Petrov's Defense: Stafford Gambit Accepted
C42 1. e4 e5 2. Nf3 Nf6 3. Nxe5 Nc6 4. Nxc6 dxc6 5. d3 Bc5
White scores 45.1% here across 596 club games — but the 29.5% who answer Nc3 score 40.9%, 4 points worse.
What White actually plays here
Across 596 games from a Lichess-derived book of club play, White scores 45.1% in this position. These are the replies people choose, and how each one works out.
| Reply | Games | Share | White scores | Verdict |
|---|---|---|---|---|
| d3 | 224 | 37.6% | 45.5% | holds up |
| Nc3 | 176 | 29.5% | 40.9% | below the line |
| e5 | 115 | 19.3% | 53.9% | 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.