Open Source Linux Chess Engines
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Chess Engines for Linux
View 9088 business solutionsBrowse free open source Chess Engines and projects for Linux below. Use the toggles on the left to filter open source Chess Engines by OS, license, language, programming language, and project status.
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Stockfish
UCI chess engine
Stockfish is a free, powerful UCI chess engine derived from Glaurung 2.1. Stockfish is not a complete chess program and requires a UCI-compatible graphical user interface (GUI) (e.g. XBoard with PolyGlot, Scid, Cute Chess, eboard, Arena, Sigma Chess, Shredder, Chess Partner or Fritz) in order to be used comfortably. Read the documentation for your GUI of choice for information about how to use Stockfish with it. Stockfish is a 11-time winner of the Top Chess Engine Championship. Stockfish is open source (GPLv3 license). That means you can read the code, modify it, and contribute back. You can use Stockfish on your computer or on your iOS or Android device. So you can get world-class chess analysis, wherever you are. The Stockfish engine features two evaluation functions for chess, the classical evaluation based on handcrafted terms, and the NNUE evaluation based on efficiently updatable neural networks. -
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Crafty Chess Interface
free open-source chess engine interface
latest portable distribution: https://sourceforge.net/projects/craftychessinterface/files/crafty_gui_10.7z/download -
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jose is a graphical Chess tool. >>> moved to https://peteschaefer.github.io/jose <<< You can store chess games in a database. You can view and edit games (including variations and comments). You can play against a plugged-in chess engine and use it for analysis. Features 3D board view.
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DreamChess
OpenGL chess game
A portable chess game consisting of an xboard-compatible OpenGL user interface with 2D and 3D board views and a chess engine. The primary targets are Windows, Mac OS X and Linux. -
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Chess-gambiteer
Chess training program playing gambits
Program to train against gambit play (*) with the computer, with a strength adjustable chess engine (Danasah, currently set at approx 1400 EL0 when playing against it). Also included now are two options to watch an engine e.g. the 'aggressive' Patricia5 (with gambits) play against another engine (eg IM level). The engine gambit books are made in such a way that 1) real lousy gambits are not played, and 2) the book is choosing a gambit line as often as possible, so for Black it might go for e.g. a Benko gambit or so and if you let it play with White, a lot of 1.e4 gambits can be played. Thereby, if you try a gambit yourself, the program might try to a counter-gambit (or sometimes an unconventional line). It will play weak against other engines, and it not meant as to play very strong/perfectly, but for human opponents, the gambit lines will most often result in entertaining -not boring- games, and require quite some concentration to avoid tactical mistakes. -
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Phalanx is a chess engine which understands the xboard protocol. It's suitable for beginner and intermediate players (I'm counting on your help to make it suitable for strong players!)
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Mediocre is a Java-based chess engine, implementing features like LMR, SEE, history and killer moves heuristics, transposition tables, internal iterative deepening, PVS search etc.
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NetChess
NetChess to play between two players over net or internet
NetChess is a Graphical User Interface (GUI) for playing chess game. This software can be used To play chess between two players over network using TCP/IP (LAN) or in internet/intranet (Network vs Network) To send instant message (chat) while playing chess To observe the chess game played between two players over network To play chess between two players on the same board As PGN, FEN, EPD converter. This can be used To convert PGN to FEN or EPD format To convert FEG to PGN or EPD format To convert EPD to PGN or FEN format As PGN, FEN or EPD gave viewer. Load multiple games. This can also be used to load the games and analyze using chess engines To play chess using chess engines (Supports engines with WinBoard 1, 2 and UCI 1, 2 protocols) Human vs Chess Engine with White side Human vs Chess Engine with Black side Chess Engine with White side vs Chess Engine with Black side on the same board Chess Engine with White side vs Chess Engine -
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Chess-Stats
Chess Stats is a slightly different way to analyze your chess games.
Chess Stats uses Stockfish 17.1 to analyze any game in a pgn file. It then saves analysis and shows statistics for blunders and best moves for every move of the game. Interactive chessboard shows continuations from any selected move. From the interactive board you can step through the continuation or make new moves with the mouse. New moves calculate new possibilities. Python script developed with Python 3.1 on Linux Ubuntu 22 External libraries that are not part of the standard Python are included so that dependencies don't have to be dealt with by the end user. -
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Chess Tools for Windows
Batch tools for creating Polyglot books and PGN-based statistics.
Open source scripts and tools for Windows. Every zip archive contains a readme file with further information. PGNStat and PGNXtract are batch processing tools for Windows. Simply unpack the zip archive into a directory of your choice. The batch files require free and open source third-party tools. These are not included in the zip archives and must be downloaded separately. An alternative download link, where all third-party tools are already integrated, can be found in the readme files. -
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ChessbrainVB
EXCEL VBA chess engine with chess board
VBA chess engine for EXCEL / WORD / POWERPOINT ( level: 2200 ELO ) with chess board GUI. Full EXCEL install needed (no viewers or OpenOffice) also: VisualBasic 6 compile for winboard (2750 ELO), needs a chess GUI like ARENA latest version here: https://github.com/RZulu54/ChessBrainVB/releases -
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BagaturChess
Java Chess Engine
This is UCI Chess Engine writen in Java. Since version 1.4 (inclusive) the project was moved to https://github.com/bagaturchess/Bagatur -
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GreKo
Chess engine
Winboard/UCI chess engine -
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JChess
The Java Chess Engine
This library is an attempt to create a flexible chess engine using the Java programing language. The main diference than others chess engine's is that it is only a library, and it can be attached to any program, including a web application. If you are interested to contribute please contact me. Francisco Rafael Del Roio <francipvb@hotmail.com>. -
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pythchess
Python chess engine
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c-board
A console/ncurses chess engine frontend and PGN editor.
CBoard (Curses/Console Board) is an Ncurses frontend to chess engines supporting the XBoard protocol. Supports reading and writing PGN including roster tags, RAV, FEN, NAG and comments, lots of configuration options, UTF-8, different board sizes depending on the terminal and more. -
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Fen2Pdf
Tool for chess teachers to create PDF files with chess diagrams in it
Tool for chess teachers to create PDF files with chess diagrams in it. 1) Create a pgn file with chess diagrams (FEN notation) in it (e.g by using lichess) 2) Open the Fen2Pdf and select the folder containing the pgn(s) 3) Click start. Fen2Pdf detects the pgn files in it and creates a pdf file You can now print this file and hand the exercises over to your students Extra features: * Mirror the positions. This is handy if you want the same problems presented for the other color for educational purposes. You could present the same set of exercises in 2 different ways! * You can toggle the display of page numbers * The selected pgn folder is saved for next time * The title on the pages is the name of the pgn (without .pgn) -
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An open source chess engine in C, released under the GPL. Compatible with the XBoard and UCI interface protocols to link to a GUI or other chess arbiter.
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olivechess
a UCI chess engine
OliveChess is a simple chess engine compatible with modern chess interfaces such as ChessBase products, Arena and XBoard/Winboard. The engine supports UCI and XBoard protocols. Note: in order to use it as an xboard engine you may need Polyglot tool to be installed first -
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Conqueror Chess Engine
A powerful chess engine written in C++
A powerful chess engine written in C++. It currently implements hybrid board representation, alphabeta pruning, quiescence search, static evaluation, legal move generator, iterative deepening, MVV/LVA move reordering, makemove, unmakemove and uci move representation standard, tapered evaluation. Elostat gives the current version an ELO of 2100 measured over 50 games. -
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PasKnight
Chess engine written in Pascal with an UCI interface.
PasKnight is a UCI compatible chess engine. It does not have a graphical interface of its own; instead, it runs as a console application that communicates via text commands with a GUI (like Arena, CuteChess, or WinBoard). PasKnight is written in Pascal using Lazarus & Free Pascal compiler. Executables are provided for Windows, Linux and macOS. Elo of the engine v1.01 is around 2679. See https://computerchess.org.uk/4040/index.html -
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Simontacchi is a Winboard/UCI compatible chess engine that intends to grow via development community involvement. The goal of the project is to create a chess engine that rivals the strongest commericial and amateur programs.
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rodent chess
UCI chess engine
Rodent is an UCI chess engine based on Sungorus by Pablo Vazquez, 300 Elo stronger than its predecessor. It allows setting up different personalities and to adjust playing strength.
