[Event "IBM"]
[Site "Amsterdam"]
[Date "1962.08.25"]
[Round "9"]
[White "Langeweg, Kick"]
[Black "Donner, Jan Hein"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Bd3 g6 6. O-O Bg7 7. Ne2 Ne7 8. c4 d5 9. cxd5 exd5 10. exd5 Qxd5 11. Nbc3 Qd8 12. Bg5 O-O 13. Bxa6 Nxa6 14. Qxd8 Rxd8 15. Bxe7 Re8 16. Bd6 Be6 17. Rfd1 Red8 18. f3 Rd7 19. Bf4 Rxd1+ 20. Rxd1 Nb4 21. b3 Nxa2 22. Nd5 1/2-1/2