[Event "SUNDAY SPECIAL 1st Challenge"] [Site "https://lichess.org/IV6QQf3P"] [Date "2022.04.03"] [White "Bipranko"] [Black "Sayantangupta2012"] [Result "0-1"] [UTCDate "2022.04.03"] [UTCTime "12:33:28"] [WhiteElo "1061"] [BlackElo "1386"] [WhiteRatingDiff "-2"] [BlackRatingDiff "+11"] [Variant "Standard"] [TimeControl "600+0"] [ECO "A00"] [Opening "Van't Kruijs Opening"] [Termination "Normal"] [Annotator "lichess.org"] 1. e3 { A00 Van't Kruijs Opening } e5 2. c3?! { (0.21 → -0.44) Inaccuracy. d4 was best. } (2. d4 exd4 3. exd4 d5 4. Nf3 Nf6 5. Bd3 Bd6 6. Qe2+ Be6) 2... d5 3. d4 f6? { (-0.44 → 0.89) Mistake. Nc6 was best. } (3... Nc6 4. Nf3 e4 5. Nfd2 f5 6. c4 Nf6 7. Nc3 Be6 8. a3) 4. Nf3?! { (0.89 → -0.17) Inaccuracy. dxe5 was best. } (4. dxe5 Nc6 5. Bb5 Bf5 6. Nf3 fxe5 7. c4 a6 8. Bxc6+ bxc6) 4... e4 5. Nfd2 f5 6. Be2 h6?? { (-0.70 → 1.38) Blunder. Nf6 was best. } (6... Nf6 7. b4 Bd6 8. b5 a6 9. c4 axb5 10. cxb5 c6 11. Nc3 O-O 12. a4 Qe8 13. bxc6) 7. Na3?? { (1.38 → -0.59) Blunder. Bh5+ was best. } (7. Bh5+ Ke7 8. c4 Nf6 9. cxd5 Nxh5 10. Qxh5 Qxd5 11. O-O Qf7 12. Qd1 Ke8 13. f3 exf3) 7... Bxa3?! { (-0.59 → -0.03) Inaccuracy. Be7 was best. } (7... Be7 8. O-O Nf6 9. Nc2 c6 10. b4 Na6 11. b5 cxb5 12. Bxb5+ Bd7 13. Rb1 Rc8 14. c4) 8. bxa3 Nf6 9. Bb5+?! { (-0.11 → -1.09) Inaccuracy. a4 was best. } (9. a4) 9... c6?! { (-1.09 → -0.22) Inaccuracy. Nc6 was best. } (9... Nc6) 10. Be2 O-O 11. O-O b5?! { (-0.43 → 0.26) Inaccuracy. Rf7 was best. } (11... Rf7 12. c4 Nbd7 13. a4 Nf8 14. Qe1 Be6 15. cxd5 Nxd5 16. Nc4 Ng6 17. f4 exf3 18. Bxf3) 12. Re1?! { (0.26 → -0.60) Inaccuracy. a4 was best. } (12. a4 a6 13. axb5 axb5 14. a4 Re8 15. Re1 Be6 16. Bb2 bxa4 17. Rxa4 Nbd7 18. Qa1 Rxa4) 12... Na6?! { (-0.60 → 0.35) Inaccuracy. Rf7 was best. } (12... Rf7 13. a4 a6 14. Bb2 Rfa7 15. Ba3 Nbd7 16. Nb3 Nb6 17. Bc5 Rf7 18. Bxb6 Qxb6 19. Qd2) 13. g4?? { (0.35 → -6.17) Blunder. a4 was best. } (13. a4) 13... fxg4 14. Bxg4? { (-5.07 → -12.38) Mistake. a4 was best. } (14. a4 b4) 14... Bxg4 15. h3 Bxd1 16. Rxd1 Nh5 17. Kh2?! { (-17.13 → Mate in 5) Checkmate is now unavoidable. Rf1 was best. } (17. Rf1 Qg5+) 17... Qc7+?! { (Mate in 5 → -26.88) Lost forced checkmate sequence. Qh4 was best. } (17... Qh4 18. Nf1 Qxf2+ 19. Kh1 Rf3 20. Rd2 Qxf1+ 21. Kh2 Rxh3#) 18. Kh1?! { (-26.88 → Mate in 5) Checkmate is now unavoidable. Kg1 was best. } (18. Kg1 Rxf2) 18... Rxf2 19. Nf1 Ng3+ 20. Kg1 Nxf1 21. Kxf2 Rf8+ 22. Ke1 Qg3+ 23. Ke2 Qf2# { Black wins by checkmate. } 0-1