--- title: "Games like Sudoku: 4 free daily logic puzzles · SIWA" description: "Love Sudoku? A daily 9×9 Sudoku and a 6×6 mini Sudoku, plus two logic puzzles in the same spirit. Free, in the browser, no sign-up needed." canonical_url: "https://dev.siwa.io/en/guides/jeux-comme-sudoku" last_updated: 2026-10-27 locale: en meta: "og:description": "Love Sudoku? A daily 9×9 Sudoku and a 6×6 mini Sudoku, plus two logic puzzles in the same spirit. Free, in the browser, no sign-up needed." "og:image": "https://dev.siwa.io/og/en/sudoko.jpg?v=c98ad7d0" "og:image:alt": "Sudoko · The classic 9×9 puzzle" "og:image:height": "630" "og:image:type": image/jpeg "og:image:width": "1200" "og:title": "Games like Sudoku: 4 free daily logic puzzles" "twitter:image": "https://dev.siwa.io/og/en/sudoko.jpg?v=c98ad7d0" "twitter:image:alt": "Sudoko · The classic 9×9 puzzle" --- > Index of every page on this site: [llms.txt](https://dev.siwa.io/llms.txt) Alternative # Games like Sudoku: 4 free daily logic puzzles If you love Sudoku, Sudoko follows the classic rules on a daily 9×9 grid, and Sudolito offers a quick 6×6 version. Binero and Bouclo extend the same pleasure of pure deduction with different rules, with a new free grid every day. Updated October 27, 2026 [Play Sudoko](https://play.dev.siwa.io/game/sudoko) ## Sudoku in brief Sudoku as we know it is credited to Howard Garns, an American architect whose puzzle appeared in 1979 in a Dell puzzle magazine under the name Number Place. The Japanese publisher Nikoli printed it from 1984 and gave it the name Sudoku. The game conquered Europe after it appeared in The Times, in London, in November 2004. The rules fit in one sentence: fill a 9×9 grid so that each digit from 1 to 9 appears once in every row, every column and every 3×3 box. A few digits are given at the start, and a good grid has only one solution, reachable by logic alone. ## What Sudoku lovers enjoy - **Pure deduction**: no luck, no trivia, nothing but logic. - **Momentum**: every digit you place unlocks others, right up to the final cascade. - **Techniques**: pairs, scanning, single candidates, which make hard grids manageable. - **The ritual**: a grid with your morning coffee, in the paper or on your phone. The first two games in the selection are Sudoku in the strict sense. The other two are different grid puzzles that call on the same way of reasoning. ## Comparison: what each SIWA game shares with Sudoku | SIWA game | In common with Sudoku | What changes | | --- | --- | --- | | Sudoko | The same rules, in 9×9 | Each digit is checked as soon as it is placed | | Sudolito | The same rules | 6×6 grid, 2×3 boxes, digits 1 to 6 | | Binero | Row and column constraints | Two symbols instead of nine digits | | Bouclo | Pure deduction from number clues | You draw a loop instead of filling cells | ## Sudoko and Sudolito: Sudoku every day [Sudoko](https://dev.siwa.io/en/games/sudoko) is a classic 9×9 Sudoku, with a fresh grid every day. The difficulty varies between easy, medium and hard according to the number of starting digits; on Sundays the grid is always hard. Allow 5 to 12 minutes. Each grid is generated by an algorithm and then checked by a solver: it has a single solution, with about 36 given digits on easy and as few as 22 on hard. One difference is worth knowing for purists: each digit is checked as soon as it is placed. A wrong digit shows in red, blocks input until you undo it, and still counts as a mistake in your score. The game also offers a notes mode, multi-cell selection with a swipe, and a long press that locks a digit to highlight it across the grid. If you get stuck, a joker reveals a cell, for a few points. [Sudolito](https://dev.siwa.io/en/games/sudolito) follows exactly the same rules on a 6×6 grid divided into boxes of 2 rows by 3 columns, with digits 1 to 6. The deductions are the same, in half the time: allow 3 to 7 minutes. ## Binero and Bouclo: the same logic, different rules [Binero](https://dev.siwa.io/en/games/binero) replaces the nine digits with two symbols, ○ and ●. Three rules: never more than two identical symbols in a row, as many ○ as ● in every row and column, and no duplicate row or column. The grid, 6×6 or 8×8, is judged only once it is full: with just two symbols, flagging a wrong cell would give away the answer. Our guide to [games like Takuzu](https://dev.siwa.io/en/guides/jeux-comme-takuzu) covers this binary cousin of Sudoku in detail. [Bouclo](https://dev.siwa.io/en/games/bouclo) changes the gesture. You draw a single closed loop along the edges, between the dots of the grid; the number in a cell tells you how many of its four sides belong to the loop. Like Sudoku, it is a puzzle of pure deduction, where every segment you place forces others. On Sundays the grid is bigger and harder; a joker reveals a correct segment if you get stuck. ## One grid a day, the same for everyone Each grid changes at midnight, in your local time, and it is the same for everyone that day. The daily leaderboard compares everyone's score, calculated out of 1000 points from mistakes, jokers and time. Everything is free, in the browser, with nothing to download and no sign-up. A free account keeps your streaks and opens the archives so you can catch up on a missed grid. A simple routine: Sudolito as a warm-up, then Sudoko, and Binero or Bouclo when you want to change rules. ## 4 games for Sudoku lovers 1. [712564893163572](https://dev.siwa.io/en/games/sudoko) ### 1 [Sudoko](https://dev.siwa.io/en/games/sudoko) Classic Sudoku rules: a 9×9 grid, digits 1 to 9 once per row, column and 3×3 box. The difficulty varies, and on Sundays the grid is always hard. [Play Sudoko](https://play.dev.siwa.io/game/sudoko) [See the game page](https://dev.siwa.io/en/games/sudoko) 2. [123454362151234](https://dev.siwa.io/en/games/sudolito) ### 2 [Sudolito](https://dev.siwa.io/en/games/sudolito) The same reasoning in a short format: a 6×6 grid with 2×3 boxes and digits 1 to 6. Ideal for a break of a few minutes. [Play Sudolito](https://play.dev.siwa.io/game/sudolito) [See the game page](https://dev.siwa.io/en/games/sudolito) 3. ### 3 [Binero](https://dev.siwa.io/en/games/binero) Grid logic without digits: two symbols, never three alike in a row, equal numbers of each per row and column. Sudoku's binary cousin. [Play Binero](https://play.dev.siwa.io/game/binero) [See the game page](https://dev.siwa.io/en/games/binero) 4. ### 4 [Bouclo](https://dev.siwa.io/en/games/bouclo) For a change of geometry: a closed loop to draw between the dots of a grid, guided by numbers. A puzzle from the Slitherlink family. [Play Bouclo](https://play.dev.siwa.io/game/bouclo) [See the game page](https://dev.siwa.io/en/games/bouclo) ## Frequently asked questions
How is Sudoko different from Sudoku? Not at all in its rules: Sudoko is a classic 9×9 Sudoku. It adds a daily grid that is the same for everyone, a score out of 1000 points and a daily leaderboard.
Does Sudoko flag mistakes? Yes. Each digit is checked as soon as you place it: a wrong digit shows in red and must be undone before you continue. It still counts as a mistake in your score.
Can I take notes? Yes. Sudoko and Sudolito have a notes mode for pencilling in candidates, and a correct digit automatically clears that note from its row, column and box.
Is the daily Sudoku harder on Sundays? Yes. On Sundays the Sudoko grid is always hard; on other days the difficulty varies between easy, medium and hard.
## Ready to play? Today's grid is waiting, free and without sign-up. [Play Sudoko](https://play.dev.siwa.io/game/sudoko) ## More guides [SSBPBODM

Daily logic games

Sudoku, Takuzu, nonogram, Slitherlink, Mastermind: eight free logic games with a new grid every day. In your browser, no sign-up.PicksRead the guide](https://dev.siwa.io/en/guides/jeux-de-logique-quotidiens) [S

How to play Sudoko

The rules of Sudoko, SIWA's daily 9×9 sudoku: rows, columns, 3×3 boxes, notes, joker and scoring. With a sample box solved step by step.How to playRead the guide](https://dev.siwa.io/en/guides/comment-jouer-a-sudoko) [S

Sudoko tips

Band scanning, locked digits, targeted notes, pairs and a well-placed joker: seven tips to solve the daily Sudoko grid faster and with fewer mistakes.How to playRead the guide](https://dev.siwa.io/en/guides/astuces-sudoko) [Play Sudoko](https://play.dev.siwa.io/game/sudoko) ```json {"@context":"https://schema.org","@graph":[{"@id":"https://dev.siwa.io/#identity","@type":"Organization","email":"hello@siwa.io","name":"SIWA","url":"https://dev.siwa.io/","logo":{"@id":"https://dev.siwa.io/#logo"}},{"@id":"https://dev.siwa.io/#website","@type":"WebSite","inLanguage":"en-US","name":"SIWA","url":"https://dev.siwa.io/","publisher":{"@id":"https://dev.siwa.io/#identity"}},{"@id":"https://dev.siwa.io/en/guides/jeux-comme-sudoku#webpage","dateModified":"2026-10-27","datePublished":"2026-10-27","description":"Love Sudoku? A daily 9×9 Sudoku and a 6×6 mini Sudoku, plus two logic puzzles in the same spirit. 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