A sudoku generator that builds a fresh, printable puzzle every time you press Generate. Every puzzle is checked to have exactly one solution, so you never get an ambiguous grid with multiple answers. Difficulty changes how many clues (the numbers filled in from the start) remain: Easy leaves more, Hard leaves fewer, and fewer clues make a harder puzzle. Choose 1, 2, 4 or 6 puzzles per page to print a whole set of handouts at once. Tick "Include answer key" to also output the completed grids so checking answers is quick. The grid is drawn as crisp SVG, so it stays sharp when printed and can be saved as a PDF. Use it for brain training and downtime, activities at care homes and day services, printable handouts, or learning at home. Titles and other input are never uploaded — everything runs in your browser.
How to use
- Pick a difficulty (Easy, Medium or Hard) and how many puzzles per page.
- Optionally tick Include answer key, then press Generate.
- Press Print to print it (or save as PDF). Don't like this one? Press Generate again for brand-new puzzles.
FAQ
Does each sudoku have a single solution?
Yes. Every puzzle is checked by the generator to have exactly one solution, so any grid that could be solved more than one way is discarded. From the given clues alone you can always reach a single, logically determined answer.
What does the difficulty setting change?
It changes how many clues (numbers filled in from the start) the puzzle keeps. Easy leaves more clues and Hard leaves fewer — the fewer the clues, the harder the puzzle is to fill in. Use Easy for children or beginners and Hard for an adult brain-teaser.
Can I print several puzzles on one page?
Yes — choose 1, 2, 4 or 6 puzzles per page. Four or six per page is handy for handouts or solving a batch. Combine it with "Include answer key" to prepare a puzzle sheet and a solution sheet together.
Is anything I enter stored or uploaded?
Titles and other input are never sent to a server and are not saved. Everything runs in your browser (only settings like the difficulty are stored on your device for next time, and can be cleared with Reset).