Semi-open games

Scandinavian Defense

1.e4 d5

The Scandinavian Defense starts with 1.e4 d5 and is catalogued under ECO B01, in the semi-open games half of the book. The catalog indexes 45 lines inside it, grouped into 42 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. 1d5

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

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

  3. 2.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.

  4. 2Qxd5

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

    Idea: Remove an active defender and improve the moving piece’s influence.

  5. 3.Nc3

    Develops the knight to c3, bringing it into the game.

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

  6. 3Qa5

    Repositions the queen to a5, where it influences a new part of the board.

    Idea: Coordinate threats carefully while avoiding unnecessary tempi against the queen.

  7. 4.d4

    Advances to d4 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.Nf3

    Develops the knight to f3, bringing it into the game.

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

  10. 5Bf5

    Develops the bishop to f5, bringing it into the game.

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

  11. 6.Ne5

    Repositions the knight to e5, where it influences a new part of the board.

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

  12. 6c6

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

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

  13. 7.g4

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

    Idea: Prepare a fianchetto or discourage the opponent’s expansion on that wing.

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 Scandinavian Defense. Open one to load it on the board and keep exploring from that position.

18 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 Scandinavian Defense.