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A skewer is the opposite of a pin; the difference is that in a skewer, the more valuable piece is the one under direct attack and the less valuable piece is behind it. [ 1 ] [ 2 ] The opponent is compelled to move the more valuable piece to avoid its capture, thereby exposing the less valuable piece which can then be captured (see chess piece ...
For standard chess, the players must record the moves, which is optional in rapid chess and blitz Chess. [39] Some rules are specifically adapted for blind and visually impaired players. [40] These rules are used for over-the-board (OTB) games. The rules for correspondence chess are defined by the ICCF. [41]
These templates shows a chess diagram, a graphic representation of a position in a chess game, using standardised symbols resembling the pieces of the standard Staunton chess set.
A chess rating system is a system used in chess to estimate the strength of a player, based on their performance versus other players. They are used by organizations such as FIDE, the US Chess Federation (USCF or US Chess), International Correspondence Chess Federation, and the English Chess Federation. Most of the systems are used to ...
Chess notation systems are used to record either the moves made or the position of the pieces in a game of chess. Chess notation is used in chess literature, and by players keeping a record of an ongoing game. The earliest systems of notation used lengthy narratives to describe each move; these gradually evolved into more compact notation systems.
Cylinder chess – played on a cylinder, which results in joining the right and left sides of the board. Circular chess – variant played on a circular board. Alice Chess – played with two boards, one of which starts empty. After the completion of each move, the piece that moved is transferred to the same square of the other board (after a ...
Chess diagrams are widely used in chess publications as an aid to visualisation, or to aid the readers to verify that they are looking at the correct position on their chessboard or computer. The symbols used generally resemble the pieces of the standard Staunton chess set, although a number of different fonts have been used over the centuries.
In chess, an X-ray or X-ray attack is a tactic where a piece indirectly controls a square from the other side of an intervening piece. Generally, a piece performing an X-ray either: effects a skewer, [1] [2] [3] indirectly attacks an enemy piece through another piece or pieces, or; defends a friendly piece through an enemy piece.