I just found a book in the Kindle bookstore that (incompetently) rips off some of my sudoku puzzles. The book is called “The Most Difficult and Hardest Sudoku Puzzles” and is “copyrighted” by one Johnny Cohen. Here’s the cover:

The cover helpfully informs you that the book is a BEST SELLER. Here’s a sample of the text.

Interestingly, my original copyright notices are plastered throughout the entire book. The “author” apparently attempted to produce the book by using one or more of my PDF files as source to Amazon’s Digital Publishing program, but their text-processor eliminated all the puzzle graphics, resulting in a confusing jumble of numbers and krazydad copyright notices.

I only found out about this because somewhat bought the book, and asked me how to solve the strangely formatted puzzles.

I’m in the process of filing a copyright infringement notice, but feel free to post some amusing reviews on the Amazon page for your entertainment. I think I’m going to have to check to see if any of my puzzles have been more successfully ripped off. If you spot any other krazydad puzzles in the Kindle store, let me know!

UPDATE: Oh gee, I just found two more.

800-Tough-Sudoku-Puzzles by Naeem the Krazy Boy

The Super-Tough Sudoku Puzzles To Solve 800 Most Difficult And Extreme Sudoku Puzzles You Ever Gonna Solve In Your Life – Buy It Now – Red Hot Edition

UPDATE #2:

The number of these things is up to 9 12 now (that’s just from searching the Kindle store for “Sudoku 800” and “Sudoku 1200”). Sigh… I have some paperwork to do this weekend, I guess…