[Event "IBM"]
[Site "Amsterdam"]
[Date "1975.??.??"]
[Round "11"]
[White "Timman, Jan H"]
[Black "Hamann, Svend"]
[Result "1-0"]
1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Be7 8. Qf3 Qc7 9. O-O-O Nbd7 10. Bd3 h6 11. Qh3 Nb6 12. f5 e5 13. Nb3 Bd7 14. Be3 Nc4 15. Bxc4 Qxc4 16. Nd2 Qc6 17. Bg5 Rc8 18. Bxf6 Bxf6 19. Qd3 O-O 20. Kb1 b5 21. Nf1 b4 22. Nd5 Qb7 23. Nxf6+ gxf6 24. Ng3 Ba4 25. b3 Bb5 26. Qd2 Qc6 27. Nh5 d5 28. exd5 Qd6 29. Qxh6 1-0