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Created page with "'''Home * Engines * Excel''' FILE:Excel68000.jpg|border|right|thumb|link=https://www.flickr.com/photos/10261668@N05/859027346/in/set-72157600922170604| E..."
'''[[Main Page|Home]] * [[Engines]] * Excel'''
[[FILE:Excel68000.jpg|border|right|thumb|link=https://www.flickr.com/photos/10261668@N05/859027346/in/set-72157600922170604| Excel 68000 <ref>[https://www.flickr.com/photos/10261668@N05/albums/72157600922170604/page2 Flickr - Fotosharing - 2. Fidelity] by [[Steve Blincoe|Chewbanta]]</ref> ]]
'''Excel''', (Fidelity Excel, 68000 Mach I, 68000 Mach II, 68000 Mach III, 68020 Mach IV)<br/>
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>[https://www.schach-computer.info/wiki/index.php/Fidelity_Excel_68000 Fidelity Excel 68000] from [https://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>[https://www.schach-computer.info/wiki/index.php/Fidelity_Elite_V2 Fidelity Elite V2] from [https://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref> and Avant Garde V6 <ref>[https://www.schach-computer.info/wiki/index.php/Fidelity_Elite_V6 Fidelity Elite V6] from [https://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref>, and the later Fidelity '''Designer''' models <ref>[https://www.schach-computer.info/wiki/index.php/Fidelity_Designer_2265_Master Fidelity Designer 2265 Master] from [https://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref> <ref>[https://www.schach-computer.info/wiki/index.php/Fidelity_Designer_2325_Master Fidelity Designer 2325 Master] from [https://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref>.
=Master Rating=
[[FILE:mach3master.jpg|border|right|thumb|link=ttps://www.flickr.com/photos/10261668@N05/859084808/in/album-72157600922170604/| Mach III Rating Certificate <ref>[https://www.flickr.com/photos/10261668@N05/albums/72157600922170604/page2 Flickr - Fotosharing - 2. Fidelity] by [[Steve Blincoe|Chewbanta]]</ref> ]]
The 68000 Mach III was rated 2265 by the [https://en.wikipedia.org/wiki/United_States_Chess_Federation United States Chess Federation`s] Computer Rating Agency, an independent certifying body. The computer obtained that [https://en.wikipedia.org/wiki/Chess_title#Master Master rating] by competing 48 tournament games against rated players <ref>[[Thorsten Czub]] ('''1989'''). ''[https://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 [https://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>[https://www.schach-computer.info/wiki/index.php/Fidelity_Excel_Mach_III Fidelity Excel Mach III] from [https://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref> <ref>[https://www.schach-computer.info/wiki/index.php/Wiki-Elo-Liste_En Wiki-Elo-Liste] from [https://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki]</ref>.
=See also=
* [[Elite]]
* [[Excellence]]
* [[Excelsior]]
* [[Fidelity]]
* [[Fidelity Electronics]]
* [[Par Excellence]]
=Selected Publications=
* [[Thorsten Czub]] ('''1989'''). ''[https://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 [https://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)
* [[Shawn Benn]], [[Danny Kopec]] ('''1993'''). ''The Bratko-Kopec Test Recalibrated.'' [[ICGA Journal#16_3|ICCA Journal, Vol. 16, No. 3]] » [[Bratko-Kopec Test]]
=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]]
* [https://www.stmintz.com/ccc/index.php?id=365718 Fidelity Excel models] by [[Alain Zanchetta]], [[CCC]], May 18, 2004
* [https://www.stmintz.com/ccc/index.php?id=371874 Fidelity Excel Mach III design] by [[Alain Zanchetta]], [[CCC]], June 22, 2004
* [https://www.stmintz.com/ccc/index.php?id=386327 Inside Fidelity Excel Mach III] by [[Alain Zanchetta]], [[CCC]], September 06, 2004
* [https://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://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]
* [https://www.schach-computer.info/wiki/index.php/Fidelity_Excel_68000 Fidelity Excel 68000] from [https://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)
* [https://www.schach-computer.info/wiki/index.php/Fidelity_Excel_68000_Mach_II Fidelity Excel 68000 Mach II] from [https://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)
* [https://www.schach-computer.info/wiki/index.php/Fidelity_Excel_Mach_III Fidelity Excel Mach III] from [https://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)
* [https://www.schach-computer.info/wiki/index.php/Fidelity_Excel_Mach_IV Fidelity Excel Mach IV] from [https://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==
* [https://en.wikipedia.org/wiki/Excel Excel (disambiguation) from Wikipedia]
: [https://en.wikipedia.org/wiki/Microsoft_Excel Microsoft Excel from Wikipedia]
* [https://en.wikipedia.org/wiki/Excellent Excellent (disambiguation) from Wikipedia]
* [https://en.wikipedia.org/wiki/Excelsior Excelsior (disambiguation) from Wikipedia]
* [https://en.wikipedia.org/wiki/Mach Mach (disambiguation) from Wikipedia]
=References=
<references />
'''[[Engines|Up one level]]'''
[[Category:Dedicated]]
[[FILE:Excel68000.jpg|border|right|thumb|link=https://www.flickr.com/photos/10261668@N05/859027346/in/set-72157600922170604| Excel 68000 <ref>[https://www.flickr.com/photos/10261668@N05/albums/72157600922170604/page2 Flickr - Fotosharing - 2. Fidelity] by [[Steve Blincoe|Chewbanta]]</ref> ]]
'''Excel''', (Fidelity Excel, 68000 Mach I, 68000 Mach II, 68000 Mach III, 68020 Mach IV)<br/>
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>[https://www.schach-computer.info/wiki/index.php/Fidelity_Excel_68000 Fidelity Excel 68000] from [https://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>[https://www.schach-computer.info/wiki/index.php/Fidelity_Elite_V2 Fidelity Elite V2] from [https://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref> and Avant Garde V6 <ref>[https://www.schach-computer.info/wiki/index.php/Fidelity_Elite_V6 Fidelity Elite V6] from [https://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref>, and the later Fidelity '''Designer''' models <ref>[https://www.schach-computer.info/wiki/index.php/Fidelity_Designer_2265_Master Fidelity Designer 2265 Master] from [https://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref> <ref>[https://www.schach-computer.info/wiki/index.php/Fidelity_Designer_2325_Master Fidelity Designer 2325 Master] from [https://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref>.
=Master Rating=
[[FILE:mach3master.jpg|border|right|thumb|link=ttps://www.flickr.com/photos/10261668@N05/859084808/in/album-72157600922170604/| Mach III Rating Certificate <ref>[https://www.flickr.com/photos/10261668@N05/albums/72157600922170604/page2 Flickr - Fotosharing - 2. Fidelity] by [[Steve Blincoe|Chewbanta]]</ref> ]]
The 68000 Mach III was rated 2265 by the [https://en.wikipedia.org/wiki/United_States_Chess_Federation United States Chess Federation`s] Computer Rating Agency, an independent certifying body. The computer obtained that [https://en.wikipedia.org/wiki/Chess_title#Master Master rating] by competing 48 tournament games against rated players <ref>[[Thorsten Czub]] ('''1989'''). ''[https://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 [https://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>[https://www.schach-computer.info/wiki/index.php/Fidelity_Excel_Mach_III Fidelity Excel Mach III] from [https://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref> <ref>[https://www.schach-computer.info/wiki/index.php/Wiki-Elo-Liste_En Wiki-Elo-Liste] from [https://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki]</ref>.
=See also=
* [[Elite]]
* [[Excellence]]
* [[Excelsior]]
* [[Fidelity]]
* [[Fidelity Electronics]]
* [[Par Excellence]]
=Selected Publications=
* [[Thorsten Czub]] ('''1989'''). ''[https://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 [https://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)
* [[Shawn Benn]], [[Danny Kopec]] ('''1993'''). ''The Bratko-Kopec Test Recalibrated.'' [[ICGA Journal#16_3|ICCA Journal, Vol. 16, No. 3]] » [[Bratko-Kopec Test]]
=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]]
* [https://www.stmintz.com/ccc/index.php?id=365718 Fidelity Excel models] by [[Alain Zanchetta]], [[CCC]], May 18, 2004
* [https://www.stmintz.com/ccc/index.php?id=371874 Fidelity Excel Mach III design] by [[Alain Zanchetta]], [[CCC]], June 22, 2004
* [https://www.stmintz.com/ccc/index.php?id=386327 Inside Fidelity Excel Mach III] by [[Alain Zanchetta]], [[CCC]], September 06, 2004
* [https://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://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]
* [https://www.schach-computer.info/wiki/index.php/Fidelity_Excel_68000 Fidelity Excel 68000] from [https://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)
* [https://www.schach-computer.info/wiki/index.php/Fidelity_Excel_68000_Mach_II Fidelity Excel 68000 Mach II] from [https://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)
* [https://www.schach-computer.info/wiki/index.php/Fidelity_Excel_Mach_III Fidelity Excel Mach III] from [https://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)
* [https://www.schach-computer.info/wiki/index.php/Fidelity_Excel_Mach_IV Fidelity Excel Mach IV] from [https://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==
* [https://en.wikipedia.org/wiki/Excel Excel (disambiguation) from Wikipedia]
: [https://en.wikipedia.org/wiki/Microsoft_Excel Microsoft Excel from Wikipedia]
* [https://en.wikipedia.org/wiki/Excellent Excellent (disambiguation) from Wikipedia]
* [https://en.wikipedia.org/wiki/Excelsior Excelsior (disambiguation) from Wikipedia]
* [https://en.wikipedia.org/wiki/Mach Mach (disambiguation) from Wikipedia]
=References=
<references />
'''[[Engines|Up one level]]'''
[[Category:Dedicated]]
