Packed with over 500 puzzles to super-charge your brain cells, this book is a lively and accessible IQ puzzle book for adults, aimed at boosting mental faculties in an amusing and entertaining way. Divided into 20 sections of equal length, ranging from simple quizzes at the beginning to fiendishly difficult logic puzzles towards the end, this book contains enough visual, verbal and numerical puzzles to keep puzzle fanatics busy for hours.