Open Source Windows Chess Engines

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.

Cassandre is an extensible chess engine written in C++, it is Winboard/XBoard compliant.

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.

latest portable distribution: https://sourceforge.net/projects/craftychessinterface/files/crafty_gui_10.7z/download

yet another UCI chess engine

Chess engine code name "Gull"

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.

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.

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.

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!)

UCI chess engine written in object pascal

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. The elo of version 2.0.0 is around 3000. The elo of the engine v1.01 is around 2679. See https://computerchess.org.uk/4040/index.html

Super Micro chess engines are a series of world record small source and executables programs able to play the famous "King's Game" (both with simplified and full FIDE support)! Please refer to the official home page for more details: http://smmax.sf.net.

Redqueen is an UCI (Universal Chess Interface) only compatible chess engine written in C++.

Frittle is an open source amateur Java Chess Engine that supports the XBoard/WinBoard Chess Engine Communication Protocol (version 2).

Small potato is a IETF protocol version 2 compliant chess engine, to be used with XBoard/WinBoard style interfaces.

Witz is a chess program that is designed to work with a Winboard interface.

MinkoChess is a multiplatform chess engine written in C++.

Winboard/UCI chess engine

This tool allows several bot customizations: - Load all the chess engine settings - Change avatar for any bot - Analyse player's games to get: * Player max elo * Game style (aggressive, positional, etc.) * Preferred opennings - Choose the closest openning book for a player - Save openning book based on player's game stats - Automtically backup bot with with possibility to restore settings Future improvements: - Improve .pgn analysis using external engine or refined position evaluation - Allow to save in either CM10 (best compatibility) or CM11 (more features) - Add tools to create new lessons with audio support

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

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)

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.

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.