... if your King is under attack you don't worry about losing a Pawn on the Queen's side.
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[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "White player"]
[Black "Black player"]
[Result "*"]
[BlackElo "0"]
[FEN "8/7k/8/8/8/3P4/8/6K1 w - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
{ Leadership.|White to move and win. } 1. Kf2 { A king and pawn race would
end in a draw. So the white king advances to lead his pawn to promotion. } 1... Kg6 { The black king moves to block the White king from reaching the sixth rank
ahead of his pawn. } 2. Ke3 Kf6 3. Kd4 Ke6 4. Kc5 Kd7 5. Kd5 { White seizes the
opposition to force black to abandon his blockade of the sixth rank. } 5... Kc7 6. Ke6 { White can now force his pawn to promotion. } 6... Kc6 7. d4 Kc7 8. d5 Kd8 9. Kd6 Kc8 10. Ke7 Kc7 11. d6+ Kc6 12. d7 Kc5 13. d8=Q { White wins with a large
material advantage. } *