Support
How to play
- Goal
- Fill the 9×9 grid so every row, column, and 3×3 box contains 1–9.
- Enter a digit
- Tap a cell, then tap a number on the pad.
- Notes
- Turn on Notes to jot candidate digits into a cell.
- Undo & hints
- Undo is unlimited and free. A hint reveals one correct cell — but an assisted solve can't set a best time.
- Win
- Complete the grid correctly. If the mistake limit is on in Settings, too many wrong entries ends the game.
FAQ
- What is the Daily puzzle?
- One board per day, seeded from the date, so everyone worldwide solves the same puzzle. Solve it each day to build a streak.
- Can a puzzle force a guess?
- Never. Every generated board has exactly one solution and can be reached by logic alone.
- Does Ninewise collect any data?
- No. It is fully offline — see Privacy.
- What is the tip jar?
- A way to say thanks. It unlocks nothing — every feature is already yours.
Contact
Questions or feedback? Emailninewise@codebase-bv.be.