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=ACM 1981 Blitz=
An improved version of Cyrus appeared at the [[ACM 1981|ACM Speed Chess Tournament 1981]], running on an [https://en.wikipedia.org/wiki/Osborne_Computer_Corporation Osborne] Z80 microcomputer and matched against [[Mainframe Programs|mainframe programs]], beating [[Cray Blitz]] and [[Chess (Program)|Chess 4.5]], and only losing to [[Belle]] <ref>[[Tony Harrington]] ('''1983'''). ''Winner Takes All''. [[Personal Computer World]], [http://www.chesscomputeruk.com/html/publication_archive_1983.html September 83], [http://www.chesscomputeruk.com/Richard_Lang0001.pdf pdf] hosted by [[Mike Watters]], [http://www.chesscomputeruk.com/index.html Chess Computer UK]</ref>.
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[Event "ACM 1981 Speed Tournament"]
At the [[European MCC 1982|3rd European Microcomputer Chess Championship]], September 1982, [[La Regence]] became strong runner up behind [[Advance|Advance 2.4]], while Cyrus II itself didn't quite come up to its expectations. Lang: 'It was written in such a hurry and the tournament came in the middle of its development period rather than at the end'. There were quite a few new ideas in the program, and he didn't have much time to test them before the tournament. The new ideas were a combination of running faster and implementing new [[Knowledge|chess knowledge]], by getting it to recognize [[Isolated Pawn|isolated]] and [[Doubled Pawn|doubled pawns]] and the like <ref>[[Tony Harrington]] ('''1983'''). ''Winner Takes All''. [[Personal Computer World]], [http://www.chesscomputeruk.com/html/publication_archive_1983.html September 83], [http://www.chesscomputeruk.com/Richard_Lang0001.pdf pdf] hosted by [[Mike Watters]]</ref>. Various programs derivate from Cyrus competed at the [[European MCC 1983|4th European Microcomputer Chess Championship]], September 1983. Cyrus 2.5 finished best (4th) of the home computer programs tied with [[White Knight|White Knight 11]] by [[Martin Bryant]], behind [[Advance|Advance 3.0]] and [[Chess 2001]].
=Cyrus 68K=
''see main article [[Cyrus 68K]]''
=See also=
* [[Cyrus 68K]]
=External Links=
==Chess Program==
* [http://www.chesscomputeruk.com/html/chess_computers_-_the_uk_story.html Chess Computers - The UK Story] from [http://www.chesscomputeruk.com/index.html Chess Computer UK] by [[Mike Watters]]
* [http://www.worldofspectrum.org/infoseekid.cgi?id=0001214 Cyrus IS Chess - World of Spectrum]
* [http://www.mobygames.com/game/cyrus Cyrus for DOS (1985)] from [https://en.wikipedia.org/wiki/MobyGames MobyGames]
* [http://members.chello.at/theodor.lauppert/games/chess.htm Chess and Computers]
==Misc==
* [https://en.wikipedia.org/wiki/Cyrus_(disambiguation) Cyrus (disambiguation) from Wikipedia]
* [https://en.wikipedia.org/wiki/Cyrus_I Cyrus I from Wikipedia], King of [https://en.wikipedia.org/wiki/Anshan_%28Persia%29 Anshan]
* [https://en.wikipedia.org/wiki/Cyrus_the_Great Cyrus the Great from Wikipedia], grandson of [https://en.wikipedia.org/wiki/Cyrus_I Cyrus I] and the founder of the [https://en.wikipedia.org/wiki/Achaemenid_Empire Achaemenid Empire]
=References=
<references />
'''[[Engines|Up one level]]'''
[[Category:Commercial]]
[[Category:Z80]]
[[Category:6502]]
[[Category:6800]]
[[Category:68000]]
[[Category:8086]]
[[Category:Spectrum]]
[[Category:CPC]]
[[Category:C64]]
[[Category:Apple II]]
[[Category:PC]]
[[Category:Nobility]]
