Opening Leak Lab

Vienna Game: Stanley Variation, Three Knights Variation

C28 1. e4 e5 2. Nc3 Nc6 3. Bc4 Nf6

White scores 51.5% here across 1,092 club games, and no common reply does noticeably worse than the rest.

What White actually plays here

Across 1,092 games from a Lichess-derived book of club play, White scores 51.5% in this position. These are the replies people choose, and how each one works out.

ReplyGamesShare White scoresVerdict
d3 596 54.6% 51.3% holds up
Nf3 290 26.6% 49.1% holds up
f4 78 7.1% 64.1% holds up
a3 54 4.9% 51.9% holds up
Nge2 30 2.7% 50.0% holds up

"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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