Karpos Open 2013 Rd1,GM Hansen E(CAN)

Every Hansen game now deserves some level of scrutiny. Here Hansen gives a nice demonstration of

• The bishop pair
• Pressure on the whole board
• Choosing a favorable structure
• Small tactics

Here is his rd1 win in the recent Karpos Open.

Markovski,V (2042) - Hansen,Eric (2557) 
Sicilian 2.c3 Nf6[B22]
Karpos Open 2013 Skopje MKD (1.30), 09.03.2013

Position 1
Black has a nice game with the f-file and the bishop pair. How should black continue?

Black to Play

17.Nb3