Book Synopsis Challenge yourself and excite your brain with this entertaining collection of new puzzles created in partnership with American Mensa and the AARP (American Association of Retired People). Young or old, your brain is essential to everything you do. You owe it to yourself not just to stay physically fit, but to stay mentally fit, too! This book of logic and number puzzles will help you do just that. A collaboration between Mensa and AARP, it is packed with brain teasers to exercise your mind and keep yourself sharp. Whether you are looking to practice your critical thinking skills or you just want to keep your mind sharp, these puzzles will provide a short workout for your cognitive lobes. In the end, you'll have given your mind a problem-solving workout--and you'll have had fun in the process. Challenge yourself and help keep your mind sharp with these brain-bending games and puzzles. About the Author Fred Coughlin has a PhD in inorganic chemistry, and has been solving and creating puzzles since childhood. He also published puzzles in The Art of Puzzles and on PuzzlePicnic.com, and has appeared as a contestant on Who Wants to Be a Millionaire? and Wheel of Fortune . He is happily married, with three daughters who are on their way to becoming avid puzzlers themselves. American Mensa has members who range in age from 2 to 102, and the community includes people from every walk of life. They include engineers, homemakers, teachers, actors, athletes, students, and CEOs, and all share one trait--high intelligence. To qualify for Mensa, our members scored in the top 2 percent of the general population on an accepted standardized intelligence test. AARP is the nation's largest nonprofit, nonpartisan organization dedicated to empowering Americans 50 and older to choose how they live as they age. With nearly 38 million members and offices in every state, the District of Columbia, Puerto Rico, and the U.S. Virgin Islands, AARP works to strengthen communities and advocate for what matters most to families with a focus on health security, financial stability and personal fulfillment. AARP also works for individuals in the marketplace by sparking new solutions and allowing carefully chosen, high-quality products and services to carry the AARP name. As a trusted source for news and information, AARP produces the world's largest circulation publications, AARP The Magazine and AARP Bulletin.