Learn How to Win with a Long Sacrifice: Skewer
This chess endgame puzzle is built around a forcing tactical idea: the attacker uses a long sacrifice to drag the king and then exploit the exposed king with a skewer. In practical classical chess, these motifs often appear when rooks are active on open files and the enemy king is stuck in the center. The key is to notice when a seemingly protected piece is actually overloaded by king safety and tactical threats.