Free Online Sudoku Game
Challenge yourself with our free online Sudoku game. Choose from multiple difficulty levels, use note-taking features, and track your progress with a built-in timer. Perfect for both beginners and experienced players, with no registration required.
Multiple Difficulties
Choose from Easy to Expert levels to match your skill.
Smart Features
Note-taking mode, undo/redo, and progress tracking.
Save & Share
Export puzzles to continue later or share with friends.
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How to Play:
- • Click a cell and type a number (1-9)
- • Toggle Notes Mode to add small numbers
- • Use Backspace to clear a cell
- • Each row, column, and 3x3 box must contain numbers 1-9
- • Dark numbers are fixed and can't be changed
- • Import/export puzzles to save or share
How to Play Sudoku
- Fill in the empty cells with numbers from 1 to 9
- Each row must contain all numbers from 1 to 9
- Each column must contain all numbers from 1 to 9
- Each 3x3 box must contain all numbers from 1 to 9
- Use the note-taking feature to keep track of possibilities
- Start with easier puzzles and work your way up
Features
- Four difficulty levels: Easy, Medium, Hard, and Expert
- Note-taking mode for advanced strategies
- Timer to track your progress
- Undo/redo functionality
- Import and export puzzles
- Mobile-friendly design
- No registration needed
- Works offline
Tips for Success
- Start with the most obvious numbers
- Use the process of elimination
- Look for patterns in rows, columns, and boxes
- Take advantage of the note-taking feature
- Practice regularly to improve your skills
- Learn advanced techniques as you progress
Benefits of Playing Sudoku
- Improves memory and logical thinking
- Enhances problem-solving skills
- Reduces stress and anxiety
- Keeps your mind sharp and focused
- Provides a sense of accomplishment
- Perfect for daily brain training