Glossary of chess
Wikimedia glossary list article
The glossary of chess explains commonly used terms in chess, in alphabetical order. Some of these terms have their own pages, like fork and pin. The glossary uses algebraic notation to describe chess moves.
For a list of:
unorthodox chess pieces, see Fairy chess piece;
terms specific to chess problems, see Glossary of chess problems;
terms specific to computer chess, see Glossary of computer chess terms;
named opening lines, see List of chess openings;
chess-related games, see List of chess variants;
terms related to board games in general, see Glossary of board games.
A
absolute pin
A pin against the king is called absolute since the pinned piece cannot legally move out of the line of attack (as moving it would expose the king to check). Cf. relative pin.
active
Describes a piece that threatens a number of squares, or that has a number of squares available for its next move. It may also describe an aggressive style of play. Antonym: passive.
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