A chess expert was said to have learned about 50, 000 chunks or chess position patterns.

For example, if represents the position of a chess piece — the row and the column, then the joint entropy of the row of the piece and the column of the piece will be the entropy of the position of the piece.

The game of ajedrex, or chess, is not the only game explicated in the Libro de Juegos, but it does occupy the primary position in the text and is given the most attention to detail.

* Transposition ( chess ), different moves or a different move order leading to the same position, especially during the openings

Since pawns are the most immobile and least valuable of the chess pieces, the pawn structure is relatively static and largely determines the strategic nature of the position.

Sometimes in a chess game position, a piece may be considered to be in a situational pin.

Consider the chess position shown at right.

The downside of these variants is that the initial position has usually less harmony and balance than standard chess position.

Other examples of EXPTIME-complete problems include the problem of evaluating a position in generalized chess, checkers, or Go ( with Japanese ko rules ).

The game employs the same board and pieces as standard chess, but the starting position of the pieces along the players ' home ranks is randomized.

Note that one of these initial positions ( rolled by 2-3-3-2-3 or 2-3-3-4-2 ) is the standard chess position, at which point a standard chess game ensues.

If the initial position happens to be the standard chess initial position, the Chess960 castling rules have exactly the same result as the standard chess castling rules.

It has been argued that two games should be played from each starting position, with players alternating as White and Black, since some initial positions may offer White a bigger advantage than in standard chess.

Since the initial position is usually not the orthodox chess initial position, recorded

Note that not all chess programs can handle castling correctly in Chess960 games ( except if the initial position is the standard chess initial position ).

Afterwards, the earth rises again from the sea, is fairer than before, and where Asgard used to be a remnant of the Æsir gather, some coming up from Hel, and talk and play chess all day with the golden chessmen of the ancient Æsir, which they find in the grass ( Section 58 ).

Cryptanalysts were selected for various intellectual achievements, whether they were linguists, chess champions, crossword experts, polyglots or great mathematicians.

In Nazi Germany, even hobbies were regimented ; all private clubs ( whether they be for chess, football, or woodworking ) were brought under the control of KdF and, in turn, the Nazi Party.

Likewise, they generally require more thought and planning than party games, such as Pictionary or Trivial Pursuit, but less than classic strategy games, such as chess and Go.

In 1984 in Budapest, Sophia and Judit, at the time nine and seven years of age respectively, played two games of blindfold chess against two masters which they won.

In the end, the Museum allowed the chess set to be displayed at the Isle of Lewis festival tournament, but they were not used in any games.

For the sake of this analogy, the chess pieces are objects, they and their positions constitute states of affairs and therefore facts, and the totality of facts is the entire particular game of chess.

She also observes that the chess pieces have come to life, though they remain small enough for her to pick up.

Highly stylized conflict games such as chess are not generally considered wargames, although they are recognized as being related.

) and John Nunn ( in chess endgames ) are notable examples of researchers doing this work, though they were not – and are not – involved in tablebase generation.

The story goes that the first time Mendelssohn met Lessing, they played chess ; therefore, in Lessing's play Nathan the Wise Nathan and Saladin first meet during a game of chess.

But before they can get in, the troubled chess grandmaster throws himself out of his bedroom window and dies.

Some other generalized games, such as chess, checkers ( draughts ), and Go are EXPTIME-complete because a game between two perfect players can be very long, so they are unlikely to be in PSPACE.

After castling, the king and rook's final positions are exactly the same as they would be in standard chess.

Implementers also need to decide if they will use endgame databases or other optimizations, and often implement common de facto chess standards.

It turned out to produce excellent results, at least in the field of chess, to let computers do what they do best ( calculate ) rather than coax them into imitating human thought processes and knowledge.

In chess, for instance, if one player is rated 100 points higher than the other player, they are expected to win about five games out of eight, and the rating changes reflect that.

His attempts to open a law office failed ; when he had visitors, they invariably wanted to talk about chess, not their legal affairs.

Translation: My main purpose is to make myself commendable by a novelty of which no one was aware or perhaps was capable discovering ; this is to play the pawns well ; they are the soul of chess: it is they which uniquely determine the attack and the defence, and on their good or bad arrangement depends entirely the winning or losing of the game.

Rooks, bishops, and knights move as they do in chess in any given plane.

Zonaras, commenting on Canon 50, wrote, " Because there are some of the Bishops and clergy who depart from virture and play chess ( zatikron ) or dice or drink to excess, the Rule commands that such shall cease to do so or be excluded ; and if a Bishop or elder or deacon or subdeacon or reader or singer do not cease so to do, he shall be cast out: and if laymen be given to chess-playing and drunkenness, they shall be excluded.

Karpov was born on May 23, 1951 at Zlatoust in the Urals region of the former Soviet Union, and learned to play chess at the age of four.

* 1975 – Bobby Fischer refuses to play in a chess match against Anatoly Karpov, giving Karpov the title of World Champion by default.

While the greatest players of the time, among them Alekhine, Emanuel Lasker and Capablanca, clearly did not allow their play to be hobbled by blind adherence to general concepts that the center had to be controlled by pawns, that development had to happen in support of this control, that rooks always belong on open files, that wing openings were unsound — core ideas of Tarrasch's chess philosophy as popularly understood — beginners were taught to think of these generalizations as unalterable principles.

Nimzowitsch supplemented many of the earlier simplistic assumptions about chess strategy by enunciating in his turn a further number of general concepts of defensive play aimed at achieving one's own goals by preventing realization of the opponent's plans.

Since the second half of the 20th century, computers have been programmed to play chess with increasing success, to the point where home computers can play chess at a very high level.

A certain amount of socializing might typically be expected during game play, as opposed to the relative silence sometimes expected during some strategy games like chess and go or restrictions on allowable conversations or actions found in some highly competitive games such as contract bridge.

She learned to play chess at age five, emigrating with her parents to Brooklyn that same year ( 1989 ).

In 1995, Nigel Short and Polgár were to play a game using the famous chess set, but British Museum refused.

The game was historic as not only the first time in chess history a female player beat the world's No. 1 player in competitive play, it was the first time in any sport that the No. 1 ranked male player has lost to the No. 1 ranked female player.

In 2010, Judit began her return to competitive chess and would play more than she had in recent years.

The former World Champion Garry Kasparov wrote that, based upon her games, " if to ' play like a girl ' meant anything in chess, it would mean relentless aggression.

Jennifer Shahade, writer and two-time U. S. women's chess champion, suggested that the influence of Polgár as a role model may be one of the reasons women play more aggressive chess than men.

She has stated preferring to learn an opponent's style so she can play intentionally against him rather than playing " objective " chess.

* 1956 – Donald Byrne Vs. Bobby Fischer play a famous chess game called The Game of the Century.

In a famous letter to Leopold von Gerlach, Bismarck wrote that it was foolish to play chess having first put 16 of the 64 squares out of bounds.

** Chess Module – Increased the G7400's computing power such that it could play chess, also compatible with G7000

For instance, a chess program designed to play in a tournament with a clock will need to decide on a move before a certain deadline or lose the game, and is therefore a real-time computation, but a chess program that is allowed to run indefinitely before moving is not.

By seven, he had also learned to play chess.

* In Tic-Tac-Chess, players play a game of chess and tic-tac-toe simultaneously.