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Lichess (/ ˈ l iː tʃ ɛ s /; LEE-ches) [3] [4] is a free and open-source Internet chess server run by a non-profit organization of the same name. Users of the site can play online chess anonymously and optionally register an account to play rated games .
Rarely, decorative glass and marble boards are permitted for games conducted by national or international chess federations. Wooden boards are traditionally made of unstained woods that are light brown and dark brown in colour. To reduce cost, some boards are made with veneers of more expensive woods glued to an inner piece of plywood or chipboard.
Chess960 uses the same board and pieces as classical chess, but the starting position of the pieces on the players' home ranks is randomized, following certain rules. The random setup makes gaining an advantage through the memorization of openings unfeasible. Players instead must rely on their skill and creativity.
A Horde variant uses the opening setup shown in the diagram. [6] In this variant, White's pawns on the first and second ranks may advance one or two steps, provided that the path on the file is free. Unlike in regular chess, this does not have to be the pawn's first move. [7] Both Lichess and Chess.com have support for this variant.
The board is oriented so that the right-hand corner nearest each player is a light square; as a result the white queen always starts on a light square, while the black queen starts on a dark square. This may be remembered by the phrases "white on the right" and "queen on her color".
Forsyth–Edwards Notation (FEN) is a standard notation for describing a particular board position of a chess game. The purpose of FEN is to provide all the necessary information to restart a game from a particular position. FEN is based on a system developed by Scottish newspaper journalist David Forsyth.
Handicaps (or "odds") in chess are handicapping variants which enable a weaker player to have a chance of winning against a stronger one. There are a variety of such handicaps, such as material odds (the stronger player surrenders a certain piece or pieces), extra moves (the weaker player has an agreed number of moves at the beginning of the game), extra time on the chess clock, and special ...
[5] [6] It was soon after incorporated into the Middle East Wild Internet Server (MEWIS) and other smaller servers before being implemented at Chess Live and Internet Chess Club in 2000, Free Internet Chess Server in 2003 and Lichess in 2015. [7] [8] It was added to Chess.com in late 2020. In 2021, 4.9 million atomic chess games were played on ...