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 GNU Chess 6.0.0 running with the XBoard front end, v. 4.1.5. | |
| Developer(s) | GNU Project |
|---|---|
| Initial release | 1984 |
| Repository | |
| Operating system | Linux, Unix, macOS, Windows |
| Type | Computer chess |
| License | 2010[a]: GPL-3.0-or-later 1992[b]: GPL-2.0-or-later 1986: Chess-GPL[c][2][3] |
| Website | www |
| This article is part of the series on |
| Chess programming |
|---|
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GNU Chess is a free software chess engine and command-line interface chessboard. The goal of GNU Chess is to serve as a basis for research, and as such it has been used in numerous contexts.
GNU Chess is free software, licensed under the terms of the GNU General Public License version 3 or any later version, and is maintained by collaborating developers. As one of the earliest computer chess programs with full source code available, it is one of the oldest for Unix-based systems and has since been ported to many other platforms.
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Transcription
Features
GNU Chess 6.2.5 is rated at 2661 Elo points on CCRL's 40-moves-in-2-minutes list.[4] For comparison, the strongest human player, Magnus Carlsen, has achieved an Elo rating of 2882. On the same list, Fritz 8 was rated at 2665 Elo,[5] and that program in the 2004 Man vs Machine World Team Championship beat grandmasters Sergey Karjakin, Veselin Topalov and reached a draw with Ruslan Ponomariov.
It is often used in conjunction with a GUI program such as XBoard or GNOME Chess, where it is included as the default engine. Initial versions of XBoard's Chess Engine Communication Protocol were based on GNU Chess's command-line interface. Version 6 also supports the Universal Chess Interface (UCI). Since version 6.1 GNU chess supports a graphical mode for terminal emulators.
History
The first version of GNU Chess was written by Stuart Cracraft. Having started in 1984 in collaboration with Richard Stallman prior to his founding of the GNU Project, GNU Chess became one of the first parts of GNU.[citation needed]
GNU Chess has been enhanced and expanded since. Versions from 2 to 4 were written by John Stanback. Version 5 of GNU Chess was based on the Cobalt chess engine written by Chua Kong-Sian.[6]
In 2011, GNU Chess transitioned to version 6, which is based on Fabien Letouzey's Fruit 2.1 chess engine. According to CEGT[7] version 5.60 of this code base is stronger than Fruit 2.3, the latest version of that chess engine.
See also
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Notes
References
- ^ Antonio Ceballos Roa (14 July 2021). "GNU Chess 6.2.9 released". Retrieved 18 July 2021.
- ^ "GNU Chess General Public License". 1986.
- ^ Yigit, Ozan (17 December 1986). "yetti's Christmas/New Year goodies (gnu chess)". Newsgroup: ont.general.
- ^ "CCRL Blitz - GNU Chess 6.25 64-bit". Archived from the original on 7 February 2023.
- ^ "CCRL Blitz - February 5, 2023". Archived from the original on 7 February 2023. Retrieved 6 April 2023.
- ^ Cracraft, Stuart (10 October 1999). "GNU Chess 5". Google Groups.
- ^ "The CEGT rating list". Archived from the original on 8 March 2011.
External links
This page was last edited on 26 April 2024, at 00:26