Philidor Defense: Albin-Blackburne Gambit

The Philidor Defense: Albin-Blackburne Gambit is a chess opening classified under ECO code C41 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. Nf3 d6 3. d4 Bg4 4. dxe5 Nd7. The resulting position leaves white to move.