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Tap an empty square: it becomes 0, then 1, then empty again. With a keyboard: arrows, 0, 1 and Backspace.
How to play Takuzu
Takuzu (also called Binairo) is played with two digits: 0 and 1. Fill every square following three rules:
- never three identical digits in a row, across or down (0 0 0 or 1 1 1 is not allowed);
- as many 0s as 1s in every row and every column;
- no two rows (or two columns) can be exactly the same.
Tip: next to two identical digits, you always need the other digit. And between two identical digits (1 _ 1), the middle square takes the other digit.
Frequently asked questions
What age is Takuzu for?
The mini 4 × 4 grid suits children from 7 or 8. The 8 × 8 and 10 × 10 grids take more thinking and are enjoyed by adults too.
Do you have to guess?
No: every grid is drawn at random and checked to have exactly one solution, which you can find by logic.
Is my grid saved?
Yes: the current grid is kept on this device. You can close the page and carry on later.