[Event "IBM"]
[Site "Amsterdam"]
[Date "1972.??.??"]
[Round "?"]
[White "Ljubojevic, Ljubomir"]
[Black "Hartoch, Robert G"]
[Result "1-0"]

1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. f4 Nf6 5. Bc4 d5 6. exd5 Nbd7 7. Nf3 O-O 8. O-O Nb6 9. Bb3 a5 10. a3 Nbxd5 11. Nxd5 Nxd5 12. Ne5 c6 13. c4 Nc7 14. Be3 Be6 15. Rc1 f6 16. Nd3 Bf7 17. f5 g5 18. Qf3 Re8 19. Rfd1 Qc8 20. d5 a4 21. Ba2 Na6 22. Bb1 Qd7 23. Nc5 Nxc5 24. Bxc5 cxd5 25. cxd5 Rac8 26. Be4 h5 27. h3 Bf8 28. Bb4 Rxc1 29. Rxc1 Rc8 30. Rxc8 Qxc8 31. Qc3 Qd7 32. d6 exd6 33. Qxf6 Qe7 34. Qxe7 Bxe7 35. Bxb7 Bb3 36. Kf2 Kf7 37. g4 hxg4 38. hxg4 Bd8 39. Bf3 Bf6 40. Bc3 Bxc3 41. bxc3 Kf6 42. Ke1 Bf7 43. Bc6 Bb3 44. Kd2 Ke5 45. Bd7 Kf6 46. Be8 Ke5 47. Bb5 Kf4 48. f6 Ke5 49. Bxa4 Bd5 50. Bc6 Be6 51. a4 Kxf6 52. a5 Bc8 53. Kd3 Ke7 54. Kc4 Bxg4 55. Kb5 Bc8 56. a6 Bxa6+ 57. Kxa6 d5 58. Bxd5 Kd6 59. c4 Kc5 60. Ka5 1-0