The ultimate book of Mensa-crafted puzzles, brainteasers, word games, number conundrums, and logical mysteries to test your intelligence Puzzle fans have bought more than 650,000 copies of the Mensa Genius Quiz series-the only books that let readers "match wits with Mensa," comparing how well they do against members of the famous high-IQ society. Here, in a giant omnibus edition, are four best-selling titles: The Mensa Genius Quiz...