Semi-open games

King's Pawn Game

1.e4

The King's Pawn Game starts with 1.e4 and is catalogued under ECO B00, in the semi-open games half of the book. The catalog indexes 38 lines inside it, grouped into 35 named variations.

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Current setup

Move ideas

  1. 1.e4

    Claims the center with a pawn and opens lines for the queen and king’s bishop.

    Idea: Build quick development and make early castling possible.

  2. 1…Nf6

    Develops with tempo by attacking the e4-pawn immediately.

    Idea: Invite White’s pawns forward, then undermine the space they gain.

  3. 2.d3

    Advances to d3 to claim central space and control nearby key squares.

    Idea: Give the pieces room to develop behind a durable central foothold.

Book continuations

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0 moves
This is the end of the indexed line.

Named variations

Each line below is an indexed entry under King's Pawn Game. Open one to load it on the board and keep exploring from that position.

11 more named lines sit inside this family — the tree above walks all of them.

Openings from the same volume

ECO groups openings by the structures they lead to, so these families tend to share plans with the King's Pawn Game.