lichess dev

[Event "Alexandra Kosteniuk Arena"] [Site "http://chess-academy.net/htw7y1Sq"] [Date "2020.08.05"] [Round "-"] [White "emi"] [Black "costelconstantin"] [Result "0-1"] [UTCDate "2020.08.05"] [UTCTime "16:00:01"] [WhiteElo "1500"] [BlackElo "1500"] [WhiteRatingDiff "-163"] [BlackRatingDiff "+162"] [Variant "Standard"] [TimeControl "420+0"] [ECO "B00"] [Opening "Nimzowitsch Defense: Kennedy Variation"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. e4 e5 2. d4?! { (0.30 → -0.38) Inaccuracy. Best move was Nf3. } (2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. Re1 Nc5) 2... Nc6? { (-0.38 → 0.84) Mistake. Best move was exd4. } { B00 Nimzowitsch Defense: Kennedy Variation } (2... exd4 3. Nf3 Bb4+ 4. Nbd2 Nc6 5. a3 Bxd2+ 6. Qxd2 Nf6 7. e5) 3. dxe5 Nxe5 4. Bf4? { (1.03 → -0.10) Mistake. Best move was Nf3. } (4. Nf3 Nxf3+ 5. gxf3 d5 6. Nc3 Nf6 7. exd5 Bd6 8. Qe2+ Qe7 9. Be3 O-O 10. O-O-O a6) 4... Qf6? { (-0.10 → 1.19) Mistake. Best move was Ng6. } (4... Ng6 5. Bg3) 5. Bxe5? { (1.19 → -0.71) Mistake. Best move was Bg3. } (5. Bg3) 5... Qxe5 6. f4? { (-0.31 → -2.57) Mistake. Best move was Nd2. } (6. Nd2) 6... Qxe4+ 7. Qe2 Qxe2+ 8. Bxe2 Be7?! { (-2.44 → -1.66) Inaccuracy. Best move was d5. } (8... d5 9. Nf3) 9. f5? { (-1.66 → -3.39) Mistake. Best move was Nd2. } (9. Nd2 Nf6) 9... Nf6?! { (-3.39 → -2.68) Inaccuracy. Best move was d5. } (9... d5) 10. Nh3?! { (-2.68 → -3.40) Inaccuracy. Best move was Nc3. } (10. Nc3 d5) 10... d6? { (-3.40 → -2.40) Mistake. Best move was d5. } (10... d5 11. O-O Bd7 12. Nc3 O-O-O 13. Rae1 Rde8 14. Kh1 Bc5 15. Nf4 c6 16. g4 Bd6 17. g5) 11. Nf4?! { (-2.40 → -3.35) Inaccuracy. Best move was O-O. } (11. O-O) 11... Bxf5 12. g4? { (-3.08 → -4.96) Mistake. Best move was c4. } (12. c4 g5 13. Nh5 Nxh5 14. Bxh5 Be6 15. Nd2 O-O 16. O-O-O Kg7 17. Be2 Rae8 18. h3 f5) 12... Bxg4?! { (-4.96 → -4.42) Inaccuracy. Best move was Nxg4. } (12... Nxg4) 13. Bxg4 Nxg4 14. Rg1? { (-4.60 → -5.63) Mistake. Best move was Nc3. } (14. Nc3 Bh4+ 15. Kd2 O-O 16. h3 Ne5 17. Raf1 Rae8 18. b3 c6 19. Nd1 g6 20. a4 f5) 14... Bh4+? { (-5.63 → -4.35) Mistake. Best move was Nxh2. } (14... Nxh2) 15. Kd1? { (-4.35 → -5.65) Mistake. Best move was Ke2. } (15. Ke2 Ne5) 15... Nf2+?! { (-5.65 → -4.67) Inaccuracy. Best move was h5. } (15... h5 16. h3 Nf2+ 17. Kd2 O-O-O 18. Nc3 g5 19. Ng2 Bg3 20. Ne3 Bf4 21. Nd5 Nxh3 22. Rh1) 16. Ke1?? { (-4.67 → -8.54) Blunder. Best move was Kc1. } (16. Kc1 h6 17. Nd2 Bg5 18. Rg2 Bxf4 19. Rxf2 g5 20. c3 Kd7 21. Kc2 Rae8 22. Rd1 f5) 16... Nh3+ 17. Kf1 Nxf4 18. Rg4? { (-7.97 → -9.21) Mistake. Best move was Nd2. } (18. Nd2 Bf6 19. Re1+ Ne6 20. c3 O-O 21. Re3 g6 22. Ne4 Be5 23. h4 Nf4 24. Nf2 Kg7) 18... g5 19. Rg1?! { (-8.78 → -9.66) Inaccuracy. Best move was Nc3. } (19. Nc3 f5) 19... O-O-O? { (-9.66 → -8.55) Mistake. Best move was h5. } (19... h5 20. Nd2 g4 21. Ne4 O-O-O 22. Ng3 Bf6 23. c3 Rhe8 24. Re1 Re5 25. Rxe5 dxe5 26. Ke1) 20. Nd2 Rde8 21. Nf3 Rhg8? { (-8.75 → -7.55) Mistake. Best move was Re6. } (21... Re6) 22. Nxh4 gxh4 23. Rh1? { (-7.49 → -14.16) Mistake. Best move was Rxg8. } (23. Rxg8) 23... h3?! { (-14.16 → -9.11) Inaccuracy. Best move was Rg2. } (23... Rg2 24. Rg1 h3 25. Rxg2 hxg2+ 26. Kf2 Rg8 27. h4 g1=Q+ 28. Rxg1 Nh3+ 29. Kf3 Nxg1+ 30. Kf2) 24. Kf2?! { (-9.11 → -9.66) Inaccuracy. Best move was Re1. } (24. Re1 Re5) 24... Rg2+ 25. Kf1? { (-9.18 → Mate in 4) Checkmate is now unavoidable. Best move was Kf3. } (25. Kf3 Ne6 26. Ke3 Rxc2 27. b3 Rg8 28. Rhg1 Rg6 29. b4 Rxh2 30. Rgf1 Rg3+ 31. Rf3 Rxf3+) 25... Ree2 26. Rg1 Rgf2# { Black wins by checkmate. } 0-1