Philidor - Larsen variation
1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 g6
White advances the king's pawn to e4. Black moves the king's pawn to e5. White develops the knight to f3.
Black advances the queen's pawn to d6. White pushes the queen's pawn to d4. Black captures on d4 with the king's pawn.
White captures with the knight on d4. Black advances the g-pawn to g6.