Turton Doubling

	Turton Doubling Turton doubling is a manoeuvre in chess in which a piece moves along a line (rank, file or diagonal), then a similarly-moving piece moves onto the same line in front of it, then this second piece moves again along this line, in the opposite direction to that of the first. Use of the term is effectively limited to the field of chess problems, although it happens in real games a well (especially when White moves the bishop on d3 back to let the queen in front to threaten Qh7#, and analogous for Black). The idea can be understood in reference to the problem to the right, the first to demonstrate the manoeuvre, composed by its eponym, Henry Turton. A mate in three, the solution is 1.Bh8 (threatening 2.Qa3#) 1...b4 2.Qg7 Ra8 (defending against 3.Qa7#) 3.Qxb2#. The bishop moves along the diagonal a1-h8, then the queen moves onto that same diagonal, then the queen moves again in the opposite direction to the bishop. Specific types of Turton doubling are the Loyd-Turton, in which the fi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	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, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Chess Problem A chess problem, also called a chess composition, is a puzzle set by the composer using chess pieces on a chess board, 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 over-the-board 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 good deal of specialized jargon used in connection with chess problems; see glossary of chess problems for a list. Definition The term "chess problem" is not sharply defined: there is no clear demarcation between chess compositions on the one hand and puzzles or tactical exercises on the other. In practice, however, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Henry Turton Henry may refer to: People Henry (given name) Henry (surname) * Henry Lau, Canadian singer and musician who performs under the mononym Henry Royalty * Portuguese royalty King-Cardinal Henry, King of Portugal Henry, Count of Portugal, Henry of Burgundy, Count of Portugal (father of Portugal's first king) Prince Henry the Navigator, Infante of Portugal Infante Henrique, Duke of Coimbra (born 1949), the sixth in line to Portuguese throne * King of Germany *Henry the Fowler (876–936), first king of Germany King of Scots (in name, at least) Henry Stuart, Lord Darnley (1545/6–1567), consort of Mary, queen of Scots Henry Benedict Stuart, the 'Cardinal Duke of York', brother of Bonnie Prince Charlie, who was hailed by Jacobites as Henry IX * Four kings of Castile: Henry I of Castile Henry II of Castile Henry III of Castile Henry IV of Castile * Five kings of France, spelt ''Henri'' in Modern French since the Renaissance to italianize the name and to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Zepler Doubling Zepler doubling is a manoeuvre in chess in which a piece moves along a certain line (rank, file or diagonal), then another friendly piece moves onto that same line, then the first piece moves again in the same direction as before. The term is effectively limited to the field of chess problems. The first problem to show the idea (shown to the right), by Erich Zepler himself, is a simple and clear demonstration of the manoeuvre. The straightforward doubling 1.Rgb2, threatening 2.Rb8#, fails to 1...Bxd6, so the more roundabout Zepler doubling is required: 1.Rb4 Bg7 (now 1...Bxd6 is no good because of 2.Rg8+) 2.Rgb2 any 3.Rb8#. Zepler doubling can be contrasted with another doubling manoeuvre, Turton doubling. References * David Hooper and Kenneth Whyld, "Erich Ernest Zepler" in ''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 f ... [...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 w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Chess Problems A chess problem, also called a chess composition, is a puzzle set by the composer using chess pieces on a chess board, 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 over-the-board 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 good deal of specialized jargon used in connection with chess problems; see glossary of chess problems for a list. Definition The term "chess problem" is not sharply defined: there is no clear demarcation between chess compositions on the one hand and puzzles or tactical exercises on the other. In practice, however, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]