This ultimate brain training puzzle book is packed with over 400 puzzles & solutions to help you reach your maximum mental potential. Organized by difficulty & type, this all-inclusive game book
Includes:: everything from language puzzles, letter equations & logic puzzles, to math & science teasers, probability puzzles, rebuses, riddles & trivia. Indulge your penchant for puzzles as you face challenge after challenge & give your brain the ultimate workout.