Pretty good but i think that they were a bit hard

This book is really good, full of intresting and challanging puzzles. They're a bit hard, but very clever. I reccomend this book!

This book was great it had some very good riddles and puzzles I did have a hard time with some puzzles but that is what makes this book fun to read.

the puzzles were pretty good.

This book took a lot of thinking in my brain.