[Event "USA-ch"]
[Site "Estes Park"]
[Date "1987.??.??"]
[Round "6"]
[White "Kogan, Boris Markovich"]
[Black "Gulko, Boris F"]
[Result "0-1"]
[WhiteElo "2460"]
[BlackElo "2565"]

1. Nf3 g6 2. d4 Nf6 3. g3 c5 4. dxc5 Qa5+ 5. Nc3 Bg7 6. Nd2 Qxc5 7. Bg2 d6 8. Nb3 Qc7 9. Bg5 Nbd7 10. e4 h6 11. Bf4 Nb6 12. O-O Nc4 13. Qe2 a6 14. Nd1 Bg4 15. f3 Bd7 16. c3 Rc8 17. Re1 O-O 18. Bc1 e5 19. Ne3 Nb6 20. Bd2 Be6 21. Rad1 d5 22. exd5 Nbxd5 23. Nxd5 Nxd5 24. Qf2 Rfd8 25. Bc1 b5 26. Bf1 Kh7 27. Kh1 Rd6 28. Nd2 f5 29. a3 Rcd8 30. Be2 Bf8 31. Nf1 R6d7 32. Qg2 Nb6 33. Rxd7+ Rxd7 34. Rd1 Bb3 35. Rxd7+ Qxd7 36. Qf2 Nc4 37. Qe1 Nb6 38. Nd2 Bd5 39. Qd1 Qc6 40. Nf1 Bc5 41. Ne3 Be6 42. Kg2 Nd5 43. Nxd5 Bxd5 44. h4 e4 45. Bf4 Qe6 46. Kh2 Kg7 47. Kg2 exf3+ 48. Bxf3 Bxf3+ 49. Qxf3 Qe4 50. g4 h5 51. gxh5 gxh5 52. Kg3 Qxf3+ 53. Kxf3 Kf6 54. Ke2 Ke6 55. Kd3 Be7 56. Bg3 Kd5 57. Be1 a5 58. b3 a4 59. b4 f4 60. Bf2 Bd8 0-1