Sudoku Generator (Printable)
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.
Outputs stay in your browser. Print using your system dialog when the preview looks right.
Print preview
Each set shows six puzzles. Use your browser print dialog to export or print.
| 4 | 2 | 6 | 3 | 9 | ||||
| 4 | 2 | 1 | 3 | |||||
| 5 | 9 | 8 | 4 | 6 | ||||
| 2 | 8 | 1 | 4 | 7 | ||||
| 7 | 9 | 1 | 4 | |||||
| 4 | 3 | 8 | 9 | |||||
| 4 | 5 | 9 | 2 | |||||
| 8 | 5 | 7 | 2 | 3 | 4 | |||
| 3 |
| 7 | 5 | |||||||
| 5 | 4 | 6 | 1 | 8 | 7 | 3 | ||
| 3 | 4 | 8 | 9 | 1 | ||||
| 5 | 3 | 1 | 2 | |||||
| 3 | 4 | 1 | 8 | |||||
| 1 | 7 | 3 | 5 | |||||
| 9 | 2 | |||||||
| 6 | 4 | |||||||
| 6 | 2 | 5 | 8 | 1 |
| 6 | 7 | 1 | ||||||
| 1 | 3 | 5 | 2 | |||||
| 5 | 8 | 7 | ||||||
| 9 | 2 | 4 | ||||||
| 6 | 3 | 9 | 2 | 8 | ||||
| 2 | 6 | 1 | 5 | 9 | 3 | |||
| 8 | 6 | 9 | 4 | 3 | ||||
| 6 | 5 | |||||||
| 5 | 1 | 8 | 6 |
| 4 | 8 | 2 | 6 | |||||
| 7 | 2 | 5 | 3 | |||||
| 6 | 4 | 9 | 8 | |||||
| 1 | 2 | 7 | 8 | 4 | 6 | |||
| 8 | 7 | 1 | 3 | |||||
| 4 | 6 | 9 | 2 | |||||
| 8 | 2 | 6 | 4 | 3 | 5 | |||
| 8 | 7 | 4 | ||||||
| 7 | 1 | 8 |
| 2 | 3 | 1 | ||||||
| 5 | 9 | 6 | ||||||
| 1 | 5 | 9 | 2 | 7 | ||||
| 8 | 7 | 5 | ||||||
| 5 | 6 | 9 | 4 | 2 | 8 | |||
| 3 | 9 | 1 | ||||||
| 3 | 6 | 4 | ||||||
| 5 | 9 | 6 | ||||||
| 6 | 8 | 4 | 7 | 5 |
| 4 | 5 | 6 | ||||||
| 8 | 2 | 4 | 3 | |||||
| 6 | 1 | 5 | 2 | |||||
| 4 | 6 | 5 | 8 | 7 | 9 | |||
| 5 | 2 | 8 | 3 | 1 | ||||
| 9 | 3 | 4 | 6 | 8 | ||||
| 5 | 2 | 9 | 7 | 4 | ||||
| 6 | 2 | 8 | ||||||
| 8 | 9 |
| 4 | 2 | 6 | 5 | 3 | 1 | 9 | 7 | 8 |
| 9 | 7 | 8 | 4 | 6 | 2 | 5 | 1 | 3 |
| 5 | 1 | 3 | 9 | 8 | 7 | 4 | 2 | 6 |
| 2 | 8 | 9 | 1 | 4 | 6 | 7 | 3 | 5 |
| 7 | 3 | 5 | 2 | 9 | 8 | 1 | 6 | 4 |
| 1 | 6 | 4 | 7 | 5 | 3 | 2 | 8 | 9 |
| 3 | 4 | 1 | 8 | 7 | 5 | 6 | 9 | 2 |
| 8 | 5 | 7 | 6 | 2 | 9 | 3 | 4 | 1 |
| 6 | 9 | 2 | 3 | 1 | 4 | 8 | 5 | 7 |
| 1 | 9 | 8 | 2 | 7 | 3 | 6 | 4 | 5 |
| 5 | 4 | 6 | 1 | 8 | 9 | 7 | 3 | 2 |
| 2 | 3 | 7 | 5 | 6 | 4 | 8 | 9 | 1 |
| 6 | 5 | 3 | 8 | 4 | 1 | 9 | 2 | 7 |
| 7 | 2 | 9 | 6 | 3 | 5 | 4 | 1 | 8 |
| 8 | 1 | 4 | 7 | 9 | 2 | 3 | 5 | 6 |
| 4 | 8 | 5 | 9 | 1 | 7 | 2 | 6 | 3 |
| 9 | 7 | 1 | 3 | 2 | 6 | 5 | 8 | 4 |
| 3 | 6 | 2 | 4 | 5 | 8 | 1 | 7 | 9 |
| 4 | 6 | 9 | 3 | 2 | 5 | 8 | 7 | 1 |
| 8 | 7 | 1 | 4 | 9 | 6 | 3 | 5 | 2 |
| 3 | 5 | 2 | 8 | 1 | 7 | 4 | 6 | 9 |
| 5 | 9 | 3 | 7 | 8 | 2 | 6 | 1 | 4 |
| 6 | 1 | 4 | 5 | 3 | 9 | 7 | 2 | 8 |
| 7 | 2 | 8 | 6 | 4 | 1 | 5 | 9 | 3 |
| 1 | 8 | 6 | 9 | 5 | 4 | 2 | 3 | 7 |
| 2 | 3 | 7 | 1 | 6 | 8 | 9 | 4 | 5 |
| 9 | 4 | 5 | 2 | 7 | 3 | 1 | 8 | 6 |
| 5 | 4 | 3 | 9 | 8 | 1 | 7 | 2 | 6 |
| 9 | 1 | 8 | 7 | 6 | 2 | 5 | 4 | 3 |
| 7 | 2 | 6 | 5 | 3 | 4 | 9 | 1 | 8 |
| 1 | 3 | 9 | 2 | 7 | 8 | 4 | 6 | 5 |
| 2 | 8 | 7 | 4 | 5 | 6 | 1 | 3 | 9 |
| 4 | 6 | 5 | 1 | 9 | 3 | 2 | 8 | 7 |
| 8 | 9 | 2 | 6 | 4 | 7 | 3 | 5 | 1 |
| 3 | 5 | 1 | 8 | 2 | 9 | 6 | 7 | 4 |
| 6 | 7 | 4 | 3 | 1 | 5 | 8 | 9 | 2 |
| 9 | 2 | 6 | 8 | 7 | 4 | 3 | 1 | 5 |
| 8 | 7 | 4 | 1 | 3 | 5 | 2 | 9 | 6 |
| 1 | 3 | 5 | 9 | 2 | 6 | 7 | 8 | 4 |
| 2 | 4 | 8 | 7 | 5 | 1 | 6 | 3 | 9 |
| 7 | 5 | 1 | 3 | 6 | 9 | 4 | 2 | 8 |
| 3 | 6 | 9 | 2 | 4 | 8 | 5 | 7 | 1 |
| 5 | 9 | 3 | 6 | 8 | 2 | 1 | 4 | 7 |
| 4 | 1 | 7 | 5 | 9 | 3 | 8 | 6 | 2 |
| 6 | 8 | 2 | 4 | 1 | 7 | 9 | 5 | 3 |
| 2 | 8 | 9 | 3 | 7 | 4 | 5 | 6 | 1 |
| 1 | 6 | 5 | 8 | 2 | 9 | 4 | 3 | 7 |
| 7 | 3 | 4 | 6 | 1 | 5 | 9 | 8 | 2 |
| 4 | 1 | 6 | 2 | 5 | 8 | 3 | 7 | 9 |
| 5 | 2 | 8 | 7 | 9 | 3 | 6 | 1 | 4 |
| 9 | 7 | 3 | 1 | 4 | 6 | 8 | 2 | 5 |
| 6 | 5 | 2 | 9 | 8 | 7 | 1 | 4 | 3 |
| 3 | 4 | 1 | 5 | 6 | 2 | 7 | 9 | 8 |
| 8 | 9 | 7 | 4 | 3 | 1 | 2 | 5 | 6 |
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.
Results explainer
You'll see 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.
Disclaimer
Generated puzzles are illustrative and for personal use only. This tool does not provide advice or guarantees. Outputs depend on your settings and may vary by printer, paper size, or browser print handling.
How it works
The generator builds a solved grid, removes numbers to hit your difficulty's clue target, and checks uniqueness when safe mode is on. Everything runs in your browser for quick offline-friendly printouts.
Inputs used
- Difficulty selection (easy, medium, hard, or mixed sets)
- Paper size (A4 or US Legal) for @page sizing
- Unique solutions toggle for single-solution puzzles
- Include solutions toggle for an extra printable page
- Fixed layout of six puzzles per page
Core logic
- Start from a valid solved grid using band and stack shuffles
- Remove values to reach clue targets that match the difficulty
- Run a backtracking solver to count solutions when safe mode is on
- Render puzzles and optional solutions with print-friendly borders
Generation steps
- Create a filled Sudoku grid using shuffled bands and stacks.
- Remove numbers until the clue range for the chosen difficulty is met.
- When unique solutions mode is active, verify a single solution with the solver.
- Repeat to make six puzzles, then render a print preview.
- Include solutions to add a second page with completed grids.
Example scenario
Example: Medium difficulty with A4 paper, safe mode on, and solutions included. The preview shows six puzzles in a 2x3 grid with bold borders for every 3x3 block and a second page of completed grids ready to print or export.
Interpretation notes
- Easy puzzles keep more clues visible for quicker solving sessions.
- Medium balances blank spaces with a steady solving path.
- Hard removes more cells, leaving trickier deduction chains.
- Unique solutions mode favors single-solution grids; turning it off can create looser puzzles.
- Paper size styling aligns with typical printer dialogs for clean margins.
Limitations & assumptions
Puzzles are generated with simple heuristic clue targets rather than handcrafted logic. Safe mode checks for uniqueness but does not grade solving difficulty beyond clue counts. Outputs rely on your browser's print handling and may vary by printer margins.
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, reducing ambiguous layouts.
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.
Is this tool providing any guarantees or advice?
No. Outputs are generated puzzles for personal use. They are illustrative only and not advice.
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