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 "?"]
[Date "????.??.??"]
[Round "?"]
[White "Unknown"]
[Black "Unknown195"]
[Result "1-0"]
[Annotator "David Hayes"]
[BlackElo "0"]
[FEN "1rb3k1/1B3ppp/2P5/pP6/3P4/4P1P1/5PKP/8 w - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
1. Bxc8 ( { White can try: } 1. Ba6 Bxa6 2. bxa6 Kf8 3. d5 Ke7 4. e4 a4 5. e5 a3 6. d6+ Ke6 7. c7 Ra8 8. f4 a2 9. f5+ Kd7 10. e6+ fxe6 11. fxe6+ Kxd6 12. e7 Kxe7 13. a7 a1=Q { Black wins with a large material advantage. } ) 1... Rxc8 2. d5 Kf8 3. b6 Ke7 4. b7 Kd8 5. d6 a4 6. c7+ Kd7 7. b8=Q a3 8. Qb4 a2 9. Qg4+ Kxd6 10. Qxc8 a1=Q 11. Qd8+ Kc5 12. c8=Q+ Kb4 13. Qb6+ Ka3 14. Qca6# 1-0