London System, with Be2 is a chess opening with the ECO code A48. It goes 1. d4 Nf6 2. Nf3 g6 3. Bf4 Bg7 4. e3 d6 5. Be2 O-O. White opens with 1. d4 (the queen's pawn) and Black answers 1... Nf6. After 10 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.
The moves
1. d4 – White plays the pawn to d4
1... Nf6 – Black plays the knight to f6
2. Nf3 – White plays the knight to f3
2... g6 – Black plays the pawn to g6
3. Bf4 – White plays the bishop to f4
3... Bg7 – Black plays the bishop to g7
4. e3 – White plays the pawn to e3
4... d6 – Black plays the pawn to d6
5. Be2 – White plays the bishop to e2
5... O-O – Black castles kingside
In chessGM's opening book this position continues with 6. h3.
chessGM