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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. Online chess - Wikipedia

    en.wikipedia.org/wiki/Online_chess

    Chess.com saw more than twice as many account registrations in November as it had in previous months, and the number of games played monthly on Lichess doubled as well. [10] There was also a demographic shift in players, with female registration on Chess.com shifting from 22% of new players to 27% of new players.

  4. Outline of chess - Wikipedia

    en.wikipedia.org/wiki/Outline_of_chess

    1 king – most important piece, and one of the weakest (until the endgame). The object of the game is checkmate, by placing the enemy king in check in a way that it cannot escape capture in the next move. On the top of the piece is a cross. 1 queen – most powerful piece in the game, with a relative value of 9 points. The top of the piece is ...

  5. List of chess variants - Wikipedia

    en.wikipedia.org/wiki/List_of_chess_variants

    Polgar reform chess [multivariant]: In his book Reform-Chess (1997), László Polgár proposed several variants played on board of size 5×8, 6×8, 8×6, or 9×6. [12] The initial piece setup is determined by players in the same way as in Benko's Pre-chess. There are special rules for castling depending on the board. Polgár recommended these ...

  6. Endgame tablebase - Wikipedia

    en.wikipedia.org/wiki/Endgame_tablebase

    Some correspondence organizations draw a distinction in their rules between utilizing chess engines which calculate a position in real time and the use of a precomputed database stored on a computer. Use of an endgame tablebase might be permitted in a live game even if engine use is forbidden.

  7. Glicko rating system - Wikipedia

    en.wikipedia.org/wiki/Glicko_rating_system

    Mark Glickman created the Glicko rating system in 1995 as an improvement on the Elo rating system. [1]Both the Glicko and Glicko-2 rating systems are under public domain and have been implemented on game servers online like Counter-Strike: Global Offensive, Team Fortress 2, [2] Dota 2, [3] Guild Wars 2, [4] Splatoon 2, [5] Online-go.com, [6] Lichess and chess.com.

  8. Chess annotation symbols - Wikipedia

    en.wikipedia.org/wiki/Chess_annotation_symbols

    The majority of chess writers and editors consider symbols more than two characters long unnecessary. However a few writers have used three or more exclamation points ("!!!") for an exceptionally brilliant move, three or more questions marks ("???") for an exceptionally bad blunder, or unusual combinations of exclamation points and question ...

  9. Wikipedia:WikiProject Chess - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:WikiProject_Chess

    Use ½ to denote the scoring for a drawn game, rather than .5, 0.5, 1/2, 1 ⁄ 2, or ⁠ 1 / 2 ⁠. The first of these is generally used in print books and magazines. MOS:FRAC generally discourages the use of "precomposed fractions" such as this one, but makes an exception for articles in which ½ is the only fraction used, such as most chess ...