This is the position after 29...Rc1-c6 in the game Aldama-Akobian.

White's rook is active on the 7th rank, but he's down a pawn and that pawn is ready to roll. Black's last move defangs Ra7, now powerfully met by ...Ra6, so White must either crawl into a defensive shell to stop the a-pawn, or else find some way to make a kingside counterattack work.
But how? Suppose White plays the obvious 30.Ng5. Black can simply ignore the threat: 30...a4 31.Nxf7 a3 and now what?
So how did IM Degurnay Aldama pull off a draw against his young GM rival, Varuzhan Akobian? I heartily recommend trying to work this out on your own, and when you're ready to confirm (or see, if you haven't worked it out) the solution, click here.