Opening Leak Lab

Scandinavian Defense

B01 1. e4 d5 2. b3

White scores 55.1% here across 7,042 club games — but the 15.4% who answer e5 score 48.1%, 7 points worse.

What White actually plays here

Across 7,042 games from a Lichess-derived book of club play, White scores 55.1% in this position. These are the replies people choose, and how each one works out.

ReplyGamesShare White scoresVerdict
exd5 5,271 74.9% 57.6% holds up
e5 1,084 15.4% 48.1% below the line
Nc3 257 3.6% 51.6% below the line
Nf3 126 1.8% 56.3% holds up
d4 87 1.2% 54.6% holds up
d3 73 1.0% 37.7% below the line
f3 34 0.5% 27.9% 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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