Ponziani Opening: Spanish Variation, Harrwitz Attack, Nikitin Gambit

The Ponziani Opening: Spanish Variation, Harrwitz Attack, Nikitin Gambit 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 6 moves: 1. e4 e5 2. Nf3 Nc6 3. c3 d5 4. Bb5 dxe4 5. Nxe5 Qd5 6. Qa4. The resulting position leaves black to move.