Complex sentence: Kxf7 7.Nxe5 +, has been played which drives the black king out, but with accurate play, Black is supposed to be able to consolidate his extra piece.
Split into simpler sentences: Kxf7 7.Nxe5 +, which drives the black king out, has been played. However, with accurate play, Black is supposed to be able to consolidate his extra piece.