Opening Leak Lab

Italian Game: Giuoco Piano

C50 1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5

White scores 51.1% here across 1,907 club games — but the 25.9% who answer d3 score 48.1%, 3 points worse.

What White actually plays here

Across 1,907 games from a Lichess-derived book of club play, White scores 51.1% in this position. These are the replies people choose, and how each one works out.

ReplyGamesShare White scoresVerdict
c3 563 29.5% 53.9% holds up
d3 494 25.9% 48.1% below the line
O-O 346 18.1% 54.2% holds up
Nc3 318 16.7% 49.5% holds up
b4 93 4.9% 54.3% holds up
d4 28 1.5% 39.3% 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.

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