Flank openings

Bird Opening

1.f4

The Bird Opening starts with 1.f4 and is catalogued under ECO A02, in the flank openings half of the book. The catalog indexes 28 lines inside it, grouped into 27 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
Bird 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.f4

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

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

  2. 1…Nf6

    Develops the knight to f6, bringing it into the game.

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

  3. 2.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.

Book continuations

Waiting for Lichess game popularity.

1 move
g6Bird Opening1 named line · Bird Opening: Batavo-Polish AttackAdvances the g-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 Bird Opening. Open one to load it on the board and keep exploring from that position.

3 more named lines sit inside this family — the tree above walks all of them.

Openings from the same volume

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