Sudoku Teacher
Learn to solve Sudoku on paper, one trick at a time.
This app won’t solve the Sudoku for you. You make every move, the app gives you advice and helps you understand what works, when and why.
Free. No account, no ads.
How it works
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Start at your level
New to Sudoku, playing now and then, or already know a few tricks: every Sudoku is a short lesson chosen for you.
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A hint in three steps
From a gentle nudge to the full explanation. You decide how much help you want.
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Every trick explained
In plain words with a small picture, the first time it comes up.
Free and full version
Free
The first three tricks
The rules and three tricks: the only spot for a digit in a box, the only spot in a row or column, and how a digit locked in one line of a box rules out cells elsewhere.
In the browser and on Android.
Full version
Hard Sudoku too
- 9 tricks, from simple to advanced, each with a picture and an explanation
- Pencil notes: write candidates just like on paper
- Link candidates into pairs and triples, including hidden ones
One-time payment, no subscription.
On Android for now. An iPhone version is on its way.
Calm, not pressuring. No timers ticking at you, no streaks to keep up. Your progress stays on your device, and anonymous statistics are sent only if you allow it.