Ah this line with 10. Nh4, I remember that in an online blitz game, Suat Atalik played this against me. I think that I did 10...a5 and he doubled my pawns. It looks to me that White wants to play a Catalan structure where Bxc6 destroys the queenside pawn structure, but the difference is that here in Grünfeld Black has the bishop on g7 pointing at d4, with aims of ...c5 or ...e5, and White generally cannot do d5 because it might be too weak. But I could look at this and see what can do for White.

I agree also, that playing Fianchetto against that ...c6/...d5 setup is very difficult to claim an edge. I know from experience because I played this with Black as well. But Grünfeld players generally want a dynamic position like the ...Nxd5 positions instead of a semi-closed slow symmetrical game. Even if you get barely a minimum of edge of Black equalises (latter is much more likely), opponent has to play the position, which I suppose that is a bit unpersonlike for the Grünfeld player playing this Slaw-like structure. Unless of course you play both the Grünfeld and Slaw like I do

This is one of the few lines where my White and Black repertoires clash, and Black seems to have better results here. But this line is very fresh, White has been trying looks like every legal move after 9...Re8. So who knows

I wonder what Pert recommends, if it is 10. Nh4. I personally think that 10. Re1 a5 is reaching the end of a try for an advantage for White, unless someone finds something weird and unexpected. I see too that Sandro Mareco beat David Navara with 10. Nh4, and Mareco is known for his deep opening preparation. The race for ideas continues

Also notice that he plays things like the Winawer Poisoned Pawn and Slaw with 7...Qc7 and 11...g5 but plays solidly with White. I thought that that was interesting because that seems similar to my style. But 9...Re8 in the knight takes Grünfeld is key. I have a <10% score as White in this line, both in tournaments and even practise blitz.

The new DVD by Nick Pert is out. It is about the Fianchetto against Grünfeld and KID. I did not know where to put this post because Grünfeld and KID are in different sections, but to me I have serious problems against the Grünfeld with the Fianchetto so I chose Grünfeld . 

If anyone has it, how is the coverage and lines, especially in the Grünfeld lines? I have tended to end up =+ as White in this line by move 16-20 because Black gets so much counterplay.