lichess dev

[Event "Masterclass Arena"] [Site "http://chess-academy.net/OpSqRkXk"] [Date "2022.02.08"] [Round "-"] [White "raul"] [Black "raresmanciu123"] [Result "0-1"] [UTCDate "2022.02.08"] [UTCTime "15:17:56"] [WhiteElo "1340"] [BlackElo "1893"] [WhiteRatingDiff "-1"] [BlackRatingDiff "+4"] [Variant "Standard"] [TimeControl "300+2"] [ECO "A20"] [Opening "English Opening: King's English Variation"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. c4 e5 { A20 English Opening: King's English Variation } 2. Qa4?! { (0.23 → -0.57) Inaccuracy. Best move was Nc3. } (2. Nc3 Nf6 3. Nf3 Nc6 4. e3 Bb4 5. d4 d6 6. Be2 O-O) 2... Nc6 3. Qb5? { (-0.01 → -1.41) Mistake. Best move was Nc3. } (3. Nc3 Bb4) 3... a6?! { (-1.41 → -0.83) Inaccuracy. Best move was Nf6. } (3... Nf6 4. Nc3) 4. Qb3?! { (-0.83 → -1.46) Inaccuracy. Best move was Qa4. } (4. Qa4 Nf6) 4... Nf6 5. Qf3?? { (-0.94 → -5.21) Blunder. Best move was Nc3. } (5. Nc3 Na5 6. Qa4 c6 7. Nf3 e4 8. Nd4 b5 9. cxb5 axb5 10. Qc2 d5 11. e3 Bd6) 5... Bc5? { (-5.21 → -2.50) Mistake. Best move was Nd4. } (5... Nd4 6. Qg3) 6. Nh3? { (-2.50 → -5.44) Mistake. Best move was e3. } (6. e3) 6... O-O? { (-5.44 → -3.00) Mistake. Best move was Nd4. } (6... Nd4) 7. Nf4?? { (-3.00 → -9.11) Blunder. Best move was Qd3. } (7. Qd3 d5 8. cxd5 Nd4 9. Nc3 Bxh3 10. gxh3 Nxd5 11. Kd1 Nb4 12. Qg3 Ndc2 13. a3 Nxa1) 7... exf4 8. Qxf4?! { (-8.45 → -9.12) Inaccuracy. Best move was Nc3. } (8. Nc3 d5 9. Nxd5 Nd4 10. Qxf4 Nc2+ 11. Kd1 Nxd5 12. cxd5 Nxa1 13. b3 Qxd5 14. Bb2 Nxb3) 8... Nh5?? { (-9.12 → -3.59) Blunder. Best move was d5. } (8... d5) 9. Qh4?? { (-3.59 → -20.40) Blunder. Best move was Qf5. } (9. Qf5 d5 10. Qxh5 Nd4 11. b4 Nc2+ 12. Kd1 Nxa1 13. Bb2 Be7 14. Qxd5 Be6 15. Qxd8 Raxd8) 9... Qxh4 10. g4 Qxf2+ 11. Kd1 Nf4 12. d3 Bd6 13. Rg1 Qxg1 14. Kc2?! { (-36.29 → Mate in 6) Checkmate is now unavoidable. Best move was Nd2. } (14. Nd2 Re8) 14... Qxf1 15. Kb3 Qxe2?! { (Mate in 2 → Mate in 7) Not the best checkmate sequence. Best move was Qd1+. } (15... Qd1+ 16. Kc3 Nxe2#) 16. Ka4 Qxd3 17. b4 Qxc4?! { (Mate in 2 → Mate in 3) Not the best checkmate sequence. Best move was Qc2+. } (17... Qc2+ 18. Ka3 Bxb4#) 18. a3 Nd4?! { (Mate in 1 → Mate in 2) Not the best checkmate sequence. Best move was b5#. } (18... b5#) 19. Ra2 Qb5# { Black wins by checkmate. } 0-1