A00

Grob Opening

Play from here → Click pieces to play, or use ← / → arrows.

Overview

Grob Opening is one of the foundational chess openings, sitting at the root of an entire branch of theory under ECO code Flank Openings in the A00 group.

The Flank Openings group covers flank openings — systems that delay the central pawn break and instead develop pieces and pawns on the wings.

Play reaches this position via 1. g4, after 1 ply of opening development.

It is the root of 7 named variations, with Alessi Gambit, Double Grob, Grob Gambit, and others among the most studied.

In total, the branch covers 19 sub-variations across all depths.

Step through the moves on the interactive board below, review the live Lichess statistics, or play this position against Stockfish at one of six difficulty levels.

ECO code: A00
Group: Flank Openings (A)
Plies: 1
Direct variations: 7
Total in subtree: 19

This overview is generated automatically from the opening's metadata. Know this line well? Write a description — submissions are reviewed before publishing.

Statistics from Lichess

7,102,477 games · White 49.3% / Draw 3.9% / Black 46.8%

Moves	Games	W / D / B
d5	3,071,103
e5	1,446,200
c5	495,896
e6	445,770
g6	327,822
d6	325,432
c6	299,972
b6	171,652

Source: Lichess Opening Explorer · cached 2026-09-26 00:25:57

Write a description

Markdown supported (headings ###, bold, lists, links). Submissions are reviewed before publishing.

Variations (7)

Show all 19 sub-variations (full subtree)