Rat Defense: Harmonist
B00 1. e4 d6 2. f4
Black scores 50.5% here across 501 club games — but the 7.0% who answer c6 score 42.9%, 8 points worse.
What Black actually plays here
Across 501 games from a Lichess-derived book of club play, Black scores 50.5% in this position. These are the replies people choose, and how each one works out.
| Reply | Games | Share | Black scores | Verdict |
|---|---|---|---|---|
| Nf6 | 233 | 46.5% | 53.2% | holds up |
| e5 | 66 | 13.2% | 49.2% | holds up |
| g6 | 59 | 11.8% | 51.7% | holds up |
| c6 | 35 | 7.0% | 42.9% | below the line |
| Nd7 | 29 | 5.8% | 48.3% | 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.