Perpetual Check Puzzle (Rated 1500): Repetition — Chess Endgame

This chess endgame puzzle is built around task-repetition: a forcing sequence that keeps the enemy king under constant pressure while the rook stays active on the seventh and eighth ranks. White’s rook is ideally placed to give checks, restrict escape squares, and exploit the exposed black king. Even though Black has extra material, the position shows how activity and coordination can outweigh raw count when the defending king is boxed in and the checking side controls key files.