Chess engines

Last changes: October 16th, 2025 (11:45)
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go to end of site (Notes) .................. !! sorted: official release date

Obligation: Chess programming WIKI, RWBC chronology

Fora: CSS, Hiarcs, Schachcomputer.info, TalkChess - New - JA
Open-Bench-Test: T1, T2, T3, T4, T5, T6, T7, T8, T9-Clockwork
 Tourney: TCEC, Ratings: CCRL, CEGT, Chess324, IPman, SPCC, UBC

Some GUIs well-assorted in alphabetic order
Aquarium 2025, Arena 3.5.1, Banksia 0.58 RC1, BearChess 1.3.0.0, CB-Emu 250927, ChessMD 1.0,
 CuteChess 1.4.0, en-croissant 0.11.1, HIARCS Chess Explorer Pro 1.4, Jerry 4.3.0, LiGround 0.4.0,
LittleBlitzer 2.77, LucasChess R2.21-FP-7, Nibbler 2.5.2, Pawn-Appetit 0.7.3, Scid vs. PC 4.26,
Shredder GUI 13, Tarrasch 3.13b, Winboard 4.9.0

CB: Fritz 20 upd.05, Chessbase 18 upd.15
Tools: Norm's 40H Chess-Tools 250927, PGN-Extract 250108
Endgame: syzygy, others, Logos: Chess-Cache		 The Number 1 = Stockfish
 Reckless, PlentyChess, Obsidian
 are in the nearby!

175 out of 238 JA compiles = 73,53%
103 out of 238 Endgame = 43,28%
 085 out of 238 HCE = 35,72%
010 out of 238 JAVA = 4,21%
009 out of 238 xb = 3,79%
 006 out of 238 MCTS / PUCT = 2,53%
 007 out of 238 commercials = 2,95%

055 different flags
042 out of 238 from 1. usa = 17,65%
030 out of 238 from 2. germany = 12,61%

 

Most of the current TOP 222 available engines are included!
 Last 5 upd.: 1. Prune 1.0.1, 2. Petrel 2.1 HCE JA, 3. Princhess 0.21.0, 4. Pounce 3.0.0, 5. EveAnn 3.5 xb
Last 3 dev / Pre upd.: 1. PlentyChess 7.0.2 Pre, 2. Reckless 251012 JA dev, 3. Eubos 251010 JAVA dev

Well-assorted in alphabetic order
 October 16th, 2025 (07:00): D/L = 0,259Mb, this file with 310 Shredder GUI *.eng config examples
-

238 Engines Programmer(s) ... thank you! Date Version(s) 175 Jim Ablett Endgame Status
world 4ku ... the 4ku developers 24/04 5.1 (240829) / 5.1 JA REPO (240910) OSS *2
england Admete Kylie MacFarquharson 25/06 1.8.0 REPO *15 syzygy OSS
england Akimbo Jamie Whiting 24/03 1.0.0 / 241218 JA dev D/L OSS
england ² Monty MCTS, GitHub: D/L " 25/10 251008-8862d09e dev MCTS   "
usa Aku - archived Hoa T. Vu 25/07 250709 / 250709 JA D/L OSS
italy Alexandria, net Guiseppe Pagano 25/08 8.1.2 (250824) / 8.1.2 JA D/L OSS
china Altair Alexander Tian 24/02 7.0.0 / 7.2.1 JA dev D/L (250703) OSS
Altar Kim Kåhre 20/05 200521 Exp     OSS *2
france Amoeba Richard DELORME 21/12 3.4 / 3.4 JA REPO (231221)   OSS *2
france ² Dump " 25/03 2.3     OSS *2
andorra Andscacs (Wayback) Daniel José Queraltó 21/03 0.95198 free *2
andorra Andscacs, web (own site) " 21/01 0.1 NNSf *14 free
spain Anubis *18 José Carlos Martínez Galán 25/10 3.06 xb REPO *15 syzygy OSS
usa Arasan, GitHub Jon Dart 25/07 25.2 / 25.2 JA D/L syzygy OSS
norway Arcanum Lars Murud Aurud 25/07 2.6 REPO *15 syzygy OSS
austria Astra Semih Özalp 25/07 6.1.1 / 6.1.1 JA D/L syzygy OSS
germany Asymptote Maximilian Lupke 20/05 0.8   syzygy OSS *2
spain Atlas Andrés Manzanares 24/12 4.35   syzygy free *2
usa Aurora Cai Winston 25/01 1.26.0 MCTS REPO *15 syzygy OSS
china Avalanche Yinuo Huang 24/01 2.1.0 / 2.1.0 JA REPO (250718) OSS
norway Axiom Sindre Wolden 25/06 2.1.0   OSS
bulgaria Bagatur Krasimir Topchiyski 25/07 5.3 / 5.3 JA D/L syzygy OSS *1
france Belette Vincent BAB 24/03 3.0.0 REPO *15   OSS *2
usa Berserk, TC-83560 Jay Honnold 24/03 13 / 250622 CE dev D/L syzygy OSS
india Bit-Genie Aryan Parekh 21/08 9 / 9.24 JA dev D/L (250920)   OSS
sweden bitbit *16 Isak Ellmer 25/09 1.5 / 1.5 JA D/L OSS
turkey Black Marlin Doruk Şekercioğlu 24/02 9.0 / 250413 JA dev D/L OSS
hungary BlackCore, ² WhiteCore Balàzs Szilágyi 23/03 6.0 / 6.0 JA REPO (250721) syzygy OSS
usa Blunder Christian Dean 22/07 8.5.5 / 8.5.5 JA REPO (240111)   OSS *2
netherland Bobcat Gunnar Harms 16/11 8.0 JA REPO (241113)   OSS *2
netherland belgium Tomcat *25 Gunnar Harms, Norman Schmidt 20/02 1.0 JA D/L (250716)   OSS *2
ukraine Booot Alex Morozov 25/02 7.4 OSS
usa Cadie Martin Wyngaarden 25/03 2.1 / 2.1 JA D/L OSS *2
poland Caissa Michal Witanowski 25/08 1.23 / 1.23 JA D/L syzygy OSS
netherland Calvin, ² Hobbes Dan Kelsey 25/06 6.1.1 / 6.1.1 JA D/L OSS *1
italy Carp Andrea Sgobbi 23/09 3.0.1 / 3.0.1 JA dev2 D/L (250928) OSS
argentina Ceibo Federico Rojo 23/12 1.0   syzygy free
england Celeris, RWBC Hin-Yu-Evan Fung 25/07 2.0 / 2.0 JA / 2.0 GS D/L   OSS
india ChandraChess Aditya Chandra 24/11 2.0 REPO *15   OSS
austria Cheers Sebastian Venter 24/10 1.0.0 / 1.0.0 JA D/L syzygy OSS *2
france Cheese, GitLab Patrick DUHAMEL 25/08 3.3.2 REPO *15 syzygy OSS *2
czech Cheng Martin Sedlak 24/05 4.48 syzygy OSS
england netherland Chess System Tal, Rebel Chris Whittington, Ed Schröder 23/06 CSTal 2.0 OSS
lithuania Chess.cpp Gediminas Masaitis 24/09 4.10 / 4.10 JA D/L syzygy OSS
netherland chess22k Sander Maassen van den Brink 20/04 1.14     OSS *1 *2
england Chess-3 Paul Sonkoly 25/08 2.0 / 2.0 JA D/L   OSS
england Chessatron Daniel Allinson 25/03 1.3.14c     OSS *2
germany ChessBrainVB Roger Zuehlsdorf 24/02 4.03a   syzygy OSS *2
italy Chiron, website not available Ubaldo Andrea Farina 22/01 5.01 w32 (220113) *28   *9 *10 *3
germany brazil Cinder Bruno Dutra 25/08 0.3.1 REPO *15 syzygy OSS
italy Cinnamon Giuseppe Cannella 22/07 2.5 / 2.5 JA REPO (240108) syzygy *10 OSS *2
usa Clarity, ² Anura Joseph Pasfield 25/07 8.0.0 / 8.0.0 JA D/L syzygy OSS
world Clockwork, GitHub: D/L *16 ... the Clockwork developers 25/10 251015-cfac5898 dev   OSS *2
romania Clover Luca-Mihnea Metehau 25/09 9.1 / 9.1 JA D/L syzygy OSS
canada Clovis Jonathan McDermid 23/03 S / III JA dev D/L (251009)   OSS *2
spain Coiled, web Oscar Gavira 23/07 1.2 / 1.2 JA REPO (240201)   OSS *2 *29
england Colossus Martin Bryant 25/06 2025b   syzygy free *2
poland Combusken - archived Marcin Henryk Bartkowiak 22/01 2.0.0 / 2.0.0 JA REPO (241010) syzygy OSS *2
russia Counter Vadim Chizhov 24/01 5.5 / 5.5 JA D/L OSS
england Crab, RWBC Jasper Shovelton 25/07 S / 4.6.3 JA / 4.6.3 GS D/L (250918)   OSS *2
usa Crafty, WIKI *18 Prof. Robert M. (Bob) Hyatt 20/02 25.6 JA xb D/L (250901) syzygy OSS *2
germany CT800 Rasmus Althoff 24/08 1.46 REPO *15   OSS *2
spain DanaSah Pedro Castro 23/06 9.1 / 9.1 JA D/L (250807) *9 *10 OSS
spain ² Caligula *18 " 22/07 1.1 xb   *9 free *2
usa Daydreamer Aaron Becker 16/09 2.00 Pre2 / 2.00 JA Pre2 REPO (240216)   OSS *2
germany Deep iCE Thomas Petzke 19/10 4.0.853   *12 free *2
turkey Defenchess, RWBC Can Cetin, Eldenk Dogac 19/08 2.2 / 2.3 JA / 2.3 GS D/L (250813) syzygy OSS *2
france Demolito, current D/L Lucas BREASCH 21/10 211004 / 250408 dev REPO *15   OSS *2
philippines Deuterium, GitHub projects Ferdinand Mosca 19/09 2019.2.37.73     free *2
turkey Devre Ömer Faruk Tutkun 24/08 6.0 / 6.39 JA dev D/L (241101) syzygy OSS
germany DisasterArea (WayBack), REPO Jochen Peussner 16/07 1.65   syzygy free *2
world Dirty *18 Fonzy Bluemers, et al. 25/04 Catpaw xb   *9 free *2
netherland Dog, GitHub Folkert van Heusden 25/10 4.10.1 REPO *15 syzygy OSS
usa Dragon by Komodo, CB Don Daily, et al. 23/10 3.3 MCTS syzygy *3 *4
usa ² Komodo, Iv " 20/11 14.1 MCTS *20 syzygy free *2
romania Eidolon Daniel Malanca 25/03 1.0.0   OSS
hungary Eleanor, web Mark Kasa 25/08 2.0 REPO *15 OSS
india Elixir *16 Arjun Basandrai 24/11 3.0 (241124) / 3.0 JA D/L OSS
russia Equisitum, net, ² Drofa Alexander Litov 24/03 1.0 / 1.30 JA dev D/L (250629) OSS
usa Ethereal, web, IPman Andrew Grant 23/02 14.00 IP / 14.31 JA dev REPO (240303) syzygy OSS *3
england Eubos Chris Bolt 25/08 4.1 / 4.1 JA / 251010 dev D/L   OSS *1
netherland Euwe Joost Houben 25/03 2.1.0 / 2.1.0 JA D/L syzygy OSS *2
spain EveAnn *18 Andrés Valverde 25/10 3.5 xb   *9 free
usa EXchess (WayBack) *18 Dan Homan 17/02 7.97b xb   *12 OSS *2
germany FabChess Fabian von der Warth 20/11 1.16     OSS *2
belgium Fire, Firefather projects, web Norman Schmidt 25/08 10 / 10 JA D/L OSS
usa Fizbo *17 Youri Matiounine 17/12 2.0 / 2.0 JA REPO (250702) syzygy OSS
england Francesca *18 Tom King 22/09 0.32 xb     free *2
germany Fridolin Christian Sommerfeld 22/06 4.00 / 4.00 JA D/L (250617) syzygy OSS
new_zealand Frozenight Mark Carlson 23/01 6.0.0 / 250720 JA dev D/L OSS
new-zealand ² ice4 " 25/03 6 / 6 JA dev D/L "
germany Ginkgo, CB Frank Schneider 25/05 Fritz 20 (250520) syzygy *3
spain Gödel (Wayback), REPO Juan Manuel Vázquez 20/02 7.0 JA     free *2
italy Gogobello Salvatore Giannotti 20/05 2.2   syzygy OSS *2 *29
russia GreKo Vladimir Medvedev 21/08 210815     OSS
philippines GOOB Gabriel Montes 23/07 1.8.9 / 1.8.9 JA REPO (240830)   OSS *2
russia Gull, WIKI Vadim Demichev 14/04 3     OSS *2
russia usa Gull, Roc, Roc2 *23 Vadim Demichev, Tom Hyer 25/02 2.0.5 REPO *15 syzygy "
russia spain Gull *23 Vadim Demichev, Jose Maria Velasco 16/05 3.1 JV   " "
russia italy Gull *23 Vadim Demichev, Basil Falcinelli 16/05 3.0 BF   " "
finland Hakkapeliitta Mikko Aarnos 16/04 TCEC v2 REPO *15 syzygy OSS *2
finland belgium Hakkapelitta, Firefather Mikko Aarnos, Norman Schmidt 23/06 3.0 NNSV *13   " OSS *2 *29
australia Halogen Pre Kieren Pearson 25/10 15.9.3 Pre   syzygy OSS
australia Halogen, net " 25/09 15.0.0 / 15.0.0 JA D/L " "
usa philippines Hannibal Sam Hamilton, Edsel Apostol 18/08 S / 181202 JA dev D/L (250916)   OSS *2
italy Heimdall, GitHub Mattia Giambirtone 25/09 1.4.2 REPO *15 OSS
england Hiarcs Mark John Uniacke 24/12 15.4 syzygy *2 *3
usa Horsie, ² Lizard Liam McGuire 25/05 1.1 / 1.1 JA D/L OSS
ukraine Igel Volodymyr Shcherbyna 24/12 3.6.0 / 3.6.3 JA dev D/L (250628) syzygy OSS
brazil Illumina Thomas Mergener 25/05 3.0 / 250525 JA dev D/L OSS
poland Inanis Pawel Osikowski 25/02 1.6.0 REPO *15 syzygy OSS *2
macedonia Integral Aron Petkovski 25/02 7 / 250812 JA dev D/L syzygy free
philippines Invictus Edsel Apostol 21/06 r382 / r391 JA D/L (250901)   OSS *2
france Isa Daniel ANULIERO 25/05 4.4   OSS
poland Jackal Tomasz Jaworski 24/12 1.2.0 / 1.2.0 JA MCTS D/L   OSS
germany JackyChess Matthias Lang 25/05 25.04 / 25.04 JA D/L OSS *1 *2
russia K2 Sergey Meus 21/01 0.99     OSS *2
france KnightX Christophe JOLLY 25/06 4.5   *12 free *2
usa Kobra Jasper Sinclair 25/05 2.0 JA D/L *6   OSS
germany Koivisto, web Finn Eggers, Kim Kåhre 23/01 9.0 / 9.2 JA dev D/L (250525) syzygy OSS
japan Kuma Kato Daichi 24/01 1.2   OSS
slovenia Lambergar Janez Podobnik 25/09 1.3 REPO *15 OSS
usa Laser Jeffrey An, Michael An 19/02 1.7 / 1.7 JA dev D/L (250806) syzygy OSS *2
world Leela Chess Zero, web ... the Lc0 developers 25/08 Lc0 0.32.0 PUCT syzygy OSS
germany Leorik Thomas Jan 25/04 3.1.3 (250421) / 3.1.3 JA D/L OSS
germany Little Goliath Evolution Michael Borgstädt 23/06 LGE 3.17     free
wales Lozza Colin Jenkins 25/09 8 REPO *15   OSS *1
wales ² Cwtch " 25/09 3     OSS
netherland Lunar Patrick Hilhorst 25/09 0.4.0 REPO *15   OSS
spain Lynx Eduardo Cáceres 25/09 1.11.0 REPO *15   OSS
usa MadChess, GitHub Erik Madsen 25/03 3.3     OSS
usa Maelstorm Saigautam Bonam 25/08 3.3.0 REPO *15   OSS
usa Mantissa Jeremy T. Wright 22/08 3.7.2 / 240920 JA dev D/L syzygy OSS
sweden Marvin, net Martin Danielsson 24/05 6.3.0 / 6.3.0 JA D/L syzygy OSS
denmark Meltdown Hans Binderup 25/07 1.10 / 1.10 JA D/L syzygy OSS *2
italy Mida - archived Giacomo Porpiglia 24/04 2.3.1 / 2.3.1 JA REPO (240814) OSS
usa Midnight Archishmaan Peyyety 24/01 9 / 9 JA D/L OSS
france Minic, Minic-Dist, net Vivien CLAUZON 25/05 S 3.44 / 3.43 JA D/L syzygy OSS
brazil Minke Eduardo Marinho 25/09 2.0.0 (250917) REPO *15   OSS
germany Molybdenum Hannes Lerchl 24/11 4.1 / 4.1 JA D/L (250812) OSS
germany Monolith Jonas Mayr 20/05 2.01   syzygy OSS *2
czech Motor Martin Novák 25/06 0.9.0 / 0.9.0 JA D/L OSS
canada Mr Bob Vincent Yu 24/03 1.3.0 / 1.3.0 JA D/L (250804) OSS
usa Myrddin *18 John Merlino 25/04 0.93 JA xb D/L *6 *10 OSS
germany Nalwald Jost Triller 24/07 19 / 250310 JA dev D/L OSS *2
cuba Nawito, GitHub Ernesto Torres Feliciano 22/08 22.07   OSS *2
germany Nemorino, net, RWBC Christian Günther 21/01 6.01 / 6.11 JA dev D/L (240808) syzygy OSS
usa Nirvanachess Thomas Kolarik 20/12 2.5 (201212)   *22 free *2
italy Nu-chess, D/L Filippo Marfe 21/10 1.0     free *2
italy Obsidian, net Gabriele Lombardo 25/05 16.00 / 16.00 JA D/L (250521) syzygy OSS
italy Obsidian, TC-84272 (CE) " 25/10 16.15 CE dev / 16.14 JA dev D/L (250706) " "
england Odonata Andy Watkins 24/07 1.0 / 1.0 JA REPO (250719) OSS
germany OliThink, GitHub Dr. Oliver Brausch 25/09 5.11.9 (250919) REPO *15   OSS *2
germany OliThink + Cerebrum_net " ... + David CARTEAU (NNCe v1.1) 25/09 5.11.9 NNCe JA *27 D/L   OSS
france Orion, net, ² Nostradamus David CARTEAU 24/03 1.0   free
spain granada Oxide Miguel Ángel De la Vega Rodríguez 25/08 2.0.0 / 2.0.0 JA D/L   OSS
england Panda Sebastiano Rebonato-Scott 25/08 1.1.1 (250819) REPO *15 OSS
canada Patricia, ² Willow Adam Kulju 25/07 5 / 5 JA D/L syzygy OSS
canada Patricia-EAS " 25/10 5 xtremeEAS   " "
portugal Pawn Pedro Rui Coelho 25/05 4.0 / 4.0.4 JA dev D/L (250809) syzygy OSS
sweden pawnocchio Jonathan Hallström 25/07 1.8.1 REPO *15 syzygy OSS
sweden pawnocchio HCE " 25/09 1.9   syzygy OSS *2
usa Peacekeeper Kyle Zhang 24/06 3.01 / 3.01 JA REPO (250718) OSS
usa ² Exocet " 24/09 0.4.0 / 250817 JA dev D/L "
usa Pedantic JoAnn D. Peeler 24/09 2.1.0 syzygy OSS
italy Perseus Giovanni Manduca 25/04 1.1 / 1.1 JA D/L OSS *2
russia Petrel Aleks Peshkov 25/10 S 2.1 / 2.1 JA D/L *6   OSS *2
brazil pirarucu Raoni Campos 20/05 3.3.5 / 3.3.5 JA REPO (240430)   OSS *1 *2
england Pingu William Ching 24/12 5.0.0 / 5.0.0 JA D/L OSS
germany PlentyChess Patrick Leonhardt 25/09 7.0.0 / 7.0.0 JA D/L syzygy OSS
germany PlentyChess Pre " 25/10 7.0.2   " "
france Pluto, web Ludovic DEBEVER 25/07 1.0.1     OSS
turkey Potential Eren Araz 25/08 3.0.0 / 3.0.0 JA D/L OSS *2
usa Pounce, RWBC Alex Flick 25/10 3.0.0 REPO *15   OSS
australia Princhess Lana Samson (Jacob Jackson) 25/10 0.21.0 / 0.21.0 JA D/L syzygy OSS
germany Priessnitz Kevin Feske 24/11 2.0 / 2.0 JA D/L OSS *2
germany Protector, sources Raimund Heid 15/10 1.9.0 / 1.9.0 JA REPO (240606) *12 OSS *2
italy Protej Alex Brunetti 25/04 0.6.8 free *2
france Prune Thomas GIROLAMI, Joachim BIENVENUE 25/10 1.0.1   OSS
poland Publius D/L Pawel Koziol 25/10 RC6 REPO *15 OSS
usa Puffin Kurt Peters 24/11 5.0 REPO *15   OSS
canada PZChessBot Kevin Lu, William Ma 25/10 4.0 / 4.0 JA D/L OSS
germany Qapla Volker Böhm 25/05 0.3.2 (250517) / 0.3.2 JA D/L *22 OSS *2
slowakia Quanticade Martin Botka 25/05 Orion 2.0 / 2.0 JA D/L OSS
belarus Quirky Anton Kernozhitsky 25/08 2.0 REPO *15 OSS
world Reckless Arseniy Surkov, et al. 25/08 0.8.0 / 0.8.0 JA REPO *15 syzygy OSS
world " " 25/10 251012 JA dev D/L not working OSS
hungary Renegade Krisztián Peőcz 25/05 1.2.0 / 1.2.0 JA D/L OSS
usa Rengar Thomas Swayze 24/10 2.1.1 / 2.1.1 JA D/L   OSS
italy Revenge, ² Pedone Fabio Gobbato 25/01 4.0 syzygy free *5
spain Rhetoric (Wayback), web Alberto Sanjuan 15/11 1.4.3   free *2
bangladesh Rice Rafid Ahsan 24/03 8.0.0 (240318) REPO (250719) OSS
bangladesh ² Jet " 24/03 1.2   OSS
poland spain Rodent, GitHub, RWBC Pawel Koziol, Pablo Vazquez 21/04 IV: 0.22 / 0.30 GS / 0.33 JA D/L (250318)   OSS *2
world Rodent Pawel Koziol, et al. 22/03 1.1 NNRe JA *26 REPO (241008)   OSS
netherland rofChade, ² PeSTO Ronald Friederich 23/09 3.1 syzygy free
germany RubiChess, net Andreas Matthies 24/08 240817 / 250606 JA dev D/L syzygy OSS
russia RukChess, net Ilya Rukavishnikov 25/06 4.1.0 / 4.1.0 JA D/L OSS
spain RuyDos (Wayback) Álvaro Begué, José Manuel Morán 18/12 1.1.11   syzygy free *2
czech usa Rykba, CB, web Vasik Raylich 17/11 Fritz 16 (171113)   *12 *2 *3 *21
england Sapling Timothy Jones 25/04 1.2.7 REPO *15 OSS
belarus Saturn Egor Moroz 24/04 1.3 / 1.3 JA D/L OSS
germany israel Schoenemann Jochen Gehtab 24/12 0.4.0 / 0.4.0 JA D/L OSS
canada Schooner D/L *18 *19 Denis Sceviour 19/12 2.2 xb     free *2
ethiopia Scorpio *8 Daniel Shawul 25/05 3.0.15.14 / 3.0.15.14 JA D/L *9 OSS
iceland Seawall Pétur Runólfsson 25/03 250322 / 250322 JA D/L   OSS *2
usa Seer, net Connor McMonigle 23/12 2.8.0 / 250310 JA dev D/L syzygy OSS
france Senpai, web (own site) Fabien LETOUZEY 17/11 2.0 / 2.0 JA D/L (250814) OSS *2
czech Sentinel Daniel Samek 25/02 2.0 / 2.0 JA D/L   OSS
france Seredina Alexander WIMMER 25/01 1.2c REPO *15   OSS
usa Serendipity Shawn Xu 25/01 1.0 / 1.0 JA D/L OSS *1
russia Shallow2, GitHub Dimitry Sultanov 22/08 5 / 5 JA dev D/L (251008)   OSS *2
china Shallow Guess Zixiao Han 25/04 0.4.0 REPO *15   OSS
germany Shredder Stefan Meyer-Kahlen 16/10 13   syzygy *11 *2 *3
france Simbelmyne Sam ROELANTS 24/08 1.10.0 / 1.10.0 JA D/L (250904) OSS *2
usa Slow Chess Blitz Jonathan Kreuzer 22/06 2.9 syzygy free
germany Smallbrain Max Allendorf 23/01 7.0 / 250722 JA dev REPO syzygy OSS
russia SmarThink Sergei S. Markoff 18/02 1.98   syzygy free *2
usa Spaghet, net Li Ying 24/08 BologNNese 1.0 / 1.1.3 JA dev D/L (250516) OSS
germany Spike, GitHub Ralf Schäfer, Volker Böhm 25/07 1.4.1   *12 OSS *2
portugal Starzix Ricardo Pinto 25/04 6.1 / 6.1 JA D/L OSS
france Stash, GitHub, ² Vault Morgan HOUPPIN 25/04 37.0 / 37.10 JA dev D/L (250803) OSS *2
usa StockDory Shaheryar Sohail 23/08 Starfish 0.1 OSS
world Stockfish, dev, net, Iv ... the SF developers 25/03 17.1 / 17.1 JA D/L syzygy OSS
world Stockfish, dev, GitHub: D/L - authors 25/10 2501014-75edbee0 dev " "
world Stockfish, dev - page 76 - authors 200330 20/07 200731 dev *20   " OSS *2
world Stockfish, Sting, TC-84895 *7 + Marek Kwiatkowski 25/05 Black Hole 10x (250530) REPO *15   OSS *2
world Stockfish, Crystal *7 + Joseph Ellis 25/08 9 / 250802 JA dev D/L syzygy OSS
world Stockfish, Modjo *7 + Jörg Oster 25/08 250817 JA dev D/L *6 " "
world Stockfish, ShashChess *7 *16 + Andrea Manzo, et al. 25/10 39.1 / 39.1 JA MCTS D/L (251009) " "
world Stockfish, ² Alexander *7 " 25/10 6.1 MCTS   " "
england Stormphrax, ² Polaris Conor Anstey 25/06 7.0.0 / 7.0.17 JA dev D/L (250801) syzygy OSS
romania Sturddle Cristian Vlasceanu 25/09 2.3.1     OSS
usa Supernova Minkai Yang 21/09 2.4 / 2.4 JA D/L (251015) syzygy OSS
usa Superultra Alexander Liang 25/04 2.1 / 2.1 JA D/L OSS
sweden Svart Cristopher Torgrip 23/08 6 (230828) / 6 JA D/L (240607) OSS
usa Tarnished, net Anik Patel 25/08 Consort 4.0 REPO *15 OSS
england Tcheran Jonathan Gilchrist 25/01 5.1 REPO *15 syzygy OSS *2
sweden Texel Peter Österlund 25/01 1.12 / 1.13a4 JA dev D/L (250713) syzygy *10 OSS
sweden ² CuckooChess, Dropbox " 24/05 1.13 / 1.13 JA REPO (240501)   free *1
netherland The Baron *18 Richard Pijl 23/05 3.451 xb   syzygy free *2
usa Titan Jeffrey Powell 24/06 1.1 / 250628 JA dev D/L OSS
world Dark Toga, TC-77514 *24 Thomas Gaksch, Dietrich Kappe et al. 21/06 III: 1.1 / 1.1 JA REPO (240620)   OSS
world Toga, WIKI *24 " 21/05 III: 0.3.12 / 0.3.12 JA REPO (240918)   OSS
world Toga *24 Thomas Gaksch, Ed Schröder et al. 22/03 II: 4.0-1.1 NNRe JA *26 REPO (240515)   OSS
hungary tomitankChess Kuzmics Tamás 25/09 S / 5.3 JA D/L (250927)   OSS *1 *2
england Topple Vincent Tang 21/08 0.8.1 / 0.8.1 JA REPO (240901) syzygy OSS *2
germany Tornado Engin Üstün 20/12 201209 (241015 NN)   *12 free
germany Truncator *16 Nikolas Windheuser 25/10 1.0 (Pesto)   syzygy OSS
germany ² Schneckbert " 25/04 3.0 / 3.0 JA D/L OSS
brazil Tucano, net Alcides Schulz 24/12 12.00 / 12.17 JA dev D/L (250715) syzygy OSS
south-korea Turbulence Jun-Seo Choi 25/06 0.0.8 / 0.0.8 JA D/L OSS
russia Uralochka Ivan Maklyakov 25/09 3.42a / 3.42a JA D/L syzygy OSS
italy Vajolet2, web Marco Belli 19/11 S NNv1 / 2.8.0   syzygy OSS *2
germany Velvet Martin Honert 24/11 8.1.1 / 8.1.1 JA D/L syzygy OSS
germany Velvet dev " 25/07 S / 9.0.0 JA dev7 D/L (250715) " "
india Vengeance Amar Thapa 23/05 3.1.0 / 3.1.0 JA REPO (240526)   OSS
scotland Viridithas, web, net Cosmo Bobak 25/08 18.0.0 / 18.0.0 JA D/L syzygy OSS
usa Wahoo Andrew Hockman 23/08 4.0.0 / 4.0.0 JA REPO (240428) syzygy OSS
usa Wasp, mirror John Stanback 24/06 7.00 / 7.07 dev syzygy free
singapore Weak *16 Ethan Pan 25/08 1.0.0 / 1.0.0 JA D/L   OSS *2
usa Weiawaga Kyle Krowpman 25/08 6.0 / 6.0 JA D/L   OSS
norway Weiss Terje Kirstihagen 21/08 2.0 / 250206 JA dev D/L syzygy OSS *2
switzerland Winter Jonathan Rosenthal 24/06 4.0 JA REPO *6 OSS
serbia Xiphos Milos Tatarevic 19/11 0.6 / 0.6.1 JA dev REPO (250801) syzygy OSS *2
usa Yakka Christopher Crone 25/08 1.3     OSS
turkey Ynode Orhan Öztürk 25/09 0215 free
england Yukari Hannah Ravensloft 25/04 2025 4.1 JA REPO *6 OSS
kurdistan Zahak Amanj Sherwany 22/05 10.0 / 10.0 JA D/L (250717) syzygy OSS
france Zangdar Philippe CHEVALIER 25/09 5.00.02 REPO *15 syzygy OSS
russia Zevra Oleg Smirnov 25/02 2.6 / 2.6 JA D/L   OSS
romania Zurichess, web (WayBack) Alexandrou Mosoi 17/09 Neuchatel     OSS *2
End of list, stronger engines released before 2015 not listed, like:
Critter, Equinox, Gaviota, Glaurung, Junior, Minko, Naum, Quazar, Spark, Umko

Notes:
go to start of site

- only one engine per programmer or group of programmers is counted = 238
- listed are engines that are likely to be in the TOP 222 or close to the TOP 222
- listed are strongest xb / JAVA / MCTS engines
- listed are no private engines
- listed are no engines the name of programmer is unknown, like
 - 01. Bread v1.6.0 JA, 02. Cataphract v1.1 JA, 03. Expositor v5.0 JA, 04. Iris v2.0 JA, 05. Prelude Fusion v2.0,
 - 06. Sirius v9.0 JA, 07. Stallion D/L, 08. STRO4K v4.0, 09. Tantabus v240918 dev JA
- listed are CPU engines, no GPU engines, like 1. Allie, JA, 2. Ara, 3. Ceres, JA ...
- it is possible that unmarked derived engines are hidden in the list; I am not a police officer.
*1 = JAVA based engine, Java-JRE v8 Upd 461, JDK v25, Node.js v24.10.0 (for Lozza)
*2 = HCE (Hand Crafted Evaluation). If not HCE then NN = Neural Network
*3 = commercial product
*4 = Komodo & Dragon by Komodo v1 are freely available
*5 = Revenge v1 to v3 are commercial products, freely available since v4
*6 = GitHub compiles created by Jim Ablett = JA
 *7 = Stockfish derived
 *8 = please use the install.bat on Scorpio GitHub site
 *9 = egbb bases (Caligula, Chiron, DanaSah, Dirty, EveAnn, Scorpio)
 *10 = gaviota bases (Chiron, DanaSah, Equinox, Gaviota, Minko, Myrddin, Cinnamon + Texel in add. syzygy)
*11 = shredder bases (Shredder in add. syzygy)
 *12 = nalimov bases
 *13 = Hakkapeliitta uses in my configuration a Neural Network file from Sergio Vieri = NNSV
 *14 = Andscacs uses in my configuration a Neural Network file from Stockfish = NNSf
*15 = older JA compiles are available
*16 = libgcc_s_seh-1.dll, libstdc++-6.dll, libwinpthread-1.dll ... library files required, D/L v15.2.0 / 250813
*16 = can be found on: mingw-w64, GitHub (x86_64-posix-seh-msvcrt-rt)
*16 = ShashChess 39.1 JA required:
*16 = libwinpthread-1.dll (mingw), libcurl.dll (v8.15.0, can be found in Notepad++), D/L v8.15.0 / 251007
 *16 = You can check that with Dependency Walker, v2.2 / 061029
*17 = Fizbo was the first engine to use Neural Network technologies!
 *18 = wb2uci.exe, xb adapter by Odd Gunnar Marlin required, D/L v1.3b22 / 070623
*19 = Schooner runs more stably as xb engine
 *20 = Stockfish, the latest HCE version! Komodo, the latest HCE version!
*21 = Rybka v2.3.2a is freely available
*22 = own bitbases (Nirvanachess, Qapla)
*23 = Gull derived (programmer of Gull = Vadim Demichev)
*24 = Fruit derived (programmer of Fruit = Fabien LETOUZEY, web)
 *25 = Bobcat derived (programmer of Bobcat = Gunnar Harms)
*26 = Rodent, Toga uses a Neural Network file from Rebel = NNRe
*27 = OliThink compiles by Jim Ablett can use the Cerebrum Neural Network files = NNCe
 *28 = Chiron runs under Windows 11 as w32 engine only
*29 = Coiled, Gogobello, Hakkapeliitta modified by Norman Schmidt can use a Stockfish Neural Network file

S = Sources available only
² = second program by the programmer, strongest at first!

(green date) in brackets, creation date of *.exe

dev = development, Pre = Pre-release, RC = Release Candidate, D/L = download, OSS = Open-Source-Software,
web = website, net = Neural Network file(s), Iv = Interview, xb = xboard, MCTS = Monte-Carlo Tree Search

Compiles by: JA = Jim Ablett, CE = Chris Euler, IP = IPman, GS = Günther Simon, RWBC
Older JA directory's by: Lenard Spencer, Tony Mokkonen
REPO if the D/L URL to the last JA compiles or the version by programmer(s) is newer as Jim's compiles

Quest by Frans Morsch, Fritz 13 and versions before
Pandix by Gyula Horváth, Fritz 14
Rybka by Vasik Raylich, Fritz 15 / 16
Ginkgo by Frank Schneider, Fritz 17 / 18 / 19 / 20


by Frank Quisinsky, Germany
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A help file to find TOP engines faster!
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