The following game contains the following middlegame themes

• Weak pawns
• Weak light squares
• Play on open files

Hambleton,A (2348) – Priyadharshan,K (2407)
4.Qc2 Nimzo-Indian[E32]
Spice Cup Open Saint Louis USA (7), 18.10.2012
Black allowed weak pawns throughout his position and was punished in model fashion. In the diagrammed position black has been tied down on the c-file and has less space. The kingside is also looking vulnerable. How should white continue? What is the plan? Maybe there is a combination?

White to Play