Pin Puzzle (Rated 735): Use a Pin — Defense
A pin can look powerful, but its value depends on whether the pinned piece is truly unable to move. In this position, Black must respond to White’s active bishop and the pressure it creates against the king. A well-timed defensive move develops a piece, challenges the attacker’s influence, and reduces the tactical danger. The key idea is to meet a pin with coordination rather than passivity, while keeping both kings safe in the opening-to-middlegame transition.