Despite the opposite-coloured bishops, White has a significant advantage since his bishop is much stronger.
Parrying the threat of 7 Bxg6, but White's greater piece activity proves decisive anyway.
Quite an unnatural place for the king, but after 3.0-0 Nd4 4.Nxd4 cxd4 , followed by ...Nc6, the absence of the fianchettoed bishop leaves him rather unprotected on g1.