lichess dev

[Event "Open Arena"] [Site "http://chess-academy.net/yiNqC9I5"] [Date "2021.01.29"] [Round "-"] [White "Artiom2012"] [Black "CornelCoslet"] [Result "1-0"] [UTCDate "2021.01.29"] [UTCTime "17:35:11"] [WhiteElo "1167"] [BlackElo "1666"] [WhiteRatingDiff "+101"] [BlackRatingDiff "-22"] [Variant "Standard"] [TimeControl "420+2"] [ECO "C42"] [Opening "Petrov's Defense"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. e4 e5 2. Nf3 Nf6?! { (0.22 → 0.73) Inaccuracy. Best move was Nc6. } { C42 Petrov's Defense } (2... Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5) 3. d3? { (0.73 → -0.35) Mistake. Best move was Nxe5. } (3. Nxe5 d6 4. Nf3 Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O Nc6) 3... d6?! { (-0.35 → 0.29) Inaccuracy. Best move was Nc6. } (3... Nc6 4. Be2) 4. a4?! { (0.29 → -0.28) Inaccuracy. Best move was c4. } (4. c4 c5 5. Be3 Be7 6. Nc3 O-O 7. Be2 Be6 8. O-O Nc6 9. Nd2 Nd4 10. Nd5 Nd7) 4... Bg4?! { (-0.28 → 0.48) Inaccuracy. Best move was Be7. } (4... Be7 5. Be2) 5. a5?! { (0.48 → -0.42) Inaccuracy. Best move was h3. } (5. h3 Be6 6. c4 c5 7. Nc3 Nc6 8. Nd5 Be7 9. Be2 Bd7 10. O-O O-O 11. Be3 h6) 5... d5?! { (-0.42 → 0.36) Inaccuracy. Best move was c5. } (5... c5 6. h3) 6. exd5?! { (0.36 → -0.23) Inaccuracy. Best move was h3. } (6. h3 Bxf3 7. Qxf3 Nc6 8. c3 a6 9. Be2 Be7 10. O-O Qd6 11. Bg5 O-O-O 12. Nd2 Kb8) 6... Qxd5?! { (-0.23 → 0.39) Inaccuracy. Best move was Nxd5. } (6... Nxd5) 7. Ra3?? { (0.39 → -3.56) Blunder. Best move was Nc3. } (7. Nc3 Qd7) 7... Bxa3 8. b3?? { (-3.33 → -8.98) Blunder. Best move was bxa3. } (8. bxa3 Qxa5+ 9. Bd2 Qa4 10. Be2 Nc6 11. O-O O-O-O 12. Qc1 Nd4 13. Nxd4 exd4 14. Bxg4+ Nxg4) 8... Qxa5+? { (-8.98 → -7.63) Mistake. Best move was Bxf3. } (8... Bxf3 9. gxf3 Bxc1 10. Qxc1 Qxa5+ 11. Qd2 Qa1 12. Qd1 Nc6 13. Bg2 Nd5 14. f4 exf4 15. Bxd5) 9. Nbd2? { (-7.63 → -9.02) Mistake. Best move was Bd2. } (9. Bd2 Bb4 10. Be2 Nc6 11. h3 Bxf3 12. Bxf3 Bxd2+ 13. Qxd2 Qc5 14. O-O O-O-O 15. Bxc6 Qxc6) 9... Bb4?! { (-9.02 → -8.21) Inaccuracy. Best move was Bxf3. } (9... Bxf3) 10. Ba3? { (-8.21 → -13.78) Mistake. Best move was Be2. } (10. Be2 Bxf3 11. Bxf3 e4 12. Qe2 Nc6 13. O-O Nd4 14. Qe3 Nxc2 15. Qe2 Nd4 16. Qe3 Nf5) 10... Bxa3 11. h4 O-O 12. c4 Re8 13. b4 Qxb4 14. c5 Qxc5 15. Nb3 Qc3+ 16. Nbd2 Bb4 17. Qa1?! { (-19.71 → Mate in 5) Checkmate is now unavoidable. Best move was Be2. } (17. Be2 e4) 17... Qxd2+?! { (Mate in 5 → -12.99) Lost forced checkmate sequence. Best move was Qxa1+. } (17... Qxa1+ 18. Ke2 e4 19. dxe4 Rxe4+ 20. Nxe4 Qe1+ 21. Kd3 Qxe4#) 18. Nxd2 e4 19. Qd1 exd3+ 20. Be2 dxe2 21. Qb3 Bxd2+ 22. Kxd2 Rd8+ 23. Ke3 Re8+ 24. Kf4 e1=Q 25. Rxe1 Rxe1 26. f3 Rf1? { (-25.22 → -8.82) Mistake. Best move was Be6. } (26... Be6) 27. Qxb7 Na6?? { (-8.65 → Mate in 4) Checkmate is now unavoidable. Best move was Rb1. } (27... Rb1 28. Qxb1 Bd7 29. Qb7 Bc6 30. Qc8+ Ne8 31. Qf5 Nd7 32. Qa5 a6 33. g4 Nef6 34. Kg3) 28. Qxa8+ Nb8 29. Qxb8+ Bc8 30. Qxc8+ Ne8 31. Qxe8# { White wins by checkmate. } 1-0