Philidor - Nimzovich variation
1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. dxe5
White plays the king's pawn to e4. Black plays the king's pawn to e5. White develops the knight to f3.
Black advances the queen's pawn to d6. White advances the queen's pawn to d4. Black develops the knight to f6.
White captures on e5 with the queen's pawn.