Opening Leak Lab

English Opening: King's English Variation, Reversed Closed Sicilian

A25 1. c4 e5 2. Nc3 Nf6 3. g3 Bb4 4. e4 O-O 5. Nge2 Nc6 6. Bg2

White scores 54.9% here across 479 club games — but the 13.4% who answer e3 score 50.8%, 4 points worse.

What White actually plays here

Across 479 games from a Lichess-derived book of club play, White scores 54.9% in this position. These are the replies people choose, and how each one works out.

ReplyGamesShare White scoresVerdict
g3 188 39.2% 63.8% holds up
Nf3 123 25.7% 52.4% holds up
e3 64 13.4% 50.8% below the line
d3 47 9.8% 42.6% below the line
e4 44 9.2% 42.0% 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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