lichess dev

[Event "Open Arena"] [Site "http://chess-academy.net/pXCA6vsl"] [Date "2020.10.29"] [Round "-"] [White "BadalauDaria"] [Black "SergeyVoronChess"] [Result "0-1"] [UTCDate "2020.10.29"] [UTCTime "17:47:47"] [WhiteElo "1146"] [BlackElo "1624"] [WhiteRatingDiff "-5"] [BlackRatingDiff "+20"] [Variant "Standard"] [TimeControl "420+2"] [ECO "D00"] [Opening "Queen's Pawn Game"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. d4 d5 { D00 Queen's Pawn Game } 2. f4? { (0.53 → -0.88) Mistake. Best move was c4. } (2. c4 e6 3. Nf3 Nf6 4. Nc3 Bb4 5. e3 O-O 6. Be2 Nbd7) 2... c6? { (-0.88 → 0.19) Mistake. Best move was c5. } (2... c5 3. e3 cxd4 4. exd4 Nc6 5. Nf3 Bf5 6. Bd3 g6 7. Bxf5 gxf5 8. c4 Nf6 9. c5) 3. b4? { (0.19 → -1.16) Mistake. Best move was e3. } (3. e3) 3... Nf6 4. Qd3? { (-0.71 → -2.03) Mistake. Best move was e3. } (4. e3 Bf5 5. Bd3 e6 6. a3 a5 7. bxa5 Qxa5+ 8. Bd2 Qc7 9. Nf3 Be7 10. O-O Nbd7) 4... a5?! { (-2.03 → -1.44) Inaccuracy. Best move was Bg4. } (4... Bg4 5. h3) 5. bxa5 Rxa5? { (-1.93 → -0.87) Mistake. Best move was g6. } (5... g6 6. Nf3) 6. Qc3? { (-0.87 → -2.90) Mistake. Best move was Nf3. } (6. Nf3 g6 7. e3 Bg7 8. Bd2 Ra8 9. c4 O-O 10. cxd5 cxd5 11. Qc2 Nc6 12. Nc3 Bf5) 6... b5? { (-2.90 → -1.06) Mistake. Best move was Ne4. } (6... Ne4 7. Qb3) 7. Qxa5?? { (-1.06 → -9.19) Blunder. Best move was Nf3. } (7. Nf3 Ne4 8. Qb2 Bf5 9. e3 e6 10. Be2 Be7 11. Nbd2 O-O 12. O-O Nd7 13. Nxe4 Bxe4) 7... Qxa5+ 8. Bd2 Qb6?! { (-9.10 → -8.25) Inaccuracy. Best move was Qa4. } (8... Qa4 9. e3 Qxc2 10. Nc3 b4 11. Rc1 Qb2 12. Rb1 Qa3 13. Rb3 Qa5 14. Nd1 e6 15. Rb2) 9. c3? { (-8.25 → -9.84) Mistake. Best move was e3. } (9. e3 b4 10. Bd3 e6 11. a3 bxa3 12. Nc3 Bb4 13. Nge2 Qa5 14. O-O O-O 15. h3 c5) 9... Ne4? { (-9.84 → -8.77) Mistake. Best move was b4. } (9... b4 10. cxb4 Qxd4 11. Nc3 Ne4 12. Nf3 Qf2+ 13. Kd1 Qa7 14. Be1 e5 15. a4 Bxb4 16. Nxe4) 10. c4? { (-8.77 → -23.22) Mistake. Best move was a3. } (10. a3 Qa5) 10... Nxd2 11. Nxd2 bxc4 12. Nxc4 dxc4 13. O-O-O e6 14. Kd2 Bb4+ 15. Ke3 O-O 16. Rb1 Rd8 17. Ra1?! { (-13.78 → Mate in 7) Checkmate is now unavoidable. Best move was Nf3. } (17. Nf3) 17... Qxd4+ 18. Kf3 Bb7?! { (Mate in 12 → -22.37) Lost forced checkmate sequence. Best move was Qxa1. } (18... Qxa1) 19. e3 c5+ 20. Kf2 Qxa1 21. Ke2?! { (-30.34 → Mate in 1) Checkmate is now unavoidable. Best move was Nf3. } (21. Nf3 c3) 21... Rd2# { Black wins by checkmate. } 0-1