Written by Official American Mensa Puzzle author, Tim Sole, this captivating collection of over 150 mind-bending conundrums is perfect for anyone seeking a challenge. Can you solve the almost impossible? Whether you're a seasoned puzzle solver or a newcomer, this collection promises a fun mental workout with a huge variety of fiendish puzzles. Inside you will find cryptic riddles, numerical conundrums, satisfying codebreakers and much more. So dive in and decode the baffling brainteasers designed to ignite your intellectual curiosity and boost your brain power.