[Event "IBM"]
[Site "Amsterdam"]
[Date "1971.07.17"]
[Round "5"]
[White "Timman, Jan H"]
[Black "Keres, Paul"]
[Result "0-1"]
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. e3 c5 5. Nf3 b6 6. Be2 Bb7 7. O-O O-O 8. Na4 Qe7 9. a3
Ba5 10. dxc5 bxc5 11. Nxc5 Qxc5 12. b4 Qc7 13. bxa5 Ng4 14. g3 Nc6 15. Bd2 Nxa5 16. Ng5
Nf6 17. Bb4 Rfc8 18. Bh5 Nxc4 19. Bxf7+ Kh8 20. Qd4 h6 21. f4 hxg5 22. fxg5 Qc6 23. Ra2
Ne5 24. gxf6 Qh1+ 25. Kf2 Qg2+ 0-1