NSA’s 2016 Puzzle Periodical

NSA CSS:

Intelligence. It’s the ability to think abstractly. Challenge the unknown. Solve the impossible. 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 this month’s problem written by a member of our expert workforce.