Sudoku Puzzle Generator
This Sudoku generator is a quick way to make printable puzzles without any setup. Pick the difficulty you want, click generate, and the puzzle appears. If you like solving Sudoku on paper, you can download it as a PDF and print it straight away.
It works well for classrooms, practice at home, or putting together your own puzzle books. There’s nothing complicated - start creating now!
Note: Generating a large amount of puzzles at once may take a few moments or briefly freeze your browser.
How to Use This Sudoku Generator
Making your own Sudoku puzzles doesn’t take much effort. Start by choosing a difficulty level. You can pick Easy, Medium, or Hard depending on who the puzzles are for. If you’re new to Sudoku or creating puzzles for kids, Easy is usually the best choice. If you solve puzzles often, Hard will give you more of a challenge.
Next, choose how many puzzles you want to generate. You can create just one for yourself or generate a large batch if you’re working on a booklet or class handout. Once you click the generate button, the puzzles appear straight away. When you’re ready, you can download them as a PDF. The puzzles and answer keys are saved separately, so you won’t accidentally see the solutions while solving.
Who Is This Sudoku Generator For?
This tool is for anyone who prefers solving Sudoku on paper rather than on a screen. Teachers often use it to create quick activities for early finishers or short logic breaks during lessons. It’s also useful for parents who want to give their children something quiet and mentally engaging to work on.
It’s a good option for people who enjoy making their own puzzle books as well. If you’re planning to print puzzles for friends, family, or personal projects, the layouts are clean and ready to use. Of course, it also works just as well for casual solvers who want a fresh puzzle without buying a new book every time.
Sudoku Difficulty Levels Explained
Sudoku difficulty isn’t about bigger numbers — it’s about how many clues you’re given and where they’re placed. Easy puzzles usually start with around 35 to 40 numbers already filled in. This makes it easier to see what comes next, and there’s often an obvious move available.
Medium puzzles usually begin with fewer clues, around 25 to 30. These require a bit more thinking and careful checking, but they’re still manageable for most regular solvers. Hard puzzles are more demanding and often start with 20 clues or fewer. With these, progress can feel slower, and you may need to use techniques like spotting pairs or narrowing down possibilities. They take longer, but finishing one is very satisfying.
Frequently Asked Questions
Is there a limit to how many puzzles I can print? No. You can generate and download as many puzzles as you need, whether it’s a few or a large batch.
Do the puzzles have only one solution? Yes. Each puzzle is checked to make sure it has a single, correct solution.
Can I use these puzzles in my own books or printables? Yes. You’re free to use the generated PDFs for personal projects or puzzle books.
Why are the answers downloaded separately? This helps keep the solutions hidden while solving and makes printing answer sheets easier.
What paper size are the puzzles formatted for? The PDFs use standard A4 sizing, with clear grids and enough space for notes.
Is the generator free to use? Yes. You can generate and download puzzles without paying or signing up.
Tips for Solving Sudoku on Paper
Using a pencil makes a big difference, especially when you need to erase and rethink a move. Try starting with rows, columns, or boxes that already have the most numbers filled in, as they’re usually easier to complete.
Pay attention to which numbers are missing rather than scanning the whole grid at once. Pencil marks in the corners of squares can help you track possibilities without committing too early. And if you get stuck, stepping away for a few minutes often helps — it’s surprising how often the answer becomes obvious when you come back.