[Event "IBM"]
[Site "Amsterdam"]
[Date "1974.08.03"]
[Round "15"]
[White "Donner, Jan Hein"]
[Black "Jansa, Vlastimil"]
[Result "0-1"]

1. d4 Nf6 2. c4 g6 3. g3 Bg7 4. Bg2 O-O 5. Nc3 d6 6. Nf3 c6 7. O-O Qa5 8. Nd2 Qh5 9. e4 Qxd1 10. Rxd1 Nfd7 11. Nf3 a6 12. Bg5 Re8 13. Rac1 b5 14. b3 Nb6 15. a4 b4 16. Ne2 a5 17. Be3 N6d7 18. Ne1 e5 19. dxe5 dxe5 20. Bh3 Nf8 21. Bxc8 Rxc8 22. Rc2 Ne6 23. Bb6 c5 0-1