HOW LOGICAL ARE YOU? Test Your Aptitude for Deduction and Examine Your Ingenuity with 400 Puzzles

Created by some of the world's leading puzzle setters, this series of 400 stimulating conundrums has been designed to improve your concentration and boost your powers of deduction and reasoning. Contains simple riddles, straightforward ciphers and complicated lateral thinking puzzles and number patterns. Solutions provided. Fully illustrated in color.