Opening Leak Lab

Scandinavian Defense: Mieses-Kotroc Variation

B01 1. e4 d5 2. exd5 Qxd5

White scores 59.8% here across 4,012 club games — but the 1.5% who answer Qf3 score 53.4%, 6 points worse.

What White actually plays here

Across 4,012 games from a Lichess-derived book of club play, White scores 59.8% in this position. These are the replies people choose, and how each one works out.

ReplyGamesShare White scoresVerdict
Nc3 3,062 76.3% 60.4% holds up
Nf3 392 9.8% 57.8% holds up
d4 335 8.3% 57.8% holds up
c4 93 2.3% 61.8% holds up
Qf3 59 1.5% 53.4% below the line
d3 40 1.0% 60.0% 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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