Nowadays, when you're not a grandmaster at 14, you can forget about it.
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[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "White player"]
[Black "Black player"]
[Result "*"]
[BlackElo "0"]
[FEN "7r/7P/8/3k4/8/4K3/8/7R w - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
{ Rook Behind Own Pawn|White plans to elbow out the black king from double
attacking and winning the pawn.|Black plans to race white for the pawn. } 1. Kf4 Ke6 2. Kg5 Kf7 3. Kh6 { White has now freed his rook from protection duty
for other duty. } 3... Kf6 4. Rg1 ( { Just about any white rook move will win. } 4. Rf1+ Ke6 5. Kg7 Ra8 6. h8=Q Rxh8 7. Kxh8 { White wins with a large material
advantage. } ) 4... Kf7 5. Rg7+ Kf6 ( { Black can try: } 5... Kf8 6. Rb7 Ke8 7. Rb8+ Kd7 8. Rxh8 { White wins with a large material advantage. } ) 6. Rg8 Rxg8 7. hxg8=Q { White wins with a large material advantage. } *