Sudoku
- Is Sudoku free? Yes — 100% free, no payment.
- Download needed? No — it plays in your browser.
- Works on mobile? Yes — phones & tablets, full touch.
- Session length? About 5–20 minutes.
- Players? Single player.
Classic 9x9 Sudoku with three difficulties, pencil notes, hints, conflict highlighting, a mistake counter and a running timer.
About Sudoku
Sudoku is a logic puzzle played on a 9x9 grid split into nine 3x3 boxes. Your goal is to fill every empty square so that each row, each column and each box contains the digits 1 through 9 exactly once. Every puzzle here is freshly generated from a complete valid solution and then carefully carved out so that it has one and only one answer, verified by a solver before you ever see it. Pick Easy, Medium or Hard, jot down candidate notes, and chase a clean solve with no mistakes and your fastest time.
Unblocked Chromebook No Download Mobile For Kids Brain Games
How to play Sudoku
Tap or click an empty cell to select it, then choose a digit from the number pad to fill it. Use Notes mode to pencil in candidates, the Erase button to clear a cell, and Hint if you get stuck. Complete the whole grid correctly to win and try to beat your best time per difficulty.
Controls
Mouse/touch: tap a cell, then tap a number on the pad; use the Notes, Erase, Hint and New buttons. Keyboard: Arrows or WASD move the selected cell, 1-9 enter a number, 0/Backspace erase, N toggles notes, H gives a hint, M mutes.
Tips & tricks
- Start with rows, columns or boxes that already have the most numbers filled in, where only a couple of options remain.
- Turn on Notes mode and pencil in every candidate for tricky cells, then erase them as you eliminate possibilities.
- Look for a digit that can only go in one spot within a box, even if that cell has several other candidates.
- Tap a filled number to highlight every matching digit on the board, which makes spotting the missing ones much faster.
- Save the Hint button for genuine dead ends, since each hint counts against your mistake total.
Game features
- 100% free to play — no payment, ever
- Plays instantly in your browser — no download or install
- Works on desktop, phone and tablet
- No sign-up and no email required
- Built with HTML5 — runs on any modern browser
- Single-player — play at your own pace
Frequently asked questions
How do you play Sudoku?
Tap or click an empty cell to select it, then choose a digit from the number pad to fill it. Use Notes mode to pencil in candidates, the Erase button to clear a cell, and Hint if you get stuck. Complete the whole grid correctly to win and try to beat your best time per difficulty.
What are the controls for Sudoku?
Mouse/touch: tap a cell, then tap a number on the pad; use the Notes, Erase, Hint and New buttons. Keyboard: Arrows or WASD move the selected cell, 1-9 enter a number, 0/Backspace erase, N toggles notes, H gives a hint, M mutes.
Is Sudoku free to play online?
It is. Sudoku costs nothing to play here — no account, no app store, no paywall. Just open the page and go.
Can I play Sudoku on mobile?
Yes. Sudoku works in any modern mobile browser with full touch support, so it plays on phones and tablets as well as on a laptop or desktop — nothing to install.
Who made Sudoku?
Sudoku was built in-house by the 360 PlayZone team using open web technology (HTML5), which is why it runs instantly without any download.
Is Sudoku unblocked at school or work?
Sudoku is a plain web page — no plugin, no installer, no app store — so it loads on a Chromebook or a locked-down school or office laptop the same way any other page does. Whether it opens comes down to your network's filter rather than the game itself, and there is nothing to install either way.
How many players is Sudoku?
Sudoku is a single-player game. You are playing against the game and against your own best score, at whatever pace suits you.
Does Sudoku save my progress?
Yes. Sudoku keeps your best score and progress in your own browser's local storage, so it is still there when you come back on the same device. Nothing is uploaded and no account is involved — clearing your browser data is what resets it.
How do you get better at Sudoku?
Start with rows, columns or boxes that already have the most numbers filled in, where only a couple of options remain. Turn on Notes mode and pencil in every candidate for tricky cells, then erase them as you eliminate possibilities. The full tips list on this page covers the rest.
What kind of game is Sudoku?
Sudoku is a free puzzle game that runs in the browser. Classic 9x9 Sudoku with three difficulties, pencil notes, hints, conflict highlighting, a mistake counter and a running timer. A typical session runs about 5–20 minutes.
Embed Sudoku
Want Sudoku on your own site, blog or classroom page? It's free to embed — copy this code:
<iframe src="https://360playzone.com/game/sudoku" width="640" height="480" style="border:0;max-width:100%" allowfullscreen loading="lazy" title="Sudoku"></iframe> <p>Free Sudoku game by 360 PlayZone</p>
More free puzzle games
Sudoku is one of 58 free puzzle games on 360 PlayZone. Browse the whole Puzzle collection, try Bridge Builder next, or head back to the home page to explore every category. You might also like our games like Sudoku roundup.
