Clearing the e-file for the rook, in order to enhance an attack on Black's weakened kingside.

Black is urged to speed up his development.

If 1...fxe4 2,Nxe4 d5, then 3.Ng5! , followed by Bh3 with a strong attack.

Simple and strong. Now the rook controls a lot of important squares.

4...g5 5.Qh5! Nxd6 6.Bh3 Black is still in trouble.

Black resigned.

Blocking the d-file as a preparation for the doubling of rooks.

2.Nb1 Ne4! 3.Bh2 Rd7 with similar play. At this point 4.f3? fails to Be3.

Creating an outside passed pawn.