---
title: "Free Kakurasu generator with answers | Once Books"
description: "A free Kakurasu generator that makes a printable sum-logic puzzle and its answer in one click. Every puzzle has one solution, with no sign-up and no watermark."
source: "https://www.oncebooks.com/tools/kakurasu-generator"
---

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3. Kakurasu generator

Free tool

# Free Kakurasu generator, with the answer

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

PuzzleDesign

Difficulty

Larger grids have more cells to weigh. Every puzzle has one solution.

5×5 grid. Shade cells so each row and column of shaded squares sums to its edge target.

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 shaded answer. Every puzzle has one solution, checked by the same engine as our KDP studio.

## Want the whole book?

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

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

Free to build · pay once to export

Preview

The puzzle and its shaded answer, as they print.

Hide the preview

- Kakurasu Medium

  1

  Puzzle
- Kakurasu Medium · Solution

  2

  Solution

Generate puzzlePrint / save PDF

## How to make a Kakurasu puzzle

1. Pick a difficulty. Choose a grid size from a gentle 4 by 4 up to a 7 by 7. Larger grids have more cells to weigh, so the solve takes longer.
2. Generate the puzzle. Press Generate puzzle. You get a fresh grid with the weights 1 to N along the top and left and the target sums down the right and along the bottom. Every puzzle has exactly one solution.
3. Print the two pages. Press Print / save PDF. You get two pages: the puzzle with its targets on page one and the shaded answer on page two.

## Publishing a whole book?

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

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

## Questions

**What is a Kakurasu puzzle?**

Kakurasu is a shading logic puzzle. Each column is worth its position number toward its row total and each row is worth its position number toward its column total. You shade cells so each row and column of shaded squares sums to the target printed on that edge.

**Is this Kakurasu 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 have one solution?**

Yes. Every puzzle is generated and checked by the same solver our Publisher Studio uses, so the edge targets fix exactly one shading. A puzzle is never ambiguous or unsolvable.

**Does it include the answer?**

Yes. Every puzzle prints as two pages: the grid of targets on page one and the shaded answer 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.