Philidor - Hanham - Krause variation
1. e4 e5 2. Nf3 d6 3. d4 Nd7 4. Bc4 c6 5. O-O
White moves the king's pawn to e4. Black pushes the king's pawn to e5. White develops the knight to f3.
Black advances the queen's pawn to d6. White plays the queen's pawn to d4. Black develops the knight to d7.
White develops the light-squared bishop to c4. Black moves the c-pawn to c6. White castles kingside.