[Event "IBM"]
[Site "Amsterdam"]
[Date "1961.??.??"]
[Round "8"]
[White "Langeweg, Kick"]
[Black "Kuijpers, Frans"]
[Result "1-0"]

1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. d4 Nbd7 5. cxd5 exd5 6. Bg5 h6 7. Bh4 Be7 8. e3 c6 9. Bd3 O-O 10. Qc2 Re8 11. O-O Ne4 12. Bxe4 Bxh4 13. Bh7+ Kh8 14. Bd3 Bf6 15. b4 Nb6 16. b5 cxb5 17. Bxb5 Bd7 18. Qb3 Bxb5 19. Qxb5 Re6 20. Rfc1 Rc8 21. Na4 Rec6 22. Nc5 Qc7 23. g3 Qe7 24. Rab1 R8c7 25. Re1 Nc4 26. Qa4 b6 27. Na6 Rc8 28. Nb4 Rd6 29. Rec1 Qb7 30. Qa6 Qxa6 31. Nxa6 b5 32. Nc5 a6 33. a4 bxa4 34. Nxa4 Rdc6 35. Ne1 Be7 36. Nd3 Ba3 37. Rc2 R6c7 38. Nf4 Rd7 39. Rb3 Be7 40. Nxd5 Rxd5 41. Rbc3 1-0