Slav Defense
D10 1. d4 d5 2. c4 c6 3. Nc3 dxc4
White scores 56.4% here across 2,036 club games — but the 5.1% who answer c5 score 41.7%, 15 points worse.
What White actually plays here
Across 2,036 games from a Lichess-derived book of club play, White scores 56.4% in this position. These are the replies people choose, and how each one works out.
| Reply | Games | Share | White scores | Verdict |
|---|---|---|---|---|
| Nc3 | 977 | 48.0% | 58.0% | holds up |
| e3 | 355 | 17.4% | 54.2% | holds up |
| Nf3 | 293 | 14.4% | 60.6% | holds up |
| cxd5 | 187 | 9.2% | 56.1% | holds up |
| c5 | 103 | 5.1% | 41.7% | below the line |
| Bf4 | 29 | 1.4% | 48.3% | below the line |
| a3 | 29 | 1.4% | 46.6% | below the line |
| h3 | 27 | 1.3% | 51.9% | 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.