What measures 4.5" wide by 5.75" high and provides hours of entertainment, yet makes time stand still? The Little Black Book of Brain Games, of course! Packed with dozens of puzzles and problems to entertain your brain, this pocket-sized book will challenge your skills with words, math, and logic. It's portable size and durable hardback format makes it easy for travel. Book lies flat for ease of use and the elastic band attached to back cover keeps your place or keeps book closed. Makes a perfect little gift book for your favorite puzzle fan! 208 pages.