Opening Leak Lab

Vienna Game: Falkbeer Variation

C26 1. e4 e5 2. Nc3 Nf6

White scores 49.4% here across 573 club games — but the 41.9% who answer Nf3 score 45.0%, 4 points worse.

What White actually plays here

Across 573 games from a Lichess-derived book of club play, White scores 49.4% in this position. These are the replies people choose, and how each one works out.

ReplyGamesShare White scoresVerdict
Nf3 240 41.9% 45.0% below the line
Bc4 124 21.6% 52.4% holds up
f4 114 19.9% 60.1% holds up
d3 37 6.5% 41.9% below the line
a3 28 4.9% 42.9% 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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