[Event "IBM"]
[Site "Amsterdam"]
[Date "1968.??.??"]
[Round "6"]
[White "Ciric, Dragoljub M"]
[Black "Lengyel, Levente"]
[Result "0-1"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3 Na5 10. Bc2 c5 11. d4 Nd7 12. Nbd2 cxd4 13. cxd4 Nc6 14. d5 Nb4 15. Bb1 a5 16. Nf1 Nc5 17. Ng3 g6 18. Bh6 Re8 19. Qd2 Bf8 20. Bg5 Be7 21. Be3 Bf8 22. Nh2 Bg7 23. Ng4 Rf8 24. Bg5 f6 25. Nh6+ Kh8 26. Be3 Bd7 27. Rc1 Qe7 28. h4 Rfc8 29. f3 Rc7 30. Ne2 Rac8 31. g4 Be8 32. Kg2 Na4 33. a3 Na6 34. Qxa5 N6c5 35. Qb4 Nb6 36. b3 Qf8 37. g5 f5 38. Rd1 Bxh6 39. exf5 gxf5 40. gxh6 Nxd5 41. Rxd5 Qg8+ 42. Bg5 Qxd5 43. Bxf5 Bh5 44. Rf1 Rf8 45. Ng3 Rcf7 46. Nxh5 Rxf5 47. Qg4 Ne6 48. Ng3 R5f7 49. Ne4 Nxg5 50. hxg5 Rg8 51. Rf2 Qxb3 52. Nxd6 Rf4 53. Qg3 Rd8 54. Ne4 Qxa3 55. g6 hxg6 56. Ng5 Qe7 57. Re2 Rdf8 58. Kh2 b4 59. Nh3 Qh4 60. Rxe5 Qxg3+ 61. Kxg3 Rxf3+ 62. Kg4 R3f5 63. Re4 Rb8 64. Nf4 Kh7 65. Re6 Rxf4+ 0-1