What is the best free sudoku generator?
Updated 15 September 2026
The best free sudoku generator makes a printable board and its solution in a click, with no sign-up, and guarantees exactly one solution. Our free generator does that at every difficulty, using the same engine as our KDP studio.
A free generator is perfect for a single puzzle for home or the classroom. Pick a difficulty, press generate, and print two pages: the board and its solution. Try the free sudoku generator.
To make a book you can sell, you need hundreds of graded puzzles, the right KDP trim size and a print-ready file. That is the job of Publisher Studio.