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  2. Lichess - Wikipedia

    en.wikipedia.org/wiki/Lichess

    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.

  3. Chess rating system - Wikipedia

    en.wikipedia.org/wiki/Chess_rating_system

    The Glicko system is a more modern approach, which was invented by Mark Glickman as an improvement of the Elo system. It is used by Chess.com, Free Internet Chess Server and other online chess servers. The Glicko-2 system is a refinement of the original Glicko system and is used by Lichess, Australian Chess Federation and other online websites.

  4. Elo rating system - Wikipedia

    en.wikipedia.org/wiki/Elo_rating_system

    Few video games use the original Elo rating system. According to Lichess, an online chess server, the Elo system is outdated, with Glicko-2 now being used by many chess organizations. [71] PlayerUnknown’s Battlegrounds is one of the few video games that utilizes the very first Elo system.

  5. Online chess - Wikipedia

    en.wikipedia.org/wiki/Online_chess

    The first chess website which allowed playing through a graphical interface, was Caissa.com (known at the time as Caissa's Web) which launched in 1995. [4] Since then, a number of chess websites have been developed. These include Chess.com, Lichess, and chess24, which were the largest chess websites as of 2021, though chess24 has since closed ...

  6. Play Chess Online for Free - AOL.com

    www.aol.com/games/play/masque-publishing/chess

    Play free chess online against the computer or challenge another player to a multiplayer board game. With rated play, chat, tutorials, and opponents of all levels!

  7. Threefold repetition - Wikipedia

    en.wikipedia.org/wiki/Threefold_repetition

    In chess, the threefold repetition rule states that a player may claim a draw if the same position occurs three times during the game. The rule is also known as repetition of position and, in the USCF rules, as triple occurrence of position. [1]

  8. History of chess - Wikipedia

    en.wikipedia.org/wiki/History_of_chess

    Internet chess servers have existed since 1992 with the creation of the subscription service Internet Chess Club, [107] but today the majority of top-level players have moved to freemium websites like Chess.com (founded in 2007) and, to a lesser extent, free website Lichess (launched in 2010). These websites feature quick pairing systems and ...

  9. Chess annotation symbols - Wikipedia

    en.wikipedia.org/wiki/Chess_annotation_symbols

    On certain Internet chess servers, such as Chess.com and Lichess, this kind of move is marked as an "inaccuracy", denoting a weak move, appearing more regularly than with most annotators. A sacrifice leading to a dangerous attack that the opponent should be able to defend against if they play well may receive a "?!".

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