Queen's Gambit Declined
D30 1. d4 d5 2. c4 e6
White scores 54.6% here across 3,029 club games — but the 5.9% who answer a3 score 45.8%, 9 points worse.
What White actually plays here
Across 3,029 games from a Lichess-derived book of club play, White scores 54.6% in this position. These are the replies people choose, and how each one works out.
| Reply | Games | Share | White scores | Verdict |
|---|---|---|---|---|
| Nc3 | 1,451 | 47.9% | 54.9% | holds up |
| Nf3 | 484 | 16.0% | 59.9% | holds up |
| e3 | 483 | 15.9% | 52.2% | holds up |
| cxd5 | 208 | 6.9% | 52.6% | holds up |
| a3 | 179 | 5.9% | 45.8% | below the line |
| c5 | 140 | 4.6% | 50.4% | below the line |
| Bf4 | 37 | 1.2% | 66.2% | holds up |
| g3 | 35 | 1.2% | 74.3% | 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.