Sicilian Defense
B20 1. e4 c5
White scores 47.1% here across 18,812 club games — but the 16.8% who answer Bc4 score 41.9%, 5 points worse.
What White actually plays here
Across 18,812 games from a Lichess-derived book of club play, White scores 47.1% in this position. These are the replies people choose, and how each one works out.
| Reply | Games | Share | White scores | Verdict |
|---|---|---|---|---|
| Nf3 | 9,311 | 49.5% | 50.3% | holds up |
| Bc4 | 3,167 | 16.8% | 41.9% | below the line |
| d4 | 1,292 | 6.9% | 43.2% | below the line |
| Nc3 | 988 | 5.3% | 50.2% | holds up |
| f4 | 969 | 5.2% | 48.1% | holds up |
| c4 | 839 | 4.5% | 45.6% | holds up |
| c3 | 509 | 2.7% | 44.5% | holds up |
| d3 | 478 | 2.5% | 43.1% | below the line |
| b4 | 252 | 1.3% | 47.0% | holds up |
| Qh5 | 250 | 1.3% | 36.6% | below the line |
| g3 | 162 | 0.9% | 44.4% | holds up |
| b3 | 151 | 0.8% | 44.0% | 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.