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Ed Schroder

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'''Ed Schröder''', (Ed Schroder)<br/>
a Dutch computer chess programmer and founder of '''Schröder BV''' <ref>[http://www.rebel.nl/ Schröder BV]</ref>, a chess software developing company. Ed is author of various chess programs for PCs as well for [[Dedicated Chess Computers|dedicated chess computers]]. His most famous chess programs were the commercial programs [[Rebel]] <ref>[http://members.home.nl/matador/chess.htm Computer Chess - Rebel]</ref>, and based on Rebel the [[WMCCC 1991]] Micro Champion [[Gideon]] <ref>[https://www.game-ai-forum.org/icga-tournaments/program.php?id=222 Mephisto Gideon's ICGA Tournaments]</ref>, the World Computer Chess Champion from the [[WCCC 1992]], [[ChessMachine]] <ref>[http://members.home.nl/matador/chess_2.htm World Champion (1991-1995)]</ref>, and the free program [[Pro DeoProDeo]] <ref>[http://members.home.nl/matador/prodeo.htm Pro Deo (version 1.2)]</ref> <ref>[http://www.talkchess.com/forum/viewtopic.php?t=40978 ProDeo 1.7 official now] by [[Ed Schroder|Ed Schröder]], [[CCC]], November 02, 2011</ref> <ref>[http://www.top-5000.nl/prodeo17.htm Pro Deo 1.7]</ref>. Ed contributed a lot to computer chess, since he made almost all his knowledge about chess programming [[Recommended Reading|public]], when he retired from competition in 2003 <ref>Quote from Ed from his former ''Programmer Stuff'' site, now summarized in [http[Ed Schroder|Ed Schröder]] ('''2004'''). ''How Rebel Plays Chess''. [https://www.top-5000silo.nltips/authorsdownload/how-rebel/chess840.htm Programmer Stuff-plays-chess-1 pdf] site:<br/>
On this page I will try to explain some of the secrets of REBEL, I have retired from the competition so I see no need any longer to hide my ideas on computer chess. It's my hope that some of my fellow programmers find something useful on this page and that it might contribute to increase the elo rating of their chess engine.</ref>. In 2002 [[Lokasoft]] took over the activities of '''Schröder BV''' <ref>[http://www.rebel.nl/lokasoft.htm Company Information], by Ed Schröder and [[Lex Loep]], September 1, 2002</ref>.
=2011 Rybka Controversy=
In 2011, Ed Schröder first signed the [[Open letter to the ICGA about the Rybka-Fruit issue|open letter]] directed to the [[ICGA]], to support the claim [[Rybka |Rybka 1.0 beta]] and subsequent versions were allegedly derivatives from [[Fabien Letouzey|Fabien Letouzey’s]] program [[Fruit|Fruit 2.1]], but soon after the [[Rybka Controversy#RybkaDecision|ICGA decision]], reconsidered <ref>[http://www.open-chess.org/viewtopic.php?f=3&t=1471 Progess (often) is ugly, a summary try] by [[Ed Schroder|Rebel]], [[Computer Chess Forums|OpenChess Forum]], July 03, 2011</ref> <ref>[http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?tid=22421 In retrospect] by [[Ed Schroder|Rebel]], [[Computer Chess Forums|Rybka Forum]], July 14, 2011</ref>, apologized to [[Vasik Rajlich]] <ref>[http://rybkaforum.net/cgi-bin/rybkaforum/topic_show.pl?tid=22679 Apology to Vas] by [[Ed Schroder|Rebel]], [[Computer Chess Forums|Rybka Forum]], August 17, 2011</ref> and criticized the [[ICGA Investigations|investigation process]] and the represented evidence. In November 2011, Ed Schröder announced his new web-sites <ref>[http://www.top-5000.nl/Rybka.htm ''Rybka vs ICGA a different view] '' by [[Ed Schroder|Ed Schröder]], November 2011</ref> <ref>[http://www.top-5000.nl/evidence.htm ''Rybka evidence] '' by [[Ed Schroder|Ed Schröder]], November 2011</ref> that give an alternative view of the historic ICGA - RYBKA event that led to the ban of Rybka.
=Programs and Computers=
* [[Mephisto Rebell]]
* [[Mephisto RISC]]
* [[Pro DeoProDeo]]
* [[Rebel]]
=Selected Publications=
* [[Jeroen Noomen]], [[Ed Schroder|Ed Schröder]] ('''1998'''). ''Anand versus Rebel 10 exp.'' [[ICGA Journal#21_3|ICCA Journal, Vol. 21, No. 3]]
* [[Ed Schroder|Ed Schröder]] ('''20122004'''). ''Rybka reloadedHow Rebel Plays Chess''. [httphttps://wwwsilo.top-5000.nl/Rybka%20Reloaded.pdf pdf]* [[Ed Schroder|Ed Schröder]] ('''2015'''). ''The myth Rajlich copied Fruit''. [http:tips/download/www.top-5000.nl/Thehow-mythrebel-Rajlichplays-copiedchess-Fruit.pdf 1 pdf]
=Forum Posts=
==2000 ...==
* [https://www.stmintz.com/ccc/index.php?id=129504 Faster, deeper and more of such...] by [[Ed Schroder|Ed Schröder]], [[CCC]], September 14, 2000 » [[Depth#DiminishingReturns|Diminishing Returns]], [[Search Statistics]]
* [https://www.stmintz.com/ccc/index.php?id=143151 Marcus Kastner versus Millennium (again)] by [[Ed Schroder|Ed Schröder]], [[CCC]], December 06, 2000 » [[Marcus Kästner]], [[MILLENNIUM Millennium 2000 GmbH]]
* [https://www.stmintz.com/ccc/index.php?id=182383 Maastricht] by [[Ed Schroder|Ed Schröder]], [[CCC]], August 03, 2001 » [[WMCCC 2001]]
* [https://www.stmintz.com/ccc/index.php?id=240056 The law of diminishing returns] by [[Ed Schroder|Ed Schröder]], [[CCC]], July 12, 2002 » [[Depth#DiminishingReturns|Diminishing Returns]]
* [http://www.talkchess.com/forum/viewtopic.php?t=65047 adaptive lazy eval] by [[Ed Schroder]], [[CCC]], August 31, 2017 » [[Lazy Evaluation]]
* [http://www.talkchess.com/forum/viewtopic.php?t=65741 Blog] by [[Ed Schroder]], [[CCC]], November 16, 2017
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=67831 Introducing PET] by [[Ed Schroder|Ed Schröder]], [[CCC]], June 27, 2018 » [[Automated Tuning]], [[Strategic Test Suite]]* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=71892 Similarity Report 2019] by [[Ed Schroder|Ed Schröder]], [[CCC]], September 23, 2019 » [[Engine Similarity]]==2020 ...==* [https://prodeo.actieforum.com/t104-the-nnue-split-programmers-are-in The NNUE split programmers are in] by [[Ed Schroder|Ed Schröder]], [[Computer Chess Forums|ProDeo Forum]], December 02, 2020 » [[NNUE]]* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=76833 NNUE Research Project] by [[Ed Schroder|Ed Schröder]], [[CCC]], March 10, 2021* [http://www.talkchess.com/forum3/viewtopic.php?f=7&t=77715 Just an untested idea] by [[Ed Schroder|Ed Schröder]], [[CCC]], July 12, 2021 » [[Automated Tuning]], [[Piece-Square Tables]]* [https://www.talkchess.com/forum3/viewtopic.php?f=2&t=79107 Rebel 14] by [[Ed Schroder|Ed Schröder]], [[CCC]], January 12, 2022 » [[Rebel#14|Rebel 14]]
=External Links=
* [http://rebel13.nl/rebel13/rebel%2013.html Welcome to the Home of the Dutch Rebel]
: [http://rebel13.nl/index.html Rebel Pure Nostalgica]
: [http://rebel13.nl/prodeo/ideas.html ideas] <ref>[http://www.talkchess.com/forum/viewtopic.php?t=61366 Ideas] by [[Ed Schroder|Ed Schröder]], [[CCC]], September 08, 2016</ref> » [[Pro DeoProDeo]]
: [http://rebel13.nl/rebel13/ideas.html Programmer corner] <ref>[http://www.talkchess.com/forum/viewtopic.php?t=65741 Blog] by [[Ed Schroder]], [[CCC]], November 16, 2017</ref>
* [httphttps://wwwprodeo.top-5000actieforum.nl/authors/rebel/chess840.htm Programmer Corner] (old) <ref>How Rebel Plays Chess as [http://members.home.nl/matadorcom/Inside%20Rebel.pdf pdf reprint]</ref> : [http://www.top-5000.nl/video.html Historic video'sProDeo Forum] hosted and moderated by [[Ed Schroder|Ed Schröder]] <ref>[http://www.talkchess.com/forum/viewtopic.php?t=47530 A couple of new historic video's] by [[Ed Schroder|Ed Schröder]], [[CCC]], Mar 17, 2013</ref>, [[WMCCC 1985]], [[WCCC 1986]], [[Aegon 1997]], [[WCCC 1999]], » [[Eric HallsworthProDeo]]: [http://www.top-5000.nl/evidence.htm Rybka evidence] by [[Ed Schroder|Ed Schröder]], November 09, 2011: [http://www.top-5000.nl/dedicated.htm Dedicated chess computers - Home of the Dutch Rebel]
* [https://www.game-ai-forum.org/icga-tournaments/person.php?id=59 Ed Schröder's ICGA Tournaments]
* [http://www.schach-computer.info/wiki/index.php/Schr%C3%B6der,_Ed Schröder, Ed] (German) from [http://www.schach-computer.info/wiki/index.php/Hauptseite_En Schachcomputer.info - Wiki]
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[[Category:Chess Programmer|Schrüder]]

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