[Event "IBM"]
[Site "Amsterdam"]
[Date "1961.??.??"]
[Round "10"]
[White "Enevoldsen, Jens"]
[Black "Tan, Hiong Liong"]
[Result "1-0"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 b6 5. Bd3 Bb7 6. Nf3 Ne4 7. Qc2 f5 8. O-O Bxc3 9. bxc3 O-O 10. Nd2 Nxd2 11. Bxd2 Qh4 12. f3 Nc6 13. e4 fxe4 14. fxe4 d6 15. Be3 Na5 16. c5 dxc5 17. dxc5 Qh5 18. Rae1 Nc6 19. Bc4 Qe5 20. Rf5 Rxf5 21. exf5 Kh8 22. Bxe6 h6 23. Bf2 Qf6 24. Bd7 Qf7 25. Be6 Qf8 26. Qd3 Re8 27. Qg3 Re7 28. Qg6 Qf6 29. Qxf6 gxf6 30. Bh4 1-0