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Pin (chess)
In chess, a pin is a tactic in which a defending piece cannot move out of an attacking piece's line of attack without exposing a more valuable defending piece. Moving the attacking piece to effect the pin is called ''pinning''; the defending piece restricted by the pin is described as ''pinned''. Only a piece that can move any number of squares along a horizontal, vertical, or diagonal line (i.e. a bishop, rook, or queen) can pin. Any piece can be pinned except the king, which is the most valuable piece. The inverse of a pin is a skewer, in which a more valuable piece under direct attack may move to expose a less valuable piece to an attack. Types Absolute pin An ''absolute pin'' is one where the piece shielded by the pinned piece is the king. In this case it is illegal to move the pinned piece out of the line of attack, as that would place one's king in check (see diagram). A piece pinned in this way can still give check or defend another piece from capture by the oppos ... [...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] |
Battery (chess)
A battery in chess is a formation that consists of two or more pieces on the same rank, file, or diagonal. It is a tactic involved in planning a series of captures to remove the protection of the opponent's king, or to simply gain in the exchanges. Other chess authors limit battery to "an arrangement of two pieces ''in line with the enemy king'' on a rank, file, or diagonal so that if the middle piece moves a discovered check will be delivered." However, in Chessgames.com blogs and game annotations of other chess websites, the term is also used in cases where moving the middle piece will uncover a threat other than a check along the opened line. Discussion and examples It is particularly effective to form a battery using rooks because they may be combined to occupy the same rank or file. In theory, bishops may also form a battery in a case of underpromotion of a pawn to a bishop occupying the same diagonal as the other bishop. In actual games, however, the queen and rooks are o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oxford University Press
Oxford University Press (OUP) is the university press of the University of Oxford. It is the largest university press in the world, and its printing history dates back to the 1480s. Having been officially granted the legal right to print books by decree in 1586, it is the second oldest university press after Cambridge University Press. It is a department of the University of Oxford and is governed by a group of 15 academics known as the Delegates of the Press, who are appointed by the vice-chancellor of the University of Oxford. The Delegates of the Press are led by the Secretary to the Delegates, who serves as OUP's chief executive and as its major representative on other university bodies. Oxford University Press has had a similar governance structure since the 17th century. The press is located on Walton Street, Oxford, opposite Somerville College, in the inner suburb of Jericho. For the last 500 years, OUP has primarily focused on the publication of pedagogical texts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
The Oxford Companion To Chess
''The Oxford Companion to Chess'' is a reference book on the game of chess written by David Vincent Hooper and Kenneth Whyld. The book is written in an encyclopedia format. The book belongs to the Oxford Companions series. Details The first edition of the book was published in 1984 by Oxford University Press. The second edition (1992) has over 2,500 entries, including rules, terms, strategies, tactics, over 500 brief biographies of famous players, and entries on more than 700 named openings and opening variations. In the back of the book is a comprehensive index of opening variations and sub-variations, listing 1,327 named variations. The book also discusses chess from other countries (such as shogi), chess variants (such as three dimensional chess), and some forms of fairy chess. Editions * First published in 1984 by Oxford University Press Oxford University Press (OUP) is the university press of the University of Oxford. It is the largest university press in the wor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chess Terminology
This glossary of chess explains commonly used terms in chess, in alphabetical order. Some of these terms have their own pages, like '' fork'' and ''pin''. For a list of unorthodox chess pieces, see Fairy chess piece; for a list of terms specific to chess problems, see Glossary of chess problems; for a list of named opening lines, see List of chess openings; for a list of chess-related games, see List of chess variants. A B , "lightning"] A #fast chess, fast form of chess with a very short time limit, usually three or five minutes per player for the entire game. With the advent of electronic chess clocks, the time remaining is often incremented by one or two seconds per move.Schiller 2003, p. 398 C ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chessgames
Chessgames.com is an Internet chess community with over 224,000 members. The site maintains a large database of chess games, where each game has its own discussion page for comments and analysis. Limited primarily to games where at least one player is of master strength, the database begins with the earliest known recorded games and is updated with games from current top-level tournaments. Basic membership is free, and the site is open to players at all levels of ability, with additional features available for Premium members. While the primary purpose of Chessgames.com is to provide an outlet for chess discussion and analysis, consultation games are periodically organized with teams of members playing either other teams of members or very strong masters, including a former US champion and two former world correspondence champions. Members can maintain their own discussion pages, and there are features to assist study of openings, endgames and sacrifices. The front page also feat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maxim Gorky
Alexei Maximovich Peshkov (russian: link=no, Алексе́й Макси́мович Пешко́в; – 18 June 1936), popularly known as Maxim Gorky (russian: Макси́м Го́рький, link=no), was a Russian writer and socialist political thinker and proponent. He was nominated five times for the Nobel Prize in Literature. Before his success as an author, he travelled widely across the Russian Empire changing jobs frequently, experiences which would later influence his writing. Gorky's most famous works are his early short stories, written in the 1890s (" Chelkash", " Old Izergil", and " Twenty-Six Men and a Girl"); plays '' The Philistines'' (1901), ''The Lower Depths'' (1902) and '' Children of the Sun'' (1905); a poem, "The Song of the Stormy Petrel" (1901); his autobiographical trilogy, '' My Childhood, In the World, My Universities'' (1913–1923); and a novel, '' Mother'' (1906). Gorky himself judged some of these works as failures, and ''Mother'' has b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vladimir Lenin
Vladimir Ilyich Ulyanov. ( 1870 – 21 January 1924), better known as Vladimir Lenin,. was a Russian revolutionary, politician, and political theorist. He served as the first and founding head of government of Soviet Russia from 1917 to 1924 and of the Soviet Union from 1922 to 1924. Under his administration, Russia, and later the Soviet Union, became a one-party socialist state governed by the Communist Party. Ideologically a Marxist, his developments to the ideology are called Leninism. Born to an upper-middle-class family in Simbirsk, Lenin embraced revolutionary socialist politics following his brother's 1887 execution. Expelled from Kazan Imperial University for participating in protests against the Russian Empire's Tsarist government, he devoted the following years to a law degree. He moved to Saint Petersburg in 1893 and became a senior Marxist activist. In 1897, he was arrested for sedition and exiled to Shushenskoye in Siberia for three years, where he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alekhine's Gun
Alekhine's gun is a formation in chess named after the former world chess champion Alexander Alekhine. It is a specific kind of battery. This formation was named after a game he played against Aron Nimzowitsch in Sanremo 1930, ending with Alekhine's decisive victory. Concept The idea consists of placing the two rooks stacked one behind another and the queen at the rear. This can lead to substantial material loss for the opponent as it places considerable pressure on the "target" of the gun, especially if it is pinned (in this case it was only four moves before ). Original "Alekhine's gun" game Here is the game that spawned Alekhine's gun: :Alexander Alekhine vs. Aron Nimzowitsch, San Remo 1930:1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. Bd2 Ne7 6. Nb5 Bxd2+ 7. Qxd2 0–0 8. c3 b6 9. f4 Ba6 10. Nf3 Qd7 11. a4 Nbc6 12. b4 cxb4 13. cxb4 Bb7 14. Nd6 f5 15. a5 Nc8 16. Nxb7 Qxb7 17. a6 Qf7 18. Bb5 N8e7 19. 0–0 h6 20. Rfc1 Rfc8 21. Rc2 Qe8 22. Rac1 Rab8 23. Qe3 Rc7 24. Rc3 Qd7 25. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Undermining (chess)
Undermining (also known as removal of the guard, or removing the defender) is a chess tactic in which a defensive piece is captured, leaving one of the opponent's pieces undefended or under-defended. The opponent has the unpalatable choice of recapturing or saving the undefended piece. A possible response is to sacrifice the piece whose defense was undermined before capturing the piece which just took the defender. Example Kramnik– Topalov in the seventh round of the 2004 Linares chess tournament reached the diagrammed position with White to play. The black knight on a4 is defended only by the black pawn on b5. White undermined the knight with 1. Bxb5. The game continued 1... Rxb5 2. Rxa4, with a net gain of a pawn for White. Black may attempt 1...Nxb2??, disposing of the unguarded knight and hoping for 2.Kxb2 Rxb5+ to regain the lost pawn. However, after 2.Rb3 Black can only save the knight with 2…Rxb5 3.Rxb5, leaving White an exchange up instead of just a pawn. See al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chess Tactic
In chess, a tactic is a sequence of moves that each makes one or more immediate threats ─ that is, a check, a material threat, a checkmating sequence threat, or the threat of another tactic ─ which culminates in the opponent being unable to respond to all of the threats without conceding an immediate benefit to the opponent. Most often, the immediate benefit takes the form of a material advantage or checkmating attack; however, some tactics are used for defensive purposes and can salvage material that would otherwise be lost, or to induce stalemate in an otherwise lost position. Tactics are usually contrasted with strategy, whereby the individual moves by themselves don't make indefensible threats, and the cumulative advantage of the moves takes longer to be capitalised on. In rough terms, the dichotomy can be summarised as tactics concerning short-term play and strategy concerning long-term play. Examples of strategic advantages are weaknesses in, compromised pawn structure ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Skewer (chess)
In chess, a skewer is an attack upon two pieces in a line and is similar to a pin. A skewer is sometimes described as a "reverse pin"; the difference is that in a skewer, the more valuable piece is the one under direct attack. The opponent is compelled to move the more valuable piece to avoid its capture, thereby exposing the less valuable piece which can then be captured (see chess piece relative value). Only (i.e. bishops, rooks, and queens) can skewer; kings, knights, and pawns cannot. Details Compared to the pin, a passive action with only an implied threat, the skewer is a direct attack upon the more valuable piece, making it generally a much more powerful and effective tactic. The victim of a skewer often cannot avoid losing ; the only question is which material will be lost. The skewer occurs less often than the pin in actual play. When it does occur, however, it is often decisive. Skewers can be broken down into two types: ''absolute'' and ''relative''. In an absolute ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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