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French DefenseLa Bourdonnais Variation

C00For BlackSolid

1. e4 e6 2. f4

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

Win rate, Black
49.9%48.8%47.8%47.9%
Band 600, n = 3,301Band 1000, n = 20,089Band 1400, n = 27,820Band 1800, n = 79,980
Blunder rate
58.3%40.4%32.0%39.4%
Band median 44.6%Band median 42.9%Band median 40.0%Band median 36.4%
Tier
CCBC
Black, band 600Black, band 1000Black, band 1400Black, band 1800
Share of games
0.1%0.1%0.3%0.4%
Of band 600 gamesOf band 1000 gamesOf band 1400 gamesOf band 1800 games
Every band, source period 2026-05
BandWhiteDrawBlackBlunderBook exitGamesTier
60045.7%4.4%49.9%58.3%ply 3.03,301C
100048.3%2.9%48.8%40.4%ply 3.020,089C
140049.3%2.9%47.8%32.0%ply 3.027,820B
180048.3%3.9%47.9%39.4%ply 3.079,980C

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 bandC at 600Blunder rate 58.3%, band median 44.6%

At 600, the French Defense: La Bourdonnais Variation scores 49.9% for Black across 3,301 games. That is below average at this level. Games in this line leave known theory around move 2 on average, and 58.3% include an early material blunder (12 games at 600).

1000Your bandC at 1000Blunder rate 40.4%, band median 42.9%

At 1000, the French Defense: La Bourdonnais Variation scores 48.8% for Black across 20,089 games. That is below average at this level. Games in this line leave known theory around move 2 on average, and 40.4% include an early material blunder (52 games at 1000).

1400Your bandB at 1400Blunder rate 32.0%, band median 40.0%

At 1400, the French Defense: La Bourdonnais Variation scores 47.8% for Black across 27,820 games. That is close to the average at this level. Games in this line leave known theory around move 2 on average, and 32.0% include an early material blunder (50 games at 1400).

1800Your bandC at 1800Blunder rate 39.4%, band median 36.4%

At 1800, the French Defense: La Bourdonnais Variation scores 47.9% for Black across 79,980 games. That is below average at this level. Games in this line leave known theory around move 2 on average, and 39.4% include an early material blunder (142 games at 1800).

Questions

Common questions about this page.

At 600, the French Defense: La Bourdonnais Variation scores 49.9% for Black across 3,301 games. That is below average at this level. Games in this line leave known theory around move 2 on average, and 58.3% include an early material blunder (12 games at 600).

At 1000, the French Defense: La Bourdonnais Variation scores 48.8% for Black across 20,089 games. That is below average at this level. Games in this line leave known theory around move 2 on average, and 40.4% include an early material blunder (52 games at 1000).

The French Defense: La Bourdonnais Variation (C00) is a line for Black. The main line runs 1. e4 e6 2. f4.