Caro-Kann Defense
B10 1. e4 c6 2. Nc3 d5
White scores 48.3% here across 4,146 club games — but the 9.5% who answer Bc4 score 39.7%, 9 points worse.
What White actually plays here
Across 4,146 games from a Lichess-derived book of club play, White scores 48.3% in this position. These are the replies people choose, and how each one works out.
| Reply | Games | Share | White scores | Verdict |
|---|---|---|---|---|
| d4 | 1,819 | 43.9% | 50.4% | holds up |
| Nf3 | 1,185 | 28.6% | 47.5% | holds up |
| Bc4 | 395 | 9.5% | 39.7% | below the line |
| Nc3 | 229 | 5.5% | 56.6% | holds up |
| f4 | 211 | 5.1% | 45.7% | holds up |
| c4 | 91 | 2.2% | 55.5% | holds up |
| d3 | 76 | 1.8% | 43.4% | below the line |
| e5 | 52 | 1.3% | 49.0% | 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.