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
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Event
Site
Amsterdam
Date
1974.07.31
Round
13
White
Donner, Jan Hein
Black
Result
1/2-1/2
[Event "IBM"] [Site "Amsterdam"] [Date "1974.07.31"] [Round "13"] [White "Donner, Jan Hein"] [Black "Ivkov, Borislav"] [Result "1/2-1/2"] 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