[Event "IBM"]
[Site "Amsterdam"]
[Date "1967.??.??"]
[Round "5"]
[White "Enevoldsen, Jens"]
[Black "Zuidema, Coen"]
[Result "1/2-1/2"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Nc3 b5 7. Bb3 d6 8. a4 b4 9. Nd5 O-O 10. d3 Rb8 11. a5 Nxd5 12. Bxd5 Nxa5 13. Bd2 c6 14. Ba2 c5 15. Bd5 Qc7 16. Be3 Nc6 17. Nd2 Ra8 18. f4 exf4 19. Bxf4 a5 20. Nc4 Be6 21. Bxe6 fxe6 22. Qg4 e5 23. Bh6 Bf6 24. Nb6 Ra7 25. Nd5 Qd7 26. Qh5 Be7 27. Be3 Qe6 28. b3 Rxf1+ 29. Rxf1 Bf8 30. Qf3 Rf7 31. Qxf7+ Qxf7 32. Rxf7 Kxf7 33. Kf2 Be7 34. Ke2 Bd8 35. Bf2 Ke6 36. Kf3 Na7 37. Ke2 Nb5 38. Be3 Kd7 39. Kd1 Kc6 40. Ke2 Na3 41. Kd2 Nb5 42. Kd1 Na7 43. Kc1 Kb5 44. Kb2 a4 45. c4+ Ka5 46. Nxb4 a3+ 47. Ka2 cxb4 48. Bxa7 Bb6 49. Bb8 Bc5 50. Bc7+ Ka6 51. Bd8 h5 52. h3 Kb7 53. Bg5 Ka6 1/2-1/2