[Event "IBM"]
[Site "Amsterdam"]
[Date "1962.08.16"]
[Round "3"]
[White "Kool, Gerard J"]
[Black "Heidenfeld, Wolfgang"]
[Result "1-0"]

1. d4 e6 2. e4 d5 3. e5 c5 4. c3 Qb6 5. Nf3 Bd7 6. Bd3 Bb5 7. O-O Bxd3 8. Qxd3 Qa6 9. Qd1 Nd7 10. Be3 Rc8 11. Nbd2 Ne7 12. Nh4 Ng6 13. Qh5 cxd4 14. cxd4 Nxh4 15. Qxh4 Be7 16. Qg4 g6 17. Bh6 f5 18. exf6 Nxf6 19. Qh3 Rg8 20. Bg5 Rg7 21. Rfe1 Rc6 22. Re5 Nd7 23. Bh6 Rf7 24. Re3 Bf6 25. Rae1 Re7 26. Nf3 Qb6 27. Bg5 Bxg5 28. Nxg5 Nf8 29. Qg3 Qc7 30. Qg4 Rc1 31. h4 Rxe1+ 32. Rxe1 Qa5 33. Qe2 Qc7 34. g3 Qd6 35. h5 h6 36. Nf3 Kf7 37. Ne5+ Kg7 38. hxg6 Qb4 39. Rd1 Qa4 40. b3 Qe8 41. Qh5 Nxg6 42. Ng4 Qh8 43. Rc1 Qh7 44. Rc8 Rf7 45. Ne5 Nxe5 46. Qxe5+ Kg6 47. Qxe6+ Kh5 48. Qxd5+ Kg4 49. Qe6+ Qf5 50. Rg8+ 1-0