Real/Alphanumerics

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A digit is tiny and invisible. But we think it’s the realest thing.

MathPuzzle

Geometric and mathy things, in the tradition of Martin Gardner. The site is several years stale—see the right-hand side: the archives and games. (For further puzzles, see The Griddle.)

Stephen Sondheim's Crosswords

A directory that links to old New York Magazine crosswords by way of Google Books. (Also going to put this video about David Astle here—I don’t want too many crossword sections.)