--- title: "Binero: free online game, a new grid every day · SIWA" description: "Binero is a free online logic puzzle where you fill an 8×8 grid with two symbols, never three alike in a row and an equal count of each per row and column, with a new grid every day." canonical_url: "https://dev.siwa.io/en/games/binero" locale: en meta: "og:description": "Balance the grid with ○ and ●" "og:image": "https://dev.siwa.io/og/en/binero.jpg?v=3734a665" "og:image:alt": "Binero · Balance the grid with ○ and ●" "og:image:height": "630" "og:image:type": image/jpeg "og:image:width": "1200" "og:title": Binero "twitter:image": "https://dev.siwa.io/og/en/binero.jpg?v=3734a665" "twitter:image:alt": "Binero · Balance the grid with ○ and ●" --- > Index of every page on this site: [llms.txt](https://dev.siwa.io/llms.txt) Logic puzzle # Binero Balance the grid with ○ and ● Binero is a free online logic puzzle where you fill an 8×8 grid with two symbols, never three alike in a row and an equal count of each per row and column, with a new grid every day.
Duration
4–6 min
Difficulty
Medium to hard
Skill
Deduction
Price
Free
[Play now — for free](https://play.dev.siwa.io/game/binero) ## How to play? One grid, two symbols, three rules. Fill every cell with a ○ or a ● — the 0s and 1s of Takuzu — while respecting the row and column constraints. Logic does the rest. 1. 1 Fill each empty cell with a ○ or a ●. 2. 2 Never more than two identical symbols in a row. 3. 3 As many ○ as ● in every row and column, and no two rows or columns alike. 4. 4 Draft mode: cycle cells freely, the grid is only judged once it's full. ## Why play? - Rules learned in ten seconds, depth that lasts. - No prior knowledge needed, only deduction. - Draft mode lets you test hypotheses at no cost. ## Tips - Spot the pairs: two identical symbols side by side force the opposite symbol into the cells directly before and after them. - Look for gaps: when two identical symbols sit on either side of an empty cell, that cell must take the other symbol, or you would get three in a row. - Count along every line. On an 8×8 grid each row needs exactly four ○ and four ●: once one symbol reaches four, every remaining cell gets the other. - Remember that rows must be unique. If a nearly finished row mirrors a completed one, its last two cells have to go the other way round. - The grid is only checked once it is full, and every failed check costs points. Double-check rows and columns before filling the last cell. ## Frequently asked questions
How do you play Binero? Fill every empty cell with one of two symbols, ○ or ●, the equivalent of 0 and 1. Three rules apply: never three identical symbols in a row, as many ○ as ● on every row and column, and no two rows or columns alike. Pre-filled cells are locked.
Is Binero free to play? Yes. Binero is free and runs in your browser, on desktop or mobile, with nothing to download. Today's grid can be played without an account. A free account unlocks the archive of past days, and SIWA+ (€18 a year) removes ads and adds advanced stats.
What is the difference between Binero, Takuzu and Binairo? Essentially none: Takuzu, Binairo and Binero are names for the same binary puzzle, with the same three rules. Binero adds a daily grid shared by every player, a score out of 1000 points, a daily leaderboard and streaks of consecutive days.
Why doesn't Binero show which cells are wrong? With only two symbols, flagging a wrong cell would give the answer away. So the grid is only checked once it is full. If it is incorrect, you know something is off but not where. A joker used at that point reveals one of the wrong cells, at the cost of some points.
Is the Binero grid harder on Sundays? Yes. On weekdays the daily grid is a medium 8×8; on Sundays it stays 8×8 but comes with fewer pre-filled cells. Every grid has a single solution, checked by a solver before it goes live. It changes at midnight, your local time.
## Play now Binero Balance the grid with ○ and ● On your phone, no app needed: it all plays in the browser. [Play now — for free](https://play.dev.siwa.io/game/binero) ![Binero on a phone: the daily grid at the start of a game](https://dev.siwa.io/screens/binero-390.webp) ## Similar games [BoucloDraw a single loop across the grid](https://dev.siwa.io/en/games/bouclo) [123454362151234SudolitoA 6×6 mini-sudoko, just as clever](https://dev.siwa.io/en/games/sudolito) [PixeloFill the grid to reveal the picture](https://dev.siwa.io/en/games/pixelo) ## Related guides [B

Binero tips

Pairs, gaps, counting, the last symbol, unique rows: seven techniques to solve the daily Binero grid faster and without failed checks.How to playRead the guide](https://dev.siwa.io/en/guides/astuces-binero) [BPSB

Games like Takuzu

Love Takuzu, Binairo or LinkedIn's Tango? Binero follows Takuzu's three rules on a free daily grid. Three more grid puzzles round out the selection.AlternativeRead the guide](https://dev.siwa.io/en/guides/jeux-comme-takuzu) [B

How to play Binero

The rules of Binero, SIWA's daily Takuzu: two symbols, three constraints, an 8×8 grid. Controls, how the grid is checked, and a first row solved step by step.How to playRead the guide](https://dev.siwa.io/en/guides/comment-jouer-a-binero) [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) [PBB

Games like Picross

Love Picross, nonograms or Griddlers? Pixelo offers a free nonogram every day in the browser. Two more grid logic puzzles round out the selection.AlternativeRead the guide](https://dev.siwa.io/en/guides/jeux-comme-picross) [SSBB

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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.AlternativeRead the guide](https://dev.siwa.io/en/guides/jeux-comme-sudoku) [Play Binero](https://play.dev.siwa.io/game/binero) ```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/games/binero#webpage","description":"Binero is a free online logic puzzle where you fill an 8×8 grid with two symbols, never three alike in a row and an equal count of each per row and column, with a new grid every day.","name":"Binero: free online game, a new grid every day","url":"https://dev.siwa.io/en/games/binero","@type":["WebPage","ItemPage","FAQPage"],"breadcrumb":{"@id":"https://dev.siwa.io/en/games/binero#breadcrumb"},"isPartOf":{"@id":"https://dev.siwa.io/#website"},"mainEntity":[{"@id":"https://dev.siwa.io/en/games/binero#/schema/question/1"},{"@id":"https://dev.siwa.io/en/games/binero#/schema/question/2"},{"@id":"https://dev.siwa.io/en/games/binero#/schema/question/3"},{"@id":"https://dev.siwa.io/en/games/binero#/schema/question/4"},{"@id":"https://dev.siwa.io/en/games/binero#/schema/question/5"}],"potentialAction":[{"@type":"ReadAction","target":["https://dev.siwa.io/en/games/binero"]}],"primaryImageOfPage":{"@id":"https://dev.siwa.io/#logo"}},{"@id":"https://dev.siwa.io/en/games/binero#/schema/video-game/1","@type":"VideoGame","applicationCategory":"GameApplication","description":"Binero is a free online logic puzzle where you fill an 8×8 grid with two symbols, never three alike in a row and an equal count of each per row and column, with a new grid every day.","gamePlatform":"Web browser","genre":"Logic puzzle","inLanguage":"fr","isAccessibleForFree":true,"name":"Binero","operatingSystem":"Any","url":"https://dev.siwa.io/en/games/binero","image":{"@id":"https://dev.siwa.io/#/schema/image/1"},"offers":{"@type":"Offer","price":"0","priceCurrency":"EUR"},"publisher":{"@id":"https://dev.siwa.io/#identity"},"screenshot":{"@type":"ImageObject","url":"https://dev.siwa.io/screens/binero-780.webp","width":780,"height":1688,"caption":"Binero on a phone: the daily grid at the start of a game"}},{"@id":"https://dev.siwa.io/en/games/binero#breadcrumb","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","name":"Home","item":"https://dev.siwa.io/en","position":1},{"@type":"ListItem","name":"Games","item":"https://dev.siwa.io/en/games","position":2},{"@type":"ListItem","name":"Binero","position":3}]},{"@id":"https://dev.siwa.io/en/games/binero#/schema/question/1","@type":"Question","inLanguage":"en-US","name":"How do you play Binero?","acceptedAnswer":{"@type":"Answer","text":"Fill every empty cell with one of two symbols, ○ or ●, the equivalent of 0 and 1. 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