lichess dev

[Event "Open Arena"] [Site "http://chess-academy.net/cKczk8Is"] [Date "2020.12.30"] [Round "-"] [White "GabrielCONDUR"] [Black "Marius"] [Result "1-0"] [UTCDate "2020.12.30"] [UTCTime "17:02:52"] [WhiteElo "2177"] [BlackElo "1698"] [WhiteRatingDiff "+3"] [BlackRatingDiff "-2"] [Variant "Standard"] [TimeControl "420+2"] [ECO "A35"] [Opening "English Opening: Symmetrical Variation, Four Knights Variation"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. c4 c5 2. Nc3 Nc6 3. Nf3 Nf6 { A35 English Opening: Symmetrical Variation, Four Knights Variation } 4. g3?! { (0.33 → -0.30) Inaccuracy. Best move was d4. } (4. d4 cxd4 5. Nxd4 e6 6. e3 Bb4 7. Be2 O-O 8. O-O d5 9. cxd5 exd5 10. a3 Bd6) 4... b6? { (-0.30 → 0.73) Mistake. Best move was d5. } (4... d5) 5. Bg2 Bb7 6. O-O g6?! { (0.31 → 0.84) Inaccuracy. Best move was e6. } (6... e6) 7. d4 cxd4 8. Nxd4 Nxd4? { (0.52 → 1.92) Mistake. Best move was Bg7. } (8... Bg7 9. b3 h5 10. Bg5 Rb8 11. Nxc6 dxc6 12. Qc2 Qc7 13. Rfd1 O-O 14. Rd3 Nh7 15. Be3) 9. Bxb7 Rb8 10. Bg2 Nf5? { (1.72 → 4.71) Mistake. Best move was Nc6. } (10... Nc6 11. b3 Bg7 12. Bb2 h5 13. Qd2 h4 14. Nd5 h3 15. Bh1 O-O 16. Nf4 Bh6 17. Rad1) 11. e4 Nh6 12. e5 Nfg8 13. Qa4 f6?? { (4.28 → 9.30) Blunder. Best move was Rc8. } (13... Rc8 14. Bf4) 14. e6 Rc8? { (8.78 → 15.82) Mistake. Best move was Nf5. } (14... Nf5 15. Bf4) 15. Rd1 Rc7 16. Bf4 b5?! { (22.56 → Mate in 7) Checkmate is now unavoidable. Best move was Bg7. } (16... Bg7 17. Bxc7) 17. Nxb5 Rc8 18. Rxd7?! { (Mate in 5 → Mate in 6) Not the best checkmate sequence. Best move was Nc7+. } (18. Nc7+ Rxc7 19. Bxc7 Qxc7 20. Rxd7 Qc6 21. Qxc6 Nf7 22. Rdd1#) 18... f5 19. Rxd8+ Rxd8 20. Nd6# { White wins by checkmate. } 1-0