Mensa Logic Brainteasers Author:Ken Russell This book contains a fiendish collection of over 150 mind games to tax your powers of logic in ways you had never thought possible! All kinds of logic problem are included in this Mensa-branded book that will ensure your brain cells never have a chance to rest! The book doesn't follow a structure - the puzzles are not in any particular order by ... more »type or difficulty - so the reader can never be sure what logical challenge lurks over the page.« less