Philidor - Nimzovich - Sozin variation
1. e4 e5 2. Nf3 d6 3. d4 Nf6 4. Nc3 Nbd7 5. Bc4 Be7 6. O-O O-O 7. Qe2 c6 8. a4 exd4
White moves 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 moves the queen's pawn to d4. Black develops the knight to f6.
White moves the knight to c3. Black jumps the knight to d7. White develops the light-squared bishop to c4.
Black develops the dark-squared bishop to e7. White castles kingside. Black castles kingside.
White places the queen to e2. Black advances the c-pawn to c6. White moves the a-pawn to a4.
Black captures on d4 with the king's pawn.