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An exclamation point "!" indicates a good move, [2] especially one that is surprising or requires particular skill. The symbol may also be interpreted as "best move". Annotators are usually somewhat conservative with the use of this symbol; it is not usually awarded to obvious moves that capture material or deliver checkmate.
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.
This is a list of chess openings, organised by the Encyclopaedia of Chess Openings (ECO) code classification system.The chess openings are categorised into five broad areas ("A" through "E"), with each of those broken up into one hundred subcategories ("00" through "99").
Arpad Elo was a chess master and an active participant in the United States Chess Federation (USCF) from its founding in 1939. [4] The USCF used a numerical ratings system devised by Kenneth Harkness to enable members to track their individual progress in terms other than tournament wins and losses.
A premove is an instruction given by a player to a chess program to make a certain move on a following turn if possible. Premoving is a feature exclusive to online chess. It is offered by many chess websites, including the Internet Chess Club, the Free Internet Chess Server, Chess.com, and Lichess. Chess.com allows players to make multiple ...
Chess software comes in different forms. A chess playing program provides a graphical chessboard on which one can play a chess game against a computer. Such programs are available for personal computers, video game consoles, smartphones/tablet computers or mainframes/supercomputers.
If the move is a checking move, + is also appended; if the move is a checkmating move, # is appended instead. For example: e8=Q# . An annotator who wishes to suggest alternative moves to those actually played in the game may insert variations enclosed in parentheses.
Algebraic notation. Algebraic notation is the standard method of chess notation, used for recording and describing moves.It is based on a system of coordinates to uniquely identify each square on the board. [1]