Opening Leak Lab

French Defense

C00 1. e4 e6 2. d4 d5

White scores 49.7% here across 9,709 club games — but the 4.2% who answer e5 score 38.7%, 11 points worse.

What White actually plays here

Across 9,709 games from a Lichess-derived book of club play, White scores 49.7% in this position. These are the replies people choose, and how each one works out.

ReplyGamesShare White scoresVerdict
d4 4,548 46.8% 51.8% holds up
Nf3 2,769 28.5% 49.9% holds up
f4 494 5.1% 48.7% holds up
Bc4 440 4.5% 47.4% holds up
e5 410 4.2% 38.7% below the line
Nc3 296 3.0% 50.2% holds up
d3 231 2.4% 36.8% below the line
c4 169 1.7% 53.8% holds up
b3 81 0.8% 49.4% holds up
Qf3 61 0.6% 51.6% holds up
a3 34 0.4% 35.3% below the line
g3 33 0.3% 37.9% below the line

"Below the line" means the reply scores at least three points worse than the position does overall. Replies played fewer than 25 times are left out: the sample is too small to read.

Is this costing you anything?

A table of averages cannot tell you whether you go wrong here — only your own games can. Opening Leak Lab reads your Chess.com or Lichess archive, finds the decisions you repeat, and checks each one against this book and a bundled Stockfish.

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