Ruy Lopez - open Berlin defence - Showalter variation
1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O Nxe4 5. d4 Nd6 6. Ba4
White advances the king's pawn to e4. Black pushes 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 castles kingside. Black captures with the knight on e4. White pushes the queen's pawn to d4.
Black jumps the knight to d6. White moves the light-squared bishop to a4.