The Little Giant Book of Brain Twisters

Book excerpt: Get smart--give your brain a super-sized workout that's fun, challenging, and mind-expanding! You'll really have to keep your wits about you as you tackle six big sections filled with puzzles and tricks of every sort, from the visual to the verbal. Try critical thinking and lateral thinking questions, where you'll have to "work outside the box," forget your assumptions, and look at the problem from a fresh viewpoint. Whodunits have all the pleasures of a mystery--but you're the detective trying to figure it out! Be "number one" at math conundrums, and open your eyes and look sharp when you tackle the picture puzzles and optical illusions. Give this a shot and find out if you can be a "toothpick architect"! Build a house using 11 toothpicks as shown in the diagram. See if you can make the house face the opposite direction by moving only one toothpick. Answer: Move one of the toothpicks in the roof.