Visual primer for first-time solvers
Binairo,
shown not told.
Live demonstrationStep 01 / 07
Step01—Meet the board
This is Binairo.
A 6×6 grid where every cell gets a 0 or a 1. Three rules apply everywhere: no three consecutive identical digits in any row or column, each row and column must contain exactly three 0s and three 1s, and no two rows — or two columns — may be identical.
Rules in play
- No three consecutive identical digits in any row or column
- Each row and column holds exactly three 0s and three 1s
- No two rows are identical · no two columns are identical
Given clues
Pre-filled cells shown from the start. 0 in blue, 1 in dark — the colors persist throughout.
Sandwich rule
X–?–X: the same digit on both sides forces the middle to be the opposite.
Consecutive pair
X–X–?: two identical digits in a row force the next cell to be the opposite.