Free chessboard software for linux

Emacs Chess is an object-oriented library written in Elisp for manipulating chess objects (games, plies, positions, etc.), and for displaying them.
Main features:
- Emacs Chess is also an object-oriented library for manipulating chess objects (games, plies, positions, etc), and for displaying them. It supports a wide range of engine objects to use as move sources. This what allows chess.el to act as a chess client.
- chess-announce.el announces your opponents moves verbally, such as "knight takes at f4"provided you have "festival" installed.
- chess-sound.el is similar to chess-announce, but uses specific WAV files for each sound used. It takes up much more disk space, but is nicer to listen to. Available in English only at the moment.
- chess-irc.el provides a tiny IRC bot, allowing you to play games over IRC so long as your opponent enters moves in short algebraic notation. If they dont have chess.el, all they need is a regular chessboard, and a knowledge of SAN (short alegebraic notation).
- chess-ics.el lets you to play on Internet Chess Servers, using chess.el as your chessboard display (which means chess-announce works with it, etc). It has only been tested with FICS so far.
- chess-crafty.el, chess-gnuchess.el and chess-phalanx.el let you play against the Crafty, Gnuchess and Phalanx engines.
- chess-random.el will create Fischer Random positions to play against. Note that this feature only really works against opponents who are also using chess.el. Simply type "S" in the chessboard display buffer to setup a Fischer Random starting position.
- chess-network.el lets you play against other chess.el users directly, over a single open port on the server side. To be a server, you must have "netcat" installed, or be using Emacs 21.3 or higher (which supports server side network sockets). To be a client, all you need is Emacs 21.1 or higher.
- chess-link.el lets you tie two engines together, so that events from one are responded to by events from another. This can let you run a chess bot on your computer over any of the transport, or you can use it to pit two computer chess engines against each other.
- chess.el can even export chessboard display to other X servers, allowing you to play against people in your meeting room, even if they dont have Emacs installed!
Enhancements:
- This maintenance release includes several bugfixes.

w3Chess is a Web- and Mail- based chess board. I built this to play chess over Internet with my friends. If you play chess via E-Mail, you have several problems:
- You need a chessboard in your house for every opponent
- You could drop your board down an loose the actual piece positions
- You can set a piece wrong and your boards doesnt look like your opponents one anymore
I searched for such programs but the I only found chess-servers, or tools which depends on sql-databases and javascript.
But I hate Java-Script and I hate huge dependencies for small solutions.
Main features:
- few dependencies (its written in c)
- high compatiblity (its written in c, should also work under unfree Gaming Systems from Redmond)
- it should run fast (its written in c)
- it should need less system ressources (do i have to say it ?)
- it should display the actual board via (any) Web-Browser (no JavaScript, even lynx should do it)
- you should have the moves stored at home (E-Mail-Notifications....)
- you shouldnt be able to do wrong moves
- you shouldnt do moves if it is not your turn
- the administration should be easy (old games are removed after nn days)
- the usage should be easy (no "cosmetic" features, easy translation)
- you should be able to search for an opponent
- your pieces should be at the bottom
Supported languages:
- German
- English
- Italian, thanks to Carlo !
- Brazilian Portuguese, thanks to Fabio !
- Spanish, thanks to Pablo !
Enhancements:
- charset-Tag in Mail-Header