Choose your difficulty level - no maths required!
Surprise me
New Sudoku puzzles publish at midnight CET and are also available in print books.
Frequently Asked Questions
What is Sudoku?
Sudoku is a classic logic puzzle where you fill the cells of a 9×9 grid so that every row, column, and 3×3 box contains the digits 1 to 9 exactly once. No maths is needed— it’s pure pattern-spotting and logical deduction.
Is Sudoku good for the brain?
Yes. Research shows that logic puzzles like Sudoku improve concentration, memory, and pattern recognition. Even a quick daily puzzle can help sharpen your thinking.
Do I need to create an account to play?
No. You can play all daily puzzles freely without signing up.
How often are new puzzles released?
A new puzzle is published every day at midnight CET for each difficulty level (Easy, Medium, Hard). You can also explore puzzles from our printed Sudoku books.
Is Sudoku suitable for beginners?
Absolutely. Start with the Gentle puzzles if you’re new to Sudoku. They teach core techniques like full house and singles without being overwhelming.
Can I print these Sudoku puzzles?
Yes. Each puzzle includes a printable version via your browser’s print feature. For high-quality layouts, our Sudoku books offer beautiful design and included solutions.
Does Sudoku require guessing?
No. All HeadScratcher puzzles are designed to be solved logically without guessing. Each puzzle has a single unique solution.
Can I play Sudoku on my phone?
Yes. HeadScratcher is fully optimised for mobile and can be installed as a PWA so you can play in a full-screen app-like experience.
Is there a way to choose a random puzzle?
Yes. Use the Surprise me button to get a randomly selected puzzle from any difficulty.
Are the puzzles timed?
The built-in timer runs automatically, but it’s completely optional. You can ignore it and solve at your own pace, or use it to track improvement over time.
Where do the puzzles come from?
All daily puzzles are hand-selected from the HeadScratcher Sudoku collection, including puzzles from our published books.