Windmill Puzzle (Rated 1017): Win Material — Discovered Attack

This chess endgame centers on a forcing discovered attack where one active rook creates a direct check while also exposing a second tactical target. The key idea is not just the check itself, but the hidden pressure it reveals on the enemy king and loose pieces. In classical chess, these long tactical sequences often decide the game by converting activity into material gain, especially when the defending king is short of safe squares and the opponent’s pieces are overworked.