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July 21, 2015
Announcing NSA's Puzzle Periodical
NSA employees work on some of the world‘s most demanding and exhilarating high-tech engineering challenges. Applying complex algorithms and expressing difficult cryptographic problems in terms of mathematics is part of the work NSA employees do every day. Try your hand at a problem written by a member of our expert workforce.
July 2015 Puzzle Periodical
July 2015 Puzzle Periodical; Puzzle created by Stephen C., Applied Research Mathematician, NSA