Flank openings

Anderssen's Opening

1.a3

The Anderssen's Opening starts with 1.a3 and is catalogued under ECO A00, in the flank openings half of the book. The catalog indexes 2 lines inside it, grouped into 2 named variations, and the position after those moves has 2 playable continuations 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
Anderssen's Opening
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.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.

Book continuations

Waiting for Lichess game popularity.

2 moves
e5Anderssen's Opening3 named lines · Formation: Shy Attack · Formation: Hippopotamus AttackAdvances to e5 to claim central space and control nearby key squares.Idea: Give the pieces room to develop behind a durable central foothold.a5Anderssen's Opening1 named line · Anderssen's Opening: Polish GambitAdvances the a-pawn to gain queenside edge 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 Anderssen's Opening. 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 Anderssen's Opening.