[Event "Casual correspondence game"] [Site "https://lichess.org/CWDGBYph"] [Date "2023.04.06"] [White "lichess AI level 4"] [Black "Ershov_BY"] [Result "0-1"] [UTCDate "2023.04.06"] [UTCTime "18:16:04"] [WhiteElo "?"] [BlackElo "1500"] [Variant "Standard"] [TimeControl "-"] [ECO "A04"] [Opening "Zukertort Opening: Queen's Gambit Invitation"] [Termination "Normal"] [Annotator "lichess.org"] 1. Nf3 e6 { A04 Zukertort Opening: Queen's Gambit Invitation } 2. e3 d5 3. c4 Bd6 4. d4 c6 5. Bd3 Nf6 6. O-O O-O 7. b3 Nbd7 8. c5 Bc7 9. b4? { (0.09 → -1.05) Mistake. Bb2 was best. } (9. Bb2 b6 10. b4 a5 11. b5 bxc5 12. bxc6 Nb8 13. dxc5 Nxc6 14. Nc3 Rb8 15. Nb5 e5) 9... Ne4?! { (-1.05 → 0.00) Inaccuracy. e5 was best. } (9... e5 10. Be2) 10. Nbd2 f5 11. Qc2 Ndf6? { (-0.43 → 0.78) Mistake. g5 was best. } (11... g5) 12. Nb3 Bd7 13. h3? { (0.55 → -0.72) Mistake. Ne5 was best. } (13. Ne5) 13... Be8 14. Rb1 Bh5?! { (-1.14 → -0.58) Inaccuracy. g5 was best. } (14... g5) 15. Na5?? { (-0.58 → -4.01) Blunder. Ne5 was best. } (15. Ne5 g5 16. g3 a6 17. Na5 Rb8 18. Kg2 Qe7 19. f3 Bxf3+ 20. Rxf3 g4 21. hxg4 Bxe5) 15... Bxf3 16. Nxb7 Qe8 17. gxf3 Ng5?! { (-4.82 → -3.81) Inaccuracy. Qg6+ was best. } (17... Qg6+ 18. Kh1 Qh5 19. f4 Qxh3+ 20. Kg1 Qg4+ 21. Kh1 Ng5 22. f3 Nxf3 23. Rxf3 Qxf3+ 24. Qg2) 18. Be2? { (-3.81 → -6.68) Mistake. f4 was best. } (18. f4 Nxh3+ 19. Kg2 Ne4 20. Rh1 Nhxf2 21. Bxe4 Nxe4 22. Rh2 Rb8 23. Na5 Bxa5 24. bxa5 Qg6+) 18... Nxh3+ 19. Kg2?? { (-6.76 → Mate in 14) Checkmate is now unavoidable. Kh1 was best. } (19. Kh1 Qh5 20. f4 Qh4 21. Kg2 Ne4 22. Bh5 Qxh5 23. Rh1 Qg4+ 24. Kf1 Qf3 25. Rh2 Nhxf2) 19... Qg6+ 20. Kxh3 Qh5+ 21. Kg2 Qg5+ 22. Kh3 Qh5+ 23. Kg2 Qh2# { Black wins by checkmate. } 0-1