... 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 "Unknown444"] [Result "1-0"] [Annotator "David Hayes"] [BlackElo "0"] [FEN "1r5k/2q2p1p/3p1P1Q/2p1b3/1p1n4/3P2r1/BPP3K1/R6R w - - 0 1"] [SetUp "1"] [TimeControl "0"] [WhiteElo "0"] 1. Kf2 ( { White can try: } 1. Kf1 Kg8 2. Bd5 ( 2. Qxh7+ Kf8 3. Qh8+ Rg8 4. Qh6+ Ke8 5. Qh7 Rg5 6. Bd5 Rf5+ 7. Kg2 Bxf6 8. Rae1+ Be5 { Black wins with a large material advantage. } ) 2... Bxf6 3. Qxf6 { With a likely draw. } ) 1... Rg2+ ( { Black dare not try: } 1... Rf3+ 2. Ke1 Nxc2+ 3. Kd1 Ne3+ 4. Kc1 Rf1+ 5. Rxf1 Nxf1 6. Qg7# ) 2. Kf1 ( { White dare not try: } 2. Kxg2 Qb7+ 3. Kg1 Rg8+ 4. Kf1 Qf3+ 5. Ke1 Qe2# ) 2... Kg8 3. Bd5 Rg4 4. Rh4 Rg3 5. Be4 Rg6 6. Qxh7+ Kf8 7. Bxg6 { White wins with a large material advantage. } 1-0