Chess grandmaster Bobby Fischer said that the King's Pawn Game is "Best by test",[2] and proclaimed that "With 1.e4!

"[3][page needed] King's Pawn Games are further classified by whether Black responds with 1...e5 or not.

The Black responses which are given one or more chapters in the ECO are given below, ranked in order of popularity according to ChessBase.

[6] These openings sometimes lead to wild and exciting games, and are occasionally employed by weaker players to get better trained opponents "out-of-book".

1.Na3: Durkin 1.a3: Anderssen 1.b3: Nimzowitsch-Larsen 1.Nc3: Dunst 1.c3: Saragossa 1.d3: Mieses 1.e3: Van 't Kruijs 1.Nf3: Zukertort 1.f3: Barnes 1.g3: Benko 1.Nh3: Amar 1.h3: Clemenz