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Fortress (chess)
In chess, a fortress is an Chess endgame, endgame draw (chess), drawing technique in which the side behind in sets up a zone of protection that the opponent cannot penetrate. This might involve keeping the enemy king out of one's position, or a safe zone the enemy cannot force one out of (e.g. see the #Opposite-colored bishops, opposite-colored bishops example). An elementary fortress is a theoretically drawn position (i.e. a ) with reduced material in which a passive defense will maintain the draw. Fortresses commonly have the following characteristics: # Useful pawn (chess), pawn are not possible. # If the stronger side has pawns, they are firmly blocked. # The stronger side's king (chess), king cannot penetrate because it is either cut off or near the edge of the chessboard, board. # Zugzwang positions cannot be forced because the defender has available. Fortresses pose a problem for computer chess: computers fail to recognize fortress-type positions (unless using a suitabl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
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] [Amazon] |
Hikaru Nakamura
Christopher Hikaru NakamuraMemorandum in Support of Defendant Christopher Hikaru Nakamura's Motion to Dismiss , United States District Court for the Eastern District of Missouri, December 7, 2022 (born December 9, 1987) is an American Grandmaster (chess), chess grandmaster, Online streamer, streamer, YouTuber, five-time U.S. Chess Champion, and the reigning FIDE World Fischer Random Chess Championship 2022, World Fischer Random Chess Champion. A chess prodigy, he earned his grandmaster title at the age of 15, the youngest American at the time to do so. With a peak Elo rating system, rating of 2816, Nakamura is the Comparison of top chess players throughout history#Elo system, tenth-highest-rated player in history. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Draw By Agreement
A game of chess can end in a draw by agreement. A player may offer a draw at any stage of a game; if the opponent accepts, the game is a draw. In some competitions, draws by agreement are restricted; for example draw offers may be subject to the discretion of the arbiter, or may be forbidden before move 30 or 40, or even forbidden altogether. The majority of draws in chess are by agreement. Under FIDE rules, a draw should be offered after making the move and before pressing the clock, then marked in the scoresheet as ''(=)''. However, draw offers made at any time are valid. If a player offers a draw before making a move, the opponent has the option of requesting a move before deciding whether or not to accept the offer. Once made, a draw offer cannot be retracted and is valid until rejected. A player may offer a draw by asking, "Would you like a draw?", or similar; the French word ''remis'' (literally "reset") is internationally understood as a draw offer and may be used if the p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Sacrifice (chess)
In chess, a sacrifice is a move that gives up a piece with the objective of gaining tactical or positional compensation in other forms. A sacrifice could also be a deliberate exchange of a chess piece of higher value for an opponent's piece of lower value. Any chess piece except the king may be sacrificed. Because players usually try to hold on to their own pieces, offering a sacrifice can come as an unpleasant surprise to one's opponent, putting them off balance and causing them to waste precious time trying to calculate whether the sacrifice is sound or not, and whether to accept it. Sacrificing one's queen (the most valuable piece), or a string of pieces, adds to the surprise, and such games can be awarded . Types of sacrifice Real versus sham Rudolf Spielmann proposed a division between sham and real sacrifices: * In a ''real sacrifice'', the sacrificing player will often have to play on with less than their opponent for quite some time. * In a ''sham sacrifice'', ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Fork (chess)
In chess, a fork is a tactic in which a piece 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 , such as when the king is put in check. A fork is a type of . Terminology A fork is an example of a . The type of fork is named after the type of forking piece. For example, a fork by a knight is a ''knight fork''. The attacked pieces are ''forked''. If the king King is a royal title given to a male monarch. A king is an Absolute monarchy, absolute monarch if he holds unrestricted Government, governmental power or exercises full sovereignty over a nation. Conversely, he is a Constitutional monarchy, ... is one of the attacked pieces, the term ''absolute fork'' is sometimes used, while a fork not involving the enemy king is a ''relative fork''. A fork of the king and queen, the highest -gaining fork possible, is sometimes called a ''royal fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Wijk Aan Zee
Wijk aan Zee (; ) is a village on the coast of the North Sea in the municipality of Beverwijk, the province of North Holland of the Netherlands. The prestigious Tata Steel Chess Tournament (formerly called the Corus chess tournament or the Hoogovens tournament) takes place there every year. Due to its seaside location, Wijk aan Zee has become a popular destination among tourists. This is reflected in the village economy, which consists of many bars and hotels. Cultural Village of Europe 1999 In 1999, Wijk aan Zee named itself "Cultural Village of Europe", recognizing the special nature of village life in general. This was three years after the Danish village of Tommerup had claimed such a title, but this time a large project was to ensue. Wijk aan Zee came together with villages from England, Estonia, France, Greece, Italy, Spain, Germany, Denmark, The Czech Republic and Hungary in an effort to determine the role and future of villages in Europe, but also to help each other find ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Viktor Korchnoi
Viktor Lvovich Korchnoi (, ; 23 March 1931 – 6 June 2016) was a Soviet (before 1976) and Swiss (after 1980) chess grandmaster (GM) and chess writer. He is considered one of the strongest players never to have become World Chess Champion. Born in Leningrad, Korchnoi defected to the Netherlands in 1976, and resided in Switzerland from 1978, becoming a Swiss citizen. Korchnoi played four matches against GM Anatoly Karpov, three of which were official. In 1974, Korchnoi lost to Karpov in the Candidates Tournament 1974, Candidates Tournament final. After GM Bobby Fischer declined to defend his title against Karpov, Karpov was declared World Chess Championship 1975, World Champion in 1975. In World Chess Championship 1978, 1978 and World Chess Championship 1981, 1981, Korchnoi won consecutive Candidates cycles and qualified to challenge Karpov for the World Chess Championship, but lost both matches. The two players also played a drawn training match of six games in 1971. Korchnoi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Valery Salov
Valery Salov (born 26 May 1964) is a Russian chess grandmaster who was ranked third in the world in 1995. Competitive chess career Salov was awarded the International Master title in 1984 and the Grandmaster title in 1986. He was the World under-17 Champion in 1980 and the European Junior Champion in 1983–84. He shared first place with Alexander Beliavsky in the 1987 USSR Championship, but he lost the tiebreaker match with Beliavsky (+0−2=2). At the 1988 USSR Championship he finished tied for third with Artur Yusupov, behind Anatoly Karpov and Garry Kasparov. He qualified twice for the Candidates Tournament for the World Chess Championship. In the 1988 Candidates Tournament for the 1990 Classical Chess World Championship he was defeated in the round of 16 (the first match) by Jan Timman (+0−1=5). In the Candidates Tournament for the 1996 FIDE World Chess Championship he won his first two matches against Alexander Khalifman (+4−0=2) and Jan Timman (+2−1=5) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Norman Tweed Whitaker
Norman Tweed Whitaker (April 9, 1890 – May 20, 1975) was an American International Master of chess, a lawyer, a civil servant, and a chess author. He was convicted of several crimes, was disbarred from the practice of law, and served several terms in prison. His most infamous criminal escapade was a confidence trick involving the Lindbergh kidnapping in 1932. Early life, family and education Whitaker was born in Philadelphia, and grew up in an upper middle class, socially prominent family. His father, Dr. Herbert Whitaker, was a respected mathematics teacher with a doctorate from the University of Pennsylvania, while his mother was well known as a champion whist player. Norman attended high school there, graduating in 1908, and was involved in many extra-curricular school activities.Denker and Parr, p. 262 Whitaker graduated from the University of Pennsylvania with a Bachelor's degree in German Literature. He graduated from Georgetown University with a law degree. Chess invol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Queen (chess)
The queen (♕, ♛) is the most powerful piece in the game of chess. It can move any number of squares vertically, horizontally or , combining the powers of the rook and bishop. Each player starts the game with one queen, placed in the middle of the first next to the king. Because the queen is the strongest piece, a pawn is promoted to a queen in the vast majority of cases; if a pawn is promoted to a piece other than a queen, it is an underpromotion. The predecessor to the queen is the '' ferz'', a weak piece only able to move or capture one step diagonally, originating from the Persian game of shatranj. The queen acquired its modern move in Spain in the 15th century. Placement and movement The white queen starts on d1, while the black queen starts on d8. With the chessboard oriented correctly, the white queen starts on a white square and the black queen starts on a black square—thus the mnemonics "queen gets her color", "queen on er wncolor", or "the dress uee ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Check (chess)
In chess and similar games, check is a condition that occurs when a player's king is under threat of on the opponent's next turn. A king so threatened is said to be ''in check''. A player must get out of check if possible by moving the king to an unattacked square, interposing a piece between the threatening piece and the king, or capturing the threatening piece. If the player cannot remove the check by any of these options, or if using any of these options would result in the player being in check by another piece, the game ends in checkmate and the player loses. Players cannot make any move that puts their own king in check. Overview A check is the result of a move that places the opposing king under an immediate threat of capture by one (or, in rare cases, two) of the player's pieces. Making a move that checks is sometimes called "giving check". Even if a piece is pinned against the player's own king, it may still give check. For example, in the diagrammed position ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
Wrong Bishop
In a chess endgame, a wrong bishop is a bishop that would have been better placed on the opposite square color. This most commonly occurs with a bishop and one of its , but it also occurs with a rook versus a bishop, a rook and one rook pawn versus a bishop, and possibly with a rook and one versus a bishop. Rook versus bishop White wins in this position. The defender has the wrong bishop if it is on the same color as the corner where his king is confined. Black's bishop is on the wrong color of square for it to form a fortress in the corner (i.e. with the black king on the h8-square and the bishop on the g8- or h7-square). White wins: :1. Kf5! Kg8 :2. Ra4!! The only way to win. If 2.Kg6? Kf8 and the black king is able to get out of the "dangerous corner" or "wrong corner" and head to a "safe corner" or "right corner" where he can set up the fortress. :2... Be1 :3. Kg6 Kf8 :4. Rf4+!, followed by 5. Re4, winning. Rook pawn There are some situations involving a rook pawn and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] [Amazon] |
