Crack codes, solve clues, answer riddles, escape from mazes... Packed with a huge variety of puzzles, this entertaining write-in book is a great way to give your brain a workout and develop logical thinking skills. Write and draw your answers to puzzles perfectly pitched for age 7+. Along the way, you`ll also discover how your brain works and tips on how you can help it to work better. With links to more activities and help online, and all the answers in the back of the book.