lichess dev

[Event "Open Arena"] [Site "http://chess-academy.net/LPxDofg1"] [Date "2021.03.01"] [Round "-"] [White "rdruta"] [Black "OlaruSofi"] [Result "0-1"] [UTCDate "2021.03.01"] [UTCTime "17:42:16"] [WhiteElo "1417"] [BlackElo "1418"] [WhiteRatingDiff "-13"] [BlackRatingDiff "+11"] [Variant "Standard"] [TimeControl "420+2"] [ECO "A00"] [Opening "Van't Kruijs Opening"] [Termination "Normal"] [Annotator "chess-academy.net"] 1. e3 { A00 Van't Kruijs Opening } e6 2. Qf3? { (0.34 → -0.82) Mistake. Best move was d4. } (2. d4 d5 3. c4 Nf6 4. Nf3 c5 5. Nc3 Nc6 6. Be2 cxd4) 2... Nf6 3. d4 d6?! { (-0.84 → -0.10) Inaccuracy. Best move was c5. } (3... c5) 4. d5? { (-0.10 → -2.37) Mistake. Best move was Nc3. } (4. Nc3 d5) 4... exd5 5. g4? { (-1.49 → -3.82) Mistake. Best move was b3. } (5. b3 c5 6. Bb2 Nc6 7. Nd2 Be7 8. Qd1 Be6 9. Bd3 O-O 10. Ne2 Ne5 11. Nf4 Nxd3+) 5... Bxg4 6. Qe2?? { (-3.36 → -10.96) Blunder. Best move was Qf4. } (6. Qf4 g6 7. Nc3 c6 8. Nge2 Nbd7 9. f3 Be6 10. Nd4 Nh5 11. Nxe6 fxe6 12. Qg4 Be7) 6... Bxe2 7. Bxe2 Qe7 8. c4 Qe4 9. cxd5 Qxh1 10. Bd3 Qxg1+ 11. Kd2 Qxf2+ 12. Kc3 Qe1+ 13. Kb3 Qxc1 14. e4 Na6 15. e5?! { (-38.19 → Mate in 4) Checkmate is now unavoidable. Best move was Nc3. } (15. Nc3 Nc5+) 15... Nxd5?! { (Mate in 4 → -38.37) Lost forced checkmate sequence. Best move was Nc5+. } (15... Nc5+ 16. Ka3 Nxd3 17. exf6 Qxb2+ 18. Ka4 Qb4#) 16. exd6?! { (-38.37 → Mate in 5) Checkmate is now unavoidable. Best move was Nc3. } (16. Nc3 Nc5+) 16... Nc5+ 17. Ka3 Nxd3 18. Nc3 Qxb2+ 19. Ka4 Qxa1?! { (Mate in 1 → Mate in 4) Not the best checkmate sequence. Best move was Qb4#. } (19... Qb4#) 20. Nxd5 Qxa2+ 21. Kb5 Qxd5+?! { (Mate in 1 → Mate in 2) Not the best checkmate sequence. Best move was a6#. } (21... a6#) 22. Ka4 Qxd6?! { (Mate in 2 → Mate in 4) Not the best checkmate sequence. Best move was Qc4+. } (22... Qc4+ 23. Ka5 b6#) 23. Kb3 Qxh2 24. Kc3 Qg3?! { (Mate in 3 → Mate in 4) Not the best checkmate sequence. Best move was O-O-O. } (24... O-O-O 25. Kc4 Qa2+ 26. Kc3 Bb4#) 25. Kd2 O-O-O 26. Kc2 Nb4+ 27. Kb2 Rd2+ 28. Kc1 Qe1# { Black wins by checkmate. } 0-1