Ruy Lopez - Berlin defence - Mortimer variation
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. d3 Ne7
White advances the king's pawn to e4. Black plays the king's pawn to e5. White develops the knight to f3.
Black develops the knight to c6. White develops the light-squared bishop to b5. Black moves the knight to f6.
White plays the queen's pawn to d3. Black transfers the knight to e7.