Do you realize Fischer almost never has any bad pieces? He exchanges them, and the bad pieces remain with his opponents.
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[Event "rated untimed match"]
[Site "Nice"]
[Date "2006.??.??"]
[Round "?"]
[White "Kramnik, Vlad"]
[Black "Anand, Vishy"]
[Result "0-1"]
[BlackElo "0"]
[FEN "7r/1b5r/1Qp2qk1/1PPp4/P4Pp1/8/2R2PB1/2R3K1 b - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1... Qxf4 2. bxc6 Qf3 3. cxb7+ ( { White can try: } 3. Bxf3 gxf3 4. cxb7+ Kf5 5. b8=Q Rh1# ) 3... Kf5 4. b8=Q Rh1+ 5. Bxh1 Qxh1# 0-1