Sudoku Generator
Generate printable Sudoku sheets with six puzzles per page.
Pick a difficulty, choose paper size, and optionally include solutions. Safe mode keeps puzzles to one unique solution.
Puzzle options
Select difficulty and paper size, then generate four puzzles per page.
Downloads a print-ready PDF to your device; open it to print from your system dialog.
Print preview
Preview the six-up layout. The buttons download a print-ready PDF that you can print from your PDF viewer.
Solutions
How printing works
- Six puzzles render per page in a 2x3 grid for consistent layouts.
- Switch paper size between A4 and US Legal to match your printer setting.
- Unique solutions toggle enforces a single-solution puzzle by checking with a built-in solver.
- Include solutions to add a separate printable page with completed grids.
What you’ll get
You’ll get six Sudoku puzzles arranged for printing, plus an optional solutions page. The header reflects your difficulty and paper size so you can print directly without extra formatting or resizing.
A quick note
Puzzles are generated in your browser and can vary slightly by settings. Printing results can also differ depending on your printer and margins.
How the Sudoku generator works
The generator creates a solved grid, removes numbers to match your chosen difficulty, and checks for a single solution when safe mode is on. Everything runs locally in your browser, so it stays fast and works offline. For print sizing help, use the Paper Sizes Calculator.
What you can choose
- Difficulty (easy, medium, hard, or mixed)
- Paper size (A4 or US Letter) for print layout
- Unique solutions toggle for single‑solution puzzles
- Include solutions toggle for an extra page
- Fixed layout of six puzzles per page
Behind the scenes
- Start from a valid solved grid
- Remove values to match the difficulty’s clue target
- Run a solver to confirm uniqueness when safe mode is on
- Render puzzles and answers with print‑friendly borders
Step‑by‑step
- Create a filled Sudoku grid.
- Remove numbers until the difficulty target is met.
- If safe mode is on, confirm a single solution.
- Repeat until you have six puzzles, then render the preview.
- If solutions are enabled, add a second page.
A quick example
Example: Medium difficulty, A4 paper, safe mode on, and solutions included. The preview shows six puzzles in a 2×3 grid with bold 3×3 borders, plus a second page of answers ready to print.
Helpful tips
- Easy puzzles keep more clues visible for faster solves.
- Medium balances blank spaces with a steady solving path.
- Hard removes more cells and needs deeper deduction.
- Unique solutions mode favors single‑solution grids.
- Paper size aligns with typical printer margins for cleaner output.
Limits to keep in mind
Difficulty is based on clue counts, not handcrafted logic. Safe mode checks uniqueness but doesn’t grade strategy depth. Printing results can vary depending on your browser and printer.
FAQs
Quick answers
What does this Sudoku generator create?
It builds printable Sudoku grids with your selected difficulty (including mixed sets) and paper size, ready to print in a six‑per‑page layout.
What is the unique solutions toggle?
Unique solutions mode runs an internal solver to keep puzzles to a single valid solution, which reduces ambiguity.
How many puzzles are on each page?
The preview and printable output use six puzzles per page in a 2x3 grid to stay consistent on paper.
Can I print on A4 or US Letter?
Yes. Choose A4 or US Letter in the paper size menu and the layout will adjust for that page.
Is this tool providing any guarantees or advice?
No. It’s a generator for personal use. It doesn’t provide guarantees or advice.
Related tools
Word puzzles
Word Search GeneratorWord games
Logic puzzles
Binary Puzzle GeneratorClassic puzzles
Crossword GeneratorLast updated February 3, 2026.