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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.
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 openings were published in five volumes of ECO, with volumes labeled ...
A chess opening theory table or ECO table (Encyclopaedia of Chess Openings) presents lines of moves, typically (but not always) from the starting position. Notated chess moves are presented in the table from left to right. Variations on a given line are given horizontally below the parent line.
The Encyclopaedia of Chess Openings (ECO) identifies the Colle System as an uncommon continuation of the Queen's Pawn Game, assigning it the code D05. [a] In the ECO, the Colle System is defined by the line 1.d4 d5 2.Nf3 Nf6 3.e3 e6 4.Bd3 c5 5.c3. [1] Paul van der Sterren gives an identical definition, with the same moves played in the same ...
This is a list of chess openings that are gambits. The gambits are organized into sections by the parent chess opening, giving the gambit name, ECO code, and defining moves in algebraic chess notation .
A common opening sequence is 1.d4 Nf6 2.c4 e6 3.g3, although various other openings can transpose into the Catalan. The Encyclopaedia of Chess Openings (ECO) lists codes E01–E09 for lines with 1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2; other lines are part of E00. In the Catalan, White adopts a combination of the Queen's Gambit and Réti Opening. White ...
The most important scheme of classifying chess openings for serious players is by ECO code, a series of 500 opening codes assigned by the Encyclopaedia of Chess Openings. Although these codes are invaluable for the serious study of the chess opening, they are not very practical for a broad survey of the chess opening as the codes obscure common ...
The Encyclopaedia of Chess Openings classifies the King's Indian Defence under the codes E60 through E99. The King's Indian is a hypermodern opening, where Black deliberately allows White control of the centre with pawns, with the view to subsequently challenge it. In the most critical lines of the King's Indian, White erects an imposing pawn ...