Root, Douglas vs Mallela, Abhishek
66. OCF Oklahoma Open · Round 4.1 · 2011.07.10 · 1/2-1/2 · D04 Queen's Pawn Game: Colle System
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PGN
[Event "66. OCF Oklahoma Open"] [Site "Oklahoma City, OK USA"] [Date "2011.07.10"] [Round "4.1"] [White "Root, Douglas"] [Black "Mallela, Abhishek"] [Result "1/2-1/2"] [PlyCount "99"] [WhiteElo "2470"] [WhiteFideId "2000490"] [WhiteTitle "IM"] [BlackElo "2085"] [BlackFideId "2039710"] [ECO "D04i"] [Source "PGNMentor"] [SourceQuality "1"] [ImportDate "2026-01-06"] 1. d4 d5 2. Nf3 Nf6 3. e3 c5 4. c3 Nc6 5. dxc5 a5 6. Bb5 Bd7 7. a4 e6 8. b4 axb4 9. Bxc6 Bxc6 10. cxb4 b6 11. Nd4 Bb7 12. c6 Bxb4+ 13. Bd2 Bxd2+ 14. Qxd2 Ba6 15. Qb4 Qe7 16. Qxe7+ Kxe7 17. Nc3 Ne4 18. Nxe4 dxe4 19. Rb1 Bd3 20. Rxb6 Rxa4 21. Kd2 e5 22. Nf5+ Ke6 23. Nxg7+ Kf6 24. Nh5+ Kg5 25. Ng3 Ra2+ 26. Kc3 Rc2+ 27. Kb3 Rc8 28. f3 exf3 29. gxf3 R8xc6 30. h4+ Kf6 31. Rxc6+ Rxc6 32. e4 Ke6 33. Re1 Rc8 34. Nf5 Rd8 35. Kb4 Rb8+ 36. Kc3 Rb1 37. Re3 Bf1 38. Kc2 Rb6 39. Ra3 Bh3 40. Ne3 f5 41. Ra7 fxe4 42. fxe4 Rb4 43. Rxh7 Rxe4 44. Rh6+ Kf7 45. Kd3 Rd4+ 46. Ke2 Kg7 47. Rh5 Bg4+ 48. Nxg4 Rxg4 49. Rxe5 Rxh4 50. Kf3 1/2-1/2