lichess dev

[Event "Friends Arena"] [Site "http://chess-academy.net/DQk7s0B8"] [Date "2020.07.09"] [Round "-"] [White "FRoman"] [Black "Hori"] [Result "1-0"] [UTCDate "2020.07.09"] [UTCTime "16:17:14"] [WhiteElo "1794"] [BlackElo "1337"] [WhiteRatingDiff "+3"] [BlackRatingDiff "-29"] [Variant "Standard"] [TimeControl "420+2"] [ECO "B23"] [Opening "Sicilian Defense: Closed Variation"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. e4 c5 2. Nc3 { B23 Sicilian Defense: Closed Variation } Qa5?! { (0.27 → 1.01) Inaccuracy. Best move was Nc6. } (2... Nc6 3. Nf3 d6 4. Bc4 Nf6 5. d4 cxd4 6. Nxd4 e6 7. h3) 3. Bc4?! { (1.01 → 0.08) Inaccuracy. Best move was Nf3. } (3. Nf3) 3... Nc6?! { (0.08 → 0.74) Inaccuracy. Best move was e6. } (3... e6 4. d3) 4. Nf3?! { (0.74 → 0.08) Inaccuracy. Best move was f4. } (4. f4 e6) 4... Nd8? { (0.08 → 2.07) Mistake. Best move was e6. } (4... e6 5. O-O a6 6. Bd5 Nge7 7. Bb3 b5 8. d3 Ng6 9. Ne2 Be7 10. c3 O-O 11. Be3) 5. d4 cxd4 6. Nxd4 b6?? { (1.92 → 7.63) Blunder. Best move was Nf6. } (6... Nf6 7. O-O) 7. Bd2?? { (7.63 → 1.63) Blunder. Best move was Nb5. } (7. Nb5 Ne6 8. a3 a6 9. b4 axb5 10. bxa5 bxc4 11. axb6 Bb7 12. O-O g6 13. Nd5 Bg7) 7... Bb7?? { (1.63 → 9.47) Blunder. Best move was Qe5. } (7... Qe5) 8. Nd5?? { (9.47 → 1.99) Blunder. Best move was Ncb5. } (8. Ncb5) 8... Nc6?? { (1.99 → 13.41) Blunder. Best move was Qc5. } (8... Qc5) 9. Bxa5 Nxa5 10. Nc7+ Kd8 11. Nxa8 Bxa8 12. Bxf7 Bxe4 13. Nb5 a6 14. Nd4 Nc4 15. Qe2 Bxg2 16. Qxc4 Bxh1?! { (17.70 → Mate in 4) Checkmate is now unavoidable. Best move was e5. } (16... e5 17. Rg1 exd4 18. Rxg2 Nh6 19. Bh5 d3 20. Qxd3 Ng8 21. Qxa6 Nf6 22. Qxb6+ Ke7 23. Qd4) 17. Qxa6?! { (Mate in 4 → 16.59) Lost forced checkmate sequence. Best move was Ne6+. } (17. Ne6+ dxe6 18. O-O-O+ Bd5 19. Bxe6 h5 20. Qc8#) 17... Kc7?! { (16.59 → Mate in 4) Checkmate is now unavoidable. Best move was e5. } (17... e5 18. Qxb6+) 18. Nb5+ Kc6 19. a4?! { (Mate in 3 → Mate in 4) Not the best checkmate sequence. Best move was c4. } (19. c4 Kc5 20. b4+ Kxb4 21. Qa3#) 19... e5 20. Qc8# { White wins by checkmate. } 1-0