---
title: "Free Binairo generator with answers | Once Books"
description: "A free Binairo generator that makes a printable binary-logic puzzle and its answer in one click. Every puzzle solves by logic alone, with no sign-up and no watermark."
source: "https://www.oncebooks.com/tools/binairo-generator"
---

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3. Binairo generator

Free tool

# Free Binairo generator, with the answer

Pick a size and generate a binary-logic puzzle, then print it with its answer. Every puzzle solves by logic alone, with no sign-up and no watermark. It runs on the same engine as our KDP Publisher Studio.

PuzzleDesign

Difficulty

Larger grids have more lines to balance. Every puzzle solves by logic, with no guessing.

8×8, 17 given cells. Fill the rest with 0s and 1s so no three repeat and every line is balanced.

Theme

ClassicBoldSoftShadedNavyIndigoSkyTealEmeraldForestPlumBerryCrimsonEmberAmberCocoa

**Customise colours**

Numbers

Cell lines

Box lines

Page background

Style

StandardClean

Clean drops the title band and footer, leaving the grid.

Generate puzzlePrint / save PDF

Two pages: the puzzle and its completed grid. Every puzzle is proved to solve by logic alone, by the same engine as our KDP studio.

## Want the whole book?

This makes one puzzle. Sign up to turn it into a full Binairo book for Amazon KDP: hundreds of graded binary-logic puzzles at any trim, as print-ready PDFs.

[Build the full book](https://app.oncebooks.com/publisher-studio/binairo)

Free to build · pay once to export

Preview

The puzzle and its completed grid, as they print.

Hide the preview

- Binairo Medium

  1

  Puzzle
- Binairo Medium · Solution

  2

  Solution

Generate puzzlePrint / save PDF

## How to make a Binairo

1. Pick a difficulty. Choose a grid size from a gentle 6 by 6 up to a 14 by 14. Larger grids have more rows and columns to balance, so the solve takes longer.
2. Generate the puzzle. Press Generate puzzle. You get a fresh grid seeded with a few 0s and 1s. Every puzzle is proved to solve by logic, with no guessing.
3. Print the two pages. Press Print / save PDF. You get two pages: the puzzle with its given cells on page one and the completed grid on page two.

## Publishing a whole book?

This tool makes one puzzle for home or the classroom. To make a Binairo book you can sell on Amazon KDP, Publisher Studio generates hundreds of graded binary-logic puzzles across a difficulty curve, at any KDP trim, as a print-ready interior and solutions PDF.

[See the KDP Binairo maker](https://www.oncebooks.com/kdp-binairo-maker)

## Questions

**What is a Binairo?**

Binairo, also called Takuzu or a binary puzzle, is a logic puzzle on a grid of 0s and 1s. Fill every cell so no three of the same digit sit together in a row or column, each row and column has as many 0s as 1s, and no two rows and no two columns are identical.

**Is this Binairo generator free?**

Yes. Pick a difficulty, generate a puzzle and print the grid plus its answer, with no sign-up and no watermark. It is free for classroom, home and personal use.

**Does every puzzle solve by logic alone?**

Yes. Every puzzle is generated so that the no-three, balance and uniqueness rules alone complete the grid, with no guessing, and that is verified by the same solver our Publisher Studio uses. A puzzle is never ambiguous or unsolvable.

**Does it include the answer?**

Yes. Every puzzle prints as two pages: the grid of givens on page one and the completed grid on page two, so you can check your work.

**What size are the pages?**

The free tool prints at 8.25 by 11 inches, a popular large-print size. Our Publisher Studio will export the same book at any KDP trim, from 5.06 by 7.81 up to 8.27 by 11.69, as a print-ready 300 DPI interior.