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Jan. 17, 2017
January 2017 Puzzle Periodical
January 2017 Puzzle Periodical; Puzzle created by Tim C., Applied Research Mathematician, NSA
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
July 21, 2015
July 2015 Puzzle Periodical
July 2015 Puzzle Periodical; Puzzle created by Stephen C., Applied Research Mathematician, NSA