An old favorite-- Mensa Math & Logic Puzzles --gets a brand-new look: it's now in color! And the puzzles are fantastic: they're the kind of challenge found at the World Puzzle Championships, and they require no language to solve. For example, you are given a grid of dots that has some numbers (0, 1, 2, or 3) in them. You need to connect the dots in one continuous path so that each number is surrounded by that many lines. So a "3" means that three...