Windmill Puzzle (Rated 1080): Win with a Discovered Check — Tactical Refutation

This puzzle is a classic tactical refutation in a sharp middlegame-to-endgame setting. White’s bishop and rook coordination creates a forcing sequence that begins with a discovered check, exposing the enemy king while also attacking the queen. The key idea is that one piece steps aside to unlock a stronger line of attack, and the opponent’s king is driven into a worse square where the next tactic wins even more material. It is a clean example of how activity can outweigh raw material.