Alekhine Defense: Normal Variation is a chess opening with the ECO code B02, part of the Alekhine Defense family. It goes 1. e4 Nf6 2. e5 Nd5. White opens with 1. e4 (the king's pawn) and Black answers 1... Nf6. After 4 moves it is White to move. The lesson on the board explains every move of the line and lets you play it yourself; it is free.
In chessGM's opening book this position continues with 3. d4.
Black answers 1.e4 with 1...Nf6, inviting White's pawns to chase the knight. The idea is to make White over-extend, then attack the big centre.