Proprietor of Holdfast Computing .
Author of SAM Go, an interactive Go board for two players, which implemented the rules of Go but had no ability to play the game itself.
Guy has published mathematical papers on polyhedra and a short collection of SF stories, Nobody Steals my Air. He is currently (2018) working on a biography of the aeronaut and philosopher J.W. Dunne.
Where are they now?
Guy went on to become a technical author and IT systems engineer, until he retired around 2013.
He is currently (2018) a freelance writer.