[Event "US Championship"] [Site "St. Louis, MO USA"] [Date "2009.05.11"] [Round "4"] [White "Varuzhan Eduardovich Akobian"] [Black "Julio Becerra Rivero"] [Result "1-0"] [WhiteElo "2612"] [BlackElo "2609"] [Variant "Standard"] [TimeControl "-"] [ECO "D46"] [Opening "Semi-Slav Defense: Chigorin Defense"] [Termination "Normal"] [Annotator "lichess.org"] 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 Nbd7 6. Qc2 Bd6 7. Bd3 { D46 Semi-Slav Defense: Chigorin Defense } dxc4 8. Bxc4 b5 9. Be2 Bb7 10. O-O O-O 11. Rd1 Qc7 12. e4 e5 13. Bg5 exd4 14. Rxd4 b4 15. Rad1 Bc5 16. Rxd7 Nxd7 17. Na4 Bb6 18. Be7 Ne5 19. Bd6 Nxf3+ 20. Bxf3 Qc8 21. Bxf8 Qxf8 22. e5 Rd8 23. Nxb6 axb6 24. g3 Rxd1+ 25. Qxd1 Qe7 26. Qd4 b5 27. Qa7 Qc7 28. Qc5 g6 29. Kg2 Kg7 30. h4 h5?! { (1.46 → 2.27) Inaccuracy. Qc8 was best. } (30... Qc8 31. h5 Qf8 32. h6+ Kg8 33. Qe3 Qe7 34. Qa7 Qd7 35. Qc5 Qe8 36. Qd6 Qf8 37. Qf6) 31. b3 Ba8?! { (2.15 → 2.90) Inaccuracy. Qd7 was best. } (31... Qd7 32. Qxb4 c5 33. Qxc5 Bxf3+ 34. Kxf3 Qd3+ 35. Kg2 Qe4+ 36. Kh2 b4 37. Qc4 Qb7 38. Qd4) 32. e6 fxe6 33. Qxb4 Qa7 34. Qc3+?! { (2.95 → 1.96) Inaccuracy. Qe4 was best. } (34. Qe4) 34... Kh7 35. b4 Qxa2? { (1.87 → 3.56) Mistake. c5 was best. } (35... c5 36. Qxc5 Bxf3+ 37. Kxf3 Qa8+ 38. Kf4 Qxa2 39. Ke5 Kg7 40. Qd4 Qa6 41. Qd7+ Kh6 42. Qe8) 36. Qf6 Qa7 37. Be4 Qg7 38. Qxe6 Bb7 39. g4 Kh6?? { (2.33 → 6.86) Blunder. hxg4 was best. } (39... hxg4) 40. gxh5 Kxh5 41. f3 Kh6 42. h5 Qb2+?! { (6.29 → 17.98) Inaccuracy. Bc8 was best. } (42... Bc8 43. Qxc8) 43. Kg3 Qg7 44. hxg6 Qc7+ 45. f4 Bc8?! { (13.59 → Mate in 5) Checkmate is now unavoidable. Kg7 was best. } (45... Kg7) 46. Qf6 { Black resigns. } 1-0