[Event "IBM"]
[Site "Amsterdam"]
[Date "1968.??.??"]
[Round "3"]
[White "Kavalek, Lubomir"]
[Black "Zuidema, Coen"]
[Result "1-0"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. d4 Be7 5. Bg5 O-O 6. e3 h6 7. Bh4 Nbd7 8. Rc1 c6 9. a3 a6 10. Bd3 dxc4 11. Bxc4 b5 12. Ba2 c5 13. O-O Bb7 14. Qe2 cxd4 15. Nxd4 Rc8 16. Rfd1 Nd5 17. Bxd5 Bxd5 18. Bxe7 Qxe7 19. Nxd5 exd5 20. Rc2 Nf6 21. Nc6 Qb7 22. Rdc1 Kh8 23. h3 Qb6 24. Nd4 Rc4 25. b3 Rxc2 26. Qxc2 Qd6 27. Qc5 Rd8 28. Qc7 Rd7 29. Qa5 Ne4 30. Rc6 Qe7 31. Qxa6 b4 32. a4 Kh7 33. Qe2 Nc3 34. Qd3+ g6 35. Nc2 Na2 36. Qd4 Nc1 37. Qxb4 Qxb4 38. Nxb4 Nxb3 39. Rc3 Nd2 40. Rd3 Rb7 41. Rxd2 Rxb4 42. Ra2 Rb6 43. a5 Ra6 44. Kf1 Kg7 45. Ke2 Kf6 46. Kd3 Ke6 47. Kc3 Kd6 48. Kb4 Kc6 49. Rc2+ Kb7 50. Kb5 Rf6 51. Ra2 Rf5 52. a6+ Ka7 53. Kc5 h5 54. h4 g5 55. hxg5 Rxg5 56. f4 Rg3 57. Kd4 h4 58. Re2 Kxa6 59. Kxd5 Kb5 60. e4 Kb4 61. Kd4 Kb3 1-0