Maksim Chigaev (Black) Puzzle: Checkmate — Mating Net

A mating net is a coordinated attack in which the defending king has no safe escape squares and every possible defense fails. In this chess endgame-style tactical position, White appears badly behind in material, yet the exposed black king and active rook create an immediate forced-mate opportunity. The important lesson is that material counts only when the king is safe enough to use it. When checks restrict a king’s movement, attacking pieces can turn a narrow file into a decisive route to checkmate.