Softening up the long diagonal for a future battery.

After 2...cxd5 3.Qd4 mate is inevitable, so Black has to give up a piece.

Keeping the queens in view of Black's exposed king.

With 6 Ra7 coming up, White has a decisive advantage.

Heading for h4 to enhance an attack on the white king.

1...Nf6!? 2.Bxf6 Rxf6 3.Bd3 f4 =/+

2.Nd2! , heading for f3, seems preferable, when 2...Qh4 3.Nf3 Qg3 4.Bd3 Rce8 keeps the initiative.

4.Nxd6? Ng4! 5.Nxc8 Qg3 -+

With a sound extra pawn and preserved attacking chances, Black is clearly better.