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The rule is also known as repetition of position and, in the USCF rules, as triple occurrence of position. [1] Two positions are by definition "the same" if the same types of pieces occupy the same squares, the same player has the move, the remaining castling rights are the same and the possibility to capture en passant is the same.
In the game of chess, perpetual check is a situation in which one player can play an unending series of checks, from which the defending player cannot escape.This typically arises when the player who is checking feels their position in the game is inferior, they cannot deliver checkmate, and wish to force a draw.
A variant first described by Claude Shannon provides an argument about the game-theoretic value of chess: he proposes allowing the move of “pass”. In this variant, it is provable with a strategy stealing argument that the first player has at least a draw thus: if the first player has a winning move in the initial position, let him play it, else pass.
The Berlin Defence is a chess opening that begins with the moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6. The opening is a variation of the Ruy Lopez and is assigned codes C65–C67 in the Encyclopaedia of Chess Openings. [1] The code C65 covers White moves other than 4.0-0, such as 4.d3 (4.Nc3 is considered a variation of the Four Knights Game). The ...
In chess, a windmill (or seesaw) [1] [2] is a tactic in which a piece repeatedly gains material while simultaneously creating an inescapable series of alternating direct and discovered checks. Because the opponent must attend to check every move, they are unable to prevent their pieces from being captured; thus, windmills can be extremely powerful.
No Stress Chess: Marketed for teaching beginners, the piece(s) a player is able to move are determined by drawing from a deck of cards, with each card providing the rules for how the piece may move. Castling and en passant are disallowed. [105] Panic Chess: Player selects a piece to move, but the target square is randomized from all possible ...
Lasker's Manual of Chess (German: Lehrbuch des Schachspiels) is a book on the game of chess written in 1925 by former World Chess Champion Emanuel Lasker. The content of the book, as Lasker himself writes, is most influenced by the theories put forth by Steinitz , as well as Staunton 's The Chess-Player's Handbook .
In chess, a fork is a tactic in which a piece attacks multiple enemy pieces simultaneously. The attacker usually aims to capture one of the forked pieces. The defender often cannot counter every threat. A fork is most effective when it is forcing, such as when the king is put in check.
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