Modern Defense Mongredien Defense Trapped Piece in Chess

In the Modern Defense Mongredien Defense, a “trapped piece” motif occurs when one side’s piece is driven into a limited square set and can’t escape without losing material. A defining feature is the pawn structure and piece placement that restrict the trapped piece’s legal moves, often after a forcing sequence of checks, captures, or pawn breaks. For an intermediate player, it’s about recognizing when your opponent’s piece has no safe retreat squares and converting that restriction into a win.