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Internet Chess Server

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An Internet chess server (ICS) is an external server that provides the facility to play, discuss, and view the board game of chess over the Internet. The term specifically refers to facilities for connecting players through a variety of graphical chess clients located on each user's computer.

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Protocol and access

The ICS protocol is a simple, text-based variant of the TELNET protocol. It is sparsely documented and not standardised, although a few reference implementations and several clients exist.

In theory, an ICS can be accessed from any TELNET client. However, almost all users choose to play using a graphical client, called an interface. Currently, the most popular interface is XBoard (and its Windows counterpart, WinBoard).[citation needed] In recent years, however, it has lost ground to newer interfaces like Pychess and eboard.[citation needed] XICS is an X graphical interface to any Internet chess server. Unlike earlier text-based ICS clients, XICS allows the players to see the board and play pieces graphically, usually in a 2-D configuration.

In addition to standalone clients, many servers also offer Java interfaces that can be used directly from a Web browser. These are popular with new users and users of public computers.

Available servers

Over the years, several Internet chess servers have been created. The most popular are Chess.com, Chesshub.com, Lichess, ICC, Chess Craft Playchess.com, FICS, and Chesscube. Chess is also among the games previously offered by non-specialist site Yahoo! Games.

See also

References