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.

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

Jump to:
Easy (20) • Medium (20) • Hard (10) • Sudoku Rules • Terms of Use

Easy Sudoku

Best for beginners or a relaxing solve. These puzzles have more starting numbers and can typically be solved using basic elimination.

Medium Sudoku

A step up from easy. You'll need to use pencil marks and look for number pairs to solve these.

Hard Sudoku

Challenging puzzles with fewer starting numbers. Pencil marks recommended.

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.

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, including Kakuro, Nonograms, and other logic puzzles.

You might also enjoy my Word Search Printables or Crossword Puzzles.

Terms of Use

These puzzles are free for personal and organizational use, 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: 02/05/2026