[Event "IBM"]
[Site "Amsterdam"]
[Date "1961.??.??"]
[Round "4"]
[White "Tan, Hiong Liong"]
[Black "Crabbendam, Henrico"]
[Result "0-1"]

1. e4 c5 2. Nf3 Nf6 3. d3 d6 4. g3 g6 5. Bg2 Bg7 6. O-O Nc6 7. Nbd2 Rb8 8. Nh4 e5 9. f4 exf4 10. Nc4 fxg3 11. Bf4 gxh2+ 12. Kh1 O-O 13. Bxd6 Nh5 14. Qe1 b5 15. Bxf8 Qxf8 16. Bf3 bxc4 17. Bxh5 gxh5 18. Rb1 cxd3 19. cxd3 Qd6 20. b3 Bg4 21. Qf2 Qxd3 22. Qxf7+ Kh8 23. Qd5 Nd4 24. Qd6 Qxe4+ 25. Ng2 Rg8 26. Rbe1 Qa8 27. Rf2 Nf3 28. Rd1 Bd4 29. Rc2 Bh3 0-1