lichess dev

[Event "Swiderski Arena"] [Site "http://chess-academy.net/QSXvBiEm"] [Date "2021.08.07"] [Round "-"] [White "Spanish"] [Black "Chessdev"] [Result "0-1"] [UTCDate "2021.08.07"] [UTCTime "07:42:48"] [WhiteElo "1500"] [BlackElo "2020"] [WhiteRatingDiff "-33"] [BlackRatingDiff "+7"] [Variant "Standard"] [TimeControl "120+0"] [ECO "A02"] [Opening "Bird Opening"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. f4?! { (0.15 → -0.38) Inaccuracy. Best move was e4. } { A02 Bird Opening } (1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. O-O d6) 1... d6?! { (-0.38 → 0.27) Inaccuracy. Best move was d5. } (1... d5 2. Nf3 Bf5 3. e3 e6 4. Be2 Nf6 5. Nh4 Be7 6. O-O) 2. g4? { (0.27 → -2.50) Mistake. Best move was e4. } (2. e4 e5) 2... d5? { (-2.50 → -1.18) Mistake. Best move was Bxg4. } (2... Bxg4) 3. e4? { (-1.18 → -2.21) Mistake. Best move was g5. } (3. g5 h6 4. d4 Nc6 5. Nf3 Bf5 6. a3 e6 7. Bg2 Bd6 8. h4 Nge7 9. Nc3 hxg5) 3... Nc6? { (-2.21 → -0.59) Mistake. Best move was e5. } (3... e5) 4. h4? { (-0.59 → -2.51) Mistake. Best move was e5. } (4. e5) 4... e6? { (-2.51 → -0.10) Mistake. Best move was h5. } (4... h5 5. g5) 5. d4? { (-0.10 → -2.17) Mistake. Best move was e5. } (5. e5) 5... f6?? { (-2.17 → 0.91) Blunder. Best move was dxe4. } (5... dxe4) 6. c4? { (0.91 → -2.07) Mistake. Best move was e5. } (6. e5 Qe7) 6... Nge7? { (-2.07 → 0.33) Mistake. Best move was dxe4. } (6... dxe4 7. Be3) 7. b4?? { (0.33 → -3.31) Blunder. Best move was Nc3. } (7. Nc3 dxe4 8. d5 Nb8 9. Be2 exd5 10. cxd5 c6 11. d6 Nd5 12. Nxd5 cxd5 13. Qxd5 Qxd6) 7... Bd7?? { (-3.31 → 0.48) Blunder. Best move was dxe4. } (7... dxe4) 8. a4?? { (0.48 → -3.64) Blunder. Best move was Nc3. } (8. Nc3) 8... dxc4?? { (-3.64 → -0.58) Blunder. Best move was Nxb4. } (8... Nxb4) 9. Bxc4?! { (-0.58 → -1.48) Inaccuracy. Best move was b5. } (9. b5 Na5) 9... e5? { (-1.48 → 0.66) Mistake. Best move was Nxb4. } (9... Nxb4) 10. dxe5 fxe5? { (-0.25 → 0.80) Mistake. Best move was Ng6. } (10... Ng6) 11. fxe5?? { (0.80 → -4.43) Blunder. Best move was f5. } (11. f5 Ng6) 11... Nxe5 12. Nf3?? { (-4.06 → -7.32) Blunder. Best move was Be2. } (12. Be2 N7g6) 12... Nxc4 13. Qb3?! { (-7.16 → -7.94) Inaccuracy. Best move was Qe2. } (13. Qe2 Bxg4 14. Qxc4 Bxf3 15. Rf1 Qd1+ 16. Kf2 Qd7 17. Kxf3 O-O-O 18. Bf4 Ng6 19. Bxc7 Qxc7) 13... Bxg4? { (-7.94 → -6.30) Mistake. Best move was Be6. } (13... Be6 14. Na3 Nc6 15. O-O Nd4 16. Qd3 Nxf3+ 17. Rxf3 Qxh4 18. Nxc4 Rd8 19. Nd6+ Bxd6 20. Qb5+) 14. Qxc4 Bxf3 15. b5?? { (-6.74 → -16.11) Blunder. Best move was O-O. } (15. O-O Nc6) 15... Qd1+ 16. Kf2 Qxh1 17. Qxc7?! { (-14.03 → Mate in 8) Checkmate is now unavoidable. Best move was Bf4. } (17. Bf4 Ng6) 17... Qg2+ 18. Ke3 Qd2+?? { (-84.14 → 7.78) Blunder. Best move was Qe2+. } (18... Qe2+) 19. Kxf3?? { (7.78 → -18.36) Blunder. Best move was Nxd2. } (19. Nxd2) 19... Qxc1?? { (-18.36 → 2.43) Blunder. Best move was Qd1+. } (19... Qd1+) 20. Nc3?? { (2.43 → -23.54) Blunder. Best move was Qxc1. } (20. Qxc1 Ng6 21. h5 Ne5+ 22. Ke2 Bd6 23. Qe3 O-O 24. Nd2 Rad8 25. Rf1 Rxf1 26. Nxf1 b6) 20... Qxa1 21. Qxb7?! { (-18.76 → Mate in 8) Checkmate is now unavoidable. Best move was Ne2. } (21. Ne2 b6) 21... Qxc3+ 22. Ke2 Qb2+?! { (Mate in 5 → Mate in 8) Not the best checkmate sequence. Best move was Rd8. } (22... Rd8 23. Qa8 Rxa8 24. a5 Rd8 25. Kf1 Rd2 26. b6 Qa1#) 23. Kd3 Rd8+ 24. Kc4 Qc2+ 25. Kb4 Nd5+?! { (Mate in 1 → Mate in 2) Not the best checkmate sequence. Best move was Nc6#. } (25... Nc6#) 26. Ka5 Qc3+?! { (Mate in 2 → Mate in 4) Not the best checkmate sequence. Best move was Bb4+. } (26... Bb4+ 27. Ka6 Qxa4#) 27. Ka6 Nb4+?! { (Mate in 4 → Mate in 4) Not the best checkmate sequence. Best move was Nc7+. } (27... Nc7+ 28. Qxc7 Qxc7 29. a5 Rd7 30. b6 Qc4#) 28. Ka5 Nc6+ 29. Ka6 Qa5# { Black wins by checkmate. } 0-1