King's Pawn Game
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- This article uses algebraic notation to describe chess moves.
The term King's Pawn Game refers to any chess opening where White opens with 1. e4, the most popular of the twenty possible opening moves. Since nearly all of these openings have names of their own, the term "King's Pawn Game", unlike Queen's Pawn Game, is rarely used to describe the opening of the game.
Advancing the king's pawn up two squares is highly useful because it is an early stab for center and it frees the queen and bishop so that they can be developed. Robert Fischer has said the King's Pawn Game is the "Best by test."
King's Pawn Games are further classified by whether Black responds with 1...e5 or not. Openings beginning with 1. e4 e5 are called Double King's Pawn Games (or Openings), Symmetrical King's Pawn Games (or Openings), or Open Games—these terms are equivalent. Openings where Black responds to 1. e4 with a move other than 1...e5 are called Asymmetrical King's Pawn Games or Semi-Open Games.
The Encyclopedia of Chess Openings classifies all King's Pawn Games into volumes B or C. Volume C is used if the game starts with 1. e4 e6 (the French Defence) or 1. e4 e5. Volume B is used if Black answers 1. e4 with any other move. The rare instances where the opening does not fall into a more specific category than "King's Pawn Game" are included in codes B00, C20, and C50.
The most common continuations to 1. e4 is the Sicilian Defence where black plays 1...c5. The Sicilian Defence allows black to indirectly fight for the center by stopping 2. d4.