Chess notation
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Chess notation is the term for several systems that have developed to record either the moves made in a game of chess or the position of pieces on a chessboard. The earliest systems of notation used lengthy narratives to describe each move; these gradually evolved into terser notation systems. Currently algebraic chess notation is the accepted standard and is widely used. Algebraic notation has several variations. Descriptive chess notation was used in English- and Spanish-language literature until the late 20th century, but is now obsolete. There are some special systems for international correspondence chess. Portable Game Notation is used when working with computer chess programs. Systems also exist for transmission using Morse code over telegraph or radio.
Some move-recording notations are designed mainly for use by human players; others are designed for use by computers.
In recognized competitions, all players are required to record all the moves of both players in order to resolve disputes about whether a player has made an illegal move and what the position should now be. In addition, if there is a time limit rule that requires each player to complete a specified number of moves in a specified time, as there is in most serious competition, an accurate count of the moves must be kept. All chess coaches strongly recommend the recording of one's games so that one can look for improvements in one's play. The algebraic and descriptive notations are also used in books about chess.
Here is an example of the same moves in some of the notations which may be used by humans:
In all forms of notation, the result is usually indicated at the conclusion of the game by either "1–0", indicating that white won, "0–1" indicating that black won or " 1⁄2– 1⁄2", indicating a draw.
Annotators commenting on a game frequently use question marks ("?") and exclamation marks ("!") to label a move as bad or praise the move as a good one (see Chess annotation symbols).
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