[Event "IBM"]
[Site "Amsterdam"]
[Date "1972.??.??"]
[Round "?"]
[White "Kortschnoj, Viktor Lvovich"]
[Black "Timman, Jan H"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 c6 5. Bg2 d5 6. Qb3 O-O 7. O-O dxc4 8. Qxc4 Bf5 9. Nc3 Nbd7 10. e3 Ne4 11. Qe2 e5 12. Rd1 Nxc3 13. bxc3 Qc7 14. e4 Bg4 15. h3 Bxf3 16. Bxf3 Rad8 17. Bg5 Rde8 18. Rab1 f5 19. Qc4+ Kh8 20. d5 Nb6 21. d6 Qd7 22. Qe2 Na4 23. Qc2 Nc5 24. Be7 fxe4 25. Bg4 Rf5 26. Qe2 Bf8 27. Qc4 b6 28. Bxf5 gxf5 29. Qf7 Bg7 30. h4 f4 31. Kh2 Nd3 32. Rxd3 exd3 33. gxf4 Rf8 34. Qh5 Rxf4 35. f3 e4 36. fxe4 Qe6 37. Rg1 d2 38. d7 Qxd7 39. Rxg7 Rf2+ 40. Kg3 Kxg7 41. Kxf2 Qxe7 42. Qg4+ Kf7 43. Ke2 Qe6 44. Qf4+ Ke7 45. Qc7+ Qd7 46. Qe5+ Qe6 1/2-1/2