[Event "Amsterdam IBM"]
[Site "Amsterdam NED"]
[Date "1961.05.30"]
[EventDate "1961.05.25"]
[Round "5"]
[Result "1/2-1/2"]
[White "H Crabbendam"]
[Black "Jan Hein Donner"]
[ECO "B41"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "42"]

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6 5. Be3 Nf6 6. Nd2 e5 7. N4b3 d5 8.  exd5 Nxd5 9. Qh5 Nc6 10. Bc4 b5 11. Bb6 Qd7 12. Nc5 Bxc5 13. Bxc5 bxc4 14. Nxc4  Nf4 15. Qf3 Qd5 16. Nd6+ Kd7 17. Qxd5 Nxd5 18. Nxf7 Re8 19. O-O-O Ke6 20. Ng5+  Kf5 21. Nf7 1/2-1/2