[Event "IBM"]
[Site "Amsterdam"]
[Date "1968.??.??"]
[Round "12"]
[White "Kuijpers, Frans"]
[Black "Bilek, Istvan"]
[Result "1/2-1/2"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. Be3 Bg7 7. Be2 O-O 8. O-O Nbd7 9. Nb3 b6 10. f3 Bb7 11. Qd2 Rc8 12. a4 a6 13. Rfd1 Ne5 14. Bd4 Nc6 15. Bf2 Nd7 16. Nd5 Bxb2 17. Rab1 Bg7 18. Nc1 Ncb8 19. Nxb6 Nxb6 20. Bxb6 Qd7 21. a5 Qc6 22. Bd4 Bxd4+ 23. Qxd4 Nd7 24. Bd3 Rc7 25. Ne2 1/2-1/2