[Event "USA-ch/Zonal"]
[Site "South Bend"]
[Date "1981.??.??"]
[Round "11"]
[White "Kogan, Boris Markovich"]
[Black "Seirawan, Yasser"]
[Result "0-1"]
[BlackElo "2555"]

1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. Qc2 c5 5. dxc5 O-O 6. Nf3 Na6 7. a3 Bxc3+ 8. Qxc3 Nxc5 9. e3 a5 10. b3 b6 11. Be2 Ba6 12. O-O d5 13. Nd2 Rc8 14. f3 dxc4 15. bxc4 Nd5 16. Qd4 Ne7 17. Qc3 Qc7 18. Bb2 f6 19. Rfc1 Rfd8 20. Rab1 Nd5 21. cxd5 Bxe2 22. Ne4 Rxd5 23. Nxf6+ gxf6 24. Qxf6 Rf5 25. Qh8+ Kf7 26. Qxh7+ Ke8 27. Qh6 Bd3 28. Ra1 Qe7 29. Qg6+ Qf7 30. Qg3 Kd7 31. Bd4 Rg8 32. Qe1 Rxg2+ 33. Kxg2 Rg5+ 34. Qg3 Rxg3+ 35. hxg3 Nb3 36. Rc3 Nxa1 37. Rxd3 Nc2 38. Bxb6+ Kc6 39. Bxa5 Kb5 40. Bb4 e5 41. e4 Nd4 42. g4 Ka4 43. Be1 Qc4 44. Rc3 Qe2+ 45. Bf2 Ne6 0-1