Anderssen's Opening
A00 1. a3
Black scores 46.8% here across 439 club games — but the 37.8% who answer e5 score 43.4%, 3 points worse.
What Black actually plays here
Across 439 games from a Lichess-derived book of club play, Black scores 46.8% in this position. These are the replies people choose, and how each one works out.
| Reply | Games | Share | Black scores | Verdict |
|---|---|---|---|---|
| e5 | 166 | 37.8% | 43.4% | below the line |
| d5 | 107 | 24.4% | 44.9% | holds up |
| Nf6 | 35 | 8.0% | 47.1% | holds up |
| e6 | 29 | 6.6% | 55.2% | holds up |
| c5 | 28 | 6.4% | 48.2% | 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.
Related openings
- Van't Kruijs Opening A00
- Hungarian Opening A00
- Mieses Opening A00
- Polish Opening A00
- Van Geet Opening A00
- Grob Opening A00