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* [[Excalibur Grandmaster]]
* [[Excalibur Igor]]
* [[Excalibur King Arthur]]
* [[Excalibur LCD Chess]]
* [[Excalibur Mirage]]
* [[Excalibur Phantom Force]]
* [[Ivan The Terrible]]
* [[Ivan II The Conqueror]]
=Forum Posts=
==2008 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=24784 On Female Chess Computers] by [[Steve Blincoe]], [[CCC]], November 08, 2008
* [http://www.talkchess.com/forum/viewtopic.php?t=24890 New Excalibur Einstein Chess Computers] by [[Bryan Whitby]], [[CCC]], November 15, 2008
* [http://www.talkchess.com/forum/viewtopic.php?t=29341 Avenger by Excalibur...a Shame] by [[Fernando Villegas]], [[CCC]], August 11, 2009
* [http://www.talkchess.com/forum/viewtopic.php?t=29678 Breaking News:The Real Strenght of Grandmaster by Excalibur] by [[Fernando Villegas]], [[CCC]], September 06, 2009 » [[Excalibur Grandmaster]]
* [http://www.hiarcs.net/forums/viewtopic.php?t=2818 Excalibur Alive or Dead?] by [[Bryan Whitby]], [[Computer Chess Forums|Hiarcs Forum]], December 05, 2009
==2010 ...==
* [http://www.talkchess.com/forum/viewtopic.php?t=40226 Excalibur Avenger] by [[Fernando Villegas]], [[CCC]], August 30, 2011
* [http://www.talkchess.com/forum/viewtopic.php?t=45418 Karpov by Excalibur Precious Machine] by [[Fernando Villegas]], [[CCC]], October 01, 2012
* [http://www.hiarcs.net/forums/viewtopic.php?t=6768 Ron Nelson Ever Copied, Used , Cloned the Spracklen?] by [[Fernando Villegas]], [[Computer Chess Forums|Hiarcs Forum]], July 05, 2014
: [http://www.hiarcs.net/forums/viewtopic.php?t=6768&start=68 Re: Ron Nelson Ever Copied, Used , Cloned the Spracklen?] by [[Ron Nelson|ChessChallenger]], [[Computer Chess Forums|Hiarcs Forum]], December 21, 2015
: [http://www.hiarcs.net/forums/viewtopic.php?t=6768&start=78 Excalibur Electronics] by [[Ron Nelson|ChessChallenger]], [[Computer Chess Forums|Hiarcs Forum]], December 22, 2015» [[ACM 1981]], [[Belle|Belle's]] [[Attack and Defend Maps|Attack Maps]]
: [http://www.hiarcs.net/forums/viewtopic.php?t=6768&start=82 Excalibur Electronics] by [[Ron Nelson|ChessChallenger]], [[Computer Chess Forums|Hiarcs Forum]], December 22, 2015
: [http://www.hiarcs.net/forums/viewtopic.php?t=6768&start=90 Re: Excalibur Electronics] by [[Mike Watters]], [[Computer Chess Forums|Hiarcs Forum]], December 23, 2015
: [http://www.hiarcs.net/forums/viewtopic.php?t=6768&start=122 Re: Ron Nelson] by [[Ron Nelson|ChessChallenger]], [[Computer Chess Forums|Hiarcs Forum]], December 24, 2015 » [[Excalibur Mirage]], [[Eric White]]
* [http://www.hiarcs.net/forums/viewtopic.php?t=7591 Excalibur Chess Products Ron Nelson designed/programmed] by [[Ron Nelson|ChessChallenger]], [[Computer Chess Forums|Hiarcs Forum]], January 05, 2016
* [http://www.hiarcs.net/forums/viewtopic.php?t=8315 Excalibur Collection] by [[The Spacious Mind]], [[Computer Chess Forums|Hiarcs Forum]], March 13, 2017
=External Links=
