2018-Jan-16: I'm doing a lot of behind-the-scenes repairs on the website this month. If you notice that one of the pages has stopped working (probably because I "fixed" something else), please let me know, and I'll try to attend to it quickly.
Thank you for your patience and help! — Jim

Insane Sudoku Puzzles, Volume 16

Each of my books contains a collection of eight sudoku puzzles, 1-per-page, with a page of hints and a page of answers in the back.

These booklets are in PDF format and need the Adobe Acrobat Reader to view or print.

You can also download all 800 of these puzzles, in a more compact 4-per-page format ( with hints and answers, with answers but no hints, or with neither hints nor 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).

Problems printing puzzles in Internet Explorer 9? Try these work-arounds.

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

On the last book? Just send me a note, I'll make more!