Free sudoku to print or play
Printable Sudoku: Free Sudoku Puzzles to Print or Play (PDF)
Choose a difficulty and how many puzzles fit on a page, then print or save a PDF with the answers at the back. Each set has a puzzle number, so you can print the same puzzles again. The first puzzle is also ready to play on screen below.
Your printable puzzles
Puzzle pages appear here once the page loads, with the answer key at the end. Every puzzle has exactly one solution.
Play puzzle 1 on screen
The board appears here once the page loads.
Puzzles are generated in your browser and every one is checked to have exactly one solution. Difficulty is set by the solving steps a puzzle needs, not only by how many numbers it starts with. Nothing is uploaded or saved. Print at 100% scale.
How to print sudoku puzzles
Pick a difficulty, choose 1, 2, 4 or 6 puzzles per page and how many pages you want, then press Print or save as PDF. Leave the answer pages on to get every solution at the back, with the starting numbers in bold.
- One puzzle per page gives the largest squares; six per page makes a compact packet.
- Write down the puzzle number to print the same set later.
- Press New puzzles for a fresh set at the same settings.
How difficulty works
Easy and medium puzzles can be finished by finding cells with only one possible number and numbers with only one possible cell; medium starts with fewer numbers. Hard puzzles also need pairs and pointing eliminations. Expert puzzles need more than that. Every puzzle has a single solution, so you never have to guess between two answers.
Free printable sudoku with answers
Each set prints the puzzles first and the answer key last, so you can hand out the puzzles and keep the answers. The answers show the starting numbers in bold and the solved numbers in gray, which makes checking a finished grid quick.
Print or play online
The first puzzle of every set is also on the board below the maker. Tap or click a cell, then type a number or use the number buttons. Notes mode lets you pencil in candidates, Check marks any wrong numbers, and Hint fills in one cell.
Easy, hard, large print, kids and 16x16
The pages below start from different settings: easy puzzles for a gentle start, hard and expert puzzles for a challenge, one large-print puzzle per page, 4x4 and 6x6 puzzles for children, and giant 16x16 grids.
More ways to play
Easy, hard, large print, kids and 16x16 sudoku.
Easy Sudoku Printable: Free Easy Puzzles to Print or Play
Print free easy sudoku puzzles, 1 to 6 per page with answers, or play them on screen. Each one can be solved with simple steps and has one solution.
Hard Sudoku Printable: Hard and Expert Puzzles with Answers
Print free hard and expert sudoku puzzles with answer keys, 1 to 6 per page, or play them on screen. Hard puzzles need pairs; expert puzzles need more.
Large Print Sudoku: Free Printable Big Sudoku Puzzles
Print large print sudoku puzzles, one or two per page with big, bold numbers, in easy to expert levels, with answer pages at the end.
Sudoku for Kids: Printable 4x4 and 6x6 Puzzles with Answers
Print 4x4 and 6x6 sudoku puzzles for kids, up to six per page with answers, or play one on screen. Simple rules, one solution each.
16x16 Sudoku Printable: Free Giant Sudoku Puzzles
Print free 16x16 sudoku puzzles using the numbers 1 to 16, one or two per page with answers, or play one on screen. Each has one solution.
The studio notebook
A useful place to begin.
Clear steps, considered details, and ideas you can put to use.
How to Play Sudoku: Rules and a First Solving Pass
Learn the sudoku rules, the basic vocabulary, and how to work through your first puzzle one step at a time.
Sudoku Strategies for Beginners: Singles and Pencil Marks
Learn scanning, naked singles, hidden singles and pencil marks, plus how to avoid guessing.
Sudoku Difficulty Levels Explained: Easy to Expert
See what easy, medium, hard and expert mean on this site and how to move up a level when you are ready.
Large Print Sudoku Tips for Comfortable Solving
Practical ways to make printed sudoku easier to read, from one puzzle per page to lighting and pencils.
Sudoku for Kids: Start With 4x4 and 6x6 Grids
A gentle way to introduce sudoku with small grids, shared reasoning, and picture or color variations.
Printing Your Own Sudoku Puzzle Packet or Booklet
How to build a printable sudoku packet with the right layout, answer key, and binding.
A few helpful answers
Before you begin.
Are these sudoku puzzles free to print?
Yes. Print as many as you like with no account. The only extra text on the page is a small line with the site name.
Does every puzzle have one solution?
Yes. Each puzzle is checked by a solver before it is shown, so there is exactly one correct way to fill the grid.
Can I print the answers?
Yes. Keep Add answer pages at the end ticked. The answers show the starting numbers in bold and the rest in gray.
How do I print the same puzzles again?
Type the puzzle number shown in the status line and on each puzzle, keep the same settings, and print again.
Can I play on my phone?
Yes. The board below the maker works with taps. Tap a square, then tap a number. Notes, Check and Hint work on phones too.
How is difficulty decided?
By the solving steps a puzzle needs. Easy and medium need only single-candidate steps, hard needs pairs and pointing eliminations, and expert needs more than that.