---
title: "KDP sudoku maker: generate once, export every trim"
description: "Generate a whole sudoku book across a difficulty curve, then export every KDP trim at 300 DPI. Unlock a project once for $4.99 and re-export forever."
source: "https://www.oncebooks.com/kdp-sudoku-maker"
---

Publisher Studio

# The KDP sudoku maker

Generate a whole graded sudoku book, then export it at every KDP trim, print-ready at 300 DPI. Make one puzzle free in your browser, unlock a full project for a one-time fee, and export unlimited formats forever.

[Open Publisher Studio](https://app.oncebooks.com/publisher-studio/sudoku)[Make one free first](https://www.oncebooks.com/tools/sudoku-generator)

$4.99 once per project. Unlimited exports, every trim. No subscription.

## Every board is uniquely solvable

The studio generates hundreds of graded 9 by 9 puzzles, each verified to have exactly one solution, with a matching solutions section at the back. No ambiguous or broken puzzles, ever.

## Every KDP trim, 300 DPI

Pick any of KDP's 17 trim sizes, from 5.06 by 7.81 up to 8.27 by 11.69, with correct margins and gutter. The interior packs the solutions at the back, so the single file you upload passes KDP review.

## Generate once, export forever

One project unlocks for $4.99. After that, re-export any trim, any header or footer style, any time. No monthly subscription and nothing to cancel.

## How it works

1. Try a free puzzle. Use the free generator in your browser to make one sudoku and its solution, so you can see the output before you commit.
2. Pick a difficulty curve. In Publisher Studio, choose how many puzzles you want at each grade, from easy to evil, and the studio generates the whole graded book with unique solutions.
3. Choose your KDP trim and style. Pick a trim size, and a header and footer style. The interior is sized with the right margins and gutter for the page count so it passes KDP review.
4. Unlock once, export any size. Unlock the project for $4.99, then export the print-ready interior and solutions PDFs at any trim, as often as you like.

## Free tool or full studio

The [free generator](https://www.oncebooks.com/tools/sudoku-generator) makes one printable puzzle to try the engine. Publisher Studio is where you make a book to sell.

| Free generator | Publisher Studio |
| --- | --- |
| One puzzle and one solution page | Hundreds of graded puzzles with a packed solutions section |
| Large print only, printed from the browser | Every KDP trim, 300 DPI, print-ready PDFs |
| One difficulty at a time | A graded easy-to-evil difficulty curve |
| Nothing is saved once you close the tab | A durable project, re-export any size forever ($4.99) |

## One price, per project

$4.99

Paid once. Export unlimited formats, forever.

- Print-ready 300 DPI interior PDF
- Separate solutions PDF
- Every KDP trim size and format
- Re-export any size, any time

[Open Publisher Studio](https://app.oncebooks.com/publisher-studio/sudoku)

[Comparison Once Books vs Book Bolt A purpose-built puzzle-book maker you pay for once, versus an all-in-one KDP suite on a subscription.](https://www.oncebooks.com/compare/book-bolt)

## Questions

**How much does it cost?**

A project unlocks for $4.99, paid once. After that you can export the interior and solutions PDFs at any KDP trim, as many formats as you like, forever. There is no subscription.

**What do I get when I export?**

One print-ready 300 DPI interior PDF, with the solutions packed at the back, sized for the KDP trim you choose with the margins and gutter that pass review. That interior is the single file you upload to KDP. You also get a separate solutions PDF as an extra, handy if you want to print the solutions on their own.

**Are the puzzles guaranteed to have one solution?**

Yes. Every board is generated and verified to have exactly one solution, so nothing in the book is ambiguous or unsolvable. The printed solutions section matches every puzzle.

**Can I try it before I pay?**

Yes. The free sudoku generator makes a real 2-page puzzle in your browser with no sign-up. The unlock is only for a full multi-puzzle project you plan to publish.

**Can I sell the books I make?**

Yes. The exported interiors are yours to publish and sell on Amazon KDP or print yourself. The per-project unlock covers unlimited exports of that project.