[Event "IBM"]
[Site "Amsterdam"]
[Date "1973.??.??"]
[Round "11"]
[White "Szabo, Laszlo"]
[Black "Langeweg, Kick"]
[Result "1/2-1/2"]

1. c4 Nf6 2. Nf3 e6 3. g3 d5 4. Bg2 dxc4 5. Qa4+ Nbd7 6. Ne5 c6 7. Nxd7 Bxd7 8. Qxc4 e5 9. O-O Be6 10. Qc3 Bd6 11. d3 O-O 12. Nd2 Nd5 13. Qc2 Nb4 14. Qb1 a5 15. a3 Na6 16. Nc4 Nc5 17. b4 axb4 18. axb4 Rxa1 19. Qxa1 Nb3 20. Qb2 Bxc4 21. dxc4 Nxc1 22. Rxc1 Qc7 23. c5 Be7 24. b5 cxb5 25. Qxb5 Rb8 26. Bd5 g6 27. Kg2 Kg7 28. e4 b6 29. c6 Ra8 30. Rc3 Ra3 31. Bb3 Ra8 32. Rf3 Rf8 33. h4 h5 34. Bd5 Bd6 35. Qa6 Qb8 36. Rb3 Bc7 37. Bc4 Rd8 38. Rf3 Rf8 39. Rd3 Rd8 40. Rd7 Rxd7 41. cxd7 Bd8 42. Qa2 Qd6 43. Bxf7 Qxd7 44. Be6 Qe7 45. Bc4 Qf6 46. Qa8 Qd6 47. Qa4 Kf8 48. Ba2 g5 49. hxg5 Bxg5 50. Qc4 Qf6 51. Qg8+ Ke7 52. Qh7+ Kf8 53. Qxh5 Bd2 54. Qg4 Be1 55. Qc8+ Kg7 56. Qc7+ Kf8 57. Qc2 Bb4 58. Qc8+ Ke7 59. Qc7+ Kf8 60. Qd7 Bc5 61. f3 Bd4 62. Bc4 Bc5 63. Qc8+ Ke7 64. Bd5 Bd4 65. Bc4 Bc5 66. Bb5 Kf7 67. Qe8+ Kg7 68. Bc4 Bf8 69. Qd7+ Be7 70. f4 Qd6 71. Qe8 exf4 72. Qf7+ Kh6 73. gxf4 1/2-1/2