Mensa - Puzzle Challenge: Complex Problems To Baffle Your Brain

This book contains more than 100 full colour puzzles, in graded levels of difficulty. Exercise your mind with this fabulous selection of 100 full-colour puzzles from Mensa, the world-famous high IQ society. Between the covers of this book you'll find a treasury of brain-teasers such as visual puzzles, games and riddles, all graded in difficulty, to tax the mind. This book is guaranteed to provide you with hours of fun, all while you give your mind a wonderful workout. Robert Allen was the Editorial Director of Mensa Publications. He was highly involved with Mensa for much of his life and wrote a huge amount of puzzle, game and self-help books.