King's Pawn Game: McConnell Defense
C40 1. e4 e5 2. Nf3 Qf6
White scores 60.2% here across 674 club games — but the 16.8% who answer d4 score 56.6%, 4 points worse.
What White actually plays here
Across 674 games from a Lichess-derived book of club play, White scores 60.2% in this position. These are the replies people choose, and how each one works out.
| Reply | Games | Share | White scores | Verdict |
|---|---|---|---|---|
| Bc4 | 252 | 37.4% | 64.1% | holds up |
| Nc3 | 199 | 29.5% | 60.8% | holds up |
| d4 | 113 | 16.8% | 56.6% | below the line |
| d3 | 40 | 5.9% | 50.0% | 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.