1K ZX Chess

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|| [[image:1KZXChessArtic.jpg link="http://www.zx81stuff.org.uk/zx81/generated/tapeinfo/0/1KZXChess%28Artic%29.html"]] ||~   || **1K ZX Chess**,
a chess program for the [[Sinclair ZX81]], written in 1982 by [[David Horne]] in [[Z80]] [[Assembly]] with a code size of 672 bytes, including the [[User Interface|user interface]], as published with listing in [[Your Computer]], February 1983 <ref>[[David Horne]] (**1983**). //[[http://users.ox.ac.uk/~uzdm0006/scans/1kchess/|Full ZX-81 Chess in 1K]]//. [[Your Computer]], February 1983</ref> . 1K ZX Chess was commercially market by the author himself <ref>[[http://zx81stuff.org.uk/zx81/showmag.php?mag=SinclairUser/Issue003/Pages/SinclairUser00300061.jpg|Magazine Page Scan from World of Spectrum, June 1982]]</ref>, and soon by [[Artic Computing]] <ref>[[http://www.zx81stuff.org.uk/zx81/showmag.php?mag=SinclairUser/Issue004/Pages/SinclairUser00400044.jpg|Magazine Page Scan from World of Spectrum, July 1982]]</ref> <ref>[[http://www.zx81stuff.org.uk/zx81/generated/tapeinfo/0/1KZXChess%28Artic%29.html|ZX81 Cassette Tape Information for 1K ZX Chess]] (Artic)</ref> , a software development company set up by Richard Turner <ref>[[http://yourcomputeronline.wordpress.com/tag/brendon-gore/|Brendon Gore]] (**1982**). //[[http://yourcomputeronline.wordpress.com/2011/02/27/interview-one-degree-in-artic/|Interview-One Degree In Artic]]//. [[Your Computer]], [[http://yourcomputeronline.wordpress.com/2011/02/23/may-1982-contents-and-editorial/|May 1982]]</ref> and [[Chris Thornton]] <ref>[[http://en.wikipedia.org/wiki/Artic_Software|Artic Software from Wikipedia]]</ref> , a chess programmer himself, and author of [[Spectrum Chess]] <ref>[[http://www.worldofspectrum.org/infoseekpub.cgi?regexp=%5EChris+A.+Thornton$&loadpics=1|Chris A. Thornton - World of Spectrum]]</ref> , which competed at the [[European MCC 1982]] and [[European MCC 1983|1983]], and [[Turbo Chess (GB)|Turbo Chess]] for the [[ZX Spectrum]] <ref>[[http://www.worldofspectrum.org/infoseekid.cgi?id=0005457|Turbo Chess - World of Spectrum]]</ref> .

1K ZX Chess was further released by [[Sinclair|Sinclair Research]] in 1982 <ref>[[http://www.zx81stuff.org.uk/zx81/generated/tapeinfo/0/1KZXChess.html|ZX81 Cassette Tape Information for 1K ZX Chess]]</ref> . The program could only play white starting either with 1.e4 or 1.d4. [[Castling]], [[Promotions|promotions]] and [[En passant|en passant]] were not implemented, while a version for the unexpanded 2K [[http://en.wikipedia.org/wiki/Timex_Sinclair_1000|Timex Sinclair 1000]] includes these moves <ref>[[http://my.stratos.net/~hewston95/RTM56/RTM56.html#ZX81|Retrogaming Times Monthly - Issue #56 - January 2009]]</ref> . ||
|| Artic Cover <ref>[[http://www.zx81stuff.org.uk/zx81/generated/tapeinfo/0/1KZXChess%28Artic%29.html|ZX81 Cassette Tape Information for 1K ZX Chess]] (Artic)</ref> ||~   ||^   ||
[[toc]]
=Screenshot= 
|| [[image:1kZXChess.JPG width="199" height="215" link="http://www.zx81stuff.org.uk/zx81/generated/tapeinfo/0/1KZXChess.html"]] ||
|| 1K ZX Chess <ref>[[http://www.zx81stuff.org.uk/zx81/generated/tapeinfo/0/1KZXChess.html|ZX81 Cassette Tape Information for 1K ZX Chess]]</ref> ||

=See also=
* [[Spectrum Chess]]
* [[SuperChess]]
* [[ZX Chess]]
* [[ZX Spectrum Chess]]

=Publications= 
* [[http://yourcomputeronline.wordpress.com/tag/brendon-gore/|Brendon Gore]] (**1982**). //[[http://yourcomputeronline.wordpress.com/2011/02/27/interview-one-degree-in-artic/|Interview-One Degree In Artic]]//. [[Your Computer]], [[http://yourcomputeronline.wordpress.com/2011/02/23/may-1982-contents-and-editorial/|May 1982]]
* [[David Horne]] (**1982**). //[[http://yourcomputeronline.wordpress.com/2012/10/21/chess-in-1k/|Chess in 1K]]//. [[Your Computer]], [[http://yourcomputeronline.wordpress.com/2012/10/04/december-1982-contents-and-editorial/|December 1982]]
* [[David Horne]] (**1983**). //ZX-81 Chess//. [[Your Computer]], [[http://yourcomputeronline.wordpress.com/2012/11/03/january-1983-contents-and-editorial/|January 1983]]
* [[David Horne]] (**1983**). //[[http://users.ox.ac.uk/~uzdm0006/scans/1kchess/|Full ZX-81 Chess in 1K]]//. [[Your Computer]], February 1983

=Forum Posts= 
* [[http://groups.google.com/group/comp.lang.c/browse_frm/thread/19a9a3ada5f2791e|World smallest chess program]] by [[Óscar Toledo Gutiérrez]], [[http://groups.google.com/group/comp.lang.c/topics|comp.lang.c]], November 22, 2006
* [[http://www.schachcomputer.info/forum/f11/schachcomputer-vergleich-zu-alte-computerschach-spiele-1948-2.html|Turnier: Schachcomputer vergleich zu alte Computerschach Spiele]] by [[The Spacious Mind|Spacious Mind]], [[http://www.schachcomputer.info/forum/portal.php|Schachcomputer.info Forum]], August 12, 2008 (German)

=External Links= 
* [[http://en.wikipedia.org/wiki/1K_ZX_Chess|1K ZX Chess from Wikipedia]]
* [[http://users.ox.ac.uk/~uzdm0006/scans/1kchess/assem.html|1K ZX81 Chess Z80 Assembly listing]] © Copyright [[David Horne]]
* [[http://zx81stuff.org.uk/zx81/generated/publisherinfo/d/DRHorne.html|ZX81 Publisher Information for D. R. Horne]]
> [[http://zx81stuff.org.uk/zx81/showmag.php?mag=SinclairUser/Issue003/Pages/SinclairUser00300061.jpg|Magazine Page Scan from World of Spectrum, June 1982]]
* [[http://www.zx81stuff.org.uk/zx81/generated/tapeinfo/0/1KZXChess%28Artic%29.html|ZX81 Cassette Tape Information for 1K ZX Chess]] (Artic)
> [[http://www.zx81stuff.org.uk/zx81/showmag.php?mag=SinclairUser/Issue004/Pages/SinclairUser00400044.jpg|Magazine Page Scan from World of Spectrum, July 1982]]
* [[http://www.zx81stuff.org.uk/zx81/generated/tapeinfo/0/1KZXChess.html|ZX81 Cassette Tape Information for 1K ZX Chess]]
* [[http://www.mobygames.com/game/1k-zx-chess|1K ZX Chess for ZX81 (1982)]], [[http://en.wikipedia.org/wiki/MobyGames|MobyGames]]
* [[http://www.kuro5hin.org/story/2001/8/10/12620/2164|The greatest program ever written | kuro5hin.org]], Aug 10, 2001
* [[http://malevolent.com/weblog/archive/2010/09/07/1k-chess-showdown/|1K Chess Showdown - malevolent design weblog]]
* [[http://www.andreadrian.de/schach/|Computer Schach]] by [[Andre Adrian]] (German)
* [[http://web.archive.org/web/20071221115817/http://classicchess.googlepages.com/Chess.htm|Classic Computer Chess - ... The programs of yesteryear]] by [[Carey Bloodworth|Carey]], hosted by the [[https://en.wikipedia.org/wiki/Internet_Archive|Internet Archive]] <ref>[[http://www.talkchess.com/forum/viewtopic.php?t=56938&start=2|Re: Old programs CHAOS and USC]] by [[Dann Corbit]], [[CCC]], July 11, 2015</ref>
* [[http://en.chessbase.com/post/the-world-s-smallest-chess-engines|The world's smallest chess engines]] by [[Albert Silver]], [[ChessBase|ChessBase News]], September 23, 2015 » [[1K ZX Chess]], [[BootChess]], [[Toledo|Toledo Nanochess]], [[Micro-Max]]

=References= 
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=What links here?= 
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