Chess-Engines

Last changes: June 08th, 2026 (14:45)
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goto end of site (Notes) ................. !! Well-assorted by: Release date of engines

Obligation: Chess programming WIKI, RWBC (chronology)
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 (36)
Arena 3.5.1, Banksia 0.58 RC1, BearChess 1.9.1.0, CB-Emu 260531, CCRL 0.2.0, ChessMD 1.0,
ChessX 1.6.10, Coliseum 3, CuteChess 1.4.0, CuteChess QOL 1.1, en-croissant 0.15.0,
HIARCS-Ch.-Explorer-Pro 1.5.2, Hires-Ch.-Trainer 1.1.0, JFXChess 5.0.0, LiGround 0.6.0,
LINEACHESS 3.2, LittleBlitzer 2.77, Lucas-Chess R2.21-FP19a, Lucas-Chess R6.0.0.35,
Myracle 1.0 b65, Nibbler 2.5.8, Obsidian-Ch.-Studio 3.0.18, Pawn-Appetit 0.12.1,
Qapla 0.2.0, Scid 5.2, Scid vs. PC 4.27, Scid Community 5.1.3.47, Shredder 13,
Swiss-Chess 9.64, Winboard 4.9.0

ChessBase: Fritz v20-upd.12, Fritz v21-upd.0, ChessBase v18-upd.18, ChessBase v26-upd.7
CHESS OK: Aquarium 2026, Chess-Assistant 2026

Tools: Norm's 40H Chess-Tools 260525, PGN-Extract 26-04
Endgame: syzygy, others, Logos: Chess-Cache		 ETOC-G home
 Engine Test Operating Center-Gutweiler
June 08th, 2026 (10:30)

czech Cheng 4.48a
 t124: html, sto (16 games)
Updated every 3 minutes!
rankings, diary d053, buglist, checkfile


37,27% tested (101 out of 271)

 

Most of the current TOP-271 available engines included!
 Well-assorted by: Alphabetic order of engines
 June 08th, 2026 (10:30): D/L = 0,193Mb, this file + 310 Shredder *.eng examples
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260 (+11) Engines Rank Programmer(s) Date Version(s) Jim Ablett Endgame Status
lithuania 4k.c   Gediminas Masaitis 26/06 9.0 260606 - - OSS *2
world 4ku   the 4ku developers 24/08 5.1 240829 / 5.1 JA REPO 240910 - OSS *2
argentina Aconcagua   Gabriel Tarifa 26/06 5.2.0 - - OSS *2
england Admete   Kylie MacFarquharson 25/06 1.8.0 REPO *15 syzygy OSS
england ² Akimbo 06# Jamie Whiting 24/03 1.0.0 / 1.1.0 JA dev 241218 D/L - OSS
usa Aku   Hoa T. Vu 25/07 250709 / 250709 JA D/L - OSS
italy Alexandria, net 04# 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 20# Richard DELORME 21/12 3.4 / 3.4 JA REPO 231221 - OSS *2
andorra Andscacs (WayB), web 18# 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 06# Jon Dart 26/04 S 25.4 / 25.3 / 25.4 JA D/L syzygy OSS
norway Arcanum   Lars Murud Aurud 26/05 2.8 REPO *15 syzygy OSS
austria Astra 04# 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
usa Aurora   Cai Winston 26/05 1.27.0 MCTS / 1.27.0 MCTS JA D/L 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 11# Krasimir Topchiyski 26/05 5.5c REPO *15 syzygy OSS *1
usa Berserk, TC-83560 03# 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 06# Alex Morozov 25/02 7.4 - - OSS
syria Bread   Nour Berakdar 26/05 3.1.0 / 3.1.0 JA D/L syzygy OSS
usa Byte-Knight   Paul Tsouchlos 26/05 4.0.0 - - OSS *2
usa Cadie   Martin Wyngaarden 25/03 2.1 / 2.1 JA D/L - OSS *2
poland Caissa 04# Michal Witanowski 26/04 1.25 / 1.25 JA D/L syzygy OSS
spain ² Caligula *18, Cerebrum v2.0   P. Castro, A. Valverde, D. CARTEAU 26/03 7.0 NNCe xb REPO *15 *6 " free* 27
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   Anany Tanwar 26/04 3.0.0 / 3.0.0 JA D/L - OSS
argentina Ceibo   Federico Rojo 23/12 1.0 - 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 20# 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 20# 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 19# 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, Rebel 06# Chris Whittington, Ed Schröder 26/01  2.0 / 2.1 EAS / Extreme - - free
italy n.a. Chiron 18# Ubaldo Andrea Farina 22/01 5.01 w32 220113 *14 - *9 *10 *2, *3
germany brazil Cinder 05# Bruno Dutra 25/12 0.4.1 REPO *15 syzygy OSS
usa Clarity   Joseph Pasfield 25/07 8.0.0 / 8.0.0 JA D/L syzygy OSS
world Clockwork, GitHub: D/L 12# the Clockwork developers 26/06 260608 dev - - OSS *2
romania Clover 04# 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 240221 - OSS *2
england Colossus   Martin Bryant 25/06 2025b - syzygy free *2
poland Combusken - archived 15# 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 00# Prof. Robert M. (Bob) Hyatt 20/02 25.6 JA xb D/L 250901 syzygy OSS *2
wales Cwtch 14# Colin Jenkins 26/04 5 - - OSS
spain DanaSah 16# Pedro Castro 23/06 9.1 / 9.1 JA D/L 250807 *9 *10 OSS
germany Deep iCE 20# 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 19# 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
germany DisasterArea (WayBack), REPO   Jochen Peussner 16/07 1.65 - syzygy free *2
netherland Dog, GitHub, tags   Folkert van Heusden 25/12 4.10.2 REPO *15 syzygy OSS
usa Dragon by Komodo, Iv, CB 04# Don Daily, et al. 23/10 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 07# 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 10# Andrew Grant 23/02 14.00 IP / 14.31 JA dev REPO 240303 syzygy OSS *3
netherland Euwe   Joost Houben 25/03 2.1.0 / 2.1.0 JA D/L syzygy OSS *2
spain EveAnn, Cerebrum v2.0 15# Andrés Valverde, D. CARTEAU 26/05 5.0 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
germany Fatalii   Patrick Heck 26/05 0.10.1 REPO *15 - OSS *2
belgium Fire, Firefather projects, web 07# Norman Schmidt 25/08 10 / 10 JA D/L - OSS
usa Fizbo *17 17# Youri Matiounine 17/12 2.0 / 2.0 JA D/L 260405 syzygy OSS
usa FoxChess   Nathan Faltermeier 26/04 1.1 - - 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 06# J.-F. ROMANG, D. RABEL 26/02 4.1.3 - syzygy free
spain Gilipol 19# José Carlos Martínez Galán 26/06 2.00 / 2.00 JA D/L syzygy OSS
germany Ginkgo, CB 05# 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   Gabriel Montes 26/01 S / 2.0.0 JA D/L - OSS *2
norway Grail   Jørgen Hanssen 26/05 2.0.0 - syzygy OSS
russia Gull, WIKI   Vadim Demichev 14/04 3 - - OSS *2
russia spain Gull *23   ", Jose Maria Velasco 16/05 3.1 JV - syzygy "
russia italy Gull *23   ", Basil Falcinelli 16/05 3.0 BF - " "
india Gyatso   Gyatso Neesham 26/06 1.4.0 - - OSS
finland Hakkapeliitta 20# Mikko Aarnos 16/04 TCEC v2 REPO *15 syzygy OSS *2
australia Halogen, net, tags 04# Kieren Pearson 26/02 16 / 16.5.0 Pre REPO *15 syzygy OSS
usa philippines Hannibal   Sam Hamilton, Edsel Apostol 18/12 S / 181202 JA dev D/L 250916 - OSS *2
usa Hardfiskur   Tyler Zhang 25/03 250329 JA rev 98eab6f D/L - OSS *2
italy Heimdall, GitHub   Mattia Giambirtone 25/09 1.4.2 REPO *15 - OSS
england Hiarcs 14# Mark John Uniacke 24/12 15.4 - syzygy *2 *3
netherland Hobbes 04# Dan Kelsey 26/05 2.1 / 2.1 JA 260528 D/L - OSS
usa Horsie 04# 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 06# Volodymyr Shcherbyna 24/12 S 3.6.5 / 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 04# 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 17# Daniel ANULIERO 25/11 4.5 - syzygy free
poland Jackal 10# Tomasz Jaworski 26/03 2.0.0 MCTS REPO *15 - OSS
germany Jacky Chess 20# Matthias Lang 25/12  25.12 / 25.12 JA D/L - OSS *1 *2
bangladesh ² Jet   Rafid Ahsan 24/03 1.2 - - OSS
france KnightX 20# Christophe JOLLY 26/05 4.91 - *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 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 14# 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 PUCT - syzygy OSS
germany Leorik 10# 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 REPO *15 - OSS
usa Lux   Sidhant Roymoulik 26/04 5.0 REPO *15 - OSS
spain Lynx, tags   Eduardo Cáceres 25/10 1.11.0 REPO *15 - OSS
usa Maelstorm   Saigautam Bonam 25/08 3.3.0 REPO *15 - OSS
jordan Malika   Fauzi Akram Dabat 26/05 1.116 - 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 08# 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 *26   Jonas Mayr 26/04 3 - syzygy OSS *2
england Monty, GitHub: D/L --- Jamie Whiting 26/05 260512 MCTS - - OSS
czech Motor 05# 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 18# John Merlino, D. CARTEAU 26/04 0.95 NNCe xb / 0.95 NNCe JA xb D/L *10 OSS *7
germany Nalwald   Jost Triller 24/07 19 / 250310 JA dev D/L - OSS *2
germany Nemorino, net 11# 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
italy Nu-chess, D/L   Filippo Marfe 21/10 1.0 - - free *2
italy Obsidian, net, TC-84272 04# 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 20# Oliver Brausch, JA, D. CARTEAU 25/09 5.11.9 / 5.11.9 NNCe JA-v4 D/L 251124 - OSS *2 *7
france Orion, Cerebrum v2.0 19# 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   Sebastiano Rebonato-Scott 25/08 1.1.1 250819 REPO *15 - 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 04# Jonathan Hallström 26/01 1.9.2 / 2.0 260606 Pre REPO *15 syzygy OSS / *2
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 13# Aleks Peshkov 26/06 S / 3.5 JA + 2.4 JA D/L, 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 20# Raoni Campos 20/05 3.3.5 / 3.3.5 JA REPO 240430 - OSS *1 *2
germany PlentyChess, TC-85614, tags 03# Patrick Leonhardt 25/09 7.0.0 / 7.0.37 dev REPO *15 syzygy OSS
france Pluto, web 20# Ludovic DEBEVER 25/07 1.0.1 - - OSS
england ² Polaris 20# 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 251228a dev / 0.6.8 - - free *2
france Prune 13# T. GIROLAMI, J. BIENVENUE 26/02 3.2.1 REPO *15 - 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 26/05 7.0 / 7.0 JA D/L syzygy OSS
germany Qapla   Volker Böhm 25/05 0.3.2 250517 / 0.3.2 JA D/L *22 OSS *2
slowakia Quanticade, rel, tags 04# Martin Botka 25/12 Cronus 3.0 / Phoenix 260524 dev D/L - OSS
belarus Quirky   Anton Kernozhitsky 25/11 3.0 260518 REPO *15 - OSS
japan usa Raphael 04# Rei Meguro 26/05 4.1.1 / 4.1.1 JA D/L 260525 - OSS
world Reckless, tags 03# the Reckless developers 26/03 0.9.0 / 0.10.0 260501 dev REPO *15 syzygy 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 06# 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 *23   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 05# Andreas Matthies 24/08 240817 / 250606 JA dev D/L syzygy OSS
russia RukChess, net   Ilya Rukavishnikov 26/01 4.2.0 / 4.2.0 JA D/L - OSS
turkey RuthIron, web   Emre Kalkan 26/02 21.9.6.7 - - OSS
czech usa Rykba, CB, web 19# Vasik Raylich 18/01 Fritz 16 180110 / 4.1 - *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 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 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 17# 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 18# Alexander WIMMER 25/01 1.2c REPO *15 - OSS
usa Serendipity 08# Shawn Xu 25/01 1.0 / 1.0 JA D/L - OSS *1
china Shallow Guess   Zixiao Han 26/03 1.1.0 REPO *15 - OSS
russia Shallow2, GitHub   Dimitry Sultanov 22/08 5 / 5 JA dev D/L 251008 - OSS *2
germany Shredder 00# Stefan Meyer-Kahlen 16/10 13 - syzygy *11 *2 *3
france Simbelmyne 17# Sam ROELANTS 24/08 1.10.0 / 1.10.0 JA D/L 250904 - OSS *2
usa Slow Chess Blitz 08# 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 20# Sergei S. Markoff 18/02 1.98 - syzygy free *2
turkey Solo   Yunus Emre Yildriz 26/06 2.2.0 REPO *15 - 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 04# Ricardo Pinto 25/04 6.1 / 6.1 JA D/L - OSS
france Stash, GitHub 10# 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 03# the Sf developers, authors 26/01 18 / 18 JA / 260606 dev D/L syzygy OSS
england Stormphrax 04# Conor Anstey 25/06 7.0.0 / 7.0.17 JA dev D/L 250801 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   Sullivan Bognar 26/03 0.2.2 - - OSS
usa Tarnished, net, tags 04# Anik Patel 26/02 5.0 (Hero) REPO *15 - OSS
england Tcheran 06# Jonathan Gilchrist 26/05 12.0 REPO *15 syzygy OSS
sweden Texel, Dropbox 08# 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
usa Titan bug Jeffrey Powell 24/06 1.1 / 250628 JA dev D/L - OSS
world Toga, WIKI *24   T. Gaksch, D. Kappe et al. 21/05 III: 0.3.12 / 0.3.12 JA REPO 240918 - OSS
netherland belgium ² Tomcat *25   Gunnar Harms, N. Schmidt 20/02 1.0 JA D/L 250716 - OSS *2
hungary tomitankChess, web 20# Tamás Kuzmics 26/04 6.0 (*.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
germany Truncator *16   Nikolas Windheuser 25/10 1.0 (Pesto) - syzygy OSS
brazil Tucano, net 09# 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 05# Ivan Maklyakov 25/09 3.42a / 3.42a JA D/L syzygy OSS
italy Vajolet2, web 17# 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 05# Martin Honert 24/11 8.1.1 / 8.1.1 JA / 9.0.0 JA dev7 D/L, D/L 250715 syzygy OSS
india Vengeance 20# Amar Thapa 23/05 3.1.0 / 3.1.0 JA REPO 240526 - OSS
scotland Viridithas, web, net 04# Cosmo Bobak 26/01 19.0.1 REPO *15 syzygy OSS
usa Wahoo   Andrew Hockman 23/08 4.0.0 / 4.0.0 JA REPO 240428 syzygy OSS
usa Wasp, web-mirror-dev 08# John Stanback 24/06 7.00, 7.15 dev 260416 - 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 09# 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 08# 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 13# 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 14# Amanj Sherwany 22/05 10.0 / 10.0 JA D/L 250717 syzygy OSS
france Zangdar 07# Philippe CHEVALIER 26/02 6.1.1 REPO *15 syzygy OSS
romania Zurichess, web (WayB), D/L 20# Alexandrou Mosoi 17/09 Nidwalden dev - - OSS *2
End of list, stronger engines released before 2015 not listed, like:

 slowakia Critter / 19#, italy Equinox / 19#, argentina Gaviota, israel Junior / 20#, MinkoChess, canada Naum / 20#,
 russia Quazar / 20#, belgium Sjeng, netherland Spark / 20#, canada Thinker, usa Zappa / 20# = (+11)

Notes:
goto start of site

- only one engine per programmer or group of programmers is counted = 260 (+11)
- listed are engines that are likely to be in the TOP-271 or close to TOP-271
 - listed are engines whose playing strength is estimated to be higher than approximately ~ 2735 Elo
- 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!? I think many engines listed here are derived Stockfish engines?!
- listed are no engines an other programmer(s) set a Neural Network file, exception: NNCe
- engines with the same version number but a different Neural Network file are not tested

*01 = JAVA based engine, Java-JRE v8 Upd 491, JDK v26.0.1, Node.js v26.3.0 (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 = Caligula, 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 (Caligula, Chiron, DanaSah, Scorpio)
 *10 = gaviota bases (Chiron, DanaSah, Equinox, Gaviota, MinkoChess, 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 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 = own bitbases (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 = 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

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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Rank
01#  General Field Marshal ***** ... represents a goal!
02#  General of Engines **** ... perhaps possible in 2026?
03#  Lieutenant General ***
04#  Major General **
05#  Brigadier General *
00#  General (Ret.) Ret for Retired ... Honorary title!
---
06#  Colonel
07#  Lieutenant Colonel
08#  Major
09#  Captain
10#  First Lieutenant
11#  Second Lieutenant
---
12#  Sergeant Major
13#  Master Sergeant
14#  Sergeant First Class
15#  Staff Sergeant
16#  Sergeant
17#  Corporal
18#  Specialist
19#  Private First Class
---
20#  Private
007  Agent-Mystery

20#  Highlighted in light blue = since my last test-run one or more newer version(s) have been released.
If I encounter problems during testing, the bug entry appears.


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A tool to help you find TOP chess engines faster!