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NSA's Puzzle Periodical

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.

Feb. 21, 2017

February 2017 Puzzle Periodical - What is the Connection?

February 2017 Puzzle Periodical; Puzzle created by Wendell W., NSA Cryptanalyst

Jan. 17, 2017

January 2017 Puzzle Periodical

January 2017 Puzzle Periodical; Puzzle created by Tim C., Applied Research Mathematician, NSA

Dec. 20, 2016

December’s Puzzle Periodical - Four Rats in a Star

NSA's Puzzle Periodical

Nov. 15, 2016

November Puzzle Periodical – The Heist

NSA's Puzzle Periodical

Oct. 18, 2016

October Puzzle Periodical - CyberChance

NSA's Puzzle Periodical

Sept. 20, 2016

September Puzzle Periodical - Javelin

Can you figure out the correct answer for the September Puzzle Periodical?

Aug. 17, 2016

August Puzzle Periodical - $50 for All

Can you figure out the correct answer for the August Puzzle Periodical?

July 19, 2016

July Puzzle Periodical - First or Second?

Can you figure out the correct answer for the July Puzzle Periodical?

June 21, 2016

June 2016 Puzzle Periodical

Can you figure out the correct answer for the June Puzzle Periodical?

May 17, 2016

May 2016 Puzzle Periodical

Check out the May Puzzle Periodical to see if you can unlock the right answer for a birthday surprise.