Free Printable Sudoku Puzzles (Easy to Expert)

Looking for free printable sudoku puzzles? Below you will find ready-to-print sudoku grids at five difficulty levels, from easy to expert. Each puzzle has exactly one valid solution and is formatted to print cleanly on standard letter or A4 paper. Simply copy the grid, open your browser's print dialog, and you are ready to solve with nothing more than a pencil and an eraser. We update this page regularly with fresh puzzles, so bookmark it and come back whenever you need a new challenge.

Why Printable Sudoku Still Matters

Even in an era of sudoku apps and online solvers, printable puzzles remain enormously popular. There are good reasons for that. Paper sudoku eliminates screen fatigue, works anywhere without a battery, and gives you the tactile satisfaction of writing in your answers with a real pencil. Many teachers use printable sudoku sheets in classrooms to develop students' logical reasoning. Retirement communities and hospitals hand them out as cognitive exercises. And plenty of experienced solvers simply prefer the feel of paper.

Printable puzzles also let you practice pencil mark notation by hand, which is an essential skill if you want to tackle harder difficulties. On paper, you control exactly how and where you write your candidates, rather than relying on an app's interface.

Understanding Difficulty Levels

Sudoku difficulty is not just about how many numbers are given at the start. It is determined by which solving techniques you need to complete the puzzle. Here is a quick breakdown, and you can read more in our complete difficulty levels guide.

Easy Puzzles

Easy sudoku puzzles give you plenty of starting numbers (typically 36 or more) and can be solved entirely using naked singles — the simplest technique where a cell has only one possible value. These are perfect for beginners, warm-ups, or quick solves during a coffee break.

Medium Puzzles

Medium puzzles require you to use hidden singles and basic scanning across rows, columns, and boxes. You will occasionally need to think about which numbers are missing from a particular region. Most casual solvers find this the sweet spot — challenging enough to be interesting, but not frustrating.

Hard Puzzles

Hard puzzles demand intermediate techniques like naked pairs and pointing pairs. You will almost certainly need pencil marks to track candidates. If you are comfortable with these techniques, hard puzzles offer a deeply satisfying challenge.

Expert and Evil Puzzles

Expert and evil puzzles require advanced strategies like X-Wing, Swordfish, and chain-based logic. These puzzles are designed for experienced solvers who enjoy working through complex logical deductions. Expect to spend 30 minutes to over an hour on a single puzzle.

Printable Sudoku Puzzles

Below are five puzzles at different difficulty levels. Each grid uses standard 9x9 sudoku format. A dot (.) represents an empty cell. To print, select the puzzle, copy it, and paste it into a text document — or simply use your browser's print function on this page.

Puzzle 1: Easy

+-------+-------+-------+
| 5 3 . | . 7 . | . . . |
| 6 . . | 1 9 5 | . . . |
| . 9 8 | . . . | . 6 . |
+-------+-------+-------+
| 8 . . | . 6 . | . . 3 |
| 4 . . | 8 . 3 | . . 1 |
| 7 . . | . 2 . | . . 6 |
+-------+-------+-------+
| . 6 . | . . . | 2 8 . |
| . . . | 4 1 9 | . . 5 |
| . . . | . 8 . | . 7 9 |
+-------+-------+-------+

Tip: Start by scanning each row and column for missing numbers. In an easy puzzle like this, most cells can be solved immediately with naked singles.

Puzzle 2: Medium

+-------+-------+-------+
| . . . | 6 . . | 4 . . |
| 7 . . | . . 3 | 6 . . |
| . . . | . 9 1 | . 8 . |
+-------+-------+-------+
| . . . | . . . | . . . |
| . 5 . | 1 8 . | . . 3 |
| . . . | 3 . 6 | . 4 5 |
+-------+-------+-------+
| . 4 . | 2 . . | . 6 . |
| 9 . 3 | . . . | . . . |
| . 2 . | . . . | 1 . . |
+-------+-------+-------+

Tip: Look for hidden singles — numbers that can only go in one place within a row, column, or box, even if the cell has multiple candidates.

Puzzle 3: Hard

+-------+-------+-------+
| . . . | . . 5 | . 8 . |
| . . . | 6 . 1 | . 4 3 |
| . . . | . . . | . . . |
+-------+-------+-------+
| . 1 . | 5 . . | . . . |
| . . . | 1 . 6 | . . . |
| 3 . . | . . . | . . 5 |
+-------+-------+-------+
| 5 3 . | . . . | . 6 1 |
| . . . | . . . | . . 4 |
| . . . | . . . | . . . |
+-------+-------+-------+

Tip: You will need pencil marks for this one. Write small candidate numbers in the corners of empty cells. Look for naked pairs and box-line reductions to eliminate candidates.

Puzzle 4: Expert

+-------+-------+-------+
| . . . | . . . | . 1 2 |
| . . . | . 3 5 | . . . |
| . . . | 6 . . | . . . |
+-------+-------+-------+
| . . . | . . . | . . . |
| 5 . 1 | . . . | 7 . 3 |
| . . . | . . . | . . . |
+-------+-------+-------+
| . . . | . . 6 | . . . |
| . . . | 5 4 . | . . . |
| 4 7 . | . . . | . . . |
+-------+-------+-------+

Tip: Expert puzzles often require techniques like X-Wing patterns. Be methodical with your pencil marks and look for patterns across multiple rows and columns simultaneously.

Puzzle 5: Evil

+-------+-------+-------+
| . . . | . . . | . . . |
| . . . | . . 3 | . 8 5 |
| . . 1 | . 2 . | . . . |
+-------+-------+-------+
| . . . | 5 . 7 | . . . |
| . . 4 | . . . | 1 . . |
| . 9 . | . . . | . . . |
+-------+-------+-------+
| 5 . . | . . . | . 7 3 |
| . . 2 | . 1 . | . . . |
| . . . | . 4 . | . . 9 |
+-------+-------+-------+

Tip: This puzzle will test your full range of techniques. You may need chain-based logic or coloring. Take your time and do not guess — every cell can be deduced logically. Read our advanced strategies guide if you get stuck.

Tips for Solving Sudoku on Paper

Solving on paper is a different experience from using an app, and it comes with its own set of best practices. Here are the most important ones.

Use a Pencil, Not a Pen

This might seem obvious, but many people reach for whatever writing instrument is nearby. Always use a pencil with a good eraser. You will make mistakes, and you will need to erase pencil marks as you eliminate candidates. A mechanical pencil with a 0.5mm lead is ideal for writing small candidate numbers.

Master Pencil Mark Notation

For puzzles harder than easy, pencil marks are essential. The two main systems are full notation (writing all candidates in each cell) and Snyder notation (only marking candidates that appear exactly twice in a box). Snyder notation is faster and less cluttered, making it the preferred choice for speed solvers.

Scan Systematically

Do not jump around the grid randomly. Develop a scanning pattern. Many experienced solvers start by scanning for each number (1 through 9) across the entire grid, then switch to scanning by region. This systematic approach ensures you do not miss obvious placements.

Work Through Digits in Order

A common strategy is to pick the digit that appears most frequently as a given and try to place it in all remaining rows, columns, and boxes. Then move to the next most frequent digit. This "digit-first" approach is often faster than scanning cell by cell.

Take Breaks on Hard Puzzles

If you are stuck on a hard or expert puzzle, walk away for a few minutes. When you come back, you will often see patterns you missed before. This is a well-documented phenomenon in cognitive science — your subconscious continues processing the problem even when you are not actively thinking about it.

Printable vs. App-Based Sudoku

Both formats have their strengths. Here is how they compare across the dimensions that matter most to solvers.

Paper sudoku excels for relaxed, offline solving and when you want a break from screens. Digital sudoku wins for convenience, variety, and competitive play. Many dedicated solvers use both — paper for evening relaxation and apps for competitive matches during the day.

If you enjoy the competitive side of sudoku, Sudoku Royale takes digital sudoku to the next level with real-time battle royale matches where up to 10 players compete on the same board. It is a completely different experience from solo paper solving, and the two complement each other well. Practice your techniques on paper, then test your speed against real opponents in battle royale mode.

How to Print These Puzzles

The grids above are formatted in plain text using a monospace font, which means they will print cleanly from any browser. Here is the simplest method:

1. Browser print: Press Ctrl+P (or Cmd+P on Mac) to open your browser's print dialog. The grids will render clearly in the printout.
2. Copy and paste: Select a single grid, copy it, and paste it into a text editor or word processor. Use a monospace font like Courier New at 14pt or larger for best readability.
3. Screenshot: Take a screenshot of the grid and print the image. This preserves the formatting exactly as you see it on screen.

For the best paper solving experience, print at 100% scale on standard letter (8.5 x 11 inches) or A4 paper. This gives you plenty of room to write pencil marks in each cell.

Building a Daily Sudoku Practice Routine

Printable sudoku is an excellent way to build a daily sudoku habit. Here is a simple progression plan for improving your skills over time.

1. Week 1-2: Solve one easy puzzle per day. Focus on clean technique and finding naked singles quickly.
2. Week 3-4: Move to medium puzzles. Start using pencil marks for cells where you cannot determine the value immediately.
3. Month 2: Tackle hard puzzles. Learn naked pairs and pointing pairs if you have not already.
4. Month 3+: Attempt expert puzzles. Study X-Wing and other advanced patterns.

Time yourself on each puzzle and keep a log. You will be surprised how quickly your solving speed improves with consistent daily practice. Once you are comfortable with your speed, consider testing yourself against other players in Sudoku Royale's competitive modes to see how you stack up.

Where to Find More Printable Puzzles

We add new puzzles to this page regularly, but if you need a large volume of printable sudoku (for classrooms, puzzle books, or personal use), there are several good sources. Websites dedicated to printable sudoku typically offer PDFs with multiple puzzles per page and organized by difficulty. Some even include solutions on separate pages so you can check your work without spoiling the puzzle.

For an endless supply of puzzles at any difficulty, digital apps are hard to beat. You can learn more about how these puzzles are created in our article on how sudoku puzzles are generated, and if you are curious about the algorithms that verify unique solutions, check out our guide to how sudoku solvers work.