[Event "USA-ch"]
[Site "Estes Park"]
[Date "1986.??.??"]
[Round "?"]
[White "De Firmian, Nick E"]
[Black "Kogan, Boris Markovich"]
[Result "0-1"]
[WhiteElo "2490"]
[BlackElo "2465"]

1. e4 e5 2. Nf3 Nf6 3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Bd6 7. O-O O-O 8. c4 c6 9. Qc2 Na6 10. a3 f5 11. c5 Be7 12. Ne5 Nc7 13. f3 Ne6 14. Be3 Bg5 15. f4 Bh6 16. Nc3 Bd7 17. b4 Be8 18. g4 g6 19. g5 Bg7 20. Ne2 Rc8 21. Qa4 a6 22. Rad1 Rc7 23. Qb3 h6 24. h4 hxg5 25. hxg5 N4xg5 26. fxg5 Bxe5 27. dxe5 f4 28. Bc1 Qxg5+ 29. Kf2 Qh4+ 30. Kg2 f3+ 31. Rxf3 Rxf3 32. Kxf3 Rf7+ 0-1