... 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 "Unknown"]
[Black "Unknown449"]
[Result "1-0"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "r3k2r/p1R2pp1/1p2p3/3bQ3/1P1p2qp/3P2P1/P4P1P/4R1K1 w kq - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1. Qd6 ( { White can try: } 1. Qxd5 O-O 2. Qe4 Qxe4 3. Rxe4 h3 4. Rxd4 Rfc8 { With a likely draw. } ) 1... Qg5 2. Qd7+ Kf8 3. Qxf7# 1-0