[Event "43rd Classical Event of CA"] [Site "https://lichess.org/IU4JNtof"] [Date "2023.10.22"] [White "Ulya08"] [Black "Sahist4"] [Result "0-1"] [UTCDate "2023.10.22"] [UTCTime "08:04:01"] [WhiteElo "1611"] [BlackElo "1608"] [WhiteRatingDiff "-8"] [BlackRatingDiff "+65"] [Variant "Standard"] [TimeControl "1200+15"] [ECO "A43"] [Opening "Benoni Defense: Old Benoni"] [Termination "Normal"] [Annotator "lichess.org"] 1. d4 c5?! { (0.00 → 0.98) Inaccuracy. Nf6 was best. } { A43 Benoni Defense: Old Benoni } (1... Nf6 2. c4 e6 3. Nf3 d5 4. cxd5 exd5 5. Bf4 c6 6. Nc3) 2. Bf4?? { (0.98 → -0.70) Blunder. d5 was best. } (2. d5 Nf6 3. Nc3 d6 4. e4 e6 5. Bc4 Be7 6. Nge2 exd5) 2... cxd4 3. Qxd4 Nc6 4. Qd1 g6?! { (-1.34 → -0.50) Inaccuracy. e5 was best. } (4... e5 5. Bg3 h5 6. h3 Qb6 7. Nd2 Qxb2 8. Ngf3 Bb4 9. Rb1) 5. Qd2?! { (-0.50 → -1.30) Inaccuracy. e4 was best. } (5. e4 Bg7 6. Nc3 Bxc3+ 7. bxc3 Nf6 8. Bd3 d5 9. e5 Nh5) 5... Bg7?! { (-1.30 → -0.41) Inaccuracy. e5 was best. } (5... e5 6. Bg3 d5 7. e4 Be6 8. exd5 Bh6 9. f4 Bxd5 10. Nc3 exf4 11. Qxd5 fxg3 12. hxg3) 6. Nc3 Qb6 7. O-O-O Qxf2?? { (-0.64 → 1.59) Blunder. Nf6 was best. } (7... Nf6 8. Be3 Ne4 9. Bxb6 Nxd2 10. Nd5 axb6 11. Nc7+ Kd8 12. Nxa8) 8. Nf3?! { (1.59 → 0.55) Inaccuracy. Nd5 was best. } (8. Nd5 Kf8 9. Nf3 Qc5 10. e4 Qa5 11. Qxa5 Nxa5 12. Nc7 Rb8 13. b4 Nc6 14. b5 Nd8) 8... Qb6 9. e3?? { (0.49 → -1.70) Blunder. e4 was best. } (9. e4 Qa5 10. e5 f6 11. Nd5 Qxa2 12. Qc3 fxe5 13. Nc7+ Kf8 14. Be3 e4 15. Nd4 Rb8) 9... d6 10. Nb5?! { (-1.25 → -2.23) Inaccuracy. e4 was best. } (10. e4 Nf6 11. Bc4 O-O 12. Bb3 Be6 13. Bh6 Bxb3 14. Bxg7 Kxg7 15. cxb3 Rac8 16. Kb1 Ne5) 10... a6 11. Na3?? { (-2.31 → Mate in 1) Checkmate is now unavoidable. Nc3 was best. } (11. Nc3 Nf6) 11... Qxb2# { Black wins by checkmate. } 0-1