lichess dev

[Event "Open Arena"] [Site "http://chess-academy.net/9TtJmhkY"] [Date "2020.12.15"] [Round "-"] [White "teormg"] [Black "Stefanos"] [Result "1-0"] [UTCDate "2020.12.15"] [UTCTime "17:04:19"] [WhiteElo "1500"] [BlackElo "1256"] [WhiteRatingDiff "+85"] [BlackRatingDiff "-5"] [Variant "Standard"] [TimeControl "420+2"] [ECO "A00"] [Opening "Polish Opening"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. b4?! { (0.15 → -0.55) Inaccuracy. Best move was e4. } { A00 Polish Opening } (1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d3 Bc5 5. O-O d6) 1... e5 2. c4? { (-0.56 → -1.61) Mistake. Best move was Bb2. } (2. Bb2 Bxb4 3. Bxe5 Nf6 4. Nc3 c6 5. a3 Be7 6. e4 O-O) 2... c5? { (-1.61 → 0.27) Mistake. Best move was Bxb4. } (2... Bxb4 3. Bb2 d6 4. Nf3 c5 5. e3 Nf6 6. Nc3 Nc6 7. Qc2 O-O 8. Be2 Bxc3 9. Bxc3) 3. bxc5?! { (0.27 → -0.33) Inaccuracy. Best move was b5. } (3. b5) 3... Bxc5?! { (-0.33 → 0.31) Inaccuracy. Best move was Nc6. } (3... Nc6 4. e3) 4. a3? { (0.31 → -1.14) Mistake. Best move was e3. } (4. e3) 4... Qh4? { (-1.14 → 0.67) Mistake. Best move was Bd4. } (4... Bd4 5. Nc3) 5. g3? { (0.67 → -1.91) Mistake. Best move was e3. } (5. e3) 5... Qd4 6. d3?? { (-1.84 → -5.96) Blunder. Best move was e3. } (6. e3 Qxa1 7. Qc2 Bd4 8. Ne2 Nc6 9. d3 Nh6 10. exd4 Nxd4 11. Nxd4 Qxd4 12. Bg2 Nf5) 6... Qxa1 7. Nc3?? { (-5.20 → -11.85) Blunder. Best move was Qc2. } (7. Qc2 Qd4) 7... Qxc3+ 8. Qd2 Qd4 9. Nf3 Qxf2+ 10. Kd1 Be3? { (-12.58 → -7.36) Mistake. Best move was Nc6. } (10... Nc6 11. Bh3 Be7 12. Bb2 d6 13. Bxc8 Rxc8 14. Qe1 Qc5 15. Qg1 Qxg1+ 16. Rxg1 Nf6 17. Kd2) 11. Qc3? { (-7.36 → -12.47) Mistake. Best move was Qxe3. } (11. Qxe3 Qxe3 12. Bxe3 Nc6 13. c5 Nge7 14. Bg2 O-O 15. Ke1 Nf5 16. Bf2 d5 17. cxd6 Rd8) 11... Bxc1 12. Kxc1 Qc5 13. Nxe5 Nc6 14. Nxc6 Qxc6 15. Qe5+ Qe6 16. Qe4 b5?? { (-12.80 → -6.04) Blunder. Best move was Qxe4. } (16... Qxe4 17. dxe4 Nf6 18. Bg2 O-O 19. Rd1 Re8 20. Rd4 Re5 21. h4 b6 22. Bf3 Bb7 23. g4) 17. cxb5?? { (-6.04 → -11.93) Blunder. Best move was Qxa8. } (17. Qxa8 Ne7) 17... Bb7?? { (-11.93 → -6.94) Blunder. Best move was Qxe4. } (17... Qxe4 18. dxe4 Bb7 19. Bg2 Nf6 20. Kb2 Bxe4 21. Bxe4 Nxe4 22. Rd1 Rc8 23. Rd3 Rc5 24. a4) 18. h4?? { (-6.94 → -35.61) Blunder. Best move was Qxb7. } (18. Qxb7) 18... Bxe4 19. dxe4?! { (-31.00 → Mate in 5) Checkmate is now unavoidable. Best move was Rg1. } (19. Rg1 Qb6) 19... Qxe4?! { (Mate in 5 → Mate in 5) Not the best checkmate sequence. Best move was Rc8+. } (19... Rc8+ 20. Kb2 Qe5+ 21. Ka2 Qxb5 22. Bh3 Rc2+ 23. Ka1 Qb2#) 20. Rg1 Qe3+?! { (Mate in 4 → Mate in 6) Not the best checkmate sequence. Best move was Rc8+. } (20... Rc8+ 21. Kb2 Qc2+ 22. Ka1 Rc3 23. Bh3 Rxa3#) 21. Kd1 Qxg1?! { (Mate in 2 → Mate in 7) Not the best checkmate sequence. Best move was Rc8. } (21... Rc8 22. Ke1 Rc1#) 22. Ke1 Qxg3+?! { (Mate in 3 → Mate in 7) Not the best checkmate sequence. Best move was Rc8. } (22... Rc8 23. g4 Qe3 24. Bg2 Rc1#) 23. Kd2 O-O-O 24. a4 Qf4+ 25. Kd3 Qxf1 26. a5 Re8 27. b6 Qxe2+ 28. Kd4 Qd2+?! { (Mate in 4 → Mate in 4) Not the best checkmate sequence. Best move was Re4+. } (28... Re4+ 29. Kc3 Qf3+ 30. Kb2 Re2+ 31. Ka1 Qf1#) 29. Kc4 Re4+ 30. Kc5 Qxa5+ 31. Kd6 Nf6?! { (Mate in 1 → Mate in 2) Not the best checkmate sequence. Best move was Re6#. } (31... Re6#) 32. b7+ Kd8?? { (Mate in 2 → Mate in 1) Lost forced checkmate sequence. Best move was Kxb7. } (32... Kxb7 33. h5 Re6#) 33. b8=Q# { White wins by checkmate. } 1-0