Learn How to Win a Chess Endgame: Long Skewer
This chess endgame puzzle shows how a rook can dominate when the enemy king is exposed and a loose piece sits on the same line. The key idea is a long skewer: you force the king to move, then keep checking along the file or rank until the valuable piece behind it becomes vulnerable. In simplified positions, activity often matters more than raw material, and forcing moves can convert a small edge into a decisive one.