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. 1Nf6

    Develops with tempo by attacking the e4-pawn immediately.

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

  3. 2.e5

    Advances to e5 to claim central space and control nearby key squares.

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

  4. 2Nd5

    Repositions the knight to d5, where it influences a new part of the board.

    Idea: Improve the piece’s activity and support the next stage of the plan.

  5. 3.Bc4

    Develops the bishop to c4, bringing it into the game.

    Idea: Improve piece coordination and clear the back rank for castling and the rooks.

  6. 3Nb6

    Repositions the knight to b6, where it influences a new part of the board.

    Idea: Improve the piece’s activity and support the next stage of the plan.

  7. 4.Bb3

    Repositions the bishop to b3, where it influences a new part of the board.

    Idea: Improve the piece’s activity and support the next stage of the plan.

  8. 4c5

    Advances the c-pawn to gain queenside space and control new squares.

    Idea: Create useful wing space while keeping the central structure flexible.

  9. 5.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

Waiting for Lichess game popularity.

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.

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