Boris 2.5 / Sargon 2.5 1980 Applied Concepts Capablanca Edition: Master Chess Endgame 1981 Applied Concepts Capablanca-S Edition: Master Chess Endgame 1982 Applied Concepts Gruenfeld Edition: Master Chess Openings 1981 Applied Concepts Gruenfeld-S Edition: Master Chess Openings 1982 Applied Concepts Las Vegas 21: Master Blackjack 1980 Applied Concepts Morphy Edition: Master Chess 1981 Applied Concepts Sandy Edition: Master Chess 1981 Sandy Electronic Odin Edition: Master Reversi 1981 Applied Concepts Steinitz Edition-4: Master Chess 1982 Applied Concepts