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In chess, a pin is a tactic in which a defending piece cannot move out of an attacking piece's line of attack without exposing a more valuable defending piece. Moving the attacking piece to effect the pin is called pinning ; the defending piece restricted by the pin is described as pinned .
This glossary of chess explains commonly used terms in chess, in alphabetical order.Some of these terms have their own pages, like fork and pin.For a list of unorthodox chess pieces, see Fairy chess piece; for a list of terms specific to chess problems, see Glossary of chess problems; for a list of named opening lines, see List of chess openings; for a list of chess-related games, see List of ...
Relative pin – where the piece shielded by the pinned piece is a piece other than the king, but typically more valuable than the pinned piece. Partial pin – when a rook or queen is pinned along a file or rank, or a bishop or queen is pinned along a diagonal; Situational pin – when a pinned piece is shielding a square and moving out of the ...
The computer may make a poor move because it is unable to see the consequences even one ply beyond its maximum search depth. The horizon effect was a major problem in the early years of computer chess, but it is less of an issue today as modern chess engines can search many moves deep even in complex positions. See horizon effect. iterative ...
The average person with a bachelor's degree earns more money than the average person with an associate's degree, who earns more than the average person with a high school diploma — but averages...
In chess composition, the aesthetic concept which allows for this expanded definition of pure mate is called economy of force. [3] [20] Economy of force refers to the idea that a chess composition is simpler and more beautiful when it uses minimal material to maximal effect, e.g. in a checkmate or some particular tactic. Ideally, in order to ...
In chess composition, a motif is basic element of a move in the consideration why the piece moves and how it supports the fulfillment of a stipulation. Any move may and often does contain multiple motifs. Some composition schools put specific emphasis on motivation in chess problems, especially strategical school and Slovak school.
There are other symbols used by various chess engines and publications, such as Chess Informant and Encyclopaedia of Chess Openings, when annotating moves or describing positions. [8] Many of the symbols now have Unicode encodings, but quite a few still require a special chess font with appropriated characters.