[Event "2021 Summer Marathon"] [Site "https://lichess.org/Aq2VXG5p"] [Date "2021.08.07"] [White "Mahmud2007"] [Black "Insterburg"] [Result "0-1"] [UTCDate "2021.08.07"] [UTCTime "06:23:24"] [WhiteElo "1544"] [BlackElo "2344"] [WhiteRatingDiff "+0"] [BlackRatingDiff "+0"] [BlackTitle "NM"] [Variant "Standard"] [TimeControl "60+0"] [ECO "D00"] [Opening "Queen's Pawn Game: Accelerated London System, Steinitz Countergambit"] [Termination "Normal"] [Annotator "lichess.org"] 1. d4 d5 2. Bf4 c5 { D00 Queen's Pawn Game: Accelerated London System, Steinitz Countergambit } 3. Nf3 cxd4 4. Nxd4 Nc6 5. Nxc6 bxc6 6. Bg3 Qb6 7. e3 Qxb2 8. Nd2 Bf5 9. Bd3 Bxd3 10. cxd3 Qc3 11. d4 Qd3 12. Qe2 Qxe2+ 13. Kxe2 Nf6 14. Rhe1 e6 15. Kf1 Bb4 16. Red1 Bxd2 17. Rxd2 Ne4 18. Rdd1 Kd7 19. Bf4 f6 20. Kg1 Rhc8 21. a3 c5 22. f3 Nc3 23. Rdc1 Ne2+ 24. Kf1 Nxc1 25. Rxc1 cxd4 26. exd4 Rxc1+ 27. Bxc1 Rc8 28. Bd2 Rc4 29. Ke2 Rxd4 30. Be3 Rc4 31. Bxa7 Rc3 32. Be3 Rxa3 33. Bc1 Ra2+ 34. Bd2 e5 35. Ke3 Rxd2 36. Kxd2 d4 37. Kd3 Ke6 38. Ke4 f5+ 39. Kd3 Kd5 40. g4 e4+ 41. fxe4+ fxe4+ 42. Ke2 g5 43. Kd2 Ke5 44. Ke2 Kf4 45. h4 Kxg4 46. hxg5 Kxg5 47. Kd2 Kf4 48. Ke2 h5 49. Kd2 h4 50. Ke2 h3 51. Kd2 d3 52. Kc3 Ke3 53. Kc4 d2 54. Kc5 d1=Q 55. Kc6 Qd8 56. Kb7 Qd6 57. Ka8 Kd4 58. Kb7 Kc5 59. Ka8 Qd7 60. Kb8 Kb6 61. Ka8 Qb7# { Black wins by checkmate. } 0-1