[Event "IBM"]
[Site "Amsterdam"]
[Date "1963.??.??"]
[Round "4"]
[White "Udovcic, Mijo"]
[Black "Kuijpers, Frans"]
[Result "1-0"]

1. d4 Nf6 2. c4 g6 3. Nf3 Bg7 4. g3 O-O 5. Bg2 d6 6. O-O Nc6 7. Nc3 a6 8. d5 Na5 9. Nd2 c5 10. Qc2 Rb8 11. b3 b5 12. Bb2 Bh6 13. e3 Nd7 14. Nd1 f6 15. Rb1 Nb6 16. Bc3 Nb7 17. f4 Qe8 18. Nf2 e5 19. dxe6 Bxe6 20. Qd3 Bf5 21. e4 Be6 22. Nd1 Bg7 23. Ne3 Kh8 24. Rbe1 Qd7 25. f5 Bg8 26. Nd5 Nxd5 27. exd5 g5 28. Ne4 b4 29. Ba1 h6 30. g4 Rbe8 31. Qg3 Qd8 32. h4 Rf7 33. Bf3 Kh7 34. Rf2 gxh4 35. Qxh4 Ref8 36. Rh2 Rd7 37. g5 fxg5 38. Nxg5+ Kh8 39. Qxh6+ 1-0