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[[FILE:kenKen-joe.JPG|none|border|text-bottom|580px|link=httphttps://cmwww.bell-labs.com/cmusr/cs/whodmr/dmrwww/ken-games.html]] Belle, [[Joe Condon]] and [[Ken Thompson]] revisiting the [[ACM 1978|1978 ACM]] [[Blitz|Blitz 6.5]] - Belle game (1982) <ref>[https://en.wikipedia.org/wiki/Dennis_Ritchie Dennis Ritchie] ('''2001'''). ''[httphttps://cmwww.bell-labs.com/cmusr/csdmr/who/dmrwww/ken-games.html Ken, Unix, and Games]'', [http://ilk.uvt.nl/icga/journal/contents/content24-2.htm ICGA Journal, Vol. 24. No. 2]</ref> <ref>Editor ('''1979'''). ''Will Blitz be next year's champ?'' [[Personal Computing]], Vol. 3, No. 7, pp. 80, July 1979</ref>