[Event "Casual correspondence game"] [Site "https://lichess.org/MgOKjOrD"] [Date "2023.07.13"] [White "ChengYouSeng"] [Black "lichess AI level 5"] [Result "0-1"] [UTCDate "2023.07.13"] [UTCTime "09:26:22"] [WhiteElo "1500"] [BlackElo "?"] [Variant "Standard"] [TimeControl "-"] [ECO "C25"] [Opening "Vienna Game: Omaha Gambit"] [Termination "Normal"] [Annotator "lichess.org"] 1. e4 e5 2. f4?! { (0.35 → -0.71) Inaccuracy. Nf3 was best. } (2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. Re1 Nd6 6. Nxe5 Be7) 2... d6?! { (-0.71 → 0.31) Inaccuracy. exf4 was best. } (2... exf4 3. Nf3 g5 4. h4 g4 5. Ne5 d6 6. Nxg4 Be7 7. Nf2) 3. Nc3 { C25 Vienna Game: Omaha Gambit } exf4 4. Nf3?! { (0.00 → -0.90) Inaccuracy. Qf3 was best. } (4. Qf3 Nc6 5. Qxf4 Nb4 6. Kd1 Nf6 7. Nf3 c5 8. Bb5+ Bd7) 4... g5 5. d3 g4 6. Nd4?? { (-0.49 → -4.01) Blunder. Ng1 was best. } (6. Ng1 Qh4+ 7. Ke2 Nc6 8. Bxf4 Be6 9. Qd2 Nge7 10. Kd1 O-O-O) 6... Bh6?? { (-4.01 → -0.25) Blunder. Qh4+ was best. } (6... Qh4+ 7. g3) 7. Nf5?? { (-0.25 → -3.25) Blunder. Nde2 was best. } (7. Nde2 f3 8. Ng3 Bxc1 9. Qxc1 h5 10. gxf3 gxf3 11. Rg1 Qh4 12. Qe3 Ne7 13. O-O-O Bg4) 7... Bxf5 8. exf5 f3?? { (-3.38 → -0.94) Blunder. Qh4+ was best. } (8... Qh4+) 9. gxf3?? { (-0.94 → -4.98) Blunder. h4 was best. } (9. h4) 9... Qh4+ 10. Ke2 Nc6 11. Nd5?? { (-4.42 → Mate in 1) Checkmate is now unavoidable. Qe1 was best. } (11. Qe1 Nd4+ 12. Kd1+ Qxe1+ 13. Kxe1 Nxc2+ 14. Kd1 Nxa1 15. fxg4 Bxc1 16. Kxc1 h6 17. Kd2 c6) 11... Nd4# { Black wins by checkmate. } 0-1