Barnes Defense Puzzle (Rated 880): Win Material — Pin Tactic
This middlegame puzzle shows how a well-placed bishop can create a powerful pin against the enemy queen and king. When a queen is tied to the king, it often becomes vulnerable to a tactical sequence that wins material or forces simplification on favorable terms. The key idea is not just attacking a piece, but exploiting the alignment of king, queen, and bishop to create a decisive advantage. In classical chess, these motifs often decide the game quickly.