English Opening: Agincourt Defense
A13 1. c4 e6 2. Nf3 d5 3. b3 Nf6 4. Bb2 Be7 5. e3 O-O 6. d4
White scores 52.7% here across 1,541 club games — but the 6.5% who answer e3 score 42.5%, 10 points worse.
What White actually plays here
Across 1,541 games from a Lichess-derived book of club play, White scores 52.7% in this position. These are the replies people choose, and how each one works out.
| Reply | Games | Share | White scores | Verdict |
|---|---|---|---|---|
| Nc3 | 758 | 49.2% | 53.8% | holds up |
| g3 | 239 | 15.5% | 52.7% | holds up |
| d4 | 172 | 11.2% | 54.9% | holds up |
| Nf3 | 123 | 8.0% | 54.1% | holds up |
| e3 | 100 | 6.5% | 42.5% | below the line |
| e4 | 73 | 4.7% | 58.2% | holds up |
| d3 | 33 | 2.1% | 48.5% | below the line |
| b3 | 29 | 1.9% | 36.2% | 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.