Flank openings

Grob Opening

1.g4

The Grob Opening starts with 1.g4 and is catalogued under ECO A00, in the flank openings half of the book. The catalog indexes 20 lines inside it, grouped into 20 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
Grob 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.g4

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

    Idea: Prepare a fianchetto or discourage the opponent’s expansion on that wing.

  2. 1…d5

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

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

  3. 2.h3

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

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

Book continuations

Waiting for Lichess game popularity.

1 move
e5Grob Opening2 named lines · Grob Opening: Keene Defense · Grob Opening: Keene Defense, Main LineAdvances to e5 to claim central space and control nearby key squares.Idea: Give the pieces room to develop behind a durable central foothold.

Named variations

Each line below is an indexed entry under Grob 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 Grob Opening.