Modern Defense: Two Knights Variation
B06 1. e4 g6 2. d4 Bg7 3. Nc3 d6 4. Nf3
Black scores 48.5% here across 724 club games — but the 9.1% who answer Nd7 score 43.2%, 5 points worse.
What Black actually plays here
Across 724 games from a Lichess-derived book of club play, Black scores 48.5% in this position. These are the replies people choose, and how each one works out.
| Reply | Games | Share | Black scores | Verdict |
|---|---|---|---|---|
| Nf6 | 306 | 42.3% | 51.1% | holds up |
| Bg4 | 89 | 12.3% | 53.9% | holds up |
| Nc6 | 74 | 10.2% | 52.7% | holds up |
| Nd7 | 66 | 9.1% | 43.2% | below the line |
| a6 | 56 | 7.7% | 45.5% | below the line |
| c6 | 45 | 6.2% | 56.7% | holds up |
| e6 | 37 | 5.1% | 33.8% | 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.