[Event "2023 Autumn Marathon"] [Site "https://lichess.org/HBEWhEDA"] [Date "2023.10.28"] [White "ChessTheory64"] [Black "sacwin"] [Result "0-1"] [UTCDate "2023.10.28"] [UTCTime "05:17:20"] [WhiteElo "2496"] [BlackElo "2034"] [WhiteRatingDiff "-11"] [BlackRatingDiff "+11"] [WhiteTitle "FM"] [Variant "Standard"] [TimeControl "180+2"] [ECO "B03"] [Opening "Alekhine Defense: Four Pawns Attack"] [Termination "Normal"] [Annotator "lichess.org"] 1. e4 Nf6 2. e5 Nd5 3. c4 Nb6 4. d4 d6 5. f4 { B03 Alekhine Defense: Four Pawns Attack } dxe5 6. fxe5 Bf5 7. Be3?! { (0.84 → 0.00) Inaccuracy. Nc3 was best. } (7. Nc3 e6 8. Nf3 Be7 9. Be3 Nc6 10. Be2 f6 11. O-O O-O) 7... e6 8. Nc3 Nc6?! { (0.17 → 0.72) Inaccuracy. Bb4 was best. } (8... Bb4 9. Be2) 9. Be2 Be7 10. Nf3 O-O 11. O-O f6 12. exf6 Bxf6 13. Qd2 Qe7 14. Rad1 Rad8 15. Qc1 Rd7 16. Rd2?! { (0.81 → 0.13) Inaccuracy. Kh1 was best. } (16. Kh1 Kh8) 16... Rfd8 17. Rfd1 h6?! { (-0.04 → 0.51) Inaccuracy. Bg4 was best. } (17... Bg4 18. Ne4 Bxf3 19. Nxf6+ Qxf6 20. Bxf3 Nxd4 21. Bg4 Qg6 22. h3 Qxg4 23. Rxd4 Qe4 24. Rxd7) 18. b3 a6?! { (0.10 → 0.67) Inaccuracy. g5 was best. } (18... g5 19. d5) 19. h3 g5 20. Bd3?! { (0.60 → -0.23) Inaccuracy. d5 was best. } (20. d5 exd5) 20... Qh7? { (-0.23 → 0.95) Mistake. Nxd4 was best. } (20... Nxd4 21. Nxd4 Bxd4 22. Bxd4 Rxd4 23. Bxf5 Rxd2 24. Rxd2 exf5 25. Rxd8+ Qxd8 26. Qe3 Qf6 27. Qe8+) 21. Bxf5 exf5 22. d5 Ne5 23. Nxe5 Bxe5 24. Re2?! { (0.64 → 0.00) Inaccuracy. d6 was best. } (24. d6 Qf7) 24... Qg7 25. Rd3 Rf7? { (0.00 → 1.57) Mistake. Nc8 was best. } (25... Nc8 26. Qd2 Re7 27. Bd4 Bxd4+ 28. Rxd4 Rxe2 29. Nxe2 Nd6 30. Rd3 Re8 31. Nd4 Qe5 32. Qd1) 26. Bc5?? { (1.57 → -0.64) Blunder. Bxg5 was best. } (26. Bxg5 hxg5) 26... Nc8? { (-0.64 → 0.69) Mistake. Nd7 was best. } (26... Nd7 27. Bb4) 27. Qe1 Bf6 28. Re8+ Rxe8 29. Qxe8+ Kh7 30. Nd1? { (0.77 → -0.60) Mistake. Qxc8 was best. } (30. Qxc8 Bxc3) 30... Nd6 31. Qe2 Ne4 32. Be3 f4?! { (-1.01 → -0.42) Inaccuracy. Ng3 was best. } (32... Ng3 33. Qc2 Qg6 34. Bf2 f4 35. c5 Be5 36. Qc4 h5 37. d6 cxd6 38. cxd6 b5 39. Qd5) 33. Qf3? { (-0.42 → -1.57) Mistake. Bxf4 was best. } (33. Bxf4 Bd4+ 34. Be3 Ng3 35. Qe1 Rf1+ 36. Qxf1 Bxe3+ 37. Nxe3 Nxf1 38. Kxf1 Qb2 39. a4 h5) 33... Ng3 34. Bf2 Be5 35. Qg4? { (-1.60 → -3.44) Mistake. c5 was best. } (35. c5 Qg6 36. d6 cxd6 37. cxd6 Bxd6 38. Nb2 Re7 39. Qd1 Bb4 40. Rd7 Qf5 41. Rd5 Qe4) 35... Qg6?! { (-3.44 → -2.51) Inaccuracy. h5 was best. } (35... h5 36. Qe6 Re7 37. Qc8 Qg6 38. Rd2 Bd6 39. a4 b6 40. Nc3 g4 41. Qxa6 gxh3 42. c5) 36. Qf3 Qf5?? { (-2.89 → -0.57) Blunder. h5 was best. } (36... h5) 37. Bd4?? { (-0.57 → -6.01) Blunder. Bxg3 was best. } (37. Bxg3 fxg3 38. Qxf5+ Rxf5 39. Nc3 h5 40. Ne4 h4 41. c5 Kg6 42. d6 Rf4 43. Nd2 cxd6) 37... Bxd4+ 38. Rxd4 Re7 39. Nc3?? { (-5.95 → Mate in 3) Checkmate is now unavoidable. Qf2 was best. } (39. Qf2 Re2 40. d6 Rxf2 41. Nxf2 Ne2+ 42. Kh1 cxd6 43. Re4 f3 44. Kh2 Qc5 45. Re7+ Kg6) 39... Qe5?? { (Mate in 3 → -5.17) Lost forced checkmate sequence. Re1+ was best. } (39... Re1+ 40. Qf1 Rxf1+ 41. Kh2 Rh1#) 40. Qd3+ Kg7 41. Qd2?? { (-5.40 → Mate in 3) Checkmate is now unavoidable. Qd1 was best. } (41. Qd1 Qe1+ 42. Kh2 Qxc3 43. Rd3 Qe5 44. Qf3 Nh5 45. c5 Nf6 46. a3 g4 47. hxg4 Qg5) 41... Qe1+ 42. Qxe1 Rxe1+ 43. Kf2 Rf1# { Black wins by checkmate. } 0-1