A quiet daily logic puzzle. No account required; your progress stays on this device.
Enter starting symbols, then validate or save.
This action cannot be undone.
A quiet daily logic-puzzle app, with everything kept on your device.
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Choose your play
Play the rotating featured puzzle, build a streak, and share a result without revealing the solution.
Generate Sudoku, Wordoku, and Latin Square boards in the size and difficulty you prefer.
Enter, validate, organize, share, print, import, export, or solve compatible custom puzzles.
Your puzzle state, preferences, streaks, and best times stay stored locally in this browser.
Fill the grid so that every row and column contains the required symbols without any repeats. Use the keypad or tap empty cells to select and input values.
Played on a 9x9 grid using numbers 1-9. In addition to rows and columns, every 3x3 box must also contain the numbers 1-9 without repeating.
Like Sudoku, but uses 9 letters instead of numbers. If Check Diagonals is enabled, the two main diagonals must also contain unique letters, and they often spell a hidden word!
A classic grid of varying sizes (e.g., 5x5, 6x6). There are no internal boxes—just ensure that rows and columns have no repeating symbols.
Choose the recipe for your next New or Custom puzzle. Daily uses the featured global recipe.
Unsaved changes. Save to update the recipe used by New and Custom.
App preferences that change feedback, not which puzzle you are playing.
When enabled, incorrect entries are highlighted immediately so players can self-correct faster.
Optional micro-sounds for mistakes, hint reveals, completions, and victory. Off by default to keep play quiet.
Subtle haptics on supported devices for mistakes, completions, and victory.
Unsaved changes. Save to update your app preferences.
Progress and puzzles saved in this browser.
Use Custom to enter a puzzle. Saved projects can be reopened and edited here.
Puzzle progress, streaks, saved boards, and creator projects stay in this browser. Vercel Web Analytics records aggregate page usage without storing your puzzle contents.
Drawing a fresh grid...