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There were a few didactic chess programs written in Basic, most notably a program by [[Dieter Steinwender]] published 1984 in [[Computerschach und Spiele]] <ref>[https://www.stmintz.com/ccc/index.php?id=286508 qBASIC Chess program - from 1984 by Dieter Steinwender] by [[Michael Byrne|Mike Byrne]], [[CCC]], February 23, 2003</ref> , [[Demoschach]] by [[Hans-Joachim Kraas]] and [[Günther Schrüfer]] <ref>[http://www.rainerbartel.de/ Rainer Bartel], [[Hans-Joachim Kraas]], [[Günther Schrüfer]] ('''1985'''). ''[https://www.c64-wiki.de/wiki/Das_grosse_Computerschachbuch Das große Computerschachbuch]''. [https://en.wikipedia.org/wiki/Data_Becker Data Becker] (German)</ref> , and [[Minimax (program)|Minimax]] by [[Chrilly Donninger]] and [[Dieter Steinwender]]<ref>[https://www.stmintz.com/ccc/index.php?id=286619 Re: Another qBASIC Chess program -Dieter Steinwender (in english+comment] by Tony Worsman, [[CCC]], February 24, 2003</ref>, which was later converted to [[WinBoard]] by [[Thomas McBurney]] <ref>[http://home.pacific.net.au/%7Etommyinoz/minimax.html Minimax in BASIC] converted to [[WinBoard]] by [[Thomas McBurney]]</ref> .