World's Hardest Killer Sudoku: Is Your IQ Good Enough To Solve These INSANE Puzzles? (World's Hardest Killer Sudoku Books)

If you like Sudoku but are bored with the usual type of puzzle these are the best puzzle books there are. I buy every one DJAPE publishes, and sometimes more than once. There just aren't any better puzzle books if you like more challenging puzzles. They are also printed on better quality paper than the typical puzzle book, which is very helpful if you need to do a lot of erasing (which I usually do with these hard puzzles). I love them!

This book has only 100 puzzles - what a beat. Don't like the layout either.

Excellent book. Djape has some of the finest puzzles. I have about fifteen of them. Highly recommended.

I love killer sudoku - and usually but the Times books. This volume was bought as I'd run out of my normal ones, and the next Times book wasn't due out for a while. I have to say, I HATE it .... it is so difficult to see the boundary lines of each square set of 9 numbers ..... took all of the enjoyment out of doing the puzzles. I hoped I'd get used to it, but instead the book has been abandoned to the bottom of a drawer, and I am now happily working my way through the latest Times volume. I won't be buying this type again.

Thank goodness there is someone out there producing killer sudokus with a high level of difficulty! I love these World's Hardest books - please do book 3! I tend to write a note after I finish each one, ranging fom 'easy' to 'extremely hard to start'! I love to be challenged, and no other killer sudokus are as difficult as these. I have bought both volumes more than once, as the thought of running out of Djape's books is unbearable.

I really enjoyed these puzzles, most took me about an hour to complete but some took several hours. It was nice having only challenging puzzles in one book. I am hoping they publish a volume 3 soon.

I just finished volume 1. These were a truly challenging set of Killer Sudokus. Best puzzles for ages.