Semi-open games

Nimzowitsch Defense

1.e4 Nc6

The Nimzowitsch Defense starts with 1.e4 Nc6 and is catalogued under ECO B00, in the semi-open games half of the book. The catalog indexes 43 lines inside it, grouped into 41 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. 1Nc6

    Develops the knight to c6, bringing it into the game.

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

  3. 2.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.

  4. 2e5

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

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

  5. 3.dxe5

    Captures the pawn on e5 and changes the local pawn or piece balance.

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

  6. 3f6

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

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

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

17 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 Nimzowitsch Defense.