Find out how brainy you really are--see if you can get a perfect score by solving all 100 puzzles. Use your sleuthing skills to check out a crowd of people who look the same to find the one kid who's different. Put together four small pictures that magically make one big picture. Study a street of houses and cars, then turn away and try to recall them all. (They're fiendishly designed to make it hard.) Examine some pieces of broken jars, then match them with pictures of what they looked like before they were broken. Find an animal's mate hidden among others that look almost like it. These puzzles are challenging, they're fun, and they'll give your brain the best workout ever!