Vienna Game
C25 1. e4 e5 2. Nc3
Black scores 50.9% here across 1,323 club games — but the 4.8% who answer c6 score 43.8%, 7 points worse.
What Black actually plays here
Across 1,323 games from a Lichess-derived book of club play, Black scores 50.9% in this position. These are the replies people choose, and how each one works out.
| Reply | Games | Share | Black scores | Verdict |
|---|---|---|---|---|
| Nf6 | 417 | 31.5% | 51.0% | holds up |
| Nc6 | 392 | 29.6% | 53.8% | holds up |
| d6 | 171 | 12.9% | 48.0% | holds up |
| Bc5 | 135 | 10.2% | 53.0% | holds up |
| Bb4 | 67 | 5.1% | 48.5% | holds up |
| c6 | 64 | 4.8% | 43.8% | 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.