lichess dev

[Event "Masterclass Arena"] [Site "http://chess-academy.net/DWwgv42d"] [Date "2021.12.17"] [Round "-"] [White "Mariaj"] [Black "raul"] [Result "1-0"] [UTCDate "2021.12.17"] [UTCTime "17:15:31"] [WhiteElo "1743"] [BlackElo "1549"] [WhiteRatingDiff "+61"] [BlackRatingDiff "-68"] [Variant "Standard"] [TimeControl "120+1"] [ECO "B20"] [Opening "Sicilian Defense"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. e4 c5 { B20 Sicilian Defense } 2. f3? { (0.53 → -0.79) Mistake. Best move was Ne2. } (2. Ne2 Nf6 3. Nbc3 d5 4. exd5 Nxd5 5. Nxd5 Qxd5 6. Nc3 Qe5+) 2... d6? { (-0.79 → 0.25) Mistake. Best move was e6. } (2... e6 3. Be2 d5 4. d3 Nc6 5. f4 Be7 6. Nf3 Nf6 7. e5 Ng4 8. O-O O-O 9. h3) 3. g4? { (0.25 → -1.62) Mistake. Best move was Bb5+. } (3. Bb5+ Nc6 4. Ne2 e5 5. O-O Nf6 6. d3 Be7 7. Nbc3 O-O 8. Bc4 a6 9. Nd5 Nxd5) 3... e6? { (-1.62 → -0.62) Mistake. Best move was e5. } (3... e5 4. Bb5+) 4. Nh3?! { (-0.62 → -1.23) Inaccuracy. Best move was Bg2. } (4. Bg2 Nc6 5. d3 Qh4+ 6. Kf1 d5 7. Nc3 d4 8. Nb5 Qd8 9. f4 a6 10. Na3 b5) 4... Qc7? { (-1.23 → 0.00) Mistake. Best move was Nc6. } (4... Nc6 5. d3) 5. Nf4? { (0.00 → -1.31) Mistake. Best move was d4. } (5. d4 cxd4 6. Qxd4 Nc6 7. Qf2 d5 8. Bf4 Qa5+ 9. Bd2 Qc7) 5... Qb6? { (-1.31 → 0.01) Mistake. Best move was Be7. } (5... Be7) 6. b4? { (0.01 → -1.52) Mistake. Best move was b3. } (6. b3 Be7) 6... Qxb4?! { (-1.52 → -0.89) Inaccuracy. Best move was cxb4. } (6... cxb4 7. d4) 7. Nc3?! { (-0.89 → -1.58) Inaccuracy. Best move was Na3. } (7. Na3 Nc6) 7... Qb6?! { (-1.58 → -1.00) Inaccuracy. Best move was Nc6. } (7... Nc6 8. h4) 8. Na4?! { (-1.00 → -1.76) Inaccuracy. Best move was Bg2. } (8. Bg2 Nc6) 8... Qa5 9. Nc3?! { (-1.40 → -2.00) Inaccuracy. Best move was Nb2. } (9. Nb2 Be7) 9... Qc7? { (-2.00 → -0.79) Mistake. Best move was Nc6. } (9... Nc6 10. Bg2 g6 11. Bb2 Bg7 12. Rb1 Qd8 13. O-O Bd4+ 14. Kh1 h5 15. g5 Bg7 16. Nfe2) 10. Bb5+?! { (-0.79 → -1.73) Inaccuracy. Best move was d4. } (10. d4 cxd4 11. Qxd4 Nc6 12. Qd2 a6 13. Bb2 Ne5 14. Be2 b5 15. a4 bxa4 16. Nxa4 Rb8) 10... Qd7?? { (-1.73 → 8.32) Blunder. Best move was Nd7. } (10... Nd7 11. O-O) 11. Bxd7+ Kxd7?! { (8.12 → 8.95) Inaccuracy. Best move was Bxd7. } (11... Bxd7 12. Rb1 b6 13. Qe2 Nc6 14. Nb5 Kd8 15. c3 a6 16. Na3 b5 17. O-O Ke8 18. Nc2) 12. Na4?! { (8.95 → 8.08) Inaccuracy. Best move was d4. } (12. d4 cxd4) 12... a5? { (8.08 → 13.62) Mistake. Best move was b5. } (12... b5 13. Nb2 h5 14. Nxh5 Nc6 15. Nf4 e5 16. Ne2 Nge7 17. O-O Rh4 18. a3 Kc7 19. Nd3) 13. O-O? { (13.62 → 8.96) Mistake. Best move was Nb6+. } (13. Nb6+ Kc6) 13... b6? { (8.96 → 13.32) Mistake. Best move was Ra6. } (13... Ra6) 14. Ba3? { (13.32 → 8.93) Mistake. Best move was Nxb6+. } (14. Nxb6+ Kc7) 14... b5? { (8.93 → 11.72) Mistake. Best move was Kc7. } (14... Kc7 15. d4) 15. Rc1? { (11.72 → 7.45) Mistake. Best move was Nb6+. } (15. Nb6+) 15... bxa4 16. c4? { (7.59 → 6.08) Mistake. Best move was d4. } (16. d4 Ke8 17. dxc5 dxc5 18. Nd5 Ra7 19. Nb6 Ba6 20. c4 Ne7 21. Bxc5 Nec6 22. Be3 h5) 16... d5?? { (6.08 → 11.61) Blunder. Best move was Kc7. } (16... Kc7 17. d4) 17. Qxa4+ Ke7 18. Qc6?? { (22.81 → -5.97) Blunder. Best move was Bxc5+. } (18. Bxc5+ Kd8 19. Bb6+ Ke7 20. cxd5 Nd7 21. d6+ Ke8 22. Qc6 Ne7 23. Qxa8 Nxb6 24. Qa7 Nd7) 18... Kd8?? { (-5.97 → 17.38) Blunder. Best move was Nxc6. } (18... Nxc6) 19. Qxa8 f6 20. Qxb8 g6?! { (29.32 → Mate in 8) Checkmate is now unavoidable. Best move was Ne7. } (20... Ne7 21. Nxe6+) 21. Bxc5?! { (Mate in 8 → 24.92) Lost forced checkmate sequence. Best move was Nxe6+. } (21. Nxe6+ Kd7 22. Qc7+ Ke8 23. Qxc8+ Kf7 24. Qxf8+ Kxe6 25. cxd5+ Ke5 26. Bxc5 Kf4 27. Be3+ Ke5) 21... e5?! { (24.92 → Mate in 5) Checkmate is now unavoidable. Best move was Bxc5+. } (21... Bxc5+ 22. Kg2) 22. Ba3?! { (Mate in 5 → Mate in 8) Not the best checkmate sequence. Best move was Ne6+. } (22. Ne6+ Ke8 23. Qxc8+ Kf7 24. Qxf8+ Kxe6 25. Qe8+ Ne7 26. Qxe7#) 22... Kd7 23. cxd5 Kd8 24. Qxc8# { White wins by checkmate. } 1-0