lichess dev

[Event "Masterclass Arena"] [Site "http://chess-academy.net/HFEoVgMW"] [Date "2022.02.11"] [Round "-"] [White "raul"] [Black "lemon"] [Result "0-1"] [UTCDate "2022.02.11"] [UTCTime "17:06:09"] [WhiteElo "1346"] [BlackElo "1874"] [WhiteRatingDiff "-2"] [BlackRatingDiff "+4"] [Variant "Standard"] [TimeControl "300+1"] [ECO "A00"] [Opening "Saragossa Opening"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. c3 { A00 Saragossa Opening } e5 2. Qb3?! { (0.18 → -0.71) Inaccuracy. Best move was d4. } (2. d4 e4 3. c4 c6 4. Nc3 d5 5. cxd5 cxd5 6. Bf4 Nc6) 2... d5 3. a4?! { (-0.40 → -1.33) Inaccuracy. Best move was d4. } (3. d4 Nc6 4. e3 Nf6 5. Bb5 e4 6. c4 Be7 7. Nc3 O-O 8. cxd5 Nb4 9. Bc4 c6) 3... Be6? { (-1.33 → 0.12) Mistake. Best move was Nf6. } (3... Nf6 4. d3) 4. Ra3? { (0.12 → -2.58) Mistake. Best move was d4. } (4. d4 Nc6) 4... Bxa3 5. d4?? { (-2.03 → -6.87) Blunder. Best move was Nxa3. } (5. Nxa3 b6 6. d4 e4 7. Bf4 a6 8. e3 Ne7 9. Ne2 O-O 10. Bg3 c5 11. Nf4 Nbc6) 5... e4?? { (-6.87 → -2.07) Blunder. Best move was Bd6. } (5... Bd6) 6. Qxa3?! { (-2.07 → -2.64) Inaccuracy. Best move was Nxa3. } (6. Nxa3 b6 7. Bf4 a6 8. e3 Ne7 9. Ne2 O-O 10. Bg3 c5 11. Nf4 Nbc6 12. Qd1 Nf5) 6... Nc6 7. c4? { (-2.31 → -4.19) Mistake. Best move was Bf4. } (7. Bf4 Nge7) 7... Nge7?! { (-4.19 → -3.38) Inaccuracy. Best move was Nxd4. } (7... Nxd4 8. Qc3) 8. Bg5? { (-3.38 → -5.02) Mistake. Best move was e3. } (8. e3 dxc4) 8... O-O? { (-5.02 → -3.25) Mistake. Best move was f6. } (8... f6) 9. e3?! { (-3.25 → -3.94) Inaccuracy. Best move was Bxe7. } (9. Bxe7 Qxe7 10. Qxe7 Nxe7 11. e3 dxc4 12. Ne2 b5 13. Nf4 bxa4 14. Nxe6 fxe6 15. Bxc4 Rab8) 9... f6 10. Bd3?? { (-3.72 → -8.64) Blunder. Best move was Bh4. } (10. Bh4 dxc4) 10... fxg5 11. Nh3? { (-8.34 → -11.42) Mistake. Best move was Bc2. } (11. Bc2 a5 12. Qc3 Nb4 13. Ne2 c6 14. O-O Ng6 15. Nd2 Qd7 16. Kh1 Nh4 17. Ng1 h6) 11... exd3 12. Rg1 dxc4 13. Kf1 Nf5 14. Ke1 Nfxd4 15. Kd1 Nb5 16. Re1 Nxa3 17. Nxa3?! { (-35.69 → Mate in 7) Checkmate is now unavoidable. Best move was Nc3. } (17. Nc3 Nc2) 17... d2 18. Rf1 Bxh3?! { (Mate in 5 → Mate in 6) Not the best checkmate sequence. Best move was Qd3. } (18... Qd3 19. Nf4 Qxf1+ 20. Kxd2 Rad8+ 21. Kc2 Qd1+ 22. Kc3 Qd2#) 19. gxh3 Ne5 20. e4 Nd3 21. f3 Nxb2+ 22. Kc2 d1=Q+ 23. Rxd1 Qxd1+ 24. Kxb2 Rad8 25. Kc3 Qd3+?! { (Mate in 1 → Mate in 3) Not the best checkmate sequence. Best move was Qb3#. } (25... Qb3#) 26. Kb4 Rd6?! { (Mate in 3 → Mate in 4) Not the best checkmate sequence. Best move was Qb3+. } (26... Qb3+ 27. Kc5 Rf6 28. Nxc4 Rc6#) 27. Kb5 Qb3+ 28. Ka5 Qb6# { Black wins by checkmate. } 0-1