Mate In 3 Puzzle (Rated 1153): Mate in 3 — Chess Endgame Pattern

This chess endgame puzzle is a classic forcing sequence where king safety matters more than material. White already has a major material edge, but the real lesson is how a queen and rook can coordinate to trap the enemy king with checks, tempo, and a final mating net. In classical chess, these patterns often appear when the defending king has limited escape squares and the attacker can use open files to force the issue.