All Chess Positions Open the map

A02Opening

Bird Opening

1. f4

a8b7c6d5e4f3g2h1

Black to move

Legal moves
20
Games in the next 4 moves
198,473
Different positions among them
71,958
Named lines from here
29

See it on the mapOn the opening map

Named after the 19th-century English master Henry Bird. White claims e5 with the f-pawn and often reaches a Dutch Defence with colours reversed.

It is reached after a single move: 1. f4.

Black is to move and has 20 legal moves. Over the next four moves — two for each side — the game can branch into 198,473 different games. Those games reach 71,958 different positions: most positions can be reached in more than one way, 2.8 on average.

The Lichess opening list names 29 further lines after this position, such as From's Gambit (1... e5) and Dutch Variation (1... d5).

Map of every game of the next four moves after the Bird Opening
Every game of the next four moves from this position, as the map draws it. Each ring is one more move; the outer ring holds all 198,473 games.

Move by move

  1. 1. f4Bird Opening

Named lines from here

Famous games through this position

The Double Bishop SacrificeEm. Lasker – Bauer, Amsterdam 1889, move 1Lasker gives up both bishops, on h7 and g7, and strips Black's king bare.

Related openings

FEN

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