Opening Leak Lab

Sicilian Defense: Dragon Variation

B70 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6

White scores 48.8% here across 534 club games — but the 10.9% who answer Bg5 score 43.1%, 6 points worse.

What White actually plays here

Across 534 games from a Lichess-derived book of club play, White scores 48.8% in this position. These are the replies people choose, and how each one works out.

ReplyGamesShare White scoresVerdict
Be3 201 37.6% 52.2% holds up
Bc4 83 15.5% 51.8% holds up
Bg5 58 10.9% 43.1% below the line
Be2 56 10.5% 50.9% holds up
f3 51 9.6% 35.3% below the line
Bd3 26 4.9% 48.1% 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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