AJWZ wrote on 09/25/25 at 13:22:57:



i think both books serve different purposes:

Yaps book is a one stop shop. You get a full repertoire for black, not just the stonewall. This is clearly useful if you want to base everything on one book to limit the work you need to do and the sources you need to get.
But because it is a one stop shop, he a) can't go too deep, he has limited space for the repertoire and needs to prioritize which also means b) he doesn't necessarily choose the heaviest or best known lines but more practical ones. In Yaps case f.e. he goes for 3...a6 against the Tarrasch in the french part or 7...Ne4 before c6 and Qe7 against 7.b3 which are not the most common answers (and to be perfectly honest probably also not the theoretically 100% best answers), but they are very practical in a way that they go off the beaten tracks and probably get your opponent out of book. 

Sedlak on the other hand is imo the better base if you want to play the Stonewall longterm, on a higher level and you are willing to work on the opening. Of course you need to engine check every line and you will sooner or later find improvements to his lines (especially over time as we already talked about engine developments) but he offers an objectively better foundation. 

NoNoo wrote on 09/25/25 at 12:00:33:


Thank you. You're probably right: 5 years past from the post I was referring to. Theory changed, so maybe those past problems with Stonewall aren't problems today. But what's your general opinion of the book?

Thank you FreeRepublic I've just read about the French part of the book. I hope somebody who bought the book and has some knowledge will told us a thing or two about the Stonewall part of the book. 2 books in  1 big book is great, providing the contents are great

FreeRepublic wrote on 09/24/25 at 19:13:52:

As usual, niggemann.com is a good resource, sample pages here:
https://www.niggemann.com/en/complete-opening-repertoire-for-black-after-1-e6.ht...

Edited:

Hey! Delurking as I'm thinking of playing the Stonewall.
There is a new book partly on the Stonewall:
https://thinkerspublishing.com/product/a-complete-opening-repertoire-for-black-a...
Is it a good one? Are the lines chosen theoretically correct?
I read here: https://www.chesspub.com/cgi-bin/chess/YaBB.pl?num=1591883528/37 (reply 37) about some big problems with the opening. Does he address those issues?