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Capablanca had repeated the moves to gain time on the clock (i.e. get in some quick moves before time control). The game continued without a draw being claimed; Lasker blundered and resigned on move 46. [17] (Capablanca went on to win the match and become world champion.)
Fool's mate was named and described in The Royal Game of Chess-Play, a 1656 text by Francis Beale that adapted the work of the early chess writer Gioachino Greco. [2]Prior to the mid-19th century, there was not a prevailing convention as to whether White or Black moved first; according to Beale, the matter was to be decided in some prior contest or decision of the players' choice. [3]
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.
Claude Shannon. The Shannon number, named after the American mathematician Claude Shannon, is a conservative lower bound of the game-tree complexity of chess of 10 120, based on an average of about 10 3 possibilities for a pair of moves consisting of a move for White followed by a move for Black, and a typical game lasting about 40 such pairs of moves.
Handicaps (or "odds") in chess are handicapping variants which enable a weaker player to have a chance of winning against a stronger one. There are a variety of such handicaps, such as material odds (the stronger player surrenders a certain piece or pieces), extra moves (the weaker player has an agreed number of moves at the beginning of the game), extra time on the chess clock, and special ...
Zugzwang (from German 'compulsion to move'; pronounced [ˈtsuːktsvaŋ]) is a situation found in chess and other turn-based games wherein one player is put at a disadvantage because of their obligation to make a move; a player is said to be "in zugzwang" when any legal move will worsen their position.
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The file of the pawn matters too: a bishop pawn gives the best winning chances, followed by a central pawn, followed by a knight pawn, with a rook pawn having little chance of winning. [55] If White is to move in the diagram, Black draws by using the frontal defense: 1. Kh4 Rh8+! 2. Kg5 Rg8+ 3. Kh5 Rh8+ 4. Kg6 Rg8+ 5. Kh5 Rh8+ and White cannot ...