World's Hardest Sudoku Book: 200 of the World's Toughest Sudoku Puzzles

Puzzles aren't really that hard but the format/layout has little margins (so if you use them for solving - this might not be the book for you)

This is finally the book that has defeated me. I did all the Will Shortz and Black Belt version, all the nasty ones. These a just A new level of hard. Go ahead and buy if you think you need harder ones.

My sister loves her new Sudoku book. So far she’s finding the these hard games challenging as she goes to harder ones.

The computer generated ratings for each puzzle are pointless. They seem to be very random. For example, a 0.76 rated puzzle can be ridiculously easy or hard. I truly don’t understand why they were included. If you are looking for a very difficult book, then perhaps some of these will challenge you. Just don’t necessarily rely on the ratings.

My brother is a long time user of Sudoku and enjoyed these very much because they were challenging

Given as a gift but wasn't too difficult to solve. There were alot of sudoku puzzles.

Took me 20 minutes to finish the first puzzle. If this book lasts for as long as it too to ship I’d be surprised

Not hard enough. I was looking for puzzles roku with both numbers bang alphabet Im them

Happy

Not the world's hardest, found some puzzles fairly easy probably rate it as mid to hard.

Great present

Nothing to dislike

My husband loves it. He says they are certainly challenging but not impossible. They are well set out and easy to read. He is very pleased I bought it for him.