Wikispaces : chessprogramming - items matching description

Belka

GerdIsenberg — Mon, 29 Jul 2013 21:29:38 GMT

Home * Engines * Belka

		Belka, (Белка) an UCI compliant, experimental chess engine based on the disputed Strelka 1.x by Jury Osipov with modifications by WildCat author Igor Korshunov. Belka 1.8.13 reads user adjustable evaluation parameters from a text file ^[1].
Soviet Space dog Belka ^[2]

Forum Posts

Belka in Fritz Gui by Fernando Villegas, CCC, November 27, 2007
No immediate threat by Gabor Szots, CCC, November 27, 2007
Is Belka a Rybka? by Eduard Nemeth, CCC, November 27, 2007
A question involving Belka evaluations by Eelco de Groot, CCC, December 13, 2007

External Links

Chess Engine

Downloads from sdchess.ru

Misc

References

^ Re: Is Belka a Rybka? by Andrej Sidorov, CCC, November 27, 2007
^ Белка и Стрелка — Википедия

What links here?

Page	Date Edited
Belka	Jul 29, 2013
Eduard Nemeth	Nov 22, 2014
Engines	Mar 10, 2018
Igor Korshunov	May 16, 2016
Jury Osipov	Jul 29, 2013
Strelka	May 17, 2016

Up one Level

Bionic Impakt

GerdIsenberg — Sat, 06 Sep 2014 20:57:46 GMT

Home * Engines * Bionic Impakt

Bionic Impakt,
a chess program based on Crafty by Hans Secelle and Albrecht Heeffer. As a strong chess player, Hans added a lot of knowledge incorporated from his former program Bionic in the prescan routines and evaluation as well as the opening book and time controls ^[1]. There were no attempts to "hide" anything from Hans' and Albrecht's side ^[2], and despite violating the Crafty license, since program changes were never published ^[3], and lack of explicit permission by Robert Hyatt ^[4], Bionic Impakt was allowed by the CSVN to participate the DOCCC 1998.

DOCCC 1998

While Bionic Impakt did quite well at the DOCCC 1998 and caused an éclat after winning from The King, Diep and Kallisto and finally becoming tied third, other participants complained ^[5] and raised forum discussions about using open source programs ^[6] and cloning ^[7], also because during the two weekends of the tournament, the playing version appeared to have changed ^[8], claiming some the program played the first weekend was more Crafty like ^[9], but explicitly later denied by Heeffer ^[10]. However, as a consequence Hans and Albrecht retired on Bionic Impakt and joined forces with Tom Vijlbrief on his program Ant ^[11] ^[12].

Forum Posts

Crafty vs Bionic Impakt, What's the difference Bob ? by Johan Havegheer, CCC, November, 24, 1998
Re: Dutch CCC - Arthur on 300MHz G3 2nd weekend by Robert Hyatt, CCC, November 29, 1998
Bionic vs Crafty, once again by Đorđe Vidanović, CCC, January 23, 1999
Bionic Vs Crafty Debate: some data required by Fernando Villegas, CCC, January 25, 1999
Re: Bionic Vs Crafty Debate: some data required by Albrecht Heeffer, CCC, January 25, 1999
Bionic v Crafty - a possible solution by Steve Maughan, CCC, January 25, 1999
Re: Bionic v Crafty - a possible solution by Ren Wu, CCC, January 25, 1999
Some news about H. Secelle (author of Bionic) by Johan Havegheer, Winboard Forum, September 08, 1999
Re: Whatever happened to crafty clone Bionic by Hans van der Zijden, CCC, February 05, 2003

External Links

References

^ Bionic vs Crafty, once again by Đorđe Vidanović, CCC, January 23, 1999
^ Re: Bionic Vs Crafty Debate: some data required by Albrecht Heeffer, CCC, January 25, 1999
^ Re: Chess programming by Gian-Carlo Pascutto, rgcc, June 18, 2002
^ Re: POOR BOB HYATT by Robert Hyatt, rgcc, February 21, 1999
^ Crafty vs Bionic Impakt, What's the difference Bob ? by Johan Havegheer, CCC, November, 24, 1998
^ Crafty implications ... by Chris Whittington, rgcc, March 4, 1999
^ Bionic vs Crafty, once again by Đorđe Vidanović, CCC, January 23, 1999
^ Re: Dutch CCC - Arthur on 300MHz G3 2nd weekend by Robert Hyatt, CCC, November 29, 1998
^ Chess program similarity experiment by Bruce Moreland, CCC, January 24, 1999
^ Re: Bionic Vs Crafty Debate: some data required by Albrecht Heeffer, CCC, January 25, 1999
^ Some news about H. Secelle (author of Bionic) by Johan Havegheer, Winboard Forum, September 08, 1999
^ Re: Whatever happened to crafty clone Bionic by Hans van der Zijden, CCC, February 05, 2003

What links here?

Page	Date Edited
Albrecht Heeffer	Sep 6, 2016
Alexs	Dec 7, 2017
Bionic	May 27, 2013
Bionic Impakt	Sep 6, 2014
DOCCC 1998	Feb 25, 2018
Engines	Mar 10, 2018
Fernando Villegas	Aug 15, 2016
Hans Secelle	Nov 2, 2012
Ren Wu	Jul 23, 2017
Đorđe Vidanović	Feb 20, 2017

Up one level

Bouquet

GerdIsenberg — Tue, 17 May 2016 09:44:15 GMT

Home * Engines * Bouquet

		Bouquet, an UCI compliant Ippolit derivative served as closed source by Jose Mº Velasco ^[1] . Bouquet was first released in May 2012 ^[2] , and requires MSVC++ 2010 dlls ^[3] . 32- and 64-bit executables for respective Windows versions are available. Bouquet 1.8 has a parallel search which supports up to 16 threads, and uses runtime-detection whether the x86 or x86-64 population count instruction is available or not ^[4] .
Lubin Baugin: Still-life with Chessboard ^[5]

Selected Games

TCEC Season 5, Stage 3, Bouquet 1.8b - Stockfish 151013 ^[6]

[Event "TCEC - Stage 3 - Season 5"]
[Site "http://www.tcec-chess.net"]
[Date "2013.10.24"]
[Round "5.4"]
[White "Bouquet 1.8b"]
[Black "Stockfish 151013"]
[Result "1-0"]
 
1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Qa5 7.Bd2 Ne7 8.Qg4 O-O
9.Bd3 Nbc6 10.Nf3 Ng6 11.a4 Bd7 12.h4 f5 13.exf6 Rxf6 14.h5 Nge7 15.h6 g6
16.Qg3 c4 17.Be2 Raf8 18.O-O R6f7 19.Qh2 Bc8 20.Rfb1 a6 21.Re1 Nf5 22.Red1
Nfe7 23.Rf1 Rf6 24.Rfe1 R6f7 25.Reb1 Rf6 26.Ra3 Rf5 27.Be3 Qd8 28.Rba1 Kh8
29.Re1 Kg8 30.Bg5 Qb6 31.Ra2 Qa5 32.Qd6 R5f7 33.Bd2 Rf6 34.Qg3 Rf5 35.Raa1
R5f6 36.Red1 R6f7 37.Qh2 Rf5 38.Qd6 R5f7 39.Rf1 Nf5 40.Qh2 Bd7 41.Bd1 Bc8
42.g4 Nfe7 43.Qg3 Rf6 44.Ra2 Qb6 45.Be2 Qa5 46.Kg2 b5 47.Rfa1 bxa4 48.Rxa4
Qb6 49.Kh1 R6f7 50.Be3 Qd8 51.R4a2 Bb7 52.Rb1 Qd7 53.Kg1 Rf6 54.Bc1 Bc8
55.Bg5 R6f7 56.Be3 Rf6 57.Rf1 Qb7 58.Bg5 R6f7 59.Kg2 Qd7 60.Bc1 Rf6 61.Ra1
Re8 62.Bf4 Bb7 63.Rfb1 Bc8 64.Ng5 Ref8 65.Nh3 a5 66.Qe3 Qd8 67.Bg3 Qd7
68.Ng5 Re8 69.f3 Rff8 70.Rb6 Qd8 71.Rb5 Bd7 72.Rc5 Rf6 73.Rb1 Ref8 74.Be5
a4 75.Bxf6 Rxf6 76.Ra1 Qa8 77.Rb5 Qa7 78.Rb4 a3 79.Rb2 Bc8 80.Rba2 Qd7
81.Rxa3 Qd6 82.Bxc4 dxc4 83.Ne4 Qf4 84.Nxf6+ Qxf6 85.Ra8 Kf7 86.Rb1 Nd5
87.Qe4 Bd7 88.Rb7 Ke7 89.Rg8 Kd6 90.Rg7 Be8 91.Rxh7 Qg5 92.Rh8 Bd7 93.h7
Qd2+ 94.Kg3 g5 95.Rxd7+ Kxd7 96.Rc8 Qc1 97.Kf2 Kxc8 98.h8=Q+ Kd7 99.Qg7+
1-0

Forum Posts

Bouquet New Chess Engine by Jose Mº Velasco, CCC, May 15, 2012
Bouquet 1.2 Relased by Jose Mº Velasco, CCC, June 18, 2012
relase Bouquet 1.5 x32,x64,pop64(SSE4.2) by Jose Mº Velasco, CCC, September 18, 2012
Bouquet_1.6 relase by Jose Mº Velasco, CCC, November 29, 2012
Bouquet 1.8 relase by Jose Mº Velasco, CCC, September 07, 2013

External Links

Chess Engine

Misc

References

^ Bouquet - Chess Bouquet-JukeBox
^ Bouquet New Chess Engine by Jose Mº Velasco, CCC, May 15, 2012
^ Chess Engine List from Ron Murawski's Computer-Chess Wiki
^ Bouquet1.8.7z \Bouquet1.8\Readme_Bouquet.1.8.txt
^ Lubin Baugin, The Five Senses - Still-life with Chessboard, oil on wood, 1630, Louvre
^ nTCEC - Stage 3

What links here?

Page	Date Edited
Bouquet	May 17, 2016
Engines	Mar 10, 2018
Jose Maria Velasco	Feb 27, 2014
TCEC Season 5	Jun 2, 2014

Up one level

Cluster Toga

GerdIsenberg — Thu, 07 Jan 2016 18:45:14 GMT

Home * Engines * Cluster Toga

Cluster Toga,
a chess engine based on Toga II by Thomas Gaksch, in turn based on Fruit 2.1 by Fabien Letouzey. Cluster Toga is a parallel extension of Toga, implemented by Kai Himstedt and Ulf Lorenz. It considers the Young Brothers Wait Concept using Message Passing Interface (MPI) for a work-stealing mechanism to balance the load dynamically, and utilizes a shared hash table. Cluster Toga represents an intra-cluster worker of the cluster chess entity GridChess. However, Cluster Toga played the IPCCC 2007 and the WCCC 2008 as "stand alone" engine instead of GridChess, due to a licensing issue in connection with the use of some parts of Crafty ^[1].

Description

given in 2008 from the ICGA tournament site ^[2]:

Cluster Toga is a Young Brothers Wait Concept (YBWC) parallelized version of Toga based on Fruit capable to run on a high performance cluster. In fact it is a "stand alone" base engine of the GridChess system which participated last year in Amsterdam but is limited to use a single cluster.

Photos & Games

IPCCC 2007

IPCCC 2007, Kai Himstedt, Stefan Meyer-Kahlen, Cluster Toga - Shredder ^[3] ^[4]

[Event "IPCCC 2007"]
[Site "Paderborn, GER"]
[Date "2007.12.27"]
[Round "02"]
[White "Cluster Toga"]
[Black "Shredder"]
[Result "1/2-1/2"]
 
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.O-O-O 
Bd7 9.f4 b5 10.Bxf6 gxf6 11.Kb1 Rc8 12.g4 h5 13.gxh5 Rxh5 14.h4 Qb6 15.Nce2
Rh8 16.Rh2 Na5 17.Ng3 Nc4 18.Qe2 a5 19.Qf3 a4 20.Bxc4 bxc4 21.Nde2 Rb8 22.Qc3 
Qb4 23.a3 Qxc3 24.Nxc3 Bh6 25.Nge2 Ke7 26.Rd4 Rhc8 27.Rh1 Rc7 28.Ka2 Rg8 
29.Rhd1 Rc6 30.Kb1 Rg4 31.h5 Rh4 32.Nb5 Rh2 33.Nxd6 e5 34.Rd5 Rxe2 35.Nxf7 
Kxf7 36.Rxd7+ Kg8 37.Rg1+ Kh8 38.Rd8+ Kh7 39.Rd7+ Kh8 40.Rd8+ Kh7 41.Rd7+ Kh8
1/2-1/2

WCCC 2008

WCCC 2008, round 1, Harvey Williamson and Timo Klaustermeyer, Cluster Toga - Hiarcs ^[5] ^[6]

[Event "WCCC 2008"]
[Site "Beijing, China"]
[Date "2008.09.28"]
[Round "1"]
[White "Cluster Toga"]
[Black "Hiarcs"]
[Result "1/2-1/2"]
 
1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be3 e5 7.Nb3 Be6 8.f3 Be7 
9.Qd2 O-O 10.O-O-O Nbd7 11.g4 b5 12.g5 Nh5 13.Kb1 Qc7 14.Nd5 Bxd5 15.exd5 Nb6 
16.Na5 Nxd5 17.Qxd5 Qxa5 18.Bd3 g6 19.Qb7 Rfe8 20.Be4 Qa4 21.Bc6 Rab8 22.Qa7 
Rec8 23.c3 Ng7 24.h4 Nf5 25.Bb6 Rcf8 26.Bf2 Rfd8 27.Ka1 Kg7 28.Be4 Rde8 29.h5
Qc4 30.Qxa6 Bxg5 31.Rhg1 Kf6 32.Ba7 Rbd8 33.hxg6 hxg6 34.Bb6 Rdb8 35.Qa7 Qe6 
36.Rd3 Reh8 37.Rgd1 Rbc8 38.Bb7 Rcf8 39.Bc7 Kg7 40.Be4 Be7 41.Bb6 Bd8 42.Bf2 
Bh4 43.Bb6 Bd8 44.Bf2 Bh4 45.Bb6 Bd8 1/2-1/2

Authors

^[7]

Author	Role	Parts
Kai Himstedt	engine programmer
Ulf Lorenz	engine programmer
Thomas Gaksch	engine programmer	Toga
Clemens Keck	book author
Fabien Letouzey	engine programmer	Fruit
Timo Klaustermeyer	book author, operator

Forum Posts

Cluster Toga/Paderborn championship by ChessAddict, CCC, January 03, 2008
Toga Cluster by Charles Roberson, CCC, September 29, 2008
Cluster Toga based on Fruit Source Code by Kai Himstedt, CCC, June 07, 2010
Please, Cluster Toga && Zochova by Arturo Ochoa, CCC, November 28, 2012 » Zochova
Re: Please, Cluster Toga && Zochova by Jim Ablett, CCC, November 28, 2012

External Links

References

^ Kai Himstedt (2012). GridChess: Combining Optimistic Pondering with the Young Brothers Wait Concept. ICGA Journal, Vol. 35, No. 2
^ Cluster Toga's ICGA Tournaments
^ Index of /sebi/Paderborn2007 by Sebastian Böhme
^ International Paderborn Computer Chess Championships (IPCCC), CSVN-tournament site
^ Index of /sebi/WCCC-Beijing-2008 pictures by Sebastian Böhme
^ Beijing 2008 - Chess - Round 1 - Game 3 (ICGA Tournaments)
^ Cluster Toga's ICGA Tournaments

What links here?

Page	Date Edited
Arturo Ochoa	May 4, 2017
Clemens Keck	Oct 15, 2017
Cluster Toga	Jan 7, 2016
Engines	Mar 10, 2018
Fruit	Sep 27, 2016
GridChess	Jul 13, 2016
GridGinkGo	Jul 13, 2016
GridProtector	Jul 13, 2016
IPCCC 2007	May 30, 2016
Kai Himstedt	Jun 28, 2016
Mathematician	Apr 9, 2018
Rybka Controversy	Jan 18, 2018
Thomas Gaksch	Jan 8, 2016
Timo Haupt	Jan 8, 2016
Toga	Dec 28, 2017
Ulf Lorenz	Dec 22, 2016
University of Hamburg	Jan 20, 2018
University of Paderborn	Aug 17, 2014
WCCC 2008	Jan 3, 2017
Who's Who	Sep 6, 2017
Zochova	Nov 9, 2014

Up one level

Cyclone

GerdIsenberg — Sun, 24 Nov 2013 14:31:19 GMT

Home * Engines * Cyclone

		Cyclone, an UCI compliant, derivative open source chess engine under the GNU General Public License 3.0 written by Norman Schmidt in C++, based on Fruit and Toga ^[1] ^[2]. Cyclone 3.4 uses principal variation search, iterative deepening, MVV-LVA, transposition tables, null-move pruning, quiescence search, futility pruning, history pruning, lazy evaluation, razoring, and various search reductions and extensions. Cyclone's parallel search utilizes threads using a shared hash table ^[3]. Cyclone xTreme, based on Fruit 2.1 by Fabien Letouzey, Toga II by Thomas Gaksch, Grapefruit 1.0 by Vadim Demichev, Toga CMLX 145e4 by Teemu Pudas, and Cyclone 3.4 by Norman Schmidt, uses a configuration file to obtain more than 150 evaluation, material, search, and transposition table parameters ^[4].
Polar cyclone ^[5]

Forum Posts

Cyclone 1.0 beta by Norman Schmidt, CCC, July 26, 2008
Cylone 1.0 beta now available by Norman Schmidt, CCC, July 27, 2008
Cyclone 1.0 and Cyclops 1.0 avaliable by Norman Schmidt, CCC, August 04, 2008
Cyclone 2.0 released by Norman Schmidt, CCC, November 03, 2008
Cyclone 2.1 released by Norman Schmidt, CCC, November 05, 2008
Cyclone 2.3 released by Norman Schmidt, CCC, December 23, 2008
Cyclone 3.4 released by Norman Schmidt, CCC, February 01, 2009
Cyclone by Aaron87747, autochess, April 28, 2009
Annals of testing an elusive engine by Rainer Neuhäusler, CCC, October 05, 2009
Cyclone xTreme II by dinosaur123, Rybka Forum, November 11, 2009
Cyclone / Fire ... question to Norman! by Frank Quisinsky, CCC, April 29, 2010

External Links

Chess Engine

Cyclone

References

^ Fruit (software) - Derivatives from Wikipedia
^ IMPORTANT: Cyclone is a fork of Toga II 1.4b5 which has been relicensed under the GPL 3. Code from Cyclone cannot be reused in Fruit/Toga which is GPL 2+., Posix ports of some recent version of Toga II by Michel Van den Bergh
^ Cyclone by Aaron87747, autochess, April 28, 2009
^ Cyclone from chesslogik.com
^ Polar cyclone near Iceland on September 4, 2003, Jacques Descloitres, MODIS Rapid Response Team, NASA/GSFC, NASA Visible Earth: Low off Iceland

What links here?

Page	Date Edited
13th Computer Olympiad	Jul 22, 2017
Cyclone	Nov 24, 2013
Engines	Mar 10, 2018
Fruit	Sep 27, 2016
Norman Schmidt	Oct 12, 2017

Up one Level

Defenchess

GerdIsenberg — Sun, 18 Mar 2018 08:54:28 GMT

Home * Engines * Defenchess

Defenchess,
a UCI compliant open source chess engine by Can Cetin and Dogac Eldenk, written in C++ and licensed under the GPL 3. Formerly dubbed SCTR released in September 2017 ^[1] , it was renamed ^[2] in advance to its participation of the 4th division in TCEC Season 11 ^[3]. As a surprise, the newcomer convincingly won the TCEC Season 11 4th division ^[4]. During the TCEC Season 11, 3rd division, the Defenchess Bitbucket link lost power ^[5] and the project was apparently retreated ^[6] ^[7] .

Features

Board Representation

Search

Evaluation

Forum Posts

Re: updates chess engines by Tony Mokonen, CCC, September 15, 2017
SCTR 1.1d win64 by Norbert Raimund Leisner, CCC, November 30, 2017
Re: SCTR 1.1d win64 by Carlos Canavessi, CCC, January 03, 2018
SCTR by Alfred Palang, CCC, March 17, 2018

External Links

nitro_can / Defenchess - Bitbucket (dead link)
GitHub - Dogacel/sctr: SCTR Chess Engine (dead link)
Defenchess at CCRL 40/4
Defenchess wins TCEC Division 4, Chessdom, January 06, 2018 » TCEC Season 11, Fourth Division

References

^ Re: updates chess engines by Tony Mokonen, CCC, September 15, 2017
^ Re: SCTR 1.1d win64 by Carlos Canavessi, CCC, January 03, 2018
^ TCEC Season 11 – information and participants, Chessdom, December 28, 2017
^ Defenchess wins TCEC Division 4, Chessdom, January 06, 2018
^ Re: SCTR 1.1d win64 by Günther Simon, CCC, January 08, 2018
^ Re: SCTR by Günther Simon, CCC, March 17, 2018
^ RWBC XB/UCI chronology mentions Defenchess derivative of Donna

What links here?

Page	Date Edited
Defenchess	Mar 18, 2018
Engines	Mar 10, 2018
TCEC Season 11	Apr 18, 2018

Up one Level

Delphil

GerdIsenberg — Sat, 17 Sep 2016 17:06:47 GMT

Home * Engines * Delphil

Delphil,
a WinBoard and UCI compliant chess engine written by Philippe Fabiani in Pascal using Delphi 7 ^[1] , first released in April 2004. Delphil started its life as Delphi port of Tom Kerrigan's TSCP, and in 2009, Delphil still owned about 80% of TSCP's code base with move generation and search almost identical. Most changes were done in evaluation, further a tranposition table, various extensions and null move pruning were added ^[2] . Delphil 3.2, released on September 28, 2014, applies a parallel search with up to 32 processors simultaneously, and is able to probe Nalimov Tablebases ^[3] .

Forum Posts

2005 ...

Gauntlet Delphil 1.3 - games by Karl-Heinz Söntges, CCC, April 16, 2005
Gauntlets Liste B 5' + 5" Delphil 1.5a - table, games by Karl-Heinz Söntges, CCC, August 03, 2005
Delphil 1.7 : 2377 by Patrick Buchmann, CCC, June 11, 2007
Delphil 1.8 : 2405 by Patrick Buchmann, CCC, July 01, 2007
Delphil 1.9 : 2300 by Patrick Buchmann, CCC, June 09, 2008
Delphil 1.9b : 2370 by Patrick Buchmann, CCC, July 05, 2008
Delphil 1.9c : 2368 by Patrick Buchmann, CCC, August 10, 2008
Delphil 1.9e : 2313 by Patrick Buchmann, CCC, October 06, 2008
Delphil 1.9f : 2307 by Patrick Buchmann, CCC, November 01, 2008
Delphil 1.9g : 2346 by Patrick Buchmann, CCC, April 06, 2009
Delphil 2.3 : 2368 by Patrick Buchmann, CCC, September 04, 2009

2010 ...

Nice Delphil 2.6a finish against Amundsen 0.80 by Graham Banks, CCC, October 05, 2010 » Amundsen
Delphil 2.9e released by Gabriel Leperlier, CCC, July 13, 2012

2015 ...

ELO inflation ha ha ha by Henk van den Belt, CCC, September 16, 2016 » Stockfish, Match Statistics, Playing Strength, TCEC Season 9 ^[4]

External Links

References

^ Embarcadero Delphi - Early Borland Years (1995-2004) - Wikipedia
^ Fabiani Philippe from blitzchess.fr by Eric Belot (French)
^ Delphil - home
^ Delphil 3.3b2 (2334) - Stockfish 030916 (3228), TCEC Season 9 - Rapid, Round 11, September 16, 2016

What links here?

Page	Date Edited
Delphil	Sep 17, 2016
Engine releases	Apr 23, 2018
Engines	Mar 10, 2018
Match Statistics	Mar 31, 2018
Philippe Fabiani	Sep 15, 2016
Playing Strength	Mar 31, 2018
Stalemate	Feb 21, 2018
Stockfish	Apr 7, 2018
TCEC Season 5	Jun 2, 2014
TCEC Season 6	Dec 2, 2014
TCEC Season 9	Nov 6, 2017
TSCP	Feb 5, 2016

Up one Level

DON

GerdIsenberg — Sun, 08 Oct 2017 18:16:31 GMT

Home * Engines * DON

DON,
an UCI compliant open source chess engine by Ehsan Rashid derived from Glaurung and Stockfish ^[1], distributed under the GNU General Public License. DON supports up to 128 cores for its parallel search, and up to 1024 GiB of hash memory including large pages ^[2].

Forum Posts

DON 1.0b derivate Glaurung by Jose Mº Velasco, CCC, February 03, 2014
DON 1.0b With licensed by Jose Mº Velasco, CCC, February 12, 2014
Re: DON 1.0b With licensed by Ehsan Rashid, CCC, February 22, 2014

External Links

erashid/DON · GitHub

References

^ Re: DON 1.0b derivate Glaurung by Marco Costalba, CCC, February 03, 2014
^ DON/Readme.md at master · erashid/DON · GitHub

What links here?

Page	Date Edited
DON	Oct 8, 2017
Ehsan Rashid	May 4, 2015
Engines	Mar 10, 2018
Gavon	Apr 30, 2018
Stockfish	Apr 7, 2018

Up one Level

Fire

GerdIsenberg — Fri, 13 Oct 2017 06:37:34 GMT

Home * Engines * Ippolit * Fire

		Fire, (Firebird, Fire xTreme) an UCI compliant chess engine by Norman Schmidt ^[1], until version 3.0 derived from IvanHoe and the Ippolit series of programs with some help of Milos Stanisavljevic. Initially called Firebird, and later renamed to Fire due to a trademark naming conflict ^[2], it was released as open source, Fire licensed under the GNU GPL. The sources were later closed with Windows executables available for download for recent Intel processors ^[3]. Fire features magic bitboards, it can be configured with more than 70 UCI options, and applies a SMP parallel search.
Fire ^[4]

Fire 4

Fire 4, released in December 2014, was a compete re-write and does not use any source code from or related to Ippolit. It supports Syzygy Bases ^[5] ^[6], and includes a revamped memory management which uses OpenMP #pragmas to utilize thread local storage ^[7] and minimize the amount of 'shared' resources among threads for its SMP implementation. Testing was done via massive parallel, automated 24/7 ultra-fast chess engine matches using Cutechess-cli and LittleBlitzer. Code changes were tested to a very high level of confidence using LOS and SPRT (min. 40,000 games) against a pool of top engines. Development and testing included approx. 200,000 - 240,000 ultra-fast games per day ^[8].

Fire 5, Fire 6.1

Fire 5, released in November 2016, improved with new evaluation terms, and SPSA tuned evaluation and search parameters, and supports Chess960. Fire 6.1, released in September 2017, added approximately 30-40 Elo in playing strength ^[9].

Forum Posts

2010 ...

Firebird 1.0.... by Dr.Wael Deeb, CCC, January 12, 2010
+ Firebird wins Amar Gambit + related chess notes + by Rainer Neuhäusler, CCC, January 30, 2010
+ Firebird wins Ware Gambit + by Rainer Neuhäusler, CCC, February 02, 2010
I should mention that I also made a few small fixes to fire by Dann Corbit, CCC, March 09, 2011
Houdini, Fire, IvanHoe, (and Rybka?) are 'clones'...? by Norman Schmidt, CCC, April 30, 2011
Fire 3.0 released by Stefan Pohl, CCC, December 13, 2013

2015 ...

Fire 4 for linux by Lucas Braesch, CCC, July 03, 2015
Fire 5 by Rainer Neuhäusler, CCC, May 31, 2016
Fire 5 is out! by Dmitri Gusev, CCC, November 14, 2016
Fire 6 is available! by Anton Ross, CCC, September 22, 2017
Re: Fire 6 is available! by Norman Schmidt, CCC, September 23, 2017

External Links

Chess Engine

Fire Chess Engine
Fire - www.chesslogik.com
Fire – the chess engine releases a new version, Chessdom, October 02, 2017 » TCEC Season 10
Fire in CCRL 40/40

Misc

References

^ Re: Fire 3.0 released by Norman Schmidt, CCC, December 13, 2013
^ Chess Engine List from Ron Murawski's Computer-Chess Wiki
^ Fire 3.0 released by Stefan Pohl, CCC, December 13, 2013
^ Photo of a fire taken with a 1/4000th of a second exposure by Awesomoman, 2009, Fire from Wikipedia
^ Fire chess engine | ABOUT
^ Fire chess engine | HISTORY
^ Use Thread-local Storage to Reduce Synchronization | Intel® Developer Zone, November 2, 2011
^ Information provided by Norman Schmidt, July 2015
^ Fire – the chess engine releases a new version, Chessdom, October 02, 2017

What links here?

Page	Date Edited
Armageddon	Jan 24, 2014
ChessGUI	Jan 17, 2018
Dmitri Gusev	Dec 14, 2015
Engine releases	Apr 23, 2018
Engines	Mar 10, 2018
Fire	Oct 12, 2017
Firenzina	Sep 21, 2017
Ippolit	May 17, 2016
Ivanhoe	Aug 3, 2015
Matthew R. Brades	Jun 9, 2017
Milos Stanisavljevic	May 23, 2016
Norman Schmidt	Oct 12, 2017
TCEC Season 10	Jan 3, 2018
TCEC Season 11	Apr 18, 2018
TCEC Season 6	Dec 2, 2014
TCEC Season 8	Nov 30, 2015
TCEC Season 9	Nov 6, 2017

Up one Level

Firenzina

GerdIsenberg — Thu, 21 Sep 2017 19:43:57 GMT

Home * Engines * Ippolit * Fire * Firenzina

Firenzina,
an UCI compliant open source chess engine by Norman Schmidt, Dmitri Gusev and Matthew R. Brades ^[1]. It is a derivative of Fire 2.2 xTreme by Norman Schmidt ^[2].

Forum Posts

Firenzina 2.2.2 xTreme, a clone of Fire 2.2 xTreme by Dmitri Gusev, CCC, February 27, 2013
Firenzina GitHub Created, Contributors Welcome by Dmitri Gusev, CCC, March 02, 2013
Firenzina 2.3.1 xTreme by Dmitri Gusev, CCC, May 29, 2013
Firenzina 2.4 xMasTreme by Dmitri Gusev, CCC, December 15, 2013
Firenzina 2.4.1 xTreme by Dmitri Gusev, CCC, January 27, 2014
Firenzina 2.4.2 xTreme released by Dmitri Gusev, CCC, April 13, 2014
Firenzina 2.4.1 for Android by Dmitri Gusev, CCC, August 25, 2014 » Engines for Android
Firenzina 2.4.3 xTreme by Dmitri Gusev, CCC, November 26, 2014

External Links

Chess Engine

Misc

Gato Barbieri - El Parana, album Under Fire (1971, 1973), YouTube Video
feat. Lonnie Liston Smith, John Abercrombie, Stanley Clarke, Roy Haynes, James Mtume, Airto Moreira, Moulay Ali Hafid

References

What links here?

Page	Date Edited
Dmitri Gusev	Dec 14, 2015
Engines	Mar 10, 2018
Fire	Oct 12, 2017
Firenzina	Sep 21, 2017
Gavon	Apr 30, 2018
Matthew R. Brades	Jun 9, 2017
Norman Schmidt	Oct 12, 2017

Up one Level

Gambit Fruit

GerdIsenberg — Fri, 29 Mar 2013 15:25:21 GMT

Home * Engines * Gambit Fruit

		Gambit Fruit, a GPL licensed, Fruit and Toga derivative open source engine written by Ryan Benitez in C++. It has some interesting changes primarily based on the last open-source-version Fruit 2.1 ^[1], the goal being a fun free and aggressive chess engine ^[2]. Short after its release in end of 2005, Ryan joined forces with Fabien Letouzey and Joachim Rang for a commercial Fruit, and incorporated Gambit Fruit features into Fruit 2.2 and subsequent versions.
Minoan Ceramic for the Sacrifice of Fruit ^[3] ^[4]

Added Features

and changes in Gambit Fruit ^[5]:

Alternate piece-square tables
Rook pawn score adjustment
Rook Bishop bonus
Queen Knight bonus
Two Rook penalty
Two Knight penalty
Minor tuning to piece values
King tropism
Side to move bonus
Rook on bad pawn file bonus
Pawns on Bishop colour penalty (fewer pawns is better for bishops and with one bishop you should not block it with your own pawns)
Improved pawn structure
New Lazy Eval
Rebel reductions with re-searches ^[6] ^[7]
Bitbases (using Scorpio bitbase files)
Contempt factor

Acknowledgment

Thank you to Fabian for Fruit 2.1, Thomas for Toga, and to Bryan Hofmann for the Windows compile ^[8].

Forum Posts

Re: Gambit Fruit ? by Ryan B., CCC, November 15, 2005
Has anyone tested Gambit Fruit with Rebel Reductions on? by Ryan B., CCC, November 15, 2005 » Reductions, Rebel
Gambit Fruit Beta 3 available by Ryan B., CCC, November 19, 2005
Gambit Fruit 1.0 Beta 4b is out now by Ryan Benitez, Winboard Forum, December 02, 2005
congratulations to gambit-fruit! by Thorsten Czub, CCC, January 13, 2006
Chess engine oldies upgrades by Denis P. Mendoza, Toga Developers Discussion Board, December 30, 2008
posix source for GambitFruit4bxSE ? by Martin Helmer, CCC, January 28, 2009

External Links

References

^ Gambit fruit
^ Re: Gambit Fruit ? by Ryan B., CCC, November 15, 2005
^ Minoan Ceramic from Phaistos, Heraklion Archaeological Museum
^ Fruchtbarkeitsschale für die Opferung von Früchten aus Phaistos zu sehen im Archäologischen Museum in Herakleion, Minoische Religion from Wikipedia.de (German)
^ Gambit fruit, gfruit4b.zip - readme.txt
^ Has anyone tested Gambit Fruit with Rebel Reductions on? by Ryan B., CCC, November 15, 2005
^ Programmer Corner - How Rebel Plays Chess - Reductions by Ed Schröder, pdf reprint
^ Gambit fruit, gfruit4b.zip - readme.txt

What links here?

Page	Date Edited
Engines	Mar 10, 2018
Fruit	Sep 27, 2016
Fruit Reloaded	Dec 8, 2017
Gambit Fruit	Mar 29, 2013
Reductions	Nov 1, 2017
Ryan Benitez	May 16, 2015
Sinobyl	Jul 3, 2014

Up one Level

GullChess

GerdIsenberg — Tue, 27 Jun 2017 16:14:45 GMT

Home * Engines * GullChess

		GullChess, (Gull) an UCI compliant open source engine in the public domain by Vadim Demichev ^[1], inspired by ideas and code from other open source engines, notably from Ivanhoe of the Ippolit family of programs, and from Strelka, whose authors are suspected of reverse engineering Rybka, to examine and use her ideas. Ron Murawski's Computer-Chess Wiki mentions GullChess as Ivanhoe derivative ^[2]. The further socialization of concrete implementations with disputed origin in the public domain, as already started with Ippolit, remains a highly controversial topic.
Scheveningen Gulls ^[3]

Source Code Repositories

Description

GullChess applies magic bitboards to determine sliding piece attacks, a material table indexing scheme with disjoint light and dark bishops, PVS with aspiration windows, and a parallel search based on processes. Version 1.2 is written in compact and neat C++ code and consists of only one single source file. It features generic function templates in recursive search routines as well in various functions called by search, i.e. for move generation, with side to move and hash-move exclusion for singular extensions as boolean template parameters, delegating conditions on these to compile-time.

Releases & Forks

Gull 2.1

Gull 2.1, released in June 2013, has evaluation weights optimized with the use of automated tuning (source code included). Gull's 2.1 evaluation is no longer almost identical to that of Ivanhoe. Further, it features some minor search, time management and SMP efficiency enhancements ^[4].

Gull 2.8 beta

Gull 2.8 beta, released in January 2014 and competing TCEC Season 6, comes with minor search tweaks but a full evaluation rewrite, being back an original engine ^[5]. A BMI2 build provides a small speedup on Haswell architecture due to the replacement of magic bitboards by PEXT bitboards.

Gull 3

Gull 3, released April 17, 2014, with further optimization of evaluation weights and a rewritten SMP search, features nonlinear king shelter evaluation and more endgame knowledge. Basil Falcinelli implemented a Linux port ^[6] and Syzygy Bases support, introducing Fathom ^[7], while Michael Byrne worked on a Mac OS port ^[8] dubbed Hawkeye ^[9], Tom Hyer introduced his Gull 3 derivative Roc ^[10], and Norman Schmidt SeaGull also based on Gull 3 ^[11].

LazyGull

LazyGull is a free UCI chess engine under the MIT License derived from Gull 3 by Basil Falcinelli ^[12]. LazyGull features Syzygy Bases support via Fathom, Lazy SMP, and PDEP bitboards for modern x86-64 CPUs, and is portable to Windows, Linux and MacOSX ^[13].

Forum Posts

2010 ...

Проект "Чайка" by ThinkingALot, immortalchess, June 07, 2010, translated by Google Translate
GullChess by Olivier Deville, Winboard Forum, June 09, 2010
gull chess by Karger, OpenChess Forum, June 12, 2010
Re: gull chess by ThinkingALot, OpenChess Forum, June 13, 2010 » Gaviota
Re: gull chess by ThinkingALot, OpenChess Forum, June 17, 2013 (Gull 2.1)
Re: gull chess by ThinkingALot, OpenChess Forum, January 26, 2014 (Gull 2.8 beta & Gull 2.9 alpha)
GullChess 2.1 by Norbert Raimund Leisner, CCC, June 18, 2013
DTS-like SMP by ThinkingALot, OpenChess Forum, July 25, 2013 » Parallel Search
Re: Gull by ThinkingALot, immortalchess, February 10, 2014

2015 ...

Gull 3 (Linux port) released by Basil Falcinelli, CCC, October 28, 2015
Gull 3 x64 Mac Results by Michael B, CCC, October 30, 2015
Gull 3 Linux+Syzygy and Fathom released by Basil Falcinelli, CCC, November 20, 2015 » Fathom
Gull 3.0.1 available, takes advantage of hyperthreading by Dmitri Gusev, CCC, January 21, 2016
Gull 3.0 Syzygy in GitHub by Jose Mº Velasco, CCC, May 19, 2016
Gull 3 x64 by Michael B, CCC, July 01, 2016
Hawkeye 1.01 by Michael B, CCC, July 05, 2016
Hawkeye 1.01 Released by Michael B, CCC, July 07, 2016
Hawkeye is now on Github by Michael B, CCC, July 10, 2016
Hawkeye 1.02 Released by Michael B, CCC, July 11, 2016
HAwkeye 1.03 Released by Michael B, CCC, July 16, 2016
Future of Gull by Tom Hyer, CCC, August 23, 2016 ^[14]
New engine "Roc" by Tom Hyer, CCC, January 18, 2017
Open-source improvements released by Norman Schmidt, CCC, June 26, 2017

External Links

Source Code Repositories

Rating

Misc

References

^ Chess engine from Wikiepdia
^ Chess Engine List from Ron Murawski's Computer-Chess Wiki
^ Gulls at the beach of Scheveningen Kurhaus, Photo by Gerd Isenberg, December 26, 2015
^ Re: gull chess by ThinkingALot, OpenChess Forum, June 17, 2013 (Gull 2.1)
^ Gull 2.8 beta.zip/Gull 2.8 beta/readme.txt
^ Gull 3 (Linux port) released by Basil Falcinelli, CCC, October 28, 2015
^ Gull 3 Linux+Syzygy and Fathom released by Basil Falcinelli, CCC, November 20, 2015
^ Gull 3 x64 Mac Results by Michael B, CCC, October 30, 2015
^ Hawkeye 1.01 by Michael B, CCC, July 05, 2016
^ GitHub - TomHyer/Roc: C++ chess engine derived from Gull 3
^ GitHub - FireFather/seagull: chess engine based on Gull 3 by Norman Schmidt
^ GitHub - basil00/Gull: Gull chess (Linux/Mac port) - The LazyGull Chess Engine
^ Gull/README.md at master · basil00/Gull · GitHub
^ hyer / SonsOfTheBird / source / Slizzard — Bitbucket
^ Future of Gull by Tom Hyer, CCC, August 23, 2016
^ Gull Lake (Michigan) from Wikipedia

What links here?

Page	Date Edited
Basil Falcinelli	Jun 23, 2017
Donna	Aug 17, 2017
Dynamic Tree Splitting	Apr 10, 2017
Engine releases	Apr 23, 2018
Engines	Mar 10, 2018
Gaviota	Jan 21, 2018
GullChess	Jun 27, 2017
Michael Byrne	Jun 23, 2017
Norman Schmidt	Oct 12, 2017
Parallel Search	Dec 30, 2017
Stockfish	Apr 7, 2018
Syzygy Bases	Apr 19, 2018
TCEC Season 10	Jan 3, 2018
TCEC Season 11	Apr 18, 2018
TCEC Season 5	Jun 2, 2014
TCEC Season 6	Dec 2, 2014
TCEC Season 7	Jan 23, 2015
TCEC Season 8	Nov 30, 2015
TCEC Season 9	Nov 6, 2017
Vadim Demichev	Jul 26, 2013

Up one Level

Igorrit

GerdIsenberg — Sun, 16 Aug 2015 11:53:12 GMT

Home * Engines * Ippolit * Igorrit

Igorrit,
an UCI compliant open source chess engine and third incarnation of the Ippolit and RobboLito series of programs, first one of the series applying a parallel search ^[1], released in January 2010.

Forum Posts

Test tournament starts: Igorrit Special by Harun Taner, CCC, January 09, 2010
First experience with Igorrit by Johan Havegheer, CCC, January 17, 2010
IPPOLIT by kingliveson, OpenChess Forum, December 12, 2011
Che ver. 1.0, a free, open-source clone of Igorrit 0.086v4 by Dmitri Gusev, CCC, May 07, 2015
Che ver. 1.1, a free, open-source clone of Igorrit 0.086v4 by Dmitri Gusev, CCC, May 22, 2015
Che ver. 2.1, a free, open-source clone of Igorrit 0.086v9 by Dmitri Gusev, CCC, June 04, 2015

External Links

Chess Engine

Misc

References

^ IPPOLIT from Wikipedia

What links here

Page	Date Edited
Che ES	Aug 18, 2015
Engines	Mar 10, 2018
Harun Taner	May 17, 2015
Igorrit	Aug 16, 2015
Ippolit	May 17, 2016
Ivanhoe	Aug 3, 2015
Robbolito	Sep 23, 2016
Roberto Munter	Sep 24, 2014

Up one level

Ivanhoe

GerdIsenberg — Mon, 03 Aug 2015 15:12:09 GMT

Home * Engines * Ippolit * IvanHoe

		IvanHoe, an UCI compliant open source chess engine of the Ippolit and RobboLito series of programs, first released in January 2010 and base of a lot of further derivatives. IvanHoe features a SMP search, Multi-PV, and Chess960 ^[1], and uses a decrementing versioning scheme. Authors are the pseudonymous Ippolit comrades, Yakov Petrovich Golyadkin ^[2], Igor Igorovich Igoronov, Roberto Pescatore, Yusuf Ralf Weisskopf, and Ivan Skavinsky Skavar ^[3]. Izak Pretorius alias PeterPan keeps computer chess aficionados and testers busy with IvanHoe "compiles" ^[4], and the release of the IvanHoe 46h derivative PanChess ^[5]. Franklin Titus alias kingliveson ^[6] provides source and executables as well ^[7].
Classics Comics No. 2 ^[8]

Forum Posts

ACCA stance on Ippo, Robbo and such by Charles Roberson, CCC, January 06, 2010 » ACCA
Ivan The Terrible by kingliveson, CCC, January 14, 2010
Improve IvanHoe? by benstoker, OpenChess Forum, June 26, 2010
Which IvanHoe Engine Is Strongest by David Schumaker, CCC, December 02, 2010
Just stumbled upon an open-source free engine by Kai Laskos, CCC, January 21, 2011
An example of code copying (IvanHoe) ? by BB+, OpenChess Forum, January 27, 2011
In support of the IvanHoe authors by Norman Schmidt, CCC, August 16, 2013

External Links

Chess Engine

Misc

References

^ IPPOLIT from Wikipedia
^ The Double: A Petersburg Poem a novella written by Fyodor Dostoyevsky
^ Abdul Abulbul Amir from Wikipedia
^ Re: SCCT Rating List (25.05.2012) by Izak Pretorius, CCC, June 01, 2012
^ IPPOLIT - PanChess
^ Computer-Chess Wiki Forum - Update Information: October 23, 2010
^ Index of /engine/ivanhoe by kingliveson
^ Cover scan of a Classics Comics No. 2, 1941, by Chordboard, July 2008, Classics Illustrated from Wikipedia

What links here

Page	Date Edited
Engines	Mar 10, 2018
Fire	Oct 12, 2017
Franklin Titus	Aug 20, 2013
Gavon	Apr 30, 2018
GullChess	Jun 27, 2017
Hakkapeliitta	Apr 26, 2016
Igorrit	Aug 16, 2015
Ippolit	May 17, 2016
Ivanhoe	Aug 3, 2015
Kai Laskos	Jan 21, 2018
Milos Stanisavljevic	May 23, 2016
Norman Schmidt	Oct 12, 2017
Robbolito	Sep 23, 2016
Roberto Munter	Sep 24, 2014
TCEC Season 6	Dec 2, 2014
Thinker	Jan 7, 2016

Up one level

KChess

GerdIsenberg — Tue, 02 Jan 2018 10:15:30 GMT

Home * Engines * KChess

		KChess, a family of commercial chess programs written by Rob McDonell in Delphi, market by his software development business company Ark Angles ^[1] . In the early 90s KChess' development was inspired by Kaare Danielsen's Turbo Chess program, and the KChess engine is still largely Turbo Chess with some code improvements ^[2]. KChess has its own GUI to run under Windows, KChess Advance ^[3] and specially the more sophisticated KChess Elite ^[4] focus on educational features and are suited for use with screen reader software for the blind or visually impaired ^[5] .
KChess Elite ^[6]

Forum Posts

1998 ...

Supporting PGN, EPD and FEN by Rob McDonell, rgcc, June 14, 1998
Kchess - any good? by Jim Gross, rgcc, October 15, 1999

2000 ...

K-Chess Elite 3.5.0.4 by PMG, rgcc, March 11 2000
What is the engine in Kchess Elite? by Martin Grabriel, CCC, July 21, 2000
KCHESS Elite 32 (V3.6) by Kym, rgcc, June 27, 2002
KChess Elite version 4 will soon be available by Kym, rgcc, October 18, 2002
Chess companion by Quentin Grady, rgcc, May 25, 2009

2010 ...

K-Chess Elite 4 by Fernando, Hiarcs Forum, February 16, 2017
Some correspondence with Kaare Danielsen... by Fernando, Hiarcs Forum, February 17, 2017 » Turbo Chess
K-Chess Elite by Fernando, Hiarcs Forum, October 05, 2017

External Links

References

What links here?

Page	Date Edited
Engines	Mar 10, 2018
Kaare Danielsen	Feb 19, 2017
Kches6	Jan 2, 2018
KChess	Jan 2, 2018
NC3 1999	Jan 12, 2013
NC3 2000	Jan 13, 2013
NC3 2003	Jan 13, 2013
Rob McDonell	Oct 28, 2017
Turbo Chess	Feb 19, 2017

Up one level

Lion

GerdIsenberg — Tue, 27 Sep 2016 21:21:06 GMT

Home * Engines * Lion

		Lion, (Lion++) a multi-processor chess engine by primary author Giancarlo Delli Colli, initially written in Java and later ported to C++ based on the source code of Fruit. Lion participated at the CCC 2005 in Bologna and the WCCC 2006 in Turin. At the WCCC, after five rounds were played and a protest was filed by a participant, Yngvi Björnsson and independently Jonathan Schaeffer inspected Lion's source code and found it a close derivative of Fabien Letouzey’s program Fruit, which would have been acceptable if this had been revealed, credit given, and permission received before entering ^[1]. The Lion authors did not deny, and provided their own interpretation of rules since they had included a file crediting the effort by Fabien Letouzey, albeit invisible for other people ^[2]. Lion++ 1.5 was disqualified according to rule 2 ^[3]. The controversial term 'application detail' was later amended by the ICGA and made explicit as 'submission details' as part of rule 2 ^[4].
Lion Melon Carving ^[5]

Forum Posts

Re: Christmas Engine Quiz by Christopher Conkie, Winboard Forum, December 18, 2008
Cipollino / Equinox / LION by Giancarlo Delli Carlo by Norbert Raimund Leisner, CCC, May 28, 2009
Message from the Equinox author by Graham Banks, CCC, March 05, 2013

External Links

Chess Engine

Misc

References

^ Computer Chess – a conversation, May 30. 2006
^ Jaap van den Herik (2006). The Interpretation of Rules. Editorial, ICGA Journal, Vol. 29, No. 2, pdf
^ Lion's ICGA Tournaments
^ WCCC Rules (ICGA Tournaments), June 11-18, 2007
^ Watermelon, Watermelon! by Chris Galvin, July 9, 2012

What links here?

Page	Date Edited
Alexander Schmidt	May 17, 2016
BigLion	Sep 28, 2016
CCC 2005	Feb 27, 2014
Cipollino	Jul 11, 2017
Engines	Mar 10, 2018
Equinox	Dec 12, 2016
Fruit	Sep 27, 2016
Giancarlo Delli Colli	Jun 27, 2017
Historical Examples	Jan 16, 2017
ICGA Tournament Rules	Feb 22, 2014
Jaap van den Herik	Sep 18, 2017
Lion	Sep 27, 2016
WCCC 2006	Jan 28, 2018

Up one level

Phoenix (Rahul)

GerdIsenberg — Thu, 31 Mar 2016 11:03:20 GMT

Home * Engines * Phoenix (Rahul)

Phoenix,
an UCI compliant Java chess engine and masters thesis program by Rahul A. R., which is basically a modified CuckooChess by Peter Österlund. Ten piece-square tables, for all six piece types of the opening phase, plus four piece types (no rook and queen) of the endgame, that is a vector of 640 values is interpreted as chromosome to be trained by a genetic algorithm approach. After 1000 games ^[1], the modified engine Phoenix apparently outperformed its parent CuckooChess with a rating of 2546 (an increase of 19 points) ^[2]. After investigations by the original CuckooChess author, he found Phoenix played all games with White! Further, by using the published piece-square tables, Peter Österlund found the modified version around 400 elo weaker than the original ^[3].

Namesake

Publications

^[4]

Rahul A. R. (2014). Phoenix : A Self Learning Chess Engine. for the Award of M. Tech in Information Technology, International Institute of Information Technology, Bangalore, Bangalore, advisor G. Srinivasaraghavan, pdf ^[5]
Rahul A. R., G. Srinivasaraghavan (2016). Phoenix: A Self-Optimizing Chess Engine. arXiv:1603.09051

Forum Posts

PHOENIX=CuckooChess with learning function in Falcon style ! by Ruxy Sylwyka, CCC, February 26, 2015
Re: PHOENIX=CuckooChess with learning function in Falcon style by Peter Österlund, CCC, March 20, 2016

External Links

Chess Engine

Misc

References

^ A word for casual testers by Don Dailey, CCC, December 25, 2012
^ Phoenix: A Self-Learning Chess Engine - 4.3: Results
^ Re: PHOENIX=CuckooChess with learning function in Falcon style by Peter Österlund, CCC, March 20, 2016
^ phoenix/docs at master · rahular/phoenix · GitHub
^ Re: PHOENIX=CuckooChess with learning function in Falcon style by Peter Österlund, CCC, March 20, 2016

What links here?

Page	Date Edited
CuckooChess	Jan 17, 2017
Engines	Mar 10, 2018
Gopalakrishnan Srinivasaraghavan	Mar 31, 2016
Phoenix	May 8, 2017
Phoenix (Rahul)	Mar 31, 2016
Rahul A. R.	Jan 22, 2017

Up one level

Rybka

GerdIsenberg — Tue, 28 Mar 2017 06:50:34 GMT

Home * Engines * Rybka

		Rybka, a chess engine by primary author Vasik Rajlich, since 2007 dominating and reigning World Computer Chess Champion and holder of the Shannon Trophy, winning the WCCC 2007 ^[1] , WCCC 2008, WCCC 2009 and WCCC 2010, but in June 2011 disqualified by the ICGA from all previous and future World Computer Chess Championships ^[2] . Rybka further won various IPCCC, Dutch Open Computer Chess Championships, International CSVN Tournaments and on-line tournaments such as CCT Tournaments and ACCA Americas' Computer Chess Championships. Rybka is a standalone chess engine supporting the UCI protocol.
Rybka 4 Logo ^[3]

Pre-Beta Rybka and Crafty

Screenshots



ChessBase GUI, 3D boards with scoresheet and analysis board ^[4]

Deep Rybka 4 Aquarium by ChessOK ^[5]

Team

The Rybka team consists of primary author and International Master Vasik Rajlich, supported by Grandmaster and evaluation expert Larry Kaufman (Rybka 3), Rybka's main tester and Women's GM (WGM) and IM Iweta Rajlich, the opening book authors Jeroen Noomen, Dagh Nielsen, Jiří Dufek and Nick Carlin, as well as Rybka primary tournament operator Hans van der Zijden, hardware expert Lukas Cimiotti and Webmaster and Webdesigner Felix and Christoph Kling ^[6] .

Versions

Vasik Rajlich started developing Rybka in about 2003, and worked full-time on it since 2005. The appearance of the free Rybka 1 beta ^[7] ^[8] ^[9] and the first commercial version, Rybka 1 ^[10] end of 2005 was a sensation, and Rybka soon became the dominating program leading rating lists by a huge margin ^[11] ^[12] . Rybka 3 was developed in collaboration with Larry Kaufman, the most recent and strongest version Rybka 4 and the parallel version Deep Rybka 4 appeared in April 2010, market as standalone chess engine from RybkaChess.com ^[13] , from ChessOK optional with the Aquarium GUI ^[14] , or from ChessBase packaged with the Fritz GUI ^[15] . The demo version Rybka 2.3.2a can be downloaded for free ^[16] .

Achievements

^[17]

Year	Tournament	Rank/From	Title/Remarks
2004	CCT6	50/54
2005	IPCCC 2005 b	1/12
2006	CCT8	1/38
	ICT 2006	1
	WCCC 2006	3/18	as Rajlich, disqualified 2011
	DOCCC 2006	1
	IPCCC 2006	1/10
2007	ACCA 2007	1/16
	CCT9	1/54
	ICT 2007	1
	WCCC 2007	1/12	World Computer Chess Champion, disqualified 2011
	DOCCC 2007	1/14
	IPCCC 2007	2/10
2008	ACCA 2008	1/18
	ICT 2008	1
	WCCC 2008	1/10	World Computer Chess Champion, disqualified 2011
	DOCCC 2008	1/10
2009	ACCA 2009	1/12
	WCCC 2009	1/10	World Computer Chess Champion, disqualified 2011
	DOCCC 2009	1/9
2010	ICT 2010	1/14
	WCCC 2010	1/10	World Computer Chess Champion, disqualified 2011
	DOCCC 2010	1/20
2012	ICT 2012	1/8

Program Internals

Rybka is a bitboard engine, first versions rotated, Rybka 4 apparently magic bitboards for sliding piece attack and move generation. Vasik once posted a snippet of Rybka source-code, a typical bitboard serialization loop to generate white knight captures ^[18] .

for (bb_t knights = Board.pieces [WN]; knights; knights &= knights-1)
{
    int knight_sq = bit_scan (knights);
    for (bb_t captures = knight_moves [knight_sq] & opponent_pieces; captures; captures &= captures - 1)
    {
        int capture_sq = bit_scan (captures);
        *moves ++ = move (knight_sq, capture_sq);
        *values++ = Board.sq [capture_sq] * 256 + 192;
    }
}

Due to the disputed open source engines Strelka 2.0 and later Ippolit, which accordant to Vasik Rajlich were both based on or heavily influenced by re-engineered Rybka executables ^[19] ^[20] , other implementation details were released to the public, such as material- and material imbalance tables, aggressive LMR, razoring ^[21] and some variation of singular extensions ^[22] . Zach Wegner elaborated on evaluation issues, and compared Rybka 1 beta with Fruit's evaluation ^[23] ^[24] , continued by former anonymous author "BB+" alias Mark Watkins in February 2011 ^[25] .

Release Dates

Rybka 1.0 beta : 2005-12
Rybka 1.0 :
Rybka 1.1 : 2006-04
Rybka 1.2 : 2006-06
Rybka 1.5 :
Rybka 1.6.1 :
Rybka 2.0 :
Rybka 2.2 : 2006
Rybka 2.2n2 : 2006-12
Rybka 2.3 : 2007-01
Rybka 2.3.1 : 2007-02
Rybka 2.3.2a : 2007-06
Rybka 3 : 2008-08
Rybka 4 : 2010-05
Rybka 4.1 : 2011-3

Controversies

Rybka 1.0 and Fruit

Rajlich's interpretation of nodes and depth ^[26] ^[27] ^[28] ^[29] ^[30] , and the controversy about Strelka ^[31] ^[32] raised suspicions about the initial origin of Rybka 1.0 ^[33] ^[34] , but Vasik Rajlich categorically denied Rybka 1.0 was based on Fruit ^[35] ^[36] , as mentioned by Chrilly Donninger in 2005 ^[37] after early rumors ^[38] and questions ^[39] arose.

Vasik Rajlich's most quoted statement in these discussions was probably from an interview in uciengines.de, December 20, 2005 ^[40] :

Yes, the publication of Fruit 2.1 was huge. Look at how many engines took a massive jump in its wake: Rybka, Hiarcs, Fritz, Zappa, Spike, List, and so on. I went through the Fruit 2.1 source code forwards and backwards and took many things.
...
Anyway, if I really had to give a number - my wild guess is that Rybka would be 20 rating points weaker had Fruit not appeared.

Ippolit

The appearance of the Ippolit open source program by pseudonymous authors in May 2009, and Rajlich's claim it is a clone of Rybka 3 ^[41] without any substantiation and evidence, caused further discussions ^[42] .

Open Letters

In January 2011, Fabien Letouzey confirmed that Strelka, the allegedly clone of Rybka, was not a verbatim copy of the source code from Fruit, but a bitboard re-write of Fruit with some other ideas, and not just an extraction of a couple of ideas ^[43] ^[44] ^[45] .

On February 19, 2011 ICGA president David Levy broached on cloning issues in a ChessVibes column ^[46] . In March 2011, following computer chess programmers signed an open letter to David Levy, Jaap van den Herik and the board of the ICGA, to support the claim Rybka 1.0 beta and subsequent versions were allegedly derivatives from Fabien Letouzey’s program Fruit 2.1:

The letter was published in the private ICGA Investigations Wiki ^[49] and elsewhere ^[50] ^[51] ^[52] . The German sites Heise online ^[53] and Spiegel Online broached the issue ^[54] .

Pre-Beta Rybka and Crafty

In February and March 2011, evidence was found by Zach Wegner and Mark Watkins that pre-Beta Rybka, which played the CCT6 in January 2004, and competed in tournaments of Engine Rating Lists such as ChessWar ^[55] ^[56] and Le Fou numérique ^[57] , contain a substantial amount of Crafty code ^[58] , confirmed by Robert Hyatt ^[59] ^[60] . Beside other evidence there are the known bugs in the old Crafty code (if ms == 99999) ^[61] that caused El Chinito by primary author Eugenio Castillo Jiménez to be exposed as a clone ^[62] ^[63] .

Disqualification

In June 2011, the ICGA has disqualified and banned Rybka and its programmer Vasik Rajlich from previous and future World Computer Chess Championships. The ICGA accuses Rajlich of plagiarizing two other programs, Crafty and Fruit, and demands that he returns the trophies and prize money of the World Computer Chess Championships in 2007, 2008, 2009 and 2010 ^[64] .

In August 2011, the board of the Dutch Computer Chess Federation (CSVN) declared the most serious doubts as to the rightfulness of ICGA's decision. Therefore, they have chosen not to abide by their sanctions against Rybka ^[65] , see ICGA Investigations

Publications

Jeroen Noomen, Jos Uiterwijk, Jaap van den Herik (2007). The 15th World Computer Chess Championship. ICGA Journal, Vol. 30, No. 2 » WCCC 2007
Matej Guid, Ivan Bratko (2007). Factors affecting diminishing returns for searching deeper. CGW 2007 » Crafty, Rybka, Shredder, Diminishing Returns
Matej Guid, Ivan Bratko (2007). Factors affecting diminishing returns for searching deeper. ICGA Journal, Vol. 30, No. 2, pdf
Hans Secelle. Eric van Reem (2007). Golden Summer for RYBKA. ICGA Journal, Vol. 30, No. 3
Mark Watkins (2010). A comparison of Rybka and IPPOLIT. pdf ^[66] » Ippolit
Mark Watkins (2011). A comparison of Rybka 1.0 Beta and Fruit 2.1, pdf, February 12, 2011 Version ^[67]
Mark Watkins (2011). A comparison of Rybka 1.0 Beta and Fruit 2.1, pdf, February 24, 2011 Version
Mark Watkins (2011). A comparison of Rybka 1.0 Beta and Fruit 2.1, pdf, March 11, 2011 Version » Fruit
Anthony Cozzie (2011). The Future of Computer Chess. Selective Search 154, pp. 11, pdf hosted by Mike Watters
Jaap van den Herik, Krzysztof Siewicz (2011). Open Source has a Price. ICGA Journal, Vol. 34, No. 2
David Levy (2011). Rybka Disqualified and Banned from World Computer Chess Championships.ICGA Journal, Vol. 34, No. 2
David Levy (2011). A Very Sad Case. ICGA Journal, Vol. 34, No. 2
Mark Lefler, Robert Hyatt, Harvey Williamson, ICGA panel (2011). Rybka Investigations and Survey of Findings for the ICGA. ICGA Journal, Vol. 34, No. 2
Eric Hallsworth (2011). Rybka disqualified and banned by ICGA from World Computer Chess Championships, Lifetime Ban for Vasik Rajlich. Selective Search 155, pp. 8, pdf hosted by Mike Watters
Mark Watkins (2011). Review of the Rybka case. pdf from OpenChess Forum ^[68]
Søren Riis (2012). A Gross Miscarriage of Justice in Computer Chess. pdf hosted by ChessBase
Arno Nickel (2012). Die schöne neue Welt der Schachengines. SCHACH 2,3,5,6 2012, pdf (German) ^[69]
Ed Schröder (2012). Rybka reloaded. pdf
Matej Guid, Ivan Bratko (2012). Detecting Fortresses in Chess. Elektrotehniški vestnik, Vol. 79, Nos. 1-2, pdf » Houdini
Mark Watkins (2013). Review of the Rybka case. pdf
Søren Riis (2014). What makes a chess program original? Revisiting the Rybka case. Entertainment Computing, Vol. 5, No. 3
Don Dailey, Adam Hair, Mark Watkins (2014). Move Similarity Analysis in Chess Programs. Entertainment Computing, Vol. 5, No. 3, preprint as pdf ^[70]
David Levy (2014). The RYBKA Case – Progress and Verdict. ICGA Journal, Vol. 37, No. 4 » Rybka Controversy

Forum Posts

2004

Re: CCT6: Rybka /Bodo ??? by Vasik Rajlich, CCC, January 27, 2004

2005

Rybka 1.0 beta release - need testers by Vasik Rajlich, CCC, November 30, 2005
Rybka 1.0 Announcement by Vasik Rajlich, CCC, December 05, 2005
Is Rybbka a fruit clone? by Ziad Haddad, CCC, December 06, 2005
Rybka - How much Fruit is inside? by Daniel Mehrmann, CCC, December 11, 2005
Rybka test position by K. Burcham, CCC, December 11, 2005 » Ktulu
Rybka uses PVS and not MTD(f). Its no Fruit-Clone by Chrilly Donninger, CCC, December 12, 2005
The Code for the Rybka-Mate-Bug by Chrilly Donninger, CCC, December 13, 2005
Unmasking the Secrets of Rybka and Fruit by Stuart Cracraft, CCC, December 15, 2005
Secrets of Rybka and Fruit from my point of view by Sergei S. Markoff, CCC, December 15, 2005
Spike-Rybka by Vasik Rajlich, CCC, December 28, 2005 » IPCCC 2005 b
The man behind Rybka and his thoughts as posted here on CCC by Mike Byrne, CCC, December 31, 2005

2006

Rybka and Fruit on Chessbase by Walter Faxon, CCC, January 14, 2006 » Fruit, ChessBase
The superior Rybka chess knowledge by Chrilly Donninger, CCC, January 18, 2006
Rybka's NPS - one presumption by Vladan Vučković, CCC, February 16, 2006 » Nodes per second
Rybka @ CCT8 by Vasik Rajlich, CCC, February 26, 2006

2007

outlook and plans for Rybka 3 by Vasik Rajlich, Rybka Forum, January 09, 2007
Rybka 2.3 release date now Monday February 12 by Vasik Rajlich, Rybka Forum, February 04, 2007
Rybka 2.3 readme by Vasik Rajlich, Rybka Forum, February 13, 2007
Rybka @ Leiden ICT7 by Vasik Rajlich, Rybka Forum, May 20, 2007
Open Letter and $100,000 Challenge to FIDE by Vasik Rajlich, Rybka Forum, May 31, 2007
How secure is the source code of Rybka? by SR, Rybka Forum, June 05, 2007
Rybka 2.3.2a readme by Vasik Rajlich, Rybka Forum, June 18, 2007
Rybka @ Amsterdam 15th WCCC by Vasik Rajlich, Rybka Forum, June 19, 2007
Strelka = Rybka 1.0 by DarkAvenger, Rybka Forum, July 07, 2007 » Strelka
What Strelka tells about Rybka's nodecount and depth by Ernest Bonnem, CCC, July 09, 2007
Longer comments by V. Rajlich by Marc Lacrosse, CCC, July 10, 2007
Re: Is Rybka a derivative of Fruit? by Vasik Rajlich, Rybka Forum, July 14, 2007
Fruit, Rybka, Strelka final conclusion! (I hope) by Michael Sherwin, CCC, July 13, 2007
Rybka vs Zappa in Mexico City by Vasik Rajlich, Rybka Forum, September 28, 2007
Rybka @ Leiden 27th Dutch CCC by Vasik Rajlich, Rybka Forum, October 29, 2007

2008

Strelka 2.0 by Vasik Rajlich, Rybka Forum, January 11, 2008 » Strelka
Re: Strelka 2.0 pg 4 by Anthony Cozzie, Rybka Forum, January 11, 2008
Rajlich/Osipov/Rybka/Strelka/Answers by Convekta by Eduard Nemeth, CCC, January 17, 2008 » Strelka, Convekta
Anthony Cozzie speak ! by Silvian, Rybka Forum, February 03, 2008 ^[71]
Rybka 3 with new GUI: are they serious?! by Jouni Uski, CCC, April 05, 2008 » Aquarium
Retry: Rybka 1.0 Beta Node Count Patch by Rick Fadden, CCC, April 19, 2008
Strelka Reverse Engineered from Rybka: Details Examined by Rick Fadden, CCC, May 01, 2008
Rybka @ Leiden 8th ICT by Vasik Rajlich, Rybka Forum, June 01, 2008
Rybka 3 -- a hundred elo! by Larry Kaufman, Rybka Forum, July 08, 2008
Rybka 3 - some info by Vasik Rajlich, Rybka Forum, July 19, 2008
Rybka 3: The dark truth behind the hype by Albert Silver, CCC, July 25, 2008
Rybka 3 Release Notes by Vasik Rajlich, Rybka Forum, August 04, 2008
Rybka 3 FAQ by Vasik Rajlich, Rybka Forum, August 05, 2008
Rybka v2.2n2 download by Vasik Rajlich, Rybka Forum, August 06, 2008
Rybka 1.0 vs. Strelka by Zach Wegner, CCC, August 19, 2008
Questions for Vas by Zach Wegner, CCC, August 25, 2008
A very simple question to Vas that can end it all by Christophe Théron, CCC, August 25, 2008
Rybka questions and answers by Chris Whittington, CCC, August 25, 2008
question to vas on similarity of rybka 1.0 to fruit by duncan, Rybka Forum, August 25, 2008
split 3 from Zach technical thread by Christophe Théron, CCC, August 27, 2008
My two cents by Anthony Cozzie, CCC, August 27, 2008
To campaign or not by Ed Schroder, CCC, August 28, 2008
How a court detects a derivative work by Christophe Théron, CCC, August 30, 2008
Is It Me or is the Source Comparison Page Rigged? by RegicideX, CCC, September 01, 2008 ^[72] ^[73]
Plagiarism and Rybka by Enrique Irazoqui, CCC, September 03, 2008
Rybka @ 16th WCCC in Beijing by Vasik Rajlich, Rybka Forum, October 04, 2008
Strelka = Rybka 1.0 =Fruit 2.1 = Toga?? Oh how disappointing by Oliver Brausch, CCC, October 21, 2008
Rybka @ 28th Dutch CCC by Vasik Rajlich, Rybka Forum, November 18, 2008

2009

Rybka @ Pamplona 17th ICGA World Computer Chess Championship by Vasik Rajlich from Rybka Forum, May 17, 2009 » WCCC 2009
Rybka @ 29th Open Dutch Computer Chess Championship by Vasik Rajlich, Rybka Forum, October 19, 2009 » DOCCC 2009
Official statement on [Deleted]? by Vasik Rajlich, Rybka Forum, October 21, 2009

2010

Rybka 4 update by Vasik Rajlich, Rybka Forum, April 11, 2010
Rybka 4 is final. (select games for fun) by Albert Silver, CCC, May 25, 2010
Rybka 4 Release Notes by Vasik Rajlich, Rybka Forum, May 26, 2010
ICT Leiden 2010: Rybka wins with 8/9. Opening report by Jeroen Noomen, Rybka Forum, May 30, 2010 » ICT 2010
Rybka @ 10th ICT Leiden 2010 by Vasik Rajlich, Rybka Forum, May 31, 2010 » ICT 2010
BB's Rybka/Ippolit comparison by Zach Wegner, OpenChess Forum, June 13, 2010
Deep Blue vs Rybka by Don Dailey, CCC, September 13, 2010
Kanazawa Diary (Rybka operator in Japan) by Hans van der Zijden, Rybka Forum, September 24, 2010 » WCCC 2010
WCCC 2010 in Kanzawa, Japan by Vasik Rajlich, Rybka Forum, October 2, 2010 » WCCC 2010
Rybka @ 30th Dutch Computer Chess Championship by Vasik Rajlich, Rybka Forum, November 16, 2010 » DOCCC 2010
Brief Q&A about Rybka 1.0 Beta and Fruit 2.1 by BB+, OpenChess Forum, December 14, 2010
Rybka Cluster Rental Program by Vasik Rajlich, Rybka Forum, December 30, 2010

2011

Node counting by BB+, OpenChess Forum, January 20, 2011 » Node
Fabien's open letter to the community by Tord Romstad, CCC, January 23, 2011
Fabien's open letter to the community by Tord Romstad, OpenChess Forum, January 23, 2011
Revisiting Strelka/Rybka by BB+, OpenChess Forum, January 25, 2011
Feb 12 version: Rybka 1.0 Beta / Fruit 2.1 document by BB+, OpenChess Forum, February 12, 2011
Attack of the clones | ChessVibes by David Levy, 19 February, 2011
Programmers write open letter about Rybka-Fruit issue | ChessVibes by Peter Doggers, March 01, 2011
Open letter to the ICGA about the Rybka-Fruit issue by Harvey Williamson, Hiarcs Forum, March 01, 2011
Programmers Open Letter to ICGA on Rybka/Fruit by BB+, OpenChess Forum, March 01, 2011
Rybka 1.6.1 by Robert Hyatt, Rybka Forum, March 13, 2011
Longer Article by Anthony Cozzie, CCC, March 17, 2011
History of eval changes in Rybka versions byBB+, OpenChess Forum, March 23, 2011
Rybka disqualified and banned from World Computer Chess Cham by Tim Chan, CCC, June 29, 2011
Rybka disqualified and banned from World Computer Chess Cham by TheHug, Rybka Forum, June 29, 2011
Rybka disqualified and banned from WCCC by Harvey Williamson, Hiarcs Forum, June 29, 2011
Rybka disqualified and banned from WCCC by Jeremy Bernstein, OpenChess Forum, June 29, 2011
Rybka ban thoughts by Dann Corbit, CCC, June 29, 2011
My two cents on Rybka's disqualification by Joona Kiiski, CCC, June 30, 2011
Dismissed with prejudice by Dann Corbit, CCC, July 01, 2011
Voir Dire by Dann Corbit, CCC, July 01, 2011 ^[74]
Vas say something by siam, Rybka Forum, July 01, 2011
The ICGA Process by BB+, OpenChess Forum, July 01, 2011
Progess (often) is ugly, a summary try by Rebel, OpenChess Forum, July 03, 2011
Is Rybka that needs ICGA or the opposite ? by Marco Costalba, CCC, July 03, 2011
The Intellectual Property Oxymoron by Gary Belton, CCC, July 03, 2011
The Evidence against Rybka by BB+, OpenChess Forum, July 04, 2011
Why did the ICGA ignore this advice? by John Sidles, Rybka Forum, July 06, 2011
Minority Report Plagiarism - Quantifying Evaluation Features by Trotsky, Rybka Forum, July 09, 2011
Back to R3/IPPOLIT(/R4?) by BB+, OpenChess Forum, July 14, 2011
In retrospect by Rebel, Rybka Forum, July 14, 2011
Minority Report 2 - Unravelling the technical report by Trotsky, Rybka Forum, July 22, 2011
Minority Report 3, PST + other lookup tables are they legal? by Trotsky, Rybka Forum, July 25, 2011
Thoughts on Fruit=Rybka EVAL by Rebel, OpenChess Forum, August 16, 2011
Apology to Vas by Rebel, Rybka Forum, August 17, 2011

2012

Rybka evidence recapitulation by BB+, OpenChess Forum, January 03, 2012
A Big Thanks and a Small Update by Vasik Rajlich, Rybka Forum, January 08, 2012
Fruit/Rybka timeline by BB+, OpenChess Forum, January 09, 2012
Rybka 1.0 source code by Ed Schröder, CCC, January 31, 2012 ^[75]

External Links

Rybka

Rybka from Wikipedia
Rybka (disambiguation) from Wikipedia
Rybka's ICGA Tournaments
Welcome to RybkaChess.com!
Rybka Chess Community Forum
Rybka Cluster - for the elite chess player
Interview with Vasik Rajlich by Christopher Conkie, Michael Diosi, Frank Quisinsky & Alexander Schmidt, December 20, 2005, hosted by Ed Schröder
ChessAssistance.com Rybka Review by Robert Pawlak, September 23, 2006
Interview with IM Vasik Rajlich, author of Rybka chess program Written by content team 24 July 2007 from LatestChess.com
Rybka Explained? by John L. Jerz
Does Rybka Properly Count Positions Evaluated? by John L. Jerz
The chess program Rybka as a Rational Agent by John L. Jerz
Rybka 3.0 – Not just the strongest chess program in the world, July 18, 2008, ChessBase News
Anthony Cozzie speaks about Rybka source code from Steve Lim / SuperSteve3d - Home, February 04, 2008 » Anthony Cozzie, Strelka ^[76]
Rybka's Monte Carlo analysis by Steve Lopez, ChessBase News, February 03, 2009
Rybka doch nicht unbesiegbar, Neues Deutschland, June 26, 2010 (German)

Controversy

Attack of the clones | ChessVibes by David Levy, 19 February, 2011
Schach-Software Rybka - Programmierer vermuten Intelligenzklau by Frank Patalong, Spiegel Online, March 03, 2011 (German)
Plagiatsvorwurf gegen Computerschach-Weltmeister, Heise online, March 01, 2011 (German)
Rybka disqualified and banned from World Computer Chess Championships | ChessVibes by Peter Doggers, June 29, 2011
Susan Polgar Chess Daily News and Information: Breaking News! Rybka banned!, June 29, 2011
Rybka disqualified and banned from World Computer Chess Championships - Chess Weekly
Rybka banned by International Games Federation – Rybka Ruling
Rybka, the world’s best chess engine, outlawed and disqualified | ExtremeTech by Sebastian Anthony on June 29, 2011
Computer chess champ stripped of its four titles by Claire Courchane, Washington Times, June 30, 2011
Rybka Disqualified, Banned On Plagiarism Charges | ITProPortal.com by Ravi Mandalia, June 30, 2011
Boylston Chess Club Weblog: Rybka banned from computer champs; stripped of all its titles, June 30, 2011
Computer chess reels from 'biggest sporting scandal since Ben Johnson' | Metro.co.uk by Tariq Tahir, June 30th, 2011
Schachcomputer-Weltmeister nachträglich disqualifiziert, Heise online, June 30, 2011 (German)
Weltmeisterprogramm Rybka verliert alle Titel by Frank Patalong, Spiegel Online, July 01, 2011 (German)
Developer of Computer Chess Champ Accused of Stealing Code by Dylan Loeb McClain, NYTimes.com, July 2, 2011
Geklontes Fischchen by Stefan Löffler, July 08, 2011, DiePresse.com (German)
Rybka and the ICGA, CSVN Computerschaak
Rybka vs ICGA a different view by Ed Schröder, November 09, 2011
Rybka evidence by Ed Schröder, November 09, 2011
A Gross Miscarriage of Justice in Computer Chess (part one) by Søren Riis, ChessBase News, January 02, 2012 ^[77] ^[78] ^[79]
A Gross Miscarriage of Justice in Computer Chess (part two) by Søren Riis, ChessBase News, January 03, 2012 ^[80]
A Gross Miscarriage of Justice in Computer Chess (part three) by Søren Riis, ChessBase News, January 04, 2012
A Gross Miscarriage of Justice in Computer Chess (part four) by Søren Riis, ChessBase News, January 05, 2012 ^[81]
Controversy over Rybka's disqualification and ban (UPDATE) | ChessVibes by Peter Doggers, January 08, 2012
ICGA/Rybka controversy: An interview with David Levy (1), ChessBase News, February 06, 2012
ICGA/Rybka controversy: An interview with David Levy (2), ChessBase News, February 10, 2012
ICGA/Rybka controversy: Feedback, ChessBase News, February 17, 2012

References

^ Bulletin Day 7 WCCC 2007 (ICGA Tournaments)
^
- Rybka disqualified and banned from World Computer Chess Championships | ChessVibes by Peter Doggers, June 29, 2011
^ Rybka - for the serious chess player - Purchase Rybka
^ Rybka 4 is here – and stronger than ever, ChessBase News, May 31, 2010
^ ChessOK, Chess Shop from the Developers of Rybka 3 Aquarium
^ Rybka - for the serious chess player - Rybka team
^ Rybka 1.0 beta release - need testers by Vasik Rajlich, CCC, November 30, 2005
^ Rybka Beta 1.0 - Chess.com
^ New Chess Engine - Rybka v 1.0 Beta Readme, Dec 4, 2005
^ Rybka 1.0 Announcement by Vasik Rajlich, CCC, December 05, 2005
^ The SSDF Rating List
^ CEGT Quad Versions 40/120 (AMD 3500+/4200+)
^ Rybka - for the serious chess player - Purchase Rybka
^ Rybka & Aquarium - ChessOK shop
^ Chess software - Rybka 4 from ChessBase
^ Rybka - for the serious chess player - Download Rybka 2.3.2a
^ Rybka disqualified and banned from World Computer Chess Championships | ChessVibes by Peter Doggers, June 29, 2011
^ re: rybka source code by Vasik Rajlich, Rybka Forum, July 24, 2007
^ Strelka 2.0 by Vasik Rajlich, Rybka Forum, January 11, 2008
^ My recent correspondence with Vasik Rajlich by Sven Schüle, CCC, June 13, 2010
^ Re: Strelka 2.0 pg 4 by Anthony Cozzie, Rybka Forum, January 11, 2008
^ A question to Larry Kaufman, by Erik, Rybka Forum, December 30/31, 2009
^ Rybka/Fruit: evaluation by Zach Wegner
^ Re: What do you folks make of this ? by Chris Whittington, OpenChess Forum, June 27, 2010
^ Mark Watkins (2011). A comparison of Rybka 1.0 Beta and Fruit 2.1, pdf, February 24, 2011 Version
^ What Strelka tells about Rybka's nodecount and depth by Ernest Bonnem, CCC, July 09, 2007
^ Does Rybka Properly Count Positions Evaluated? by John L. Jerz
^ To Jeroen and interested minds, re. Tiger node count by Christophe Théron, CCC, August 15, 2008
^ Re: Question to Larry Kaufman about Rybka by Larry Kaufman, CCC, February 05, 2010
^ Node counting by BB+, OpenChess Forum, January 20, 2011
^ Strelka = Rybka 1.0 by DarkAvenger, Rybka Forum, July 07, 2007
^ Strelka 2.0 by Vasik Rajlich, Rybka Forum, January 11, 2008
^ Rybka 1.0 vs. Strelka by Zach Wegner, CCC, August 19, 2008
^ Questions for Vas by Zach Wegner, CCC, August 25, 2008
^ Re: Is Rybka a derivative of Fruit? by Vasik Rajlich, Rybka Forum, July 14, 2007
^ question to vas on similarity of rybka 1.0 to fruit by duncan, Rybka Forum, August 25, 2008
^ Rybka uses PVS and not MTD(f). Its no Fruit-Clone by Chrilly Donninger, CCC, December 12, 2005
^ Is Rybbka a fruit clone? by Ziad Haddad, CCC, December 06, 2005
^ Rybka - How much Fruit is inside? by Daniel Mehrmann, CCC, December 11, 2005
^ Interview with Vasik Rajlich by Christopher Conkie, Michael Diosi, Frank Quisinsky & Alexander Schmidt, December 20, 2005, hosted by Ed Schröder
^ Official statement on [Deleted]? by Vasik Rajlich, Rybka Forum, October 21, 2009
^ I'm in doubt if RobboLito is a clone by Volker Pittlik, CCC, October 24, 2009
^ Fabien's open letter to the community by Tord Romstad, CCC, January 23, 2011
^ Fabien's open letter to the community by Tord Romstad, OpenChess Forum, January 23, 2011
^ The Chess Mind Blog - More Computer Chess Controversy
^ Attack of the clones | ChessVibes by David Levy, 19 February, 2011
^ In retrospect by Rebel, Rybka Forum, July 14, 2011
^ Apology to Vas by Rebel, Rybka Forum, August 17, 2011
^ ICGA Investigations Wiki
^ Programmers write open letter about Rybka-Fruit issue : ChessVibes by Peter Doggers, March 01, 2011
^ Open letter to the ICGA about the Rybka-Fruit issue by Harvey Williamson, Hiarcs Forum, March 01, 2011
^ Programmers Open Letter to ICGA on Rybka/Fruit by BB+, OpenChess Forum, March 01, 2011
^ Plagiatsvorwurf gegen Computerschach-Weltmeister, Heise online, March 01, 2011 (German)
^ Schach-Software Rybka - Programmierer vermuten Intelligenzklau by Frank Patalong, Spiegel Online, March 03, 2011 (German)
^ RYBKA 1.6.1 in Chess War V-VII
^ Re: Programmers Open Letter to ICGA on Rybka/Fruit by Olivier Deville, Openchess Forum, March 05, 2011
^ Le Fou numérique - Le Système du Suisse 3 - T
^ Re: Programmers Open Letter to ICGA on Rybka/Fruit by BB+, OpenChess Forum, March 05, 2011
^ Re: Programmers Open Letter to ICGA on Rybka/Fruit by Robert Hyatt, Openchess Forum, March 05, 2011
^ Rybka 1.6.1 by Robert Hyatt, Rybka Forum, March 13, 2011
^ Re: Programmers Open Letter to ICGA on Rybka/Fruit byBB+, OpenChess Forum, March 04, 2011
^ Re: Correction: List and ElChinito as Crafty clones, ... etc by Paul H, CCC, August 21, 2004
^ Open letter by Eugenio Castillo (ELChinito team) ... by Frank Quisinsky, CCC, August 28, 2004
^ Rybka disqualified and banned from World Computer Chess Championships | ChessVibes by Peter Doggers, June 29, 2011
^ Rybka and the ICGA, CSVN Computerschaak
^ BB's Rybka/Ippolit comparison by Zach Wegner, OpenChess Forum, June 13, 2010
^ Feb 12 version: Rybka 1.0 Beta / Fruit 2.1 document by BB+, OpenChess Forum, February 12, 2011
^ Rybka evidence recapitulation by BB+, OpenChess Forum, January 03, 2012
^ Part 1 covers Houdini, Rybka, Komodo, Stockfish, Critter, Naum, Chiron and Spike
^ A Pairwise Comparison of Chess Engine Move Selections by Adam Hair, hosted by Ed Schröder
^ Anthony Cozzie speaks about Rybka source code from Steve Lim / SuperSteve3d - Home, February 04, 2008
^ Why did the ICGA ignore this advice? by John Sidles, Rybka Forum, July 06, 2011
^ Re: A Big Thanks and a Small Update by John Sidles, Rybka Forum, January, 08, 2012
^ Voir dire from Wikipedia
^ Fruit 2.1 and Rybka 1.0 Beta 1.0 decompiled source code by Ed Schröder
^ Anthony Cozzie speak ! by Silvian, Rybka Forum, February 03, 2008
^ ChessBase: A Gross Miscarriage of Justice in Computer Chess by kingliveson, OpenChess Forum, January 02, 2012
^ Re: ChessBase: A Gross Miscarriage of Justice in Computer Chess by BB+, OpenChess Forum, January 02, 2012
^ Re: Hyatt Is Gone! by BB+ OpenChess Forum, Jan 03, 2012
^ Rybka evidence recapitulation by BB+, OpenChess Forum, January 03, 2012
^ Søren Riis (2012). A Gross Miscarriage of Justice in Computer Chess. pdf hosted by ChessBase

What links here?

Page	Date Edited
14th Computer Olympiad	Jul 23, 2017
ACCA 2007	Jul 14, 2014
ACCA 2008	Jul 14, 2014
ACCA 2009	Jul 14, 2014
ACCA Americas' Computer Chess Championship	Nov 20, 2014
ACCA World Computer Rapid Chess Championship	Jun 27, 2017
Albert Silver	Feb 25, 2018
Alessandro Scotti	Feb 27, 2014
Alexander Schmidt	May 17, 2016
Almond	Feb 14, 2012
Alon Greenfeld	Feb 24, 2017
Anthony Cozzie	Nov 5, 2016
Aquarium	Dec 4, 2016
Argonaut	Apr 15, 2013
Arno Nickel	Sep 25, 2015
Bodo	Oct 6, 2016
Bright	Oct 25, 2016
BugChess FR	Feb 24, 2013
CCT Tournaments	Jan 29, 2017
CCT10	May 5, 2013
CCT11	Feb 17, 2015
CCT6	May 29, 2014
CCT8	Apr 6, 2013
CCT9	Aug 25, 2013
CGW 2007	Jan 2, 2017
Chaturanga IT	Jan 7, 2016
Checkmate	Apr 13, 2018
Chess	Jan 21, 2018
Chess Assistant	Jul 16, 2017
Chess960CWC 2007	Aug 21, 2012
Chess960CWC 2008	Aug 21, 2012
Chess960CWC 2009	Aug 21, 2012
ChessBase	Nov 25, 2017
ChessOK	Jul 30, 2013
Chiron	Sep 24, 2017
Chris Whittington	Dec 9, 2017
Claims of Rybka Originality	May 17, 2016
Claims that Strelka is Rybka	Jun 6, 2012
Clones	Jan 16, 2017
Computer Chess Forums	Nov 26, 2017
Computer Olympiad	Mar 6, 2018
Crafty	Jan 28, 2018
Critter	Jan 25, 2014
Daniel Mehrmann	Dec 13, 2015
Dann Corbit	Dec 9, 2017
David Levy	Jan 3, 2017
Deep Fritz versus Deep Junior 2007	Oct 15, 2016
Deep Sjeng	Jan 7, 2016
Depth	Feb 25, 2018
DOCCC 2006	Aug 27, 2016
DOCCC 2007	Aug 15, 2015
DOCCC 2008	Aug 15, 2015
DOCCC 2009	Aug 15, 2015
DOCCC 2010	Aug 15, 2015
DOCCC 2011	Dec 1, 2013
Dutch Open Computer Chess Championship	Sep 25, 2014
Ed Schroder	Feb 26, 2018
Eduard Nemeth	Nov 22, 2014
Eigenmann Endgame Test	Jun 1, 2017
Engines	Mar 10, 2018
Eric van Reem	Sep 10, 2014
Ernest Bonnem	Jan 26, 2014
Fabien Rybka Letter	Feb 23, 2014
Fortress	Feb 1, 2018
Fritz	Feb 26, 2018
Fritz Reul	Nov 28, 2016
Fruit	Sep 27, 2016
GullChess	Jun 27, 2017
Hans Secelle	Nov 2, 2012
Hans van der Zijden	Dec 13, 2016
Harry Schnapp	Apr 11, 2013
Helmut Weigel	Dec 2, 2017
Hiarcs	Feb 25, 2018
Houdini	Apr 14, 2018
ICGA Journal	Dec 21, 2017
ICT 2006	Oct 14, 2015
ICT 2007	Sep 14, 2015
ICT 2008	Sep 14, 2015
ICT 2010	Sep 14, 2015
ICT 2012	Jun 11, 2012
Ikarus	Jul 5, 2016
International CSVN Tournament	Jan 8, 2018
IPCCC	Jan 20, 2017
IPCCC 2005 b	Apr 15, 2013
IPCCC 2006	Dec 8, 2012
IPCCC 2007	May 30, 2016
Ippolit	May 17, 2016
Ivan Bratko	Aug 16, 2017
Iweta Rajlich	Sep 23, 2017
Jeroen Noomen	Jul 21, 2017
Joel Veness	Dec 8, 2017
John L. Jerz	Jul 15, 2013
Jury Osipov	Jul 29, 2013
Kai Laskos	Jan 21, 2018
Karlo Bala Jr.	Feb 19, 2017
Knowledge	Jul 22, 2017
Komodo	Mar 6, 2018
Kramnik versus Deep Fritz 2006	Nov 28, 2017
Krzysztof Siewicz	Aug 9, 2014
Ktulu	May 16, 2015
Lance Perkins	Nov 10, 2011
Larry Kaufman	Jan 28, 2018
LearningLemming	Jun 29, 2013
Livingston Chess960 Computer World Championship	Aug 7, 2012
Loop (Program)	Mar 14, 2017
Marco Costalba	Feb 28, 2018
Mark Watkins	Dec 6, 2017
Martin Thoresen	Apr 29, 2015
Match Statistics	Mar 31, 2018
Matej Guid	Jan 6, 2018
Material Tables	May 5, 2017
Michael Sherwin	Dec 18, 2017
Milos Stanisavljevic	May 23, 2016
Monte-Carlo Tree Search	Apr 26, 2018
Naum	Nov 23, 2017
Nelson Hernandez	Nov 23, 2017
Node	Jul 20, 2015
Nodes per second	Feb 28, 2018
Norman Schmidt	Oct 12, 2017
Olivier Deville	Sep 29, 2016
Parallel Search	Dec 30, 2017
Piece-Square Tables	Mar 31, 2018
Playing Strength	Mar 31, 2018
Quantifying Evaluation features	Jun 6, 2012
Revelation	Jul 15, 2016
Revelation II	Jan 8, 2018
Robert W. Howard	Jul 1, 2014
Rolf Tüschen	Jun 6, 2012
Rondo	Jan 7, 2016
Rook on Open File	Apr 24, 2017
Ross Boyd	Mar 12, 2018
Ryan Benitez	May 16, 2015
Rybka	Mar 27, 2017
Rybka Controversy	Jan 18, 2018
Scaramanga	Mar 6, 2011
Score	Apr 14, 2018
Sergei Markoff	Mar 12, 2018
Shredder	Jan 21, 2018
Silent but deadly	Jun 17, 2015
Singular Extensions	Jan 9, 2018
Spark	Oct 19, 2017
SpiderChess	Oct 4, 2017
Spike	Jan 7, 2016
Stephan Oliver Platz	Dec 14, 2017
Steve Lopez	Dec 4, 2016
Stockfish	Apr 7, 2018
Strelka	May 17, 2016
Sunfish	Jan 11, 2018
Sven Schüle	Sep 20, 2016
Søren Riis	Jan 10, 2017
Tarrasch	Apr 15, 2017
TCEC	Apr 18, 2018
TCEC Season 10	Jan 3, 2018
TCEC Season 5	Jun 2, 2014
TCEC Season 6	Dec 2, 2014
TCEC Season 9	Nov 6, 2017
Test-Positions	Feb 25, 2018
Thinker	Jan 7, 2016
TRACE	Feb 14, 2013
Vadim Demichev	Jul 26, 2013
Vasik Rajlich	Sep 23, 2017
Victor Zakharov	May 20, 2016
WCCC 2006	Jan 28, 2018
WCCC 2007	Jan 2, 2017
WCCC 2008	Jan 3, 2017
WCCC 2009	Apr 2, 2017
WCCC 2010	Jan 6, 2017
WCRCC 2007	Nov 21, 2016
WCRCC 2008	Nov 21, 2016
WCRCC 2009	Jul 14, 2014
WCRCC 2010	Jul 14, 2014
Wieland Belka	Jul 13, 2013
Windows	Nov 2, 2017
World Computer Chess Championship	Mar 6, 2018
Zach Wegner	Jan 7, 2016
Zappa	Oct 24, 2017
Zappa versus Rybka 2007	Nov 25, 2017
Đorđe Vidanović	Feb 20, 2017

Up one Level

Smaug

GerdIsenberg — Thu, 08 Sep 2016 16:46:38 GMT

Home * Engines * Smaug

		Smaug, a chess engine by Joona Kiiski which was a slightly modified version of Glaurung 2.2 by Tord Romstad, announced in March 2009 ^[1]. Smaugh's patches were soon incorporated into another Glaurung derivative by Marco Costalba dubbed Stockfish ^[2] . Along with some emotional forum discussions on derivatives ^[3], Joona Kiiski became co-author of Stockfish, and Smaug 2.2.1. the one and only public release ^[4].
Tetramorium smaug ^[5]

Forum Posts

Smaug: a new chess engine based on glaurung by Joona Kiiski, CCC, March 12, 2009
Plague: a "new" chess engine based on Smaug by Christopher Conkie, CCC, March 16, 2009
Re: Plague: a "new" chess engine based on Smaug by Joona Kiiski, CCC, March 18, 2009
Trusted testers wanted by Volker Annuss, CCC, May 05, 2009

External Links

Chess Engine

Computer Chess Wiki - Engine Download List hosted by Ron Murawski
Index of /chess/engines/jim ablett/SMAUG by Jim Ablett, hosted by Kirill Kryukov

Misc

References

^ Smaug: a new chess engine based on glaurung by Joona Kiiski, CCC, March 12, 2009
^ Re: Smaug: a new chess engine based on glaurung by Marco Costalba, CCC, March 12, 2009
^ Plague: a "new" chess engine based on Smaug by Christopher Conkie, CCC, March 16, 2009
^ Re: Plague: a "new" chess engine based on Smaug by Joona Kiiski, CCC, March 18, 2009
^ Profile of Tetramorium smaug, Image by Shannon Hartman, June 26, 2012, Source: Closeup of the profile of Specimen CASENT0121244, AntWeb, CC BY 3.0, Wikimedia Commons, Tetramorium smaug from Wikipedia

What links here?

Page	Date Edited
Engines	Mar 10, 2018
Glaurung	Mar 14, 2017
Joona Kiiski	Aug 31, 2017
Smaug	Sep 8, 2016
Stockfish	Apr 7, 2018

Up one Level

Sting

GerdIsenberg — Fri, 16 Mar 2018 10:31:16 GMT

Home * Engines * Stockfish * Sting

		Sting, a Stockfish derivative by Marek Kwiatkowski with the aim to solve difficult positions such as zugzwangs, "longer" sacrifices, and to detect fortress positions. It was first released in December 2011 based on Stockfish 2.1.1 ^[1], so far until Sting 8.8 in October 2017 still based on that Stockfish version ^[2] ^[3] ^[4].
Yellowjacket sting ^[5]

Forum Posts

2011 ...

Sting 1.0 beta (based on Stockfish 1.8) by Marek Kwiatkowski, CCC, November 24, 2011
Sting SF 1.0 is out by Marek Kwiatkowski, CCC, December 08, 2011

2012

Sting SF 2.0 by Marek Kwiatkowski, CCC, May 13, 2012
Sting SF 2 is now available by Marek Kwiatkowski, CCC, June 11, 2012
Sting SF PV by Marek Kwiatkowski, CCC, July 13, 2012

2013

about Sting-sf-3 by Marek Kwiatkowski, CCC, March 21, 2013
sting-sf-3 release by Marek Kwiatkowski, CCC, April 22, 2013
Project Sting (4) by Marek Kwiatkowski, CCC, July 24, 2013

2014

Sting Sf 4.6 release by Marek Kwiatkowski, CCC, July 01, 2014
Sting Sf 4.7 release by Marek Kwiatkowski, CCC, July 31, 2014
Where is the diference? (about Sting project) by Marek Kwiatkowski, CCC, September 21, 2014

2015 ...

about next Sting by Marek Kwiatkowski, CCC, January 01, 2015
Sting-sf-48 release by Marek Kwiatkowski, CCC, January 29, 2015
Sting SF 4.8.1 release by Marek Kwiatkowski, CCC, January 30, 2015
Sting SF 4.8.2 release (64-bit too!) by Marek Kwiatkowski, CCC, February 06, 2015
Sting SF 4.8.3 release by Marek Kwiatkowski, CCC, February 12, 2015
Sting SF 4.8.4 correction by Marek Kwiatkowski, CCC, February 21, 2015
Sting-sf-5 release by Marek Kwiatkowski, CCC, April 04, 2015
A next task for Sting by Marek Kwiatkowski, CCC, April 18, 2015

2016

Sting-sf-6 a quasi-intelligent engine by Marek Kwiatkowski, CCC, January 08, 2016
sting sf 6.1 update by Marek Kwiatkowski, CCC, February 18, 2016
Stockfish Sting 6.1 for the Mac by Michael B, CCC, February 19, 2016
Sting SF 6.2 by Marek Kwiatkowski, CCC, February 23, 2016
Sting SF 6.3 by Marek Kwiatkowski, CCC, February 24, 2016
Sting - A fatal error in Hash code (Stockfish.2.1.1) by Marek Kwiatkowski, CCC, March 14, 2016
sting-sf-67 by Marek Kwiatkowski, CCC, March 31, 2016
sting-sf-7 release by Marek Kwiatkowski, CCC, July 18, 2016
Sting SF 7.1 by Marek Kwiatkowski, CCC, July 22, 2016
Sting SF 7.3 by Marek Kwiatkowski, CCC, August 31, 2016

2017

Sting-sf-8 by Marek Kwiatkowski, CCC, May 06, 2017
Sting SF 8.1 by Marek Kwiatkowski, CCC, May 10, 2017
Sting SF 8.5 by Marek Kwiatkowski, CCC, July 10, 2017
Sting SF 8.8 release by Marek Kwiatkowski, CCC, October 05, 2017
Sting SF 8.9 by Marek Kwiatkowski, CCC, October 17, 2017
Sting SF 9 Release by Marek Kwiatkowski, CCC, November 20, 2017
Sting SF 9.5 by Marek Kwiatkowski, CCC, December 30, 2017

2018

Sting SF 9.6 by Marek Kwiatkowski, CCC, January 06, 2018
Sting SF 9.8 update by Marek Kwiatkowski, CCC, February 16, 2018
Sting SF 9.9 update by Marek Kwiatkowski, CCC, March 09, 2018

External Links

Chess Engine

Index of /chess/engines/Jim Ablett/STING by Jim Ablett, hosted by Kirill Kryukov
Sting SF 4.8.4 64-bit 4CPU in CCRL 40/40

Misc

References

^ Sting SF 1.0 is out by Marek Kwiatkowski, CCC, December 08, 201
^ Sting SF 8.8 release by Marek Kwiatkowski, CCC, October 05, 2017
^ Dropbox - Stockfish 2
^ WinMerge
^ Yellowjacket sting in its sheath in the scanning electron microscope, Image by SecretDisc, July 24, 2007, CC BY-SA 3.0, Wikimedia Commons

What links here?

Page	Date Edited
Engines	Mar 10, 2018
Marek Kwiatkowski	Oct 22, 2017
Sting	Mar 16, 2018
Stockfish	Apr 7, 2018

Up one Level

Wikispaces : chessprogramming - items matching description

Belka

Table of Contents

See also

Forum Posts

External Links

Chess Engine

Misc

References

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Bionic Impakt

Table of Contents

DOCCC 1998

Forum Posts

External Links

References

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Bouquet

Table of Contents

Selected Games

Forum Posts

External Links

Chess Engine

Misc

References

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Cluster Toga

Table of Contents

Description

Photos & Games

IPCCC 2007

WCCC 2008

Authors

See also

Forum Posts

External Links

References

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Cyclone

Table of Contents

See also

Forum Posts

External Links

Chess Engine

Cyclone

References

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Defenchess

Table of Contents

Features

Board Representation

Search

Evaluation

Forum Posts

External Links

References

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Delphil

Table of Contents

See also

Forum Posts

2005 ...

2010 ...

2015 ...

External Links

References

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DON

Table of Contents

See also

Forum Posts

External Links

References

What links here?

Fire

Table of Contents

Fire 4

Fire 5, Fire 6.1

See also

Forum Posts