Aug. 21, 2018

August 2018 Puzzle Periodical - Crop Calculations

NSA Puzzle Periodical for August 2018: Crop Calculations

July 17, 2018

July 2018 Puzzle Periodical - Marble Math

NSA Puzzle Periodical for July 2018: Marble Math

June 19, 2018

June 2018 Puzzle Periodical - Mug Math

NSA Puzzle Periodical for June 2018: Mug Math

May 15, 2018

May 2018 Puzzle Periodical - Shall We Play a Game? Computer Tic-Tac-Toe

NSA Puzzle Periodical for May 2018: Computer Tic-Tac-Toe

April 17, 2018

April 2018 Puzzle Periodical - 'APRIL = MATH'

April 2018 NSA Puzzle Periodical - 'APRIL = MATH' - Mathematics and Statistics Awareness Month Challenge by Benjamin E.

March 20, 2018

March 2018 Puzzle Periodical - a, b, c - Variable Alphabet Equation

March 2018 NSA Puzzle Periodical - a, b, c - Variable Alphabet Equation by Wendell W.

Feb. 20, 2018

February 2018 Puzzle Periodical - A Plethora of Penguins

February 2018 Puzzle Periodical; Puzzle created by David B., NSA Mathematician

Jan. 16, 2018

January 2018 Puzzle Periodical - Snow Manipulation

January 2018 Puzzle Periodical; Puzzle created by James M., NSA Operations Researcher

Dec. 19, 2017

December 2017 Puzzle Periodical - Reindeer Games!

December 2017 Puzzle Periodical - Reindeer Games; Puzzle created by Benjamin E., NSA Mathematician

Nov. 21, 2017

November 2017 Puzzle Periodical - Twisted Sequences

November 2017 Puzzle Periodical - Twisted Sequences; Puzzle created by Wendell W., NSA Mathematician

Oct. 17, 2017

October 2017 Puzzle Periodical - Jumping Kangaroos

October 2017 Puzzle Periodical - Jumping Kangaroos; Puzzle created by David B., NSA Mathematician

Sept. 19, 2017

September 2017 Puzzle Periodical - Arabella's Spider Web

September 2017 Puzzle Periodical - Arabella's Spider Web; Puzzle created by Katrina J., NSA Mathematician

Aug. 15, 2017

August 2017 Puzzle Periodical - Solar Scramble

April 2017 Puzzle Periodical - What is the Connection?; Puzzle created by Wendell W., NSA Mathematician

July 18, 2017

July 2017 Puzzle Periodical - Weekend Volunteering

July 2017 Puzzle Periodical - Solve the Connection; Puzzle created by Chris B., NSA Capability Development Analyst

June 20, 2017

June 2017 Puzzle Periodical - Solve the Connection

June 2017 Puzzle Periodical - Solve the Connection; Puzzle created by Wendell W., NSA Mathematician

May 18, 2017

May 2017 Puzzle Periodical - A Plate of 1,000 Cookies

May 2017 Puzzle Periodical - A Plate of 1,000 Cookies; Puzzle created by David B., NSA Mathematician

April 18, 2017

April 2017 Puzzle Periodical - What is the Connection?

April 2017 Puzzle Periodical - What is the Connection?; Puzzle created by Wendell W., NSA Mathematician

March 21, 2017

March 2017 Puzzle Periodical - Lucky Seven

March 2017 Puzzle Periodical - Lucky Seven; Puzzle created by David G., NSA Mathematician

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.

April 21, 2016

April 2016 Puzzle Periodical

April 2016 Puzzle Periodical; Puzzle created by Andy F., Applied Research Mathematician, NSA

Oct. 2, 2015

October 2015 Puzzle Periodical

October 2015 Puzzle Periodical; Puzzle created by Ben E., Applied Research Mathematician, NSA

Sept. 15, 2015

September 2015 Puzzle Periodical

September 2015 Puzzle Periodical; Puzzle created by Tim C., Applied Research Mathematician, NSA

Aug. 18, 2015

August 2015 Puzzle Periodical

August 2015 Puzzle Periodical; Puzzle created by Roger B., Cryptanalytic Mathematician, NSA

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 21, 2015

July 2015 Puzzle Periodical

July 2015 Puzzle Periodical; Puzzle created by Stephen C., Applied Research Mathematician, NSA