[Event "IBM"]
[Site "Amsterdam"]
[Date "1973.??.??"]
[Round "9"]
[White "Spassky, Boris Vasilievich"]
[Black "Donner, Jan Hein"]
[Result "0-1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Bg5 e6 7. f4 Nbd7 8. Qf3 Qc7 9. O-O-O b5 10. Bd3 Bb7 11. Rhe1 h6 12. Qh3 O-O-O 13. f5 e5 14. Ne6 hxg5 15. Qxh8 fxe6 16. fxe6 Nc5 17. Qh3 g4 18. Qg3 Qe7 19. b4 Nxd3+ 20. Qxd3 Qxe6 21. a4 bxa4 22. Nd5 Kb8 23. Kb2 Nxd5 24. exd5 Qd7 25. c4 Be7 26. Ka3 Rf8 27. Rf1 Rxf1 28. Rxf1 Bf6 29. Rb1 Bc8 30. b5 axb5 31. Rxb5+ Kc7 32. Qd2 Kd8 33. Rb6 Qc7 34. Rc6 Qb8 35. Qa5+ Ke7 0-1