[Event "IBM"]
[Site "Amsterdam"]
[Date "1961.??.??"]
[Round "3"]
[White "Johner, Hans"]
[Black "Tan, Hiong Liong"]
[Result "1/2-1/2"]

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 e5 15. d5 Ne7 16. c5 bxc5 17. d6 cxd6 18. Qb3+ c4 19. Bxc4+ d5 20. Qxb7 dxc4 21. Qxd7 Rfe8 22. Qe6+ Kh8 23. Qxc4 Ng8 24. Rae1 Nf6 25. Rf3 Rad8 26. Rh3 Qg4 27. Rd3 Rxd3 28. Qxd3 Qe6 29. Qc2 h6 30. Qa4 1/2-1/2