[Event "IBM"]
[Site "Amsterdam"]
[Date "1965.??.??"]
[Round "6"]
[White "Zuidema, Coen"]
[Black "Karaklajic, Nikola"]
[Result "0-1"]

1. e4 d5 2. exd5 Nf6 3. d4 Nxd5 4. Nf3 Bg4 5. c4 Nb6 6. c5 N6d7 7. Qb3 Nc6 8. Be3 Bxf3 9. gxf3 Rb8 10. d5 Nce5 11. Be2 h5 12. Nc3 c6 13. f4 Ng4 14. O-O-O Nxe3 15. fxe3 Qa5 16. Ne4 Nxc5 17. Nxc5 Qxc5+ 18. Kb1 Qb6 19. dxc6 bxc6 20. Bf3 Rh6 21. Qc2 e5 22. Rd3 Be7 23. Rb3 Qc7 24. Bxc6+ Kf8 25. Rxb8+ Qxb8 26. Bd5 exf4 27. Rf1 Rb6 28. Bb3 g6 29. Qc4 Rf6 30. Rxf4 Qe5 31. Rxf6 Qxf6 32. Qc8+ Kg7 33. Qc3 Qxc3 34. bxc3 f5 35. Kc2 g5 36. h3 g4 37. hxg4 fxg4 38. Kd3 Kf6 39. Ke2 Kg5 40. Kf1 h4 41. Be6 h3 42. c4 Kh4 0-1