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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 (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.
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".
Opening book is often used to describe the database of chess openings given to computer chess programs (and related games, such as computer shogi). Such programs are quite significantly enhanced through the provision of an electronic version of an opening book. This eliminates the need for the program to calculate the best lines during ...
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.
S. Saragossa Opening; Scandinavian Defense; Scotch Game; Scotch Game, Classical Variation; Semi-Italian Opening; Semi-Slav Defense; Semi-Tarrasch Defense; Sicilian Defence
Genoa Opening (known as the Grob Attack) – 1.g4; Gent Gambit of the Amar Opening (Paris) – 1.Nh3 d5 2.g3 e5 3.f4 Bxh3 4.Bxh3 exf4 5.0-0 fxg3 6.hxg3; German Defence of the Polish Opening (Orangutan or Sokolsky Opening) – 1.b4 d5 2.Bb2 Qd6; Glasgow Kiss Variation of the Slav Defence – 1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.e3 Bf5 5.cxd5 cxd5 6.Qb3 Nc6
The Ruy Lopez (/ r ɔɪ, ˈ r uː i /; Spanish: [ˈruj ˈlopeθ]), [1] also called the Spanish Opening or Spanish Game, is a chess opening characterised by the moves: 1. e4 e5 2. Nf3 Nc6 3. Bb5. The Ruy Lopez is named after 16th-century Spanish priest Ruy López de Segura. It is one of the most popular openings, with many variations.