Ed Schroder

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Ed Schröder, (Ed Schroder) a Dutch computer chess programmer and founder of Schröder BV, a chess software developing company. Ed is author of various chess programs for PCs as well for dedicated chess computers. His most famous chess programs were the commercial programs Rebel, and based on Rebel the WMCCC 1991 Micro Champion Gideon , the World Computer Chess Champion from the WCCC 1992, ChessMachine , and the free program ProDeo. Ed contributed a lot to computer chess, since he made almost all his knowledge about chess programming public, when he retired from competition in 2003. In 2002 Lokasoft took over the activities of Schröder BV.

=2011 Rybka Controversy= In 2011, Ed Schröder first signed the open letter directed to the ICGA, to support the claim Rybka 1.0 beta and subsequent versions were allegedly derivatives from Fabien Letouzey’s program Fruit 2.1, but soon after the ICGA decision, reconsidered, apologized to Vasik Rajlich and criticized the investigation process and the represented evidence. In November 2011, Ed Schröder announced his new web-sites that give an alternative view of the historic ICGA - RYBKA event that led to the ban of Rybka.

=Programs and Computers=
 * ChessMachine
 * Gideon
 * Mephisto MM IV
 * Mephisto MM V
 * Mephisto Polgar
 * Mephisto Rebell
 * Mephisto RISC
 * ProDeo
 * Rebel

=Selected Publications=
 * Jeroen Noomen, Ed Schröder (1998). Anand versus Rebel 10 exp. ICCA Journal, Vol. 21, No. 3
 * Ed Schröder (2004). How Rebel Plays Chess. pdf

=Forum Posts=

1993 ...

 * Interview with world champ chess programmer (long) by Kees de Graaf, rgc, February 05, 1993

1995 ...

 * REBEL 7 announcement by Ed Schröder, rgc, July 27, 1995
 * Open letter to ChessBase by Ed Schröder, rgcc, January 09, 1997
 * CCC-I test set by Ed Schröder, CCC, October 04, 1997 » Test-Positions
 * CCC-II test set by Ed Schröder, CCC, October 04, 1997
 * CCC-III (positional test) by Ed Schröder, CCC, October 06, 1997
 * Hash tables and data-cache, some programmer stuff... by Ed Schröder, CCC, January 17, 1998 » Hash Table, Transposition Table
 * My views on the Match by Ed Schröder, CCC, July 27, 1998
 * Ed's real life by Jean-Christophe Weill, rgcc, August 15, 1998
 * How to create a set of random integers for hashing? by Ed Schröder, CCC, October 18, 1998 » Zobrist Hashing
 * AUTO232 and memory protection by Ed Schröder, CCC, February 03, 1999 » Auto232
 * PB-ON vs PB-OFF (results experiment-1) by Ed Schröder, CCC, October 10, 1999 » Pondering
 * PB-ON vs PB-OFF (final results) by Ed Schröder, CCC, October 15, 1999

2000 ...

 * Faster, deeper and more of such... by Ed Schröder, CCC, September 14, 2000 » Diminishing Returns, Search Statistics
 * Marcus Kastner versus Millennium (again) by Ed Schröder, CCC, December 06, 2000 » Marcus Kästner, MILLENNIUM 2000 GmbH
 * Maastricht by Ed Schröder, CCC, August 03, 2001 » WMCCC 2001
 * The law of diminishing returns by Ed Schröder, CCC, July 12, 2002 » Diminishing Returns
 * Eric Schiller about the Cadaques Qualifier by Ed Schröder, CCC, October 11, 2002 » Eric Schiller, Kramnik versus Deep Fritz 2002
 * In memorandum - Jan Louwman by Ed Schröder, CCC, December 04, 2002 » Jan Louwman
 * Programmer challenge by Ed Schröder, CCC, February 20, 2003 » x86
 * Is there a way? by Ed Schröder, CCC, December 13, 2004 » Engine Testing

2005 ...

 * Where are all the congrats to Anthony Cozzie ??? by Ed Schröder, CCC, August 21, 2005 » WCCC 2005
 * Expert Assembler Question by Ed Schröder, CCC, August 26, 2005 » x86
 * To campaign or not by Ed Schroder, CCC, August 28, 2008
 * Re: SOMA by Ed Schröder from CCC, August 26, 2009

2010 ...

 * Re: "Automated Discovery of Search Extensions" by Ed Schröder, OpenChess Forum, June 26, 2010
 * Progess (often) is ugly, a summary try by Rebel, OpenChess Forum, July 03, 2011
 * In retrospect by Rebel, Rybka Forum, July 14, 2011
 * Apology to Vas by Rebel, Rybka Forum, August 17, 2011
 * Tuning again by Ed Schroder, CCC, November 01, 2011 » Stockfish's Tuning Method
 * ProDeo 1.7 official now by Ed Schröder, CCC, November 02, 2011
 * Wiki-leaks by Ed Schröder, Rybka Forum, January, 18, 2012
 * Hash table division by Ed Schröder, CCC, April 05, 2012 » Transposition Table

2015 ...

 * counting nodes vs counting evaluations by Ed Schroder, CCC, July 19, 2015 » Node
 * SMP (new style) by Ed Schroder, CCC, July 20, 2015 » Parallel Search
 * (E)valuation (F)or (S)tarters by Ed Schroder, CCC, July 26, 2015
 * Some musings about search by Ed Schroder, CCC, August 14, 2015 » Automated Tuning, Match Statistics, Search
 * Ideas by Ed Schroder, CCC, September 08, 2016
 * adaptive lazy eval by Ed Schroder, CCC, August 31, 2017 » Lazy Evaluation
 * Blog by Ed Schroder, CCC, November 16, 2017
 * Introducing PET by Ed Schröder, CCC, June 27, 2018 » Automated Tuning, Strategic Test Suite

=External Links=
 * Welcome to the Home of the Dutch Rebel
 * Rebel Pure Nostalgica
 * ideas » ProDeo
 * Programmer corner


 * Ed Schröder's ICGA Tournaments
 * Schröder, Ed (German) from Schachcomputer.info - Wiki

=References=

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