[Event "BSI 2021 Championship Arena"] [Site "https://lichess.org/cUYCuhce"] [Date "2021.03.21"] [White "MarkBSI"] [Black "SonyaZ"] [Result "0-1"] [UTCDate "2021.03.21"] [UTCTime "15:47:09"] [WhiteElo "1638"] [BlackElo "1561"] [WhiteRatingDiff "-111"] [BlackRatingDiff "+7"] [Variant "Standard"] [TimeControl "600+0"] [ECO "A45"] [Opening "Indian Defense: Paleface Attack, Blackmar-Diemer Gambit Deferred"] [Termination "Normal"] [Annotator "lichess.org"] 1. d4 d5 2. f3?! { (0.22 → -0.67) Inaccuracy. Nf3 was best. } (2. Nf3 Nf6 3. c4 e6 4. Nc3 c6 5. Bg5 h6 6. Bxf6 Qxf6) 2... Nf6 3. e4 { A45 Indian Defense: Paleface Attack, Blackmar-Diemer Gambit Deferred } dxe4 4. fxe4 Nxe4 5. Bb5+?! { (-0.74 → -1.82) Inaccuracy. Nf3 was best. } (5. Nf3 g6 6. Bd3 Nd6 7. O-O Bg7 8. c3 Nd7 9. Bg5 h6) 5... Nc6? { (-1.82 → -0.63) Mistake. c6 was best. } (5... c6) 6. Qd3? { (-0.63 → -1.95) Mistake. Nf3 was best. } (6. Nf3 Nd6 7. a4 g6 8. c3 Bg7 9. Bf4 O-O 10. Nbd2 f6) 6... Bf5 7. h3? { (-2.37 → -4.25) Mistake. Ne2 was best. } (7. Ne2 Nd6) 7... a6? { (-4.25 → -2.18) Mistake. e6 was best. } (7... e6 8. Nf3 Qd6 9. Bxc6+ bxc6 10. O-O Ng3 11. Qc4 Nxf1 12. Qxf1 Be7 13. b3 O-O 14. Ba3) 8. Ba4?? { (-2.18 → -6.15) Blunder. Bxc6+ was best. } (8. Bxc6+ bxc6) 8... b5 9. Bxb5 axb5 10. Qxb5 e6?? { (-6.62 → 0.90) Blunder. Qd7 was best. } (10... Qd7 11. Ne2 Nd6 12. Qb3 Rb8 13. Qa4 Nb4 14. Qxd7+ Kxd7 15. Na3 Bxc2 16. O-O Bd3 17. Re1) 11. Qxc6+ Ke7 12. g4?? { (0.73 → -1.26) Blunder. Ne2 was best. } (12. Ne2 Rb8) 12... Bg6? { (-1.26 → 0.30) Mistake. Qxd4 was best. } (12... Qxd4 13. Qxc7+) 13. Bf4? { (0.30 → -1.24) Mistake. Ne2 was best. } (13. Ne2 Ra7 14. Nbc3 Qd6 15. Qc4 Qa6 16. Qxa6 Rxa6 17. Nf4 Nxc3 18. Nxg6+ hxg6 19. bxc3 e5) 13... Qxd4 14. Qxa8?? { (-1.27 → Mate in 2) Checkmate is now unavoidable. Qxc7+ was best. } (14. Qxc7+) 14... Qf2+ 15. Kd1 Qxf4?? { (Mate in 1 → -1.64) Lost forced checkmate sequence. Qf1# was best. } (15... Qf1#) 16. c3?? { (-1.64 → Mate in 5) Checkmate is now unavoidable. Ne2 was best. } (16. Ne2) 16... Nf2+ 17. Ke2 Nxh1?? { (Mate in 3 → -6.09) Lost forced checkmate sequence. Bd3+ was best. } (17... Bd3+ 18. Ke1 Qe3+ 19. Ne2 Qxe2#) 18. Qxh1 Qe5+ 19. Kf1? { (-4.83 → -8.63) Mistake. Kd1 was best. } (19. Kd1 h5) 19... Bd3+ 20. Ne2? { (-8.90 → Mate in 7) Checkmate is now unavoidable. Kf2 was best. } (20. Kf2 Qc5+ 21. Kg3 Qd6+ 22. Kf2 Qb6+ 23. Kg3 Qxb2 24. Qf3 Bxb1 25. Rxb1 Qxb1 26. Kg2 Qxa2+) 20... Qxe2+ 21. Kg1 Kd7 22. Na3 Bc5# { Black wins by checkmate. } 0-1