[Event "IBM"]
[Site "Amsterdam"]
[Date "1962.08.22"]
[Round "7"]
[White "Henneberke, Frans"]
[Black "Dunkelblum, Arthur"]
[Result "1-0"]

1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c5 5. e3 Nc6 6. a3 cxd4 7. exd4 Be7 8. Bg5 dxc4 9. Bxc4 O-O 10. O-O b6 11. Qd3 Bb7 12. Rad1 Re8 13. Rfe1 Nd7 14. d5 Nc5 15. Qc2 exd5 16. Nxd5 Bxg5 17. Rxe8+ Qxe8 18. Nxg5 Ne4 19. Nxe4 1-0