Heading for a7 in order to seize the g1-a7 diagonal, where there is no opposing white bishop.

Or 4.cxd5 Ne5 5.Qd2 f5! with counterplay

Black is completely winning.

Preparing 2...Rh8 to fight for the h-file.

3.Rxh8 Qxh8 and the queen takes command of both the h-file and the a1-h8 diagonal.

Now Black enjoys a pleasant initiative.

With the centre safely blocked, this is the simplest way of securing the king and connecting the major pieces.

Thanks to his clever first move White can transfer the queen immediately into the attack.

Black had run out of sensible moves, and now there follows a decisive blow.