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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 Bachelor of Science programs are offered for: Computer Science; Information Science; Computational Biology; Digital Narrative and Interactive Design; Data Science; Computational Social Science; Physics and Quantum Computing; A combined bachelor and master of science program is also offered for students to complete both degrees in five years ...
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 ...
Turochamp simulates a game of chess against the player by accepting the player's moves as input and outputting its move in response. The program's algorithm uses a heuristic to determine the best move to make, calculating all potential moves that it can make, then all of the potential player responses that could be made in turn, as well as further "considerable" moves, such as captures of ...
A player who touches one of the player's own pieces and an opponent's piece must make that capture if it is a legal move. Otherwise, the first of the touched pieces must be moved or captured. If it cannot be determined whether the player's piece or the opponent's piece was touched first, it is assumed that the player's piece was touched first.
Jonathan Herbert Schaeffer FRSC [1] (born 1957) is a Canadian researcher and professor at the University of Alberta and the former Canada Research Chair in Artificial Intelligence. He led the team that wrote Chinook, the world's strongest American checkers player, after some relatively good results in writing computer chess programs.