lichess dev

[Event "Masteclass Arena"] [Site "http://chess-academy.net/85kj92kc"] [Date "2021.11.23"] [Round "-"] [White "andreicrisan"] [Black "Artik"] [Result "0-1"] [UTCDate "2021.11.23"] [UTCTime "15:45:13"] [WhiteElo "1469"] [BlackElo "1500"] [WhiteRatingDiff "-64"] [BlackRatingDiff "+160"] [Variant "Standard"] [TimeControl "420+0"] [ECO "C20"] [Opening "King's Pawn Game"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. e4 e5 { C20 King's Pawn Game } 2. Qe2? { (0.30 → -0.83) Mistake. Best move was Nf3. } (2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Nxe4 6. Re1 Nc5) 2... Nc6 3. Qa6?? { (-0.20 → -13.56) Blunder. Best move was Nf3. } (3. Nf3) 3... bxa6 4. Bxa6 Bxa6 5. Na3 Bc5 6. Nb5 Bxb5 7. d4 Bxd4 8. Be3 Bxb2 9. Rc1 Bxc1 10. Bxc1 Nd4 11. Ne2 Nxe2 12. f3 Nxc1 13. Kd2?! { (-37.56 → Mate in 7) Checkmate is now unavoidable. Best move was h4. } (13. h4 Nxa2) 13... Nxa2 14. Ra1 d5?! { (Mate in 3 → Mate in 8) Not the best checkmate sequence. Best move was Qg5+. } (14... Qg5+ 15. f4 Qxg2+ 16. Kd1 Qe2#) 15. Rxa2 dxe4+ 16. Kc1 exf3 17. Ra5 fxg2 18. Rxb5 g1=Q+?! { (Mate in 4 → Mate in 4) Not the best checkmate sequence. Best move was Qd4. } (18... Qd4 19. Rxe5+ Qxe5 20. Kb1 Rb8+ 21. Kc1 Qe1#) 19. Kb2 Qdd4+?! { (Mate in 4 → Mate in 4) Not the best checkmate sequence. Best move was Rb8. } (19... Rb8 20. Rxb8 Qxb8+ 21. Ka2 Qgb1+ 22. Ka3 Qa1#) 20. Ka3 Qc1+ 21. Rb2 Qcxb2# { Black wins by checkmate. } 0-1