Sicilian Defense: Kan Variation
B41 1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 a6
White scores 47.5% here across 691 club games — but the 4.9% who answer Bc4 score 35.3%, 12 points worse.
What White actually plays here
Across 691 games from a Lichess-derived book of club play, White scores 47.5% in this position. These are the replies people choose, and how each one works out.
| Reply | Games | Share | White scores | Verdict |
|---|---|---|---|---|
| Nc3 | 337 | 48.8% | 47.9% | holds up |
| c4 | 118 | 17.1% | 48.3% | holds up |
| Bd3 | 80 | 11.6% | 46.9% | holds up |
| Be3 | 35 | 5.1% | 51.4% | holds up |
| Bc4 | 34 | 4.9% | 35.3% | below the line |
| Be2 | 25 | 3.6% | 48.0% | 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.