Opening Leak Lab

Sicilian Defense: Closed

B23 1. e4 c5 2. Nc3 e6 3. g3

Black scores 50.1% here across 988 club games — but the 5.0% who answer g6 score 31.6%, 18 points worse.

What Black actually plays here

Across 988 games from a Lichess-derived book of club play, Black scores 50.1% in this position. These are the replies people choose, and how each one works out.

ReplyGamesShare Black scoresVerdict
Nc6 457 46.3% 53.2% holds up
d6 215 21.8% 51.4% holds up
e6 188 19.0% 47.9% holds up
g6 49 5.0% 31.6% below the line
a6 29 2.9% 48.3% holds up
e5 28 2.8% 39.3% 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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