Nickajack wrote on 07/13/19 at 05:05:21:
kylemeister wrote on 06/26/19 at 17:08:49:
Pantu wrote on 06/26/19 at 11:21:14:
The example given there is 1.c4 e6 2.g3 d5 3.Bg2 Nf6 4.Nf3 d4 5.d3 c5 and now apparently 6.e4! is the move - if 6...dxe3 white is just better and otherwise 7.e5 followed by Qe2/Nbd2 with a good version of the KIA.
I wonder if that is really just good for White ...in the introduction/overview of the latest update, IMDavidCummings didn't appear to think so.
I am quite surprised that IM Cummings would not like 6.e4!, since it is a thematic move in this Benoni Wall (reversed) type of structures. It's an idea that comes up in similar lines of the English/Reti. Here it looks like the perfect time to play it
To set the record straight, I do like this move! With hindsight, my conclusion “Food for thought for Reti Players!” was a bit too modestly worded, but I didn’t think it would be controversial
My analysis in the PGN gives the nod to White, so the onus is on Black to find improvements.
First of all, 6 e4 was a great find by GM Donchenko, apparently uncovered using LC0 (indeed it is Leela’s first line). When researching games for the June ChessPub Update, his move really stuck out for its originality. In this opening, White, including recent games from the likes of Aronian, Nakamura, Wei Yi, Ding Liren etc., had almost always gone for a reverse Modern Benoni structure (most often with 5 0-0 and 6 e3). In the database, there are hundreds of games with e2-e3 and only five games with 5 d3 and 6 e4.
The point is not to play the reversed KID/Benoni wall, but the King’s Indian Attack structure after 6 e4 Nc6 7 e5, since Black can’t prevent 7 e5 in this line. Now, if Black continues with standard development, White does indeed get a good version of the KIA. See Donchenko-Villegas – a convincing win for White. In Donchenko-Oleksienko, Black varied with an early ...Ne7-g6 followed by trading White’s important f4-bishop. Black was actually better after 15 moves, so analyze this game before declaring victory! As mentioned in my article, White has earlier improvements such as 11 b4. I’ve since done some more analysis here and will update this game in the PGN Archives next month. Analyzing this game using LC0 and SF10 side-by-side is fascinating, they have clearly diverging evaluations in many places.
Coming back to the earlier comments in the thread, I agree that we will see many more LC0-inspired novelties in the coming months!