Modern Defense
A41 1. d4 g6 2. c4 Bg7 3. Nc3 d6
White scores 52.1% here across 436 club games — but the 6.0% who answer e3 score 44.2%, 8 points worse.
What White actually plays here
Across 436 games from a Lichess-derived book of club play, White scores 52.1% in this position. These are the replies people choose, and how each one works out.
| Reply | Games | Share | White scores | Verdict |
|---|---|---|---|---|
| e4 | 266 | 61.0% | 50.4% | holds up |
| Nf3 | 96 | 22.0% | 57.8% | holds up |
| e3 | 26 | 6.0% | 44.2% | 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.