Rook Endgame Puzzle (Rated 768): Win a Rook Endgame — Short Skewer

This chess endgame shows how a rook can dominate when the enemy king and rook are lined up on the same file or rank. The key idea is a short skewer: a forcing check that drives the king into a worse square while exposing the rook behind it. In classical chess, these positions often look equal at first, but one precise tactical move creates a decisive advantage. The board is simplified, so activity and king safety matter more than raw material.