Mate In 3 Puzzle (Rated 1117): Mate in 3 — Back Rank Mate

This chess puzzle is a classic middlegame tactical finish built around king safety and a forcing mating net. Even when one side is materially ahead, active rooks and a vulnerable king can override the static evaluation. The key idea is to use forcing checks to drag the king into a cramped line of defense, then exploit the lack of escape squares. In classical chess, these patterns often appear when heavy pieces coordinate against a weakened back rank.