Indian defenses

Nimzo-Indian Defense

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4

The Nimzo-Indian Defense starts with 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 and is catalogued under ECO E20, in the indian defenses half of the book. The catalog indexes 99 lines inside it, grouped into 68 named variations, and the position after those moves has 1 playable continuation to walk from here.

Opening repertoire map

Root edges show how often each move is played around your Elo. Use the arrow on a position to reveal the next replies.

Current position
Nimzo-Indian Defense: Sämisch Variation, Keres Variation
16 plies
Sämisch Variation, Romanovsky Variation
Popularity by Elo
Share of Lichess blitz, rapid, and classical games that continued with each move.
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Current setup

Move ideas

  1. 1.d4

    Takes central space with a protected pawn and frees the queen’s bishop.

    Idea: Build a stable center that supports a broad positional setup.

  2. 1Nf6

    Develops a knight and prevents White from occupying e4 unchallenged.

    Idea: Keep the central pawns flexible and choose an Indian setup after White commits.

  3. 2.c4

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

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

  4. 2e6

    Advances to e6 to claim central space and control nearby key squares.

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

  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. 3Bb4

    Develops the bishop to b4, bringing it into the game.

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

  7. 4.f3

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

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

  8. 4d5

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

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

  9. 5.a3

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

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

  10. 5Bxc3+

    Captures the knight on c3 and changes the local pawn or piece balance, forcing the king to answer a check.

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

  11. 6.bxc3

    Captures the bishop on c3 and changes the local pawn or piece balance.

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

  12. 6c5

    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.cxd5

    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.

  14. 7Nxd5

    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.

  15. 8.dxc5

    Captures the pawn on c5 and changes the local pawn or piece balance.

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

Book continuations

Waiting for Lichess game popularity.

1 move

Named variations

Each line below is an indexed entry under Nimzo-Indian Defense. Open one to load it on the board and keep exploring from that position.

44 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 Nimzo-Indian Defense.