Toga II

🗃️ Specifications

📰 Title:	Toga II	🕹️ / 🛠️ Type:	Tool
🗃️ Genre:	Puzzle	👁️ Visual:	Text
🏷️ Category:	Puzzle ➤ Board Game ➤ Chess ➤ Engine ➤ UCI only	🏝️ Perspective:	Third person
🔖 Tags:	Puzzle; Board Game; Chess Engine; UCI Protocol	⏱️ Pacing:	Turn-Based
🐣️ Approx. start:	2005-02-08	👫️ Played:	Single
🐓️ Latest:	2020-10-13	🚦 Status:	04. Released (status)
📍️ Version:	Latest: 4.0 / Dev: fb22f61	❤️ Like it:	9. ⏳️
🏛️ License type:	🕊️ Libre	🎀️ Quality:	7. ⏳️
🏛️ License:	GPL-2+	✨️ (temporary):
🐛️ Created:	2010-08-20	🐜️ Updated:	2024-06-22

📦️ Deliverables

📦️ Package name:	toga2	..... 📦️ Arch:
📄️ Source:		..... 📦️ RPM:
⚙️ Generic binary:		..... 📦️ Deb:
🌍️ Browser version:		..... 📦️ AppImage:
📱️ PDA support:		..... 📦️ Flatpak:
✨️ Not use:		..... 📦️ Snap:

🚦 Entry status

📰 What's new?:		👻️ Temporary:
💡 Lights on:		🎨️ Significant improvement:
👔️ Already shown:		💭️ New version published (to be updated):
🎖️ This work:		🚧️ Some work remains to be done:
👫️ Contrib.:	goupildb & Louis	🦺️ Work in progress:
🎰️ ID:	13210

📖️ Summary

📜️[en]:	A libre and multi-platform chess AI (an AI specialized in this type of games), developed from Fruit 2.1 (libre), quite powerful (estimated power of 2903 Elo for v.4.0, ranked 89th out of 2779 candidates at the CCRL 40/15, ranking "CCRL 404 - All engines" of January 16, 2021), communicating with the UCI protocol (the most common protocols are CECP aka Winboard/Xboard, and UCI). Its algorithm supports multiple processors.	📜️[fr]:	Une IA de jeu d'échecs (une IA spécialisée dans ce type de jeux) libre et multi-plateforme, développée à partir de Fruit 2.1 (libre), assez puissante (puissance estimée à 2903 Elo pour la v.4.0, classée 89ème sur 2779 candidats au CCRL 40/15, classement "CCRL 404 - All engines" du 16 janvier 2021), communiquant avec le protocole UCI (les protocoles les plus courants sont CECP aka Winboard/Xboard, et UCI). Son algorithme supporte les processeurs multiples.

🕸️ Links

🏡️ Website & videos
[Homepage] [Dev site] [Features/About] [Screenshots] [Videos t(202xxx) gd(202xxx) gu(202xxx) r(202xxx) lp(202xxx) g(202xxx) g[fr](202xxx) g[de](202xxx) g[ru](202xxx) g[pl](202xxx) g[cz](202xxx) g[sp](202xxx) g[pt](202xxx) g[it](202xxx) g[tr](202xxx)] [WIKI] [FAQ] [RSS: waiting] [Changelog 1 2 3]

💰 Commercial
• (empty)

🍩️ Resources
• (empty, license): [Homepage] [Dev site] 🎬️ g(202xxx)

🛠️ Technical informations
[PCGamingWiki] [MobyGames] [Chess Programming Wiki] [Computer Chess Rating Lists ("CCRL 404 - All engines")]

🦣️ Social
Devs (Jerry Donald Watson [fr] [en]): [Site 1 2] [Chat] [mastodon] [PeerTube] [YouTube] [PressKit] [Interview 1(202xxx) 2(202xxx)]
Devs (Thomas Gaksch [fr] [en]): [Site 1 2] [Chat] [mastodon] [PeerTube] [YouTube] [PressKit] [Interview 1(202xxx) 2(202xxx)]
Devs (Fabien Letouzey [fr] [en]): [Site 1 2] [Chat] [mastodon] [PeerTube] [YouTube] [PressKit] [Interview 1(202xxx) 2(202xxx)]
The Project: [Blog] [Chat] [Forums] [mastodon] [PeerTube] [YouTube] [PressKit] [reddit] [Discord]

🐝️ Related
[Wikipedia (Fruit & derivatives) [fr] [en] [de]]
[Debian/Ubuntu]

📦️ Misc. repositories
[Repology] [pkgs.org] [Generic binary] [Arch Linux / AUR] [openSUSE] [Debian/Ubuntu] [Flatpak] [AppImage(author's repo)] [Snap] [PortableLinuxGames]

🕵️ Reviews
[HowLongToBeat] [metacritic] [OpenCritic] [iGDB]

🕊️ Source of this Entry: [Site (date)]

🦣️ Social Networking Update (on mastodon)

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📖 Our entry: (homeless)

🥁️ Update:
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🕶️

📚️ Name is a

📕 Description [en]

📜️ "A libre, multi-platform, & quite powerful chess AI" 📜️ .

Toga II 4.0 based on Fruit 2.1 by Fabien Letouzey.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

🍥️ Debian:

Computer chess engine, calculates chess moves

Toga II is a computer game chess engine created by Thomas Gaksch. It has big chess knowledge, multi-processor support, and a good search algorithm. It is based on Fruit and is free. Experimental versions of Toga II running on computer clusters have competed in the World Computer Chess Championship.

Chess Programming WIKI:

Toga, (Toga II)

based on Fruit by Fabien Letouzey is a Fruit derivative by Thomas Gaksch, which appeared in early 2005 in test tournaments first without explicit mentioning its Fruit origin. Caused by clone suspicions and announcements, Gaksch apologized to the testers and original author, and continued with the public development Toga II according to the GNU General Public License v2.0.

As official Fruit derivative Toga II was used by Kai Himstedt as primary engine for his GridChess and Cluster Toga entities, competing the WCCC 2007 and WCCC 2008 with Fabien Letouzey and Thomas Gaksch mentioned as co-authors. Toga II 1.4.1SE by Chris Formula based on Toga II 1.4beta5c by Thomas Gaksch featured a parallel search where multiple threads share the hash table - a kind of early Lazy SMP. Toga CMLX is a Chess960 capable version by Teemu Pudas. Further development was done by Michel Van den Bergh, porting Toga II to Linux, subsequent Toga II versions were maintained by Jerry Donald, Toga Returns based on Toga II by Ben Tennison, while further Toga II offsprings were Grapefruit by Vadim Demichev, and Cyclone and TogaToy by Norman Schmidt.

With the advent of NNUE, Dietrich Kappe released Toga III 0.4 NNUE with a net based on depth 8 data from Toga II 4.0.2 [12] [13].

🌍️ Wikipedia:

Fruit is a chess engine developed by Fabien Letouzey. In the SSDF rating list released on November 24, 2006, Fruit version 2.2.1 had a rating of 2842. In the CEGT rating list released on January 24, 2007, Fruit version 2.2.1 had a rating of 2776.

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Derivatives

Although in 2007 Fabien Letouzey stopped the development of Fruit with version 2.3.1, the earlier open source 2.1 version provided the basis for many other programs.

Toga II

Toga II is a derivative created by Thomas Gaksch, currently continued by Jerry Donald Watson. It has more chess knowledge, multi-processor support, and perhaps a better search algorithm. It is based on Fruit 2.1 and is free. The strongest version is Toga II 4.0, released on 29 December 2017 by Jerry Donald Watson. Experimental versions of Toga II running on computer clusters have competed in the World Computer Chess Championship (WCCC). At about 80 ELO above Fruit 2.3.1, Toga II is the strongest Fruit derivative as of March 2014.

In 2008, forks of Toga II started to appear, like Grapefruit and Cyclone.

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📕 Description [fr]

Un moteur de jeu d'échecs dérivé de Fruit (de Fabien Letouzey), par Thomas Gaksch, puis par Jerry Donald Watson.

Toga II est une IA de jeu d'échecs (une IA spécialisée dans ce type de jeux) libre et multi-plateforme, développée à partir de Fruit 2.1 (libre), assez puissante (puissance estimée à 2903 Elo pour la v.4.0, classée 89ème sur 2779 candidats au CCRL 40/15, classement "CCRL 404 - All engines" du 16 janvier 2021), communiquant avec le protocole UCI (les protocoles les plus courants sont CECP aka Winboard/Xboard, et UCI). Son algorithme supporte les processeurs multiples.

Ressources et documentations disponibles : voir les fiches "Ressources - Echecs" et "Ressources - Echecs Orientaux".

Toga II 4.0 basé sur Fruit 2.1 de Fabien Letouzey.

Ce programme est un logiciel libre ; vous pouvez le redistribuer et/ou le modifier selon les termes de la licence publique générale GNU telle que publiée par la Free Software Foundation ; soit la version 2 de la licence, soit (à votre choix) toute version ultérieure.

🍥️ Debian:

Moteur de jeu d’échecs pour le calcul des mouvements

Toga II est un moteur de jeu d’échecs conçu par Thomas Gaksch. Il possède une solide base de connaissances de jeux, un bon algorithme de recherche et prend en charge plusieurs processeurs. Il est basé sur Fruit et est libre. Des versions expérimentales de Toga II utilisées sur des grappes d’ordinateurs ont concourues lors du championnat mondial de jeu d’échecs pour ordinateurs.

🌍️ Wikipedia:

Fruit est un programme d'échecs français développé par Fabien Letouzey.

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Programmes dérivés

Fruit étant un logiciel libre d'un niveau de jeu proche de celui des logiciels propriétaires, de nombreux programmes dérivés de son code ont été édités de façon plus ou moins légales. La notion de copyleft inhérente à la licence GNU GPL impose aux programmes dérivés les mêmes conditions de redistribution que le logiciel libre source. Parmi les programmes dérivés de Fruit on peut citer :

GNU Chess.

Toga II.

Thomas Gaksch publie en 2005 Toga II, un programme qui dès sa première version est d'une force comparable à celle des logiciels propriétaires, ce qui provoque des soupçons dans la communauté des échecs électroniques. On pense avoir affaire à un clone de Shredder ou de Fritz. Thomas Gaksch avoue la supercherie et publie son code source. La dernière version libre de Fruit datant de 2005, Toga II est maintenant développé à partir du code source de Glaurung, autre fork libre, Thomas Gaksch ayant réussi à faire cohabiter les deux algorithmes.

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