Markzon, Gregory vs Olson, David L
World Open Philadelphia, PA USA · Round 5 · 1995.??.?? · 1-0 · C77 Ruy Lopez: Morphy Defense, Wormald Attack
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PGN
[Event "World Open Philadelphia, PA USA"] [Site "World op Philadelphia, PA USA"] [Date "1995.??.??"] [Round "5"] [White "Markzon, Gregory"] [Black "Olson, David L"] [Result "1-0"] [PlyCount "79"] [WhiteElo "2280"] [WhiteFideId "2003694"] [WhiteTitle "FM"] [BlackElo "2185"] [BlackFideId "2010933"] [ECO "C77t"] [Source "Codekiddy"] [SourceQuality "3"] [ImportDate "2026-01-06"] 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Qe2 b5 6. Bb3 Bc5 7. c3 O-O 8. O-O d6 9. d3 Bg4 10. h3 Bh5 11. Rd1 h6 12. Nbd2 Ba7 13. Nf1 Na5 14. Bc2 c5 15. g4 Nxg4 16. hxg4 Bxg4 17. N1h2 Bh5 18. Kh1 f5 19. Rg1 f4 20. Qf1 Nc6 21. Qh3 Qe8 22. Rg2 Bb6 23. Nh4 Ra7 24. Bd2 Bd8 25. Nf5 Rf6 26. Bd1 Bxd1 27. Rxd1 Qe6 28. Rdg1 g5 29. Ng4 Rg6 30. Ngxh6+ Kf8 31. Ng4 Bf6 32. Rh2 Ne7 33. Nxf6 Qxf6 34. Nxe7 Kxe7 35. Qc8 Qg7 36. f3 Rh6 37. Rg2 Rg6 38. Rh8 Rd7 39. Rgh2 Kf6 40. Be1 1-0