Binary Puzzle, free to play
Fill the grid with circles and squares using three simple rules. No guessing needed. Also known as Takuzu or Binairo.
Full rules and tips: how to play Binary Puzzle
- 6x6, 8x8, 10x10
- A daily puzzle
- Hints
- Mistakes show as you go
How to play
Fill with circles and squares
Every cell holds a circle or a square. Some are filled in to start you off.
Follow three rules
No more than two of the same symbol side by side. Every row and column has equal circles and squares. No two rows or two columns match.
Reason, never guess
Every puzzle can be solved by logic. Wrong entries turn red as you go, and Hint fills in one cell if you are stuck.
Ways to play
Good to know
Quick answers about playing Binary Puzzle on Wittlo.
Is Binary Puzzle free?
Yes. It is free to play, with no sign-up and nothing to install.
What is a binary puzzle?
It is also called Takuzu or Binairo: a logic grid filled with two symbols under three simple rules.
Does every puzzle have just one answer?
Yes. Every puzzle is checked by a solver to have exactly one solution.
Where do I start?
If two matching symbols sit side by side, the cells at both ends must be the other symbol. If a row already has its full share of one symbol, every empty cell in it must be the other one.
Can I check my progress?
Yes. Press Check any time, or press Hint to fill in one cell. Mistakes also turn red as you go.
Can I print it?
Yes. There is a Print button under the grid.