... 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 "Unknown194"]
[Result "0-1"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "3r2k1/pp2rpb1/2b2qpp/2Q1P3/5P2/P1P5/1P1NN1P1/R4RK1 b - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1... Rxd2 ( { Black can try: } 1... Qh4 2. Nf3 Bxf3 3. Rxf3 Red7 4. Nd4 { White has a winning advantage. } ) ( { Black can also try: } 1... Qe6 2. Nd4 Qd5 3. Ne4 Qxe4 4. Nxc6 Qxc6 5. Qxe7 Rd2 6. Rf3 { White wins with a large
material advantage. } ) 2. exf6 Rexe2 3. Rf2 Rxf2 4. Qxf2 Rxf2 5. Kxf2 Bxf6 { Black wins with a large material advantage. } 0-1