[Event "IBM"]
[Site "Amsterdam"]
[Date "1962.08.15"]
[Round "2"]
[White "Donner, Jan Hein"]
[Black "Kool, Gerard J"]
[Result "1-0"]
1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Bg5 h6 5. Bh4 c5 6. d5 exd5 7. cxd5 d6 8. e3 Bf5 9. f3 Nbd7 10. e4 Bh7 11. Bd3 a6 12. Ne2 Qc7 13. O-O Bxc3 14. bxc3 b5 15. a4 Rb8 16. axb5 axb5 17. Ra6 Rb6 18. Rxb6 Qxb6 19. Qb1 b4 20. cxb4 Nxd5 21. bxc5 Qxb1 22. Bxb1 Ne3 23. Rc1 Ne5 24. Bf2 N5c4 25. Bxe3 Nxe3 26. Kf2 1-0