lichess dev

[Event "SAH Lectie Arena"] [Site "http://chess-academy.net/ZZJncpa1"] [Date "2021.06.07"] [Round "-"] [White "Ivan2003"] [Black "Cipi"] [Result "1-0"] [UTCDate "2021.06.07"] [UTCTime "15:43:36"] [WhiteElo "1662"] [BlackElo "1697"] [WhiteRatingDiff "+143"] [BlackRatingDiff "-113"] [Variant "Standard"] [TimeControl "420+0"] [ECO "C41"] [Opening "Philidor Defense #2"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. e4 e5 2. Nf3 d6 { C41 Philidor Defense #2 } 3. Nc3?! { (0.64 → 0.14) Inaccuracy. Best move was d4. } (3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Be7 6. Bb5+ c6 7. Be2 O-O) 3... f6? { (0.14 → 1.93) Mistake. Best move was Be7. } (3... Be7) 4. Bc4?! { (1.93 → 1.22) Inaccuracy. Best move was d4. } (4. d4) 4... Nh6? { (1.22 → 2.41) Mistake. Best move was Nc6. } (4... Nc6 5. d4 Bg4 6. Be3 exd4 7. Bxd4 Qd7 8. Be3 O-O-O 9. Qe2 Bh5 10. Bd5 Nge7 11. O-O-O) 5. d4 exd4?! { (2.05 → 2.74) Inaccuracy. Best move was c6. } (5... c6) 6. Qxd4? { (2.74 → 1.71) Mistake. Best move was Nxd4. } (6. Nxd4 g6) 6... c5?? { (1.71 → 4.72) Blunder. Best move was Nc6. } (6... Nc6) 7. Qd5 g6?? { (4.13 → 9.61) Blunder. Best move was Qd7. } (7... Qd7) 8. Bxh6 Qa5? { (8.96 → 21.66) Mistake. Best move was Qd7. } (8... Qd7) 9. Qf7+ Kd8 10. Bxf8 Rxf8?! { (20.54 → Mate in 10) Checkmate is now unavoidable. Best move was Bg4. } (10... Bg4 11. Qxf6+) 11. Qxf8+ Kd7 12. Bb5+?! { (Mate in 5 → Mate in 8) Not the best checkmate sequence. Best move was O-O-O. } (12. O-O-O Qc7 13. Bb5+ Nc6 14. Nd5 Qd8 15. Qf7+ Qe7 16. Qxe7#) 12... Qxb5 13. Nxb5 a6 14. Qxd6+?! { (Mate in 4 → Mate in 7) Not the best checkmate sequence. Best move was O-O-O. } (14. O-O-O Kc6 15. a4 Kb6 16. Qd8+ Kc6 17. Qxd6#) 14... Ke8 15. Nc7+ Kf7 16. Rd1?! { (Mate in 6 → 32.31) Lost forced checkmate sequence. Best move was Nd5. } (16. Nd5 Nd7 17. Qe7+ Kg8 18. Rd1 h6 19. Nxf6+ Nxf6 20. Rd8+ Ne8 21. Rxe8#) 16... Kg7?! { (32.31 → Mate in 3) Checkmate is now unavoidable. Best move was Nc6. } (16... Nc6 17. Nxa8) 17. e5?! { (Mate in 3 → Mate in 4) Not the best checkmate sequence. Best move was Ne8+. } (17. Ne8+ Kg8 18. Qe7 f5 19. Qg7#) 17... g5 18. Qxf6+ Kg8 19. Rd8# { White wins by checkmate. } 1-0