[Event "IBM"]
[Site "Amsterdam"]
[Date "1965.??.??"]
[Round "3"]
[White "Langeweg, Kick"]
[Black "Zuidema, Coen"]
[Result "1-0"]

1. Nf3 Nf6 2. g3 g6 3. Bg2 Bg7 4. O-O O-O 5. c4 d5 6. cxd5 Nxd5 7. d4 c5 8. dxc5 Na6 9. Ng5 Ndb4 10. Nc3 h6 11. Nf3 Be6 12. Bf4 Qxd1 13. Rfxd1 Nxc5 14. Be5 Rfd8 15. Bxg7 Kxg7 16. Nd4 Rxd4 17. Rxd4 Nc2 18. Rad1 Nxd4 19. Rxd4 Rc8 20. f4 b6 21. Kf2 h5 22. Bf1 Rh8 23. h4 Bc8 24. e4 e5 25. fxe5 Re8 26. b4 Nd7 27. Bb5 Re7 28. Rc4 Re8 29. Rc7 Rd8 30. Bxd7 Bxd7 31. Rxa7 Be6 32. Nd5 b5 33. Nf4 Re8 34. Ke3 1-0