Victory goes to the player who makes the next-to-last mistake.
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[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Unknown"]
[Black "Unknown012"]
[Result "1-0"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "8/8/5P2/3p2R1/8/4k3/1r6/4K3 w - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1. Re5+ ( 1. Rg3+ Ke4 2. f7 { If white's king abandons the f-file, then black
will get behind white's past pawn. Otherwise, the checks are endless. } 2... Rb1+ 3. Kf2 Rb2+ 4. Kg1 Rb1+ 5. Kg2 Rb2+ 6. Kf1 Rb1+ 7. Ke2 Rb2+ 8. Ke1 Rb1+ { Draw. } ) 1... Kd4 2. f7 Kxe5 ( { Black can try: } 2... Rb1+ 3. Ke2 Rb2+ 4. Kf3 Rb3+ 5. Kg4 Kxe5 6. f8=Q { White wins with a large material advantage. } ) 3. f8=Q { White wins with a large material advantage. } 1-0