lichess dev

[Event "Open Arena"] [Site "http://chess-academy.net/BsBIKjE5"] [Date "2020.12.01"] [Round "-"] [White "CovganetIlinca_13883"] [Black "dragutraisa"] [Result "0-1"] [UTCDate "2020.12.01"] [UTCTime "17:27:14"] [WhiteElo "1683"] [BlackElo "2293"] [WhiteRatingDiff "-1"] [BlackRatingDiff "+2"] [Variant "Standard"] [TimeControl "420+2"] [ECO "C46"] [Opening "Four Knights Game"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. e4 e5 2. Nc3 Nc6 3. Nf3 Nf6 { C46 Four Knights Game } 4. b3? { (0.36 → -0.67) Mistake. Best move was Bb5. } (4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. h3 a6 8. Bxc6 bxc6) 4... a6?! { (-0.67 → 0.17) Inaccuracy. Best move was Bc5. } (4... Bc5 5. Be2 O-O 6. O-O a5 7. d3 d5 8. Bg5 d4 9. Nd5 Be7 10. Nxe7+ Qxe7 11. Bxf6) 5. Bb2 d6?! { (-0.30 → 0.52) Inaccuracy. Best move was Bd6. } (5... Bd6) 6. g3 Be7?! { (0.08 → 0.86) Inaccuracy. Best move was g6. } (6... g6 7. Bg2) 7. Bg2 O-O 8. Qe2? { (0.84 → -0.36) Mistake. Best move was O-O. } (8. O-O) 8... Be6?! { (-0.36 → 0.53) Inaccuracy. Best move was Bg4. } (8... Bg4 9. Nd1 d5 10. exd5 Nd4 11. Bxd4 exd4 12. h3 Bh5 13. O-O Nxd5 14. Nb2 c5 15. Rae1) 9. O-O-O? { (0.53 → -0.66) Mistake. Best move was O-O. } (9. O-O) 9... b5? { (-0.66 → 0.44) Mistake. Best move was Bg4. } (9... Bg4 10. Qe3 Bxf3 11. Bxf3 Nd4 12. h4 b5 13. g4 b4 14. Na4 c5 15. g5 Nd7 16. Be2) 10. Ng5? { (0.44 → -2.00) Mistake. Best move was d4. } (10. d4 Nxd4 11. Nxd4 exd4 12. Rxd4 c5 13. Rdd1 Qc7 14. Kb1 Rac8 15. Nd5 Nxd5 16. exd5 Bf5) 10... Bg4?! { (-2.00 → -1.47) Inaccuracy. Best move was Nd4. } (10... Nd4) 11. f3 Bd7?! { (-1.72 → -0.75) Inaccuracy. Best move was Nd4. } (11... Nd4 12. Qf2 Bd7 13. f4 c5 14. Nf3 Qc7 15. Rde1 a5 16. Nd5 Nxd5 17. exd5 Bf6 18. fxe5) 12. Nd5 Nxd5 13. exd5 Nd4?! { (-1.24 → -0.27) Inaccuracy. Best move was Bxg5. } (13... Bxg5 14. dxc6) 14. Bxd4 exd4 15. f4 Bxg5 16. fxg5 Qxg5 17. Qe4? { (-0.48 → -1.54) Mistake. Best move was Qd3. } (17. Qd3) 17... Qe5 18. Qh4? { (-0.98 → -2.22) Mistake. Best move was Rde1. } (18. Rde1) 18... d3 19. Be4?? { (-2.09 → Mate in 1) Checkmate is now unavoidable. Best move was c3. } (19. c3 Rae8 20. Rhf1 a5 21. Kb2 g5 22. Qh5 b4 23. Rfe1 bxc3+ 24. dxc3 Qf5 25. Qf3 Qxf3) 19... Qa1# { Black wins by checkmate. } 0-1