Windmill Puzzle (Rated 2005): Crush with an Advanced Pawn — Endgame Tactics

This chess endgame is all about using an advanced pawn to force the enemy king into a worse square while your rook and king stay active. The pawn push creates a direct threat and also opens lines for a discovered check, which is a classic way to gain tempo in classical chess. In rook endgames, activity matters more than raw material, so a passed pawn or a dangerous pawn chain can outweigh being down a pawn if the opponent’s king is exposed.