Learn How to Spot Mate in 2: Back Rank Mate
This chess endgame is a classic mating net built around rook activity and king restriction. The key idea is to force the defending king into a position where its own pieces and the board edge limit escape squares. In practical classical chess, these patterns often appear when a rook can give check on the back rank while another piece controls the only flight square. The position also shows how a hanging piece can become irrelevant once the mating sequence starts.