So You Think You're Smart: 150 Fun and Challenging Brain Teasers
So You Think You're Smart is a delightful book of word games that the entire family can enjoy. All games are concise, uncomplicated and, most of all, a lot of fun. They are about ordinary words and things that everybody knows about so only common knowledge and a bit of resourcefulness are needed to solve them. The games are only one of the fun features. All answers are encrypted! Each is given on the same page as the game, but is printed upside-down and backward - as in a mirror image. To ensure that they cannot be accidentally read, the answers are further obscured by using italics and a reduced size type. A mirror is needed to reveal the answers - and a special unbreakable plastic one is provided with each book. So You Think You're Smart has proven popularity. It is now in its 19th printing.