French Defense: Exchange Variation, Bogoljubow Variation

The French Defense: Exchange Variation, Bogoljubow Variation is a chess opening classified under ECO code C01 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 e6 2. d4 d5 3. exd5 exd5 4. Nc3 Nf6 5. Bg5 Nc6. The resulting position leaves white to move.