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Sudoku Online

Play Sudoku online for free. Solve classic 9x9 Sudoku puzzles with multiple difficulty levels, hints, timer, and mistake tracking. Improve your logic skills and challenge your brain directly in your browser.

sudo ./sudoku --difficulty=novice
Time
00:00
Mistakes
0 / 3
Level
Novice
generating puzzle…

Permission level

Novice ≈46 clues
1510

Controls

Undo
Notes
... Hint
Erase
Process exited

Solved

Every row, column and block checks out.

00:00
Time
0
Mistakes
1
Level

Frequently Asked Questions

Is Sudoku free to play?

Yes. You can play Sudoku online for free directly in your web browser without downloading or installing anything.

How do I play Sudoku?

Fill the 9×9 grid with numbers from 1 to 9. Each row, column, and 3×3 box must contain every number only once.

Can I play Sudoku on mobile?

Yes. This Sudoku game is optimized for smartphones, tablets, laptops, and desktop browsers with touch and mouse controls.

Do I need to download Sudoku?

No. The game runs directly in your browser, allowing you to start solving puzzles instantly without installing any application.

What difficulty levels are available?

This Sudoku game includes multiple difficulty levels, from beginner-friendly puzzles to extremely challenging levels for experienced players.

Does Sudoku improve brain skills?

Yes. Sudoku helps train logical thinking, concentration, memory, problem-solving skills, and pattern recognition.

Can beginners learn Sudoku easily?

Yes. Beginners can start with easy puzzles and gradually improve their skills by learning number patterns and logical strategies.

Does this Sudoku game have hints?

Yes. You can use hints to reveal helpful moves when you are stuck while solving a puzzle.