[Event "IBM"]
[Site "Amsterdam"]
[Date "1962.08.24"]
[Round "8"]
[White "Dunkelblum, Arthur"]
[Black "Kool, Gerard J"]
[Result "1-0"]

1. Nf3 Nf6 2. g3 b6 3. Bg2 Bb7 4. O-O e6 5. c4 Be7 6. Nc3 O-O 7. d4 d5 8. Ne5 c5 9. cxd5 exd5 10. dxc5 Bxc5 11. Nd3 Na6 12. Bg5 Be7 13. Nf4 Nc7 14. Qb3 Ne4 15. Bxe7 Qxe7 16. Nfxd5 Nxd5 17. Nxd5 Qe5 18. Rfd1 Rad8 19. Ne3 Qf6 20. Ng4 Qf5 21. Qf3 Qb5 22. Qe3 Qf5 23. Qf4 Qxf4 24. gxf4 f5 25. Ne5 Ba6 26. Kf1 Bb5 27. Ke1 a5 28. Rxd8 Rxd8 29. Bxe4 fxe4 30. Rd1 Rc8 31. Rd6 g5 32. Rxb6 Rc5 33. Ng4 gxf4 34. Nf6+ Kg7 35. Nxe4 Re5 36. f3 Be8 37. Kf2 Bg6 38. Ra6 Rb5 39. b3 h5 40. Nd6 Rg5 41. Nc4 h4 42. Rxa5 Bf5 43. Nd6 h3 44. Rxf5 Rg2+ 45. Kf1 1-0