Opening Leak Lab

English Opening: King's English Variation

A20 1. c4 e5

White scores 53.5% here across 1,415 club games — but the 9.0% who answer e4 score 41.7%, 12 points worse.

What White actually plays here

Across 1,415 games from a Lichess-derived book of club play, White scores 53.5% in this position. These are the replies people choose, and how each one works out.

ReplyGamesShare White scoresVerdict
Nc3 859 60.7% 55.7% holds up
b3 161 11.4% 61.5% holds up
e4 127 9.0% 41.7% below the line
g3 73 5.2% 58.2% holds up
e3 71 5.0% 52.8% holds up
d3 45 3.2% 41.1% 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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