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Scandinavian Defense: Portuguese Gambit is a chess opening that arises after 1.e4 d5 2.exd5 Nf6 3.d4 Bg4. It is classified B01 in the ECO system, and the position after these moves has white to move. The Scandinavian Defense challenges the e4 pawn immediately with 1...d5, leading after 2.exd5 Qxd5 3.Nc3 to a position where Black's queen must retreat but Black's structure is sound and the light-squared bishop is free.
Black loses a little time with the queen but gets a simple, clear position with no long-term weaknesses. Because there are far fewer branches than in the Sicilian or French, it is one of the least theory-heavy answers to 1.e4.
Players who want a reliable defence to 1.e4 with a small amount of theory to learn.
This line is a variation within the Scandinavian Defense family. The strategic ideas above describe the family as a whole; this particular line reaches them by the move order 1.e4 d5 2.exd5 Nf6 3.d4 Bg4.
Each of these is a named opening reached by playing on from 1.e4 d5 2.exd5 Nf6 3.d4 Bg4. Open any of them to load the position on the board.