lichess dev

[Event "Open Arena"] [Site "http://chess-academy.net/K6q32WR7"] [Date "2020.12.03"] [Round "-"] [White "Jyoimatison"] [Black "Luca30"] [Result "1-0"] [UTCDate "2020.12.03"] [UTCTime "17:00:02"] [WhiteElo "1500"] [BlackElo "1475"] [WhiteRatingDiff "+163"] [BlackRatingDiff "-10"] [Variant "Standard"] [TimeControl "420+2"] [ECO "C42"] [Opening "Petrov's Defense #4"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. e4 e5 2. Nf3 Nf6?! { (0.22 → 0.73) Inaccuracy. Best move was Nc6. } (2... Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Bxc6 dxc6 7. dxe5) 3. Nxe5 d6 4. Nf3 { C42 Petrov's Defense #4 } Nc6? { (0.54 → 2.21) Mistake. Best move was Nxe4. } (4... Nxe4 5. d4 d5 6. Bd3 Be7 7. O-O Nc6 8. c4 Nb4 9. cxd5) 5. Qe2? { (2.21 → 0.81) Mistake. Best move was d3. } (5. d3) 5... Qe7 6. d4? { (1.19 → -0.13) Mistake. Best move was Nc3. } (6. Nc3) 6... Qd8?? { (-0.13 → 2.99) Blunder. Best move was Qxe4. } (6... Qxe4 7. Qxe4+ Nxe4 8. Bd3 d5 9. O-O Bf5 10. Re1 O-O-O 11. a3 Bg6 12. b4 a6 13. c4) 7. e5? { (2.99 → 1.02) Mistake. Best move was h3. } (7. h3) 7... dxe5 8. dxe5 Nxe5?? { (1.13 → 4.97) Blunder. Best move was Nd5. } (8... Nd5) 9. Nxe5?! { (4.97 → 4.36) Inaccuracy. Best move was Qxe5+. } (9. Qxe5+ Be7) 9... Bd6?? { (4.36 → 14.00) Blunder. Best move was Be6. } (9... Be6 10. Nc3 c6 11. Qe3 Nd5 12. Qg3 h5 13. Bd2 h4 14. Qf3 Bd6 15. Nc4 Bb4 16. O-O-O) 10. Nc4+?? { (14.00 → 4.52) Blunder. Best move was Nc6+. } (10. Nc6+ Be6 11. Nxd8 Kxd8 12. Nc3 Kc8 13. Ne4 Be5 14. Qb5 Nd7 15. f4 c6 16. Qb4 Bc7) 10... Be7 11. Ne5? { (4.82 → 3.12) Mistake. Best move was Bd2. } (11. Bd2) 11... Bd6?? { (3.12 → 13.85) Blunder. Best move was O-O. } (11... O-O 12. Be3 c6 13. Nc3 Re8 14. f4 Bb4 15. Qf3 Nd5 16. Bc4 Bxc3+ 17. bxc3 Qa5 18. Bxd5) 12. Nc6+ Be7 13. Nxd8 Kxd8 14. Bf4 Be6 15. Nc3 Ke8 16. O-O-O Rd8 17. Re1 a5 18. Nb5 c6 19. Nc7+ Kf8 20. Nxe6+ Ke8?! { (26.69 → Mate in 5) Checkmate is now unavoidable. Best move was fxe6. } (20... fxe6 21. Qxe6) 21. Nxd8?! { (Mate in 5 → Mate in 7) Not the best checkmate sequence. Best move was Nc7+. } (21. Nc7+ Kd7 22. Qxe7+ Kc8 23. Nb5 Rd1+ 24. Rxd1 cxb5 25. Qc5#) 21... Kxd8 22. Qxe7+ Kc8 23. Qc7# { White wins by checkmate. } 1-0