150 Free Printable Sudoku Puzzles

Free Sudoku puzzles you can download and print. Each puzzle is a single page PDF with plenty of room to write. Solutions are provided separately so you won't accidentally see the answer.

Sudoku hardly needs an introduction, but there's a reason it's the most popular logic puzzle in the world. The rules take 30 seconds to learn, and the solving process is pure deduction. No math, no trivia, no guessing. Just you, a grid, and the question of which number goes where.

There's also something to be said for solving on paper rather than a screen. You can scribble pencil marks wherever you want, circle candidates, draw arrows between related cells. Paper gives you spatial freedom that apps can't match, and many solvers find it more satisfying to fill in a grid by hand.

Jump to: Easy (50) • Medium (50) • Hard (50) • Sudoku Rules • Terms of Use

These printables are designed for comfortable solving. The grids are large with clearly defined 3×3 boxes and spacious cells for pencil marks. Each difficulty level is calibrated by the number of given digits and the solving techniques required. Solutions are in separate files, so there's no risk of a stray glance spoiling your progress.

Click any puzzle link to open the PDF in a new tab, then print or save. All puzzles are free for personal and organizational use.

50 Easy Sudoku

Best for beginners or a relaxing solve. These puzzles start with more given digits, so you'll find cells where only one number can fit just by scanning rows, columns, and boxes. Basic elimination is usually all you need.

If you're new to Sudoku, this is the place to start. The higher number of givens means you'll make steady progress without hitting walls. Most Easy puzzles can be completed in five to ten minutes, making them a good fit for a coffee break or a quick mental warm-up.

They're also a good choice for classrooms and group activities. The straightforward solving process means everyone can participate, even if they've never tried Sudoku before.

50 Medium Sudoku

A step up from Easy. These puzzles have fewer given digits, so basic scanning won't carry you through the whole grid. You'll need to use pencil marks and start looking for pairs: two cells in the same row, column, or box that can only contain the same two digits.

Medium is where Sudoku starts to feel like a real puzzle rather than a fill-in exercise. You'll hit points where no cell has an obvious answer, and you'll need to combine information from multiple rows, columns, and boxes to make progress. That's the satisfying part.

Expect each puzzle to take 10 to 20 minutes. A good level for daily practice if you want something that engages your attention without being grueling.

50 Hard Sudoku

Challenging puzzles with fewer given digits and more complex logical dependencies. Pencil marks aren't just recommended, they're essential. You'll work through pairs, triples, and sometimes more advanced techniques like pointing pairs and box/line reduction.

At this level, the puzzle rarely hands you an easy win. Progress comes from systematically narrowing candidates and spotting patterns across the grid. When a chain of deductions finally unlocks a stubborn section, the payoff is worth the effort.

Expect these to take 20 minutes or more. If you get stuck, try a different area of the grid. For explanations of advanced solving techniques, see my Sudoku instructions page.

How to Solve Sudoku

The rules of Sudoku are simple: Fill the grid so every row, column, and 3×3 box contains the digits 1-9 exactly once. No math is required, just logic.

As you can see from the image at left, I write the numbers 1 to 9 along the side of the puzzle. I then cross out each number after I've filled in all nine of that number. That way I don't waste time considering numbers already fully solved.

If you're new to Sudoku, start with the Easy puzzles and use these basic strategies:

Scanning. Look at each row, column, and box to find cells where only one number can fit. This alone will solve most Easy puzzles.

Pencil marks. When you're stuck, write small candidate numbers in empty cells. I usually write them in the upper right corner. This helps you spot patterns and eliminate possibilities.

Pairs and triples. If two cells in a row, column, or box can only contain the same two numbers, those numbers can be eliminated from other cells in that group.

For explanations of advanced techniques, such as Ghosting, RC Counting, Tagging, and Line Checking, see the Sudoku Instructions - How to Play and Win page.

Printing Tips

Each puzzle is a single-page PDF designed for standard letter-size (8.5×11") paper. They also print well on A4. For the best results, use your browser's "Fit to page" setting and make sure "Print backgrounds" is turned off (it should be by default). The puzzles are black and white, so they work fine on any printer.

If you're printing for a group (for example, a classroom, a company event, a senior center activity, or family game night), feel free to print as many copies as you need. The solution files are separate, so hand out puzzles without worrying about answers being visible on the back.

Prefer to solve on a tablet? The PDFs also work well with stylus-based annotation apps. Just open the file and write directly on the screen.

Why Sudoku?

Sudoku exercises logical reasoning and pattern recognition. It's not going to turn you into a genius, but it's genuinely engaging mental activity, and considerably more stimulating than passive entertainment. The puzzles offer a clear challenge with an unambiguous solution, which makes them satisfying to complete.

For more about the cognitive benefits of puzzles, see my Brain Games overview.

More Printable Puzzles

This page is part of my Printable Puzzles collection. I'm adding new puzzle types regularly.

You might also enjoy my Printable Kakuro, Printable Futoshiki, or Printable Slitherlink puzzle pages.

Terms of Use

These puzzles are free for personal use and for organizations, including classrooms, senior centers, memory care facilities, homeschool groups, clubs, churches, and workplaces. You may print as many copies as you need. Please don't sell them or remove the copyright notice.

Publishers: You may include one or two puzzles in each newsletter or bulletin with attribution to Memory-Improvement-Tips.com.

Published: 01/23/2026
Last Updated: 03/09/2026