Ponziani Opening: Jaenisch Counterattack

The Ponziani Opening: Jaenisch Counterattack is a chess opening classified under ECO code C44 in the Open Games & French Defense family, beginning with 1.e4 e5 or 1.e4 e6, including the Italian Game, Ruy Lopez, and French Defense. It is reached after 5 moves: 1. e4 e5 2. Nf3 Nc6 3. c3 Nf6 4. d3 d5 5. Nbd2. The resulting position leaves black to move.