[Event "IBM"]
[Site "Amsterdam"]
[Date "1961.??.??"]
[Round "5"]
[White "Kuijpers, Frans"]
[Black "Tan, Hiong Liong"]
[Result "1-0"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3+ 5. bxc3 d6 6. f3 c5 7. e4 Nc6 8. Be3 Qa5 9. Qd2 cxd4 10. cxd4 Qxd2+ 11. Kxd2 e5 12. Ne2 Na5 13. Nc1 Nd7 14. Rb1 Nb6 15. Kc3 exd4+ 16. Bxd4 Na4+ 17. Kd2 O-O 18. Nb3 Nc6 19. Bf2 f5 20. Bg3 fxe4 21. fxe4 Be6 22. Bd3 Rfd8 23. Rhc1 Rac8 24. Ke3 Ne5 25. Nd4 Bxc4 26. Bc2 Nb6 27. Nf5 Rc5 28. Rd1 Ba2 29. Rbc1 Nf7 30. Kf2 Kh8 31. Nxd6 Nxd6 32. Bxd6 Rc6 33. Bf4 Rxc2+ 34. Rxc2 Rxd1 35. Rxa2 Rd4 36. Kf3 Ra4 37. Bd6 Kg8 38. Bc5 Nd7 39. Bd6 Kf7 40. Rd2 Ke6 41. Rd3 Nf6 42. Bf8 Kf7 43. Bb4 a5 44. Be1 g5 45. Rb3 g4+ 46. Ke2 Rxe4+ 47. Kf1 a4 48. Rxb7+ Ke6 49. Ra7 Nd5 50. Bd2 h5 51. Kf2 Kd6 52. h3 gxh3 53. gxh3 Nf4 54. Kf3 Ke5 55. Re7+ 1-0