PlyCount "36"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 O-O 5. Bd3 d5 6. Nf3 c5
7. O-O dxc4 8. Bxc4 Nbd7 9. Qe2 a6 10. a3 Ba5 11. Bd3 Qe7
12. Bd2 Bc7 13. Rae1 Rd8 14. Qd1 b5 15. Ne4 Nxe4 16. Bxe4 Rb8
17. Bb1 Nf8 18. b4 cxb4 1/2-1/2

[Event "Wijk aan Zee I"]
[Site "?"]
[Date "1975.??.??"]
[EventDate "1975.01.??"]
[Round "15"]
[Result "1-0"]
[White "Robert Huebner"]
[Black "Jan Hein Donner"]
[ECO "A13"]
[WhiteElo "2615"]
[BlackElo "2485"]
[PlyCount "75"]

1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4
c5 7. O-O a6 8. Qc2 b6 9. Nc3 Bb7 10. Rd1 Rc8 11. e4 b5 12. d3
Be7 13. b3 O-O 14. Bb2 Qb6 15. Qe2 Rfd8 16. e5 Nd5 17. Ne4 Nb8
18. Rac1 Nc6 19. h4 Nd4 20. Nxd4 cxd4 21. Qg4 Rxc1 22. Bxc1
Nc3 23. Re1 Nxa2 24. Bh6 g6 25. h5 Bxe4 26. Bxe4 Bf8 27. hxg6
fxg6 28. Bxf8 Kxf8 29. Kg2 Nc3 30. Rh1 Rd7 31. Bxg6 Qb7+
32. f3 Rg7 33. Qxd4 Rxg6 34. Qxc3 Rg7 35. Rc1 Rd7 36. Qb4+ Ke8
37. Qg4 Ke7 38. Qg7+ 1-0

[Event "Anglo-Dutch Match"]
[Site "?"]
[Date "1975.??.??"]
[EventDate "2009.04.28"]
[Round "?"]
[Result "1/2-1/2"]
[White "Raymond Keene"]
[Black "Jan Hein Donner"]
[ECO "E94"]
[WhiteElo "2455"]
[BlackElo "?"]
[PlyCount "115"]

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 O-O 5. Be2 d6 6. Nf3 e5
7. O-O c6 8. Be3 Ng4 9. Bg5 f6 10. Bh4 Nh6 11. dxe5 dxe5
12. Qxd8 Rxd8 13. Rfd1 Nf7 14. Ne1 Nd7 15. Nc2 Nf8 16. f3 Ne6
17. Rxd8+ Nfxd8 18. Rd1 Nf7 19. b4 Nf4 20. Bf1 Be6 21. Bf2 Bf8
22. Na4 b6 23. Nc3 Nd6 24. c5 Nc4 25. Bxc4 Bxc4 26. Rd7 Bd3
27. Ne3 h5 28. g3 Ne2+ 29. Kg2 Nxc3 30. Rxd3 Nb5 31. Nc4 bxc5
32. bxc5 Rb8 33. Na5 Nd4 34. Bxd4 exd4 35. Nb3 Rb5 36. Rxd4
Bxc5 37. Rc4 Bb6 38. Rxc6 Kf7 39. Rc4 f5 40. Kf1 fxe4 41. Rxe4
Rd5 42. Ke2 Kf6 43. Nd2 g5 44. a4 Rc5 45. Nc4 Bc7 46. Kd3 Rf5
47. Ke3 Rd5 48. Re8 h4 49. Rf8+ Ke6 50. gxh4 Bxh2 51. hxg5
Bg1+ 52. Ke2 Rxg5 53. Re8+ Kf6 54. Re4 Rd5 55. Rg4 Bc5 56. Nd2
Bd6 57. Rc4 Kf5 58. Ne4 1/2-1/2

[Event "Amsterdam IBM"]
[Site "3"]
[Date "1976.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Borislav Ivkov"]
[Black "Jan Hein Donner"]
[ECO "A14"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "115"]

1.Nf3 d5 2.c4 e6 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.d4 dxc4 7.Ne5
Nc6 8.Nxc6 bxc6 9.Bxc6 Rb8 10.Nc3 Nd5 11.Qa4 Nb4 12.Bg2 Rb6
13.a3 Ra6 14.Qb5 Nc2 15.Rb1 Nxd4 16.Qxc4 c5 17.b4 cxb4 18.axb4
Nf5 19.Rd1 Rd6 20.Bf4 Rxd1+ 21.Rxd1 Qb6 22.b5 Rd8 23.Rxd8+
Qxd8 24.Bb8 Bb7 25.Bxa7 Bxg2 26.Kxg2 Qa8+ 27.e4 Nh4+ 28.gxh4
Qxa7 29.Qc8+ Bf8 30.Qc6 Bc5 31.e5 h6 32.Ne4 Bd4 33.Qd6 Qa1
34.b6 Bxe5 35.Qb4 Qd1 36.Qb5 Qg4+ 37.Ng3 Qf4 38.h5 Bb8 39.b7
Ba7 40.Qb2 Kh7 41.Qa2 Bb8 42.Qc2+ Kg8 43.Qc8+ Kh7 44.Qc5 Kg8
45.h3 Bd6 46.Qc8+ Kh7 47.Qc2+ Kg8 48.Qc6 Bb8 49.Kf1 Ba7 50.Ne4
Qf3 51.Qa4 Bb8 52.Qe8+ Kh7 53.Nf6+ gxf6 54.Qxf7+ Kh8 55.Qf8+
Kh7 56.Qf7+ Kh8 57.Qe8+ Kg7 58.Qe7+ 1/2-1/2

[Event "Amsterdam IBM"]
[Site "Amsterdam IBM"]
[Date "1976.??.??"]
[EventDate "?"]
[Round "6"]
[Result "1-0"]
[White "Viktor Korchnoi"]
[Black "Jan Hein Donner"]
[ECO "B07"]
[WhiteElo "2670"]
[BlackElo "2475"]
[PlyCount "51"]

1. e4 d6 2. d4 Nf6 3. f3 e5 4. Ne2 Be7 5. c4 O-O 6. Nbc3 c6
7. Be3 a6 8. d5 cxd5 9. cxd5 Ne8 10. Qd2 Nd7 11. Ng3 g6
12. Be2 Ng7 13. O-O b5 14. b4 f5 15. exf5 gxf5 16. f4 Bf6
17. Rad1 exf4 18. Bxf4 Ne5 19. Bh6 Ng4 20. Bxg4 fxg4 21. Nce4
Be5 22. Rxf8+ Qxf8 23. Rf1 Qe7 24. Bf4 Bxf4 25. Qxf4 Bd7
26. Nf6+ 1-0

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1976.??.??"]
[EventDate "?"]
[Round "10"]
[Result "1/2-1/2"]
[White "Anthony Miles"]
[Black "Jan Hein Donner"]
[ECO "C02"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "115"]

1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Qb6 6.Be2 Nh6 7.Bxh6
gxh6 8.Qd2 Bd7 9.O-O Bg7 10.Re1 O-O 11.Bd3 f6 12.exf6 Rxf6
13.Ne5 Nxe5 14.dxe5 Rf7 15.Qc2 Bf8 16.c4 Be7 17.Nc3 Bc6
18.cxd5 Bxd5 19.Be4 Bxe4 20.Nxe4 Rd8 21.Rad1 Rd5 22.Nc3 Rd4
23.Re4 Rxd1+ 24.Nxd1 Rf8 25.Nc3 Rd8 26.Qe2 Rd4 27.Qg4+ Kf8
28.Rf4+ Rxf4 29.Qxf4+ Ke8 30.b3 Qd8 31.Qxh6 Qd4 32.Qh5+ Kd7
33.Qd1 Kc6 34.Qf3+ Kb6 35.g3 Qxe5 36.Qd3 h5 37.h4 a6 38.Kg2
Kc7 39.a4 Kb6 40.Qf3 Kc7 41.Qd3 Kb6 42.Kf1 Bf6 43.Ne4 Be7
44.Ke2 Qd5 45.Nd2 Kc6 46.Nc4 b5 47.axb5 axb5 48.Ne3 Qxd3+
49.Kxd3 Bf6 50.Ke4 Kd6 51.Ng2 Be5 52.Nf4 Bxf4 53.Kxf4 e5
54.Kf5 c4 55.bxc4 b4 56.Ke4 Kc5 57.Kd3 e4 58.Kd2 1/2-1/2

[Event "Amsterdam IBM"]
[Site "7"]
[Date "1976.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Laszlo Szabo"]
[ECO "D86"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "78"]

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.bxc3 Bg7
7.Bc4 O-O 8.Ne2 b6 9.h4 Nc6 10.Be3 Na5 11.Bd3 e5 12.Qd2 exd4
13.Bxd4 Qe7 14.Bxg7 Kxg7 15.h5 Bb7 16.Qe3 Rae8 17.hxg6 fxg6
18.f3 Kg8 19.O-O Rf5 20.Rfd1 Rh5 21.Qd4 Rc5 22.Rac1 Qg5 23.Rc2
Rf8 24.Kf1 Bc8 25.Nc1 Be6 26.Be2 Nc6 27.Qd2 Qh4 28.Nd3 Rg5
29.Qe3 Rg3 30.Qf2 Qh2 31.Ne1 Ne5 32.Rd4 Ng4 33.Qg1 Qh6 34.Rcd2
Qh4 35.Ba6 Nh2+ 36.Ke2 Nxf3 37.Nxf3 Rfxf3 38.Kd1 Rxc3 39.Be2
Bg4 0-1

[Event "Haifa ol"]
[Site "06"]
[Date "1976.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "James E Tarjan"]
[ECO "E52"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "95"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 b6 7.O-O
Bb7 8.cxd5 exd5 9.Ne5 Nbd7 10.f4 c5 11.Bd2 Ne4 12.Nxe4 dxe4
13.Bc4 Nxe5 14.fxe5 Bxd2 15.Qxd2 Bd5 16.Ba6 Qg5 17.dxc5 Rfd8
18.Qc3 bxc5 19.Rfd1 Qg6 20.Bf1 Qb6 21.b3 h6 22.Rd2 Be6 23.Rad1
a5 24.Rxd8+ Rxd8 25.Rxd8+ Qxd8 26.a3 Qb6 27.Bc4 Bxc4 28.Qxc4
Kf8 29.Kf2 Kg8 30.Ke1 Qg6 31.g3 Qh5 32.Qxc5 Qxh2 33.b4 Qxg3+
34.Kd2 Qf2+ 35.Kc3 axb4 36.axb4 h5 37.b5 Qe1+ 38.Kc4 Qe2+
39.Kd5 Qd3+ 40.Kc6 Qd8 41.b6 Qc8+ 42.Kb5 Qd7+ 43.Ka6 Qa4+
44.Qa5 Qc6 45.Ka7 g6 46.b7 Qd7 47.Qc5 Kh7 48.Kb6 1-0

[Event "5, Leeuwarden NED ch"]
[Site "5, Leeuwarden NED ch"]
[Date "1976.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Jan Timman"]
[Black "Jan Hein Donner"]
[ECO "C72"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "45"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.O-O b5 6.Bb3 Na5 7.d4
Nxb3 8.axb3 f6 9.Nc3 Bb7 10.Be3 Ne7 11.dxe5 dxe5 12.Qe2 Nc6
13.Rfd1 Qe7 14.Ne1 Nd8 15.Nd5 Bxd5 16.exd5 Qd7 17.c4 bxc4
18.bxc4 Nb7 19.b4 Nd6 20.b5 a5 21.Rab1 Ne4 22.Qc2 Nc5 23.d6
1-0

[Event "IBM"]
[Site "Amsterdam"]
[Date "1976.??.??"]
[EventDate "?"]
[Round "4"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Dragoljub Velimirovic"]
[ECO "A77"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "63"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 g6 6.Nf3 Bg7 7.e4
d6 8.Be2 O-O 9.O-O Re8 10.Nd2 Nbd7 11.Qc2 Ne5 12.a4 a6 13.Ra3
Qe7 14.h3 g5 15.Nf3 g4 16.hxg4 Bxg4 17.Nh2 Bd7 18.Re1 Rac8
19.Rb3 b5 20.axb5 axb5 21.Rxb5 Bxb5 22.Bxb5 Nfg4 23.Nf1 c4
24.Bxe8 Rxe8 25.Nd1 Qh4 26.Re2 Ng6 27.Qxc4 Be5 28.g3 Qh3 29.f3
Bxg3 30.fxg4 Nh4 31.Qc3 Rxe4 32.Nxg3 1-0

[Event "NED-ch31"]
[Site "Leeuwarden"]
[Date "1976.??.??"]
[EventDate "?"]
[Round "8"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "F Kuijpers"]
[ECO "E58"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "83"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.Nf3 c5 7.O-O
Nc6 8.a3 Bxc3 9.bxc3 Qc7 10.cxd5 exd5 11.Nh4 Ne7 12.a4 Re8
13.Ba3 c4 14.Bxe7 Rxe7 15.Bc2 Bd7 16.Nf5 Bxf5 17.Bxf5 g6
18.Bc2 Ne4 19.Bxe4 Rxe4 20.Rb1 Rd8 21.Rb5 a6 22.Rc5 Qd7 23.a5
Rc8 24.Rxc8+ Qxc8 25.Qb1 Qc7 26.Qb4 Re7 27.Rb1 Kg7 28.Qb6 Qd7
29.Qc5 Re6 30.h3 Rc6 31.Qa7 Rc7 32.Qb8 h5 33.Rb2 Qe7 34.Rb4
Kh7 35.Kh1 h4 36.f3 f5 37.Rb6 Kg7 38.Re6 Qxe6 39.Qxc7+ Kf6
40.Qd8+ Kg7 41.Qg5 b6 42.axb6 1/2-1/2

[Event "IBM Tournament"]
[Site "The Netherlands"]
[Date "1976.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Gyula Sax"]
[Black "Jan Hein Donner"]
[ECO "C13"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "35"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.h4 O-O 7.Bd3
f5 8.g4 c5 9.gxf5 cxd4 10.f6 Nxf6 11.exf6 Bxf6 12.Qh5 g6
13.Bxg6 Qe7 14.Nb5 Nc6 15.Bd3 e5 16.Ne2 Kh8 17.Nc7 Qxc7
18.Bxf6+ 1-0

[Event "Amsterdam IBM I"]
[Site "Amsterdam IBM I"]
[Date "1976.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1-0"]
[White "Fridrik Olafsson"]
[Black "Jan Hein Donner"]
[ECO "D37"]
[WhiteElo "2570"]
[BlackElo "?"]
[PlyCount "59"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. d4 Be7 5. g3 O-O 6. Bg2 dxc4
7. Ne5 c5 8. dxc5 Qxd1+ 9. Nxd1 Bxc5 10. Nxc4 Nc6 11. O-O Bd7
12. Nc3 Rad8 13. Bf4 b6 14. Rfd1 Ne7 15. Ne5 Bc8 16. Nd3 Nfd5
17. Nxc5 Nxf4 18. gxf4 bxc5 19. e3 Ba6 20. Ne4 c4 21. Nc5 Bb5
22. Rac1 Nd5 23. a4 Rc8 24. Nxe6 fxe6 25. axb5 Rc5 26. Rd4
Rfc8 27. f5 Nb6 28. fxe6 Re8 29. Rd6 Re5 30. Ra1 1-0

[Event "Amsterdam IBM I"]
[Site "Amsterdam IBM I"]
[Date "1976.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Aivars Gipslis"]
[ECO "E60"]
[WhiteElo "?"]
[BlackElo "2535"]
[PlyCount "139"]

1. d4 Nf6 2. c4 g6 3. g3 c6 4. Bg2 d5 5. cxd5 cxd5 6. Nf3 Bg7
7. Nc3 O-O 8. Ne5 Nc6 9. O-O e6 10. Nxc6 bxc6 11. Bf4 Nd7
12. Na4 Ba6 13. Rc1 Qa5 14. b3 Rfc8 15. Bd6 Bb5 16. Nc3 Qb6
17. Bc5 Nxc5 18. dxc5 Qxc5 19. Nxd5 Qa3 20. Nc3 Bxc3 21. Rxc3
Qxa2 22. Qc2 Qxc2 23. Rxc2 Rc7 24. Rfc1 Rd8 25. e3 Rd3
26. Bxc6 Rxb3 27. Bxb5 Rxc2 28. Rxc2 Rxb5 29. Rc7 Ra5 30. g4
h5 31. gxh5 gxh5 32. Kg2 Kg7 33. Kg3 Kg6 34. h4 Ra3 35. f3
Rxe3 36. Rxa7 e5 37. Ra6+ f6 38. Kf2 Rb3 39. Kg2 Rb2+ 40. Kg3
Rb4 41. Re6 Kf5 42. Ra6 Rb8 43. Rc6 Re8 44. Ra6 Re6 45. Ra8
Rc6 46. Rh8 Kg6 47. Rg8+ Kh7 48. Re8 Kg7 49. Re7+ Kg6 50. Re8
Rc3 51. Kf2 Kf5 52. Rf8 Ra3 53. Kg2 Ra6 54. Kg3 Ra7 55. Kg2
Rb7 56. Kg3 Re7 57. Kg2 e4 58. fxe4+ Rxe4 59. Kg3 Re3+ 60. Kg2
Ra3 61. Rb8 Re3 62. Rf8 Rd3 63. Rf7 Ke5 64. Rh7 Kf4 65. Rxh5
Rd2+ 66. Kh3 Rd3+ 67. Kg2 Kg4 68. Ra5 Rd2+ 69. Kf1 Kxh4
70. Ra3 1/2-1/2

[Event "Amsterdam IBM I"]
[Site "Amsterdam IBM I"]
[Date "1976.??.??"]
[EventDate "?"]
[Round "8"]
[Result "0-1"]
[White "Gert Ligterink"]
[Black "Jan Hein Donner"]
[ECO "C07"]
[WhiteElo "2470"]
[BlackElo "?"]
[PlyCount "52"]

1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nc6 5. Bb5 cxd4 6. Nxd4
Bd7 7. Nxc6 Bxc6 8. Bxc6+ bxc6 9. c4 Bc5 10. cxd5 cxd5
11. exd5 exd5 12. O-O Ne7 13. Nb3 Bb6 14. Re1 O-O 15. Bg5 f6
16. Be3 Qd7 17. Bc5 Bxc5 18. Nxc5 Qd6 19. Ne6 Rfe8 20. Qg4 Ng6
21. Nd4 Qb4 22. Rxe8+ Rxe8 23. Qd1 Qxb2 24. Nc6 Qb5 25. Rc1
Nf4 26. Nd4 Qb2 0-1

[Event "Amsterdam IBM I"]
[Site "Amsterdam IBM I"]
[Date "1976.??.??"]
[EventDate "?"]
[Round "9"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Hans Bohm"]
[ECO "E44"]
[WhiteElo "?"]
[BlackElo "2445"]
[PlyCount "89"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Nge2 Ne4 6. Qc2 Bb7
7. a3 Bxc3+ 8. Nxc3 f5 9. b3 d6 10. Ne2 Nd7 11. f3 Nef6
12. Nf4 Qe7 13. d5 exd5 14. Qxf5 Nc5 15. Rb1 O-O 16. Qc2 Ng4
17. Qe2 Rae8 18. Nxd5 Bxd5 19. cxd5 Nxe3 20. Bxe3 Qxe3
21. Qxe3 Rxe3+ 22. Kf2 Rxb3 23. Rxb3 Nxb3 24. Bb5 Nc5 25. h4
a6 26. Bc6 b5 27. Kg3 Rf5 28. f4 Rf8 29. Rd1 h6 30. Kf3 g5
31. hxg5 hxg5 32. g3 gxf4 33. gxf4 Rb8 34. Rb1 Kf7 35. Ke3 Rh8
36. Rf1 Kf6 37. Rf2 Rh1 38. Rf3 Kf5 39. Kd2 Ke4 40. Re3+ Kxf4
41. Re7 Ra1 42. Rxc7 Ke4 43. Rc8 Kd4 44. Ra8 Ra2+ 45. Ke1 0-1

[Event "Amsterdam IBM I"]
[Site "Amsterdam IBM I"]
[Date "1976.??.??"]
[EventDate "?"]
[Round "11"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Hans Ree"]
[ECO "E62"]
[WhiteElo "?"]
[BlackElo "2520"]
[PlyCount "162"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 c6
7. O-O Qa5 8. h3 Be6 9. Qd3 Qa6 10. b3 d5 11. Ne5 dxc4
12. Nxc4 Rd8 13. Bb2 Nbd7 14. e3 Bxc4 15. Qxc4 Qxc4 16. bxc4
Nb6 17. c5 Nc4 18. Bc1 e5 19. Rd1 Nd7 20. Bf1 b5 21. Ne4 f5
22. Ng5 Nxc5 23. Bxc4+ bxc4 24. Ba3 Nd3 25. Ne6 exd4 26. exd4
Bxd4 27. Nxd4 Rxd4 28. Bb2 Re4 29. Bc3 Re2 30. Rab1 Rae8
31. Rb7 R8e7 32. Rxe7 Rxe7 33. Kf1 Rb7 34. Ke2 Kf7 35. Ke3 Ke6
36. h4 Kd5 37. f3 Re7+ 38. Kd2 f4 39. gxf4 Nxf4 40. Kc2+ Nd3
41. Kd2 Ke6 42. Rg1 Nf4 43. Rg4 Rd7+ 44. Kc2 Nd5 45. Bd2 Nb6
46. a4 Rd5 47. a5 Nd7 48. Rxc4 c5 49. Be3 Rf5 50. f4 Kd6
51. Bd2 Nf6 52. Kd3 Kc6 53. Rc1 Rd5+ 54. Ke2 Ne4 55. Be3 Nd6
56. Bf2 a6 57. Be1 Rd4 58. Bf2 Rc4 59. Rd1 Nf5 60. Kf3 Rc3+
61. Kg4 Rc2 62. Kf3 Ra2 63. h5 gxh5 64. Rh1 Ra3+ 65. Ke2 h4
66. Bxh4 h6 67. Bf2 Rxa5 68. Kf3 c4 69. Kg4 Kd7 70. Rc1 Nd6
71. Be1 h5+ 72. Kg3 Ra3+ 73. Kh4 Rf3 74. Bc3 Rxf4+ 75. Kxh5
Kc6 76. Kg6 Nb5 77. Be5 Re4 78. Bf6 Kc5 79. Ra1 Re6 80. Kf5
Rc6 81. Rc1 Kb4 0-1

[Event "Amsterdam IBM I"]
[Site "Amsterdam IBM I"]
[Date "1976.??.??"]
[EventDate "?"]
[Round "12"]
[Result "1/2-1/2"]
[White "Ivan Farago"]
[Black "Jan Hein Donner"]
[ECO "A56"]
[WhiteElo "2534"]
[BlackElo "?"]
[PlyCount "84"]

1. d4 Nf6 2. c4 c5 3. d5 g6 4. Nc3 Bg7 5. e4 d6 6. Bf4 O-O
7. Nf3 Re8 8. Be2 e6 9. dxe6 Bxe6 10. Bxd6 Nc6 11. O-O Nd4
12. e5 Nd7 13. Nxd4 cxd4 14. Qxd4 Nxe5 15. Bxe5 Qxd4 16. Bxd4
Bxd4 17. Rac1 Rac8 18. b3 a6 19. Bf3 Rc7 20. Rfd1 Bg7 21. Ne4
b6 22. Rd6 Rb8 23. Rcd1 h6 24. Rd8+ Rxd8 25. Rxd8+ Kh7 26. Rd6
b5 27. c5 a5 28. c6 a4 29. bxa4 bxa4 30. Rd2 a3 31. Nc5 Bc4
32. Rc2 Bb5 33. Nb7 Bd3 34. Rc5 Bd4 35. Rd5 Rxc6 36. h3 Rc4
37. Na5 Rc1+ 38. Kh2 Bb6 39. Rxd3 Bxa5 40. Rxa3 Bc7+ 41. g3
Rc2 42. Ra7 Rxf2+ 1/2-1/2

[Event "Amsterdam IBM I"]
[Site "Amsterdam IBM I"]
[Date "1976.??.??"]
[EventDate "?"]
[Round "13"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Gudmundur Sigurjonsson"]
[ECO "E69"]
[WhiteElo "?"]
[BlackElo "2530"]
[PlyCount "68"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 Nbd7
7. O-O e5 8. e4 c6 9. h3 Qb6 10. d5 Nc5 11. Re1 Bd7 12. Bf1 a5
13. b3 Rfc8 14. Rb1 Qd8 15. Nd2 Rcb8 16. a3 cxd5 17. cxd5 b5
18. b4 axb4 19. axb4 Na4 20. Nxa4 Rxa4 21. Rb3 Qc8 22. Kh2 Bh6
23. Bb2 Nh5 24. Nb1 Qd8 25. Bc1 Bxc1 26. Qxc1 Qb6 27. Qe3 Qxe3
28. Rexe3 Kf8 29. Rec3 Ke7 30. Bd3 f5 31. f3 Rb7 32. Rc2 f4
33. g4 Ng7 34. Nc3 Raa7 1/2-1/2

[Event "Amsterdam IBM I"]
[Site "Amsterdam IBM I"]
[Date "1976.??.??"]
[EventDate "?"]
[Round "14"]
[Result "1-0"]
[White "Kick Langeweg"]
[Black "Jan Hein Donner"]
[ECO "D17"]
[WhiteElo "2455"]
[BlackElo "?"]
[PlyCount "83"]

1. Nf3 Nf6 2. c4 c6 3. Nc3 d5 4. d4 dxc4 5. a4 Bf5 6. Ne5 Nbd7
7. Nxc4 Qc7 8. g3 e5 9. dxe5 Nxe5 10. Bf4 Nfd7 11. Bg2 Rd8
12. Qc1 Be6 13. Nxe5 Nxe5 14. Qe3 f6 15. Qxa7 Bb4 16. O-O O-O
17. Rfc1 Qe7 18. Bxe5 Bc5 19. Qa5 fxe5 20. Ne4 Bd4 21. Rcb1
Ra8 22. Qe1 Bf5 23. e3 Bc5 24. b4 Bd6 25. Rb2 Ra7 26. a5 Rd8
27. b5 cxb5 28. Nxd6 Rxd6 29. Rxb5 Bd3 30. Rc5 e4 31. Qc3 Qf6
32. Qxf6 gxf6 33. Rd1 Rc6 34. Rd5 Rca6 35. Bf1 Bxf1 36. Kxf1
b6 37. R1d4 bxa5 38. Ra4 Kf7 39. g4 Ra8 40. Kg2 Rg8 41. Kg3
Rg5 42. Rd7+ 1-0

[Event "Amsterdam IBM I"]
[Site "Amsterdam IBM I"]
[Date "1976.??.??"]
[EventDate "?"]
[Round "15"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Bojan Kurajica"]
[ECO "A42"]
[WhiteElo "?"]
[BlackElo "2585"]
[PlyCount "107"]

1. d4 g6 2. c4 Bg7 3. Nc3 d6 4. e4 c6 5. Nf3 Nd7 6. Be3 a6
7. Be2 b5 8. a3 Bb7 9. Nd2 e6 10. O-O Ne7 11. b4 O-O 12. Nb3
Rc8 13. Qd2 e5 14. Na5 Ba8 15. d5 cxd5 16. cxd5 f5 17. f3 Nf6
18. a4 Rxc3 19. Qxc3 fxe4 20. fxe4 Nxe4 21. Qc2 Bxd5 22. axb5
axb5 23. Bxb5 Nf5 24. Qd3 Nxe3 25. Qxe3 Bh6 26. Qa7 Bf4
27. Bc6 Bxc6 28. Nxc6 Qh4 29. h3 Qg3 30. Rxf4 exf4 31. Ne7+
Kh8 32. Qd4+ Nf6 33. Rf1 Qe3+ 34. Qxe3 fxe3 35. Re1 Rb8
36. Rxe3 Rxb4 37. Re6 Ne4 38. g4 Kg7 39. Nc8 Rb1+ 40. Kg2 Rb2+
41. Kf1 d5 42. h4 Rh2 43. Re7+ Kf6 44. Rxh7 Nd2+ 45. Ke1 Nf3+
46. Kf1 Ke5 47. h5 Rc2 48. Ne7 g5 49. Rf7 Nh2+ 50. Ke1 Ke6
51. Rg7 Nxg4 52. Rxg5 Ne5 53. Ng6 Nf3+ 54. Kd1 1/2-1/2

[Event "Amsterdam IBM"]
[Site "Amsterdam IBM"]
[Date "1977.??.??"]
[EventDate "?"]
[Round "7"]
[Result "1/2-1/2"]
[White "Andras Adorjan"]
[Black "Jan Hein Donner"]
[ECO "C09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "32"]

1.e4 e6 2.d4 d5 3.Nd2 c5 4.Ngf3 Nc6 5.exd5 exd5 6.Bb5 Bd6
7.dxc5 Bxc5 8.Nb3 Bb6 9.Qe2+ Ne7 10.Be3 O-O 11.Bxb6 Qxb6
12.Bxc6 Nxc6 13.O-O Bg4 14.h3 Rfe8 15.Qd1 Bxf3 16.Qxf3 d4
1/2-1/2

[Event "Leeuwarden"]
[Site "Leeuwarden"]
[Date "1977.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Viktor Korchnoi"]
[Black "Jan Hein Donner"]
[ECO "D57"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "101"]

1. d4 Nf6 2. c4 e6 3. Nc3 d5 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6
7. Bh4 Ne4 8. Bxe7 Qxe7 9. cxd5 Nxc3 10. bxc3 exd5 11. Qb3 Qd6
12. a4 Nc6 13. a5 b6 14. axb6 cxb6 15. Be2 Na5 16. Qb4 Qg6
17. g3 Qe4 18. O-O Bh3 19. Rfc1 Rac8 20. Ne1 Rc7 21. Bd3 Qe8
22. Ng2 g5 23. Re1 Qe7 24. Qb2 Rfc8 25. Rac1 Qe6 26. e4 dxe4
27. Bxe4 Qb3 28. Qe2 Rxc3 29. Rcd1 Qe6 30. d5 Qd6 31. Qh5 Bxg2
32. Kxg2 Rd8 33. Bb1 Qf6 34. Re4 Rc4 35. Re3 Nb7 36. Qe2 Rc7
37. Re8+ Rxe8 38. Qxe8+ Kg7 39. Qb8 Rd7 40. Qxa7 Qb2 41. Bf5
Re7 42. d6 Re2 43. Qxb7 Rxf2+ 44. Kg1 Rxf5 45. Qg2 Qf6 46. d7
Qd8 47. Qe4 Ra5 48. Qe8 Ra8 49. Re1 b5 50. Kh1 Qa5 51. Rf1 1-0

[Event "Amsterdam IBM"]
[Site "Amsterdam IBM"]
[Date "1977.??.??"]
[EventDate "?"]
[Round "8"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Anthony Miles"]
[ECO "A57"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "153"]

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.e3 g6 6.Nc3 d6 7.a4 Bg7
8.Qb3 Nbd7 9.Nf3 O-O 10.Ra3 axb5 11.Bxb5 Ne8 12.O-O Nc7 13.Bc6
Rb8 14.Nb5 Nb6 15.e4 Ba6 16.Qc2 Bb7 17.Bxb7 Rxb7 18.Nxc7 Qxc7
19.Bd2 Rfb8 20.a5 Nd7 21.Bc3 Bxc3 22.bxc3 Rb2 23.Qa4 Qa7 24.h3
Kg7 25.Rfa1 Nf6 26.Qc4 Nd7 27.Qd3 R8b5 28.Ra4 f6 29.g4 Ne5
30.Nxe5 fxe5 31.a6 Rb8 32.R4a2 R2b6 33.Kg2 Ra8 34.Kg3 Rab8
35.h4 Rb3 36.Qe3 Ra8 37.h5 c4 38.Qxa7 Rxa7 39.Ra3 g5 40.Kf3
Kf7 41.Ke3 Ke8 42.R1a2 Kd7 43.Kd2 Rb6 44.Ra4 Ke8 45.Kc1 Kd7
46.Kc2 h6 47.Kd2 Ke8 48.Kc1 Kd7 49.Kc2 Kd8 50.Rxc4 Raxa6
51.Rxa6 Rxa6 52.Kb3 Ra1 53.Ra4 Rb1+ 54.Kc2 Rb8 55.c4 Rc8
56.Kc3 Kd7 57.Ra5 Kc7 58.c5 Kb7 59.c6+ Kb6 60.Ra2 Rf8 61.Rb2+
Ka6 62.Kd3 Rf3+ 63.Ke2 Rf8 64.Rb7 Re8 65.Rd7 Kb6 66.f3 Kc5
67.c7 Rc8 68.Rxe7 Kb6 69.Rd7 Rxc7 70.Rxd6+ Kc5 71.Rxh6 Kd4
72.Rc6 Ra7 73.Rc2 Ra1 74.d6 Rh1 75.Rd2+ Kc3 76.Rd3+ Kc2 77.d7
1-0

[Event "Amsterdam IBM"]
[Site "Amsterdam IBM"]
[Date "1977.??.??"]
[EventDate "?"]
[Round "3"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Gennady Sosonko"]
[ECO "E41"]
[WhiteElo "2470"]
[BlackElo "2530"]
[PlyCount "46"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 Bxc3+
7. bxc3 d6 8. e4 e5 9. d5 Ne7 10. Nh4 h6 11. g3 Bh3 12. f4 Ng6
13. Qf3 Bg4 14. Qf2 exf4 15. Nxg6 fxg6 16. gxf4 O-O 17. Qg3
Qa5 18. Bd2 Rae8 19. O-O Rxe4 20. Bxe4 Nxe4 21. Qxg4 Nxd2
22. Rfc1 Nxc4 23. Rc2 Qd8 1/2-1/2

[Event "13, Leeuwarden NED ch"]
[Site "13, Leeuwarden NED ch"]
[Date "1977.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Timman"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "72"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nc6 7.O-O
Bg4 8.e5 dxe5 9.dxe5 Nd5 10.h3 Nxc3 11.bxc3 Bxf3 12.Qxf3 Na5
13.Rd1 Qc8 14.c4 c5 15.Bb2 f6 16.f5 fxe5 17.Qd5+ e6 18.Qxe6+
Qxe6 19.fxe6 Rfe8 20.Be4 Nxc4 21.Bc1 Rab8 22.Rb1 Nb6 23.Rd3
Rxe6 24.Ra3 Rd6 25.Be3 Nc4 26.Bxc5 Nxa3 27.Bxd6 Nxb1 28.Bxb8
Nc3 29.Bxb7 a5 30.Kf2 Kf7 31.Bc7 a4 32.Ba5 e4 33.Ke3 Ke6
34.Bxe4 Nxa2 35.Kd3 a3 36.Kc4 Nb4 0-1

[Event "Amsterdam IBM"]
[Site "Amsterdam IBM"]
[Date "1977.??.??"]
[EventDate "?"]
[Round "13"]
[Result "1-0"]
[White "Jan Timman"]
[Black "Jan Hein Donner"]
[ECO "D54"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "77"]

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Rc1 h6 7.Bh4
Ne4 8.Bxe7 Qxe7 9.cxd5 Nxc3 10.Rxc3 exd5 11.Bd3 c6 12.Bb1 Re8
13.Ne2 Nd7 14.O-O Nf8 15.f3 Be6 16.Nf4 Qd6 17.a3 Re7 18.Qd2
Rd8 19.b4 a6 20.Bc2 Bc8 21.Rb1 Rde8 22.a4 Bd7 23.Rbb3 g5
24.Nh5 f5 25.Rb1 Nh7 26.Rf1 Nf6 27.Nxf6+ Qxf6 28.e4 dxe4
29.fxe4 f4 30.e5 Qg7 31.Be4 Be6 32.b5 axb5 33.axb5 Rd8 34.bxc6
bxc6 35.Qf2 Red7 36.Rxc6 Qf7 37.Rd1 Bd5 38.Rg6+ Kf8 39.Bc2 1-0

[Event "BBC TV Master Game"]
[Site "BBC TV Master Game"]
[Date "1977.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Bent Larsen"]
[ECO "A41"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "94"]

1.d4 d6 2.c4 e5 3.Nf3 e4 4.Ng5 f5 5.Nc3 Be7 6.h4 Nf6 7.e3 c5
8.b3 Na6 9.Bb2 O-O 10.Qd2 Nc7 11.O-O-O b6 12.Be2 Qe8 13.Nh3
Be6 14.Nf4 Bf7 15.h5 h6 16.Rdg1 cxd4 17.Qxd4 d5 18.Ncxd5 Ncxd5
19.Nxd5 Bxd5 20.cxd5 Bc5 21.Qd2 Rd8 22.a4 f4 23.Kb1 Kh8 24.Bc4
a6 25.Bxa6 Nxd5 26.Qe2 fxe3 27.fxe3 Qe7 28.Rd1 Nxe3 29.Rxd8
Rxd8 30.Re1 Nf5 31.Qg4 Nd6 32.Bd3 Qd7 33.Qxd7 Rxd7 34.Bc2 Re7
35.Re2 e3 36.Bc3 Ne4 37.Bxe4 Rxe4 38.Kc2 Rh4 39.Kd3 Kg8 40.Be1
Rxh5 41.b4 Bd6 42.Rxe3 Kf7 43.Re4 Rg5 44.g4 h5 45.gxh5 Rxh5
46.Bf2 Bc7 47.Rc4 Bd8 1/2-1/2

[Event "BBC TV Master Game"]
[Site "BBC TV Master Game"]
[Date "1977.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Bent Larsen"]
[Black "Jan Hein Donner"]
[ECO "B08"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "79"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Be2 O-O 6.O-O Bg4 7.Be3
Nc6 8.Qd2 e5 9.d5 Ne7 10.Rad1 Bd7 11.Ne1 Nc8 12.Kh1 Nb6 13.Bg5
Na4 14.Nxa4 Bxa4 15.Qb4 Bd7 16.Qxb7 Qb8 17.Qxb8 Raxb8 18.Bxf6
Bxf6 19.b3 Be7 20.Nd3 f5 21.Bf3 a5 22.Rfe1 a4 23.Kg1 Bg5
24.Re2 Rb6 25.b4 a3 26.c4 Ra6 27.Rb1 Ra4 28.Rb3 Rb8 29.Rc2 h5
30.g3 h4 31.Bg2 Rf8 32.gxh4 Bxh4 33.Rcc3 fxe4 34.Bxe4 Bf5
35.f3 Bxe4 36.fxe4 Rf3 37.c5 dxc5 38.Rxc5 Re3 39.Ra5 Rxa5
40.bxa5 1-0

[Event "Nijmegen rapid"]
[Site "Nijmegen"]
[Date "1977.??.??"]
[EventDate "?"]
[Round "4"]
[Result "1-0"]
[White "F Kuijpers"]
[Black "Jan Hein Donner"]
[ECO "C14"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "63"]

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.f4
O-O 8.Nf3 c5 9.dxc5 Nc6 10.Qd2 Qxc5 11.O-O-O Nb6 12.Nd4 Bd7
13.Nb3 Qe7 14.Be2 Rfd8 15.Qe3 Nc4 16.Bxc4 dxc4 17.Nc5 Be8
18.N5e4 Nb4 19.Nd6 Bc6 20.Nxc4 Bxg2 21.Rhg1 Bc6 22.Nd6 g6
23.a3 Nd5 24.Nxd5 Bxd5 25.f5 Rxd6 26.f6 Qf8 27.exd6 Qxd6
28.Rg3 b5 29.Rh3 Qf8 30.Rd4 Qd8 31.Qg5 Rc8 32.Rxh7 1-0

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1977.??.??"]
[EventDate "?"]
[Round "15"]
[Result "1/2-1/2"]
[White "Samuel Reshevsky"]
[Black "Jan Hein Donner"]
[ECO "D37"]
[WhiteElo "?"]
[BlackElo "2500"]
[PlyCount "113"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.cxd5 exd5 6.Bg5 c6
7.Bxf6 Bxf6 8.b4 Bg4 9.e3 Bxf3 10.gxf3 Nd7 11.Be2 Be7 12.Qb3
Bd6 13.e4 dxe4 14.fxe4 Qb6 15.Rd1 Qxb4 16.Qc2 Nb6 17.Kf1 Rd8
18.Rg1 Bxh2 19.Rg2 Bc7 20.a3 Qe7 21.e5 O-O 22.Ne4 Bxe5 23.dxe5
Rxd1+ 24.Bxd1 Qxe5 25.Qc3 Qxc3 26.Nxc3 Rd8 27.Rg3 Nc4 28.a4
Kf8 29.Be2 Rd4 30.Bd3 Ne5 31.Bc2 h5 32.Ke2 g6 33.Ne4 b6 34.Ng5
Rg4 35.Rxg4 Nxg4 36.Be4 c5 37.Bd5 f6 38.Ne4 Ke7 39.f4 Nh6
40.Nc3 Nf5 41.Ba2 Nd4+ 42.Kf2 Kf8 43.Ne4 Ke7 44.Nc3 f5 45.Nd5+
Kd6 46.Nc3 Ke7 47.Nd5+ Kf8 48.Nc7 Kg7 49.Ne8+ Kh6 50.Nd6 h4
51.Bc4 Nc2 52.Nc8 Na3 53.Bf1 c4 54.Nxa7 g5 55.fxg5+ Kxg5
56.Nc8 c3 57.Bd3 1/2-1/2

[Event "ENG"]
[Site "ENG"]
[Date "1978.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Anthony Miles"]
[ECO "A10"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "94"]

1.c4 b6 2.e4 Bb7 3.Nc3 e6 4.d4 Bb4 5.f3 Qh4+ 6.g3 Bxc3+ 7.bxc3
Qh5 8.Nh3 f5 9.Nf4 Qf7 10.exf5 Qxf5 11.Bd3 Qf7 12.Be4 Nc6
13.d5 exd5 14.Nxd5 O-O-O 15.Be3 Nf6 16.Nxf6 Qxf6 17.Bd4 Nxd4
18.Qxd4 Bxe4 19.Qxf6 gxf6 20.fxe4 Rde8 21.O-O Rxe4 22.Rxf6
Rxc4 23.Rf3 h5 24.h4 Re8 25.Raf1 Kb7 26.R1f2 Re5 27.Kg2 Rec5
28.Rd2 d6 29.Rd4 Rxd4 30.cxd4 Rd5 31.Rf4 c5 32.dxc5 bxc5 33.g4
hxg4 34.Kg3 Rd1 35.h5 Rh1 36.Kxg4 d5 37.Rf5 Kc6 38.Kg3 c4
39.Kg2 Re1 40.h6 Re8 41.h7 c3 42.Rh5 Rh8 43.Rh1 c2 44.Rc1 Rxh7
45.Rxc2+ Kb5 46.Rc3 Rf7 47.Kg3 d4 0-1

[Event "Buenos Aires olm"]
[Site "Buenos Aires olm"]
[Date "1978.??.??"]
[EventDate "?"]
[Round "14"]
[Result "1-0"]
[White "Oleg Romanishin"]
[Black "Jan Hein Donner"]
[ECO "B07"]
[WhiteElo "2610"]
[BlackElo "2490"]
[PlyCount "51"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bg5 Bg7 5. f3 c6 6. Qd2 h6
7. Be3 b5 8. Bd3 Nbd7 9. Nge2 Nb6 10. b3 a5 11. a4 b4 12. Nd1
Nfd7 13. c3 e5 14. cxb4 axb4 15. Rc1 Bb7 16. O-O exd4 17. Nxd4
c5 18. Nb5 Nc8 19. Be2 Ra6 20. Nb2 h5 21. Nc4 Ne5 22. Rfd1
Nxc4 23. Bxc4 Qe7 24. Bg5 Qd7 25. e5 Bxe5 26. Re1 1-0

[Event "Ch Netherlands"]
[Site "Leeuwarden (Netherlands)"]
[Date "1978.??.??"]
[EventDate "?"]
[Round "6"]
[Result "1/2-1/2"]
[White "Robert G Hartoch"]
[Black "Jan Hein Donner"]
[ECO "C45"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "77"]

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.d4 exd4 5.e5 d5 6.Bb5 Nd7 7.O-O
Be7 8.Re1 O-O 9.Bxc6 bxc6 10.Nxd4 Nb8 11.Nd2 c5 12.N4f3 Nc6
13.Nf1 Be6 14.Bf4 Qd7 15.Ng5 Bg4 16.f3 Bf5 17.Ne3 Rad8 18.g4
Bg6 19.Ng2 Nd4 20.Rc1 f6 21.exf6 Bxf6 22.Nh3 Rde8 23.c3 Rxe1+
24.Nxe1 Ne6 25.Ng2 d4 26.Bg3 Qc6 27.Ngf4 Bf7 28.Nd3 dxc3
29.bxc3 Rd8 30.Qe2 Qa6 31.Nhf2 Bg6 32.Re1 Bxd3 33.Qxe6+ Qxe6
34.Rxe6 Bxc3 35.Bxc7 Rd7 36.Rc6 Bd4 37.Bd6 Bb5 38.Rc8+ Kf7
39.Bxc5 1/2-1/2

[Event "Buenos Aires"]
[Site "OL"]
[Date "1978.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Liu Wenzhe"]
[Black "Jan Hein Donner"]
[ECO "B07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "39"]

1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Be2 Bg7 5. g4 h6 6. h3 c5
7. d5 O-O 8. h4 e6 9. g5 hxg5 10. hxg5 Ne8 11. Qd3 exd5
12. Nxd5 Nc6 13. Qg3 Be6 14. Qh4 f5 15. Qh7+ Kf7 16. Qxg6+
Kxg6 17. Bh5+ Kh7 18. Bf7+ Bh6 19. g6+ Kg7 20. Bxh6+ 1-0

[Event "Buenos Aires ol (Men)"]
[Site "Buenos Aires"]
[Date "1978.10.25"]
[EventDate "?"]
[Round "13"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Dragoljub Velimirovic"]
[ECO "A56"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "33"]

1.d4 Nf6 2.c4 c5 3.d5 g6 4.Nc3 Bg7 5.g3 O-O 6.Bg2 d6 7.Nf3 a6
8.a4 e6 9.O-O exd5 10.cxd5 Nbd7 11.Nd2 Ne8 12.a5 b5 13.axb6
Nxb6 14.Nb3 Nc4 15.Ra4 Nb6 16.Ra2 Nc4 17.Ra4 1/2-1/2

[Event "23rd olm final"]
[Site "Buenos Aires ARG"]
[Date "1978.10.27"]
[EventDate "1978.10.25"]
[Round "3"]
[Result "1-0"]
[White "Gyula Sax"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "2550"]
[BlackElo "2490"]
[PlyCount "47"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nc6 7.O-O
e5 8.dxe5 dxe5 9.f5 Nb4 10.fxg6 hxg6 11.Bg5 c6 12.Kh1 Nxd3
13.cxd3 Qd6 14.d4 Nh7 15. d5 Nxg5 16.Nxg5 Qe7 17.Nf3 Bd7
18.Qb3 b6 19.Rad1 Rfd8 20.Rd2 c5 21.d6 Qe6 22.Nd5 Qxd6 23.Ng5
Be6 24.Qg3 1-0

[Event "Buenos Aires ol (Men)"]
[Site "Buenos Aires"]
[Date "1978.10.26"]
[EventDate "1978.10.25"]
[Round "2"]
[Result "0-1"]
[White "Harri M Hurme"]
[Black "Jan Hein Donner"]
[ECO "D50"]
[WhiteElo "2310"]
[BlackElo "2490"]
[PlyCount "80"]

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.Bg5 Be7 5.e3 h6 6.Bxf6 Bxf6 7.cxd5
exd5 8.g3 O-O 9.Bg2 c6 10.Nge2 Nd7 11.O-O Be7 12.Nf4 Nf6
13.Nd3 Bf5 14.a3 Re8 15.b4 a5 16.Na2 axb4 17.Naxb4 Ne4 18.Qc1
Bxb4 19.Nxb4 Ra4 20.Bf3 Qd7 21.Qb2 Nd6 22.Qb3 Rea8 23.Be2 Nc4
24.Bxc4 dxc4 25.Qxc4 Bh3 26.Rfe1 Qg4 27.f3 Qxf3 28. Qe2 Qxe2
29.Rxe2 Rxa3 30.Rb1 Ra1 31.Ree1 Rxb1 32.Rxb1 Bf5 33.Rb2 Ra1+
34. Kf2 Be4 35.g4 g5 36.h3 Rh1 37.Kg3 Rg1+ 38.Kh2 Re1 39.Rb3
f5 40.gxf5 h5 0-1

[Event "Buenos Aires ol (Men)"]
[Site "Buenos Aires"]
[Date "1978.10.30"]
[EventDate "1978.10.25"]
[Round "5"]
[Result "1/2-1/2"]
[White "A Rodriguez"]
[Black "Jan Hein Donner"]
[ECO "B07"]
[WhiteElo "2495"]
[BlackElo "2490"]
[PlyCount "45"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Bg5 Bg7 5.Qd2 h6 6.Bh4 g5 7.Bg3
Nh5 8.O-O-O Nc6 9.Bb5 Bd7 10.Nge2 a6 11.Bxc6 bxc6 12.h4 e5
13.Bh2 gxh4 14.Kb1 Qg5 15. Qd3 Be6 16.Rdf1 Bf6 17.f4 exf4
18.Nxf4 Nxf4 19.Bxf4 Qg6 20.Qe3 Kd7 21.e5 Be7 22.Rf2 h5 23.Re1
1/2-1/2

[Event "Buenos Aires ol (Men)"]
[Site "Buenos Aires"]
[Date "1978.11.01"]
[EventDate "1978.10.25"]
[Round "7"]
[Result "1-0"]
[White "Konstanty Kaiszauri"]
[Black "Jan Hein Donner"]
[ECO "B08"]
[WhiteElo "2410"]
[BlackElo "2490"]
[PlyCount "53"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Be2 O-O 6.O-O Bg4 7.Be3
Nc6 8.Qd2 e5 9.d5 Ne7 10.Rad1 Nc8 11.Ne1 Bd7 12.f3 c6 13.dxc6
bxc6 14.Bc4 Be6 15.Bb3 Qc7 16.Kh1 Nd7 17.Bh6 Ndb6 18.Bxg7 Kxg7
19.f4 exf4 20.Qxf4 Qe7 21.Nf3 Nd7 22.Nd4 c5 23.Nd5 Bxd5
24.Bxd5 cxd4 25.Bxa8 Qe5 26.Qf2 Ncb6 27.Bc6 1-0

[Event "Buenos Aires ol (Men)"]
[Site "Buenos Aires"]
[Date "1978.11.06"]
[EventDate "1978.10.25"]
[Round "11"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Miguel Ignacio Bernat"]
[ECO "A55"]
[WhiteElo "2490"]
[BlackElo "2405"]
[PlyCount "73"]

1.d4 Nf6 2.c4 d6 3.Nc3 Nbd7 4.e4 e5 5.Nf3 c6 6.Be2 Be7 7.O-O
O-O 8.Re1 Re8 9.Bf1 a6 10.a3 Bf8 11.h3 b5 12.d5 cxd5 13.cxd5
Nb6 14.Be3 Bd7 15.Nd2 Rc8 16.Qf3 Be7 17.Rec1 Rf8 18.Na2 Na4
19.b3 Rxc1 20.Rxc1 Nc5 21.Nc3 Qb8 22.b4 Nb7 23.Qd1 Rc8 24.a4
Nd8 25.axb5 axb5 26.Ndb1 Ne8 27.Na3 Nc7 28.Ncxb5 Nxb5 29.Rxc8
Qxc8 30.Nxb5 Qb7 31.Qd3 g6 32.Qc4 f5 33.f3 Nf7 34.Qc7 Bc8
35.Qxb7 Bxb7 36.Na7 Bh4 37.Bb5 1-0

[Event "It (cat.12), Amsterdam (Netherlands)"]
[Site "It (cat.12), Amsterdam (Netherlands)"]
[Date "1979.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Ulf Andersson"]
[Black "Jan Hein Donner"]
[ECO "D13"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "77"]

1.c4 c6 2.Nc3 d5 3.cxd5 cxd5 4.d4 Nc6 5.Nf3 Nf6 6.Bf4 e6 7.e3
Bd6 8.Bd3 Bxf4 9.exf4 Qb6 10.a3 Bd7 11.Na4 Qc7 12.g3 O-O
13.O-O Rfc8 14.Rc1 Qd8 15.Nc5 Rc7 16.Rc3 Rac8 17.Qc2 g6 18.Rc1
Be8 19.Qd2 Qe7 20.b4 Nb8 21.Ne5 b6 22.Nb3 Ba4 23.Rxc7 Rxc7
24.Rxc7 Qxc7 25.Nc1 Ne4 26.Bxe4 dxe4 27.Ne2 f6 28.Ng4 Qd8
29.Nc3 Bc6 30.d5 exd5 31.Qd4 Kg7 32.h4 Nd7 33.Nxd5 Bxd5
34.Qxd5 Qe7 35.h5 gxh5 36.Ne3 Qe8 37.Nf5+ Kg6 38.Nd6 Qe7
39.Qg8+ 1-0

[Event "Amsterdam (Netherlands)"]
[Site "Amsterdam (Netherlands)"]
[Date "1979.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Eugenio Torre"]
[Black "Jan Hein Donner"]
[ECO "D19"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "34"]

1.Nf3 d5 2.d4 Nf6 3.c4 c6 4.Nc3 dxc4 5.a4 Bf5 6.e3 e6 7.Bxc4
Bb4 8.O-O Nbd7 9.h3 Bg6 10.Be2 a5 11.Nh4 O-O 12.Nxg6 hxg6
13.Qc2 Qe7 14.Rd1 e5 15.b3 e4 16.Bd2 Nb6 17.Bc4 Rfe8 1/2-1/2

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1979.??.??"]
[EventDate "?"]
[Round "7"]
[Result "1/2-1/2"]
[White "Vlastimil Hort"]
[Black "Jan Hein Donner"]
[ECO "C65"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "94"]

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 d6 5.c4 Be7 6.h3 O-O 7.O-O
Nd7 8.Nc3 Nc5 9.Be3 Ne6 10.Nd5 Ncd4 11.Nxd4 exd4 12.Bd2 c6
13.Nxe7+ Qxe7 14.Ba4 Nc5 15.Bc2 Be6 16.Re1 Nd7 17.f4 f6 18.Qf3
a5 19.Qf2 c5 20.Ba4 Nb6 21.Bd1 Ra7 22.Bf3 Nd7 23.a4 b6 24.h4
Rc7 25.h5 Kh8 26.Qh4 Rg8 27.Re2 h6 28.Rf1 Re8 29.Be1 Nf8
30.Bg3 Nd7 31.Rfe1 Bf7 32.Qh2 Qf8 33.Bg4 Re7 34.b3 Rb7 35.Qh4
Bg8 36.Bf5 Bh7 37.Qg4 Bxf5 38.Qxf5 Qf7 39.Qd5 Nf8 40.Qxf7 Rxf7
41.e5 fxe5 42.fxe5 dxe5 43.Rxe5 Nd7 44.Re6 Nf6 45.R1e5 Ng4
46.Re4 Nf6 47.R4e5 Ng4 1/2-1/2

[Event "Amsterdam IBM"]
[Site "Amsterdam IBM"]
[Date "1979.??.??"]
[EventDate "?"]
[Round "3"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Gennady Sosonko"]
[ECO "E41"]
[WhiteElo "2465"]
[BlackElo "2535"]
[PlyCount "34"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 Bxc3+
7. bxc3 d6 8. e4 e5 9. d5 Ne7 10. Nd2 Qa5 11. Qb3 O-O 12. f3
Nh5 13. g3 Bh3 14. Nf1 f5 15. exf5 Bxf5 16. Bxf5 Nxf5 17. Nd2
Nf6 1/2-1/2

[Event "Leeuwarden NED ch"]
[Site "Leeuwarden NED ch"]
[Date "1979.??.??"]
[EventDate "?"]
[Round "7"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Gennady Sosonko"]
[ECO "E59"]
[WhiteElo "2465"]
[BlackElo "2535"]
[PlyCount "35"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Bd3 Nc6 6. Nf3 d5
7. O-O O-O 8. a3 Bxc3 9. bxc3 dxc4 10. Bxc4 Qc7 11. Bd3 e5
12. Qc2 Re8 13. dxe5 Nxe5 14. Nxe5 Qxe5 15. f3 Bd7 16. a4 Rad8
17. Re1 Bc6 18. e4 1/2-1/2

[Event "8, Leeuwarden NED ch"]
[Site "8, Leeuwarden NED ch"]
[Date "1979.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Timman"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "64"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nc6 7.e5
dxe5 8.fxe5 Ng4 9.Be4 f6 10.h3 Nh6 11.exf6 exf6 12.Bf4 Ne7
13.Qd2 Nhf5 14.O-O-O Nd6 15.d5 Nxe4 16.Nxe4 c6 17.d6 Nd5
18.Bh6 Bxh6 19.Qxh6 Bf5 20.Ng3 Bxc2 21.Kxc2 Qxd6 22.Ne4 Qe6
23.Rhe1 Nb4+ 24.Kc1 Qxa2 25.Nc3 Qa1+ 26.Nb1 Qa4 27.Na3 Na2+
28.Kb1 Nc3+ 29.bxc3 Qb3+ 30.Kc1 Qxa3+ 31.Kc2 Qa2+ 32.Kc1 Qa3+
1/2-1/2

[Event "Leeuwarden NED ch"]
[Site "Leeuwarden NED ch"]
[Date "1979.??.??"]
[EventDate "?"]
[Round "3"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "John Van der Wiel"]
[ECO "E60"]
[WhiteElo "2465"]
[BlackElo "?"]
[PlyCount "78"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nf3 d6 6. O-O Nc6
7. d5 Na5 8. Nfd2 c5 9. Na3 e5 10. e4 a6 11. b3 Ng4 12. Nc2 f5
13. f3 Nf6 14. Ne1 b5 15. Nd3 fxe4 16. fxe4 Ng4 17. Qe2 Bh6
18. Nf3 Bxc1 19. Raxc1 Ra7 20. h3 bxc4 21. bxc4 Nf6 22. Qe3
Re7 23. Nd2 Rb7 24. Rc3 Rb6 25. Kh2 Qc7 26. g4 Qe7 27. g5 Nh5
28. Rxf8+ Kxf8 29. Bf3 Ng7 30. Rc1 Nb7 31. Rf1 Kg8 32. Bd1 Bd7
33. Bg4 Bxg4 34. hxg4 Nd8 35. Nf3 Nf7 36. Qd2 Rb8 37. Kg3 Ne8
38. Rh1 Rb7 39. Rd1 Qd8 1/2-1/2

[Event "NED-ch"]
[Site "Leeuwarden"]
[Date "1979.??.??"]
[EventDate "?"]
[Round "12"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Gert Ligterink"]
[ECO "E96"]
[WhiteElo "2500"]
[BlackElo "2405"]
[PlyCount "70"]

1.d4 g6 2.c4 Bg7 3.Nc3 d6 4.e4 Nf6 5.Be2 O-O 6.Nf3 e5 7.O-O
Nbd7 8.Re1 c6 9.Bf1 a5 10.Rb1 exd4 11.Nxd4 Re8 12.Bf4 Ne5
13.h3 Nfd7 14.Qd2 Nc5 15.Red1 Qe7 16.Be3 Ned7 17.Re1 Nf6 18.f3
Qc7 19.Bf2 b6 20.Red1 Bb7 21.Qc2 Rad8 22.a3 d5 23.cxd5 cxd5
24.Ndb5 Qf4 25.Ne2 Qe5 26.Bd4 Qe7 27.e5 Nfd7 28.Nd6 Nxe5
29.Nxe8 Rxe8 30.Nc3 Ne6 31.Bxe5 Bxe5 32.Nxd5 Qg5 33.Qf2 Bxd5
34.Rxd5 Nf4 35.Rxe5 Nxh3+ 0-1

[Event "IBM"]
[Site "Amsterdam"]
[Date "1979.??.??"]
[EventDate "?"]
[Round "10"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Gert Ligterink"]
[ECO "A40"]
[WhiteElo "2500"]
[BlackElo "2405"]
[PlyCount "78"]

1.d4 g6 2.c4 Bg7 3.Nf3 Nf6 4.g3 O-O 5.Bg2 d6 6.O-O Nc6 7.d5
Na5 8.Nfd2 c5 9.Nc3 a6 10.Qc2 Rb8 11.b3 b5 12.Bb2 Bh6 13.cxb5
axb5 14.e4 b4 15.Nd1 Qb6 16.Re1 Ba6 17.h3 Rbc8 18.Ne3 Bxe3
19.Rxe3 c4 20.bxc4 Nxc4 21.Nxc4 Rxc4 22.Qd2 Rfc8 23.a3 bxa3
24.Bxf6 exf6 25.Rexa3 Bb7 26.g4 Rc2 27.Qf4 Qd4 28.Rf1 Qb4
29.Rf3 R2c7 30.Ra1 Qd4 31.Rb1 Ba6 32.Ra3 Bd3 33.Rd1 Rc3
34.Rxc3 Qxc3 35.Qxd6 Qc2 36.Re1 Qd2 37.Ra1 Qb2 38.Ra7 Qb1+
39.Kh2 Rf8 1-0

[Event "It (cat.13), Amsterdam (Netherlands)"]
[Site "It (cat.13), Amsterdam (Netherlands)"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Anthony Miles"]
[Black "Jan Hein Donner"]
[ECO "E76"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "127"]

1. c4 Nf6 2. Nc3 g6 3. d4 Bg7 4. e4 d6 5. f3 O-O 6. Bg5 c5
7. d5 e6 8. Qd2 exd5 9. Nxd5 Be6 10. Ne2 Bxd5 11. cxd5 Nbd7
12. Nc3 a6 13. Be2 Qc7 14. O-O c4 15. Kh1 b5 16. b4 cxb3
17. axb3 Nb6 18. Rac1 Qb8 19. Na2 Nfd7 20. Nb4 Nc5 21. Nc6 Qb7
22. Na5 Qd7 23. b4 Nca4 24. Rc6 Rfc8 25. Rfc1 Rxc6 26. dxc6
Qc7 27. Nb7 Bf8 28. Bf4 Nc8 29. Bd1 Nab6 30. Bb3 Be7 31. Qb2
Bf8 32. Bg5 Bg7 33. Qa2 Na7 34. Qd2 Bf8 35. Bf4 Nc4 36. Bxc4
bxc4 37. Rxc4 Nb5 38. Rc1 Rc8 39. h3 Qb6 40. Be3 Qc7 41. Qa2
Ra8 42. Qf2 Be7 43. Bb6 Qc8 44. Qa2 Qe6 45. Qxe6 fxe6 46. c7
Rc8 47. Nd8 d5 48. Nc6 Kf7 49. e5 Ke8 50. g3 Bf8 51. f4 d4
52. Nxd4 Nxd4 53. Bxd4 Bxb4 54. Bb6 Kd7 55. Kg2 a5 56. Kf3 a4
57. Rc4 Be7 58. Rxa4 Kc6 59. Ba5 Kb5 60. Ra2 h5 61. Ke4 Bf8
62. Kf3 Be7 63. g4 hxg4+ 64. Kxg4 1-0

[Event "It (cat.13), Amsterdam (Netherlands)"]
[Site "It (cat.13), Amsterdam (Netherlands)"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Lajos Portisch"]
[Black "Jan Hein Donner"]
[ECO "E88"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "73"]

1. c4 Nf6 2. Nc3 g6 3. e4 d6 4. d4 Bg7 5. f3 O-O 6. Be3 e5
7. d5 c6 8. Bd3 cxd5 9. cxd5 Ne8 10. Nge2 Bh6 11. Bf2 Nd7
12. O-O Nc5 13. Bc2 a5 14. a3 Bd7 15. b4 axb4 16. axb4 Rxa1
17. Qxa1 Na6 18. Rb1 Nec7 19. Bb6 Qb8 20. Qa3 Rc8 21. Bd3 Bg5
22. Kh1 Na8 23. Bg1 N8c7 24. Nc1 Ne8 25. N1a2 Nec7 26. Na4 Bb5
27. Nb6 Bxd3 28. Qxd3 Rd8 29. Nc3 Ne8 30. Nc4 Nac7 31. b5 Ng7
32. Ra1 Nce8 33. g3 f5 34. Ra7 Rd7 35. b6 Rf7 36. Na5 Nf6
37. Nxb7 1-0

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1-0"]
[White "Vlastimil Hort"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "77"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Bd3 Nc6 7.e5
dxe5 8.dxe5 Nd7 9.Bd2 Nb6 10.O-O Nb4 11.Be2 Bf5 12.Rc1 Qd7
13.a3 Nc6 14.Be3 Rfd8 15.Qe1 Nd5 16.Nxd5 Qxd5 17.Qc3 e6 18.h3
Qd7 19.Rfd1 Qe8 20.Bf2 Rxd1+ 21.Rxd1 Rd8 22.Rxd8 Qxd8 23.g4
Be4 24.Nd2 Bd5 25.Qd3 Ba2 26.Qxd8+ Nxd8 27.Bxa7 Nc6 28.Be3 g5
29.Nf3 gxf4 30.Bxf4 Bd5 31.Kf2 b6 32.b4 Bxf3 33.Bxf3 Bxe5
34.Kg3 Bxf4+ 35.Kxf4 Nd4 36.Be4 f6 37.a4 h6 38.Ke3 c6 39.c3
1-0

[Event "Svendborg"]
[Site "07"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Vlastimil Jansa"]
[Black "Jan Hein Donner"]
[ECO "B08"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "178"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Be2 O-O 6.O-O Bg4 7.Be3
Nc6 8.Qd2 e5 9.dxe5 dxe5 10.Rad1 Qc8 11.Qc1 Rd8 12.Rxd8+ Qxd8
13.Rd1 Qf8 14.h3 Bxf3 15.Bxf3 a6 16.Nb1 Rd8 17.Rxd8 Qxd8
18.Nd2 Bf8 19.c3 Nd7 20.b4 a5 21.a3 axb4 22.axb4 Nb6 23.Be2
Qa8 24.Qb2 Qa4 25.Nc4 Nxc4 26.Bxc4 Qd1+ 27.Kh2 Qd7 28.Qa2 Kg7
29.Qa4 Qe7 30.Qa8 Nd8 31.Qc8 b6 32.Bd5 Qd6 33.c4 c6 34.c5 bxc5
35.bxc5 Qf6 36.Bb3 Be7 37.Qd7 Ne6 38.Bxe6 Qxe6 39.Qxe6 fxe6
40.Kg1 Kf7 41.Kf1 Bd8 42.Ke2 Ke8 43.Kd3 Kd7 44.Bd2 Kc8 45.Kc4
Kb7 46.Bh6 Kc8 47.Bg7 Bc7 48.Kb4 Kd7 49.Ka4 Kc8 50.g3 Kd7
51.Bf6 Kc8 52.Bg5 Kd7 53.Bd2 Kc8 54.Bc3 Kb7 55.Kb4 Kc8 56.Kc4
Kd7 57.Kd3 Kc8 58.Bd2 Kd7 59.Ke2 Ke8 60.Bc3 Kf7 61.Kf3 Kf6
62.Kg4 Bd8 63.h4 Be7 64.Bb4 h5 65.Kf3 Kf7 66.Ke2 Ke8 67.Kd3
Kd7 68.Kc4 Bd8 69.Bc3 Bc7 70.Kb4 Kc8 71.Bd2 Kd7 72.Ka4 Kc8
73.Bg5 Kd7 74.Bh6 Kc8 75.Bf8 Kd7 76.Kb4 Ke8 77.Bg7 Kd7 78.Bf6
Kc8 79.Bg5 Kb7 80.f3 Kc8 81.Bd2 Kb7 82.Kc4 Ka6 83.Bg5 Kb7
84.Be7 Kc8 85.Bd6 Kd7 86.Bxc7 Kxc7 87.f4 Kb7 88.fxe5 Ka6
89.Kb4 Kb7 1/2-1/2

[Event "03, Amsterdam IBM"]
[Site "03, Amsterdam IBM"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Anatoli Karpov"]
[ECO "E39"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "106"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O 6. Bf4 Na6
7. Bd6 Re8 8. a3 Qa5 9. Rc1 Bxc3+ 10. Qxc3 Qxc3+ 11. Rxc3 Ne4
12. Rc2 Naxc5 13. Bxc5 Nxc5 14. Nf3 b6 15. Nd4 a5 16. Nb5 Rd8
17. Nd6 Bb7 18. Nxb7 Nxb7 19. e3 Rac8 20. Bd3 Nc5 21. Be2 a4
22. f3 Nb3 23. Bd3 Rc5 24. Ke2 Rdc8 25. Rc3 Na5 26. Rhc1 Kf8
27. Kf2 Ke7 28. Ke2 h6 29. Ke1 Rh5 30. h3 Rhc5 31. Kf2 Nb3
32. R1c2 d6 33. Ke1 g5 34. g3 R5c7 35. Bf1 f5 36. Kf2 Rf8
37. Bg2 f4 38. Bf1 Rc5 39. Bd3 fxe3+ 40. Kxe3 Re5+ 41. Be4 Nc5
42. Kd4 Nb3+ 43. Kd3 Kd7 44. Ke3 Nc5 45. Kd4 Rc8 46. Rf2 Nb3+
47. Kd3 Rf8 48. Rfc2 h5 49. Ke3 Nc5 50. Kd4 g4 51. Re3 gxf3
52. Bxf3 Nb3+ 53. Kd3 Rxe3+ 0-1

[Event "Amsterdam"]
[Site "08"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Ljubomir Ljubojevic"]
[ECO "D35"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "58"]

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 c6 6.e3 Bd6 7.Bd3
Nbd7 8.Qc2 Nf8 9.Nf3 Ng6 10.h4 h6 11.Bxg6 hxg5 12.Bf5 g4
13.Ne5 Bxf5 14.Qxf5 Rh5 15.Qd3 Qe7 16.f4 gxf3 17.Nxf3 Ne4
18.Ne2 O-O-O 19.g4 Rh6 20.Rf1 Rxh4 21.Nxh4 Qxh4+ 22.Kd1 Nf2+
23.Rxf2 Qxf2 24.Qf5+ Qxf5 25.gxf5 Rh8 26.Kd2 Kd7 27.Rg1 Rh7
28.Kd3 Ke7 29.e4 Rh3+ 0-1

[Event "Amsterdam IBM"]
[Site "Amsterdam IBM"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "10"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Lev Polugaevsky"]
[ECO "E39"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "51"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O 6. a3 Bxc5
7. Nf3 Nc6 8. Bg5 Nd4 9. Nxd4 Bxd4 10. e3 Qa5 11. exd4 Qxg5
12. g3 d6 13. Qd2 Qa5 14. Bg2 Qc7 15. b3 Bd7 16. O-O Rac8
17. Rfc1 Rfe8 18. Ne4 Nxe4 19. Bxe4 Bc6 20. d5 exd5 21. Bxd5
Bxd5 22. Qxd5 Re5 23. Qd4 a5 24. Re1 h5 25. Rad1 a4 26. bxa4
1/2-1/2

[Event "05, Amsterdam"]
[Site "05, Amsterdam"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Vasily Smyslov"]
[Black "Jan Hein Donner"]
[ECO "E03"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "111"]

1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Qxc4
c5 7. Nf3 a6 8. O-O b5 9. Qb3 Bb7 10. a4 Bd5 11. Qd1 cxd4
12. Nxd4 Bxg2 13. Kxg2 Bc5 14. b4 Bxd4 15. Qxd4 bxa4 16. Rxa4
Qb6 17. Qxb6 Nxb6 18. Ra2 Nfd5 19. Bd2 Nc4 20. b5 O-O 21. bxa6
Nxd2 22. Nxd2 Nb4 23. Ra4 Nxa6 24. Rc1 Rfb8 25. Rcc4 Nc7
26. Rxa8 Nxa8 27. Ne4 Kf8 28. Ra4 Nb6 29. Ra7 Nc8 30. Rd7 Nb6
31. Rc7 Nd5 32. Ra7 Nb6 33. h4 h6 34. g4 Rd8 35. Kg3 Nd5
36. Nc5 Kg8 37. e4 Nf6 38. f3 Rc8 39. Nd3 Rc3 40. Nf2 Kf8
41. e5 Ne8 42. Ne4 Rc7 43. Ra8 Ke7 44. h5 f6 45. f4 fxe5
46. fxe5 Rc1 47. Kf3 Rc7 48. Ra6 Rc1 49. Ra8 Rf1+ 50. Ke2 Rc1
51. Rb8 Rc7 52. Kd3 Rc1 53. Nc3 Rg1 54. Rb7+ Kd8 55. Rb8+ Ke7
56. Rb7+ 1/2-1/2

[Event "1, Amsterdam IBM"]
[Site "1, Amsterdam IBM"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "?"]
[Result "0-1"]
[White "Jan Hein Donner"]
[Black "Jan Timman"]
[ECO "E41"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "54"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 Nc6 6.Nf3 Bxc3+
7.bxc3 d6 8.e4 e5 9.d5 Ne7 10.Nh4 h6 11.f3 Qa5 12.Bd2 g5
13.Nf5 Nxf5 14.exf5 Bd7 15.h4 g4 16.fxg4 e4 17.Be2 e3 18.Bxe3
Qxc3+ 19.Kf2 h5 20.gxh5 Ne4+ 21.Kf3 Bxf5 22.Bd3 Rg8 23.Bxe4
Bg4+ 24.Kf2 Bxd1 25.Raxd1 O-O-O 26.Bf5+ Kc7 27.h6 Qf6 0-1

[Event "Amsterdam"]
[Site "Amsterdam"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Jan Timman"]
[ECO "E41"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "45"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Nf3 Nc6 6.Bd3 Bxc3+
7.bxc3 d6 8.e4 e5 9.d5 Ne7 10.Nh4 h6 11.f3 Qa5 12.Bd2 g5
13.Nf5 Nxf5 14.exf5 Bd7 15.h4 g4 16.fxg4 e4 17.Be2 e3 18.Bxe3
Qxc3+ 19.Kf2 h5 20.gxh5 Ne4+ 21.Kf3 Bxf5 22.Bd3 Rg8 23.g4
1/2-1/2

[Event "Leeuwarden ch-NED"]
[Site "Leeuwarden ch-NED"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "2"]
[Result "1/2-1/2"]
[White "Jan Timman"]
[Black "Jan Hein Donner"]
[ECO "D56"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "63"]

1.c4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bh4
Ne4 8.Bxe7 Qxe7 9.Qc2 Nxc3 10.Qxc3 c6 11.Bd3 dxc4 12.Bxc4 b6
13.O-O Bb7 14.e4 c5 15.d5 exd5 16.exd5 Nd7 17.Rfe1 Qd6 18.Nh4
g6 19.Qe3 Kg7 20.Qe7 Qxe7 21.Rxe7 Rad8 22.Rae1 Bc8 23.f4 Nf6
24.Rxa7 Nxd5 25.f5 gxf5 26.Rd1 Be6 27.Rb7 Kf6 28.Bxd5 Bxd5
29.Rxb6+ Kg5 30.Nf3+ Bxf3 31.Rxd8 Rxd8 32.gxf3 1/2-1/2

[Event "Leeuwarden NED ch"]
[Site "Leeuwarden NED ch"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "13"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "John Van der Wiel"]
[ECO "E25"]
[WhiteElo "2475"]
[BlackElo "2465"]
[PlyCount "58"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 c5 6. f3 d5
7. cxd5 Nxd5 8. dxc5 f5 9. Qc2 Qh4+ 10. g3 Qe7 11. e4 fxe4
12. fxe4 Nf6 13. Be3 Ng4 14. Qe2 Nxe3 15. Qxe3 O-O 16. Nf3 Nd7
17. c6 bxc6 18. Bc4 Rxf3 19. Qxf3 Ne5 20. Qe2 Qc5 21. Ba2
Qxc3+ 22. Kf2 Ba6 23. Bxe6+ Kh8 24. Qxa6 Qf3+ 25. Kg1 Qe3+
26. Kg2 Qxe4+ 27. Kh3 Nf3 28. Bg4 Ng5+ 29. Kh4 Nf3+ 1/2-1/2

[Event "Svendborg (Denmark)"]
[Site "Svendborg (Denmark)"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1-0"]
[White "Gert Iskov"]
[Black "Jan Hein Donner"]
[ECO "C29"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "87"]

1.e4 e5 2.Nc3 Nf6 3.f4 d5 4.fxe5 Nxe4 5.d3 Nxc3 6.bxc3 c5
7.Nf3 d4 8.Be2 Nc6 9.O-O Be7 10.Qe1 g5 11.Qf2 Be6 12.cxd4 g4
13.d5 Qxd5 14.Ng5 Bxg5 15.Bxg5 Rg8 16.c4 Qxe5 17.Bf6 Qd6
18.Qe3 Kd7 19.Rad1 Nd4 20.Be5 Qb6 21.Rb1 Nxe2+ 22.Qxe2 Qc6
23.Bg3 Rae8 24.d4 cxd4 25.Qe5 b6 26.Rbd1 Ke7 27.Qxd4 Rg6
28.Bd6+ Kd7 29.Bf4+ Kc8 30.c5 bxc5 31.Qe5 Kb7 32.Rb1+ Ka6
33.Qc3 Qa4 34.Qxc5 Bc4 35.Rb4 Qc6 36.Rxc4 Qxc5+ 37.Rxc5 Re2
38.Rf2 Re1+ 39.Rf1 Re2 40.a3 Rb6 41.Re5 Rc2 42.Be3 Rbb2
43.Rf6+ Kb7 44.Re7+ 1-0

[Event "IBM"]
[Site "Amsterdam NED"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "7"]
[Result "1-0"]
[White "Lubomir Kavalek"]
[Black "Jan Hein Donner"]
[ECO "D54"]
[WhiteElo "2550"]
[BlackElo "2475"]
[PlyCount "71"]

1.c4 e6 2.Nc3 d5 3.d4 Nf6 4.Bg5 Be7 5.e3 O-O 6.Rc1 Ne4 7.Bxe7
Qxe7 8.Nf3 c6 9.Bd3 Nxc3 10.Rxc3 Nd7 11.Qc2 g6 12.O-O dxc4
13.Bxc4 e5 14.d5 c5 15.Rd1 Qd6 16.Nd2 f5 17.Bb5 a6 18.Bxd7
Bxd7 19.Rxc5 Rac8 20.Rxc8 Rxc8 21.Qb3 b5 22.e4 Qc5 23.Nf3 Qd6
24.h3 Rc4 25.exf5 gxf5 26.Qe3 e4 27.Qg5+ Kf7 28.Qh5+ Kg8
29.Nd4 Qxd5 30.Nc2 Qc6 31.Qg5+ Kf7 32.Qd8 Bc8 33.Rd6 Qxd6
34.Qxd6 Rxc2 35.b4 Kg7 36.h4 1-0

[Event "Svendborg DEN"]
[Site "It"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "5"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Ivan Farago"]
[ECO "E55"]
[WhiteElo "2475"]
[BlackElo "2535"]
[PlyCount "36"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 c5 6.Nf3 d5 7.O-O
dxc4 8.Bxc4 Nbd7 9.Bd3 b6 10.a3 cxd4 11.exd4 Bxc3 12.bxc3 Qc7
13.Bd2 Bb7 14.Re1 Rad8 15.Qe2 Nd5 16.Qe4 N5f6 17.Qe2 Nd5
18.Qe4 N5f6 1/2-1/2

[Event "IBM"]
[Site "Amsterdam NED"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "4"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Hans Ree"]
[ECO "E60"]
[WhiteElo "2475"]
[BlackElo "2485"]
[PlyCount "88"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 c5 5.d5 O-O 6.Nc3 d6 7.Nf3 e6
8.O-O exd5 9.cxd5 a6 10.a4 Nbd7 11.h3 Re8 12.Nd2 Rb8 13.Nc4
Nb6 14.Na3 Bd7 15.a5 Nc8 16.Nc4 Bb5 17.Qb3 Na7 18.Bd2 Bxc4
19.Qxc4 Qd7 20.e3 Nb5 21.Ra2 b6 22.axb6 Rxb6 23.Rfa1 Nc7
24.Na4 Rb7 25.Nc3 Reb8 26.Bc1 Rb4 27.Qd3 Qe7 28.Ra4 Nd7
29.Rxb4 Rxb4 30.Qc2 Rb8 31.Bf1 Nb6 32.e4 Qd7 33.h4 Re8 34.Bxa6
Nxa6 35. Rxa6 Rb8 36.Qb3 Qb7 37.Qb5 Be5 38.Bh6 f6 39.Nd1 f5
40.exf5 Nxd5 41.Qxb7 Rxb7 42.fxg6 hxg6 43.f4 Bd4+ 44.Kf1 Nb6
1/2-1/2

[Event "IBM"]
[Site "Amsterdam NED"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "6"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Kick Langeweg"]
[ECO "E12"]
[WhiteElo "2475"]
[BlackElo "2455"]
[PlyCount "85"]

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.e4 Bxf1 10.Kxf1 d6 11.g3 O-O 12.Kg2 a6 13.Bf4
Qc7 14.h3 Nbd7 15.g4 Rfe8 16.Rhe1 h5 17.g5 Nh7 18.Rad1 b5
19.b3 Nhf8 20.Bg3 Rac8 21.a4 Qa5 22.Nb1 Qb6 23.Nbd2 Nh7 24.Re2
Qc7 25.Rde1 Nhf8 26.axb5 axb5 27.Qd3 c4 28.bxc4 bxc4 29.Qc2 c3
30.Nb3 Qb6 31.Rd1 Rc4 32.Nc1 Qc7 33.Nb3 Qb6 34.Nc1 Qc7 35. Nb3
Rb8 36.Nbd4 Rb2 37.Qd3 Rxe2 38.Nxe2 c2 39.Rc1 Bb2 40.Bxd6 Qc8
41.Nd2 Rc7 42.Bxc7 Bxc1 43.Bf4 1-0

[Event "NED-ch"]
[Site "Leeuwarden NED"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Herman Grooten"]
[ECO "E41"]
[WhiteElo "2475"]
[BlackElo "?"]
[PlyCount "97"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 Nc6 6.Nf3 Bxc3+
7.bxc3 d6 8.e4 e5 9.d5 Ne7 10.Nh4 h6 11.g3 g5 12.Ng2 Bh3
13.Ne3 Qd7 14.f3 O-O-O 15.Rb1 h5 16.Rb2 Nh7 17.Rg1 f5 18.exf5
Nxf5 19.g4 Nxe3 20.Bxe3 hxg4 21.fxg4 Qg7 22. Bf5+ Kb8 23.Rg3
Nf6 24.Qb3 Rdf8 25.Bxg5 Rf7 26.Bxf6 Qxf6 27.Rf2 Qh4 28.Qc2 Rg7
29.g5 Bxf5 30.Qxf5 Qxc4 31.Qf6 Qe4+ 32.Kf1 Rgg8 33.Qxd6+ Ka8
34.g6 Qb1+ 35.Kg2 Qe4+ 36.Kg1 Qe1+ 37.Rf1 Qe2 38.h3 Rc8 39.g7
Rxh3 40.Rxh3 Qg4+ 41.Kf2 Qxh3 42.Qf8 Qh2+ 43.Ke3 Qg3+ 44.Kd2
Qg2+ 45.Kc1 Qg5+ 46.Kc2 Qg2+ 47.Kb1 Kb8 48.Qd6+ Ka8 49.Rf8 1-0

[Event "NED-ch"]
[Site "Leeuwarden NED"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "3"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Robert G Hartoch"]
[ECO "A56"]
[WhiteElo "2475"]
[BlackElo "2405"]
[PlyCount "66"]

1.d4 Nf6 2.c4 c5 3.d5 g6 4.Nc3 Bg7 5.e4 d6 6.Bd3 O-O 7.Nge2 e6
8.h3 exd5 9.exd5 Nbd7 10.f4 a6 11.a4 Nh5 12.O-O f5 13.Be3 Re8
14.Bf2 Nf8 15.Qd2 Bd7 16.Ra3 a5 17.Kh1 b6 18.Ng1 Ra7 19.Be2
Nf6 20.Bh4 Bc8 21.Nf3 Rae7 22.Bd3 N8d7 23.Rg1 Nb8 24.Raa1 Na6
25.Raf1 Nb4 26.Bb1 Kh8 27.Nh2 Re3 28.Bf2 R3e7 29.g4 Rf7
30.gxf5 Bxf5 31.Bxf5 gxf5 32.Nf3 h6 33.Bh4 Qd7 1/2-1/2

[Event "NED-ch"]
[Site "Leeuwarden NED"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "4"]
[Result "1/2-1/2"]
[White "Gert Ligterink"]
[Black "Jan Hein Donner"]
[ECO "B09"]
[WhiteElo "2430"]
[BlackElo "2475"]
[PlyCount "43"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3 O-O 6.Be3 c5 7.dxc5
Qa5 8.Bd3 Ng4 9.Bd2 Qxc5 10.Qe2 Nf6 11.O-O-O Nc6 12.h3 Nb4
13.g4 Nxd3+ 14.Qxd3 Be6 15. Be3 Qa5 16.Kb1 Rfc8 17.Bd4 b5
18.b3 b4 19.Ne2 Bd7 20.c4 bxc3 21.Nxc3 Bc6 22.Rhe1 1/2-1/2

[Event "NED-ch"]
[Site "Leeuwarden NED"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "5"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Hans Bohm"]
[ECO "E23"]
[WhiteElo "2475"]
[BlackElo "2390"]
[PlyCount "75"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Qb3 c5 5.dxc5 Nc6 6.Nf3 Ne4 7.Bd2
Nxd2 8.Nxd2 O-O 9.e3 Bxc5 10.Be2 f5 11.O-O b6 12.g3 Bb7 13.Bf3
Qc8 14.Rac1 Ne5 15.Bxb7 Qxb7 16.Ne2 Rad8 17.Qc3 Nf7 18.b4 Be7
19.Nd4 Bf6 20.Qd3 g6 21.Qe2 e5 22. N4b3 e4 23.f4 exf3 24.Nxf3
Rfe8 25.Rfd1 Re7 26.Rd3 Rde8 27.Nbd2 Ng5 28. Nxg5 Bxg5 29.Nf1
Re4 30.Qd2 R8e7 31.a3 f4 32.gxf4 Bxf4 33.Qg2 Bh6 34.Ng3 Qc6
35.Nxe4 Rxe4 36.Kh1 Bxe3 37.Re1 Qxc4 38.Qe2 1-0

[Event "NED-ch"]
[Site "Leeuwarden NED"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "6"]
[Result "0-1"]
[White "Rini Kuijf"]
[Black "Jan Hein Donner"]
[ECO "B14"]
[WhiteElo "?"]
[BlackElo "2475"]
[PlyCount "108"]

1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 e6 6.Nf3 Bb4 7.cxd5
Qxd5 8.Bd3 O-O 9.O-O Bxc3 10.bxc3 b6 11.c4 Qd6 12.Bg5 Nbd7
13.Re1 h6 14.Bh4 Bb7 15. Ne5 Nxe5 16.dxe5 Qc6 17.f3 Nd7 18.Be7
Rfe8 19.Bd6 Nc5 20.Bc2 Ba6 21.Qd4 Rac8 22.Rac1 Nb7 23.Qd3 g6
24.Bb3 Red8 25.Red1 Nxd6 26.exd6 Rd7 27.Qd2 Rcd8 28.Qxh6 Qc5+
29.Kh1 Rxd6 30.Re1 Rd2 31.Qh4 Bb7 32.Rcd1 R8d4 33.Qg3 Rxd1
34.Bxd1 Kg7 35.Qb8 Bc6 36.Bb3 a5 37.a3 a4 38.Ba2 e5 39.h3 f6
40.Qc7+ Rd7 41.Qc8 Rd2 42.Qc7+ Kf8 43.Qh7 Rxa2 44.Qh8+ Kf7
45.Qh7+ Kf8 46.Qh8+ Ke7 47.Qg7+ Kd8 48.Qxf6+ Kc8 49.Rxe5 Qxc4
50.Kh2 Kb7 51.Rg5 Qe2 52.Qf7+ Ka6 53.Rxg6 Bxf3 54.Qc7 Qxg2+
0-1

[Event "NED-ch"]
[Site "Leeuwarden NED"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "7"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Paul Van der Sterren"]
[ECO "D32"]
[WhiteElo "2475"]
[BlackElo "2440"]
[PlyCount "98"]

1.d4 d5 2.c4 e6 3.Nc3 c5 4.e3 Nf6 5.Nf3 Nc6 6.a3 a6 7.cxd5
exd5 8.dxc5 Bxc5 9.b4 Ba7 10.b5 axb5 11.Nxb5 Bb8 12.Be2 O-O
13.O-O Ne4 14.Bb2 Re8 15. Qc2 Bg4 16.Rfd1 Re6 17.g3 Rg6 18.Nc3
Nxc3 19.Bxc3 h5 20.e4 Bxf3 21.Bxf3 d4 22.Bxh5 Rh6 23.Be2 Qf6
24.Bd2 Rxh2 25.Rf1 d3 26.Qxd3 Rxf2 27.e5 Rxf1+ 28. Rxf1 Qxe5
29.Kg2 Qe7 30.Bd1 Rxa3 31.Bb3 Ne5 32.Qc3 Qd7 33.Bf4 Qc6+
34.Qxc6 bxc6 35.Bxf7+ Nxf7 36.Bxb8 Rb3 37.Bf4 Rc3 38.Rd1 g5
39.Bc7 Kg7 40.g4 Kg6 41.Rd4 Kf6 42.Re4 c5 43.Kf1 Rc2 44.Ke1
Rb2 45.Ba5 Rb3 46.Kd2 Nd6 47.Bd8+ Kf7 48.Re7+ Kf8 49.Re6 Nf7
1/2-1/2

[Event "NED-ch"]
[Site "Leeuwarden NED"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "8"]
[Result "0-1"]
[White "Paul Boersma"]
[Black "Jan Hein Donner"]
[ECO "E48"]
[WhiteElo "2335"]
[BlackElo "2475"]
[PlyCount "100"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 O-O 5.Bd3 d5 6.a3 dxc4 7.Bxh7+
Nxh7 8.axb4 e5 9.Nf3 Bg4 10.h3 Bxf3 11.Qxf3 Nc6 12.O-O exd4
13.exd4 Qf6 14.Qxf6 Nxf6 15.b5 Nxd4 16.Ra4 c6 17.bxc6 Nxc6
18.Rxc4 Rfe8 19.Rd1 Rad8 20.Rxd8 Rxd8 21.Rc5 Rd7 22.Bg5 Ne8
23.Rd5 Rxd5 24.Nxd5 f6 25.Be3 Kf7 26.Kf1 Ke6 27.Nc3 Nd6 28.Ke2
Nc4 29.Bc1 a6 30.Kd3 N4e5+ 31.Ke4 f5+ 32.Ke3 Na5 33.Ke2 Nb3
34. Bf4 Nc4 35.Nd1 b5 36.Kd3 a5 37.Kc3 Nc5 38.f3 Kd5 39.Ne3+
Nxe3 40.Bxe3 b4+ 41.Kc2 a4 42.g4 Ne6 43.Kd3 f4 44.Bd2 Nd4
45.Bxb4 Nxf3 46.Bc3 Ne5+ 47.Bxe5 Kxe5 48.h4 f3 49.g5 Kf5
50.Ke3 Kg4 0-1

[Event "NED-ch"]
[Site "Leeuwarden NED"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "9"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Kick Langeweg"]
[ECO "E41"]
[WhiteElo "2475"]
[BlackElo "2455"]
[PlyCount "67"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 Nc6 6.Nf3 Bxc3+
7.bxc3 d6 8.e4 e5 9.d5 Ne7 10.Nd2 Qa5 11.Qb3 O-O 12.Qc2 Ne8
13.f3 f5 14.exf5 Bxf5 15.Ne4 Bxe4 16.Bxe4 Nf6 17.Bd3 e4
18.fxe4 Ng6 19.O-O Ng4 20.Rf5 N4e5 21.Be2 Ne7 22.Rg5 Rf6
23.Be3 h6 24.Rg3 Raf8 25.Rf1 Qd8 26.Rxf6 Rxf6 27.Qd2 N7g6
28.h4 Qf8 29.Bxh6 gxh6 30.h5 Kh7 31.hxg6+ Rxg6 32.Rxg6 Kxg6
33.Qe3 Qf6 34.Qh3 1/2-1/2

[Event "NED-ch"]
[Site "Leeuwarden NED"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "10"]
[Result "1/2-1/2"]
[White "Coen Stehouwer"]
[Black "Jan Hein Donner"]
[ECO "E54"]
[WhiteElo "?"]
[BlackElo "2475"]
[PlyCount "84"]

1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3 e6 6.Nf3 Bb4 7.Bd3
O-O 8.O-O dxc4 9.Bxc4 b6 10.Bg5 Bb7 11.Ne5 Be7 12.Re1 Nc6
13.Ba6 Qc8 14.Qf3 Na5 15. Bxb7 Qxb7 16.Qxb7 Nxb7 17.Nc6 Bd6
18.Rac1 Rfe8 19.b4 Nd7 20.Rc2 a6 21.Rec1 f6 22.Be3 Bf8 23.d5
Nd8 24.dxe6 Rxe6 25.Nd4 Re5 26.Bf4 Re8 27.Nd5 Re4 28. Be3 Re5
29.Nc7 Ra7 30.Nf3 Re4 31.Rd1 Re7 32.h3 Ne6 33.Nd5 Re8 34.Nxb6
Nxb6 35.Bxb6 Rb7 36.Bc5 Nxc5 37.bxc5 Rc7 38.c6 Rec8 39.Nd4 Bd6
40.Nf5 Bf8 41. Nd4 Bd6 42.Nb3 Bf8 1/2-1/2

[Event "NED-ch"]
[Site "Leeuwarden NED"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "11"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Fred Van der Vliet"]
[ECO "A73"]
[WhiteElo "2475"]
[BlackElo "2395"]
[PlyCount "77"]

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.e4
Bg7 8.Be2 O-O 9.O-O Bg4 10.Bf4 Re8 11.Nd2 Bxe2 12.Qxe2 Nh5
13.Be3 Nd7 14.g4 Nhf6 15.h3 h5 16.g5 Nh7 17.f4 Nb6 18.a4 Qd7
19.Kg2 Bxc3 20.bxc3 Nxa4 21.c4 a6 22.Qd3 b5 23.Rfb1 b4 24.Re1
Nc3 25.e5 dxe5 26.Bxc5 e4 27.Nxe4 Qf5 28.Nf2 Rxe1 29. Rxe1
Qxd3 30.Nxd3 a5 31.Bd4 Na2 32.c5 Nf8 33.c6 Rc8 34.Ne5 b3
35.Nd7 Nb4 36.Re8 Rxe8 37.Nf6+ Kh8 38.Nxe8+ Kg8 39.c7 1-0

[Event "NED-ch"]
[Site "Leeuwarden NED"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "12"]
[Result "1-0"]
[White "Hans Ree"]
[Black "Jan Hein Donner"]
[ECO "D37"]
[WhiteElo "2485"]
[BlackElo "2475"]
[PlyCount "75"]

1.d4 Nf6 2.c4 e6 3.Nf3 d5 4.Nc3 Be7 5.Bf4 O-O 6.e3 b6 7.Rc1
Bb7 8.cxd5 exd5 9.Be2 c5 10.O-O Nc6 11.Ne5 Nxe5 12.Bxe5 Ne4
13.Nxe4 dxe4 14.Qa4 Bf6 15.Bxf6 Qxf6 16.dxc5 bxc5 17.Qb5 Qb6
18.Rc2 Rac8 19.Rfc1 Rfd8 20.g3 g6 21. b3 Rd5 22.b4 Bc6 23.Qa6
Bb7 24.Qa3 Rcd8 25.bxc5 Qf6 26.c6 Ba8 27.c7 Rf8 28.Qxa7 Qe5
29.Rc5 Qb2 30.R5c2 Qe5 31.Qb6 h6 32.h4 Rd6 33.Qb2 Qf5 34.Rd2
Rf6 35.Bf1 g5 36.hxg5 Qxg5 37.Rd8 h5 38.Qb4 1-0

[Event "Svendborg DEN"]
[Site "It"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "1"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Jacob Ost-Hansen"]
[ECO "E69"]
[WhiteElo "2475"]
[BlackElo "2395"]
[PlyCount "83"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 O-O 5.Nc3 d6 6.Nf3 Nbd7 7.O-O
e5 8.e4 c6 9.h3 Qb6 10.Re1 Re8 11.d5 Nc5 12.Rb1 a5 13.Bf1 Bd7
14.Be3 Qc7 15.Nd2 Rec8 16.Qf3 Qb8 17.Rec1 cxd5 18.cxd5 b5
19.b3 a4 20.b4 Na6 21.Qe2 Nc7 22.g4 Qb7 23.Qd3 h5 24.g5 Nh7
25.f4 f6 26.gxf6 Bxf6 27.fxe5 dxe5 28.d6 Ne6 29.Nd5 Rxc1
30.Nxf6+ Nxf6 31.Rxc1 Rc8 32.Rxc8+ Qxc8 33.Nf3 Bc6 34.Qc3 Nxe4
35. Qxe5 Qd7 36.Nd4 Nxd4 37.Bxd4 Nxd6 38.Bd3 Nf5 39.Qh8+ Kf7
40.Qf6+ Ke8 41. Qxg6+ Kd8 42.Bb6+ 1-0

[Event "Svendborg DEN"]
[Site "It"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "3"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Lars Karlsson"]
[ECO "E41"]
[WhiteElo "2475"]
[BlackElo "2465"]
[PlyCount "58"]

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 c5 5.Bd3 O-O 6.Nf3 Nc6 7.O-O
Bxc3 8.bxc3 d6 9.e4 e5 10.h3 h6 11.Qe2 Re8 12.dxc5 dxc5 13.Ne1
Qa5 14.Bd2 Ne7 15.Kh2 Ng6 16.g3 Qc7 17.f3 Rd8 18.f4 exf4
19.gxf4 Qd7 20.Rf3 b5 21.Rd1 Bb7 22.Ng2 bxc4 23.Bc2 Qc6 24.Re3
Re8 25.Re1 Rad8 26.Bc1 Qc7 27.e5 Bxg2 28.exf6 Rxe3 29.Qxe3 Bd5
1/2-1/2

[Event "Svendborg DEN"]
[Site "It"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "4"]
[Result "1/2-1/2"]
[White "Jacek B Bednarski"]
[Black "Jan Hein Donner"]
[ECO "B10"]
[WhiteElo "2380"]
[BlackElo "2475"]
[PlyCount "17"]

1.e4 c6 2.Ne2 d5 3.e5 c5 4.d4 Nc6 5.c3 e6 6.a3 Qb6 7.b4 cxb4
8.cxb4 a5 9. Qa4 1/2-1/2

[Event "Svendborg DEN"]
[Site "It"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "6"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Allan Poulsen"]
[ECO "D71"]
[WhiteElo "2475"]
[BlackElo "2400"]
[PlyCount "75"]

1.d4 Nf6 2.c4 g6 3.g3 Bg7 4.Bg2 d5 5.cxd5 Nxd5 6.Nf3 Nc6 7.Nc3
Nb6 8.e3 O-O 9.O-O e5 10.d5 Na5 11.e4 c6 12.h3 cxd5 13.exd5
Re8 14.Re1 Nac4 15.a4 a5 16.Qb3 Bd7 17.Nd2 Qc8 18.Bf1 Nxd2
19.Bxd2 Qd8 20.Rad1 Nc8 21.Nb5 Bf8 22.Rc1 Bd6 23.Nxd6 Nxd6
24.Be3 Nf5 25.Bc5 Rb8 26.Bb6 Bxa4 27.Bxd8 Bxb3 28. Bc7 Ra8
29.d6 Nd4 30.Bg2 Ba4 31.Bxb7 Rab8 32.Bxb8 Rxb8 33.Bg2 Rxb2
34.Rc8+ Kg7 35.Rxe5 Bd7 36.Rc7 Bxh3 37.d7 Rd2 38.d8=Q 1-0

[Event "Svendborg DEN"]
[Site "It"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "8"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Pedersen"]
[ECO "A89"]
[WhiteElo "2475"]
[BlackElo "?"]
[PlyCount "41"]

1.d4 f5 2.g3 Nf6 3.Bg2 g6 4.Nf3 Bg7 5.O-O O-O 6.c4 d6 7.Nc3
Nc6 8.d5 Na5 9.Qa4 c5 10.dxc6 bxc6 11.Nd4 Bd7 12.Nxc6 Nxc6
13.Bxc6 Bxc6 14.Qxc6 Rc8 15. Qa4 Qd7 16.b3 d5 17.Qxd7 Nxd7
18.Bd2 dxc4 19.Rac1 Nb6 20.Nb1 cxb3 21.axb3 1/2-1/2

[Event "Svendborg DEN"]
[Site "It"]
[Date "1981.??.??"]
[EventDate "?"]
[Round "9"]
[Result "1/2-1/2"]
[White "Jorn Sloth"]
[Black "Jan Hein Donner"]
[ECO "A15"]
[WhiteElo "2380"]
[BlackElo "2475"]
[PlyCount "22"]

1.c4 Nf6 2.Nf3 c6 3.Nc3 d5 4.cxd5 cxd5 5.d4 Nc6 6.Bf4 e6 7.e3
Bd6 8.Bxd6 Qxd6 9.Be2 e5 10.dxe5 Nxe5 11.Nxe5 Qxe5 1/2-1/2

[Event "It Marbella"]
[Site "It Marbella"]
[Date "1982.??.??"]
[EventDate "?"]
[Round "?"]
[Result "1/2-1/2"]
[White "Jan Hein Donner"]
[Black "Mark Hebden"]
[ECO "A58"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "96"]

1. d4 Nf6 2. c4 c5 3. d5 b5 4. cxb5 a6 5. bxa6 Bxa6 6. Nc3 d6
7. Nf3 g6 8. Nd2 Qa5 9. g3 Bg7 10. e4 Bxf1 11. Kxf1 Nbd7
12. Nc4 Qa6 13. Qe2 O-O 14. Bg5 Rfb8 15. Rc1 h6 16. Bd2 Nb6
17. Nxb6 Rxb6 18. Qxa6 Raxa6 19. b3 Nd7 20. Na4 Rb7 21. Ke2
Nb6 22. Nxb6 Rbxb6 23. Rc2 Ra3 24. Bc1 Ra7 25. Rd1 Rba6
26. Rdd2 h5 27. Kd1 e6 28. Re2 Bd4 29. Bb2 Rxa2 30. Bxd4 Rxc2
31. Kxc2 cxd4 32. dxe6 fxe6 33. Kd3 Rb7 34. Kc4 d5+ 35. Kxd4
Rxb3 36. exd5 exd5 37. Kxd5 Kf7 38. f4 Kf6 39. Re6+ Kf5
40. Re5+ Kf6 41. Ke4 Rb2 42. h4 Rb3 43. Rg5 Ra3 44. f5 Ra4+
45. Kf3 Ra3+ 46. Kg2 Ra2+ 47. Kh3 gxf5 48. Rxh5 Ra3 1/2-1/2

[Event "Amsterdam OHRA"]
[Site "Amsterdam OHRA"]
[Date "1982.??.??"]
[EventDate "?"]
[Round "6"]
[Result "1-0"]
[White "Nigel Short"]
[Black "Jan Hein Donner"]
[ECO "B07"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "59"]

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nge2 Bg7 5.g3 O-O 6.Bg2 e5 7.O-O
exd4 8.Nxd4 Nc6 9.Nde2 Re8 10.h3 Nd7 11.Kh2 Nb6 12.a4 a5 13.b3
Nb4 14.Be3 Nd7 15.Qd2 Nc5 16.Rad1 Qe7 17.Rfe1 Nca6 18.Nf4 Bd7
19.Nfd5 Qd8 20.Bg5 f6 21.Be3 Bc6 22.Bd4 Bd7 23.Be3 Nxd5
24.Nxd5 b6 25.e5 Rxe5 26.Nxb6 cxb6 27.Qxd6 Rxe3 28.Rxe3 Ra7
29.Re7 Nb8 30.Qe6+ 1-0

[Event "Exhibition game"]
[Site "Delft"]
[Date "1982.03.05"]
[EventDate "1982.03.05"]
[Round "?"]
[Result "1-0"]
[White "Jan Hein Donner"]
[Black "Belle (Computer)"]
[ECO "D52"]
[WhiteElo "2460"]
[BlackElo "?"]
[PlyCount "112"]

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6 5.Bg5 Nbd7 6.e3 Qa5 7.Nd2
Bb4 8.Qc2 O-O 9.Be2 dxc4 10.Bxf6 Nxf6 11.Nxc4 Qc7 12.O-O Rfd8
13.a3 Be7 14.b4 b6 15.Rfc1 Bb7 16.Bf3 a6 17.Rab1 Nd7 18.a4
Rab8 19.g3 Kh8 20.Bg2 f5 21.Ne2 Re8 22.Nf4 Bg5 23.Nd3 Bf6
24.f4 Rec8 25.a5 b5 26.Nd2 Ba8 27.Nb3 Qa7 28.Qe2 Rc7 29.Nbc5
Nf8 30.Rc2 Re8 31.Rbc1 Kg8 32.Bf3 Rd8 33.g4 Rdc8 34.Rc3 fxg4
35.Bxg4 Re7 36.Qa2 Rce8 37.f5 Rd8 38.Nf4 Bxd4 39.exd4 Rxd4
40.f6 Rxf4 41.fxe7 Rxg4+ 42.Rg3 Rxg3+ 43.hxg3 Qxe7 44.Qd2 h6
45.Rd1 Qe8 46.Qd6 e5 47.Qc7 Qh5 48.Rf1 Qe8 49.Qd6 e4 50.Rf4 e3
51.Re4 Qc8 52.Rxe3 h5 53.Re7 Qf5 54.Qf4 Qg6 55.Ra7 Qe8 56.Qd4
Qg6 1-0

