[Event "IBM"]
[Site "Amsterdam"]
[Date "1962.08.18"]
[Round "5"]
[White "Rellstab, Ludwig Sr"]
[Black "Donner, Jan Hein"]
[Result "0-1"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. f4 e5 7. Nf3 Nbd7 8. Bd3 g6 9. O-O Bg7 10. fxe5 dxe5 11. Kh1 O-O 12. Qe1 b5 13. Bg5 h6 14. Bd2 Bb7 15. Qh4 b4 16. Ne2 Nxe4 17. Bxb4 Qxh4 18. Nxh4 Rfc8 19. Rad1 Nef6 20. Nc3 Nb6 21. Rde1 e4 22. Nxe4 Bxe4 23. Rxe4 Nxe4 24. Bxe4 Rc4 25. Bxa8 Rxb4 0-1