[Event "USA-ch/Zonal"]
[Site "South Bend"]
[Date "1981.07.10"]
[Round "1"]
[White "Kogan, Boris Markovich"]
[Black "Browne, Walter Shawn"]
[Result "1/2-1/2"]
[BlackElo "2555"]

1. Nf3 Nf6 2. g3 b5 3. Bg2 Bb7 4. O-O e6 5. d3 c5 6. e4 d6 7. a4 b4 8. e5 dxe5 9. Nxe5 Bxg2 10. Kxg2 Nbd7 11. Nxd7 Nxd7 12. b3 Bd6 13. Bb2 Be5 14. Bxe5 Nxe5 15. Nd2 Qd5+ 16. Kg1 O-O 17. f4 Nc6 18. Nf3 Rac8 19. Rf2 1/2-1/2