Perpetual Check: a theory course

Repeated checks can save a losing position. Confirm that the opponent cannot escape the checking sequence.

5 lessons, each followed by its own puzzle drill, then 10 themed puzzle packs.

• Endless Checks — Keep checking without losing the checking piece.
• Repeat Checks Between Two Squares — Find a repeating checking route.
• The Saving Perpetual — Answer a mating threat with a lasting series of checks.
• Sacrifice Into It — Sacrifice only when it gives a reliable checking sequence.
• Truly Perpetual — Check every king escape before claiming a perpetual.