Opening Leak Lab

French Defense: Knight Variation

C00 1. e4 e6 2. Nf3

Black scores 50.3% here across 2,823 club games — but the 5.7% who answer d6 score 47.2%, 3 points worse.

What Black actually plays here

Across 2,823 games from a Lichess-derived book of club play, Black scores 50.3% in this position. These are the replies people choose, and how each one works out.

ReplyGamesShare Black scoresVerdict
d5 1,605 56.9% 54.4% holds up
c5 281 10.0% 50.9% holds up
d6 160 5.7% 47.2% below the line
b6 159 5.6% 41.5% below the line
Nf6 118 4.2% 39.0% below the line
c6 101 3.6% 48.0% holds up
Nc6 91 3.2% 42.3% below the line
Ne7 76 2.7% 49.3% holds up
a6 45 1.6% 54.4% holds up
g6 38 1.3% 34.2% below the line
Be7 38 1.3% 30.3% 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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