Opening Leak Lab

Queen's Gambit Declined: Normal Defense

D35 1. d4 d5 2. c4 e6 3. Nc3 Nf6

White scores 53.7% here across 1,502 club games — but the 2.3% who answer c5 score 47.1%, 7 points worse.

What White actually plays here

Across 1,502 games from a Lichess-derived book of club play, White scores 53.7% in this position. These are the replies people choose, and how each one works out.

ReplyGamesShare White scoresVerdict
Bg5 571 38.0% 53.9% holds up
Nf3 504 33.6% 55.6% holds up
e3 146 9.7% 54.5% holds up
cxd5 122 8.1% 53.3% holds up
a3 50 3.3% 53.0% holds up
c5 34 2.3% 47.1% below the line
Bf4 31 2.1% 54.8% holds up
f3 28 1.9% 28.6% 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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