Opening Leak Lab

Pirc Defense: Classical Variation

B08 1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Nf3 Bg7

White scores 51.7% here across 1,322 club games — but the 13.2% who answer Bg5 score 48.3%, 3 points worse.

What White actually plays here

Across 1,322 games from a Lichess-derived book of club play, White scores 51.7% in this position. These are the replies people choose, and how each one works out.

ReplyGamesShare White scoresVerdict
Bc4 268 20.3% 51.1% holds up
Bd3 234 17.7% 51.7% holds up
Be3 210 15.9% 56.7% holds up
Bg5 174 13.2% 48.3% below the line
e5 127 9.6% 48.4% below the line
h3 86 6.5% 45.9% below the line
Be2 79 6.0% 58.2% holds up
Bf4 62 4.7% 54.0% holds up
d5 26 2.0% 48.1% 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.

Analyse my games