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Bishop And Knight Mate
In chess, the bishop and knight checkmate is the checkmate of a bare king, lone king (chess), king by an opposing king, bishop (chess), bishop, and knight (chess), knight. With the stronger side to move, checkmate can be in at most thirty-three moves from almost any starting position. Although it is classified as one of the four basic checkmates, the bishop and knight checkmate occurs in practice only approximately once in every 6,000 games. History A method for checkmate applicable when the lone king is in the corner of the opposite color from the bishop (the "wrong" corner, where checkmate cannot be forced), was given by François-André Danican Philidor in the 1777 update to his famous 1749 treatise, ''L'Analyse des Échecs''. He called attention to the route of the knight now known as the #The "W manoeuvre", "W manoeuvre". Another method, known as #Delétang's triangle method, "Delétang's Method" or "Delétang's Triangles", applicable when the lone king is unable to reac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chess Kll45
Chess is a board game for two players. It is an abstract strategy game that involves no hidden information and no elements of chance. It is played on a square board consisting of 64 squares arranged in an 8×8 grid. The players, referred to as "White" and "Black", each control sixteen pieces: one king, one queen, two rooks, two bishops, two knights, and eight 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. The recorded history of chess goes back to at least the emergence of chaturanga—also thought to be an ancestor to similar games like and —in seventh-century India. After its introduction in Persia, it spread to the Arab world and then to Europe. The modern rules of chess emerged in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Master
FIDE titles are awarded by the international chess governing body FIDE (''Fédération Internationale des Échecs'') for outstanding performance. The highest such title is Grandmaster (GM). Titles generally require a combination of Elo rating and norms (performance benchmarks in competitions including other titled players). Once awarded, titles are held for life except in cases of fraud or cheating. Open titles may be earned by all players, while women's titles are restricted to female players. Many strong female players hold both open and women's titles. FIDE also awards titles for arbiters, organizers and trainers. Titles for correspondence chess, chess problem composition and chess problem solving are no longer administered by FIDE. A chess title, usually in an abbreviated form, may be used as an honorific. For example, Magnus Carlsen may be styled as " GM Magnus Carlsen". History The term "master" for a strong chess player was initially used informally. From the late 19 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chess Master
A chess title is a title regulated by a chess governing body and bestowed upon players based on their performance and rank. Such titles are usually granted for life. The international chess governing body FIDE grants several titles, the most prestigious of which is Grandmaster (chess), Grandmaster; many national chess federations also grant titles such as "National Master". More broadly, the term "master" can refer to any highly skilled chess player. Over-the-board chess In general, a ''chess master'' is a player of such skill that they can usually beat most amateurs. Among chess players, the term is often abbreviated to ''master''. The establishment of the world chess body, Fédération Internationale des Échecs (FIDE), saw the creation of titles superior to the "national master" titles. In 1950, FIDE created the titles "Grandmaster (chess), Grandmaster" and "International Master", the requirements for which were increasingly formalized over the years. In 1978, FIDE created the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United States
The United States of America (USA), also known as the United States (U.S.) or America, is a country primarily located in North America. It is a federal republic of 50 U.S. state, states and a federal capital district, Washington, D.C. The 48 contiguous states border Canada to the north and Mexico to the south, with the semi-exclave of Alaska in the northwest and the archipelago of Hawaii in the Pacific Ocean. The United States asserts sovereignty over five Territories of the United States, major island territories and United States Minor Outlying Islands, various uninhabited islands in Oceania and the Caribbean. It is a megadiverse country, with the world's List of countries and dependencies by area, third-largest land area and List of countries and dependencies by population, third-largest population, exceeding 340 million. Its three Metropolitan statistical areas by population, largest metropolitan areas are New York metropolitan area, New York, Greater Los Angeles, Los Angel ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypotenuse
In geometry, a hypotenuse is the side of a right triangle opposite to the right angle. It is the longest side of any such triangle; the two other shorter sides of such a triangle are called '' catheti'' or ''legs''. Every rectangle can be divided into a pair of right triangles by cutting it along either diagonal; the diagonals are the hypotenuses of these triangles. The length of the hypotenuse can be found using the Pythagorean theorem, which states that the square of the length of the hypotenuse equals the sum of the squares of the lengths of the two legs. Mathematically, this can be written as a^2 + b^2 = c^2, where ''a'' is the length of one leg, ''b'' is the length of another leg, and ''c'' is the length of the hypotenuse. For example, if one of the legs of a right angle has a length of 3 and the other has a length of 4, then their squares add up to 25 = 9 + 16 = 3 × 3 + 4 × 4. Since 25 is the square of the hypotenuse, the length of the hypotenuse is the square r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Triangle
A triangle is a polygon with three corners and three sides, one of the basic shapes in geometry. The corners, also called ''vertices'', are zero-dimensional points while the sides connecting them, also called ''edges'', are one-dimensional line segments. A triangle has three internal angles, each one bounded by a pair of adjacent edges; the sum of angles of a triangle always equals a straight angle (180 degrees or π radians). The triangle is a plane figure and its interior is a planar region. Sometimes an arbitrary edge is chosen to be the ''base'', in which case the opposite vertex is called the ''apex''; the shortest segment between the base and apex is the ''height''. The area of a triangle equals one-half the product of height and base length. In Euclidean geometry, any two points determine a unique line segment situated within a unique straight line, and any three points that do not all lie on the same straight line determine a unique triangle situated w ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yasser Seirawan
Yasser Seirawan (; born March 24, 1960) is a Syrian-born American chess grandmaster and four-time United States Chess Championship, United States champion. He won the World Junior Chess Championship in 1979. Seirawan is also a published chess author and commentator. Early life Seirawan was born in Damascus, Syria. His father was Syrian and his mother an English nurse from Nottingham, where he spent some time in his early childhood. When he was seven, his family immigrated to Seattle, Washington, where he attended Queen Anne Elementary School, Edmond S. Meany Middle School, Meany Middle School, and Garfield High School (Seattle, Washington), Garfield High School. He honed his game at a now-defunct coffeehouse, the Last Exit on Brooklyn, playing against the likes of Latvian-born master Viktors Pupols and six-time Washington (state), Washington State Champion James Harley McCormick. Career Seirawan began playing chess at 12; at 13, he became Washington junior champion. At 19, he ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Draw (chess)
In chess, there are a number of ways that a game can end in a draw, in which neither player wins. Draws are codified by various rules of chess including stalemate (when the player to move is not in check (chess), check but has no legal move), threefold repetition (when the same position occurs three times with the same player to move), and the fifty-move rule (when the last fifty successive moves made by both players contain no or pawn (chess), pawn move). Under the standard FIDE rules, a draw also occurs in a ''dead position'' (when no sequence of legal moves can lead to checkmate), most commonly when neither player has sufficient to checkmate the opponent. Unless specific tournament rules forbid it, players may draw by agreement, agree to a draw at any time. Ethical considerations may make a draw uncustomary in situations where at least one player has a reasonable chance of winning. For example, a draw could be called after a move or two, but this would likely be thought unsp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World Junior Chess Championship
The World Junior Chess Championship is an under-20 chess tournament (players must have been under 20 years old on 1 January in the year of competition) organized by the World Chess Federation (FIDE). The idea was the brainchild of William Ritson-Morry, who organized the 1951 inaugural event to take place in Birmingham, England. Subsequently, it was held every two years until 1973, when an annual schedule was adopted. In 1983, a separate tournament for girls was established. The first championship was an 11-round Swiss system tournament. In subsequent championships, the entrants were divided into sections, and preliminary sectional tournaments were used to establish graded finals sections (Final A, Final B, etc.). Since 1975 the tournaments have returned to the Swiss format. Originally the winner of the open tournament was awarded the title International Master if he had not already received it. Currently the winner receives the Grandmaster title, and the second and third-pl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexander Morozevich
Alexander Sergeyevich Morozevich (; born July 18, 1977) is a Russian chess player. He was awarded the title of Grandmaster by FIDE in 1994. Morozevich is a two-time World Championship candidate (2005, 2007), two-time Russian champion and has represented Russia in seven Chess Olympiads, winning numerous team and board medals. He has won both the Melody Amber (alone 2002, shared 2004, 2006, 2008) and Biel (2003, 2004, 2006) tournaments several times. Morozevich is known for his aggressive and unusual playing style. His peak ranking was second in the world in July 2008. Career His first win in an international tournament was in 1994, when at the age of 17 he won the Lloyds Bank tournament in London with a score of 9½ points out of 10. In 1994 he also won the Pamplona tournament, a victory he repeated in 1998. In 1997 Morozevich was the top seed at the World Junior Chess Championship, but lost to the eventual champion, American Tal Shaked, in a bishop and knight checkmate. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tal Shaked
Tal Shaked is an American chess grandmaster who is best known for winning the World Junior Championship in 1997. Chess career Shaked learned the game at the age of seven, and developed his chess skills in the scholastic chess organizations of Tucson, Arizona. As a junior, Shaked won several national scholastic championships, including the 1987 National Primary Championship, the 1990 National Elementary Championship, the 1991 National K-8 Championship, the 1992 National K-8 Championship, the 1992 U.S. Cadet (under 16) Championship, and the 1995 U.S. Junior (under 20) Championship; he also won the 1995 National Open. Shaked won the Laura Aspis Prize in 1991 as the number-one rated American chess player under the age of 13, and that same year became the youngest ever winner of the Arizona State Championship. Shaked's victory at the 1995 US Junior Championship granted him a place in the 1996 U.S. Chess Championship. Although he was by far the youngest and lowest-rated player in t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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] |
