[Event "World op 19th"]
[Site "Philadelphia"]
[Date "1991.??.??"]
[Round "1"]
[White "Lein, Anatoly"]
[Black "Regan, Natasha"]
[Result "1-0"]
[WhiteElo "2485"]
[BlackElo "2195"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6 5. f4 dxe5 6. fxe5 Nc6 7. Be3 Bf5 8. Nc3 e6 9. Nf3 Bg4 10. Qd2 Bb4 11. a3 Be7 12. Ne4 Bxf3 13. gxf3 Bh4+ 14. Ng3 Qe7 15. O-O-O O-O-O 16. Qc3 f6 17. Bh3 Kb8 18. f4 fxe5 19. dxe5 g5 20. Ne2 Nd7 21. Nd4 Nxd4 22. Qxd4 b6 23. Qe4 Nc5 24. Bxc5 Qxc5 25. Bg2 Rd5 26. Kb1 Rxd1+ 27. Rxd1 c6 28. b4 1-0