Buy Individual Puzzles All puzzles are delivered by email, in PUZ and PDF formats (with solution). Puzzle Perpetual Motion for $1 Puzzle Details This puzzle was published on Aug 30, 2016 by By Elizabeth C. Gorski. Perpetual Motion for $1 Recipient Recipient Email Address Send as a gift? Gift Options Include a personalized note Send at a later date? Send At Buy Now With Please enable JavaScript to continue.
