Learn How to Win the Pawn Endgame: Zugzwang
This chess endgame puzzle shows how a single active king can decide the game by turning a loose pawn into a winning target. In classical chess, king activity matters more than almost anything once the board is simplified. Here, the key idea is not a flashy tactic but a precise endgame refutation: the opponent’s last move creates a weakness that can be punished immediately, leading to a favorable pawn structure and a winning king-and-pawn ending.