Opening Leak Lab

Elephant Gambit: Paulsen Countergambit

C40 1. e4 e5 2. Nf3 d5 3. exd5 e4

White scores 48.3% here across 637 club games — but the 24.3% who answer Nd4 score 44.2%, 4 points worse.

What White actually plays here

Across 637 games from a Lichess-derived book of club play, White scores 48.3% in this position. These are the replies people choose, and how each one works out.

ReplyGamesShare White scoresVerdict
Qe2 254 39.9% 47.2% holds up
Nd4 155 24.3% 44.2% below the line
Ng1 139 21.8% 59.0% holds up
Ne5 54 8.5% 47.2% 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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