Mate In 3 Puzzle (Rated 1446): Mate in 3 — Back Rank Mate

This chess endgame is a classic example of a forcing mating net where the king’s escape squares are stripped away and the rook becomes the main attacker. In classical chess, these patterns often appear when one side has active rooks, a vulnerable king, and a piece that can be used to drive the king into a mating corridor. The key idea is not material gain, but coordination: checks, limited king mobility, and a final rook-based finish.