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A spy reveals startling secrets and carries out a breathless mission in an astonishing guide that takes the 'Ologies to a new level. The year is 1958, and British spy Spencer ... More
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All the games your brain can handle. More
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It s possible to train your brain, give your memory a quick pick-me-up, and alleviate the effects of aging. The mind deteriorates when it s not kept active, but this ... More
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Stephanie Spadaccini's puzzles have appeared in The New York Times, People, Modern Maturity, and many other publications. Fully illustrated, this fun book of puzzles she ... More
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Keep your brain in shape with these entertaining brainteasers! Scientific research shows that your brain needs exercise just like the rest of your body. Solving simple, short ... More
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An incredibly successful, entertaining series! Just one look at these die-cut, amusingly shaped books, and it's obvious that puzzle fans have good reason to rejoice! With more ... More
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Don t let that brain get flabby! Flexing the frontal lobes keeps them in shape, and when better to do it than when the body is otherwise occupied? Flush with the success of ... More
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Thorough, systematic introduction to serious cryptography, especially strong in modern forms of cipher solution used by experts. Simple and advanced methods. 166 specimens to ... More
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What number best completes the series? What anagrams don t belong? Which pattern satisfies the analogy? No cheating! Flex that brain muscle and see how intelligent you really ... More
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