Opening Leak Lab

Scotch Game

C45 1. e4 e5 2. Nf3 Nc6 3. d4 exd4 4. Nxd4 Qh4 5. Nb5 Bb4+ 6. Bd2

Black scores 52.0% here across 1,800 club games — but the 41.6% who answer Nxd4 score 47.1%, 5 points worse.

What Black actually plays here

Across 1,800 games from a Lichess-derived book of club play, Black scores 52.0% in this position. These are the replies people choose, and how each one works out.

ReplyGamesShare Black scoresVerdict
Nxd4 749 41.6% 47.1% below the line
Bc5 449 24.9% 54.5% holds up
Nf6 197 10.9% 61.2% holds up
d6 80 4.4% 47.5% below the line
Qf6 73 4.1% 51.4% holds up
Nge7 67 3.7% 56.0% holds up
Ne5 47 2.6% 40.4% below the line
d5 29 1.6% 60.3% holds up
Qh4 26 1.4% 55.8% holds up
Bb4+ 26 1.4% 61.5% 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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