Learn How to Win Material: Discovered Attack
This chess endgame puzzle centers on a crushing discovered attack: one piece gives check while also uncovering a stronger threat behind it. The key idea is that the checking piece can be sacrificed if it forces the king to capture, because that capture removes a defender and opens a direct line to win material. In this position, the attacking side also exploits a pinned piece, a trapped rook, and a vulnerable king shelter to convert activity into a decisive material gain.