
ChessUnlock is a macOS application that presents a chess puzzle every time a user unlocks their Mac. The app features over 5 million tactical positions sourced from Lichess, allowing users to practice chess passively throughout their day. Each puzzle is tailored to the user's Elo rating, ensuring that the challenges remain engaging and appropriately difficult. The process is designed to integrate seamlessly into daily routines, requiring no additional motivation or reminders to practice chess.