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English: Martin Gardner (October 21, 1914May 22, 2010) was an American mathematics and science writer specializing in recreational mathematics, but with interests encompassing micromagic, stage magic, literature (especially the writings of Lewis Carroll), philosophy, scientific skepticism, and religion. He wrote the Mathematical Games column in Scientific American from 1956 to 1981, the Notes of a Fringe-Watcher column in Skeptical Inquirer from 1983 to 2002, and published over 70 books.
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- ► Missing square puzzle (26 F)