Bogo Indian Defense Trapped Piece in Chess

In the bogo indian defense, a “trapped piece” motif happens when a defender’s piece is forced into a square where it can’t retreat safely. A typical defining feature is the Bogo move order with ...Bb4+ (or ...Bb4) that pins or provokes concessions, after which tactics like ...Bxc3 or ...Bxd2 can leave the piece short of escape squares.