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Computer-Chess Wiki

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Private Engine List

This is intended to be a complete list of all PC-based chess engines that are not freely available for download. Such lists can get outdated quickly as new authors introduce new engines and older authors lose interest, drop out of the computer chess scene, and notify no one. Luckily most authors no longer prefer private versions because public versions get more attention and testing.

The rules for inclusion into this list

Recent Modifications (older modifications at bottom):



Engine Author Country Last year
of activity
Achilles / Axon Vladan Vuckovic Serbia 2007
Alcatraz Jacobus Opperman - 2015
Almond Richard Hall USA 2010
Amaia Mark Pearce UK 2012
Anaconda Frank Schneider & Kai Skibbe Germany 2011
Ancalagon Eelco de Groot - 2017
Anubis José C. Martínez Galán Spain 2012
ApiChess Max Himam France 2009
ARChess Arash Panahi Rad Iran 2007
Argonaut Ralf Dorr Germany 2006
Azraël Christopher Conkie United Kingdom 2009
Balor Roberto Munter & Matteo D'Annibale - 2014
Berta Felix Schmenger Germany 2006
Bird Greg McGlynn USA 2007
Blackmail Chris Florin USA 2011
Bliep ??? ??? 2015
Bolt Alex Brunetti Italy 2010
Bunny Yue Tao Hsu China 2011
Bursche Dieter Bürßner Germany 2010
Canalla Martin Schreiber Germany 2007
Cheetah Ralf Schäfer Germany 2009
Chepla Mikael Bäckman Sweden 2009
ChessPartner UCI Engine Lex Loep Netherlands 2014
ChessTraining Francisco Gambero Spain 2010
Chess Wizard Frederic Louguet France 2004
Chexa Mauro Riccardi Italy 2007
Chimp Andy Duplain United Kingdom 2009
Chompster Scott Farrell Australia 2006
Ciao Stefano Gemma Italy 2015
Climber Vlad Stamate USA 2013
Cogito Joerg Schaefer Germany 2009
Control (Stockfish/IvanHoe derivative) Eren Yavuz Turkey 2013
Cowrie Chess Chan Rasjid Singapore 2010
CrazyChips (Stockfish derivative) Nolan Denson ??? 2011
Cryptic Abdul Mateen Khan ??? 2012
CWU Chess Ashur Odah, Pushpinder Heer, Joe Lemley, Razvan Andonie, et al Romania 2013
CyberNezh ? ? 2019
Czolgista Tomasz Kazimierski Poland 2009
Dark Horse Daniel Billett USA 2015
DCP Daniel Anulliero France 2011
Decapod / K9 Tor Lattimore Australia 2007
Desperado David Blackman Australia 2006
Diep Vincent Diepeveen Netherlands 2011
Ditw Dustin L Espinosa Cuba 2010
Dr. Theopolis Corby Nichols USA 2009
EdlChess Stephan Edlich Germany 2009
EGM Pawel Kobylarz Poland 2009
Eichhörnchen Wieland Belka Germany 2009
ELVIS Björn Nacke Germany 2016
Equilibrium Simone Innocenti Italy 2007
Erendal Eric Devar Canada 2007
Ermintrude Vince Bickers United Kingdom 2007
EtaBeta Antonia Jeanrenaud Italy 2006
Eva 'ppyvabw' ??? 2015
Fantod Ivan Bacigal USA 2010
Fencer Shaun Press Australia 2006
FIBChess Guillermo Baches García Spain 2006
Flywheel Don Cross USA 2009
Gadget Hans van der Zijden ? 2019
Geisterauge Matthias Pfaff Germany 2007
Ginkgo Frank Schneider Germany 2019
Giordano Bruno Gyovai Tamás Hungary 2013
Goldbar Bart Goldhoorn Netherlands 2014
Hal André Taffarello Brazil 2008
HansDamf Gerd Isenberg Germany 2009
Hector for Chess (HfC) Csaba Jergler Hungary 2010
Hustle Motor Ben Lau - 2014
Hypernova Kupriyan Golubev ? 2019
Ikarus Munjong Kolss & Muntsin Kolss Germany 2009
Imp Aivaras Juzvikas Lithuania 2004
IsiChess Gerd Isenberg Germany 2007
Kallisto Bart Weststrate Netherlands 2009
Kirby Louis Zulli USA 2012
LearningLemming Sam Hamilton USA 2010
LRChess Langó Róbert Hungary 2013
Maestro Omid David Tabibi Israel 2007
Moneypenny Matt Shoemaker USA 2009
NaltaP312 Yves Catineau France 2013
Nightmare Joost Buijs Netherlands 2014
Now Mark Lefler USA 2009
NPMchess Mridul Muralidharan India 2007
Nullmover Michael Langeveld Netherlands 2009
Pandix Gyula Horváth Hungary 2011
Olympus Joshua Shriver USA 2009
Pebble Adam Goodwin USA 2009
Permabrain Kalyankumar Ramaseshan - 2016
Philidor Christian Barreteau and Bruno Lucas France 2009
Piccolino Luca Naddei Italy 2017
Puca Shaun Howe United Kingdom 2010
PuppetMaster Folkert van Heusden (POS, CPP1 & DeepBrutePos) - 2014
Raptor Steve Webber Luxembourg 2013
Rascal Derek Mauro USA 2007
Rinko Marco Grella Italy 2005
Rondo Zach Wegner & Anthony Cozzie USA 2011
Rookie Marcel van Kervinck Netherlands 2007
RookieMonster Erin Dame - 2017
Ribozyme Jack Crawford USA? 2013
Rubric Rob Williamson - 2016
Rustic ? - 2020
Sibyl Milikas Anastasios Greece 2010
Sidonia Ivan Urwin UK 2011
Sillycon Lasse Hansen Norway 2009
Singularity Mahmoud Uthman - 2017
Skipper Henk van den Belt - 2014
Spandrel Robert Purves New Zealand 2010
Spin Chess Phokham Nonava Switzerland 2013
Squirrel Shawn Chidester - 2016
StoofVlees Gian-Carlo Pascutto - 2019
Sweetleaf Anton UK 2011
Tang Gabriel Leperlier France 2012
Telepath Charles Roberson USA 2011
The Machine Jonathan Rosenthal - 2015
Thorgal Ben Tennison - 2014
Thresher Patrik Karlsson Sweden 2014
Tinker Brian Richardson USA 2011
TrojanKnight Ronald de Man ??? 2013
TuttiFruity J Donald ??? 2009
Tzunami Ivo Tops Netherlands 2009
Vlad Tepes Henk Fennema Netherlands 2009
WaDuuttie Maarten Claessens Netherlands 2009
Warp Peter McKenzie New Zealand 2007
Waster Geoff Westwood United Kingdom 2009
Weid Jaap Weidemann South Africa 2007
Weini Vivien Clauzon ??? 2018
WESP Eric Spek Netherlands 2007
WhiskySoda Balint Pfliegel ??? 2012
Wombat Thomas McBurney Australia 2010
Wraith Patrik Karlsson Sweden 2016
XiniX Tony van Roon-Werten Netherlands 2009
Z Manuel Díaz Spain 2011
Zadrexsaurus José Fragoso Portugal 2010



Inactive Private Engine List

These are the engines with no activity in the last 5 years. These engines are probably dead.

Engine Author Country Last year
of activity
Arthur Walter Ravenek Netherlands 1999
Chester Steve Timson USA 2002
Djenghis J.E.F. Kaan Netherlands 2002
Falcon Omid David Tabibi Israel 2008
Ferret Bruce Moreland USA 2001
Grok Peter Kappler USA 2003
Hossa Steffen Jakob Germany 2003
Insomniac James Robertson USA 2002
Jake Mark Netjes Netherlands 2003
Neurologic Jochen Peussner Germany 2005
Phark Tim Smith Australia 2003
Qalat Carlos Andrade Spain 2003
Ruy Lopez Álvaro Begué and José Manuel Morán Spain 1999
Searcher Frank Philips United Kingdom 2002
Shrike Dan Newman USA 2001
Stobor Tom Kerrigan USA 1995
Symbolic Steven Edwards USA 2011



Older Modifications:

publicly released as AdaChess; added link for Satana


Assistance in creating this list: Tony Thomas, Guenther Simon, Olivier Deville, Robert Allgeuer, Dr. Wael Deeb, Zach Wegner, Norbert Raimund Leisner, and Gerhard Schwager. Thanks guys!