lichess dev

[Event "Hamppe Arena"] [Site "http://chess-academy.net/vlkur754"] [Date "2020.06.15"] [Round "-"] [White "cosmac"] [Black "Valerka"] [Result "0-1"] [UTCDate "2020.06.15"] [UTCTime "16:22:33"] [WhiteElo "1128"] [BlackElo "1597"] [WhiteRatingDiff "-4"] [BlackRatingDiff "+24"] [Variant "Standard"] [TimeControl "420+2"] [ECO "A40"] [Opening "Polish Defense"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. d4 b5? { (0.15 → 1.23) Mistake. Best move was d5. } { A40 Polish Defense } (1... d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 Bb4 5. Bg5 O-O 6. e3) 2. d5? { (1.23 → -0.26) Mistake. Best move was e4. } (2. e4 Bb7) 2... Na6? { (-0.26 → 1.14) Mistake. Best move was Nf6. } (2... Nf6 3. Nd2) 3. Nc3? { (1.14 → -0.68) Mistake. Best move was e4. } (3. e4 Nc5 4. e5 e6 5. b4 Na4 6. Bxb5 Bxb4+ 7. Kf1 Nc3 8. Nxc3 Bxc3 9. Rb1 exd5) 3... Bb7? { (-0.68 → 0.48) Mistake. Best move was b4. } (3... b4) 4. Nxb5?! { (0.48 → -0.37) Inaccuracy. Best move was a3. } (4. a3 Nf6 5. e4 c6 6. Bg5 h6 7. Bxf6 exf6 8. Nf3 Bd6 9. Bd3 Nc5 10. b4 Nxd3+) 4... g6? { (-0.37 → 1.33) Mistake. Best move was Nf6. } (4... Nf6) 5. Nxc7+?? { (1.33 → -3.59) Blunder. Best move was c4. } (5. c4 c6) 5... Qxc7 6. Bg5? { (-3.23 → -4.46) Mistake. Best move was e4. } (6. e4 Nf6) 6... Bh6? { (-4.46 → -3.43) Mistake. Best move was Bg7. } (6... Bg7 7. c3 Nf6 8. Bxf6 Bxf6 9. e3 O-O 10. Nf3 Nc5 11. Bc4 Ne4 12. Bb3 Ba6 13. Nd2) 7. Bxh6 Nxh6 8. c4? { (-3.04 → -4.63) Mistake. Best move was Qd2. } (8. Qd2 Ng4 9. e4 Qb6 10. c4 O-O 11. Nh3 f5 12. Be2 Nf6 13. exf5 Ne4 14. Qc2 Qa5+) 8... f5? { (-4.63 → -2.61) Mistake. Best move was Qxc4. } (8... Qxc4 9. Qd2 Rc8 10. e3 Qc2 11. Ne2 Qxd2+ 12. Kxd2 Bxd5 13. Nc3 Bb7 14. Rc1 O-O 15. f3) 9. Qb1?? { (-2.61 → -6.11) Blunder. Best move was Qd2. } (9. Qd2) 9... O-O? { (-6.11 → -4.72) Mistake. Best move was Qa5+. } (9... Qa5+ 10. Kd1 Ng4 11. Nh3 Rc8 12. e3 Bxd5 13. Qc2 Be4 14. Qc3 Qxc3 15. bxc3 Bc6 16. f3) 10. b3? { (-4.72 → -7.36) Mistake. Best move was Qc2. } (10. Qc2) 10... e6?! { (-7.36 → -6.38) Inaccuracy. Best move was Qa5+. } (10... Qa5+) 11. e4? { (-6.38 → -9.18) Mistake. Best move was Qc1. } (11. Qc1 Ng4) 11... fxe4?! { (-9.18 → -8.40) Inaccuracy. Best move was Qa5+. } (11... Qa5+) 12. f3? { (-8.40 → -12.29) Mistake. Best move was Be2. } (12. Be2 Qa5+ 13. Kf1 Rxf2+ 14. Kxf2 Rf8+ 15. Nf3 Qc5+ 16. Ke1 exf3 17. gxf3 exd5 18. Qb2 d4) 12... exd5 13. cxd5 exf3 14. gxf3 Qc5 15. b4 Qxd5? { (-20.45 → -7.82) Mistake. Best move was Rae8+. } (15... Rae8+ 16. Be2) 16. f4? { (-7.82 → -14.59) Mistake. Best move was Qb3. } (16. Qb3 Qxb3 17. axb3 Nxb4 18. Rc1 Ng4 19. Rc4 Rae8+ 20. Be2 Ne3 21. Rc5 Bc6 22. Kd2 Re6) 16... Nxb4 17. f5 Na6 18. fxg6?! { (-11.56 → Mate in 7) Checkmate is now unavoidable. Best move was Qb3. } (18. Qb3 Nc5) 18... hxg6?? { (Mate in 7 → 0.00) Lost forced checkmate sequence. Best move was Rxf1+. } (18... Rxf1+ 19. Kxf1 Qg2+ 20. Ke1 Re8+ 21. Kd1 Bf3+ 22. Nxf3 Qe2+ 23. Kc1 Rc8+ 24. Qc2 Qxc2#) 19. a4?? { (0.00 → Mate in 7) Checkmate is now unavoidable. Best move was Qxg6+. } (19. Qxg6+ Kh8 20. Qxh6+ Kg8 21. Qg6+ Kh8) 19... Rfe8+?! { (Mate in 7 → -16.35) Lost forced checkmate sequence. Best move was Rxf1+. } (19... Rxf1+ 20. Kxf1 Qg2+ 21. Ke1 Re8+ 22. Kd1 Bf3+ 23. Nxf3 Qe2+ 24. Kc1 Rc8+ 25. Qc2 Qxc2#) 20. Be2 Rac8?? { (-17.87 → 0.00) Blunder. Best move was Re6. } (20... Re6 21. h4) 21. Qxb7?? { (0.00 → Mate in 9) Checkmate is now unavoidable. Best move was Qxg6+. } (21. Qxg6+ Kf8 22. Qxh6+ Ke7 23. Qh4+ Kf7 24. Qh7+ Kf6 25. Qh6+ Ke7) 21... Qxb7 22. Nf3 Rc6?! { (Mate in 3 → -28.42) Lost forced checkmate sequence. Best move was Qxf3. } (22... Qxf3 23. Ra2 Rc1+ 24. Kd2 Qc3#) 23. Ne5?! { (-28.42 → Mate in 7) Checkmate is now unavoidable. Best move was O-O. } (23. O-O Rxe2) 23... Rce6?! { (Mate in 7 → -23.33) Lost forced checkmate sequence. Best move was Rxe5. } (23... Rxe5 24. O-O Rxe2 25. Rf8+ Kxf8 26. Rf1+ Kg7 27. Rf7+ Nxf7 28. Kf1 Rcc2 29. Kg1 Qg2#) 24. Nd3?! { (-23.33 → Mate in 3) Checkmate is now unavoidable. Best move was O-O. } (24. O-O Rxe5) 24... Rxe2+ 25. Kd1 Qxh1+ 26. Ne1 Qxe1# { Black wins by checkmate. } 0-1