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Fiendish Sudoku Book

Welcome to this fabulous collection of 100 fiendish sudoku!

Gathered inside this book are some of the most testing and tricky sudoku puzzles you will find. Ready for a challenge? Put your puzzle solving skills to the test and see if you can crack them all. You don't need any advanced mathmatical skills to complete these puzzles, they can all be solved using logic alone.

Puzzles will of course require all the usual solving rules from standard easy and medium to solve, but that won't be enough with these fiendish puzzles: they also require harder rules. You'll need to look at sets of numbers (for instance if exactly two squares in a row can contain the values of 2 and 5 then, no matter how many other candidates in those squares, you know they can be eliminated as these two squares must contain 2 and 5 in that row). And for many of the puzzles you'll also need X-Wings: if you don't know what that solving rule is then you can have fun working it out, or just read inside the book!

We have included some great solving tips and full solutions to help you along the way. Beware- Once you start, you won't be able to stop!

Good luck and happy solving

If you would like to try one of the puzzles before buying this book, please click the link below:

Pages from fiendish sudoku

The book of fiendish sudoku is available to purchase right now from Amazon.co.uk, Amazon.com and Amazon.eu. Please click the relevant link below to purchase this book via Amazon:

If you're based in Europe but outside the UK, then this book is also available on the version of Amazon in your country.
fiendish sudoku cover

fiendish sudoku interior


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