[Event "IBM"]
[Site "Amsterdam"]
[Date "1967.??.??"]
[Round "4"]
[White "Langeweg, Kick"]
[Black "Ciric, Dragoljub M"]
[Result "1/2-1/2"]

1. c4 e6 2. Nf3 d5 3. d4 c6 4. Qc2 Nf6 5. cxd5 exd5 6. Bg5 Be7 7. Nc3 g6 8. e3 Bf5 9. Bd3 Bxd3 10. Qxd3 Nbd7 11. O-O O-O 12. h3 Re8 13. Bxf6 Nxf6 14. Nd2 Bd6 15. Rfe1 Re6 16. e4 dxe4 17. Ndxe4 Nxe4 18. Rxe4 Qd7 19. Rae1 Rxe4 20. Qxe4 Bf8 21. d5 c5 22. a4 Rd8 23. Qc4 b6 24. Qb5 Qc7 25. Re8 a6 26. Qe2 Rxe8 27. Qxe8 Qe7 28. Qxe7 Bxe7 29. a5 bxa5 30. b3 Kf8 31. Kf1 Bf6 32. Ne4 Ke7 33. d6+ Ke6 34. d7 Be7 35. Nxc5+ Kd6 36. Nb7+ Kxd7 37. Nxa5 Kd6 38. Ke2 Kc5 39. Kd3 Bh4 40. g3 Bf6 41. Nc4 1/2-1/2