Excel

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|| [[image:Excel68000.jpg with="260" link="http://www.flickr.com/photos/10261668@N05/859027346/in/set-72157600922170604"]] ||~ || **Excel**, (Fidelity Excel, 68000 Mach I, 68000 Mach II, 68000 Mach III, 68020 Mach IV)
a family of the [[Dedicated Chess Computers|dedicated]] [[Chess Challenger]] series by [[Fidelity Electronics]], produced and distributed from 1987 to 1989. The Excel had a 16-bit [[Sargon|Sargon III]] based [[68000]] program by [[Dan Spracklen|Dan]] and [[Kathe Spracklen]], and was the first dedicated unit featuring a [[Transposition Table|transposition table]] apparently with [[BCH Hashing|BCH hashing]] of < 16 KiB, 128 KiB for the **Mach II**, 64 KiB for the **Mach III**, 512 KiB for the [[68020]] **Mach IV**. Due to TTs, the Excel could solve the [[Lasker-Reichhelm Position]] in under a minute, but had some issues with [[Color Flipping|color flipped]] positions, f. i. in [[KBNK Endgame|KBNK]] <ref>[[http://www.schach-computer.info/wiki/index.php/Fidelity_Excel_68000|Fidelity Excel 68000]] from [[http://www.schach-computer.info/wiki/index.php/Hauptseite_En|Schachcomputer.info Wiki]] (German)</ref>. The Mach III and its successor, the [[68020]] 32-bit Mach IV were also shipped in other housings, such as the [[Elite|Elite Avant Garde V2]] <ref>[[http://www.schach-computer.info/wiki/index.php/Fidelity_Elite_V2|Fidelity Elite V2]] from [[http://www.schach-computer.info/wiki/index.php/Hauptseite_En|Schachcomputer.info Wiki]] (German)</ref> and Avant Garde V6 <ref>[[http://www.schach-computer.info/wiki/index.php/Fidelity_Elite_V6|Fidelity Elite V6]] from [[http://www.schach-computer.info/wiki/index.php/Hauptseite_En|Schachcomputer.info Wiki]] (German)</ref>, and the later Fidelity **Designer** models <ref>[[http://www.schach-computer.info/wiki/index.php/Fidelity_Designer_2265_Master|Fidelity Designer 2265 Master]] from [[http://www.schach-computer.info/wiki/index.php/Hauptseite_En|Schachcomputer.info Wiki]] (German)</ref> <ref>[[http://www.schach-computer.info/wiki/index.php/Fidelity_Designer_2325_Master|Fidelity Designer 2325 Master]] from [[http://www.schach-computer.info/wiki/index.php/Hauptseite_En|Schachcomputer.info Wiki]] (German)</ref>.
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|| Excel 68000 <ref>[[http://www.flickr.com/photos/10261668@N05/sets/72157600922170604/page3/| Flickr - Fotosharing - 2. Fidelity]] by [[Steve Blincoe|Chewbanta]]</ref>  ||~ ||^ ||
[[toc]]
=Master Rating=
The 68000 Mach III was rated 2265 by the [[http://en.wikipedia.org/wiki/United_States_Chess_Federation|United States Chess Federation`s]] Computer Rating Agency, an independent certifying body. The computer obtained that [[http://en.wikipedia.org/wiki/Chess_title#Master|Master rating]] by competing 48 tournament games against rated players <ref>[[Thorsten Czub]] (**1989**). //[[http://www.schach-computer.info/wiki/index.php/Fidelity_Excel_Mach_III#Er_wei.C3.9F.2C_was_er_wei.C3.9F|Er weiß, was er weiß - Der Mach III Master glänzt mit Wissen und Geschwindigkeit]]//. [[Computerschach und Spiele]] Heft 2 April-Mai 1989, hosted by [[http://www.schach-computer.info/wiki/index.php/Hauptseite_En|Schachcomputer.info Wiki]] (German)</ref>. The German Schach-computer Info Wiki mentions an (old) [[SSDF]]  rating of 1993 <ref>[[http://www.schach-computer.info/wiki/index.php/Fidelity_Excel_Mach_III|Fidelity Excel Mach III]] from [[http://www.schach-computer.info/wiki/index.php/Hauptseite_En|Schachcomputer.info Wiki]] (German)</ref> <ref>[[http://www.schach-computer.info/wiki/index.php/Wiki-Elo-Liste_En|Wiki-Elo-Liste]] from [[http://www.schach-computer.info/wiki/index.php/Hauptseite_En|Schachcomputer.info Wiki]]</ref>. 
|| [[image:mach3master.jpg width="260" link="http://www.flickr.com/photos/10261668@N05/859084808/in/set-72157600922170604"]] ||
|| Mach III Rating Certificate  <ref>[[http://www.flickr.com/photos/10261668@N05/sets/72157600922170604/page3/| Flickr - Fotosharing - 2. Fidelity]] by [[Steve Blincoe|Chewbanta]]</ref> ||
=See also=
* [[Elite]]
* [[Fidelity]]
* [[Fidelity Electronics]]
* [[Par Excellence]]

=Selected Publications=
* [[Thorsten Czub]] (**1989**). //[[http://www.schach-computer.info/wiki/index.php/Fidelity_Excel_Mach_III#Er_wei.C3.9F.2C_was_er_wei.C3.9F|Er weiß, was er weiß - Der Mach III Master glänzt mit Wissen und Geschwindigkeit]]//. [[Computerschach und Spiele]] Heft 2 April-Mai 1989, hosted by [[http://www.schach-computer.info/wiki/index.php/Hauptseite_En|Schachcomputer.info Wiki]] (German)

=Forum Posts=
* [[https://groups.google.com/d/msg/rec.games.chess/_5_aeOAu_tU/L-xvltCmClUJ|Zarkov vs. Mach III (10 games)]] by [[Stuart Cracraft]], [[Computer Chess Forums|rgc]], November 05, 1989 » [[Zarkov]]
* [[http://www.stmintz.com/ccc/index.php?id=365718|Fidelity Excel models]] by [[Alain Zanchetta]], [[CCC]], May 18, 2004
* [[http://www.stmintz.com/ccc/index.php?id=371874|Fidelity Excel Mach III design]] by [[Alain Zanchetta]], [[CCC]], June 22, 2004
* [[http://www.stmintz.com/ccc/index.php?id=386327|Inside Fidelity Excel Mach III]] by [[Alain Zanchetta]], [[CCC]], September 06, 2004
* [[http://www.stmintz.com/ccc/index.php?id=410027|Excel 68000 question]] by Matthew Hull, [[CCC]], February 07, 2005
* [[http://www.hiarcs.net/forums/viewtopic.php?t=1696|Rare Fidelity Excel Mach II on ebay]] by Larry, [[Computer Chess Forums|Hiarcs Forum]], September 09, 2008
* [[http://www.hiarcs.net/forums/viewtopic.php?t=2455|Difference between Fidelity Excel Mach3 versions...]] by Larry, [[Computer Chess Forums|Hiarcs Forum]], June 24, 2009
* [[http://www.hiarcs.net/forums/viewtopic.php?t=6598|The Fidelity Excel Mach II & The 1987 World Open]] by Cyberchess, [[Computer Chess Forums|Hiarcs Forum]], February 17, 2014

=External Links=
==Chess Computer==
* [[http://chesscomputer.org/fidelity-excel-68000-mach-iii-chess-challenger/|Chess Computer | Collectors Magazine | Fidelity | Excel 68000 | Mach III Chess Challenger]]
* [[http://electronicchess.free.fr/heroes.html#excel68000|Excel 68000 (Fidelity)]] from [[http://electronicchess.free.fr/index-UK.html|Electronicchess]]
* [[http://electronicchess.free.fr/heroes.html#excelmach3|Excel Mach III (Fidelity)]] from [[http://electronicchess.free.fr/index-UK.html|Electronicchess]]
* [[http://www.schach-computer.info/wiki/index.php/Fidelity_Excel_68000|Fidelity Excel 68000]] from [[http://www.schach-computer.info/wiki/index.php/Hauptseite_En|Schachcomputer.info Wiki]] (German)
* [[http://www.schach-computer.info/wiki/index.php/Fidelity_Excel_68000_Mach_II|Fidelity Excel 68000 Mach II]] from [[http://www.schach-computer.info/wiki/index.php/Hauptseite_En|Schachcomputer.info Wiki]] (German)
* [[http://www.schach-computer.info/wiki/index.php/Fidelity_Excel_Mach_III|Fidelity Excel Mach III]] from [[http://www.schach-computer.info/wiki/index.php/Hauptseite_En|Schachcomputer.info Wiki]] (German)
* [[http://www.schach-computer.info/wiki/index.php/Fidelity_Excel_Mach_IV|Fidelity Excel Mach IV]] from [[http://www.schach-computer.info/wiki/index.php/Hauptseite_En|Schachcomputer.info Wiki]] (German)
* [[http://thorstenczub.de/oldie1.html|Oldie-Artikel 1]] by [[Thorsten Czub]] (German)
==Misc==
* [[http://en.wikipedia.org/wiki/Excel|Excel (disambiguation) from Wikipedia]]
> [[http://en.wikipedia.org/wiki/Microsoft_Excel|Microsoft Excel from Wikipedia]]
* [[http://en.wikipedia.org/wiki/Excellent|Excellent (disambiguation) from Wikipedia]]
* [[http://en.wikipedia.org/wiki/Excelsior|Excelsior (disambiguation) from Wikipedia]]
* [[http://en.wikipedia.org/wiki/Mach|Mach (disambiguation) from Wikipedia]]

=References= 
<references />
=What links here?= 
[[include component="backlinks" page="Excel" limit="40"]]
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