Logic puzzle practice built for quiet focus and short sessions.
Work through 6x6 beginner boards and 9x9 standard boards with classic row, column, and box rules. Each puzzle has a unique solution and supports both direct answers and candidate notes.
Use the guided tutorial to learn row elimination, column elimination, box elimination, and unique candidates on a compact demo board. Then continue with chapter play, daily challenges, and a steady progression of puzzle difficulty.
The app saves your current run locally, including elapsed time, undo history, candidate notes, and hint usage. You can resume unfinished games, clear a run with confirmation, and compare a clear against your personal best.
Helpful tools include conflict checking, undo and redo, three hints per run, a pause panel, a results summary, and a dedicated review screen. You can also switch between light and dark themes and tune helper display options in preferences.
Progress, best times, solved puzzles, and daily challenge history are stored on the device only. No account, cloud sync, ads, or online play are required.
Offline logic puzzles with guided deduction, daily challenges, and stats.