So what does he go with against 6...Bg4?  I recall that one of the various old possibilities, 7. Be3 Nc6 8. d5, was claimed to lead to an edge quite some years ago.

Hi.

MNb wrote on 10/18/19 at 14:12:20:

I really wouldn't know as nothing 6...e6 is covered.

MNb wrote on 10/18/19 at 14:12:20:

Indeed.

Have a nice day.

Hi.

I just watched parts of GM Hammer's video series on 1.e4 for Chess24. Worth a look if you want some decent line to play that is not terribly hard to understand.

He actually recommends one of my favourite lines against the Modern:
1.e4 g6 2.d4 d6 3.Nf3 Bg7 4.Be2
And the Classical system against the Pirc
1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3 Bg7 5.Be2
So prepare to face the classical more often. 

Unless of course you want to be a Modern player and deviate, even though this is not supposed to work well:
1.e4 g6 2.d4 d6 3.Nf3 Bg7 4.Be2
4...c5 5.c3 - Hammer 
4...Nd7 and I like 5.a4 but there should be other good moves. 
4...a6 and now it is a mystery to me why everyone concludes the line with 5.c4 += as 5...Bg4 at least gives black the chance to reach somewhat acceptable positions should he get to play Nc6 and e5. White therefore probably needs to think and it is not totally easy to find something clear. A problem is 4...a6 5.0-0 when 5...Nf6 6.Nc3 is a classical where black has played a6 before castling. I suppose there is also 4...a6 5.0-0 Nc6 6.d5 -kinda critical I guess- and now 6...Na7!? With a position where black would normally have a knight on f6. Probably there is not that much independent significance though.

Interstingly I didn't see anything on 6...a6 and 6...c6 coverage was a bit underwhelming; though apart from this it looks like Hammer found good ways to play as white.

Have a nice day.

Edit: Bolded some moves