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Grob Opening

A00For White

1. g4

A line for White. Every figure below is computed separately for each rating band, and every one carries its own sample size.

Win rate, White
40.4%47.6%48.8%51.2%
Band 600, n = 16,876Band 1000, n = 41,936Band 1400, n = 31,516Band 1800, n = 65,755
Blunder rate
42.3%38.6%34.3%26.1%
Band median 44.6%Band median 42.9%Band median 40.0%Band median 36.4%
Tier
DCBB
White, band 600White, band 1000White, band 1400White, band 1800
Share of games
0.4%0.3%0.3%0.3%
Of band 600 gamesOf band 1000 gamesOf band 1400 gamesOf band 1800 games
Every band, source period 2026-05
BandWhiteDrawBlackBlunderBook exitGamesTier
60040.4%7.3%52.4%42.3%ply 1.016,876D
100047.6%3.8%48.6%38.6%ply 1.041,936C
140048.8%3.4%47.8%34.3%ply 1.031,516B
180051.2%3.6%45.2%26.1%ply 1.065,755B

Results by band

What it actually does, band by band.

All four bands are on the page. The one matching your rating is marked. Nothing here is averaged across bands.

600Your bandD at 600Blunder rate 42.3%, band median 44.6%

At 600, the Grob Opening scores 40.4% for White across 16,876 games. Most openings score better than this at this level. Games in this line leave known theory around move 1 on average, and 42.3% include an early material blunder (26 games at 600).

1000Your bandC at 1000Blunder rate 38.6%, band median 42.9%

At 1000, the Grob Opening scores 47.6% for White across 41,936 games. That is below average at this level. Games in this line leave known theory around move 1 on average, and 38.6% include an early material blunder (101 games at 1000).

1400Your bandB at 1400Blunder rate 34.3%, band median 40.0%

At 1400, the Grob Opening scores 48.8% for White across 31,516 games. That is close to the average at this level. Games in this line leave known theory around move 1 on average, and 34.3% include an early material blunder (73 games at 1400).

1800Your bandB at 1800Blunder rate 26.1%, band median 36.4%

At 1800, the Grob Opening scores 51.2% for White across 65,755 games. That is close to the average at this level. Games in this line leave known theory around move 1 on average, and 26.1% include an early material blunder (134 games at 1800).

Questions

Common questions about this page.

At 600, the Grob Opening scores 40.4% for White across 16,876 games. Most openings score better than this at this level. Games in this line leave known theory around move 1 on average, and 42.3% include an early material blunder (26 games at 600).

At 1000, the Grob Opening scores 47.6% for White across 41,936 games. That is below average at this level. Games in this line leave known theory around move 1 on average, and 38.6% include an early material blunder (101 games at 1000).

The Grob Opening (A00) is a line for White. The main line runs 1. g4.