Editing GNU Chess (section)

== Features ==
GNU Chess 6.2.5 is rated at 2661 [[Elo rating system|Elo points]] on [[CCRL#Computer chess rating lists|CCRL]]'s 40-moves-in-2-minutes list.<ref>{{cite web|url=http://ccrl.chessdom.com/ccrl/404/cgi/engine_details.cgi?match_length=30&eng=GNU%20Chess%206.25%2064-bit|archive-url=https://web.archive.org/web/20230207062903/http://ccrl.chessdom.com/ccrl/404/cgi/engine_details.cgi?match_length=30&eng=GNU%20Chess%206.25%2064-bit|title=CCRL Blitz - GNU Chess 6.25 64-bit|archive-date=February 7, 2023}}</ref> For comparison, the [[Comparison of top chess players throughout history|strongest human player]], [[Magnus Carlsen]], has achieved an Elo rating of 2882. On the same list, [[Fritz (chess)|Fritz 8]] was rated at 2665 Elo,<ref>{{Cite web |url=http://ccrl.chessdom.com/ccrl/404/rating_list_all.html |title=CCRL Blitz - February 5, 2023 |access-date=6 April 2023 |archive-date=7 February 2023 |archive-url=https://web.archive.org/web/20230207062909/http://ccrl.chessdom.com/ccrl/404/rating_list_all.html |url-status=dead }}</ref> and that program in the 2004 [[Human–computer_chess_matches#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 [[Graphical user interface|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.
[[File:Gnuchess-terminal.png|thumb|GNU chess terminal graphic mode]]