Opening Leak Lab

Nimzo-Larsen Attack: Modern Variation

A01 1. b3 e5 2. Bb2 Nc6 3. c4 Nf6

White scores 51.4% here across 901 club games, and no common reply does noticeably worse than the rest.

What White actually plays here

Across 901 games from a Lichess-derived book of club play, White scores 51.4% in this position. These are the replies people choose, and how each one works out.

ReplyGamesShare White scoresVerdict
e3 475 52.7% 50.6% holds up
g3 177 19.6% 51.7% holds up
Nf3 86 9.5% 54.7% holds up
d3 44 4.9% 59.1% holds up
e4 35 3.9% 51.4% holds up
Nc3 28 3.1% 57.1% 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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