Opening Leak Lab

Center Game Accepted

C21 1. e4 e5 2. d4 exd4

White scores 51.9% here across 2,085 club games — but the 37.2% who answer Qxd4 score 38.9%, 13 points worse.

What White actually plays here

Across 2,085 games from a Lichess-derived book of club play, White scores 51.9% in this position. These are the replies people choose, and how each one works out.

ReplyGamesShare White scoresVerdict
c3 1,052 50.5% 60.1% holds up
Qxd4 776 37.2% 38.9% below the line
Nf3 206 9.9% 62.6% holds up
e5 31 1.5% 29.0% 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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