Center Game: Paulsen Attack Variation

The Center Game: Paulsen Attack Variation is a chess opening classified under ECO code C22 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 4 moves: 1. e4 e5 2. d4 exd4 3. Qxd4 Nc6 4. Qe3. The resulting position leaves black to move.