Fill the grid with nothing but 0s and 1s, keep every line balanced, ban any run of three, and make sure no two rows or columns ever match.
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How to play
Binairo is a binary logic puzzle. Every cell holds either a 0 or a 1, and a handful of cells start filled as clues. Work out the rest by pure deduction, each finished grid has exactly one solution and needs no guessing.
Each row and each column must contain an equal number of 0s and 1s.
No three identical digits may sit in a row, across or down.
No two rows may be identical, and no two columns may be identical. Conflicts glow red while you work.
Controls
Desktop: click an empty cell to cycle blank → 0 → 1 → blank. Or use the arrow keys to move and press 0, 1, or Backspace to set and clear a cell.
Phone & tablet: tap a cell to cycle through 0 and 1, no keyboard needed. Reset and Hint buttons are always available.
Game modes
Sizes, 6×6, 8×8 and 10×10 grids of increasing challenge.
Daily, one shared puzzle each day.
Practice, fresh random grids on demand.
Tips & strategy
Spot pairs: two identical digits side by side force the opposite digit on both ends to avoid a triple.
When a line already holds all of one digit, every remaining empty cell must be the other.
Near the end, use the no-duplicate-lines rule to break ties between two almost-finished rows or columns.
About Binairo
Binairo is a binary-puzzle deduction game built on three simple balance-and-uniqueness rules, in the spirit of sudoku-style logic but with only two symbols. This is an original, free browser version with daily and practice puzzles, playable instantly with no download or sign-up.
A free, original browser game on PlayPendium. No download, no install.
