Binary Puzzle
Balance the grid with 0s and 1s.
Binary Puzzle — also known as Takuzu or Binairo — is a deceptively simple logic puzzle: just two symbols, three clean rules, and a satisfying amount of deduction packed into every grid.
Get it on
Google Play
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App Store
How to play Binary Puzzle
Fill every cell with a 0 or a 1 so that no three matching values sit in a row anywhere, horizontally or vertically.
Every row and column must end up with an equal count of 0s and 1s.
No two rows can end up identical to each other, and no two columns can end up identical to each other.
Example
If a row already reads "1 1 _ 0", the third cell can't be a 1 — that would make three 1s in a row.
Difficulty
Tips & strategy
- Whenever two of the same value sit next to each other, the cells on either side are forced to be the opposite value.
- Once a row or column has used up half its 0s or half its 1s, every remaining empty cell in that line must be the other value.
- Compare near-finished rows and columns against each other — the no-duplicate-line rule often forces the last few cells.
Binary Puzzle FAQ
Is Binary Puzzle the same as Takuzu or Binairo?+
Yes — Binary Puzzle, Takuzu and Binairo are all names for the same logic puzzle. The rules (no three in a row, equal counts, no duplicate lines) are identical.
What are the exact rules?+
Fill every cell with 0 or 1 so that: no three matching values sit in a row anywhere; every row and column has an equal count of 0s and 1s; and no two rows, or two columns, are identical.
Is Binary Puzzle good for beginners?+
Very — with only two symbols and simple rules, it's one of the easier logic-puzzle genres to pick up. Start on Easy (6×6) to get a feel for the deduction patterns before moving up.
Does every puzzle have a unique solution?+
Yes, at every difficulty. Each board is generated and then verified by a solver to have exactly one valid completion before it's shown to you.