Réti Opening
A09 1. Nf3 d5 2. c4
Black scores 44.4% here across 758 club games — but the 10.3% who answer Nf6 score 35.9%, 8 points worse.
What Black actually plays here
Across 758 games from a Lichess-derived book of club play, Black scores 44.4% in this position. These are the replies people choose, and how each one works out.
| Reply | Games | Share | Black scores | Verdict |
|---|---|---|---|---|
| dxc4 | 227 | 29.9% | 43.4% | holds up |
| d4 | 159 | 21.0% | 45.0% | holds up |
| c6 | 122 | 16.1% | 54.5% | holds up |
| e6 | 121 | 16.0% | 43.0% | holds up |
| Nf6 | 78 | 10.3% | 35.9% | 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.