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Interference (chess)
In the game of chess, interference occurs when the line between an attacked piece and its defender is interrupted by sacrificially interposing a piece. It is a chess tactic which seldom arises, and is therefore often overlooked. Opportunities for interference are rare because the defended object must be more valuable than the sacrificed piece, and the interposition must itself present a threat. Huczek defines interference as a tactic involving blocking moves that obstruct lines of attack. This definition may be expanded by including blocking moves that disrupt lines of defense. Examples In diagram A, White to play will apparently be obliged to retreat the knight from f5, because the squares to which it could advance are all guarded. The interference move 1.Nd6+, however, interrupts the black rook's defense of the black queen. If Black plays either 1...cxd6 or 1...Bxd6, White will capture Black's queen. Therefore, Black has no better play than 1...Rxd6 2.exd6 Qxe2 3.Rxe2 Bxd6 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Blackmar–Diemer Gambit
The Blackmar–Diemer Gambit (or BDG) is a chess opening characterized by the moves: :1. d4 d5 :2. e4 dxe4 :3. Nc3 where White intends to follow up with f3, usually on the fourth move. White obtains a tempo and a half-open f-file in return for a pawn, and as with most gambits, White aims to achieve rapid and active posting of their pieces in order to rapidly build up an attack at the cost of the gambit pawn. It is one of the few gambits available to White after 1.d4. History The Blackmar–Diemer Gambit arose as a development of the earlier Blackmar Gambit, named after Armand Blackmar, a relatively little-known New Orleans player of the late 19th century who popularized its characteristic moves (1.d4 d5 2.e4 dxe4 3.f3) and was the first player to publish analysis of the opening. The popularity of the original Blackmar Gambit, however, was short lived, as it was basically unsound, allowing Black to secure a superior position after White's immediate 3.f3 with 3...e5. In 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Glossary Of Chess Problems
This glossary of chess problems explains commonly used terms in chess problems, in alphabetical order. For a list of unorthodox pieces used in chess problems, see Fairy chess piece; for a list of terms used in chess is general, see Glossary of chess 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 specifi ...; for a list of chess-related games, see List of chess variants. A B C D E F G H I K L M N O P R S T U V W Z Notes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Holzhausen Interference , a municipality in the Rhein-Lahn district, Rhineland-Palatinate
* Holzhausen, ...
Holzhausen may refer to: Places ;Germany * Holzhausen, Münsing, a locality in the municipality of Münsing, Bavaria * Holzhausen am Ammersee, part of Utting on the Ammersee, Bavaria * Holzhausen über Aar, a village in Hessen * Holzhausen (Stralsund), a student village in Stralsund, Mecklenburg-Vorpommern * Holzhausen (Porta Westfalica), a village in the Porta Westfalica municipality, North Rhine-Westphalia * Holzhausen, Bad Laasphe, a village in the Siegen-Wittgenstein district, North Rhine-Westphalia *Holzhausen an der Haide Holzhausen an der Haide is a municipality in the Rhein-Lahn, district of Rhein-Lahn, in Rhineland-Palatinate, in western Germany. Holzhausen is the birthplace of Nicolaus August Otto, the inventor of the "Petrol engine, Otto Engine". References< ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Siegbert Tarrasch
Siegbert Tarrasch (; 5 March 1862 – 17 February 1934) was a German chess player, considered to have been among the strongest players and most influential theoreticians of the late 19th and early 20th century. Life Tarrasch was born in Breslau, in what was then Prussian Silesia and now is Poland. Having finished school in 1880, he left Breslau to study medicine in Berlin and then in Halle. With his family, he settled in Nuremberg, Bavaria, and later in Munich, setting up a successful medical practice. He had five children. Tarrasch was Jewish, converted to Christianity in 1909, and was a patriotic German who lost a son in World War I, yet he faced antisemitism in the early stages of the Third Reich. Chess career A medical doctor by profession, Tarrasch may have been the best player in the world in the early 1890s. He scored heavily against the ageing World Champion Wilhelm Steinitz in tournaments (+3−0=1) but refused an opportunity to challenge Steinitz for the world tit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Plachutta
The Plachutta is a device found in chess problems wherein a piece is sacrificially positioned in blockade to deny coverage of multiple distant squares required by the opposition. For example, two of an opponent's bishops, queen, or rooks are defending locations through an intersection square, and an enemy unit moved into that square blocks disrupts coverage in such a way that, even if captured, the previous defensive situation cannot be restored. The Plachutta is named after Joseph Plachutta (1827–1883), and related to a number of other problem themes: it can be regarded as a Würzburg–Plachutta brought about by a sacrifice on the critical square (a Würzburg-Plachutta itself being a pair of Holzhausen interferences); or it can be thought of as a Novotny with similarly moving (rather than differently moving) black pieces involved (a Novotny itself being a Grimshaw brought about by a white sacrifice on the critical square). It can also be compared to the anti-Bristol, in wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Grimshaw (chess)
A Grimshaw is a device found in 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 t ...s in which two pieces (usually a rook and bishop) arriving on a particular square mutually interfere with each other. It is named after the 19th-century problem composer Walter Grimshaw. The Grimshaw is one of the most common devices found in directmates. Examples with description The theme can be understood by reference to the displayed example by A. G. Corrias (published in ''Good Companion'', 1917). A. G. Corrias example The problem is a mate in two (White must move first and checkmate Black in two moves against any defense). The key is 1.Qb1, which threatens 2.Qb7#. Black has three ways to defend against this. * One is to play 1...c3, giving his king a new flight square at c4, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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Novotny (chess)
The Novotny (also often spelled as Nowotny, even in non-German sources) is a device found in chess problems named after a problem from 1854 by Antonín Novotný, though the first example was composed by Henry Turton in 1851. A piece is sacrificed on a square where it could be taken by two different opposing pieces (almost invariably a rook and bishop), but whichever makes the capture, it interferes with the other. It is essentially a Grimshaw brought about by a sacrifice on the critical square. This pattern can arise as part of a combination in an actual game, but it is extremely rare (see games below). Most chess players would not use the term "Novotny" to describe such a move, since that term is almost exclusively used in the context of chess problems. Examples Basic The device can be understood by reference to the problem shown here, a mate in two moves (White moves first, and must checkmate Black in two moves against any defence). The ' (first move of the solution) is 1.N ... [...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 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] |
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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] |