Perpetual Check Puzzle (Rated 1500): Repetition Tactic — Chess Endgame Puzzle with Theory & Hints

This chess endgame puzzle is built around task-repetition: the same checking pattern reappears as the king is driven back and forth. Black’s active bishop and knight coordinate to keep White’s king under pressure while also exploiting loose pieces and weak squares. The key idea is not a direct mating attack, but a forcing sequence that keeps the initiative and prevents White from stabilizing. In practical play, repeated checks can be a powerful way to maintain control and improve piece placement.