Some sacrifices are sound; the rest are mine.
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[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Unknown"]
[Black "Unknown217"]
[Result "0-1"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "4RK2/4P3/4k3/6p1/8/8/8/4r3 b - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1... Kf6 ( { Black can try: } 1... Rf1+ 2. Kg7 Rf7+ 3. Kg6 g4 4. Kg5 g3 5. Ra8 Rg7+ 6. Kh6 Rxe7 7. Rg8 Rb7 8. Rxg3 { Draw. } ) 2. Ra8 Rxe7 3. Ra6+ Re6 { Black wins with a large material advantage. } 0-1