[Event "Alekhine memorial"]
[Round "6"]
[Site "Moscow"]
[Date "1971.11.30"]
[White "Kortschnoj, Viktor"]
[WhiteElo "2670"]
[Black "Olafsson, Fridrik"]
[BlackElo "2570"]
[Result "1/2-1/2"]
[ECO "A13"]
[Opening "English Opening"]
 1. c4   e6
 2. g3   d5
 3. Bg2  Nf6
 4. Nf3  dxc4
 5. Qa4+ Nbd7
 6. Qxc4 a6
 7. Qc2  c5
 8. Nc3  Qc7
 9. O-O  b6
10. d4   Bb7
11. Bf4  Bd6
12. Bxd6 Qxd6
13. Rfd1 O-O
14. e4   cxd4
15. Nxd4 Qc7
16. Qe2  Ra7
17. Rac1 Qb8
18. a4   Ba8
19. b4   Rc8
20. b5   Rac7
21. e5   Bxg2
22. Kxg2 Qb7+
23. Nc6  Ne8
24. Qf3  Nxe5
25. Nxe5 Qxf3+
26. Nxf3 axb5
27. Na2  Rxc1
28. Rxc1 Rxc1
29. Nxc1 bxa4
30. Nd4  Nd6
31. Na2  e5
32. Nc6  f6
33. Nc3  b5
34. Kf3  Kf7
35. Ke2  Ke6
36. Kd1  Kf5
37. h3   h5
38. Kc2  h4
39. gxh4 Kf4
40. Na7  Kf3
41. Naxb5 Nxb5
42. Nxb5 Kxf2
43. Nd6  g6
44. Ne4+ Kf3
45. Nc5  a3
46. Kb3  e4
47. Kxa3 f5
48. Kb3  Kg3
49. Kc3  Kxh4
50. Kd4  Kxh3
51. Ke3  g5
52. Ne6  Kg4
53. Nd4  
1/2-1/2