Does anyone have experience with Boris Avrukh's Opening repertoires on his Website in general, specifically the "QGD repertoire for Black"?
I am thinking of buying one of Boris Avrukh's courses on his website, The "QGD repertoire for Black". I was wondering if anyone has bought these repertoires from his website before.
I wanted to know if he is one of those authors that gives in-depth analysis and covers plans ideas etc with plenty of annotations, or is he one of those authors that just dumps a bunch of engine lines without little analysis? The course is quite expensive (40 dollars) so I'm interested to know that before I purchase it, as I don't think he offers refunds. There is also no way to really know what his exact repertoire recommendations are. I know he's a very famous theoretician, but knowing his writing style and depth of analysis is important to me before I purchase this.
Also, has anyone bought this actual course "QGD repertoire for black" and does anyone have a review of it, and can share what lines he gives against the mainlines of the exchange QGD?
thank you