MartinC wrote on 12/05/11 at 16:18:17:

I'm not saying white is winning after Bxg4, but in corr. games such moves can lead black too close to 1-0, imho.. 
Edit: In fact, I'll leave you to make your own analyses of this 11.g4!? (I already gave some hints in my first post - such as Nc3-e4 at some point and f2-f3 - g4-g3 - f3-f4 plan as well as 0-0-0 in some rare variations).. And I'm not saying that I saw everything in this position, too..

Hi all!
One of my recent correspondence games followed the Marin's Anti-Gruenfeld line as per Anthony Miles (2565) - Oscar Panno (2580), Hoogovens 1978:

And here as the first player I blindly followed my favourite chess books' writer Marin (who obviously blindly followed one of my favourite players of all time - It's only He, Tony Miles) and played 11. Bxg7..
No, it's not wrong!.. It's a good move following the white strategy to eliminate the mighty black bishop on g7 and playing Ra1-c1 next (instead of 0-0) to prevent Nb8-c6 (by Bxc6!), white is ready to fight for more than equality.. Which in correspondence chess is a difficult task as seen in Stanislav Kudela - Martin Pribyl, CSR-ch, corr. 1992..
But some little devils in me made me to check 11.g4!?(N) (instead of already played 11.Bxg7)...and what was my surprise when I started to analyze it!..  White has at least += in all the variations. The critical points in my analyses showed that after the obligatory 11....hxg4 12.h5 white has good prospects in all lines having dicovered that the N on c3 goes to e4 as soon as possible and the mighty g4-pawn doesn't obstruct the white knight after f2-f3, g4-g3, f3-f4! moves.. Thus white has some very unusual play for an edge on the kingside after a move g3-g4 which is not common for an English setup like this one. And what is more, the white king is completely safe in the centre or on the queenside (after 0-0-0 in some of the variations)..
I doubt that Miles could count in an OTB game all the variations I found in my home analyses after 11.g4!?.. But, I'm slightly disappointed by Marin that followed Miles as blindly as I did, too..
Just to say that after 11.Bxg7 Kxg7 the move g3-g4 is not good because black has some good defence after Re8-h8.. 
One lives and learns all the time!..