Alekhine's Defense: Scandinavian Variation

1.e4 Nf6 2.Nc3 d5 3.e5 d4 4.exf6 dxc3 5.fxg7 cxd2+ 6.Qxd2 Qxd2+ 7.Bxd2 Bxg7 8.O-O-O