Alekhine Defense
B03 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4
Black scores 49.2% here across 725 club games — but the 4.7% who answer Nb6 score 44.1%, 5 points worse.
What Black actually plays here
Across 725 games from a Lichess-derived book of club play, Black scores 49.2% in this position. These are the replies people choose, and how each one works out.
| Reply | Games | Share | Black scores | Verdict |
|---|---|---|---|---|
| d6 | 482 | 66.5% | 50.1% | holds up |
| e6 | 92 | 12.7% | 50.5% | holds up |
| b5 | 49 | 6.8% | 59.2% | holds up |
| Nb6 | 34 | 4.7% | 44.1% | below the line |
| Nc6 | 28 | 3.9% | 42.9% | 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.