Flank openings

Sodium Attack

1.Na3

The Sodium Attack starts with 1.Na3 and is catalogued under ECO A00, in the flank openings half of the book. The catalog indexes 4 lines inside it, grouped into 4 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
Sodium Attack
6 plies
Durkin Gambit
Popularity by Elo
Share of Lichess blitz, rapid, and classical games that continued with each move.
8
7
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5
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2
1
a
b
c
d
e
f
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h

Current setup

Move ideas

  1. 1.Na3

    Develops the knight to a3, bringing it into the game.

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

  2. 1…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.

  3. 2.Nc4

    Repositions the knight to c4, where it influences a new part of the board.

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

  4. 2…Nc6

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

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

  5. 3.e4

    Advances to e4 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.

1 move
f5Sodium Attack: Durkin Gambit1 named lineAdvances the f-pawn to gain kingside space and control new squares.Idea: Create useful wing space while keeping the central structure flexible.

Named variations

Each line below is an indexed entry under Sodium Attack. Open one to load it on the board and keep exploring from that position.

Openings from the same volume

ECO groups openings by the structures they lead to, so these families tend to share plans with the Sodium Attack.