The hardest game to win is a won game.
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[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Borisenkov"]
[Black "Mezenev"]
[Result "0-1"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "8/8/8/8/5k2/1p3pR1/bK5P/8 b - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1... f2 2. Rg8 Bb1 3. Kxb1 f1=Q+ { Black wins with a large material
advantage. } 0-1