Printable Binario Signs puzzles
Binario Signs is a board of zeros and ones. Fill in the missing digits so that every row and every column holds as many zeros as ones and nowhere three alike stand side by side. Between some cells stands a sign: an = says both hold the same digit, an × that they differ. A few digits are given at the start; the rest is the puzzle.
Every day there is a new board in each of four sizes, dealt to everybody alike and solvable without a single guess. Pick a size, print the sheet, and take it wherever a screen would not go — a pen is all it takes.
Today’s sheets
A4, black and white, one puzzle a sheet, with how to play on the last page. No sign-up, nothing to fill in.
A new set every day at midnight UTC.
More than one at a time
Binary Signs Puzzles to Print: 200 Boards, Easy to Hard
200 puzzles that start gentle and end hard · four to a page for printing, or one to a page for a tablet · A4 and US Letter in one purchase · answers in a separate file · every board also playable online
Enter the code SLOWSQUARES at checkout for 25% off in our Etsy shop.
The sheet above stays free, and so does the new one dealt every day.
How to play
Put a filled or a hollow square in every empty cell so that each row and each column holds as many of one as of the other.
Never three alike side by side — not in a row, not in a column.
An = between two cells says they hold the same; an × says they do not.
Tap a cell for a hollow square, tap again for a filled one, once more to clear it.
Shown in red: three of the same kind side by side, squares a row or column has too many of, and two cells that disagree with the sign between them.
Questions people ask
- Is it free?
- Yes. The sheets, the boards on the site and the archive are free, without an account and without advertising. The PDFs are made once a day and anyone may download them.
- How many puzzles are there a day?
- One new board a day at each level — 6 × 6, 8 × 8, 10 × 10, and 12 × 12 — the same for everybody, dealt at midnight UTC. Earlier days stay downloadable in the archive below.
- Do I need to sign up?
- No. Every sheet downloads without an account. An account only keeps your online plays and your streak in one place across your devices.
- Does every puzzle have exactly one solution?
- Yes. Every board is checked to have a single solution and to be solvable by reasoning alone — no guessing is ever needed. The solution is not printed; the sheet holds the puzzle and the rules.
- May I hand the sheets out or use them in a classroom?
- Yes — print, photocopy and hand them out as you like, for a class, a club or a waiting room. Only leave the credit line at the foot of the sheet where it is.
Earlier days
- October 246 × 68 × 810 × 1012 × 12
- October 236 × 68 × 810 × 1012 × 12
- October 226 × 68 × 810 × 1012 × 12
- October 216 × 68 × 810 × 1012 × 12
- October 206 × 68 × 810 × 1012 × 12
- October 196 × 68 × 810 × 1012 × 12
- October 186 × 68 × 810 × 1012 × 12
- October 176 × 68 × 810 × 1012 × 12
- October 166 × 68 × 810 × 1012 × 12
- October 156 × 68 × 810 × 1012 × 12
- October 146 × 68 × 810 × 1012 × 12
- October 136 × 68 × 810 × 1012 × 12
- October 126 × 68 × 810 × 1012 × 12
- October 116 × 68 × 810 × 1012 × 12
- October 106 × 68 × 810 × 1012 × 12
- October 96 × 68 × 810 × 1012 × 12
- October 86 × 68 × 810 × 1012 × 12
- October 76 × 68 × 810 × 1012 × 12
- October 66 × 68 × 810 × 1012 × 12
- October 56 × 68 × 810 × 1012 × 12
- October 46 × 68 × 810 × 1012 × 12
- October 36 × 68 × 810 × 1012 × 12
- October 26 × 68 × 810 × 1012 × 12
- October 16 × 68 × 810 × 1012 × 12
- September 306 × 68 × 810 × 1012 × 12
- September 296 × 68 × 810 × 10
- September 286 × 68 × 810 × 10
- September 276 × 68 × 810 × 10
- September 266 × 68 × 810 × 10
- September 256 × 68 × 810 × 10
- September 246 × 68 × 810 × 10
- September 236 × 68 × 810 × 10
- September 226 × 68 × 810 × 10
- September 216 × 68 × 810 × 10
- September 206 × 68 × 810 × 10
No timer. Leave and come back — it’s saved.
Play today’s Binario Signs online