lichess dev

[Event "Open Arena"] [Site "http://chess-academy.net/4BoNzNbY"] [Date "2021.01.15"] [Round "-"] [White "TibiMat"] [Black "LoverQueens"] [Result "0-1"] [UTCDate "2021.01.15"] [UTCTime "17:19:03"] [WhiteElo "1499"] [BlackElo "1886"] [WhiteRatingDiff "-2"] [BlackRatingDiff "+6"] [Variant "Standard"] [TimeControl "420+2"] [ECO "B07"] [Opening "Pirc Defense #4"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. e4 d6?! { (0.12 → 0.73) Inaccuracy. Best move was e6. } { B07 Pirc Defense #4 } (1... e6 2. Nf3 d5 3. exd5 exd5 4. d4 Nf6 5. Bd3 Bd6 6. O-O) 2. Qf3? { (0.73 → -0.54) Mistake. Best move was d4. } (2. d4 Nf6 3. Nc3 e6 4. Nf3 Be7 5. Bd3 Nbd7 6. e5 dxe5) 2... e5?! { (-0.54 → 0.00) Inaccuracy. Best move was c5. } (2... c5) 3. Bc4 Be6? { (-0.17 → 0.83) Mistake. Best move was Nf6. } (3... Nf6 4. Ne2 Be7 5. Nbc3 O-O 6. O-O c6 7. d4 b5 8. Bb3) 4. Bb3? { (0.83 → -0.21) Mistake. Best move was Bxe6. } (4. Bxe6 fxe6 5. Qb3 Qc8 6. Nf3 Nc6 7. O-O Nf6 8. d3 Be7 9. c3 O-O 10. h3 Rb8) 4... Bxb3?! { (-0.21 → 0.72) Inaccuracy. Best move was Nc6. } (4... Nc6 5. Ne2 Qf6 6. Qe3 O-O-O 7. Nbc3 Nge7 8. Nd5 Bxd5 9. exd5 Nf5 10. Qe4 Nce7 11. O-O) 5. cxb3? { (0.72 → -1.13) Mistake. Best move was Qxb3. } (5. Qxb3 Nc6) 5... Nf6? { (-1.13 → 0.00) Mistake. Best move was Nc6. } (5... Nc6) 6. Nc3 c6? { (-0.36 → 0.74) Mistake. Best move was c5. } (6... c5 7. Nge2 Nc6 8. O-O Nd4 9. Qh3 Be7 10. d3 Qc8 11. Qxc8+ Rxc8 12. Bd2 O-O 13. Rac1) 7. a4? { (0.74 → -1.50) Mistake. Best move was Nge2. } (7. Nge2 c5) 7... Na6?! { (-1.50 → -0.77) Inaccuracy. Best move was d5. } (7... d5) 8. d3?! { (-0.77 → -1.61) Inaccuracy. Best move was Nge2. } (8. Nge2 Nc5) 8... Nb4?! { (-1.61 → -0.65) Inaccuracy. Best move was Nc5. } (8... Nc5) 9. Na2?? { (-0.65 → -8.09) Blunder. Best move was Qe2. } (9. Qe2 d5) 9... Nc2+ 10. Kd1? { (-7.67 → -8.87) Mistake. Best move was Kf1. } (10. Kf1 Nxa1) 10... Nxa1 11. Nh3?! { (-8.58 → -9.37) Inaccuracy. Best move was Ne2. } (11. Ne2 d5) 11... Nxb3 12. Bg5? { (-8.91 → -10.23) Mistake. Best move was Qg3. } (12. Qg3) 12... Be7? { (-10.23 → -8.94) Mistake. Best move was Qa5. } (12... Qa5) 13. Bxf6?! { (-8.94 → -9.66) Inaccuracy. Best move was Qe2. } (13. Qe2 Qa5 14. Qc2 Qxa4 15. Nc1 Nc5 16. Qxa4 Nxa4 17. Kc2 Nc5 18. f3 Ne6 19. Be3 h6) 13... Bxf6?! { (-9.66 → -9.02) Inaccuracy. Best move was Qa5. } (13... Qa5 14. Nc3 Bxf6 15. Qe2 b5 16. Qc2 Nd4 17. Qc1 b4 18. Ne2 Qxa4+ 19. Ke1 Nb3 20. Qb1) 14. g4?! { (-9.02 → -11.04) Inaccuracy. Best move was Qe3. } (14. Qe3 Qa5 15. Kc2 Qxa4 16. Kb1 b5 17. Ng5 Qd4 18. Nf3 Qxe3 19. fxe3 a5 20. h3 Nc5) 14... Qa5 15. Kc2 Nd4+ 16. Kc1 Nxf3 17. Ng1?! { (-23.67 → Mate in 2) Checkmate is now unavoidable. Best move was Nc3. } (17. Nc3) 17... Qd2+?! { (Mate in 2 → Mate in 4) Not the best checkmate sequence. Best move was Qe1+. } (17... Qe1+ 18. Kc2 Nd4#) 18. Kb1 Qd1+ 19. Nc1 Nd2+ 20. Ka2 Qxc1?! { (Mate in 1 → -33.27) Lost forced checkmate sequence. Best move was Qxa4#. } (20... Qxa4#) 21. h4?! { (-33.27 → Mate in 2) Checkmate is now unavoidable. Best move was Nf3. } (21. Nf3 Qxh1) 21... Qc2 22. g5 Qxa4# { Black wins by checkmate. } 0-1