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CuckooChess is an advanced free and open-source chess engine under the GNU General Public License written in Java by Peter Österlund. CuckooChess provides an own GUI, and optionally supports the Universal Chess Interface protocol for the use with external GUIs such as Arena.
A chess engine generates moves, but is accessed via a command-line interface with no graphics. A dedicated chess computer has been purpose built solely to play chess. A graphical user interface (GUI) allows one to import and load an engine, and play against it. A chess database allows one to import, edit, and analyze a large archive of past games.
Most contemporary chess engines are command-line programs which generate chess moves, but which require a separate chess graphical user interface in order to display a chessboard. The main article for this category is Chess engine .
The engine's Elo rating fluctuates at around 1900 when playing orthodox chess in CCRL 40/40 chess engine tournament, which roughly corresponds to class A human player. [ 15 ] The author of the program has said "the goal of Fairy-Max is to make an entertaining but beatable opponent to play against in all kind of chess variants."
Torch is a closed-source chess engine created by Chess.com. [30] [31] Torch has finished second in several Chess.com Computer Chess Championship events, only behind Stockfish in each case. [32] It initially participated in the tournament under the name "Mystery". [31] [33] It is freely useable through Chess.com's analysis page. [34]
The meaning of the term "chess engine" has evolved over time. In 1986, Linda and Tony Scherzer entered their program Bebe into the 4th World Computer Chess Championship, running it on "Chess Engine," their brand name for the chess computer hardware [2] made, and marketed by their company Sys-10, Inc. [3] By 1990 the developers of Deep Blue, Feng-hsiung Hsu and Murray Campbell, were writing of ...
Universal Chess Interface (UCI) engines such as Fritz or Rybka may have a built-in mechanism for reducing the Elo rating of the engine (via UCI's uci_limitstrength and uci_elo parameters). Some versions of Fritz have a Handicap and Fun mode for limiting the current engine or changing the percentage of mistakes it makes or changing its style.
Crafty uses the Chess Engine Communication Protocol and can run under the chess interfaces XBoard and Winboard. Crafty is written in ANSI C with assembly language routines available on some CPUs, and is very portable. The source code is available, but the software is for "personal use" only and redistribution is only allowed under certain ...