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They mention timing (chess clocks), arbiters (or, in USCF play, directors), keeping score, and adjournment. The FIDE Laws of Chess define the rules for standard chess, rapid chess, blitz chess, and guidelines for Chess960. For standard chess, the players must record the moves, which is optional in rapid chess and blitz Chess. [39]
The example below is for the opening position, so no moves are shown in the heading. The first row provides the move numbers with subsequent rows representing different variations. Since the initial position is not always the opening position, these numbers will not always start at "1." White half-moves are shown above black half-moves.
Due to moving first, White starts the game with the initiative, [2] but it can be lost in the opening by accepting a gambit.Players can also lose initiative by making unnecessary moves that allow the opponent to gain tempo, such as superfluous "preventive" (prophylactic) moves intended to guard against certain actions by the opponent, that nonetheless require no specific response by them.
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The pawn is the least valuable chess piece, so pawns are often used to capture defended pieces. A single pawn typically forces a more powerful piece, such as a rook or a knight, to retreat. The ability to fork two enemy pieces by advancing a pawn is often a threat. Alternately, a pawn move can itself reveal a discovered attack.
Chess strategy is the aspect of chess play concerned with evaluation of chess positions and setting goals and long-term plans for future play. While evaluating a position strategically, a player must take into account such factors as the relative value of the pieces on the board, pawn structure, king safety, position of pieces, and control of key squares and groups of squares (e.g. diagonals ...
A move that is not permitted by the rules of chess. An illegal move discovered during the course of a game must be corrected. [211] illegal position A position in a game that is a consequence of an illegal move or an incorrect starting position; a position that is impossible to reach by any sequence of legal moves. [211] IM
The modern rules of chess (and breaking them) are discussed in separate articles, and briefly in the following subsections: Rules of chess – rules governing the play of the game of chess. White and Black in chess – one set of pieces is designated "white" and the other is designated "black". White moves first.