Binary Puzzles — 10x10

Free printable 10x10 binary puzzles as PDFs with answer pages. Five 0s and five 1s per line for experienced solvers. No sign-up.

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

At 10x10 the puzzle stops giving anything away. Five of each digit per line means you can fill four cells of a row before the count tells you anything, so most of the early work comes from chasing pairs and gaps across the grid and letting one deduction feed the next. Solvers who like the moment when a single forced cell cascades into half a row will get several of those per puzzle here. Expect fifteen minutes or so, longer on your first few.

One 10x10 binary puzzle per page, printed with clear cell divisions and given digits in a distinct weight so the starting position stays readable throughout. Each puzzle has an answer page with the completed grid. All sheets are black and white and fit a single US Letter page with margins that survive a borderless-off printer setting.

Binary Puzzles 10x10 Medium 01 Binary Puzzles 10x10 Medium 01Download PDF ↓ Binary Puzzles 10x10 Medium 02 Binary Puzzles 10x10 Medium 02Download PDF ↓ Binary Puzzles 10x10 Medium 03 Binary Puzzles 10x10 Medium 03Download PDF ↓ Binary Puzzles 10x10 Medium 04 Binary Puzzles 10x10 Medium 04Download PDF ↓ Binary Puzzles 10x10 Medium 05 Binary Puzzles 10x10 Medium 05Download PDF ↓ Binary Puzzles 10x10 Medium 06 Binary Puzzles 10x10 Medium 06Download PDF ↓ Binary Puzzles 10x10 Medium 07 Binary Puzzles 10x10 Medium 07Download PDF ↓ Binary Puzzles 10x10 Medium 08 Binary Puzzles 10x10 Medium 08Download PDF ↓ Binary Puzzles 10x10 Medium 09 Binary Puzzles 10x10 Medium 09Download PDF ↓ Binary Puzzles 10x10 Medium 10 Binary Puzzles 10x10 Medium 10Download PDF ↓

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Frequently asked questions

Is there a systematic order to work in?
A reliable loop is: scan for adjacent identical pairs and fill their bookends, scan for gaps between identical digits and fill the middle, then count every row and column and complete any line that has already reached five of a digit. Repeat the loop until nothing changes, then look at duplicate lines.
Can a 10x10 binary puzzle have more than one answer?
A properly constructed one has exactly one. If you find two valid completions, one of them breaks a rule somewhere — most often the no-duplicate-columns rule, which is easy to overlook because you naturally read across rather than down.
Do these work as a commute or waiting-room puzzle?
They suit that well. One puzzle fits on one page, needs only a pen, and can be picked up and put down without losing your place — the grid itself records everything you have worked out.
Are the given digits ever symmetric?
Not necessarily. Unlike newspaper sudoku, binary puzzles are not conventionally built with symmetric starting patterns, so the givens can be clustered anywhere. A lopsided-looking grid is not a sign of a flawed puzzle.