About Sudoku
Sudoku is the world's most popular number puzzle game that challenges your logical thinking and problem-solving skills! Fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 subgrids contains all digits from 1 to 9.
This classic brain training game offers multiple difficulty levels to suit players of all skill levels. Whether you're a beginner learning the basics or an expert seeking the ultimate challenge, our Sudoku puzzle has something for everyone.
Game features include:
- Multiple difficulty levels - Easy, Medium, Hard, and Expert
- Clean interface - Clear 9x9 grid with highlighted sections
- Number validation - Instant feedback on incorrect placements
- Hint system - Get help when you're stuck
- Note-taking - Add pencil marks for possible numbers
- Unlimited puzzles - Generate new puzzles anytime
- Timer function - Track your solving speed
How to Play Sudoku
Click on any empty cell and select a number from 1-9. Your goal is to fill the entire 9×9 grid following these rules: each row must contain all numbers 1-9, each column must contain all numbers 1-9, and each of the nine 3×3 boxes must contain all numbers 1-9. Use logical deduction to determine which numbers can go in each cell. You can use the note feature to mark possible numbers in cells. The puzzle is complete when all cells are filled correctly!
Frequently Asked Questions
Is Sudoku free to play?
Yes! Sudoku is completely free to play online in your web browser. No downloads, no registration required. Just click play and start solving number puzzles instantly.
Can I play Sudoku on mobile?
Absolutely! Sudoku is fully optimized for mobile devices including smartphones and tablets. The touch-friendly interface works seamlessly on both iOS and Android devices through your mobile browser.
Do I need to download Sudoku?
No download needed! Sudoku runs directly in your web browser using HTML5 technology. This means you can play instantly without installing anything on your device.
What are the best tips for playing Sudoku?
Start with easier puzzles to learn the logic. Look for cells with only one possible number. Use the process of elimination systematically. Make notes of possible numbers in each cell. Focus on completing rows, columns, or 3x3 boxes that are nearly full first.
Can I play Sudoku offline?
Sudoku requires an internet connection to load initially since it's a browser-based game. However, once loaded, you may be able to continue playing if your connection temporarily drops, depending on your browser's caching.
