Petrov's Defense: Italian Variation
C42 1. e4 e5 2. Nf3 Nf6 3. Bc4
Black scores 47.8% here across 738 club games — but the 11.4% who answer d6 score 39.9%, 8 points worse.
What Black actually plays here
Across 738 games from a Lichess-derived book of club play, Black scores 47.8% in this position. These are the replies people choose, and how each one works out.
| Reply | Games | Share | Black scores | Verdict |
|---|---|---|---|---|
| Nc6 | 208 | 28.2% | 51.7% | holds up |
| Nxe4 | 194 | 26.3% | 51.8% | holds up |
| d6 | 84 | 11.4% | 39.9% | below the line |
| Bc5 | 77 | 10.4% | 53.2% | holds up |
| h6 | 57 | 7.7% | 37.7% | below the line |
| d5 | 53 | 7.2% | 41.5% | below the line |
| c6 | 29 | 3.9% | 46.6% | 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.