Opening a new front on the queenside in order to exhaust the defence.

1...Bxb5 2.c6! Bxc6 3.Rxc6 bxc6 4.d7 , winning a piece and the game.

Now the threat of 4 Ra7 puts an end to Black's resistance.

Exploiting the temporary absence of the black queen, White creates a mating net. In view of 6 Qf6+, Black resigned.

Intending b4-b5 to open a new front on the queenside.

1...a6 seems preferable, avoiding a weakness on a7, although after 2.a4 Rd6 3.b5 a5 4.Bg4 Rf7 5.Rc1! Bd7 6.Qa3! Qe7 7.Rc7 White keeps strong pressure.

In view of the mating net, Black resigned.

Preparing h4-h5 with a new kingside front.