Scandinavian Defense: Marshall Variation
B01 1. e4 d5 2. exd5 Nf6 3. d4 Nxd5
White scores 49.2% here across 428 club games — but the 7.5% who answer Bc4 score 40.6%, 9 points worse.
What White actually plays here
Across 428 games from a Lichess-derived book of club play, White scores 49.2% in this position. These are the replies people choose, and how each one works out.
| Reply | Games | Share | White scores | Verdict |
|---|---|---|---|---|
| c4 | 189 | 44.2% | 46.3% | holds up |
| Nf3 | 162 | 37.9% | 56.8% | holds up |
| Bc4 | 32 | 7.5% | 40.6% | 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.