The combination is the heart of chess.
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[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Unknown"]
[Black "Unknown279"]
[Result "1-0"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "R7/3k4/2p5/4PP1p/1p6/p2r2P1/5K1P/8 w - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1. e6+ Ke7 2. Ra7+ Kf6 3. Rf7+ ( { White can try: } 3. e7 Kf7 4. f6 Rd6 5. Ra8 Rxf6+ 6. Kg2 Kxe7 { Black wins with a large material advantage. } ) 3... Kg5 4. e7 Rd5 5. e8=Q { White wins with a large material advantage. } 1-0