[Event "World op 18th"]
[Site "Philadelphia"]
[Date "1990.??.??"]
[Round "9"]
[White "Wolff, Patrick G"]
[Black "Assem, Magdy"]
[Result "1/2-1/2"]
[EventArchiveKey "world-open-1990"]
[WhiteElo "2500"]
[BlackElo "2295"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nd4 4. Nxd4 exd4 5. O-O Bc5 6. c4 c6 7. Ba4 Ne7 8. d3 O-O 9. Nd2 d6 10. Rb1 a5 11. a3 Bb6 12. b4 axb4 13. axb4 f5 14. Bb3 Kh8 15. exf5 Bxf5 16. Ne4 d5 17. Ng3 dxc4 18. Bxc4 Nd5 19. Nxf5 Rxf5 20. Qg4 Qf6 21. Bxd5 Rxd5 22. Bd2 Qf5 23. Qxf5 Rxf5 24. Ra1 Rff8 25. Rfe1 Kg8 1/2-1/2