Rapport-Jobava System, with e6
D01 1. d4 d5 2. Nc3 e6 3. Bf4
Black scores 48.0% here across 908 club games — but the 19.2% who answer Bd6 score 44.3%, 4 points worse.
What Black actually plays here
Across 908 games from a Lichess-derived book of club play, Black scores 48.0% in this position. These are the replies people choose, and how each one works out.
| Reply | Games | Share | Black scores | Verdict |
|---|---|---|---|---|
| Nf6 | 250 | 27.5% | 48.0% | holds up |
| Bd6 | 174 | 19.2% | 44.3% | below the line |
| c5 | 126 | 13.9% | 51.2% | holds up |
| a6 | 103 | 11.3% | 48.1% | holds up |
| Bb4 | 98 | 10.8% | 47.4% | holds up |
| c6 | 49 | 5.4% | 52.0% | holds up |
| Nc6 | 41 | 4.5% | 42.7% | 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.