Learn How to Win Material: Trapped Piece
This middlegame puzzle from the Accelerated London System shows how a well-placed knight can create a decisive material gain by exploiting a trapped piece and loose coordination. White’s active pieces and king-side pressure force Black into a tactical bind, where the queen, bishop, and rook become vulnerable to a sequence of forcing moves. The key idea is not a direct checkmate, but a winning combination that converts activity into material.