Basel 2013 Rd3, GM Hansen,E(CAN)

Here is Hansen's tough rd3 game.

Hansen,Eric(2568)-Loetscher,Roland(2395)
Sicilian Bind[B36]
Hilton Open 2013 Basel (3.5), 02.01.2013

Position 1
(After 27...Rb8)
White is pressing but how to continue?

White to Play
(Sorry but I cannnot upload images to Blogger at the moment-Hopefully this is temporary)