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Sudoku

Play free Sudoku games with notes and hints

Play Sudoku online in your browser, fill every row, column, and 3x3 box with digits 1 through 9, then settle into a clean solving rhythm.

Tap any open cell, then use the keypad or number keys. Press M or tap Notes for pencil marks.
Wrong digits are rejected, so keep pressing forward instead of cleaning up bad guesses.
Hint reveals add time, and both best times and active board progress save on this device.

How to play Sudoku

Learn the controls Tap any open cell, then use the keypad or number keys. Press M or tap Notes for pencil marks.
Step 2 Wrong digits are rejected, so keep pressing forward instead of cleaning up bad guesses.
Track your result Hint reveals add time, and both best times and active board progress save on this device.

Sudoku — frequently asked questions

Is Sudoku free to play?

Yes. Sudoku is completely free to play on Poket52. There are no downloads, sign-ups, or in-app purchases required.

Can I play Sudoku on mobile?

Yes. Sudoku runs in any modern browser on both mobile and desktop. Just open the page and start playing — no app install needed.

Do I need to download anything to play Sudoku?

No. Sudoku is a browser game that plays instantly without any download. Open the game page on Poket52 and it loads directly in your browser.

Does Sudoku work offline?

Sudoku needs an internet connection to load initially, but once loaded, most game sessions continue without needing constant connectivity.

How hard is Sudoku?

Sudoku is designed to be accessible for beginners while offering enough depth for experienced puzzle solvers. Start at your own pace and the challenge grows as you improve.