Discovered Check Puzzle (Rated 1649): Win with Discovered Attack — Endgame Tactic

This puzzle is a classic example of a discovered attack in a chess endgame, where one piece moves to unleash a stronger line of fire from another. The key idea is that the active rook creates immediate tactical pressure on the enemy king and queen, forcing the defender into a narrow set of replies. Even though the material is balanced, king safety is the dominant factor, and that often outweighs static evaluation in practical play.