Learn How to Crush a Pin: Discovered Attack
This middlegame puzzle shows how a pinned piece can become the target of a forcing tactical sequence. White’s king is still in the center, and Black’s active pieces are lined up to exploit that vulnerability. The key idea is to use a discovered attack and check to drag the king or a defender into a worse square, then win a major piece with tempo. In classical chess, these motifs often appear when development is ahead and the opponent’s queen or rook is overworked.