[Event "Casual correspondence game"] [Site "https://lichess.org/LOwqh5KT"] [Date "2022.06.12"] [White "songheng123456789"] [Black "lichess AI level 4"] [Result "0-1"] [UTCDate "2022.06.12"] [UTCTime "05:13:54"] [WhiteElo "1311"] [BlackElo "?"] [Variant "Standard"] [TimeControl "-"] [ECO "B20"] [Opening "Sicilian Defense: Kronberger Variation"] [Termination "Normal"] [Annotator "lichess.org"] 1. e4 c5 2. Na3 { B20 Sicilian Defense: Kronberger Variation } d6 3. c3 Nf6 4. f3 Nc6 5. b4?? { (0.12 → -2.18) Blunder. d4 was best. } (5. d4 e6 6. Be3 Be7 7. Bd3 a6 8. Ne2 b5 9. O-O O-O 10. Qd2 b4 11. Nc2 a5) 5... cxb4 6. cxb4 a6? { (-2.43 → -0.90) Mistake. e5 was best. } (6... e5 7. b5) 7. Nc2? { (-0.90 → -2.19) Mistake. d4 was best. } (7. d4 Qb6) 7... Nd7?? { (-2.19 → 0.20) Blunder. d5 was best. } (7... d5 8. b5 axb5 9. Bxb5 dxe4 10. fxe4 e5 11. a4 Bc5 12. Nf3 O-O 13. Qe2 Nh5 14. g3) 8. Ne2?! { (0.20 → -0.36) Inaccuracy. d4 was best. } (8. d4 e6 9. a3 Be7 10. f4 Nf6 11. Bd3 d5 12. e5 Ne4 13. Ne2 f5 14. O-O Bd7) 8... g6 9. Nf4 b5?! { (-0.56 → 0.21) Inaccuracy. Bg7 was best. } (9... Bg7 10. d4) 10. Rb1? { (0.21 → -1.15) Mistake. a4 was best. } (10. a4) 10... e5 11. Nd3?! { (-1.00 → -2.11) Inaccuracy. Nd5 was best. } (11. Nd5 Nb6) 11... Bb7?! { (-2.11 → -1.10) Inaccuracy. Nb6 was best. } (11... Nb6 12. a3 Be6 13. Be2 Rc8 14. O-O Na4 15. Ne3 Nd4 16. f4 Ba2 17. Ra1 Bb3 18. Qe1) 12. Bb2 Qb6 13. a3 Rd8 14. g4?! { (-0.96 → -1.79) Inaccuracy. a4 was best. } (14. a4 Bg7) 14... Rc8?! { (-1.79 → -1.03) Inaccuracy. Bg7 was best. } (14... Bg7 15. Bg2 O-O 16. Rc1 Rfe8 17. Ne3 Nd4 18. O-O Nf6 19. Bxd4 Qxd4 20. Qb3 Rc8 21. h4) 15. f4?! { (-1.03 → -2.03) Inaccuracy. h4 was best. } (15. h4 Qd8 16. f4 Bg7 17. Bg2 Nb6 18. g5 Nc4 19. Ba1 O-O 20. O-O h6 21. Ne3 hxg5) 15... Bg7 16. fxe5? { (-1.58 → -3.60) Mistake. Bg2 was best. } (16. Bg2 O-O 17. f5 Ne7 18. Ne3 Bh6 19. O-O gxf5 20. gxf5 Kh8 21. Kh1 Bxe3 22. dxe3 Rg8) 16... Ndxe5 17. Qe2?! { (-3.37 → -5.04) Inaccuracy. Nf2 was best. } (17. Nf2 d5) 17... Ne7?? { (-5.04 → -2.35) Blunder. Nxd3+ was best. } (17... Nxd3+ 18. Qxd3 Bxb2 19. Rxb2 Ne5 20. Qe2 O-O 21. Bg2 Rfe8 22. d4 Nc4 23. Rb3 Bxe4 24. Bxe4) 18. h3?? { (-2.35 → -8.28) Blunder. Bxe5 was best. } (18. Bxe5 Bxe5 19. Rc1 O-O 20. Bg2 Bg7 21. Qf2 Qd8 22. O-O Rc4 23. Ne3 Rd4 24. Nf4 Bxe4) 18... Rxc2 19. Bd4 Nf3+ 20. Qxf3 Qxd4 21. Nf2? { (-9.76 → Mate in 1) Checkmate is now unavoidable. Bg2 was best. } (21. Bg2 Nc6 22. Rd1 O-O 23. Qg3 Be5 24. Qf3 Bc8 25. Rc1 Rxc1+ 26. Nxc1 Qc4 27. Ne2 Nd4) 21... Qxd2# { Black wins by checkmate. } 0-1