Helpful Score: 3
Good book. I think it's good mental exercise for the young and old alike. I'm 59 and believe that it helped me use my brain like I have not in many, many years. It even made me realize that I'd better get with a program physically also!
This was great for the kids. They loved the different kinds of puzzles and the way to figure them out. Lots of ways to use the puzzles and lets them go at their own pace. Fun book.