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2. Chess opening - Wikipedia

   en.wikipedia.org/wiki/Chess_opening

   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".

3. List of chess openings - Wikipedia

   en.wikipedia.org/wiki/List_of_chess_openings

   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").

4. Chess - Wikipedia

   en.wikipedia.org/wiki/Chess

   The chess machine is an ideal one to start with, since: (1) the problem is sharply defined both in allowed operations (the moves) and in the ultimate goal (checkmate); (2) it is neither so simple as to be trivial nor too difficult for satisfactory solution; (3) chess is generally considered to require "thinking" for skillful play; a solution of ...

5. Encyclopaedia of Chess Openings - Wikipedia

   en.wikipedia.org/.../Encyclopaedia_of_Chess_Openings

   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.

6. Chess theory - Wikipedia

   en.wikipedia.org/wiki/Chess_theory

   These books and later ones discuss games played with various openings, opening traps, and the best way for both sides to play. Certain sequences of opening moves began to be given names, some of the earliest being Damiano's Defense, the King's Gambit (1.e4 e5 2.f4), the Queen's Gambit (1.d4 d5 2.c4), and the Sicilian Defense (1.e4 c5). [23]

7. Ruy Lopez - Wikipedia

   en.wikipedia.org/wiki/Ruy_Lopez

   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 who recommended it for White in his book on chess. It is one of the most ...

8. Ponziani Opening - Wikipedia

   en.wikipedia.org/wiki/Ponziani_Opening

   The Ponziani Opening is a chess opening that begins with the moves: 1. e4 e5 2. Nf3 Nc6 3. c3. It is one of the oldest chess openings, having been discussed in literature by 1497. It was advocated by Howard Staunton, generally considered the world's strongest player from 1843 to 1851, in his 1847 book The Chess-Player's Handbook. For some ...

9. Queen's Gambit - Wikipedia

   en.wikipedia.org/wiki/Queen's_Gambit

   The Queen's Gambit is the chess opening that starts with the moves: [1]. 1. d4 d5 2. c4. It is one of the oldest openings and is still commonly played today. It is traditionally described as a gambit because White appears to sacrifice the c-pawn; however, this could be considered a misnomer as Black cannot retain the pawn without incurring a disadvantage.