Rustam Kasimdzhanov (White) Puzzle: Unpin — Win Material

Unpinning is a powerful tactical idea that turns a restricted piece into an active attacker. In this chess endgame, a knight appears tied to the defense of a rook, but that restriction is misleading. Moving the knight with tempo creates a discovered attack and exposes the opponent’s rook. The key concept is to recognize when a pin can be broken safely, especially when the unpinning move also gives check or creates a second threat.