One bad move nullifies forty good ones.
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[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Unknown"]
[Black "Unknown392"]
[Result "1-0"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "6r1/pkpp2r1/4p2p/R3Qp2/1P1P1p2/2q2P2/5RPP/6K1 w - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1. Rxa7+ ( { White dare not try: } 1. Rfa2 Qc1+ 2. Kf2 Rxg2# ) 1... Kxa7 2. Ra2+ Kb6 3. Qa5+ Kc6 4. b5+ Kd6 5. Qxc3 { White wins with a large material advantage. } 1-0