July 17, 2018

July 2018 Puzzle Periodical - Marble Math

NSA Puzzle Periodical for July 2018: Marble Math

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

July 21, 2015

July 2015 Puzzle Periodical

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