lichess dev

[Event "Arena Sah Arena"] [Site "http://chess-academy.net/cd1sSjkU"] [Date "2025.04.08"] [Round "-"] [White "Alex_Alex"] [Black "David7777"] [Result "1-0"] [UTCDate "2025.04.08"] [UTCTime "16:36:42"] [WhiteElo "1580"] [BlackElo "1329"] [WhiteRatingDiff "+5"] [BlackRatingDiff "-21"] [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. c4?! { (0.64 → -0.27) Inaccuracy. Best move was d4. } (3. d4 exd4 4. Nxd4 Nf6 5. Nc3 Be7 6. Bb5+ c6 7. Be2 O-O) 3... Qd7? { (-0.27 → 1.39) Mistake. Best move was c5. } (3... c5 4. d3 Be7 5. Nc3 Nc6 6. h3 f5 7. exf5 Bxf5 8. g4 Bg6 9. Bg2 Nb4 10. Ne4) 4. Nc3? { (1.39 → 0.13) Mistake. Best move was d4. } (4. d4 exd4 5. Nxd4 Nf6 6. Nc3 c5 7. Nc2 Nc6 8. Bd3 g6 9. Be2 Bg7 10. Bf4 O-O) 4... Qc6? { (0.13 → 1.86) Mistake. Best move was c5. } (4... c5 5. Be2 Nf6 6. d3 Be7 7. O-O O-O 8. h3 b6 9. Rb1 Nc6 10. Nd5 Nxd5 11. cxd5) 5. d3?! { (1.86 → 0.90) Inaccuracy. Best move was d4. } (5. d4 Nf6 6. d5 Qd7 7. Be2 Be7 8. O-O O-O 9. Be3 Qd8 10. h3 Nbd7 11. Qc2 c6) 5... a6?! { (0.90 → 1.68) Inaccuracy. Best move was Qd7. } (5... Qd7 6. b4 Be7 7. b5 Nf6 8. Be2 Qd8 9. O-O a6 10. d4 axb5 11. cxb5 Nbd7 12. a4) 6. a3 b5? { (1.23 → 2.99) Mistake. Best move was Nf6. } (6... Nf6) 7. cxb5 axb5?! { (2.50 → 3.43) Inaccuracy. Best move was Qb7. } (7... Qb7 8. bxa6) 8. d4 b4?? { (2.69 → 6.47) Blunder. Best move was Qb7. } (8... Qb7) 9. Nd5?? { (6.47 → 2.27) Blunder. Best move was Bb5. } (9. Bb5) 9... exd4?? { (2.27 → 10.20) Blunder. Best move was Qb7. } (9... Qb7 10. dxe5) 10. Nxd4?? { (10.20 → 3.86) Blunder. Best move was Bb5. } (10. Bb5) 10... f5?? { (3.86 → 19.16) Blunder. Best move was Qb7. } (10... Qb7) 11. Nxc6 Nxc6 12. Nxc7+ Kd7 13. Nxa8 Bb7 14. Nb6+ Kc7 15. Be3 Ne5 16. Bb5 Nc6 17. Rc1 Be7?! { (25.43 → Mate in 6) Checkmate is now unavoidable. Best move was Ne7. } (17... Ne7 18. Nd5+) 18. Bxc6 Bxc6 19. Nd5+?! { (Mate in 3 → Mate in 8) Not the best checkmate sequence. Best move was Qa4. } (19. Qa4 fxe4 20. Qxc6+ Kb8 21. Qc7#) 19... Kd7 20. Nxe7?! { (Mate in 8 → 25.15) Lost forced checkmate sequence. Best move was Rxc6. } (20. Rxc6 Bd8 21. Nb6+ Ke8 22. Qxd6 g6 23. Qd7+ Kf8 24. Qxd8+ Kg7 25. Rc7+ Ne7 26. Qxe7+ Kg8) 20... Nxe7 21. axb4 Ke6 22. exf5+ Kxf5 23. Qd3+ Ke5 24. f4+ Kf6?! { (25.02 → Mate in 9) Checkmate is now unavoidable. Best move was Ke6. } (24... Ke6 25. O-O) 25. Qxd6+ Kf7 26. f5 Rc8 27. f6?! { (Mate in 8 → 25.80) Lost forced checkmate sequence. Best move was Qe6+. } (27. Qe6+ Kf8 28. f6 gxf6 29. O-O Ke8 30. Rxf6 Rc7 31. Rcf1 Kd8 32. Rf8+ Be8 33. Rd1+ Nd5) 27... gxf6?! { (25.80 → Mate in 8) Checkmate is now unavoidable. Best move was Nf5. } (27... Nf5 28. Qf4) 28. Rf1 h5 29. Qxf6+?! { (Mate in 5 → Mate in 5) Not the best checkmate sequence. Best move was Rxf6+. } (29. Rxf6+ Ke8 30. Bc5 Rc7 31. Rd1 Bd5 32. Rxd5 Nxd5 33. Rf8#) 29... Ke8 30. Qf7+?! { (Mate in 5 → Mate in 5) Not the best checkmate sequence. Best move was Qe6. } (30. Qe6 Bb7 31. Rd1 Bd5 32. Rxd5 Rc1+ 33. Bxc1 h4 34. Qd7#) 30... Kd7 31. Rd1+ Kc7 32. Qxe7+ Kb8 33. Qa7# { White wins by checkmate. } 1-0