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
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Event
Site
Amsterdam
Date
1964.07.21
Round
1
White
Black
Donner, Jan Hein
Result
1/2-1/2
Score
[Event "IBM"] [Site "Amsterdam"] [Date "1964.07.21"] [Round "1"] [White "Larsen, Bent"] [Black "Donner, Jan Hein"] [Result "1/2-1/2"] 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