[Event "IBM"]
[Site "Amsterdam"]
[Date "1975.??.??"]
[Round "3"]
[White "Bohm, Hans"]
[Black "Hamann, Svend"]
[Result "1/2-1/2"]

1. d4 Nf6 2. Nf3 e6 3. Bg5 d5 4. e3 h6 5. Bh4 g5 6. Bg3 Ne4 7. Nfd2 Nxg3 8. hxg3 Bg7 9. c3 Nd7 10. Bd3 c5 11. O-O Qb6 12. Qa4 Qxb2 13. Nb3 c4 14. Rd1 b5 15. Qa5 cxb3 16. axb3 b4 17. Qa4 O-O 18. Ra2 Nb6 19. Rxb2 Nxa4 20. bxa4 Bd7 21. Bb5 Bxb5 22. axb5 bxc3 23. Nxc3 Rfc8 1/2-1/2