In many French Defenses which can arise in a chess game after White opens by advancing his King Pawn two squares, it is Black who a can be left with a bad Queen Bishop.
In the following game which was played at the internet chess club, it was White’s c1 Bishop that was impotent. Black was able to sacrifice his Bishop at e1 in return for two connected Queen side pawns which was easily converted to a win.
Black’s move from the diagrammed chess board picture was Bishop captures White’s b4 Pawn. After axb4 and Kxb4, Black’s advanced King and super mobile passed a and b pawns overwhelmed the the chess player in charge of moving the White pieces.