Grand Prix Attack Puzzle (Rated 1376): Pin — Win Material

A pin becomes powerful when a valuable piece is aligned with the king behind it. In this middlegame, White uses active bishops and queen pressure against a king still exposed in the center. The key tactical idea is to attack a queen while making it unable to move freely, transforming a defensive problem into a winning combination. Even though Black has a material advantage, king safety and piece coordination give White the initiative and a decisive material gain.