200 Devilishly Difficult Sudoku Puzzles

200 “Devilishly Difficult Sudoku Puzzles” for people who want to tax their brains and get a great sense of achievement.
Take time out from your busy schedule and have a little quality time with these difficult but fun puzzles.

This book is a collection of 200 previously unpublished Devilishly Difficult Sudoku puzzles. Perfect for the expert solver in need of a constant supply of difficult puzzles or someone wanting to take a step up in their sudoku ‘career’. This book will provide hours of absorbing, brain teasing entertainment.

You can find out more information here – https://www.amazon.com/dp/1071049178

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