Binary Puzzles — 12x12

Free printable 12x12 binary puzzles as PDFs with answer pages. The largest size here, six of each digit per line. No sign-up, no email.

⬇ Download all 10 as one PDF — free, no sign-up

Twelve by twelve is the biggest binary grid on the site and the one where the duplicate-line rule earns its keep. With six of each digit needed per line, counting rarely finishes a row on its own, and the pair-and-gap patterns thin out as the grid empties in the middle. What gets you through is comparing lines against each other — twelve rows means eleven possible comparisons for every unfinished one, and somewhere in there is usually a cell that only has one legal value.

Each page holds one 12x12 binary puzzle, laid out to keep cells writable at that grid size, with given digits weighted so they never get confused with your own entries. Every puzzle is matched by an answer page showing the completed grid. Black and white, no shaded fills, one puzzle per US Letter sheet.

Binary Puzzles 12x12 Hard 01 Binary Puzzles 12x12 Hard 01Download PDF ↓ Binary Puzzles 12x12 Hard 02 Binary Puzzles 12x12 Hard 02Download PDF ↓ Binary Puzzles 12x12 Hard 03 Binary Puzzles 12x12 Hard 03Download PDF ↓ Binary Puzzles 12x12 Hard 04 Binary Puzzles 12x12 Hard 04Download PDF ↓ Binary Puzzles 12x12 Hard 05 Binary Puzzles 12x12 Hard 05Download PDF ↓ Binary Puzzles 12x12 Hard 06 Binary Puzzles 12x12 Hard 06Download PDF ↓ Binary Puzzles 12x12 Hard 07 Binary Puzzles 12x12 Hard 07Download PDF ↓ Binary Puzzles 12x12 Hard 08 Binary Puzzles 12x12 Hard 08Download PDF ↓ Binary Puzzles 12x12 Hard 09 Binary Puzzles 12x12 Hard 09Download PDF ↓ Binary Puzzles 12x12 Hard 10 Binary Puzzles 12x12 Hard 10Download PDF ↓

Related printables

Binary PuzzlesBinary Puzzles — 10x10Binary Puzzles — 6x6 EasyBinary Puzzles — 8x8Binary Puzzles

Frequently asked questions

How many 0s and 1s per line on a 12x12?
Six of each, in every row and every column. That also means the total grid contains 72 of each digit, which is a quick sanity check if you finish and want to confirm the counts before comparing against the answer page.
The middle of the grid is empty and I am stuck. What now?
Switch from cells to lines. Write out the completed rows, then for each unfinished row work out which digit patterns are still possible given its known cells. If one candidate pattern duplicates a finished row, discard it — often that leaves a single candidate and the whole row drops in at once.
Are 12x12 binary puzzles harder than hard sudoku?
They are hard in a different way. Sudoku difficulty comes from long candidate-elimination chains within a fixed structure; a large binary puzzle is more about holding whole-line patterns in mind. Solvers often find one much easier than the other, and it is not always the same one.
Can I print these for a puzzle group?
Yes, print as many copies as you need for your own group, classroom or family. Keep the answer pages back if you want to run it competitively — each puzzle and its answer are on separate pages for exactly that reason.