Take control of your mental workout with Mindworks Brain Training puzzle book! Unlike other puzzle collections, this book is designed by teams of experts to stimulate specific areas of the brain and target the associated mental processes. This two-in-one compendium contains everything you need to hone these essential faculties. Each section focuses on improving a particular set of left-brain cognitive abilities. This edition now includes bonus additional puzzles each! This book includes over 300 full-color puzzles and solutions with comprehensive explanations, as well as difficulty ratings and suggested time limits for each puzzle so that you can easily find a puzzle to suit your current level and progress as your mental agility increases.