Richard+Lang

a British professional computer chess programmer. He is author of the mighty chess programs Cyrus, Psion and Chess Genius, and their respective dedicated incarnations, most notably the Psion and Chess Genius programs inside Mephisto computers, dominating microcomputer chess in the 80s and 90s with ten World Microcomputer Chess Championship titles in a row, from 1984 until 1995.
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 * [[image:richardlang.jpg link="http://members.home.nl/matador/chess820.htm"]] ||~  || **Richard Lang**,

After first trials, Richard Lang started his computer chess programming career in January 1981 after he had absorbed Dan and Kathe Spracklen's book about Sargon which provided a complete Z80 Assembly listing. He saw several ways to improve, not only in speed, but also in better algorithms and ways of obtaining a score for chess positions. || toc =Photos= =Cyrus= Lang's first chess program, Cyrus, was written in Z80 Assembly. It had an astonishing debut at the 2nd European Microcomputer Chess Championship at the PCW Show in September 1981 in [|London], winning all five games and the tournament. Lang immediately was offered two contracts by David Levy and Kevin O’Connell, one for Cyrus, and one to work as programmer for Intelligent Software. Lang accepted, and turned his hobby into a job. Cyrus for Sinclair was his first commercial entry, followed by programs for various dedicated chess computers merchandised by //Intelligent Software//, as well a further improved version of Cyrus.
 * Richard Lang ||~  ||^   ||
 * [[image:Ossi_Weiner_Manfred_Hegener_Richard_Lang_1985.jpg width="553" height="415" link="http://www.ismenio.com/mephisto.html"]] ||
 * Ossi Weiner, Manfred Hegener and Richard Lang, WMCCC 1985 ||
 * [[image:4-3a.NACCC-Reno.Mephisto.Lang-Richard.1989.102645409.MONTY_NEWBORN.lg.jpg width="557" height="438" link="http://www.computerhistory.org/chess/full_record.php?iid=stl-431f4cc15086b"]] ||
 * Lang playing Mephisto at the ACM 1989 in [|Reno] ||
 * Lang playing Mephisto at the ACM 1989 in [|Reno] ||

=Psion= In about 1983 Richard Lang started to write his new program Psion for 68000 based processors. He was about to abandon the work for Intelligent Software, who continued their own work by owning the Cyrus brand by primary programmer Mark Taylor, yielding in Cyrus 68K. Psion Chess was marketed first by Sinclair Research for [|Sinclair QL] computers and later under [|Psion's] own label for Apple Macintosh, Atari ST and in late 1983 for the IBM PC with 8086/88 processors.

=Mephisto and Genius= In 1985 Lang started to collaborate with Hegener & Glaser and Ossi Weiner, porting Psion to their dedicated Mephisto chess computers. Psion evolved to Chess Genius, also ported to PC's for the MS-DOS operating system, and later to Windows. Lang's Mephisto programs dominated the microcomputer chess scene from the mid 80s until the beginning of the 90s. He was multiple World Microcomputer Chess Champion, last title with Genius (shared with MChess) at the WMCCC 1995. In 1994 during the Intel Grand Prix Cycle in London, Genius won a speed chess game (25-minutes per side) against [|Garry Kasparov].

=Quotes= Quote by Kaare Danielsen from his WMCCC 1987 report

=Resume= In 2002 Richard Lang founded his own company, merchandising Chess Genius for various platforms with focus on [|PDA] and [|mobile phones], recently also for Android. In an 2003 interview, Richard Lang stated that there is still much of Cyrus in current versions of Chess Genius. For example, he had never used quiescence searches and relied instead on a static swap off routine. More recently he has failed to make progress with top PC programs. In part perhaps due to his programming techniques do not scale well on very fast hardware. The program has become very complex, and unfortunately the complexity seems necessary and new ideas have not really worked.

=Publications=
 * Tony Harrington (**1983**). //Winner Takes All//. Personal Computer World, [|September 83], [|pdf] hosted by Mike Watters
 * Göran Grottling (**1987**). //Mr. Lang, wo bleibt die Tiefe? Ein Interview mit Richard Lang//. Modul 4/87, [|pdf] hosted by Hein Veldhuis (German, translation from Swedish PLY magazine)
 * Richard Lang (**1989**). //The Ninth World Microcomputer Chess Championship//. ICCA Journal, Vol. 12, No. 4
 * Staff (**1995**). //An Interview with Richard Lang//. Computer Chess Reports Vol. 5 No. 3+4 pp. 63
 * Richard Lang (**1995**). //Chess Genius 4//. Computer Chess Reports Vol. 5 No. 3+4 pp. 80
 * [|Richard Lang - Question & Answer Interview given to a German magazine in 2003], pdf hosted by Mike Watters, [|Chess Computer UK]

=External Links=
 * [|Richard Lang's ICGA Tournaments]
 * [|ChessGenius. World class chess software] © Lang Software Limited
 * [|Sinclair QL Computer Wiki - Richard Lang]
 * [|Chess Computers - The UK Story] from [|Chess Computer UK] by Mike Watters
 * [|Lang, Richard] from [|Schachcomputer.info - wiki] (German)
 * [|Meet the Authors] by Ed Schröder

=References= =What links here?= include page="Richard Lang" component="backlinks" limit="100"
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