Opening Leak Lab

Sicilian Defense: Classical Variation

B56 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6

White scores 48.2% here across 483 club games, and no common reply does noticeably worse than the rest.

What White actually plays here

Across 483 games from a Lichess-derived book of club play, White scores 48.2% in this position. These are the replies people choose, and how each one works out.

ReplyGamesShare White scoresVerdict
Bg5 100 20.7% 47.0% holds up
Be3 94 19.5% 47.9% holds up
Bc4 71 14.7% 50.0% holds up
Bb5 61 12.6% 46.7% holds up
Nxc6 51 10.6% 47.1% holds up
Be2 45 9.3% 56.7% holds up
f3 44 9.1% 47.7% 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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