Open games & French

King's Gambit Declined

1.e4 c5 2.f4 e5

The King's Gambit Declined starts with 1.e4 c5 2.f4 e5 and is catalogued under ECO C30, in the open games & french half of the book. The catalog indexes 53 lines inside it, grouped into 50 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. 1e5

    Meets White’s center directly and opens lines for Black’s queen and bishop.

    Idea: Fight for equal central space in a balanced, open position.

  3. 2.f4

    Advances the f-pawn to gain kingside space and control new squares.

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

  4. 2d5

    Advances to d5 to claim central space and control nearby key squares.

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

  5. 3.exd5

    Captures the pawn on d5 and changes the local pawn or piece balance.

    Idea: Open lines in the center and reshape the center for the next phase.

  6. 3e4

    Advances to e4 to claim central space and control nearby key squares.

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

  7. 4.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.

  8. 4Nf6

    Develops the knight to f6, bringing it into the game.

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

  9. 5.Nd2

    Develops the knight to d2, bringing it into the game.

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

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 Gambit Declined. Open one to load it on the board and keep exploring from that position.

26 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 Gambit Declined.