[Event "IBM"]
[Site "Amsterdam"]
[Date "1962.08.25"]
[Round "9"]
[White "Kool, Gerard J"]
[Black "Rellstab, Ludwig Sr"]
[Result "0-1"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Bd2 Qe7 5. a3 Bxd2+ 6. Nbxd2 d6 7. e4 e5 8. Bd3 O-O 9. O-O Bg4 10. Qb3 Nc6 11. Qc3 b6 12. d5 Nb8 13. b4 Bxf3 14. Nxf3 Nbd7 15. g3 a5 16. Nh4 g6 17. Qd2 Nh5 18. Qh6 Ndf6 19. Be2 Ng7 20. Qe3 Ra7 21. c5 dxc5 22. bxc5 Qxc5 23. Qxc5 bxc5 24. f3 Rb8 25. a4 Rb2 26. Bb5 g5 27. Ng2 g4 28. Ra3 Ra8 29. Ne1 gxf3 30. Raxf3 Nxe4 31. Nd3 Rxb5 32. axb5 Nd2 33. Nxe5 Nxf3+ 34. Rxf3 f5 35. Nc4 Rd8 36. Rd3 Rb8 37. Rb3 a4 38. Rb1 Ne8 39. Kf2 Nd6 40. Na3 Kf7 41. Rc1 Kf6 42. Ke3 Nxb5 43. Nc4 Nd6 44. Nd2 Rb2 45. Kd3 a3 46. Ra1 Rb4 47. Ke3 Rd4 0-1