--- title: "Sudoku: play free online" description: "Free online sudoku: 6 levels, hints that teach and a daily challenge. Play free in your browser, no download and no account. A round takes 5–15 minutes." url: https://games.klyo.pl/sudoku/ canonical: https://games.klyo.pl/sudoku/ type: gra language: en author: klyo organization: Klyo Illia Krasnopolskyi (NIP 7822656871), Łódź, Poland contact: kontakt@klyo.pl updated: 2026-10-18 llms: https://games.klyo.pl/llms.txt --- ![Sudoku: gra w przeglądarce od twórcy Klyo](https://games.klyo.pl/foto/zrzut-gra-sudoku-2-1200.a8c4626c.webp) Play Sudoku The game runs right here. Nothing to install, no account needed. [JavaScript is turned off in your browser. Open Sudoku in a new tab.](https://g-sudoku-2.klyo.pl/) Sudoku Favourite Share [New tab](https://g-sudoku-2.klyo.pl/) Record a clip Full screen # Sudoku: play free online ## Free online sudoku: 6 levels, hints that teach and a daily challenge [Puzzle games](https://games.klyo.pl/puzzle/) [Sudoku online](https://games.klyo.pl/#f-kat-sudoku) [5-minute fun](https://games.klyo.pl/mood/5-minut/) [One thumb](https://games.klyo.pl/mood/jeden-kciuk/) [Train your brain](https://games.klyo.pl/mood/rusz-glowa/) [Games for kids](https://games.klyo.pl/kids/) round 5–15 minutes Age: everyone 22 plays Game by [Klyo](https://games.klyo.pl/developer/xanyrik/) Free online Sudoku, right in your browser, with no download and no account. The classic 9×9 grid: fill in the digits 1 to 9 so that none repeats in a row, a column or a 3×3 box. [Edit the description](https://dev.klyo.pl/#popraw=sudoku-2) - **5–15 minutes** one round - **touch · mouse** controls - **weekly tournament** leaderboard and trophies - **on your account** progress on every device - **everyone** age - **browser, phone** works on - **right away** no download, no account - **22** plays [Watch the gameplay on YouTube](https://www.youtube.com/watch?v=4IJQdn2Lnc4) ## Leaderboard Today7 daysAll timeTournament 1. Play a round. The first score will be yours. Your name on the board [All records](https://games.klyo.pl/records/#sudoku-2) ## Your rating ## How to play Sudoku 1. On a computer: 1–9 enters a digit, N notes, Backspace erase, Z undo, H hint, Esc pause — or the mouse. 2. On a phone: Tap a cell, then a digit on the keypad under the board. [Sudoku rules](https://games.klyo.pl/rules/sudoku/) ## About Sudoku Every puzzle has exactly one solution, so you reach the end by logic, never by guessing. ### How to play sudoku: the rules Sudoku has three rules and nothing else. Every row holds the digits 1 to 9 once. Every column holds them once. Every one of the nine 3×3 boxes holds them once. The given digits stay where they are and you fill in the empty cells. There is no maths involved: the digits could just as well be letters or colours, all that matters is that each one appears once in every row, column and box. ### Sudoku difficulty levels There are six levels: Easy (40 given cells), Medium (34), Hard (29), Expert (26), Master (24) and Extreme (22). The level is not a label. The generator checks which technique a grid really needs, from naked singles and hidden singles through pairs and pointing candidates to deeper methods on the master levels. Hard is really hard, and Easy works for your very first game. ### Sudoku tips for beginners Start with the digit that already appears most often and look at the boxes where it is still missing: often only one cell in such a box can take it. This is called scanning. A cell with only one possible digit left is a naked single, and a digit that fits in only one cell of a row, column or box is a hidden single. When the easy moves run out, write candidates as pencil notes and look for two cells in the same row, column or box that share the same two candidates: those two digits belong there, so you can remove them from the other cells of that unit. Never guess. If you are stuck, a hint shows the next logical step instead of the answer. ### Daily sudoku challenge One grid for every player in the world, the same for the whole day. Solve it and build a daily streak: the statistics track your win streak, best streak, win rate, average time and the record for every level. ### Hints that teach instead of solving for you Press Hint and the game shows the simplest logical step and highlights the cells that prove it, for example "in this row, 7 fits only here". You get three hints per game. Three mistakes end the game, but you can take a second chance after watching a short ad. ### Controls on a phone and a computer For comfortable play there are pencil notes with auto fill and clean up after each entry, undo, erase, instant mistake checking, highlighting of the same digits, large digits, a timer you can hide, a light, dark or system theme, sound and vibration. An interrupted game waits under Continue. On a computer you play with the keyboard: 1 to 9 enters a digit, N toggles notes, Backspace erases, Z undoes, H gives a hint and Esc pauses. On a phone you tap, and the board fits the screen in portrait and landscape. ### Scores and the leaderboard Your score depends on the level, time, mistakes and hints used, and the best games go to the klyo records board. See who leads today and try to overtake them. ## Do I need to install anything No. Sudoku runs in the same browser tab you are reading now. There is no store download, no account and no e-mail to give. The game is free and stays free. Your score and progress are saved on your device, not only on our server, so you see your record when you come back. ## Questions about Sudoku ### Is Sudoku free? Yes. Sudoku is completely free: no in-game payments, no premium account and no trial that runs out. ### Does Sudoku work on a phone? Yes, in the browser on phones and tablets. Controls: Tap a cell, then a digit on the keypad under the board. On a computer: 1–9 enters a digit, N notes, Backspace erase, Z undo, H hint, Esc pause — or the mouse. ### How long is a round of Sudoku? Usually 5–15 minutes. The game keeps your best score on your device, so you can come back any time. ### Do I have to download Sudoku? No. The game opens from a link in this tab, on a phone or a computer. ## Controls - **On a phone:** Tap a cell, then a digit on the keypad under the board - **On a computer:** 1–9 enters a digit, N notes, Backspace erase, Z undo, H hint, Esc pause — or the mouse - **A round takes:** 5–15 minutes - **Age:** everyone - **Price:** free, no account ## Categories [Puzzle games](https://games.klyo.pl/puzzle/), [Sudoku online](https://games.klyo.pl/#f-kat-sudoku), [5-minute fun](https://games.klyo.pl/mood/5-minut/), [One thumb](https://games.klyo.pl/mood/jeden-kciuk/), [Train your brain](https://games.klyo.pl/mood/rusz-glowa/) [Report a problem](https://games.klyo.pl/report/) I am a parent and this game worries me ## Comments ## Play next [See all](https://games.klyo.pl/) Show others Random next Follow the developer Suggestions change after every round, or right away after “Show others”. - [![2048 Blockfall: gra w przeglądarce od twórcy Klyo](https://games.klyo.pl/foto/zrzut-gra-2048-blockfall-800.d6605b29.webp) 2–10 minutes **2048 Blockfall** Puzzle 2–10 minutes portrait & landscape 122 plays Free 2048 online with falling blocks: merge numbers, no download.](https://games.klyo.pl/2048-blockfall/) - [![CRUNCH: gra w przeglądarce od twórcy Klyo](https://games.klyo.pl/foto/zrzut-gra-crunch-zagraj-za-darmo-online-800.c28102b7.webp) 2–5 minutes **CRUNCH** Puzzle 2–5 minutes portrait no reading Free merge puzzle: swipe, join blocks and crunch them with one thumb.](https://games.klyo.pl/crunch-zagraj-za-darmo-online/) - [![Mahjong Sanctuary: gra w przeglądarce od twórcy Klyo](https://games.klyo.pl/foto/zrzut-gra-mahjong-sanctuary-800.e8ff51f5.webp) 5–15 minutes **Mahjong Sanctuary** Mahjong 5–15 minutes portrait & landscape Free Mahjong Solitaire online: 144 tiles, hints, undo and a daily board.](https://games.klyo.pl/mahjong-sanctuary/) - [![Warcaby: gra w przeglądarce od twórcy Rasalhague](https://games.klyo.pl/foto/zrzut-gra-warcaby-800.6e0f6f8e.webp) 5–15 minutes **Checkers** Puzzle 5–15 minutes Checkers against the computer, hotseat and online.](https://games.klyo.pl/checkers/) - [![Memory: gra w przeglądarce od twórcy Klyo](https://games.klyo.pl/foto/zrzut-gra-memory-800.f4859ac4.webp) 2–5 minutes **Memory** Memory 2–5 minutes portrait no reading Free memory game online: find 8 pairs among 16 cards in fewest moves.](https://games.klyo.pl/memory/) - [![Pasjans Pająk: gra w przeglądarce od twórcy Klyo](https://games.klyo.pl/foto/zrzut-gra-pasjans-pajak-800.057ae24f.webp) 5–15 minutes **Spider Solitaire** Solitaire 5–15 minutes portrait & landscape Free Spider Solitaire online: 1, 2 or 4 suits and a daily deal.](https://games.klyo.pl/spider-solitaire/) ## Gameplay [Watch the full clip](https://games.klyo.pl/pl/spolecznosc/t/25/) [![Sudoku](https://games.klyo.pl/foto/zrzut-gra-sudoku-2-800.a31ff905.webp)](https://games.klyo.pl/pl/spolecznosc/t/25/) ## Before you add anything: the klyo games rules version 2026-09-07 · [Full terms](https://games.klyo.pl/developer-terms/) Short and plain. The full text is in the developer terms; you accept once per version and the record stays with your account. - **Yours, not someone else's.** You upload only games and content you hold the rights to. The rights stay yours; you grant us a non-exclusive licence to show them. I confirm: I hold the rights to everything I upload here. - **No malicious code, no third-party ads.** Crypto miners, tab hijacking, phishing, foreign ad networks: the package is rejected, a repeat closes the account. I confirm: my package has no malicious code and no third-party ads. - **Players may record your game.** By publishing, you agree that players record clips from your game and show them on klyo — always with the game's name and a link to it. The rights to the game stay yours: this permits showing GAMEPLAY, not copying the game. Every clip sends players straight to you. - **No rating trades.** Asking for a playtest and honest feedback: yes. Trading stars on Google Play and the App Store: no, it breaks the stores' rules. - **Content 12+.** No pornography, hate or unlabelled realistic violence. The content questionnaire next to a game must tell the truth. - **Reports and appeals.** Anyone can report a violation; we take content down within 24 hours with a statement of reasons, and you have two working days to appeal. - **Money.** 70% of the ad revenue next to your game, bank transfer from 100 PLN, details only at payout, never an ID scan. - **It is your gameplay.** You post a recording from a game you played yourself. No one else's videos, nothing taken from other services. - **Everyone sees the caption.** No insults, threats or personal data — yours or anyone else's. The clip and the caption are public. - **Content 12+.** No pornography, hate or realistic violence. The portal is for players of every age. - **Reports.** Anyone can report a violation. We take content down within 24 hours with reasons, and you have two working days to appeal. I have read and accept the rules Tick that you accept the rules. Not now Accept ## More games by this creator [See all](https://games.klyo.pl/developer/xanyrik/) - [![Kółko i krzyżyk: gra w przeglądarce od twórcy Klyo](https://games.klyo.pl/foto/zrzut-gra-kolko-i-krzyzyk-800.d594bf13.webp) new 30 seconds to 1 minute, a run up to 10 minutes **Tic Tac Toe** Puzzle 30 seconds to 1 minute, a run up to 10 minutes portrait & landscape Tic Tac Toe on squared paper: against the computer, with a friend or online.](https://games.klyo.pl/tic-tac-toe/) - [![Saper: gra w przeglądarce od twórcy Klyo](https://games.klyo.pl/foto/zrzut-gra-saper-800.c60de309.webp) new 1 to 5 minutes **Minesweeper** Puzzle 1 to 5 minutes portrait & landscape Classic Minesweeper in your browser: clear the board and flag the mines.](https://games.klyo.pl/minesweeper/) - [![Nardy: gra w przeglądarce od twórcy Klyo](https://games.klyo.pl/foto/zrzut-gra-nardy-800.54bfde89.webp) new **Backgammon** 2 player portrait & landscape Play backgammon or Long Nardy on a carved wooden board.](https://games.klyo.pl/nardy/) - [![STUNTYARD: gra w przeglądarce od twórcy Klyo](https://games.klyo.pl/foto/zrzut-gra-stuntyard-800.2b2ae0fe.webp) in progress 2 minutes **STUNTYARD** Driving 2 minutes portrait & landscape 3D car stunt park with ramps, trampolines, flips and combos.](https://games.klyo.pl/stuntyard/) - [![AIRFLIP: gra w przeglądarce od twórcy Klyo](https://games.klyo.pl/foto/zrzut-gra-airflip-800.dd8218f1.webp) in progress 1–3 minutes **AIRFLIP** Driving 1–3 minutes portrait & landscape Car stunts on a mega ramp above the clouds: jump, flip, land on target.](https://games.klyo.pl/airflip/) - [![NIGHTLANE: gra w przeglądarce od twórcy Klyo](https://games.klyo.pl/foto/zrzut-gra-nightlane-800.dc7444cc.webp) in progress 1–5 minutes **NIGHTLANE** Racing 1–5 minutes portrait & landscape Night street racing in the city: dodge traffic by a hair.](https://games.klyo.pl/nightlane/) - [![FRONTBREAK: gra w przeglądarce od twórcy Klyo](https://games.klyo.pl/foto/zrzut-gra-frontbreak-800.17aaceae.webp) 10–20 minutes **FRONTBREAK** Shooting 10–20 minutes Free online FPS shooting game with no sign-up: 5v5 tactical shooter.](https://games.klyo.pl/frontbreak/) - [![Szachy: gra w przeglądarce od twórcy Klyo](https://games.klyo.pl/foto/zrzut-gra-szachy-800.041d5151.webp) 10–30 min **Chess** 2 player 10–30 min portrait & landscape Free online chess vs computer, 2 player and chess puzzles.](https://games.klyo.pl/chess/) ## More games Previews: automatic ### That is everything for now We have 35 games today and you have seen them all. This portal grows from developers, not from purchases. If you make games, yours will stand next to these. [Watch game clips](https://games.klyo.pl/clips/) [Back to the top](https://games.klyo.pl/sudoku/#tresc) ## Made a similar game? Publish it next to this one One ZIP, one form and your own address within minutes. The rights stay yours, the ad stands beside the game and never in front of it, and 70% of the ad revenue next to your game comes back to you every month. [How to publish a game](https://games.klyo.pl/for-developers/) [Developer studio](https://dev.klyo.pl/) --- Source: https://games.klyo.pl/sudoku/ · Built and run by klyo, a Polish technology company (Łódź) · Contact: kontakt@klyo.pl · Index for language models: https://games.klyo.pl/llms.txt