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Created page with "'''Home * Engines * Chess Challenger''' FILE:4-2.Sensory_Chess_Challenger.Fidelity_Electronics.1982.102633899.lg.jpg|border|right|thumb|link=http://www.co..."
'''[[Main Page|Home]] * [[Engines]] * Chess Challenger'''
[[FILE:4-2.Sensory_Chess_Challenger.Fidelity_Electronics.1982.102633899.lg.jpg|border|right|thumb|link=http://www.computerhistory.org/chess/full_record.php?iid=art-431614f446c99| Sensory Chess Challenger, 1982, [[6502]] <ref>[http://www.computerhistory.org/chess/full_record.php?iid=art-431614f446c99 Sensory Chess Challenger, 1982] from [[The Computer History Museum]]</ref> ]]
'''Chess Challenger''', or '''Fidelity Chess Challenger''',<br/>
was a series of [[Dedicated Chess Computers|dedicated chess computers]] produced and market by [[Fidelity Electronics]]. The ''Chess Challenger 1'' was the first commercial chess computer of its kind in [[Timeline#1976|1976]], invented by [[Sidney Samole]], with a program by [[Ron Nelson]], developed for an [https://en.wikipedia.org/wiki/Altair_8800 Altair 8800] Microcomputer with an [[Intel]] [[8080]] CPU. Further versions of Nelson's program run on a more advanced [[Z80]] CPU, great commercial success was the ''Chess Challenger 7'' <ref>[http://www.schach-computer.info/wiki/index.php/Fidelity_Chess_Challenger_7 Chess Challenger 7] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref> in 1979. [[Ed English]], an early game programmer affiliated with Fidelity Electronics in 1979/80, improved the [[Alpha-Beta|alpha-beta]] implementation to double the playing speed <ref>[http://www.linkedin.com/pub/ed-english/7/413/307 Ed English | LinkedIn]</ref>.
=Photos =
[[FILE:CC1Proto.JPG|none|border|text-bottom|640px|link=http://www.ismenio.com/fidelity.html]]
Chess Challenger Prototype, 1976, [[8080]] <ref>Chess Challenger Prototype from [http://www.uschesstrust.com/2009/11/01/world-chess-hall-of-fame-sidney-samole-museum-to-relocate-in-2010/ World Chess Hall of Fame and Sidney Samole Chess Museum], see [[Sidney Samole]] and [http://www.ismenio.com/fidelity.html Fidelity Electronics] from [http://www.ismenio.com/chess_computers.html chesscomputers.org]</ref> .
=Sargon becomes Challenger=
In 1980, when [[Dan Spracklen|Dan]] and [[Kathe Spracklen]] started to collaborate with Samole, a [[6502]] Version of Chess Challenger was built for a [[Sargon|Sargon III]] port. The 6502 was better suited for Sargon than [[Z80]]. Excerpt from their oral history how it went with Fidelity <ref>[http://www.computerhistory.org/trustee/gardner-hendrie Gardner Hendrie] ('''2005'''). ''Oral History of Kathe and Dan Spracklen''. [http://archive.computerhistory.org/projects/chess/related_materials/oral-history/spacklen.oral_history.2005.102630821/spracklen.oral_history_transcript.2005.102630821.pdf pdf] from [[The Computer History Museum]]</ref> :
So, that’s about the time we started looking at Fidelity again. We got in contact with Sid Samole, who was the President of the company, and he said, “Well, come out and see us and bring your- what you got out there and show it to us.” And so we got on a plane and flew out to Miami, and showed off our program to him. And they had their chief engineer, Ron Nelson, look at it, and they were impressed. And so they offered us a big contract, basically, to go to work for them, basically, fulltime. And we didn’t have to go to Miami. We could stay in San Diego.
They had the Chess Challenger 1, I think, out at the time, or 2, and they were looking for something better. Our program, that we brought with us, just shellacked their program. We had a little tournament there, in Miami, just a little, between us, on our- the one we brought with us. And they were impressed.
And we continued to sell both through, or Sargon, through Hayden. So Fidelity didn’t mind that. The said that’s cool. They didn’t see it as a competition with them.
==WMCCC 1980, MCC 1980==
The immediate success was the lucky win of the [[WMCCC 1980|1st World Microcomputer Chess Championship]], September 4 to 9, 1980, in London. Chess Challenger with a 6502 CPU, notably winning last three of five rounds against three of four other [[Sargon]] incarnations! While the [[ICGA]] tournament site states a Z80A CPU <ref>[https://www.game-ai-forum.org/icga-tournaments/tournament.php?id=13 1st World Microcomputer Chess Championship - ICGA Tournaments]</ref>, [[Kevin O’Connell]] reported the World Microcomputer Chess Champion was equipped with a [https://en.wikipedia.org/wiki/MOS_Technology MOS Technology] processor, despite newest Fidelity computers were shipped with Z80/Z80A <ref>[[Kevin O’Connell]] ('''1980'''). ''World Microcomputer Chess Championship''. [https://en.wikipedia.org/wiki/Personal_Computer_World Personal Computer World], [http://www.chesscomputeruk.com/html/publication_archive.html November 1980]</ref>. As further confirmed by Fidelity Electronics' Vice President [[Myron Samole]] in an [[Personal Computing#5_1|Personal Computing]] interview, the Champion Sensory Challenger, which also won the [[MCC 1980]] at September 5 to 7 in [https://en.wikipedia.org/wiki/San_Jose,_California San Jose, California] had a program written around the 6502 chip <ref> [[Harry Shershow]] ('''1981'''). ''The MyChess-CSC Confrontation at San Jose''. [[Personal Computing#5_1|Personal Computing, Vol. 5, No. 1]], pp. 79-81</ref>.
[[FILE:ChessChallengerBroschure.jpg|none|border|text-bottom|link=http://www.flickr.com/photos/10261668@N05/859069920/sizes/l/in/photostream/]]
German Chess Challenger brochure with [https://en.wikipedia.org/wiki/Heinz_Haber Prof. Heinz Haber] endorsement <ref>[http://www.flickr.com/photos/10261668@N05/859069920/in/photostream Grand Master Voice 1980 Brochure | Flickr - Fotosharing] by [[Steve Blincoe|Chewbanta]]</ref> <br/>
''Chess Challenger Sensory Voice'' <ref>[http://www.schach-computer.info/wiki/index.php/Fidelity_Chess_Challenger_Voice Fidelity Chess Challenger Voice] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref>, a [[Z80]] based Nelson Program as Micro Champ? <ref>[http://www.schach-computer.info/wiki/index.php/Fidelity_CC_Sensory_Voice Fidelity CC Sencory Voice] was a [[Z80]] based Nelson program, and not the [[6502]] based Spracklen program which won the [[WMCCC 1980]]</ref>
|
==WCCC 1980==
The ''Chess Challenger'' which played the [[WCCC 1980]] end of September in Linz and finished last was presumably an older Z80 based computer with a Nelson program <ref>[https://www.computerwoche.de/a/mikros-noch-ohne-grossmeister-format,1191318 Sargon immer noch Marktführer:: Mikros noch ohne Großmeister-Format], [[Computerworld#Woche|Computerwoche]], November 28, 1980 (German)</ref>. Fidelity's flagship end of the 70s, with World Champion 1980 advertisement was the ''Chess Challenger Sensory Voice''. The first 6502 based computer with a Spracklen program commercially available appeared in 1981 as ''Champion Sensory Chess Challenger'' <ref>[http://www.schach-computer.info/wiki/index.php/Fidelity_CC_Champion Fidelity CC Champion] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref> .
==ACM 1980==
The strong third place at the [[ACM 1980]] in October was again a great success, only losing to [[Belle]] in the last round <ref>[http://www.computerwoche.de/heftarchiv/1981/4/1185023/ "Belle" wurde auch US-Champion 1980: Frecher Schachzwerg beweist Kaltblütigkeit], January 23, 1981, [[Computerworld#Woche|Computerwoche]] 3/1981 (German)</ref>. Description given from the ACM booklet with mentioned authors Dan and Kathe Spracklen, Ronald Nelson, [[Frank Duason]] <ref>[http://www.computerhistory.org/chess/full_record.php?iid=doc-431614f6cdeeb The Eleventh ACM's North American Computer Chess Championship], [http://archive.computerhistory.org/projects/chess/related_materials/text/3-1%20and%203-2%20and%203-3.1980_11th_ACM_NACCC/The_Eleventh_ACMs_North_American_Computer_Chess_Championship.1980.062303015.sm.pdf pdf] from [[The Computer History Museum]]</ref>
This marks the first appearance in an ACM tournament for this popular machine. Chess Challenger is written in assembly language for a 6502 microprocessor. It has 20k bytes of memory and executes about 1,000,000 inst/sec. A book of about 1,000 moves is used. The program uses the [[Alpha-Beta|alpha-beta]] algorithm with [[Iterative Deepening|iterative deepening]].
=Name Confusion=
Using the same name at almost the same time for programs with different authors and CPU architectures caused some confusion by potential customers, not to mention tournament organizers. Accordant to their product lineup and nomination, and caused by former tournament rules, permitting multiple, but different named entries from the same author, and commercial availability of participating computers, Fidelity Electronics somehow was "forced" to continue the naming obfuscation in further tournaments, where Fidelity computers with Spracklen programs participated as [[Fidelity|Fidelity X]], Challenger-X, [[Elegance]], [[Elite]], [[Private Line]], and [[Sensory 9|Sensory]].
<span id="ChallengerX"></span>
=Chess Challenger X=
==ACM 1986==
In 1986, at the [[ACM 1986|17th ACM North American Computer Chess Championship]], Fidelity showed up with a huge experimental, parallel machine, named ''Chess Challenger X''. Authors were [[Ron Nelson]], [[Dan Spracklen]], [[Kathe Spracklen]], and [[Danny Kopec]] as [[Opening Book Authors|Book author]]. It had a [[Z80]] controller, and 16 or more [[68000]] 16-bit processors. The controller was written in [[C]], the 16 or more Spracklen programs in [[Assembly|assembler]] <ref>[http://www.computerhistory.org/chess/full_record.php?iid=doc-431614f6ca4a7 The ACM's Seventeenth North American Computer Chess Championship and The Sixth World Microcomputer Chess Championship] from [[The Computer History Museum]], [http://archive.computerhistory.org/projects/chess/related_materials/text/3-1%20and%203-2%20and%203-3%20and%204-3.1986_17th_NACCC/1986%20NACCC.062303062.sm.pdf pdf]</ref>.
Chess Challenger X scored 50%, losing from [[Rebel|Recom]] and [[Belle]]. Notably, in the same tournament, another Fidelity computer programmed by the Spracklens with a Kopec book took part, as [[Fidelity|Fidelity Experimental]] with a [[68020]] processor. It did not score better in that strong field and finally placed 10th.
==ACM 1988==
At the [[ACM 1988]], the new experimental version of a [[68030]] based micro called ''Chess Challenger X'' showed a remarkable performance. Mentioned authors from the tournament report by [[Monroe Newborn|Monty Newborn]] and [[Danny Kopec]] <ref>[[Monroe Newborn|Monty Newborn]] and [[Danny Kopec]] ('''1989'''). ''Results of The Nineteenth ACM North American Computer Chess Championship'', in [http://www.computerhistory.org/chess/full_record.php?iid=doc-431614f6cb3a1 The Twentieth ACM North American Computer Chess Championship] from [[The Computer History Museum]], [http://archive.computerhistory.org/projects/chess/related_materials/text/3-1%20and%203-2%20and%203-3%20and%204-3.1989_20th_NACCC/1989%20NACCC.062303064.sm.pdf pdf]</ref> were [[Dan Spracklen|Dan]] and [[Kathe Spracklen]] as well as [[Ron Nelson]]. The 32-bit program, written in 68030 [[Assembly|assembly]] language, drew [[Deep Thought]] and won versus [[Waycool]], the current World Champion [[Cray Blitz]], and [[HiTech]]. Chess Challenger X was likely the forerunner of the commercial available ''Fidelity Elite Avant Garde V9'' <ref>[http://www.schach-computer.info/wiki/index.php/Fidelity_Elite_V9 Fidelity Elite Avant Garde V9] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref> . One year later, at the [[WCCC 1989]] in Edmonton, a similar machine, presumably with a further developed program, played under the name [[Fidelity|Fidelity X]] and finished sixth.
=CC Clones=
* [[Cassia Chess Mate]]
* [[SC 1]]
* [[SC 2]]
=See also=
* [[Fidelity]]
* [[Fidelity Electronics]]
* [[Ron Nelson]]
* [[Sidney Samole]]
* [[Dan Spracklen]]
* [[Kathe Spracklen]]
* [[Fidelity Electronics#SpracklensAppleICE|Spracklens with Apple II ICE]]
=Publications=
==1978 ...==
* Editor ('''1978'''). ''Black-box war''. [[Personal Computing#2_11|Personal Computing, Vol. 2, No. 11]], pp. 17, November 1978 » [[Boris]]
* Don Gerue, Russ McNeil ('''1979'''). ''Chess Challenger-10 wins Microchess Tourney''. [[Personal Computing#3_1|Personal Computing, Vol. 3, No. 2]], pp. 63 » [[The Penrod Memorial Microchess Tournament]]
* John Larkins ('''1979'''). ''Inside Chess Challenger''. [[Personal Computing#3_11|Personal Computing, Vol. 3, No. 11]], pp. 78
* Editor ('''1979'''). ''Misadvantages of a Chess Traveler''. [[Personal Computing#3_12|Personal Computing, Vol. 3, No. 12]], pp. 75
==1980 ...==
* [[Sidney Samole]] ('''1980'''). ''[http://books.google.com/books?id=aQYEAAAAMBAJ&pg=PA69&lpg=PA69&dq=Penrod+Memorial+Computer+Chess+Tournament&source=bl&ots=vot1MjdYMk&sig=C642qqnzAXoay6eiwRF5zxSXd80&hl=en&sa=X&ei=VJOwUKbaFo6RswaR-oDgBQ&redir_esc=y#v=onepage&q&f=false Genius Offspring]''. [https://en.wikipedia.org/wiki/Kiplinger%27s_Personal_Finance Changing Times], refers [[Personal Computing#3_2|Personal Computing, February 1979]]
* [[Evan Katz]] ('''1980'''). ''Chess Challenger's Voice comes out of Both Sides of its Mouth''. [[Personal Computing#4_5|Personal Computing, Vol. 4, No. 5]], pp. 80
* [[Harry Shershow]] ('''1981'''). ''The MyChess-CSC Confrontation at San Jose''. [[Personal Computing#5_1|Personal Computing, Vol. 5, No. 1]], pp. 79 » [[MCC 1980]], Interviews with [[David Kittinger]] and [[Myron Samole|Mike Samole]]
* [[John F. White]] ('''1981'''). ''[http://yourcomputeronline.wordpress.com/2010/12/10/survey-chess-games/ Survey-Chess Games]''. [[Your Computer]], [http://yourcomputeronline.wordpress.com/2010/10/31/augustseptember-1981-contents-and-editorial/ August/September 1981]
* [[John F. White]] ('''1982'''). ''[http://yourcomputeronline.wordpress.com/2011/01/08/review-morphy-v-champion/ Review-Morphy V Champion]''. [[Your Computer]], [http://yourcomputeronline.wordpress.com/2010/12/28/january-1982-contents-and-editorial/ January 1982]
* [[John F. White]] ('''1982'''). ''[http://yourcomputeronline.wordpress.com/2011/01/31/review-chess-computers/ Review-Chess Computers]''. [[Your Computer]], [http://yourcomputeronline.wordpress.com/2011/01/30/march-1982-contents-and-editorial/ March 1982]
==2000 ...==
* [[Rob van Son]] ('''2002'''). ''De schaakcomputer daagt u uit!''. [[Computerschaak]], [http://www.schaakcomputers.nl/hein_veldhuis/database/files/02-2002,%20Computerschaak,%20Rob%20van%20Son,%20De%20schaakcomputer%20daagt%20u%20uit!.pdf pdf] hosted by [[Hein Veldhuis]] (Dutch)
=Forum Posts=
==1998 ...==
* [https://www.stmintz.com/ccc/index.php?id=16606 Re: Old chess challenger 7 algorithms] by [[Fernando Villegas]], [[CCC]], April 06, 1998
* [https://www.stmintz.com/ccc/index.php?id=16609 Something More About Chess Challenger 7] by [[Fernando Villegas]], [[CCC]], April 06, 1998
* [https://www.stmintz.com/ccc/index.php?id=27279 Fidelity Sensory Chess Challenger 8] by Jim Phillips, [[CCC]], September 20, 1998
* [https://www.stmintz.com/ccc/index.php?id=40399 Fidelity Chess Challenger 7] by Joseph R. Coppola, [[CCC]], January 21, 1999
==2000 ...==
* [https://www.stmintz.com/ccc/index.php?id=98719 Instruction Book For Fidelity Chess Challenger] by John Burton, [[CCC]], February 22, 2000
* [https://www.stmintz.com/ccc/index.php?id=216706 What was Chess Challenger 7 thinking?] by Rich Van Gaasbeck, [[CCC]], March 06, 2002
* [https://www.stmintz.com/ccc/index.php?id=217071 I Think I have Chess Challenger 7 search depths correctly now] by Rich Van Gaasbeck, [[CCC]], March 08, 2002
* [https://www.stmintz.com/ccc/index.php?id=412919 Fidelity Sensory Chess Challenger 8] by Eric Guttenberg, [[CCC]], February 20, 2005
* [https://www.stmintz.com/ccc/index.php?id=491677 Chess Champion Sensory Challenger Asked] by [[Fernando Villegas]], [[CCC]], March 06, 2006
==2010 ...==
* [http://hiarcs.net/forums/viewtopic.php?t=6465&sid=2acb53dda459ea5439587250891f8bf6 Fidelity World Champion Challenger] by Larry, [[Computer Chess Forums|Hiarcs Forum]], December 03, 2013
* [http://www.hiarcs.net/forums/viewtopic.php?t=7178 Ron Nelsons dedicated chess computers] by [[Thorsten Czub|mclane]], [[Computer Chess Forums|Hiarcs Forum]], April 26, 2015
* [http://www.hiarcs.net/forums/viewtopic.php?t=6768&start=170 Re: Ron Nelson] by [[Ron Nelson|ChessChallenger]], [[Computer Chess Forums|Hiarcs Forum]], December 29, 2015
: [http://www.hiarcs.net/forums/viewtopic.php?t=6768&start=199 Re: Ron Nelson] by Chessmaster Ireland, [[Computer Chess Forums|Hiarcs Forum]], January 02, 2016
: [http://www.hiarcs.net/forums/viewtopic.php?t=6768&start=205 Re: Ron Nelson Chess Challenger 10] by [[Ron Nelson|ChessChallenger]], [[Computer Chess Forums|Hiarcs Forum]], January 24, 2016
* [http://www.talkchess.com/forum/viewtopic.php?t=58813&start=5 Re: Ron Nelson maybe will come here...] by [[Ron Nelson]], [[CCC]], February 03, 2016
* [http://www.hiarcs.net/forums/viewtopic.php?t=7653 Fidelity Chess Challenger 3 Components] by [[Ron Nelson|ChessChallenger]], [[Computer Chess Forums|Hiarcs Forum]], February 03, 2016
=External Links=
* [https://www.game-ai-forum.org/icga-tournaments/program.php?id=427 Challenger's ICGA Tournaments]
* [http://www.ismenio.com/fidelity.html Fidelity Electronics] from [http://www.ismenio.com/chess_computers.html chesscomputers.org]
* [http://www.spacious-mind.com/html/champion_sensory_challenger.html Fidelity Champion Sensory Challenger Electronic Chess Computer] from [[The Spacious Mind]]
* [http://adamsccpages.blogspot.de/2012/05/fidelity-chess-challenger-1.html Fidelity Chess Challenger 1] from [[Adam Hair|Adam's]] [http://adamsccpages.blogspot.de/ Computer Chess Pages], May 30, 2012
* [http://www.schach-computer.info/wiki/index.php/Fidelity Fidelity] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)
* [https://www.computerwoche.de/a/mikros-noch-ohne-grossmeister-format,1191318 Sargon immer noch Marktführer:: Mikros noch ohne Großmeister-Format], [[Computerworld#Woche|Computerwoche]], November 28, 1980 (German) » [[WCCC 1980]], [[WMCCC 1980]]
==Chess Challenger Voices==
hosted by [http://www.xs4all.nl/%7Etluif/ Tom Luif]
* [http://tluif.home.xs4all.nl/chescom/EngCCVVEn.html English]
* [http://tluif.home.xs4all.nl/chescom/EngCCVVFr.html French]
* [http://tluif.home.xs4all.nl/chescom/EngCCVVDu.html German]
==Editions==
{| class="wikitable"
|-
! Year
! Product Link(s) <ref>[http://www.schach-computer.info/wiki/index.php/Fidelity Fidelity] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref> <ref>[http://www.chesscomputeruk.com/index.html Chess Computer UK] by [[Mike Watters]]</ref>
! Author(s)
! Processor
! Tournaments
|-
! 1977
| [http://www.ismenio.com/chess_cc1.html Fidelity Chess Challenger 1]<br/>[http://www.chesscomputeruk.com/html/fidelity_chess_challenger__cc1.html Fidelity Chess Challenger (CC1)]<br/>[http://www.schach-computer.info/wiki/index.php/Fidelity_Chess_Challenger_1 Fidelity Chess Challenger 1]
| [[Ron Nelson]]
| [[8080]]
|
|-
!
| [http://www.schach-computer.info/wiki/index.php/Fidelity_Chess_Challenger_3 Fidelity Chess Challenger 3]<br/>[http://www.ismenio.com/chess_fidelity_cc3.html Chess Challenger 3], [http://www.ismenio.com/chess_cc1_vs_cc3.html CC1 vs CC3]
| [[Ron Nelson]]
| [[8080]], 2 MHz
|
|-
! 1978
| [http://www.schach-computer.info/wiki/index.php/Fidelity_Chess_Challenger_10 Fidelity Chess Challenger 10]
| [[Ron Nelson]]
| [[Z80]], 4 MHz
|
|-
! 1979
| [http://www.schach-computer.info/wiki/index.php/Fidelity_Chess_Challenger_7 Fidelity Chess Challenger 7]
| [[Ron Nelson]]
| [[Z80]]
|
|-
!
| [http://www.schach-computer.info/wiki/index.php/Fidelity_Chess_Challenger_Voice Fidelity Chess Challenger Voice]
| [[Ron Nelson]]
| [[Z80]], 4 MHz
|
|-
! 1980
| [http://www.schach-computer.info/wiki/index.php/Fidelity_CC_Sensory_Voice Fidelity Voice Sensory Chess Challenger]
| [[Ron Nelson]]
| [[Z80]], 4 MHz
|
|-
!
| [http://www.chesscomputeruk.com/html/fidelity_decorator_challenger.html Fidelity Decorator Challenger]
| [[Ron Nelson]]
| [[Z80]], 4 MHz
|
|-
! 1981
| [http://www.schach-computer.info/wiki/index.php/Fidelity_Chess_Challenger_Mini_Sensory Fidelity Chess Challenger Mini Sensory]
| [[Ron Nelson]]
| [http://www.schach-computer.info/wiki/index.php/80C50 80C50], 6 MHz
|
|-
!
| [http://www.schach-computer.info/wiki/index.php/Fidelity_CC_Champion Fidelity Champion Sensory Chess Challenger]
| [[Dan Spracklen|Dan]] and [[Kathe Spracklen]]
| [[6502]], 2 MHz
| [[WMCCC 1980]], 1st
|-
! 1982
| [http://www.schach-computer.info/wiki/index.php/Fidelity_Super_9 Fidelity Super 9 Sensory Chess Challenger]<br/>[http://www.chesscomputeruk.com/html/fidelity_super_9.html Fidelity Super 9]
| [[Dan Spracklen|Dan]] and [[Kathe Spracklen]]
| [[6502]], 2 MHz
|
|-
!
| [http://www.schach-computer.info/wiki/index.php/Fidelity_USCF_SE Fidelity USCF Special Edition]<br/>[http://www.chesscomputeruk.com/html/fidelity_uscf_special_edition.html Fidelity USCF Special Edition]
| [[Dan Spracklen|Dan]] and [[Kathe Spracklen]]
| [[6502]], 2.5 MHz
|
|-
! 1986
| Chess Challenger X
| [[Dan Spracklen|Dan]] and [[Kathe Spracklen]]<br/>[[Ron Nelson]], [[Danny Kopec]]
| [[Z80]], 16 x [[68000]]
| [[ACM 1986]], 7th
|-
! 1988
| Chess Challenger X
| [[Dan Spracklen|Dan]] and [[Kathe Spracklen]]<br/>[[Ron Nelson]]
| [[68030]]
| [[ACM 1988]], 2nd
|}
=References=
<references />
'''[[Engines|Up one level]]'''
[[FILE:4-2.Sensory_Chess_Challenger.Fidelity_Electronics.1982.102633899.lg.jpg|border|right|thumb|link=http://www.computerhistory.org/chess/full_record.php?iid=art-431614f446c99| Sensory Chess Challenger, 1982, [[6502]] <ref>[http://www.computerhistory.org/chess/full_record.php?iid=art-431614f446c99 Sensory Chess Challenger, 1982] from [[The Computer History Museum]]</ref> ]]
'''Chess Challenger''', or '''Fidelity Chess Challenger''',<br/>
was a series of [[Dedicated Chess Computers|dedicated chess computers]] produced and market by [[Fidelity Electronics]]. The ''Chess Challenger 1'' was the first commercial chess computer of its kind in [[Timeline#1976|1976]], invented by [[Sidney Samole]], with a program by [[Ron Nelson]], developed for an [https://en.wikipedia.org/wiki/Altair_8800 Altair 8800] Microcomputer with an [[Intel]] [[8080]] CPU. Further versions of Nelson's program run on a more advanced [[Z80]] CPU, great commercial success was the ''Chess Challenger 7'' <ref>[http://www.schach-computer.info/wiki/index.php/Fidelity_Chess_Challenger_7 Chess Challenger 7] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref> in 1979. [[Ed English]], an early game programmer affiliated with Fidelity Electronics in 1979/80, improved the [[Alpha-Beta|alpha-beta]] implementation to double the playing speed <ref>[http://www.linkedin.com/pub/ed-english/7/413/307 Ed English | LinkedIn]</ref>.
=Photos =
[[FILE:CC1Proto.JPG|none|border|text-bottom|640px|link=http://www.ismenio.com/fidelity.html]]
Chess Challenger Prototype, 1976, [[8080]] <ref>Chess Challenger Prototype from [http://www.uschesstrust.com/2009/11/01/world-chess-hall-of-fame-sidney-samole-museum-to-relocate-in-2010/ World Chess Hall of Fame and Sidney Samole Chess Museum], see [[Sidney Samole]] and [http://www.ismenio.com/fidelity.html Fidelity Electronics] from [http://www.ismenio.com/chess_computers.html chesscomputers.org]</ref> .
=Sargon becomes Challenger=
In 1980, when [[Dan Spracklen|Dan]] and [[Kathe Spracklen]] started to collaborate with Samole, a [[6502]] Version of Chess Challenger was built for a [[Sargon|Sargon III]] port. The 6502 was better suited for Sargon than [[Z80]]. Excerpt from their oral history how it went with Fidelity <ref>[http://www.computerhistory.org/trustee/gardner-hendrie Gardner Hendrie] ('''2005'''). ''Oral History of Kathe and Dan Spracklen''. [http://archive.computerhistory.org/projects/chess/related_materials/oral-history/spacklen.oral_history.2005.102630821/spracklen.oral_history_transcript.2005.102630821.pdf pdf] from [[The Computer History Museum]]</ref> :
So, that’s about the time we started looking at Fidelity again. We got in contact with Sid Samole, who was the President of the company, and he said, “Well, come out and see us and bring your- what you got out there and show it to us.” And so we got on a plane and flew out to Miami, and showed off our program to him. And they had their chief engineer, Ron Nelson, look at it, and they were impressed. And so they offered us a big contract, basically, to go to work for them, basically, fulltime. And we didn’t have to go to Miami. We could stay in San Diego.
They had the Chess Challenger 1, I think, out at the time, or 2, and they were looking for something better. Our program, that we brought with us, just shellacked their program. We had a little tournament there, in Miami, just a little, between us, on our- the one we brought with us. And they were impressed.
And we continued to sell both through, or Sargon, through Hayden. So Fidelity didn’t mind that. The said that’s cool. They didn’t see it as a competition with them.
==WMCCC 1980, MCC 1980==
The immediate success was the lucky win of the [[WMCCC 1980|1st World Microcomputer Chess Championship]], September 4 to 9, 1980, in London. Chess Challenger with a 6502 CPU, notably winning last three of five rounds against three of four other [[Sargon]] incarnations! While the [[ICGA]] tournament site states a Z80A CPU <ref>[https://www.game-ai-forum.org/icga-tournaments/tournament.php?id=13 1st World Microcomputer Chess Championship - ICGA Tournaments]</ref>, [[Kevin O’Connell]] reported the World Microcomputer Chess Champion was equipped with a [https://en.wikipedia.org/wiki/MOS_Technology MOS Technology] processor, despite newest Fidelity computers were shipped with Z80/Z80A <ref>[[Kevin O’Connell]] ('''1980'''). ''World Microcomputer Chess Championship''. [https://en.wikipedia.org/wiki/Personal_Computer_World Personal Computer World], [http://www.chesscomputeruk.com/html/publication_archive.html November 1980]</ref>. As further confirmed by Fidelity Electronics' Vice President [[Myron Samole]] in an [[Personal Computing#5_1|Personal Computing]] interview, the Champion Sensory Challenger, which also won the [[MCC 1980]] at September 5 to 7 in [https://en.wikipedia.org/wiki/San_Jose,_California San Jose, California] had a program written around the 6502 chip <ref> [[Harry Shershow]] ('''1981'''). ''The MyChess-CSC Confrontation at San Jose''. [[Personal Computing#5_1|Personal Computing, Vol. 5, No. 1]], pp. 79-81</ref>.
[[FILE:ChessChallengerBroschure.jpg|none|border|text-bottom|link=http://www.flickr.com/photos/10261668@N05/859069920/sizes/l/in/photostream/]]
German Chess Challenger brochure with [https://en.wikipedia.org/wiki/Heinz_Haber Prof. Heinz Haber] endorsement <ref>[http://www.flickr.com/photos/10261668@N05/859069920/in/photostream Grand Master Voice 1980 Brochure | Flickr - Fotosharing] by [[Steve Blincoe|Chewbanta]]</ref> <br/>
''Chess Challenger Sensory Voice'' <ref>[http://www.schach-computer.info/wiki/index.php/Fidelity_Chess_Challenger_Voice Fidelity Chess Challenger Voice] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref>, a [[Z80]] based Nelson Program as Micro Champ? <ref>[http://www.schach-computer.info/wiki/index.php/Fidelity_CC_Sensory_Voice Fidelity CC Sencory Voice] was a [[Z80]] based Nelson program, and not the [[6502]] based Spracklen program which won the [[WMCCC 1980]]</ref>
|
==WCCC 1980==
The ''Chess Challenger'' which played the [[WCCC 1980]] end of September in Linz and finished last was presumably an older Z80 based computer with a Nelson program <ref>[https://www.computerwoche.de/a/mikros-noch-ohne-grossmeister-format,1191318 Sargon immer noch Marktführer:: Mikros noch ohne Großmeister-Format], [[Computerworld#Woche|Computerwoche]], November 28, 1980 (German)</ref>. Fidelity's flagship end of the 70s, with World Champion 1980 advertisement was the ''Chess Challenger Sensory Voice''. The first 6502 based computer with a Spracklen program commercially available appeared in 1981 as ''Champion Sensory Chess Challenger'' <ref>[http://www.schach-computer.info/wiki/index.php/Fidelity_CC_Champion Fidelity CC Champion] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref> .
==ACM 1980==
The strong third place at the [[ACM 1980]] in October was again a great success, only losing to [[Belle]] in the last round <ref>[http://www.computerwoche.de/heftarchiv/1981/4/1185023/ "Belle" wurde auch US-Champion 1980: Frecher Schachzwerg beweist Kaltblütigkeit], January 23, 1981, [[Computerworld#Woche|Computerwoche]] 3/1981 (German)</ref>. Description given from the ACM booklet with mentioned authors Dan and Kathe Spracklen, Ronald Nelson, [[Frank Duason]] <ref>[http://www.computerhistory.org/chess/full_record.php?iid=doc-431614f6cdeeb The Eleventh ACM's North American Computer Chess Championship], [http://archive.computerhistory.org/projects/chess/related_materials/text/3-1%20and%203-2%20and%203-3.1980_11th_ACM_NACCC/The_Eleventh_ACMs_North_American_Computer_Chess_Championship.1980.062303015.sm.pdf pdf] from [[The Computer History Museum]]</ref>
This marks the first appearance in an ACM tournament for this popular machine. Chess Challenger is written in assembly language for a 6502 microprocessor. It has 20k bytes of memory and executes about 1,000,000 inst/sec. A book of about 1,000 moves is used. The program uses the [[Alpha-Beta|alpha-beta]] algorithm with [[Iterative Deepening|iterative deepening]].
=Name Confusion=
Using the same name at almost the same time for programs with different authors and CPU architectures caused some confusion by potential customers, not to mention tournament organizers. Accordant to their product lineup and nomination, and caused by former tournament rules, permitting multiple, but different named entries from the same author, and commercial availability of participating computers, Fidelity Electronics somehow was "forced" to continue the naming obfuscation in further tournaments, where Fidelity computers with Spracklen programs participated as [[Fidelity|Fidelity X]], Challenger-X, [[Elegance]], [[Elite]], [[Private Line]], and [[Sensory 9|Sensory]].
<span id="ChallengerX"></span>
=Chess Challenger X=
==ACM 1986==
In 1986, at the [[ACM 1986|17th ACM North American Computer Chess Championship]], Fidelity showed up with a huge experimental, parallel machine, named ''Chess Challenger X''. Authors were [[Ron Nelson]], [[Dan Spracklen]], [[Kathe Spracklen]], and [[Danny Kopec]] as [[Opening Book Authors|Book author]]. It had a [[Z80]] controller, and 16 or more [[68000]] 16-bit processors. The controller was written in [[C]], the 16 or more Spracklen programs in [[Assembly|assembler]] <ref>[http://www.computerhistory.org/chess/full_record.php?iid=doc-431614f6ca4a7 The ACM's Seventeenth North American Computer Chess Championship and The Sixth World Microcomputer Chess Championship] from [[The Computer History Museum]], [http://archive.computerhistory.org/projects/chess/related_materials/text/3-1%20and%203-2%20and%203-3%20and%204-3.1986_17th_NACCC/1986%20NACCC.062303062.sm.pdf pdf]</ref>.
Chess Challenger X scored 50%, losing from [[Rebel|Recom]] and [[Belle]]. Notably, in the same tournament, another Fidelity computer programmed by the Spracklens with a Kopec book took part, as [[Fidelity|Fidelity Experimental]] with a [[68020]] processor. It did not score better in that strong field and finally placed 10th.
==ACM 1988==
At the [[ACM 1988]], the new experimental version of a [[68030]] based micro called ''Chess Challenger X'' showed a remarkable performance. Mentioned authors from the tournament report by [[Monroe Newborn|Monty Newborn]] and [[Danny Kopec]] <ref>[[Monroe Newborn|Monty Newborn]] and [[Danny Kopec]] ('''1989'''). ''Results of The Nineteenth ACM North American Computer Chess Championship'', in [http://www.computerhistory.org/chess/full_record.php?iid=doc-431614f6cb3a1 The Twentieth ACM North American Computer Chess Championship] from [[The Computer History Museum]], [http://archive.computerhistory.org/projects/chess/related_materials/text/3-1%20and%203-2%20and%203-3%20and%204-3.1989_20th_NACCC/1989%20NACCC.062303064.sm.pdf pdf]</ref> were [[Dan Spracklen|Dan]] and [[Kathe Spracklen]] as well as [[Ron Nelson]]. The 32-bit program, written in 68030 [[Assembly|assembly]] language, drew [[Deep Thought]] and won versus [[Waycool]], the current World Champion [[Cray Blitz]], and [[HiTech]]. Chess Challenger X was likely the forerunner of the commercial available ''Fidelity Elite Avant Garde V9'' <ref>[http://www.schach-computer.info/wiki/index.php/Fidelity_Elite_V9 Fidelity Elite Avant Garde V9] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref> . One year later, at the [[WCCC 1989]] in Edmonton, a similar machine, presumably with a further developed program, played under the name [[Fidelity|Fidelity X]] and finished sixth.
=CC Clones=
* [[Cassia Chess Mate]]
* [[SC 1]]
* [[SC 2]]
=See also=
* [[Fidelity]]
* [[Fidelity Electronics]]
* [[Ron Nelson]]
* [[Sidney Samole]]
* [[Dan Spracklen]]
* [[Kathe Spracklen]]
* [[Fidelity Electronics#SpracklensAppleICE|Spracklens with Apple II ICE]]
=Publications=
==1978 ...==
* Editor ('''1978'''). ''Black-box war''. [[Personal Computing#2_11|Personal Computing, Vol. 2, No. 11]], pp. 17, November 1978 » [[Boris]]
* Don Gerue, Russ McNeil ('''1979'''). ''Chess Challenger-10 wins Microchess Tourney''. [[Personal Computing#3_1|Personal Computing, Vol. 3, No. 2]], pp. 63 » [[The Penrod Memorial Microchess Tournament]]
* John Larkins ('''1979'''). ''Inside Chess Challenger''. [[Personal Computing#3_11|Personal Computing, Vol. 3, No. 11]], pp. 78
* Editor ('''1979'''). ''Misadvantages of a Chess Traveler''. [[Personal Computing#3_12|Personal Computing, Vol. 3, No. 12]], pp. 75
==1980 ...==
* [[Sidney Samole]] ('''1980'''). ''[http://books.google.com/books?id=aQYEAAAAMBAJ&pg=PA69&lpg=PA69&dq=Penrod+Memorial+Computer+Chess+Tournament&source=bl&ots=vot1MjdYMk&sig=C642qqnzAXoay6eiwRF5zxSXd80&hl=en&sa=X&ei=VJOwUKbaFo6RswaR-oDgBQ&redir_esc=y#v=onepage&q&f=false Genius Offspring]''. [https://en.wikipedia.org/wiki/Kiplinger%27s_Personal_Finance Changing Times], refers [[Personal Computing#3_2|Personal Computing, February 1979]]
* [[Evan Katz]] ('''1980'''). ''Chess Challenger's Voice comes out of Both Sides of its Mouth''. [[Personal Computing#4_5|Personal Computing, Vol. 4, No. 5]], pp. 80
* [[Harry Shershow]] ('''1981'''). ''The MyChess-CSC Confrontation at San Jose''. [[Personal Computing#5_1|Personal Computing, Vol. 5, No. 1]], pp. 79 » [[MCC 1980]], Interviews with [[David Kittinger]] and [[Myron Samole|Mike Samole]]
* [[John F. White]] ('''1981'''). ''[http://yourcomputeronline.wordpress.com/2010/12/10/survey-chess-games/ Survey-Chess Games]''. [[Your Computer]], [http://yourcomputeronline.wordpress.com/2010/10/31/augustseptember-1981-contents-and-editorial/ August/September 1981]
* [[John F. White]] ('''1982'''). ''[http://yourcomputeronline.wordpress.com/2011/01/08/review-morphy-v-champion/ Review-Morphy V Champion]''. [[Your Computer]], [http://yourcomputeronline.wordpress.com/2010/12/28/january-1982-contents-and-editorial/ January 1982]
* [[John F. White]] ('''1982'''). ''[http://yourcomputeronline.wordpress.com/2011/01/31/review-chess-computers/ Review-Chess Computers]''. [[Your Computer]], [http://yourcomputeronline.wordpress.com/2011/01/30/march-1982-contents-and-editorial/ March 1982]
==2000 ...==
* [[Rob van Son]] ('''2002'''). ''De schaakcomputer daagt u uit!''. [[Computerschaak]], [http://www.schaakcomputers.nl/hein_veldhuis/database/files/02-2002,%20Computerschaak,%20Rob%20van%20Son,%20De%20schaakcomputer%20daagt%20u%20uit!.pdf pdf] hosted by [[Hein Veldhuis]] (Dutch)
=Forum Posts=
==1998 ...==
* [https://www.stmintz.com/ccc/index.php?id=16606 Re: Old chess challenger 7 algorithms] by [[Fernando Villegas]], [[CCC]], April 06, 1998
* [https://www.stmintz.com/ccc/index.php?id=16609 Something More About Chess Challenger 7] by [[Fernando Villegas]], [[CCC]], April 06, 1998
* [https://www.stmintz.com/ccc/index.php?id=27279 Fidelity Sensory Chess Challenger 8] by Jim Phillips, [[CCC]], September 20, 1998
* [https://www.stmintz.com/ccc/index.php?id=40399 Fidelity Chess Challenger 7] by Joseph R. Coppola, [[CCC]], January 21, 1999
==2000 ...==
* [https://www.stmintz.com/ccc/index.php?id=98719 Instruction Book For Fidelity Chess Challenger] by John Burton, [[CCC]], February 22, 2000
* [https://www.stmintz.com/ccc/index.php?id=216706 What was Chess Challenger 7 thinking?] by Rich Van Gaasbeck, [[CCC]], March 06, 2002
* [https://www.stmintz.com/ccc/index.php?id=217071 I Think I have Chess Challenger 7 search depths correctly now] by Rich Van Gaasbeck, [[CCC]], March 08, 2002
* [https://www.stmintz.com/ccc/index.php?id=412919 Fidelity Sensory Chess Challenger 8] by Eric Guttenberg, [[CCC]], February 20, 2005
* [https://www.stmintz.com/ccc/index.php?id=491677 Chess Champion Sensory Challenger Asked] by [[Fernando Villegas]], [[CCC]], March 06, 2006
==2010 ...==
* [http://hiarcs.net/forums/viewtopic.php?t=6465&sid=2acb53dda459ea5439587250891f8bf6 Fidelity World Champion Challenger] by Larry, [[Computer Chess Forums|Hiarcs Forum]], December 03, 2013
* [http://www.hiarcs.net/forums/viewtopic.php?t=7178 Ron Nelsons dedicated chess computers] by [[Thorsten Czub|mclane]], [[Computer Chess Forums|Hiarcs Forum]], April 26, 2015
* [http://www.hiarcs.net/forums/viewtopic.php?t=6768&start=170 Re: Ron Nelson] by [[Ron Nelson|ChessChallenger]], [[Computer Chess Forums|Hiarcs Forum]], December 29, 2015
: [http://www.hiarcs.net/forums/viewtopic.php?t=6768&start=199 Re: Ron Nelson] by Chessmaster Ireland, [[Computer Chess Forums|Hiarcs Forum]], January 02, 2016
: [http://www.hiarcs.net/forums/viewtopic.php?t=6768&start=205 Re: Ron Nelson Chess Challenger 10] by [[Ron Nelson|ChessChallenger]], [[Computer Chess Forums|Hiarcs Forum]], January 24, 2016
* [http://www.talkchess.com/forum/viewtopic.php?t=58813&start=5 Re: Ron Nelson maybe will come here...] by [[Ron Nelson]], [[CCC]], February 03, 2016
* [http://www.hiarcs.net/forums/viewtopic.php?t=7653 Fidelity Chess Challenger 3 Components] by [[Ron Nelson|ChessChallenger]], [[Computer Chess Forums|Hiarcs Forum]], February 03, 2016
=External Links=
* [https://www.game-ai-forum.org/icga-tournaments/program.php?id=427 Challenger's ICGA Tournaments]
* [http://www.ismenio.com/fidelity.html Fidelity Electronics] from [http://www.ismenio.com/chess_computers.html chesscomputers.org]
* [http://www.spacious-mind.com/html/champion_sensory_challenger.html Fidelity Champion Sensory Challenger Electronic Chess Computer] from [[The Spacious Mind]]
* [http://adamsccpages.blogspot.de/2012/05/fidelity-chess-challenger-1.html Fidelity Chess Challenger 1] from [[Adam Hair|Adam's]] [http://adamsccpages.blogspot.de/ Computer Chess Pages], May 30, 2012
* [http://www.schach-computer.info/wiki/index.php/Fidelity Fidelity] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)
* [https://www.computerwoche.de/a/mikros-noch-ohne-grossmeister-format,1191318 Sargon immer noch Marktführer:: Mikros noch ohne Großmeister-Format], [[Computerworld#Woche|Computerwoche]], November 28, 1980 (German) » [[WCCC 1980]], [[WMCCC 1980]]
==Chess Challenger Voices==
hosted by [http://www.xs4all.nl/%7Etluif/ Tom Luif]
* [http://tluif.home.xs4all.nl/chescom/EngCCVVEn.html English]
* [http://tluif.home.xs4all.nl/chescom/EngCCVVFr.html French]
* [http://tluif.home.xs4all.nl/chescom/EngCCVVDu.html German]
==Editions==
{| class="wikitable"
|-
! Year
! Product Link(s) <ref>[http://www.schach-computer.info/wiki/index.php/Fidelity Fidelity] from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info Wiki] (German)</ref> <ref>[http://www.chesscomputeruk.com/index.html Chess Computer UK] by [[Mike Watters]]</ref>
! Author(s)
! Processor
! Tournaments
|-
! 1977
| [http://www.ismenio.com/chess_cc1.html Fidelity Chess Challenger 1]<br/>[http://www.chesscomputeruk.com/html/fidelity_chess_challenger__cc1.html Fidelity Chess Challenger (CC1)]<br/>[http://www.schach-computer.info/wiki/index.php/Fidelity_Chess_Challenger_1 Fidelity Chess Challenger 1]
| [[Ron Nelson]]
| [[8080]]
|
|-
!
| [http://www.schach-computer.info/wiki/index.php/Fidelity_Chess_Challenger_3 Fidelity Chess Challenger 3]<br/>[http://www.ismenio.com/chess_fidelity_cc3.html Chess Challenger 3], [http://www.ismenio.com/chess_cc1_vs_cc3.html CC1 vs CC3]
| [[Ron Nelson]]
| [[8080]], 2 MHz
|
|-
! 1978
| [http://www.schach-computer.info/wiki/index.php/Fidelity_Chess_Challenger_10 Fidelity Chess Challenger 10]
| [[Ron Nelson]]
| [[Z80]], 4 MHz
|
|-
! 1979
| [http://www.schach-computer.info/wiki/index.php/Fidelity_Chess_Challenger_7 Fidelity Chess Challenger 7]
| [[Ron Nelson]]
| [[Z80]]
|
|-
!
| [http://www.schach-computer.info/wiki/index.php/Fidelity_Chess_Challenger_Voice Fidelity Chess Challenger Voice]
| [[Ron Nelson]]
| [[Z80]], 4 MHz
|
|-
! 1980
| [http://www.schach-computer.info/wiki/index.php/Fidelity_CC_Sensory_Voice Fidelity Voice Sensory Chess Challenger]
| [[Ron Nelson]]
| [[Z80]], 4 MHz
|
|-
!
| [http://www.chesscomputeruk.com/html/fidelity_decorator_challenger.html Fidelity Decorator Challenger]
| [[Ron Nelson]]
| [[Z80]], 4 MHz
|
|-
! 1981
| [http://www.schach-computer.info/wiki/index.php/Fidelity_Chess_Challenger_Mini_Sensory Fidelity Chess Challenger Mini Sensory]
| [[Ron Nelson]]
| [http://www.schach-computer.info/wiki/index.php/80C50 80C50], 6 MHz
|
|-
!
| [http://www.schach-computer.info/wiki/index.php/Fidelity_CC_Champion Fidelity Champion Sensory Chess Challenger]
| [[Dan Spracklen|Dan]] and [[Kathe Spracklen]]
| [[6502]], 2 MHz
| [[WMCCC 1980]], 1st
|-
! 1982
| [http://www.schach-computer.info/wiki/index.php/Fidelity_Super_9 Fidelity Super 9 Sensory Chess Challenger]<br/>[http://www.chesscomputeruk.com/html/fidelity_super_9.html Fidelity Super 9]
| [[Dan Spracklen|Dan]] and [[Kathe Spracklen]]
| [[6502]], 2 MHz
|
|-
!
| [http://www.schach-computer.info/wiki/index.php/Fidelity_USCF_SE Fidelity USCF Special Edition]<br/>[http://www.chesscomputeruk.com/html/fidelity_uscf_special_edition.html Fidelity USCF Special Edition]
| [[Dan Spracklen|Dan]] and [[Kathe Spracklen]]
| [[6502]], 2.5 MHz
|
|-
! 1986
| Chess Challenger X
| [[Dan Spracklen|Dan]] and [[Kathe Spracklen]]<br/>[[Ron Nelson]], [[Danny Kopec]]
| [[Z80]], 16 x [[68000]]
| [[ACM 1986]], 7th
|-
! 1988
| Chess Challenger X
| [[Dan Spracklen|Dan]] and [[Kathe Spracklen]]<br/>[[Ron Nelson]]
| [[68030]]
| [[ACM 1988]], 2nd
|}
=References=
<references />
'''[[Engines|Up one level]]'''
