How do you play Takuzu?

Every row and column needs three 0s and three 1s. No three of the same digit in a line. No two rows or columns can be identical. Tap a square to cycle 1, 0 and empty.

Is Takuzu free to play?

Yes. Takuzu runs in the browser for nothing: no download, no account and no sign-up. Takuzu sits on the Puzzle shelf at Mondo Knows, alongside puzzle and logic games.

How long does a game of Takuzu take?

3-8 minutes. It is rated hard, and tap a square to cycle 1, 0 and empty. Your best score stays on your own device.

Does Takuzu work on a phone?

Yes. The board sizes itself to the screen, so Takuzu plays the same on a phone as on a desktop, and touch controls replace the mouse. Nothing needs installing.

Mondo Knows Games

Takuzu

A binary logic grid: every row and column needs an equal number of 0s and 1s, no three in a row, and no two rows or columns identical. The clues are the locked squares.

Best Puzzle GamesHard3-8 minutesPlays on mobile

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How to play

Every row and column needs three 0s and three 1s.
No three of the same digit in a line.
No two rows or columns can be identical.

Controls

Tap a square to cycle 1, 0 and empty.

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Questions people ask

How do you play Takuzu?: Every row and column needs three 0s and three 1s. No three of the same digit in a line. No two rows or columns can be identical. Tap a square to cycle 1, 0 and empty.
Is Takuzu free to play?: Yes. Takuzu runs in the browser for nothing: no download, no account and no sign-up. Takuzu sits on the Puzzle shelf at Mondo Knows, alongside puzzle and logic games.
How long does a game of Takuzu take?: 3-8 minutes. It is rated hard, and tap a square to cycle 1, 0 and empty. Your best score stays on your own device.
Does Takuzu work on a phone?: Yes. The board sizes itself to the screen, so Takuzu plays the same on a phone as on a desktop, and touch controls replace the mouse. Nothing needs installing.

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Everything runs in your browser. Scores and bests are stored on your own device, not on a server.