PUZZLES CHALLENGES AND RIDDLES Author:Parragon Books Gathered together for your cogitation, mystification, gratification and discombobulation, these are 300 of the most perturbing paradoxes, crafty conundrums, and enticing enigmas known to humankind. Over 300 educational and fun puzzles and riddles are included in this timeless book, designed to help train your brain, pass the time, and provide ho... more »urs of fun!« less