Description: Expand your mind with this exciting collection of mental challenges—more than 100—from the seemingly simple to the almost impossible. Mystify your mind with more than 100 brainteasers. This provocative collection of puzzles will test your solving skills with an assortment of lateral thinking problems, confounding conundrums, extreme enigmas, almost-impossible IQ questions, and perplexing physics quandaries. Try to solve the mystery of a death in a locked room, how a woman figured out a crafty cabbie had lied to her, why a wife was crying over her expensive birthday present, and more!