Opening Leak Lab

Queen's Gambit Accepted: Old Variation

D20 1. d4 d5 2. c4 dxc4 3. e3

Black scores 41.7% here across 598 club games — but the 34.1% who answer b5 score 34.1%, 8 points worse.

What Black actually plays here

Across 598 games from a Lichess-derived book of club play, Black scores 41.7% in this position. These are the replies people choose, and how each one works out.

ReplyGamesShare Black scoresVerdict
b5 204 34.1% 34.1% below the line
Nf6 95 15.9% 45.8% holds up
e6 85 14.2% 42.4% holds up
Be6 41 6.9% 53.7% holds up
e5 36 6.0% 55.6% holds up
Bf5 34 5.7% 44.1% holds up
Nc6 29 4.8% 48.3% 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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