132 Toughest Sudoku Puzzles That Will Put Your Expertise to The Test

Tuesday, October 21, 2014

Devil Sudoku, a new PDF book by Conceptis featuring ultra challenging Sudoku puzzles, is now available for download on the Book Store. The book contains 132 Classic Sudoku puzzles in tough difficulty levels that will put your expertise to the test.

Some of the world's toughest Sudoku puzzles

Download a free 8-puzzle sampler now, or buy the whole book at 500 Conceptis Credits and start challenging yourself with some of the world's toughest Sudoku puzzles!

Download Book / Sampler

Download on the Book Store

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