Zukertort Opening
A05 1. Nf3 Nf6 2. Nc3 Nc6
White scores 48.0% here across 505 club games — but the 6.7% who answer Nc3 score 29.4%, 19 points worse.
What White actually plays here
Across 505 games from a Lichess-derived book of club play, White scores 48.0% in this position. These are the replies people choose, and how each one works out.
| Reply | Games | Share | White scores | Verdict |
|---|---|---|---|---|
| d4 | 180 | 35.6% | 49.4% | holds up |
| g3 | 170 | 33.7% | 52.1% | holds up |
| c4 | 90 | 17.8% | 49.4% | holds up |
| Nc3 | 34 | 6.7% | 29.4% | 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.