Queen's Pawn Game: Mason Attack
D00 1. d4 d5 2. f4
Black scores 46.0% here across 577 club games — but the 22.9% who answer Nf6 score 42.8%, 3 points worse.
What Black actually plays here
Across 577 games from a Lichess-derived book of club play, Black scores 46.0% in this position. These are the replies people choose, and how each one works out.
| Reply | Games | Share | Black scores | Verdict |
|---|---|---|---|---|
| Nc6 | 139 | 24.1% | 51.8% | holds up |
| Nf6 | 132 | 22.9% | 42.8% | below the line |
| Bf5 | 106 | 18.4% | 39.6% | below the line |
| e6 | 88 | 15.3% | 48.3% | holds up |
| c5 | 42 | 7.3% | 47.6% | holds up |
| f5 | 26 | 4.5% | 59.6% | 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.