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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 ...
The Chessmaster 2000 is a computer chess game by The Software Toolworks. It was the first in the Chessmaster series and published in 1986. It was released for Amiga, Apple II, Atari 8-bit computers, [2] Atari ST, ZX Spectrum, Commodore 64, Amstrad CPC, MSX, Macintosh, and IBM PC compatibles.
One particular type of search algorithm used in computer chess are minimax search algorithms, where at each ply the "best" move by the player is selected; one player is trying to maximize the score, the other to minimize it. By this alternating process, one particular terminal node whose evaluation represents the searched value of the position ...
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.
Chessmaster 5000 uses a 32-bit chess engine and can be optimized for stronger play if used with a Pentium chip. The computer opponent can adopt over 70 different styles of famous grandmasters. The player can also design their own style for the computer. The multiplayer supports hotseat, network, and online play. [7]
Popeye is a chess problem-solving software accommodating many fairy chess rules and able to investigate set play and tries. It can be used with several operating systems and can be connected to several existing graphical interfaces since it comes with freely available source code, cf. popeye on GitHub. Since its origin, Popeye was designed as a ...
Sargon III was a complete rewrite from scratch. Instead of an exchange evaluator, this version used a capture search algorithm.Also included was a chess opening repertoire. . This third version was written originally for the 6502 assembler and was commercially published by Hayden Software in
A 6-bit "from" register searches the board for friendly pieces. Once a friendly piece is found, a ∆xy move-offset counter provides a bit-code for the move offset, e.g. (2,2) for a bishop or (2,0) for a rook. This offset is combined with the contents of the "from" register and moved to a 6-bit "to" register.