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Daily Binairo #65
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Binairo Puzzles

October 6, 2026

Daily

Binairo Puzzles

Play Binairo free online. A new daily binary puzzle every day, plus 600 unlimited Takuzu grids from 6x6 to 14x14. No signup, works on mobile.

PlayHow to play

How to Play

  1. 1.

    Fill every cell with a 0 or a 1 (or white and black circles, if you prefer the classic look). Tap a cell to cycle: empty → 0 → 1 → empty.

  2. 2.

    No three in a row: three identical digits may never sit consecutively, horizontally or vertically. Two is fine — a pair always gets capped by the opposite digit.

  3. 3.

    Balance every line: each row and each column contains exactly as many 0s as 1s — half and half.

  4. 4.

    Unique lines: no two rows may be identical, and no two columns may be identical. On hard boards this rule is the key that unlocks the finish.

  5. 5.

    The board is solved when every cell is filled and all three rules hold. There is always exactly one solution, and it never requires guessing.

What Is Binairo?

Binairo — also known as Takuzu, Binero, Binoxxo, or simply the binary puzzle — is a logic game played on an even-sided grid that you fill with 0s and 1s. Three rules govern every board: no three identical digits may sit side by side in a row or column, every row and column must contain equally many 0s and 1s, and no two rows or columns may be exactly alike. From a handful of given digits, those three rules pin down one — and only one — solution.

The appeal is the purity. There is no arithmetic, no vocabulary, and no guessing: every cell on every board we publish is reachable by a chain of small, checkable deductions. Easy boards yield to spotting pairs and counting a line's quota. Medium boards ask you to reason about how a whole row could legally be completed. Hard boards go one further and require the duplicate-line rule itself — comparing a nearly-finished row against completed ones to rule a candidate out.

Binairo Puzzles publishes a new daily board every midnight (US Eastern), the same for every player, alongside an unlimited collection of 600 technique-graded puzzles across five grid sizes, from a two-minute 6x6 to a marathon 14x14. Play with digits or with Binairo's traditional black-and-white circles, on any phone, tablet, or desktop — free, with no account and no downloads.

If you enjoy Sudoku's logic but want something you can learn in a minute, or you know this format from LinkedIn's Tango and want the classic, sign-free version at real sizes, this is the place to start.

Features

  • A new puzzle every day

    One fresh binary puzzle daily — the same board for everyone, so times are comparable.

  • 600 unlimited boards

    Five grid sizes from 6×6 to 14×14, three technique-graded difficulty tiers.

  • Logic only, never guessing

    Every board is verified solvable by pure deduction with a single solution.

  • Digits or circles

    Play with 0s and 1s or switch to Binairo's traditional black-and-white circles.

FAQ

Binairo is a binary logic puzzle: fill an even-sided grid with 0s and 1s so that no three identical digits are adjacent in a row or column, every row and column holds equal numbers of 0s and 1s, and no two rows or columns are identical. It's also known as Takuzu, Binero, Binoxxo, and Tic-Tac-Logic. Every board has exactly one solution reachable by pure deduction.

Yes — everything on this site is free. The daily puzzle, the full archive, and all 600 unlimited boards work in any modern browser with no account, no download, and no payment. Your progress, streak, and best times are saved locally on your device.

Start with pairs and sandwiches: two identical digits together get capped by the opposite digit at both ends, and a gap between two identical digits takes the opposite digit. Then count — once a line has its full quota of one digit, the rest are the other. Harder boards add completion analysis (list a line's legal endings) and duplicate-line elimination using the unique rows and columns rule.

Binairo and Takuzu are two names for the same classic binary puzzle, including the rule that no two rows or columns may be identical. LinkedIn's Tango uses the same fill-and-balance mechanics with suns and moons, but adds = and × signs between cells and drops the unique-lines rule. If you like Tango, classic Binairo is the deeper, sign-free original.

Start on 6×6 easy: it teaches the three rules in a couple of minutes. Move to 8×8 — the classic size and the format of most of our daily boards — once pairs and counting feel natural. 10×10 and up reward planning across several lines at once, and 14×14 is a genuine long-form challenge.

A new daily board is published every midnight, US Eastern time, and it's the same puzzle for every player worldwide. Every past daily stays playable forever at its own URL in the archive, so a missed day is never lost.

Not here. Our generator grades every board with a technique ladder and discards any puzzle that would force trial and error. Easy boards need only pairs, sandwiches, and counting; medium boards need advanced counting; hard boards need the unique-lines rule — but each next move is always provable.