Defending Rook Endgames Puzzle: Defend — Rook Endgame

This chess endgame tests active rook defense. White has an extra pawn, but Black's advanced passed pawn creates immediate danger. The rook must stay active, checking the exposed king and controlling the squares around the passer. Repeated checks are not aimless when they prevent the king from supporting promotion. The key defensive idea is to keep the enemy king away while preserving control of the promotion path. In rook endgames, activity often matters more than simply counting pawns.