Board Position
A projection (or sub-branch) of the Centre Game (qv.). White has good chances in practice despite the loss of two gambit pawns, due to the free development gained. Analysed by several Danish players in the 19th century.
White's aim is to gain a major lead in piece-development by drawing Black's KP towards the queen's side and away from the centre (move 3w, shown left). In doing so, he sacrifices two pawns but gains early total domination of two diagonals by setting adjacent bishops.
The opening is rare in tournaments however, as Black usually accepts the gambit and then by careful play soon regains equality (mainly using the later Schlechter Defence to ease his development). Alternatively Black can decline the gambit with the Sorensen Defence.

Begin Clear or Groups or see move: 1 e4 e5 2 d4 exd4 3 c3
Main (Accepted): 3..dxc3 4 Bc4 cxb2 5 Bxb2 d5! 6 Bxd5 Nf6 7 Bxf7+ Kxf7 8 Qxd8 Bb4+ 9 Qd2
Declined: (Sorensen): 3..d5 4 exd5 Nf6 5 Nf3 Nxd5 6 Qxd4 Nc6 7 Bb5 Be7 8 0-0 0-0 9 Bxc6 bxc6