Do you realize Fischer almost never has any bad pieces? He exchanges them, and the bad pieces remain with his opponents.
If you are reading this instead of viewing a chess puzzle or game, then you must enable JavaScript on this website.
[Event "rated untimed match"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "Max Pavey"]
[Black "Sidney Bernstein"]
[Result "0-1"]
[BlackElo "0"]
[FEN "5k2/1R5p/4p3/5p2/P7/2pNP3/bp2KPPP/8 b - - 0 1"]
[SetUp "1"]
[TimeControl "0"]
[WhiteElo "0"]
{ The immediate promotion loses because of white's many pawns. } 1... Bc4 ( 1... b1=Q 2. Rxb1 Bxb1 3. a5 Ba2 4. a6 Bd5 5. f3 Ba8 6. Nb4 Ke7 7. Kd3 c2 8. Kxc2 Kd6 9. Kc3 Kc5 10. Nd3+ Kb6 11. Kd4 Kxa6 12. Ke5 Kb5 13. Kxe6 Bb7 14. Kxf5 Kc4 15. Nf4 Bc8+ 16. Kf6 Bb7 17. e4 Bc6 18. e5 Be8 19. e6 Kd4 20. e7 Ke3 21. Nd5+ Kf2 22. Nc7 Bg6 23. f4 Kxg2 24. f5 Bh5 25. e8=Q Bxe8 26. Nxe8 Kxh2 27. Kg5 Kg3 28. f6 { White will promote and win. } ) 2. Rb4 c2 3. Rxc4 b1=Q 4. Kd2 Qd1+ 5. Kc3 c1=Q+ 6. Nxc1 Qxc1+ { Black wins with a large material
advantage. } 0-1