Sudoku
Online sudoku with new puzzles, check and hints.
Sudoku
Easy / Medium / Hard puzzles generated locally.
What can you do with it?
Sudoku
Online sudoku with new puzzles, check and hints.
Instant feedback
See scores, previews and status on-page
Easy to share
Great for demos, events or personal saves
Zero install
Open in the browser and go
Take results away
Copy, export or keep local records
Local-first
Runs locally in the browser; no business-server upload.
Why choose this tool?
Sudoku
Online sudoku with new puzzles, check and hints.
Play
Lightweight entertainment build
Visible state
Scores, steps or previews stay in view
Clear privacy
Runs locally in the browser; no business-server upload.
How to use?
Start a round
Open the workspace and prepare inputs or a new round
Follow the rules
Use the toolbar and board to complete the flow
Save or restart
Copy outputs, reset, or start again
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FAQ
- Is my data uploaded?
- Local-first by default. Game state, lists and generated pages stay in the browser.
- How does it compare to desktop apps?
- It is a lightweight online build for quick use—not a competitive engine.
- Mobile support?
- Works on common mobile browsers; complex boards are better on desktop.
- Can I keep results?
- Copy HTML/JSON/text; some games store a best score in localStorage.
Best free online Sudoku in 2026
Sudoku is a browser puzzle game you can open in the browser. Online sudoku with new puzzles, check and hints. No download required, and easy to share.
What can you use it for?
- Train logic, memory and spatial skills
- Climb difficulty/levels gradually
- Perfect for short sessions
- No install required
Why this online Sudoku?
- Adjustable levels for every skill
- Clear feedback and cheap restarts
- Local processing keeps data private
- Easy to bookmark and share
How to start
- Choose a difficulty or level
- Complete the goal for the board
- Use hint/undo/restart if stuck
- Move up when you clear it
Who is it for?
Whether you want a two-minute break or a focused practice session, Sudoku fits. Students, office workers and casual players can treat it as a lightweight training board: open the page, pick a difficulty, and play.
Tips
- On desktop, keep focus on the game area before using keyboard controls.
- Best scores are usually stored in localStorage and stay on this browser.
- Restart often—short loops are the fastest way to improve.
Related games
If you enjoy Sudoku, also try: Chinese Chess vs AI, Go vs AI, Gomoku vs AI, Chess vs AI, Aeroplane Chess vs AI, Chinese Checkers vs AI.
Start a round of Sudoku now, then level up the difficulty as you get comfortable.