[Event "USA-ch"]
[Site "Estes Park"]
[Date "1987.??.??"]
[Round "1"]
[White "Wilder, Michael"]
[Black "Kogan, Boris Markovich"]
[Result "1-0"]
[WhiteElo "2505"]
[BlackElo "2460"]

1. d4 Nf6 2. c4 e6 3. Nf3 Bb4+ 4. Nbd2 d5 5. Qa4+ Nc6 6. a3 Be7 7. e3 O-O 8. Qc2 a5 9. b3 Bd7 10. Bb2 Na7 11. Bd3 h6 12. Rg1 c5 13. dxc5 Bxc5 14. g4 dxc4 15. Bxc4 Rc8 16. g5 hxg5 17. Nxg5 Re8 18. Nxf7 Qe7 19. Ne4 Kxf7 20. Nxf6 1-0