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Doubled Pawns
In chess, doubled pawns are two pawns of the same color residing on the same file. Pawns can become doubled only when one pawn captures onto a file on which another friendly pawn resides. In the diagram, the white pawns on the b-file and e-file are doubled. The pawns on the are doubled and isolated. In most cases, doubled pawns are considered a weakness due to their inability to defend each other. This inability, in turn, makes it more difficult to achieve a breakthrough which could create a passed pawn (often a deciding factor in endgames). In the case of isolated doubled pawns, these problems are only further aggravated. Several chess strategies and openings are based on burdening the opponent with doubled pawns, a strategic weakness. There are, however, cases where accepting doubled pawns can be advantageous because doing so may open up a file for a rook, or because the doubled pawns perform a useful function, such as defending important squares. Also, if the opponent is u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chess
Chess is a board game for two players, called White and Black, each controlling an army of chess pieces in their color, with the objective to checkmate the opponent's king. It is sometimes called international chess or Western chess to distinguish it from related games, such as xiangqi (Chinese chess) and shogi (Japanese chess). The recorded history of chess goes back at least to the emergence of a similar game, chaturanga, in seventh-century India. The rules of chess as we know them today emerged in Europe at the end of the 15th century, with standardization and universal acceptance by the end of the 19th century. Today, chess is one of the world's most popular games, played by millions of people worldwide. Chess is an abstract strategy game that involves no hidden information and no use of dice or cards. It is played on a chessboard with 64 squares arranged in an eight-by-eight grid. At the start, each player controls sixteen pieces: one king, one queen, two rooks, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Alekhine
Alexander Aleksandrovich Alekhine, ''Aleksándr Aleksándrovich Alékhin''; (March 24, 1946) was a Russian and French chess player and the fourth World Chess Champion, a title he held for two reigns. By the age of 22, Alekhine was already among the strongest chess players in the world. During the 1920s, he won most of the tournaments in which he played. In 1921, Alekhine left Soviet Russia and emigrated to France, which he represented after 1925. In 1927, he became the fourth World Chess Champion by defeating José Raúl Capablanca. In the early 1930s, Alekhine dominated tournament play and won two top-class tournaments by large margins. He also played first board for France in five Chess Olympiads, winning individual prizes in each (four medals and a brilliancy prize). Alekhine offered Capablanca a rematch on the same demanding terms that Capablanca had set for him, and negotiations dragged on for years without making much progress. Meanwhile, Alekhine defended his title w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gambit Publications
{{Infobox publisher , name = Gambit Publications , image = , caption = , parent = , status = , traded_as = , predecessor = , founded = , founder = John Nunn, Murray Chandler, and Graham Burgess , successor = , country = United Kingdom , headquarters = London , distribution = Central Books (UK){{Cite web, title = Distribution, access-date = 2017-12-25, url = http://www.centralbooks.com/distribution/, archive-url = https://web.archive.org/web/20171226130320/http://www.centralbooks.com/distribution/, archive-date = 2017-12-26, url-status = deadTwo Rivers Distribution (US) , keypeople = , publications = Books , topics = Chess , genre = , imprints = , revenue = , owner = , numemployees = , website = {{URL, http://www.gambitbooks.com Gambit Publications is a major publisher of chess books. The company's headquarters is in London. It has published more than ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 , a chain where the one 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 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Backward Pawn
In chess, a backward pawn is a pawn that is behind all pawns of the same color on the adjacent and cannot be safely advanced. In the diagram, the black pawn on the c6-square is backward. Disadvantages Backward pawns are usually a positional disadvantage because they are unable to be defended by other pawns. Also, the opponent can place a piece, usually a knight, on the in front of the pawn without any risk of a pawn driving it away. The backward pawn also prevents its owner's rooks and queen on the same file from attacking the piece placed on the hole. If the backward pawn is on a half-open file, the disadvantage is even greater, as the pawn can be attacked more easily by an opponent's rook or queen on the c-file. Pieces can become weak when they are devoted to protecting a backward pawn, since their obligation to defend the pawn keeps them from being deployed for other uses. In practice Modern opening theory features several openings in which one of the players deliberat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Isolated Pawn
In chess, an isolated pawn is a pawn that has no friendly pawn on an adjacent . Isolated pawns are usually a weakness because they cannot be protected by other pawns. The square in front of the pawn may become a good outpost or otherwise a good square for the opponent to anchor pieces. Isolated pawns most often become weaker in the endgame, as there are fewer pieces available to protect the pawn. Isolated pawns can, however, provide improved development and associated opportunities for that offset or even outweigh their weaknesses. The files adjacent to the isolated pawn are either open or half-open, providing two lanes of attack for the rooks and the queen. The absence of pawns adjacent to the isolated pawn may also mobilize the player's knights and bishops. An isolated pawn on the d-file is called an isolated queen pawn or simply an isolani. In addition to the open or half-open c- and e-files, the isolated queen pawn can provide a good outpost on the c- and e-file squares d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pawn Structure
In a game of chess, the pawn structure (sometimes known as the pawn skeleton) is the configuration of pawns on the chessboard. Because pawns are the least mobile of the chess pieces, the pawn structure is relatively static and thus plays a large role in determining the strategic character of the position. General observations Weaknesses in the pawn structure, such as isolated, doubled, or backward pawns and , once created, are usually permanent. Care must therefore be taken to avoid them (but there are exceptions—for instance see ''Boleslavsky hole'' below). In the absence of these structural weaknesses, it is not possible to assess a pawn formation as good or bad—much depends on the position of the pieces. The pawn formation does determine the overall strategies of the players to a large extent, however, even if arising from unrelated openings. Pawn formations symmetrical about a vertical line (such as the ''e5 Chain'' and the ''d5 Chain'') may appear similar, but they te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 conne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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 assessing a position. Valuation systems almost always assign a value of 1 point to the pawn, typically as its average value in the starting position. 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 provide only a rough idea of the state of play. The actual value of a piece depends on the game situation and can differ considerably from the standard valuation. A well posted bishop may be more valuable than a passive rook, while a badly placed piece may be completely trapped and thus almost worthless. Chess engines conventionally output their assessment of a position in terms of 'centipawns' (cp), where 100 cp = 1 pawn. In addition to the balance, this assessment incorporates strategic features of the pos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vlastimil Hort
Vlastimil Hort (born 12 January 1944) is a German chess Grandmaster. During the 1960s and 1970s he was one of the world's strongest players and reached the 1977–78 Candidates Tournament for the World Chess Championship, but never qualified for a competition for the actual title. Hort was born in Kladno, Czechoslovakia and was a citizen of Czechoslovakia for the first part of his chess career. He achieved the Grandmaster title in 1965. He won a number of major international tournaments ( Hastings 1967–68, Skopje 1969, etc.) and national championships (1970, 1971, 1972, 1975, and 1977). He gained recognition as one of the strongest non-Soviet players in the world, which led to him representing the "World" team in the great "USSR vs. Rest of the World" match of 1970, where he occupied fourth board and had an undefeated +1 score against the Soviet Grandmaster Lev Polugaevsky—in some respects his greatest result. He defected to the West in 1985, moving to West Germany a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Van Der Wiel
Van der Wiel in 1983, thumb John van der Wiel (born 9 August 1959) is a Dutch chess grandmaster. He is a two-time Dutch Chess Champion. Chess career Born in 1959, Van der Wiel won the ''Daniël Noteboom tournament'' in Leiden in 1976 and 1977. He won the European Junior Chess Championship in 1978, and was awarded the Grandmaster title in 1982. He won the Dutch Chess Championship in 1984 and 1986. He was between 1979 and 2004 playing in this championship for 26 consecutive times. Besides winning two times, he became nine times second. He was a participant in the Chess Olympiads of 1980, 1982, 1984 and from 1988 up to 1998. He has competed in several Interzonal tournaments: Moscow (1982) where he finished in 11th–12th place, and Biel (1985) 4th–6th place (where he lost a playoff for the final Candidates Tournament place to Nigel Short). His best results in the other international tournaments have included Sochi (1980) 4th–5th place; Wijk aan Zee (1981, additional to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vladimir Nenarokov
Vladimir Ivanovich Nenarokov (January 4, 1880 – December 13, 1953) was a Russian chess master and theoretician. Born in Moscow, he was one of the strongest masters in his home town around 1900. In 1899, he tied for 6-7th in Moscow (1st Russian Championship, Mikhail Chigorin won). In 1900 he won the first Moscow City Championship. In 1901, he took 5th in Moscow (2nd RUS-ch, Chigorin won). In 1905, he drew a match with Savielly Tartakower (+2 –2 =0); won against Fyodor Duz-Khotimirsky (+5 –3 =1) in 1907, and won against the sixteen-year-old Alexander Alekhine (+3 –0 =0) in 1908. Nenarokov won the Moscow Championship again in 1908. In 1916, he took 2nd, behind Alekhine, in Moscow. He also took 2nd, behind Alekhine, and ahead of Abram Rabinovich, at Moscow 1918 (''Triangular''). He took 3rd at the 3rd Moscow championships in 1921 (Grigoriev won); tied for 3rd-5th at Petrograd 1923 (2nd USSR Championship, Peter Romanovsky won); tied for 6-8th at Moscow 1924 (3rd USSR-ch, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
