lichess dev

[Event "Open Arena"] [Site "http://chess-academy.net/D1fJ8n4M"] [Date "2021.02.26"] [Round "-"] [White "MrCilikos"] [Black "Shon4321Official"] [Result "0-1"] [UTCDate "2021.02.26"] [UTCTime "17:45:24"] [WhiteElo "1440"] [BlackElo "2117"] [WhiteRatingDiff "-2"] [BlackRatingDiff "+1"] [Variant "Standard"] [TimeControl "420+2"] [ECO "B30"] [Opening "Sicilian Defense: Old Sicilian"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. e4 c5 2. Nf3 Nc6 { B30 Sicilian Defense: Old Sicilian } 3. Nc3 e5 4. a3 Nf6 5. b4? { (0.29 → -0.80) Mistake. Best move was Bb5. } (5. Bb5 d6 6. O-O Be7 7. d3 O-O 8. Bc4 Nd4 9. h3 Be6 10. Bg5 Nxe4 11. Nxe4 d5) 5... cxb4 6. axb4?! { (-0.78 → -1.45) Inaccuracy. Best move was Nd5. } (6. Nd5 Nxd5) 6... Bxb4 7. Na2? { (-0.89 → -2.13) Mistake. Best move was Bc4. } (7. Bc4 d6) 7... Ba5?! { (-2.13 → -1.57) Inaccuracy. Best move was Bc5. } (7... Bc5 8. Bd3) 8. Ba3?! { (-1.57 → -2.50) Inaccuracy. Best move was Nc3. } (8. Nc3) 8... d6?! { (-2.50 → -1.75) Inaccuracy. Best move was Nxe4. } (8... Nxe4 9. Bd3 d5 10. O-O Bg4 11. c3 Qf6 12. Be2 Bb6 13. Nb4 Rd8 14. Rc1 Nxf2 15. Rxf2) 9. Qb1? { (-1.75 → -2.99) Mistake. Best move was Nc3. } (9. Nc3 Bxc3) 9... O-O 10. h4? { (-2.66 → -4.28) Mistake. Best move was c3. } (10. c3 Re8 11. Bc4 d5 12. exd5 e4 13. O-O exf3 14. dxc6 fxg2 15. Re1 bxc6 16. Qd3 Be6) 10... Nxe4 11. Qb5?? { (-3.80 → -7.98) Blunder. Best move was c3. } (11. c3 Nf6) 11... a6? { (-7.98 → -5.51) Mistake. Best move was Nd4. } (11... Nd4 12. Qd3) 12. Qd3 Nc5? { (-5.98 → -4.80) Mistake. Best move was Bf5. } (12... Bf5) 13. Qf5?? { (-4.80 → -18.39) Blunder. Best move was Bxc5. } (13. Bxc5 dxc5) 13... Bxf5 14. Rh3 Bxh3 15. gxh3 e4 16. Ng5 h6 17. O-O-O hxg5 18. hxg5 Qxg5 19. h4 Qh6 20. c3 Nd3+ 21. Kc2 Bb6 22. f3 f5 23. Nb4?! { (-23.12 → Mate in 16) Checkmate is now unavoidable. Best move was Nc1. } (23. Nc1 Qxh4) 23... Ncxb4+ 24. cxb4?! { (-36.89 → Mate in 6) Checkmate is now unavoidable. Best move was Bxb4. } (24. Bxb4 Qe6) 24... Rac8+ 25. Kb3 Qe6+ 26. Ka4 Ba7?! { (Mate in 3 → Mate in 5) Not the best checkmate sequence. Best move was Nb2+. } (26... Nb2+ 27. Bxb2 Qa2+ 28. Ba3 Qc2#) 27. fxe4 b5+ 28. Ka5 d5 29. Bxd3 Qb6# { Black wins by checkmate. } 0-1