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The Encyclopaedia of Chess Openings (ECO) is a reference work describing the state of opening theory in chess, originally published in five volumes from 1974 to 1979 by the Yugoslavian company Šahovski Informator (Chess Informant). It is currently undergoing its fifth edition. ECO may also refer to the opening classification system used by the ...
h. The starting position of chess. The opening is the initial stage of a chess game. It usually consists of established theory. The other phases are the middlegame and the endgame. [ 1 ] Many opening sequences, known as openings, have standard names such as " Sicilian Defense ".
This is a list of chess openings, organised by the Encyclopaedia of Chess Openings (ECO) code classification system.The chess openings are categorised into five broad areas ("A" through "E"), with each of those broken up into one hundred subcategories ("00" through "99").
The Encyclopaedia of Chess Openings has classified the English Opening under the codes A10 through A39: A10 1.c4; A11 1.c4 c6 (Caro-Kann Defensive System) A12 1.c4 c6 2.Nf3 d5 3.b3 (Also the Bogoljubov Variation of the Anglo-Slav Variation of the Réti Opening) A13 1.c4 e6 (Agincourt Defense)
The Scotch Game, or Scotch Opening, is a chess opening that begins with the moves: . 1. e4 e5 2. Nf3 Nc6 3. d4. Ercole del Rio, in his 1750 treatise Sopra il giuoco degli Scacchi, Osservazioni pratiche d’anonimo Autore Modenese ("On the game of Chess, practical Observations by an anonymous Modenese Author"), was the first author to mention what is now called the Scotch Game. [1]
A chess opening book is a book on chess openings. This is by far the most common type of literature on chess. These books describe many major lines, like the Sicilian Defence, Ruy Lopez, and Queen's Gambit, [1] as well as many minor variations of the main lines.
Sokolsky Opening. The Sokolsky Opening, also known as the Orangutan and the Polish Opening, is an uncommon chess opening that begins with the move: According to various databases, out of the twenty possible first moves from White, the move 1.b4 ranks ninth in popularity. [ 1 ] It is considered an irregular opening, so it is classified under the ...
Modern Chess Openings (usually called MCO) is a reference book on chess openings, first published in 1911 by the British players Richard Clewin Griffith (1872–1955) and John Herbert White (1880–1920). The fifteenth edition was published in 2008. Harry Golombek called it "the first scientific study of the openings in the twentieth century".
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