The tabiya in question is 1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Be2 Nf6 6.Nc3 d6 7.0–0 Be7 8.a4 Nc6 9.Be3 0–0 10.f4 Qc7 11.Kh1 Re8(Diagram)

Here a recent effort(TWIC 950) from the just completed Tata Steel Group A tournament played by Harikrishna against Van Wely.

75th Tata Steel GpA Wijk aan Zee NED (5.7), 17.01.2013

Position 1
White has a massive buildup on the kingside and after 28.Nf4, the big threat is Nxh5 with devastation on the h-file to follow.

Black to Play

28.Nf4

Position 2
Both sides look like they are attacking each other but now white has the move. What do you suggest?

White to Play

38…Nxf7