Opening Leak Lab

English Opening: Symmetrical Variation, Two Knights Variation

A35 1. c4 c5 2. Nc3 Nc6

White scores 54.6% here across 452 club games — but the 13.5% who answer e3 score 48.4%, 6 points worse.

What White actually plays here

Across 452 games from a Lichess-derived book of club play, White scores 54.6% in this position. These are the replies people choose, and how each one works out.

ReplyGamesShare White scoresVerdict
g3 198 43.8% 51.8% holds up
Nf3 118 26.1% 56.8% holds up
e3 61 13.5% 48.4% below the line
e4 39 8.6% 56.4% holds up
d3 28 6.2% 76.8% holds up

"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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