Sudoku Puzzle Generator
Generate Sudoku puzzles for Amazon KDP puzzle books and self-publishing. Get 100s of Sudoku puzzles with PublishKAT one-click puzzle maker.
Features
How to Play
- Fill every empty cell with a digit (1–4 for 4×4, 1–9 for 9×9, etc.).
- Each digit must appear exactly once in every row.
- Each digit must appear exactly once in every column.
- Each digit must appear exactly once in every bold-outlined box (sub-grid).
- Some cells are pre-filled as clues — these cannot be changed.
Example (Medium Difficulty)
Puzzle
Solution
How It Works
Our Sudoku generator uses a backtracking algorithm to create valid, unique-solution puzzles. Difficulty is controlled by the number of given cells and the solving techniques required.
Sudoku puzzle books are the best-selling puzzle category on Amazon KDP by far. With grid sizes from 4×4 to 16×16, easy to hard difficulty levels, and auto-generated solutions, PublishKAT helps you create professional Sudoku books in minutes. Whether you're building a large-print Sudoku book for seniors or a mini Sudoku book for kids, you have everything you need for self-publishing.
Publishing on Amazon KDP is completely free — there are no upfront costs or inventory to manage. Amazon uses print-on-demand, which means your book is only printed when a customer places an order. Amazon handles the printing, shipping, and customer service, and you earn a royalty on every sale. It's the easiest way to turn your puzzle content into a passive income stream.