[Event "World op 18th"]
[Site "Philadelphia"]
[Date "1990.??.??"]
[Round "4"]
[White "Smith,"]
[Black "Pettersson, Lars Erik"]
[Result "1/2-1/2"]
[EventArchiveKey "world-open-1990"]
[BlackElo "2325"]

1. c4 e5 2. g3 Nc6 3. Bg2 Nf6 4. e3 d5 5. cxd5 Nxd5 6. a3 Be6 7. Ne2 Qd7 8. d4 O-O-O 9. O-O Nde7 10. Nbc3 exd4 11. exd4 Nxd4 12. Nxd4 Qxd4 13. Qf3 Nc6 14. Be3 Qg4 15. Qxg4 Bxg4 16. Bxc6 bxc6 17. Bxa7 c5 18. Na4 c4 19. Be3 Be7 20. Nc3 Bf6 21. Rfe1 Be6 22. Rac1 g5 23. Na4 Bd5 24. Nc3 1/2-1/2