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Endgame Studies
In the game of chess, an endgame study, or just study, is a composed position—that is, one that has been made up rather than played in an actual game—presented as a sort of puzzle, in which the aim of the solver is to find the essentially unique way for one side (usually White) to win or draw, as stipulated, against any moves the other side plays. If the study does not end in a mate or stalemate, it should be obvious that the game is either won or drawn, and White can have a selection of many different moves. There is no limit to the number of moves which are allowed to achieve the win; this distinguishes studies from the genre of direct mate problems (e.g. "mate in 2"). Such problems also differ qualitatively from the very common genre of tactical puzzles based around the middlegame, often based on an actual game, where a decisive tactic must be found. Composed studies Composed studies predate the modern form of chess. Shatranj studies exist in manuscripts from the 9th centur ... [...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, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chess Endgame
In chess and other similar games, the endgame (or end game or ending) is the stage of the game when few pieces are left on the board. The line between middlegame and endgame is often not clear, and may occur gradually or with the quick exchange of a few pairs of pieces. The endgame, however, tends to have different characteristics from the middlegame, and the players have correspondingly different strategic concerns. In particular, pawns become more important as endgames often revolve around attempting to promote a pawn by advancing it to the eighth . The king, which normally should stay hidden during the game should become active in the endgame, as it can help escort pawns to the promotion square, attack enemy pawns, protect other pieces, and restrict the movement of the enemy king. All chess positions with up to seven pieces on the board have been solved, that is, the outcome (win, loss, or draw) of best play by both sides is known, and textbooks and reference works teach th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saavedra Position
The Saavedra position is one of the best-known chess endgame studies. It is named after the Spanish priest Fernando Saavedra (1849–1922), who lived in Glasgow during the late 19th century. Though not a strong player, he spotted a win involving a dramatic underpromotion in a position previously thought to have been a draw. This is among a minority of positions where king and pawn can win against a king and rook, and one of the most famous examples of underpromotion in chess. It is also a rare example of a player being famous for a single move. Solution The position as it is usually given today, with White to move and win, is shown in the diagram. The solution is: :1. c7 Rd6+ 2. Kb5 (If 2.Kc5 then Rd1 threatening a skewer via 3...Rc1; if instead 2.Kb7? then Rd7 pins the pawn, allowing black to capture it to assure a draw.) :2... Rd5+ Or 2...Rd2 3.c8=Q Rb2+ 4.Ka4 Ra2+ 5.Kb3 Rb2+ 6.Kc3 and White wins. :3. Kb4 Rd4+ 4. Kb3 Rd3+ 5. Kc2 Rd4! 6. c8=R! Threatening 7.Ra8+; instead 6. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Chess Endgame Study Composers
Note: Russian names may be written with other spellings. The list is ordered alphabetically by surname. * Yochanan Afek (born in Tel Aviv 1952). Israeli chess master and composer of endgame studies and problems. Grandmaster for chess compositions (2015). He published about 120 studies and won many awards, e.g. eleven first prizes. * Iuri Akobia (b. 1937–2014). Georgian composer of over 300 studies and author of many books on endgame composition, among which 4332 Studies with Stalemate, 4492 Studies with Mate, 4324 Studies with Positional draw. By profession a radiotechnical engineer, he worked for many years in the Georgian National TV station. * Friedrich Amelung (1842–1909). Estonian composer of about 230 studies. *Ghamiet Amirjan (b. 1934). Armenian composer of over 300 studies. *Yuri Averbakh (b. 1922). Russian Grandmaster (winner of a Soviet Championship in 1954) and composer of over 200 studies, many of which give important contributions to endgame theory. With Chekho ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stockfish (chess)
Stockfish is a free and open-source chess engine, available for various desktop and mobile platforms. It can be used in chess software through the Universal Chess Interface. Stockfish has consistently ranked first or near the top of most chess-engine rating lists and, as of October 2022, is the strongest CPU chess engine in the world. It has won the Top Chess Engine Championship 13 times and the Chess.com Computer Chess Championship 19 times. Stockfish is developed by Marco Costalba, Joona Kiiski, Gary Linscott, Tord Romstad, Stéphane Nicolet, Stefan Geschwentner, and Joost VandeVondele, with many contributions from a community of open-source developers. It is derived from Glaurung, an open-source engine by Tord Romstad released in 2004. Features Stockfish can use up to 1024 CPU threads in multiprocessor systems. The maximal size of its transposition table is 32 TB. Stockfish implements an advanced alpha–beta search and uses bitboards. Compared to other engines, it is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Frédéric Lazard
Frédéric Lazard (20 February 1883, in Marseille – 18 November 1948, in Le Vésinet) was a French chess master, problemist and journalist. He lived in Paris, where he played in many local tournaments. He took twice 4th place in 1905, shared 3rd in 1908, took 3rd (Arnold Aurbach won) in 1909, shared 2nd behind H. Weinstein in 1909, won ahead of Amédée Gibaud in 1910, tied for 1st with Aristide Gromer in 1912, took 4th in 1914, and shared 2nd, behind Alphonse Goetz, at Lyon 1914. In 1912, he drew a match with Gibaud (3–3), and lost to Edward Lasker (0.5–2.5). In 1913, he drew with Smirnov (1.5–1.5). After World War I, he won at Paris 1920, took 2nd at Paris 1922 (''Triangular'', André Muffang won), represented France in 1st unofficial Chess Olympiad at Paris 1924, took 9th at Strasbourg 1924 (French Chess Championship, Robert Crépeaux won), tied for 2nd-3rd at Nice 1925 (FRA-ch, Crépeaux won), shared 1st with André Chéron at Biarritz 1926 (FRA-ch), took 13th i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elo Ratings
The Elo rating system is a method for calculating the relative skill levels of players in zero-sum games such as chess. It is named after its creator Arpad Elo, a Hungarian-American physics professor. The Elo system was invented as an improved chess-rating system over the previously used Harkness system, but is also used as a rating system in association football, American football, baseball, basketball, pool, table tennis, and various board games and esports. The difference in the ratings between two players serves as a predictor of the outcome of a match. Two players with equal ratings who play against each other are expected to score an equal number of wins. A player whose rating is 100 points greater than their opponent's is expected to score 64%; if the difference is 200 points, then the expected score for the stronger player is 76%. A player's Elo rating is represented by a number which may change depending on the outcome of rated games played. After every game, the winn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rook (chess)
The rook (; ♖, ♜) is a piece in the game of chess. It may move any number of squares horizontally or vertically without jumping, and it may an enemy piece on its path; additionally, it may participate in castling. Each player starts the game with two rooks, one in each corner on their own side of the board. Formerly, the rook (from Persian رخ ''rokh''/''rukh'', meaning "chariot") was alternatively called the tower, marquess, rector, and comes (count or earl). The term "castle" is considered to be informal, incorrect, or old-fashioned. Placement and movement The white rooks start on squares a1 and h1, while the black rooks start on a8 and h8. The rook moves horizontally or vertically, through any number of unoccupied squares (see diagram). The rook cannot jump over pieces. The rook may capture an enemy piece by moving to the square on which the enemy piece stands, removing it from play. The rook also participates with the king in a special move called castling, wherein i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
King (chess)
The king (♔, ♚) is the most important piece in the game of chess. It may move to any adjoining square; it may also perform a move known as castling. If a player's king is threatened with capture, it is said to be in check, and the player must remove the threat of on the next move. If this cannot be done, the king is said to be in checkmate, resulting in a loss for that player. A player cannot make any move that places their own king in check. Despite this, the king can become a strong offensive piece in the endgame or, rarely, the middlegame. In algebraic notation, the king is abbreviated by the letter K among English speakers. The white king starts the game on e1; the black king starts on e8. Unlike all other pieces, only one king per player can be on the board at any time, and the kings are never removed from the board during the game. Placement and movement The white king starts on e1, on the first to the right of the queen from White's perspective. The black kin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alexey Selezniev
Alexey (Alex) Sergeyevich Selezniev (russian: Алексе́й Серге́евич Селезнёв, alternative transliterations: Selesniev, Selesniew, Selesnev, Selesnieff; pronounced "selezNYOFF"; 1888June 1967) was a chess master and chess composer. Selezniev was born in Tambov, Russian Empire, into a wealthy merchant Russian family, and was a graduate from Moscow University's law faculty. He played in a number of pre-revolutionary tournaments at the Moscow Chess Club. He tied for 8-10th at Vilna 1912 (7th RUS-ch, B tourn, Karel Hromadka won). In 1913, he tied for 1st-2nd, tied for 4-5th, and tied for 5-6th in Moscow. In July–August 1914, he played in Mannheim (19th DSB Congress), and tied for 6-10th in interrupted tournament (''Hauptturnier A''). After the declaration of war against Russia, eleven “Russian players” ( Alekhine, Bogoljubow, Bogatyrchuk, Flamberg, Koppelman, Maliutin, Rabinovich, Romanovsky, Saburov, Selezniev, Weinstein) from the Mannheim tournam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sacrifice (chess)
In chess, a sacrifice is a move that gives up a piece with the objective of gaining tactical or positional compensation in other forms. A sacrifice could also be a deliberate exchange of a chess piece of higher value for an opponent's piece of lower value. Any chess piece except the king may be sacrificed. Because players usually try to hold on to their own pieces, offering a sacrifice can come as an unpleasant surprise to one's opponent, putting them off balance and causing them to waste precious time trying to calculate whether the sacrifice is sound or not, and whether to accept it. Sacrificing one's queen (the most valuable piece), or a string of pieces, adds to the surprise, and such games can be awarded . Types of sacrifice Real versus sham Rudolf Spielmann proposed a division between sham and real sacrifices: * In a ''real sacrifice'', the sacrificing player will often have to play on with less than their opponent for quite some time. * In a ''sham sacrifice'', t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
