[Event "IBM"]
[Site "Amsterdam"]
[Date "1968.??.??"]
[Round "13"]
[White "Bilek, Istvan"]
[Black "Langeweg, Kick"]
[Result "0-1"]

1. g3 d5 2. Bg2 g6 3. f4 Bg7 4. Nf3 c5 5. O-O Nc6 6. d3 d4 7. c4 Nh6 8. Na3 Nf5 9. Nc2 O-O 10. Qe1 a5 11. a3 a4 12. Rb1 Ra6 13. Nd2 Bd7 14. Ne4 b6 15. h3 Nd6 16. Nxd6 exd6 17. Kh2 Na5 18. b4 axb3 19. Na1 Be6 20. g4 f5 21. gxf5 Rxf5 22. Nxb3 Nxb3 23. Rxb3 d5 24. e4 dxe3 25. Qxe3 Qd7 26. cxd5 Bxd5 27. Bxd5+ Rxd5 28. Re1 Kf7 29. Re2 b5 30. Qf3 Rad6 31. Re3 Rf5 32. Re4 h6 33. Kg2 Rfd5 34. Re3 Kg8 35. Qe2 Bf6 36. Qg4 Qf7 37. Rxb5 Rxd3 38. Rxd3 Rxd3 39. Qc8+ Kh7 40. Rb7 Be7 41. Qxc5 Qa2+ 0-1