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Sam Loyd (1841-1911) was America's greatest originator of puzzles. For more than 50 years, his ingenious posers, ap
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One of the very few great innovators of puzzles, Sam Loyd (1841-1911) invented thousands of the most valuable, ingenious
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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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100 Man-made Problems — How to Make and Solve Them For centuries, puzzles have challenged the ingenuity, skill, intelli
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内容简介 · · · · · · Seasoned with Gardner's interest in the history and philosophy of science, this delightful book is
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