Generating puzzle...
Sudoku is an engaging number-based logic puzzle that sharpens your thinking, improves focus, and boosts concentration. On our website, you can play Sudoku online for free — no downloads or registration required. Choose your difficulty level, solve puzzles every day, and become a true Sudoku master!
How to Play Sudoku
Classic Sudoku consists of a 9x9 grid divided into nine 3x3 boxes. Your goal is to fill all empty cells so that each row, each column, and each 3x3 box contains every digit from 1 to 9 exactly once. Sounds easy? Give it a try — you’ll quickly see how addictive and rewarding it can be!
Choose Your Difficulty Level
- Easy – Perfect for beginners. Learn the basics with less effort.
- Medium – A balanced challenge for a relaxed brain workout.
- Hard – A real test for those who enjoy strategic thinking.
- Expert – Minimal hints, maximum brainpower. Only for true enthusiasts!
Why Play Sudoku Online With Us?
- 🚀 Instant start – play directly in your browser.
- 📱 Cross-device friendly – desktop, tablet, or phone.
- 🧠 Mental training – boost memory, logic, and attention.
- 💡 Hint mode – stuck on a move? We’ll help you learn and progress.
- 🌙 Comfort features – dark mode, timer, undo, and more.
Tips for Beginners
| Tip |
Why It Matters |
| Start with easy puzzles |
Beginning with simple puzzles helps you understand the game’s rules and logic patterns without frustration. It’s the best way to build confidence step by step. |
| Use hints and read the explanations |
Hints not only show the right number to place, but also explain the reasoning behind the move. This makes learning faster and more intuitive. |
| Examine filled rows carefully |
Pay attention to numbers already placed. Completed rows, columns, or blocks can help eliminate possibilities and reveal where other numbers should go. |
| Look for obvious numbers |
Sometimes, only one number can fit in a certain cell. Spotting and solving these first gives you momentum and unlocks more of the puzzle. |
| Use notes to track possibilities |
Notes let you write down which numbers might fit in a cell. This helps you keep track and figure out the right answer more easily. |
| Don’t be afraid to undo moves |
Made a wrong move? No problem. Use the undo button to take a step back, rethink your approach, and learn from the mistake. |
| Practice regularly |
The more you play, the better you get. Daily practice improves your concentration, memory, and ability to spot logical patterns quickly. |
Play Now
Enjoy Sudoku anytime. Just open the page and dive into the world of numbers. Good luck!
Frequently Asked Questions
1
How do I start a new game or restart the current Sudoku puzzle?
Use the built-in control buttons: click “Restart” to clear the board and start the current puzzle over. To load a completely new puzzle, click “New Game” — a fresh Sudoku will be generated at your chosen difficulty level.
2
Can I play Sudoku on a phone or tablet?
Yes, our website works on all devices. The interface automatically adjusts to your screen size, so it's convenient to play on a computer, smartphone, or tablet.
3
What difficulty levels are available in Sudoku?
There are four difficulty levels: Easy, Medium, Hard, and Expert. Easy is great for beginners, while Expert is designed for experienced players.
4
Are there hints if I get stuck?
Yes, you can use the hint feature. If you're stuck, click the hint button — the game will reveal the correct number for one empty cell and explain why it fits, helping you continue.
5
Can I make pencil notes in Sudoku (small numbers in cells)?
Yes, our online Sudoku includes a notes feature. You can write multiple small candidate numbers in a cell to keep track of possible options before entering your final answer.
6
Will my progress be saved if I close the page?
Unfortunately, your current game progress won’t be saved after closing the page. We recommend finishing the puzzle before leaving or keeping the tab open if you want to return later.
7
Will I eventually run out of available puzzles?
No worries — puzzles are generated automatically. Each new game is unique, so you can play as much as you like. Sudoku puzzles never repeat, and there’s always a new challenge waiting.
8
What should I do if Sudoku won’t load?
Try refreshing the page and make sure you have a stable internet connection. If that doesn’t help, check that you’re using a modern browser with JavaScript enabled — our site works best in up-to-date versions of Chrome, Firefox, Safari, or Edge.
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