Are the Sudoku puzzles unique?

Yes. Every puzzle is generated fresh in your browser when you click download, so no two PDFs are ever the same.

Do the PDFs include answer keys?

Yes. Answer keys are always included on the final pages. Multi-puzzle books also include a tappable index page linking to every puzzle and to the answer keys.

What grid sizes are available?

Four sizes: 4×4 for kids and warm-ups, 6×6 for a light challenge, classic 9×9, and 12×12 for experts.

How do I use the PDF on my reMarkable tablet?

Choose the reMarkable page size before downloading, then import the PDF via the reMarkable desktop or mobile app. The tappable index links work on the device.

Are these sudoku puzzles unique?

Yes. Every PDF is generated fresh in your browser at download time, so no two puzzles are ever the same.

Do the PDFs include solutions?

Yes. Answer keys are always included on the final pages of the PDF.

Free PDF downloads · No signup · Made for reMarkable, Supernote, BOOX, and standard printers.

Sudoku Generator

Generate printable Sudoku puzzles at any difficulty and grid size. Multi-puzzle books include a tappable index page and full answer keys.

Settings

Configure your puzzle before downloading.

Difficulty

Grid Size

Number of Puzzles1

112

Page Size

Answer keys are included. Your PDF downloads automatically after generation.

Preview

Medium · 9 × 9 sample puzzle

Generating…

Keep the logic practice going with another generator.

Crossword Nonogram KenKen All games

About Sudoku

Sudoku is a logic puzzle where you fill a grid so every row, column, and box contains each digit exactly once. This generator creates unique sudoku PDFs in four grid sizes (4×4, 6×6, 9×9, 12×12) at four difficulties, sized for reMarkable tablets and standard paper.

Tips

Start by scanning for rows, columns, or boxes missing only one digit.
Use pencil marks (small candidate numbers) to track possibilities.
New to sudoku? Choose the 4×4 or 6×6 grid size before reaching for 9×9.
Multi-puzzle books include a tappable index page — jump between puzzles on your tablet.

FAQ

Are these sudoku puzzles unique?: Yes. Every PDF is generated fresh in your browser at download time, so no two puzzles are ever the same.
Do the PDFs include solutions?: Yes. Answer keys are always included on the final pages of the PDF.

Make the worksheet useful

Choose, check, then download

Logic-puzzle solvers who want fresh printable grids from approachable to very sparse.

Suggested workflow

1Choose a difficulty that matches the intended solver.
2Generate one puzzle first and inspect the preview.
3Download a larger set only after the clue density feels right.

Why this format

Every grid is generated with an answer key, so the printable set remains usable without an online checker.

Sample PDF

Set the puzzle count to one to export the current preview as a sample PDF.