[Event "USA-ch"]
[Site "Estes Park"]
[Date "1986.??.??"]
[Round "?"]
[White "Kogan, Boris Markovich"]
[Black "Christiansen, Larry Mark"]
[Result "1-0"]
[WhiteElo "2465"]
[BlackElo "2560"]
1. Nf3 c5 2. c4 Nc6 3. Nc3 g6 4. e3 Bg7 5. d4 Nf6 6. d5 Nb4 7. e4 O-O 8. a3 Na6 9. Bd3 d6 10. O-O e6 11. Nd2 Re8 12. h3 Nc7 13. a4 Na6 14. Bb1 Nb4 15. f4 exd5 16. exd5 Ng4 17. Nf3 Ne3 18. Bxe3 Rxe3 19. Qd2 Qe7 20. Kf2 Rxf3+ 21. Kxf3 Bd7 22. Kg3 Re8 23. Kh2 Bd4 24. Be4 f5 25. Bc2 Be3 26. Qd1 Qf6 27. Bb3 h5 28. a5 Re7 29. Rf3 Be8 30. Qf1 g5 31. fxg5 Qe5+ 32. Kh1 f4 33. g3 fxg3 34. Rf8+ Kh7 35. Rxe8 Rxe8 36. Qf7+ Kh8 37. g6 1-0