Chess-Engines (2)

Last changes: July 25th, 2026 (19:00)
back to ETOC-G, Links

goto end of site (Notes) ............... !! Well-assorted by: Release date of engines

Obligation: Chess programming WIKI, RWBC
Fora: CSS, Hiarcs, Schachcomputer.info, TalkChess - New - JA
Open-Bench-Test: T1, T2, T3, T4, T5, T6, T7
Tourney: TCEC, Ratings: CCRL, CEGT, Chess324, IPman, SPCC, UBC

GUIs (39)
Arena 3.5.1, Banksia 0.58 RC1, BearChess 1.10.0.0, CB-Emu 260725, CCRL 0.2.0,
ChessMD 1.0, ChessX 1.6.10, Coliseum 3, CST 2.07, CuteCh. 1.5.1, CuteCh. QOL 1.1,
en-croissant 0.15.0, HIARCS-Ch.-Explorer-Pro 1.5.2, Hires 1.5.0, JFXChess 5.0.0,
LiGround 0.6.0, LINEACHESS 3.2, LittleBlitzer 2.80, Lucas-Chess R2.21-FP20,
Lucas-Chess R6.0.4, Myracle 1.0 b105, Nibbler 2.5.8, Obsidian-Ch.-Studio 3.0.19,
Pawn-Appetit 0.12.1, Python E. Ch. 2.9.0, Qapla 0.2.0, Rebel Beta, Scid 5.2,
 Scid vs. PC 4.27, Scid Com. 5.1.3.85, Shredder 13, Swiss-Ch. 9.64, Winboard 4.9.0

ChessBase: Fritz v20-upd.13, Fritz v21-upd.1, CBase v18-upd.19, CBase v26-upd.8
CHESS OK: Aquarium 2026, Chess-Assistant 2026

Tools: Norm's 40H Chess-Tools 260525, PGN-Extract 26-04
Endgame: syzygy, others, Logos: Chess-Cache		  

 

Many of the current TOP-266 available engines included!
 Well-assorted by: Alphabetic order of engines
*1 update available since page (1) was frozen (July 07th, 2026, 00:00), *2 = 2 updates a.s.o., *BF = BugFix
 -

258 (+8) Engines upd. Programmer(s) Date Version(s) Jim Ablett Endgame Status
lithuania 4k.c   Gediminas Masaitis 26/06 9.0 260613 - - OSS *2
world 4ku   the 4ku developers 24/08 5.1 / 5.1 JA REPO 240910 - OSS *2
england Admete, tags *1 Kylie MacFarquharson 26/07 1.9.0 / 1.9.0 JA D/L syzygy OSS
england ² Akimbo   Jamie Whiting 24/03 1.0.0 / 1.1.0 JA dev 241218 D/L - OSS
usa Aku - archived   Hoa T. Vu 25/07 250709 / 250709 JA D/L syzygy OSS
italy Alexandria, net   Guiseppe Pagano 26/02 9.0.0 / 9.0.0 JA D/L - OSS
china Altair   Alexander Tian 24/02 7.0.0 / 7.2.1 JA dev D/L 250703 - OSS
france Amoeba   Richard DELORME 21/12 3.4 / 3.4 JA REPO 231221 - OSS *2
andorra Andscacs (WayB), web   Daniel José Queraltó 19/03 0.95123 - - free *2
spain ² Anubis *18 - archived   José Carlos Martínez Galán 25/10 3.06 xb REPO *15 syzygy OSS
usa Arasan, GitHub *1 Jon Dart 26/07 26.0 REPO *15 syzygy OSS
norway Arcanum   Lars Murud Aurud 26/05 2.8 REPO *15 syzygy OSS
vietnam Askaig   Nguyen Van Thang 26/07 260704 -   OSS
austria Astra   Semih Özalp 26/05 7.0 / 7.0 JA D/L 260606 syzygy OSS
germany Asymptote   Maximilian Lupke 20/05 0.8 - syzygy OSS *2
spain Atlas   Andrés Manzanares 24/12 4.35 - syzygy free *2
china Avalanche   Yinuo Huang 26/06 3.0.0 / S 3.1.0 TCEC dev REPO *15 syzygy OSS
bulgaria Bagatur   Krasimir Topchiyski 26/05 5.5c REPO *15 syzygy OSS *1
usa Berserk, TC-83560   Jay Honnold 26/05 14 / 14 JA D/L syzygy OSS / *2
sweden bitbit *16   Isak Ellmer 25/10 1.6 / 1.6 JA D/L - OSS
india Bit-Genie   Aryan Parekh 21/08 9 / 9.24 JA dev D/L 250920 - OSS
turkey Black Marlin   Doruk Şekercioğlu 24/02 9.0 / 250413 JA dev D/L - OSS
hungary ² BlackCore   Balàzs Szilágyi 23/03 6.0 / 6.0 JA REPO 250721 syzygy OSS
netherland Bobcat   Gunnar Harms 16/11 8.0 JA REPO 241113 - OSS *2
ukraine Booot   Alex Morozov 25/02 7.4 - - OSS
syria Bread, tags   Nour Berakdar 26/05 S 3.1.3 / 3.1.0 / 3.1.0 JA D/L syzygy OSS
usa Cadie   Martin Wyngaarden 25/03 2.1 / 2.1 JA D/L - OSS *2
poland Caissa   Michal Witanowski 26/04 1.25 / 1.25 JA D/L syzygy OSS
netherland ² Calvin   Dan Kelsey 25/06 6.1.1 / 6.1.1 JA D/L - OSS *1
italy Carp + Carp   Andrea Sgobbi 23/09 3.0.1 / 3.0.1 JA dev2 D/L 250928 - OSS
india Catalyst *1 Anany Tanwar 26/07 3.1.0 REPO *15 - OSS
argentina Ceibo *1 Federico Rojo 26/07 1.10 - syzygy free
england Celeris   Hin-Yu-Evan Fung 25/07 2.0 / 2.0 JA D/L - OSS
india Chal   Naman Thanki 26/04 1.4.1 - - OSS *2
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, web (GUI)   Martin Sedlák 26/05 4.48 / 4.48a (GUI setup) - syzygy OSS
lithuania ² 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 26/04 4.0 REPO *15 - OSS
england Chessatron   Daniel Allinson 25/03 1.3.14c - - OSS *2
germany ChessBrainVB   Roger Zühlsdorf 26/04 4.10 - syzygy OSS *2
netherland Chessnix   Eric Langedijk 26/04 1.4 REPO *15 - OSS *2
england netherland Chess System Tal, web   Chris Whittington, Ed Schröder 26/06  2.07 / EAS / Extr. / Absurd - - free
italy n.a. Chiron   Ubaldo Andrea Farina 22/01 5.01 w32 220113 *14 - *9 *10 *2, *3
germany brazil Cinder *1 Bruno Dutra 26/07 0.5.2 REPO *15 syzygy OSS
usa Clarity   Joseph Pasfield 25/07 8.0.0 / 8.0.0 JA D/L syzygy OSS
romania Clover   Luca-Mihnea Metehau 25/09 9.1 / 9.1 JA D/L syzygy OSS
germany clrsrc *1 Stefan Kammann 26/07 1.3.0 - syzygy OSS
england Coda *2 Adam Twiss 26/07 0.9.2 - syzygy OSS
spain Coiled, web   Oscar Gavira 23/07 1.2 / 1.2 JA REPO 240221 - OSS *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   Jasper Shovelton 25/07 S / 4.6.3 JA D/L 250918 - OSS *2
usa Crafty, WIKI *18   Prof. Robert M. (Bob) Hyatt 20/02 25.6 JA xb D/L, D/L syzygy OSS *2
wales Cwtch *BF Colin Jenkins 26/07  6 260709 - - OSS
spain DanaSah   Pedro Castro 23/06 9.1 / 9.1 JA D/L 250807 *9 *10 OSS
germany Deep iCE   Thomas Petzke 19/10 4.0.853 - *12 free *2
turkey Defenchess   Can Cetin, Eldenk Dogac 19/08 2.2 / 2.3 JA D/L 250813 syzygy OSS *2
france Demolito, current   Lucas BREASCH 25/12 251216 REPO *15 - OSS *2
turkey Devre   Ömer Faruk Tutkun 24/08 6.0 / 6.39 JA dev D/L 241101 syzygy OSS
world Dirty *18   Fonzy Bluemers, et al. 25/04 Catpaw xb - *12 free *2
netherland Dog, GitHub, tags   Folkert van Heusden 25/12 4.10.2 REPO *15 syzygy OSS
usa Dragon by Komodo, Iv, CB   Don Daily, et al. 23/10 3.3 / 3.3 MCTS - syzygy *3 *4
russia ² Drofa   Alexander Litov 23/12 4.1.0 fix / 4.1.1 JA REPO 240513 - OSS
romania Eidolon   Daniel Malanca 25/03 1.0.0 - - OSS
hungary Eleanor, web   Mark Kasa 26/04 4.1 / 4.1 JA D/L - OSS
india Elixir *16   Arjun Basandrai 24/11 3.0 241124 / 3.0 JA D/L - OSS
russia Equisitum, net   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
spain EveAnn, Cerebrum v2.0   Andrés Valverde, D. CARTEAU 26/06 5.1 NNCe - - free *7
usa ² EXchess (WayB) *18, web   Dan Homan 17/02 7.97b xb - *12 OSS *2
usa Exocet   Kyle Zhang 24/09 0.4.0 / 250817 JA dev D/L - OSS
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 D/L 260405 syzygy OSS
usa FoxChess   Nathan Faltermeier 26/06 1.2 - - OSS *2
england Francesca *18   Tom King 22/09 0.32 xb - - free *2
new_zealand ² Frozenight   Mark Carlson 23/01 6.0.0 / 7.0.0 JA dev D/L - OSS
france Gaia, web   J.-F. ROMANG, D. RABEL 26/02 4.1.3 - syzygy free
china Gecko, tags + Gecko   Bingwen Yang 26/06 S 0.40.1 / 0.40 - - OSS
spain Gilipol   José Carlos Martínez Galán 26/06 1.00 / 2.00 / 2.00 JA D/L syzygy OSS
germany Ginkgo, CB   Frank Schneider 26/05 Fritz 21 260513 - syzygy *3
spain Gödel (WayB), REPO   Juan Manuel Vázquez 20/02 7.0 JA - - free *2
italy Gogobello   Salvatore Giannotti 20/05 2.2 - syzygy OSS *2
philippines GOOB, tags   Gabriel Montes 26/01 S / 2.0.0 JA D/L - OSS *2
norway Grail   Jørgen Hanssen 26/06 2.0.1 - syzygy OSS
russia Gull, WIKI   Vadim Demichev 14/04 3 - - OSS *2
russia spain Gull *22   ", Jose Maria Velasco 16/05 3.1 JV - syzygy "
russia italy Gull *22   ", Basil Falcinelli 16/05 3.0 BF - " "
india Gyatso   Gyatso Neesham 26/06 1.4.0 - - OSS
finland Hakkapeliitta   Mikko Aarnos 16/04 TCEC v2 REPO *15 syzygy OSS *2
australia Halogen, net, tags   Kieren Pearson 26/02 16 / 16.7.12 Pre REPO *15 syzygy OSS
usa philippines Hannibal   Sam Hamilton, Edsel Apostol 18/12 S / 181202 JA dev D/L 250916 - OSS *2
italy Heimdall, GitHub   Mattia Giambirtone 26/06 1.5.0 REPO *15 - OSS
england Hiarcs   Mark John Uniacke 24/12 15.4 - syzygy *2 *3
netherland Hobbes *1 Dan Kelsey 26/07 3.0 REPO *15 - OSS
usa Horsie   Liam McGuire 25/05 1.1 / 1.1 JA D/L - OSS
new_zealand ice4   Mark Carlson 25/10 6.1 / 6.1 JA dev D/L - OSS *2
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 / 7 JA / 250812 JA dev D/L / D/L syzygy OSS
philippines Invictus   Edsel Apostol 21/06 r382 / r391 JA D/L 250901 - OSS *2
france Isa   Daniel ANULIERO 25/11 4.5 - syzygy free
poland Jackal   Tomasz Jaworski 26/03 2.0.0 MCTS REPO *15 - OSS
bangladesh ² Jet   Rafid Ahsan 24/03 1.2 - - OSS
england Juggernaut, D/L, TC-85845   Steve Maugham 26/06 2.00 - - OSS *2
canada JustBot *1 Hasan Fakih 26/07 0.3.0 - - OSS
france KnightX   Christophe JOLLY 26/07 4.92 - *12 free *2
usa Kobra   Jasper Sinclair 26/03 2.1 REPO *15 - OSS
germany Koivisto, web   Finn Eggers, Kim Kåhre 23/01 9.0 / 9.2 JA dev D/L 250525 syzygy OSS
usa ² Komodo   Don Daily, et al. 20/11 14.1 / 14.1 MCTS *20 - syzygy free *2
japan Kuma   Kato Daichi 24/01 1.2 - - OSS
slovenia Lambergar   Janez Podobnik 26/05 1.5 REPO *15 syzygy OSS
usa Laser   Jeffrey An, Michael An 19/02 1.7 / 1.8 JA dev D/L 250806 syzygy OSS *2
usa Leaf *18   Dan Homan 26/03 S / 5382 JA dev xb D/L *12 OSS *2
world Leela Chess Zero, web   the Lc0 developers 25/11 Lc0 0.32.1 CPU - syzygy OSS
germany Leorik   Thomas Jan 26/01 3.2.1 260117 REPO *15 - OSS
germany Little Goliath Evolution   Michael Borgstädt 23/06 LGE 3.17 - - free
usa ² Lizard aka LTChess   Liam McGuire 25/01 11.2 REPO *15 - OSS
wales ² Lozza   Colin Jenkins 26/02  9 (*.js incl. in sources) REPO *15 - OSS *1
netherland Lunar   Patrick Hilhorst 25/09 0.4.0 / 0.4.0 JA D/L - OSS
spain Lynx, tags   Eduardo Cáceres 25/10 S TCEC-frd-5 / 1.11.0 REPO *15 - OSS
usa Maelstorm   Saigautam Bonam 25/08 3.3.0 REPO *15 - OSS
jordan Malika *1 Fauzi Akram Dabat 26/07 1.685 - syzygy OSS *2
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 25/11 1.11 / 1.11 JA D/L syzygy OSS *2
usa Midnight   Archishmaan Peyyety 24/01 9 / 9 JA D/L - OSS
france Minic, Minic-Dist, net   Vivien CLAUZON 26/05 3.46 / 3.46 JA D/L syzygy OSS
brazil Minke   Eduardo Marinho 26/04 6.0.0 / 6.0.0 JA D/L - OSS
germany Molybdenum   Hannes Lerchl 24/11 4.1 / 4.1 JA D/L 250812 - OSS
germany Monolith *25   Jonas Mayr 26/04 3 - syzygy OSS *2
england Monty, GitHub: D/L   Jamie Whiting 26/05 260512 MCTS - - OSS
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, Cerebrum v2.0   John Merlino, D. CARTEAU 26/06 0.96 NNCe / 0.96 NNCe JA D/L *10 OSS *7
germany Nalwald   Jost Triller 24/07 19 / 250310 JA dev D/L - OSS *2
germany Nemorino, net   Christian Günther 21/01 6.01 / 6.11 JA dev D/L 240808 syzygy OSS
usa Nirvanachess   Thomas Kolarik 20/12 2.5 201212 - - free *2
australia Noggin   Jeremy Lim 26/07 2.1 - - OSS
italy Nu-chess, D/L   Filippo Marfe 21/10 1.0 - - free *2
italy Obsidian, net, TC-84272   Gabriele Lombardo 25/05 16.00 / 16.00 JA / 16.15 CE D/L syzygy OSS
england Odonata   Andy Watkins 26/02 1.1.0 REPO *15 - OSS
germany OliThink, web, Cerebrum v1.1   Oliver Brausch, JA, D. CARTEAU 25/09 5.11.9 / 5.11.9 NNCe JA-v4 D/L 251124 - OSS *2 *7
usa Onslaught   the Onslaught developers 26/07 1.0 - - OSS
france Orion, Cerebrum v2.0   David CARTEAU 25/11 2.0 - - free / OSS
spain granada Oxide   M. Ángel De la Vega Rodríguez 25/08 2.0.0 / 2.0.0 JA D/L - OSS
england Panda *1 Sebastiano Rebonato-Scott 26/07 2.0 / 2.0 JA D/L - OSS
canada Patricia, EAS   Adam Kulju 25/07 5 / 5 JA / 5 xtremeEAS D/L syzygy OSS
portugal Pawn   Pedro Rui Coelho 25/05 4.0 / 4.0.4 JA dev D/L 250809 syzygy OSS
sweden pawnocchio, tags   Jonathan Hallström 26/06 2.0.1 / 3.0 260705 Pre REPO *15 syzygy OSS / *2
usa Pawnstar   Jonny Reckless 26/07 0.13.593 - - OSS
belgium Pea   Warre Gevers 26/06 9.0 - - OSS
usa ² Peacekeeper   Kyle Zhang 24/06 3.01 / 3.01 JA REPO 250718 - OSS
usa Pedantic   JoAnn D. Peeler 24/09 2.1.0 - syzygy OSS
italy ² Pedone   Fabio Gobbato 21/04 3.21 - syzygy free
italy Perseus   Giovanni Manduca 25/04 1.1 / 1.1 JA D/L - OSS *2
russia Petrel, tags   Aleks Peshkov 26/06 S / 3.5 JA D/L *6 - OSS / *2
russia ² PeSTO   Ronald Friederich 20/01 2.210 / 2.210 JA REPO 240612 syzygy OSS *2
england Pingu   William Ching 24/12 5.0.0 / 5.0.0 JA D/L - OSS
brazil pirarucu   Raoni Campos 20/05 3.3.5 / 3.3.5 JA REPO 240430 - OSS *1 *2
germany PlentyChess, TC-85614, tags   Patrick Leonhardt 26/06 8.0.0 / 8.0.0 JA D/L syzygy OSS
england ² Polaris   Conor Anstey 23/06 1.8.1 / 1.8.1 JA REPO 240813 syzygy OSS *2
turkey Potential   Eren Araz 25/08 3.0.0 / 3.0.0 JA D/L - OSS *2
usa Pounce   Alex Flick 25/10 3.0.0 REPO *15 - OSS
germany Priessnitz   Kevin Feske 26/01 2.0.1 / 2.0.1 JA D/L - OSS *2
australia Princhess   Lana Samson (Jacob Jackson) 25/10 0.21.0 / 0.21.0 JA D/L syzygy OSS
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 / 251228a dev - - free *2
france Prune *BF T. GIROLAMI, J. BIENVENUE 26/07 4.0.1 / 4.0.1 JA D/L syzygy OSS / *2
poland Publius   Pawel Koziol 26/01 1.1 260109 REPO *15 - OSS
usa Puffin   Kurt Peters 24/11 5.0 REPO *15 - OSS
canada PZChessBot   Kevin Lu, William Ma 26/06 7.1 / 7.1 JA D/L syzygy OSS
slowakia Quanticade, rel   Martin Botka 25/12 3.0 / Phoenix 260717 dev D/L - OSS
belarus Quirky   Anton Kernozhitsky 25/11 3.0 / 3.0 JA D/L - OSS
japan usa Raphael, tags   Rei Meguro 26/06 4.2.0 / 4.3.0 260720 Pre REPO *15 - OSS
world Reckless, tags   the Reckless developers 26/03 0.9.0 / 0.10.0 260501 dev REPO *15 syzygy OSS
hungary Renegade *BF Krisztián Peőcz 26/06 1.3.1 REPO *15 - OSS
usa Rengar   Thomas Swayze 24/10 2.1.1 / 2.1.1 JA D/L - OSS
italy Revenge   Fabio Gobbato 25/01 4.0 - syzygy free *5
canada Revolver   Deshawn Mohan-Smith 26/05 2.0 / 2.0 JA D/L - OSS
bangladesh Rice   Rafid Ahsan 24/03 8.0.0 240318 REPO 250719 - OSS
russia usa ² Roc, Roc2 *22   Vadim Demichev, Tom Hyer 26/05 1.11 / 2.0.5 REPO *15 syzygy free *2
poland spain ² Rodent, GitHub   Pawel Koziol, Pablo Vazquez 21/04 IV: 0.22 / 0.33 JA D/L 250318 - OSS *2
netherland rofChade   Ronald Friederich 23/09 3.1 - syzygy free
germany RubiChess, net   Andreas Matthies 24/08 240817 / 250606 JA dev D/L syzygy OSS
india Rudim   Vishnu Bhagyanath 26/07 3.0.5 / 3.05 JA D/L - OSS
russia RukChess, net   Ilya Rukavishnikov 26/01 4.2.0 / 4.2.0 JA D/L - OSS
turkey Ruthorin *1 Emre Kalkan 26/07 1.9.9 - - OSS
czech usa Rykba, CB, web   Vasik Raylich 18/01 Fritz 16 180110 / 4.1 - *12 *2 *3 *21
england Sable *1 Ellie Fulterer 26/07 3.0.0 260721 - - OSS
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 ² Schneckbert   Nikolas Windheuser 25/04 3.0 / 3.0 JA D/L - OSS
germany israel Schönemann   Jochen Gehtab 25/12 0.5.0 / 0.5.0 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 CPU 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 (own site), GitHub   Fabien LETOUZEY 25/12 3.0.2 REPO *15 - 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
south_africa ShakeyBot *16, tags   Daniel Collins 26/06 S 2.1.0 / 2.0.0 - - OSS
china Shallow Guess   Zixiao Han 26/03 1.1.0 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 n.a. SmarThink   Sergei S. Markoff 18/02 1.98 - syzygy free *2
turkey Solo   Yunus Emre Yildriz 26/06 2.2.0 / 2.2.0 JA D/L - OSS
serbia belgium ² Sophix *13   Milos Tatarevic, N. Schmidt 26/01 1.0 - - OSS *2
usa Spaghet, net   Li Ying 24/08 BologNNese 1.0 / 1.1.3 JA dev D/L 251118 - OSS
germany Spike, GitHub   Ralf Schäfer, Volker Böhm 25/07 1.4.1 - *12 OSS *2
portugal Starzix - archived   Ricardo Pinto 25/04 6.1 / 6.1 JA D/L - OSS
france Stash, GitHub   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, web, Iv, net, tags   the Sf developers, authors 26/01 18 / 18 JA / 260720 dev D/L syzygy OSS
england Stormphrax   Conor Anstey 26/06 8.0.0 / 8.0.0 JA D/L syzygy OSS
romania Sturddle   Cristian Vlasceanu 26/02 2.5.0 - 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 Sykora *2 Sullivan Bognar 26/07 3.1 - - OSS
usa Tarnished, net, tags   Anik Patel 26/06 6.0 (Eternal) / 6.0 JA D/L - OSS
england Tcheran *1 Jonathan Gilchrist 26/07 13.0 REPO *15 syzygy OSS
sweden Texel, Dropbox   Peter Österlund 25/01 1.12 / 1.13a6 dev REPO *15 syzygy *10 OSS
netherland The Baron *18   Richard Pijl 23/05 3.451 xb - syzygy free *2
world Toga, WIKI *23   T. Gaksch, D. Kappe et al. 21/05 III: 0.3.12 / 0.3.12 JA REPO 240918 - OSS
netherland belgium ² Tomcat *24   Gunnar Harms, N. Schmidt 20/02 1.0 JA D/L 250716 - OSS *2
hungary tomitankChess, web   Tamás Kuzmics 26/07 7.0 (*.js incl. in sources) REPO *15 - OSS *1
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
italy Triumviratus, tags *1 Francesco Torsello 26/07 5.1 / 6.0 260716 Pre - - OSS
germany Truncator *16   Nikolas Windheuser 25/10 1.0 (Pesto) - syzygy OSS
brazil Tucano, net   Alcides Schulz 24/12 12.00 / 12.17 JA dev D/L 250715 syzygy OSS
brazil Tunguska   Fernando Tenorio 26/04 2.1 REPO *15 - 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
usa Ursus   Zander Chrown 26/07 1.0.0 - syzygy OSS
italy Vajolet2, web   Marco Belli 26/05 3.2 REPO *15 syzygy OSS
france ² Vault   Morgan HOUPPIN 25/04 S / 0.4.1 JA dev REPO 240602 - OSS
germany Velvet, tags   Martin Honert 24/11 8.1.1 / 9.0.0 JA dev7 D/L, D/L 250715 syzygy OSS
india Vengeance   Amar Thapa 23/05 3.1.0 / 3.1.0 JA REPO 240526 - OSS
scotland Viridithas, web, net   Cosmo Bobak 26/06 20.0.0 / 20.0.0 JA D/L + D/L syzygy OSS
usa Wahoo   Andrew Hockman 23/08 4.0.0 / 4.0.0 JA REPO 240428 syzygy OSS
usa Wasp   John Stanback 24/06 7.00 / 7.16 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
hungary WhiteCore   Balàzs Szilágyi 24/07 0.2 JA dev REPO 240702 - OSS
canada ² Willow   Adam Kulju 24/02 4.0.0.1 / 4.0 JA REPO 240426 - OSS
switzerland Winter   Jonathan Rosenthal 26/05 5.0 JA D/L *6 - OSS
serbia Xiphos   Milos Tatarevic 19/11 0.6 / 0.6.1 JA dev REPO 250801 syzygy OSS *2
usa Yakka   Christopher Crone 26/01 1.5 - - OSS
turkey Ynode   Orhan Öztürk 26/03 0234 - - free
england Yukari   Hannah Ravensloft 25/11  2025.11.1 JA D/L *6 - OSS
kurdistan Zahak - archived   Amanj Sherwany 22/05 10.0 / 10.0 JA D/L 250717 syzygy OSS
france Zangdar *1 Philippe CHEVALIER 26/07 7.0 / 7.0 JA D/L syzygy OSS
romania Zurichess, web (WayB), D/L   Alexandrou Mosoi 17/09 Nidwalden dev - - OSS *2
End of list, stronger engines released before 2015 not listed, like:

 slowakia Critter, italy Equinox, israel Junior, canada Naum, russia Quazar, belgium Sjeng, netherland Spark, usa Zappa = (+8)

Notes:
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- only one engine per programmer or group of programmers is counted = 258 (+8)
- listed are engines that are likely to be in the TOP-266 or close to TOP-266
- listed are no private engines - doesn't make sense -
- listed are no engines the name of programmer is unknown / unclear
- listed are CPU engines, no GPU only engines
- listed are no ChessBase "Native" engines, ChessBase own engine protocol
- listed are no derived Stockfish engines!? It is very likely that some of the engines listed here are derived
- from Stockfish or other engines?!
- listed are no engines an other programmer(s) set a Neural Network file, exception: NNCe
- ETOC-G: No engines are listed, due to errors a test is not possible, buglist
 - ETOC-G: No engines are listed, the final result is lesser as 10% (~ 2735 Elo)
- ETOC-G: No engines are listed, 10% or more of the games (130) to be played were lost in fewer than 45 moves
- new engines (released after July 07th, 2026, 00:00) are not included in this list.

*01 = JAVA based engine, Java-JRE v8 Upd 501, JDK v26.0.2, Node.js v26.5.0 (for Lozza, tomitankChess)
*02 = HCE (Hand Crafted Evaluation). If not HCE then NN = Neural Network
*03 = commercial product
*04 = Komodo & Dragon by Komodo v1 are freely available
*05 = Revenge v1 to v3 are commercial products, freely available since v4
*06 = GitHub compiles created by Jim Ablett = JA
*07 = EveAnn, Myrddin, OliThink mod. by J. Ablett use Neural Network Cerebrum = NNCe
 *08 = please use the install.bat on Scorpio GitHub site
 *09 = egbb bases (Chiron, DanaSah, Scorpio)
 *10 = gaviota bases (Chiron, DanaSah, Equinox, Myrddin + Texel in add. syzygy)
*11 = shredder bases (Shredder in add. syzygy)
 *12 = nalimov bases
 *13 = Xiphos derived (programmer of Xiphos = Milos Tatarevic)
*14 = Chiron runs under Windows 11 as 32bit engine only
*15 = older JA compiles are available
*16 = bitbit, Elixir, Truncator, Weak, ShakeyBot required:
*16 = libgcc_s_seh-1.dll, libwinpthread-1.dll, libstdc++-6.dll
*16 = can be found on: mingw-w64, GitHub (x86_64-posix-seh-msvcrt-rt)
*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 2.3.2a HCE is freely available
 *22 = Gull derived (programmer of Gull = Vadim Demichev)
*23 = Fruit derived (programmer of Fruit = Fabien LETOUZEY, web)
 *24 = Bobcat derived (programmer of Bobcat = Gunnar Harms)
*25 = Monolith required: libmmd.dll, svml_dispmd.dll


S = Sources available only
² = second program by the programmer or derived engine
n.a. = website not available
magenta = dev / Pre by the programmer(s) available = executable file(s)

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

Compiles by: JA = Jim Ablett, CE = Chris Euler, IP = IPman, DA = Dann Corbit, AB = Alex Brunetti
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 / 21

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