[Event "Casual correspondence game"] [Site "https://lichess.org/xWm8GIc8"] [Date "2021.02.19"] [White "Sergey_Bykov"] [Black "lichess AI level 3"] [Result "1-0"] [UTCDate "2021.02.19"] [UTCTime "10:11:41"] [WhiteElo "1500"] [BlackElo "?"] [Variant "Standard"] [TimeControl "-"] [ECO "D10"] [Opening "Slav Defense"] [Termination "Normal"] [Annotator "lichess.org"] 1. c4 d5 2. d4?! { (0.56 → 0.00) Inaccuracy. cxd5 was best. } (2. cxd5 Qxd5 3. Nc3 Qa5 4. f4 c5 5. Nf3 Nc6 6. b3 Bg4) 2... c6 3. Nc3 { D10 Slav Defense } Nh6? { (0.00 → 1.50) Mistake. e6 was best. } (3... e6 4. cxd5 exd5 5. Bf4 Nf6 6. h3 Bd6 7. Bxd6 Qxd6 8. Qc2) 4. cxd5 Qa5?? { (1.37 → 3.55) Blunder. cxd5 was best. } (4... cxd5) 5. a4?? { (3.55 → 1.00) Blunder. dxc6 was best. } (5. dxc6) 5... Ng8?? { (1.00 → 3.11) Blunder. cxd5 was best. } (5... cxd5) 6. e4 Nd7?! { (3.28 → 4.68) Inaccuracy. cxd5 was best. } (6... cxd5 7. exd5) 7. dxc6?! { (4.68 → 3.10) Inaccuracy. Bd2 was best. } (7. Bd2) 7... Ndf6?? { (3.10 → 8.36) Blunder. bxc6 was best. } (7... bxc6 8. Nf3) 8. e5 Nd5 9. Bd2?! { (6.69 → 4.44) Inaccuracy. Bb5 was best. } (9. Bb5 Nxc3) 9... Nb6?? { (4.44 → 12.09) Blunder. bxc6 was best. } (9... bxc6 10. Bc4) 10. Ne4 Qxd2+ 11. Qxd2 f6 12. cxb7 e6 13. bxa8=Q Nxa8 14. Bb5+ Kf7 15. Bc6 Nb6 16. Nd6+ Ke7 17. Qa5 Nh6 18. Qxa7+ Bd7 19. exf6+ Kxd6?! { (19.54 → Mate in 8) Checkmate is now unavoidable. gxf6 was best. } (19... gxf6) 20. Bxd7?! { (Mate in 8 → 18.79) Lost forced checkmate sequence. Qb8+ was best. } (20. Qb8+ Kxc6 21. Rc1+ Nc4 22. Qb5+ Kc7 23. Rxc4+ Bc5 24. Rxc5+ Bc6 25. Qxc6+ Kb8 26. Qb6+ Ka8) 20... Nxd7 21. Qa6+ Kd5 22. Rd1 Nxf6?! { (16.65 → Mate in 6) Checkmate is now unavoidable. Nf5 was best. } (22... Nf5 23. Ne2) 23. Qa5+?! { (Mate in 6 → 15.86) Lost forced checkmate sequence. Rc1 was best. } (23. Rc1 Bb4+ 24. Kf1 Bc3 25. Rxc3 Rc8 26. Qxc8 Kd6 27. Qc7+ Kd5 28. Qe5#) 23... Kc6?! { (15.86 → Mate in 5) Checkmate is now unavoidable. Kd6 was best. } (23... Kd6 24. Qd8+ Nd7 25. Nf3 Nf7 26. Qe8 Be7 27. Qxf7 Rf8 28. Qxg7 Bf6 29. Qxh7 Rh8 30. Qc2) 24. Ne2?! { (Mate in 5 → 15.85) Lost forced checkmate sequence. Rc1+ was best. } (24. Rc1+ Bc5 25. Rxc5+ Kd7 26. Rc7+ Kd8 27. Rxg7+ Ke8 28. Qa8#) 24... Nd5 25. Qc5+ Bxc5 26. dxc5 Nf5 27. b3 Rb8 28. Rc1 Rxb3 29. f4? { (7.70 → 3.72) Mistake. g4 was best. } (29. g4 Rb4 30. gxf5 exf5 31. a5 Nc7 32. O-O Ra4 33. Rfd1 Nb5 34. Ra1 Rxa1 35. Rxa1 Kxc5) 29... Rb4 30. g4 Nfe7 31. a5 Nxf4 32. Nxf4 Rxf4 33. a6 Nd5?! { (5.04 → 6.76) Inaccuracy. Ra4 was best. } (33... Ra4 34. O-O) 34. a7?? { (6.76 → 3.24) Blunder. Ra1 was best. } (34. Ra1 Rf7 35. a7 Rxa7 36. Rxa7 Kxc5 37. Rxg7 Kd4 38. Rxh7 Ke3 39. g5 Nf4 40. h4 Nd3+) 34... Nc7?? { (3.24 → 7.21) Blunder. Ra4 was best. } (34... Ra4 35. Kf2) 35. Rf1? { (7.21 → 4.15) Mistake. Ra1 was best. } (35. Ra1 Kxc5 36. Ke2 Rxg4 37. Rhc1+ Kd6 38. Kf3 Rh4 39. Kg2 Rb4 40. Rcb1 Rb2+ 41. Kh1 Rxh2+) 35... Rxg4? { (4.15 → 7.05) Mistake. Ra4 was best. } (35... Ra4) 36. Rf7? { (7.05 → 4.15) Mistake. Ra1 was best. } (36. Ra1 Rg5 37. Kf2 Rxc5 38. Kg1 Rg5+ 39. Kh1 Rb5 40. Rf7 g6 41. h3 Kb6 42. Ra3 Rb1+) 36... Rg2?? { (4.15 → 16.25) Blunder. Ra4 was best. } (36... Ra4 37. Rxg7 h5 38. Rh7 Rxa7 39. Kf1 Ra4 40. Rxh5 Nd5 41. Rh8 Ra2 42. h4 Ne3+ 43. Kg1) 37. Rxc7+ Kxc7 38. a8=Q Rb2?! { (18.76 → Mate in 6) Checkmate is now unavoidable. Rg5 was best. } (38... Rg5 39. Qa7+) 39. Qa7+ Rb7 40. Qa5+ Kc6 41. Qa4+ Kc7 42. c6 Rb2 43. Qa5+ Kc8 44. c7 Ra2 45. Qc5 Rc2 46. Qf8+ Kb7 47. Rxc2 g6 48. Qb8+ Ka6 49. Ra2# { White wins by checkmate. } 1-0