Binary Puzzle (Takuzu / Binairo)
Fill with 0s and 1s: balanced rows/columns, no run of 3, no two rows or columns alike.
Level 1 / 2
Click a cell to cycle: empty → 0 → 1 → empty.
About this game
Deceptively simple rules — no 3-in-a-row, balanced halves, no duplicate rows/columns — that combine into a puzzle with exactly one solution.
Levels & controls
Level 1 is 6×6, Level 2 is 8×8. Both computer-verified to have exactly one solution. Locked clues are highlighted. Progress saved locally.