Opening Leak Lab

French Defense: Normal Variation

C00 1. e4 e6 2. d4

Black scores 48.5% here across 5,392 club games — but the 9.5% who answer c5 score 44.2%, 4 points worse.

What Black actually plays here

Across 5,392 games from a Lichess-derived book of club play, Black scores 48.5% in this position. These are the replies people choose, and how each one works out.

ReplyGamesShare Black scoresVerdict
d5 3,324 61.6% 54.2% holds up
c5 510 9.5% 44.2% below the line
d6 349 6.5% 36.0% below the line
b6 274 5.1% 42.0% below the line
c6 157 2.9% 46.2% holds up
Nf6 144 2.7% 36.1% below the line
Ne7 140 2.6% 51.4% holds up
Nc6 96 1.8% 31.8% below the line
Qh4 86 1.6% 23.3% below the line
Be7 76 1.4% 36.2% below the line
g6 49 0.9% 24.5% below the line
Bb4+ 48 0.9% 35.4% 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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