Exercise your mind with this fabulous selection of 100 colour puzzles from Mensa, the world-famous high IQ society. Written by Robert Allen, the former director

This book contains hundreds of teasers for the ultimate, mind-challenge workout, with such features as number grids, scrostics, logic problems, arithmetic squar

Challenge yourself and excite your brain with this entertaining collection of new puzzles created in partnership with American Mensa and the AARP (American Asso

One of the best ways to keep your brain active and healthy is to regularly solve puzzles. Puzzles not only keep your mind fit by getting the brain cells working

The Genius Program s much more than a set of diverting and engaging puzzles - it will enable you to out-think and outperform everyone you know, either at work,