How to Play Binairo
Fill the grid with 0s and 1s so no three consecutive cells in any row or column are the same, each row and column has equal counts, and no two rows or columns are identical.
Try it now — Easy 8x8 →The Rules
- Fill every cell with either 0 or 1
- No three consecutive cells in any row or column can be the same digit
- Each row and each column must have an equal count of 0s and 1s
- No two rows may be identical, and no two columns may be identical
Available in 4 sizes (6x6, 8x8, 10x10, 12x12) and 3 difficulty levels (easy, normal, hard).
See It in Action
Click to place 0 or 1 — no three identical in a row, equal counts, no two rows alike
How to Play
- Find any pair of identical adjacent digits — the cell on either side of the pair is forced to the opposite digit
- Count 0s and 1s in a line: if one digit fills exactly half the cells, all remaining cells get the other digit
- Compare near-complete rows or columns: if two differ in only one cell, place the opposite digit there
- Repeat these three techniques iteratively until the entire grid is filled
Pro Tips
A pair like "0 0" forces 1 on both its immediate neighbours — use this constantly
When a row has its allowed maximum of one digit, the rest of the row is entirely the other digit
Check for near-duplicate rows early — fixing them can cascade into many other deductions
Frequently Asked Questions
What is Binairo?
Binairo (Takuzu) is a binary logic puzzle. Fill each cell with 0 or 1. No three consecutive cells in a row or column can be the same digit, each row and column must have equal numbers of 0s and 1s, and no two rows or columns can be identical.
Choose Your Challenge
Start with easy to learn the rules, then progress to harder difficulties.