[Event "Casual Game"] [Site "https://lichess.org"] [Date "13/08/2020, 14:30:36"] [White "White"] [Black "Black"] [Result "0-1"] [WhiteElo "?"] [BlackElo "?"] [Variant "Standard"] [TimeControl "-"] [ECO "A00"] [Opening "Anderssen's Opening"] [Termination "Normal"] [Annotator "lichess.org"] 1. a3 { A00 Anderssen's Opening } e5 2. b3 Bc5 3. a4?? { (0.15 → -2.55) Blunder. Bb2 was best. } (3. Bb2 Nf6 4. e3 d6 5. d3 Bb6 6. Nd2 c6 7. Be2 O-O) 3... Qf6? { (-2.55 → -0.83) Mistake. Bxf2+ was best. } (3... Bxf2+ 4. Kxf2) 4. b4?? { (-0.83 → Mate in 1) Checkmate is now unavoidable. e3 was best. } (4. e3 d5 5. Qf3 Qe6 6. Qg3 Nf6 7. Nf3 Nc6 8. Bb5 Bd6 9. Ba3 O-O 10. Bxd6 cxd6) 4... Qxf2# { Black wins by checkmate. } 0-1