Free printable binary puzzle
A Binary Puzzle, also known as Takuzu or Binairo, is an 8x8 grid you fill with 0s and 1s under three constraints. No three identical digits may sit together in a row or column, every row and every column holds four 0s and four 1s, and no two rows or two columns may match. It is a middle ground for people who like Sudoku's uniqueness rules but want a smaller, two-symbol alphabet.
Solution page included
Peek at the solution
This download is a 6x9 inch high-resolution PNG of Puzzle 1, with some 0s and 1s already placed as givens. A matching solution PNG shows the completed grid. There is no signup and no PDF — print the PNG and work it on paper.
How to play
- Copy the three rules from the header: no three identical symbols in a line, equal counts of 0 and 1 in every row and column, and all rows and columns unique.
- Start from the givens — two matching digits in a row force the next cell the other way, and a pair of 0s already in a row of eight leaves room for exactly two more 0s.
- Fill remaining cells with 0 or 1 until the grid is full.
- Before you finish, scan for duplicate rows or columns and break any match with the remaining empty cells.
Print at 100% scale on letter or A4 so each 8x8 cell is large enough for a 0 or 1.
Frequently asked questions
Where can I find the solution to this Binary Puzzle?
A solution PNG is included alongside the puzzle page. It shows every empty cell filled with a 0 or a 1 that satisfies the three printed rules. Check the whole grid after you finish, rather than cell by cell, so you still do the uniqueness scan yourself.
Is this Binary Puzzle free?
Yes. You can download and print the PNG without creating an account or entering an email address. There is no paywall on this page. Keep a copy for later or print a fresh one after you fill the first.
Who should try this Binary Puzzle?
It is a good next step after Sudoku for solvers who want a different constraint set without a 1-through-9 alphabet. Teens and adults who enjoy pattern logic will get the most from the uniqueness rule. The 8x8 size is short enough for a commute or a quiet evening, not a weekend project.
How should I print this 8x8 Binary Puzzle?
Print at 100% scale on letter or A4 paper so the 6x9 inch page keeps its original cell size. That leaves enough room to pencil a 0 or 1 in each square. Disable fit-to-page so the grid is not reduced.
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