Bird Opening: Dutch Variation
A03 1. f4 d5
White scores 56.7% here across 511 club games — but the 14.7% who answer d4 score 53.3%, 3 points worse.
What White actually plays here
Across 511 games from a Lichess-derived book of club play, White scores 56.7% in this position. These are the replies people choose, and how each one works out.
| Reply | Games | Share | White scores | Verdict |
|---|---|---|---|---|
| Nf3 | 354 | 69.3% | 57.1% | holds up |
| d4 | 75 | 14.7% | 53.3% | below the line |
| e3 | 54 | 10.6% | 61.1% | 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.