Sicilian Defense
B27 1. e4 c5 2. Nf3
Black scores 49.7% here across 9,371 club games — but the 1.2% who answer b6 score 45.3%, 4 points worse.
What Black actually plays here
Across 9,371 games from a Lichess-derived book of club play, Black scores 49.7% in this position. These are the replies people choose, and how each one works out.
| Reply | Games | Share | Black scores | Verdict |
|---|---|---|---|---|
| Nc6 | 4,459 | 47.6% | 50.2% | holds up |
| d6 | 2,985 | 31.9% | 50.1% | holds up |
| e6 | 1,233 | 13.2% | 49.8% | holds up |
| g6 | 260 | 2.8% | 47.1% | holds up |
| a6 | 139 | 1.5% | 48.2% | holds up |
| b6 | 116 | 1.2% | 45.3% | below the line |
| Nf6 | 105 | 1.1% | 40.0% | below the line |
| d5 | 35 | 0.4% | 27.1% | 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.