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Give your brain a healthy workout—Anytime, Anywhere. Not just any book of games, this collection by the bestselling au
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Puzzles are an important educational learning tools as they provide many skills and mental learning benefits and opportu
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A balanced, scientific, and practical approach to monitoring and maintaining your brain's agility and mental health
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THE MOST WIDE-RANGING, VISUALLY APPEALING, ENTERTAINING, GIGANTIC COLLECTION OF BRAINTEASERS SINE SAM LOYD'S CYCLOP
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Looking for puzzles to challenge and entertain? Look no further! To solve these mysteries, you'll have to deduce th
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More than 100 puzzles are included, split into a variety of different types to make it as varied and challenging as poss
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What’s real? What’s not? Reality is strange—and seeing isn’t believing. When you look at an optical illusion, your brain
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Divide a rectangular cake into five even pieces, calculate the cost of running a successful casino, figure out the maxim
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Over 400 puzzles to keep you amused — they’re fast and not too tough! A clever new collection offers a fun and satisfyi
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