1.e4 e5 2.d4

2...exd4 3.c3 (Key Position Of Danish Gambit ) 3.. .d3 (After playing 3....dxc3 white plays either 4.Nxc3 which is called Goring Gambit or 4.Bc4!? cxb2 5.Bxb2 white gets sufficient compensation by sacrificing two pawns. White’s strong centre, very active Double Bishops that threats against f7 and g7 and better development of the pieces  forces  black to defend very carefully).                                                
Danish Gambit
1.e4 e5 2.d4 exd4 3.c3 dxc3 4.Bc4 cxb2 5.Bxb2 d5 6.Bxd5 Nf6 7.Bxf7+ Kxf7 8.Qxd8 Bb4+9.Qd2 Bxd2+ 10.Nxd2 Re8 11.Ngf3 Nc6 12.0-0 Kg6 13.e5 Nd5 14.Rfd1 Bg4 15.h3=
Centre Game
1.e4 e5 2.d4 exd4 3.Qxd4 Nc6 4.Qe3 Nf6 5.Nc3 Be7{5...Bb46.Bd2 0-0 7.0-0-0 Re8 8.Qg3 Nxe4 (8...Rxe4 9.Nxe4 Nxe4+) 9.Nxe4 Rxe4 10.c3 Bc5 11.Bd3 Ra4 12.Bg5 Be7 13.Nf3 d6 14.Rde1 Rg4+} 6.Bc4 (6.Nf3 d5 7.Bb5 0-0 8.Bxc6 bxc6 9.0-0 dxe4 10.Nxe4 Bf5+) 6...0-0 7.Nf3 Re8 8.0-0 Bb4 9.Qd3
Bxc3 10.bxc3 Nxe4=