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In the '80s Larry Atkin worked for [[Applied Concepts]] on [[Dedicated Chess Computers|dedicated chess computers]] and is mentioned along with [[David Slate]] as co-author of the [[Morphy#Gruenfeld|Gruenfeld]] and [[Morphy#Capablanca|Capablanca]] module programs for the [[Great Game Machine]] and the [[Chafitz Modular Game System|Chafitz modular game system]] . He is further sole author of the [[Steinitz#Edition4|Steinitz Edition 4]] <ref>[http://www.schach-computer.info/wiki/index.php/Chafitz_Steinitz_Edition Chafitz Steinitz Edition] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref> <ref>[https://en.wikipedia.org/wiki/Wilhelm_Steinitz Wilhelm Steinitz from Wikipedia]</ref>, and the [[Steinitz#Encore|Steinitz Encore]] <ref>[http://www.schach-computer.info/wiki/index.php/Chafitz_Steinitz_Encore Chafitz Steinitz Encore] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref>, both running on a 8-bit [[6502]] processor with 2 resp. 4 Mhz. Capablanca was later converted to be [[Chess 7.0]] for the [[Apple II]], [[Atari 8-bit|Atari 800]], and [[Commodore 64]] published by [https://en.wikipedia.org/wiki/Helix_%28database%29 Odesta]. Even later it became "How About a Nice Game of Chess" for the Apple IIe <ref>[http://www.talkchess.com/forum/viewtopic.php?t=24419 chess 7.0] by [[Will Singleton]], [[CCC]], October 16, 2008</ref> <ref>[http://www.spacious-mind.com/html/commodore_c64_chess_7_0.html Commodore 64/128 Old Computer Chess Game Collection - Chess 7.0] from [[The Spacious Mind]]</ref>. Along with Peter W. Frey, Larry Atkin is co-author of the [[Othello]] program ''Odin'' <ref>[http://www.othello.dk/book/index.php/Odin Odin - The Othello Wiki Book Project]</ref>, which also ran as module of the [[Great Game Machine]].