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Chess Endgame
The endgame (or ending) is the final stage of a chess game which occurs after the middlegame. It begins when few pieces are left on the board. The line between the middlegame and the endgame is often not clear, and may occur gradually or with a quick exchange of pieces. The endgame, however, tends to have different characteristics from the middlegame, and the players have correspondingly different strategic concerns. In particular, pawns become more important as endgames often revolve around attempts to promote a pawn by advancing it to the eighth . The king, which normally is kept safe during the game, becomes active in the endgame, as it can help escort pawns to promotion, attack enemy pawns, protect other pieces, and restrict the movement of the enemy king. Not all chess games reach an endgame; some of them end earlier. All chess positions with up to seven pieces on the board have been solved by endgame tablebases, so the outcome (win, loss, or draw) of best play by bot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Chess
Chess is a board game for two players. It is an abstract strategy game that involves Perfect information, no hidden information and no elements of game of chance, chance. It is played on a square chessboard, board consisting of 64 squares arranged in an 8×8 grid. The players, referred to as White and Black in chess, "White" and "Black", each control sixteen Chess piece, pieces: one king (chess), king, one queen (chess), queen, two rook (chess), rooks, two bishop (chess), bishops, two knight (chess), knights, and eight pawn (chess), pawns, with each type of piece having a different pattern of movement. An enemy piece may be captured (removed from the board) by moving one's own piece onto the square it occupies. The object of the game is to "checkmate" (threaten with inescapable capture) the enemy king. There are also several ways a game can end in a draw (chess), draw. The recorded history of chess goes back to at least the emergence of chaturanga—also thought to be an ancesto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Chess Piece Relative Value
In chess, a relative value (or point value) is a standard value conventionally assigned to each piece. Piece valuations have no role in the rules of chess but are useful as an aid to evaluating an exchange of pieces. The best-known system assigns 1 point to a pawn, 3 points to a knight or bishop, 5 points to a rook and 9 points to a queen. Valuation systems, however, provide only a rough guide; the true value of a piece can vary significantly, depending on a piece's board position relative to a player's other pieces and the opponent's pieces. Standard valuations Piece values exist because calculating to checkmate in most positions is beyond reach even for top computers. Thus, players aim primarily to create a material advantage; to pursue this goal, it is normally helpful to quantitatively approximate the strength of an army of pieces. Such piece values are valid for, and conceptually averaged over, tactically "quiet" positions where immediate tactical g ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Checkmate
Checkmate (often shortened to mate) is any game position in chess and other chess-like games in which a player's king is in check (threatened with ) and there is no possible escape. Checkmating the opponent wins the game. In chess, the king is never actually captured. The player loses as soon as their king is checkmated. In formal games, it is usually considered good etiquette to resign an inevitably lost game before being checkmated. If a player is not in check but has no legal moves, then it is '' stalemate'', and the game immediately ends in a draw. A checkmating move is recorded in algebraic notation using the hash symbol "#", for example: 34.Qg3#. Examples A checkmate may occur in as few as two moves on one side with all of the pieces still on the board (as in fool's mate, in the opening phase of the game), in a middlegame position (as in the 1956 game called the Game of the Century between Donald Byrne and Bobby Fischer), or after many moves with as few as t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Connected Pawns
In chess, connected pawns are two or more pawns of the same color on adjacent , as distinct from isolated pawns. These pawns are instrumental in creating pawn structure because, when diagonally adjacent, like the two rightmost white pawns, they form a , where the pawn behind protects the one in front. When attacking these chains, the weak spot is the backmost pawn because it is not protected by any other pawn. Discussion Connected pawns that are both passed, i.e., without any enemy pawns in front of them on the same file or adjacent files, are referred to as connected passed pawns. Such pawns can be very strong in the endgame, especially if supported by other pieces. Often the opponent must sacrifice to prevent one of the pawns from promoting. Connected passed pawns are usually superior to other passed pawns. An exception is in an opposite-colored bishops endgame with a bishop and two pawns versus a bishop on the opposite color. If the pawns are connected and not beyond ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Initiative (chess)
Initiative in a chess position belongs to the player who can make threats that cannot be ignored, thus putting the opponent in the position of having to spend turns responding to threats rather than creating new threats. A player with the initiative will often seek to maneuver their pieces into more and more advantageous positions as they launch successive attacks. The player who lacks the initiative may seek to regain it through . Discussion Due to moving first, White starts the game with the initiative, but it can be lost in the opening by accepting a gambit. Players can also lose initiative by making unnecessary moves that allow the opponent to gain tempo In musical terminology, tempo (Italian for 'time'; plural 'tempos', or from the Italian plural), measured in beats per minute, is the speed or pace of a given musical composition, composition, and is often also an indication of the composition ..., such as superfluous "preventive" ( prophylactic) moves intended to guar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Max Euwe
Machgielis "Max" Euwe (; May 20, 1901 – November 26, 1981) was a Dutch chess player, mathematician, author, and chess administrator. He was the fifth player to become World Chess Championship, World Chess Champion, a title he held from 1935 until 1937. He served as President of FIDE, the World Chess Federation, from 1970 to 1978. Early years, education, and professional career Euwe was born in the Watergraafsmeer, in Amsterdam. He studied mathematics at the University of Amsterdam under the founder of intuitionistic logic, L.E.J. Brouwer (who later became his friend and for whom he held a funeral oration), and earned his doctorate in 1926 under Roland Weitzenböck. He taught mathematics, first in Rotterdam, and later at a girls' Lyceum in Amsterdam. After World War II, Euwe became interested in computer programming and was appointed professor in this subject at the universities of Erasmus University Rotterdam, Rotterdam and University of Tilburg, Tilburg, retiring from Tilbu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Bishop (chess)
The bishop (♗, ♝) is a Chess piece, piece in the game of chess. It moves and captures along without jumping over interfering pieces. Each player begins the game with two bishops. The starting squares are c1 and f1 for White's bishops, and c8 and f8 for Black's bishops. Placement and movement The is placed on f1 for White and f8 for Black; the is placed on c1 for White and c8 for Black. The bishop has no restrictions in distance for each move but is limited to diagonal movement. It cannot jump over other pieces. A bishop captures by occupying the square on which an enemy piece stands. As a consequence of its diagonal movement, each bishop always remains on one square color. Due to this, it is common to refer to a bishop as a ''light-squared'' or ''dark-squared'' bishop. Comparison – other pieces Versus rook A rook (chess), rook is generally worth about two Pawn (chess), pawns more than a bishop. The bishop has access to only half of the squares on the board, w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Rook (chess)
The rook (; ♖, ♜) is a piece in the game of chess. It may move any number of squares horizontally or vertically without jumping, and it may an enemy piece on its path; it may participate in castling. Each player starts the game with two rooks, one in each corner on their side of the board. Formerly, the rook (from ) was alternatively called the ''tower'', ''marquess'', ''rector'', and ''comes'' (''count'' or ''earl''). The term "castle" is considered to be informal or old-fashioned. Placement and movement The white rooks start on the squares a1 and h1, while the black rooks start on a8 and h8. The rook moves horizontally or vertically, through any number of unoccupied squares. The rook cannot jump over pieces. The rook may capture an enemy piece by moving to the square on which the enemy piece stands, removing it from play. The rook also participates with the king in a special move called castling, wherein it is transferred to the square crossed by the king after th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Edmar Mednis
Edmar John Mednis (; March 22, 1937 – February 13, 2002) was an American chess player and writer of Latvian origin. He was awarded the title of Grandmaster by FIDE in 1980. Biography Mednis' family were refugees in 1944 during World War II. As displaced persons, Edmar and his two sisters, with parents Edvin and Marita Mednis, were permitted to emigrate to the United States in 1950. Mednis was trained as a chemical engineer, then worked as a stockbroker, but became best known as a chess author. He wrote 26 chess books, including ''Practical Rook Endings'' (1982) and ''Strategic Chess: Mastering the Closed Game'' (1993), and hundreds of chess articles. He and Robert Byrne annotated many games for ''Chess Informant''. Mednis finished second in the 1955 World Junior Championship behind Boris Spassky (the two drew their game). He was the first player to beat Bobby Fischer in a U.S. Championship. He played on the 1962 US team at the 15th Chess Olympiad and finished equal ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Zugzwang
Zugzwang (; ) 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. Although the term is used less precisely in games such as chess, it is used specifically in combinatorial game theory to denote a move that directly changes the outcome of the game from a win to a loss. Putting the opponent in zugzwang is a common way to help the superior side win a game, and in some cases it is necessary in order to make the win possible. More generally, the term can also be used to describe a situation where none of the available options lead to a good outcome. The term ''zugzwang'' was used in German chess literature in 1858 or earlier, and the first known use of the term in English was by World Champion Emanuel Lasker in 1905. The concept of zugzwang was known to chess players many centuries before the term was coine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Passed Pawn
In chess, a passed pawn is a pawn with no opposing pawns to prevent it from advancing to the eighth ; i.e. there are no opposing pawns in front of it on either the same or adjacent files. A passed pawn is sometimes colloquially called a passer. Passed pawns are advantageous because only the opponent's pieces can stop them from promoting. In the diagram, the white pawns on b5, c4, and e5 are passed pawns, and Black's pawn on d4 is a passed pawn. If Black plays ...fxg4, then the black pawn on g4 will be passed, as well as White's pawn on f4. Protected passed pawn A passed pawn that is protected by its own pawns is called a protected passed pawn. In the first diagram in this article, the pawns on the b- and e-files are protected passed pawns. Two or more passed pawns on adjacent files are called connected passed pawns (see connected pawns), and they are very strong. In the diagram at the top, White's b- and c-pawns are connected passed pawns. A pair of connected passed p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Chess Problem
A chess problem, also called a chess composition, is a puzzle created by the composer using chess pieces on a chessboard, which presents the solver with a particular task. For instance, a position may be given with the instruction that White is to move first, and checkmate Black in two moves against any possible defence. A chess problem fundamentally differs from play in that the latter involves a struggle between Black and White, whereas the former involves a competition between the composer and the solver. Most positions which occur in a chess problem are unrealistic in the sense that they are very unlikely to occur in over-the-board play. There is a substantial amount of specialized jargon used in connection with chess problems. Definition The term chess problem is not sharply defined: there is no clear demarcation between chess compositions on the one hand and puzzle or tactical exercises on the other. In practice, however, the distinction is very clear. There are common c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |