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How to print your sudoku sheets
- Choose a difficulty, how many puzzles you want on each page, how many pages, and your paper size.
- Press Make puzzles. The preview shows each sheet the way it will print.
- Tick Add answer pages if you want the solutions. They print after the puzzles, so you can tear them off or keep them for later.
- Press Print. Only the sheets are printed: no menus, no ads and nothing else from this page.
A few print tips. Leave the scale at 100% (or "default") in the print window so the grids stay square. If your browser adds the date and web address at the top and bottom of the page, switch off "Headers and footers" in its print settings. To keep a copy on your computer or send it to someone, choose "Save as PDF" as the printer.
Changing the puzzles per page or the paper size redraws the same puzzles in the new layout. Changing the difficulty or the number of pages needs a fresh set, so press Make puzzles again.
Which level should you print?
Each puzzle is tested by solving it step by step the way a person would, so the level tells you what kind of thinking it takes, not just how many numbers are filled in.
| Level | Clues | What it takes |
|---|---|---|
| Easy | About 38 | Only singles: find the one square a digit can go in, or the one digit a square can take |
| Medium | About 30 | Still only singles, but fewer clues means more scanning |
| Hard | Mid to high 20s | Pencil marks, plus pairs and pointing |
| Expert | Low to mid 20s | Triples, quads or an X-wing |
Easy and medium sheets work well for beginners, classrooms and long car rides. Hard and expert are for solvers who already use pencil marks. Six to a page fits a lot of puzzles on one sheet but makes the squares small, so pick 1 or 2 per page for younger players or anyone who likes room to write notes.
How to play sudoku
Fill the grid so that every row, every column and every 3 by 3 box contains the digits 1 to 9 exactly once. The printed numbers are the clues and never change.
Here is a quick example. Suppose the top-left box is missing only a 5, a 6 and a 9, and the first row already has a 6 and a 9 somewhere outside that box. The empty square of that box sitting in the first row cannot be 6 or 9, so it must be the 5. Working like this, one square at a time, solves any easy or medium sheet from start to finish.
Tips for solving on paper
- Use a pencil with an eraser. Mistakes happen, and a single wrong digit can spoil the rest of the grid.
- Write small candidates in the corners of a square when you get stuck. On hard and expert sheets, this is how pairs and pointing become easy to spot.
- Scan one digit at a time across the whole grid. Looking for every spot a 1 could go, then every spot a 2 could go, is faster than staring at one square.
- Check the answer page only after you finish, or when you have truly hit a wall on one square.
Prefer to play on screen?
Our evil sudoku has daily Hard, Expert and Evil grids with notes, mistake checks and hints that name the technique. Killer sudoku uses cage sums instead of clues, samurai sudoku links five grids and has its own print button, and Canoku is a Canadian emoji sudoku with a gentle 4x4 grid for kids.