Parrying the threat of 3 Nc5.

Now White wins a pawn. The last chance was 5...Rxc7 6.Rxc7 Re7.

With a decisive advantage.

Creating a protected square on f3 that can be exploited by the knight after the swap of bishops.

White has to take care of his d6-pawn.

Initiating favourable complications.

In this desperate position, White resigned.

Swapping the defenders of the d5-square in order to install the knight there.

2.Nd5? Bxd5 3.Bxd5 Rac8 followed by ...Bf6-g5.

The knight dominates the whole board and Black is left without counterplay.