Sep 1, 2022: Volumes 25 and 26 of Killer Sudoku are out! Happy puzzling!
sudoku preview

Sudoku Printables

Here are thousands of free Sudoku puzzles to print. Each booklet of printable Sudoku contains eight puzzles, instructions, hints and answers. If you like these puzzles, check out my other puzzles too!

Want to save some trees? Try my Interactive Sudoku, an online version of these puzzles that works on your browser or iPad.

Krazydad Sudokus are also available in a daily puzzle (for print or online).

Here's a blank sudoku grid in case you need to start over.

Krazydad Ephemeral Sudoku is my new Sudoku Quarterly, available on Amazon.

Each title will be available for just three months, and then will fade away, like tears in rain.

Your purchase will help support this free website.

Thank you!

Select a difficulty level:

Click here for the interactive puzzles
Insane sudoku are the hardest sudoku I offer. They cannot be solved without making guesses. I provide an extra scratch area on these puzzles for working out the solution, but it won't be much help!

My printable puzzles contain a page of hints in addition to a page of answers.

The hints are puzzle grids that contain numbers showing the order in which the squares were solved by my computer. Although this is not necessarily the order you would solve the puzzle, it's probably in the neighborhood.

Follow the numbered squares in order 1,2,3,4,5... until you find a square you haven't solved yet. This square (or the one or two immediately after it) is a good candidate to solve next.