[Event "Katowice Open"]
[Site "Katowice POL"]
[Date "1990.01.31"]
[EventDate "?"]
[Round "5"]
[Result "1/2-1/2"]
[White "Andrei Kovalev"]
[Black "Boguslaw Sygulski"]
[ECO "C92"]
[WhiteElo "2500"]
[BlackElo "2355"]
[PlyCount "166"]

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 Be6 10. d4 Bxb3 11. axb3 exd4 12. cxd4 d5 13. e5 Ne4 14. Nc3 f5 15.  exf6 Bxf6 16. Nxe4 dxe4 17. Rxe4 Qd5 18. Rf4 Ne5 19. Nxe5 Bxe5 20. Rxf8+ Rxf8  21. Be3 Rd8 22. Qg4 Bf6 23. Rxa6 Bxd4 24. Bxd4 Qxd4 25. Ra8 Qd6 26. Rxd8+ Qxd8  27. Qe6+ Kh8 28. Qc6 Qd1+ 29. Kh2 Qxb3 30. Qe8+ Qg8 31. Qxb5 h6 32. Qe5 Qb3 33.  f3 Qf7 34. b4 Qd7 35. b5 Kg8 36. h4 Qd8 37. Qe6+ Kh8 38. Kh3 Kh7 39. g3 Kh8 40.  h5 Kh7 41. g4 Kh8 42. Kg3 Qb8 43. Qe5 Qd8 44. Kf4 Qd2+ 45. Ke4 Qe2+ 46. Kd4  Qb2+ 47. Ke4 Qe2+ 48. Kf4 Qd2+ 49. Kg3 Qd7 50. Qc5 Qd8 51. Qc6 Kg8 52. Kf4 Kh7  53. Kf5 Qe7 54. f4 Qe2 55. Qd5 Qe8 56. Qe5 Qf7+ 57. Ke4 Qc4+ 58. Ke3 Qb3+ 59.  Kf2 Qc2+ 60. Kg3 c6 61. bxc6 Qxc6 62. g5 hxg5 63. fxg5 Qh1 64. Qe2 Qd5 65. Qe3  Kh8 66. Qe8+ Kh7 67. Qg6+ Kh8 68. Qe8+ Kh7 69. Qe3 Kh8 70. Kh2 Qd7 71. Qf4 Qd1  72. Qf8+ Kh7 73. Qf5+ Kh8 74. g6 Qe2+ 75. Kg3 Qe3+ 76. Kg4 Qg1+ 77. Kf4 Qf2+  78. Ke4 Qc2+ 79. Ke5 Qc5+ 80. Kf4 Qf2+ 81. Kg4 Qg2+ 82. Kh4 Qh2+ 83. Kg4  1/2-1/2