Chess Structures in Practice (Part Two) by Mauricio Flores Rios
I am back for a second and final guest blog post here on the QC blog. You will be able to see a copy of this post, and all my future posts on chess-structures.com, my new blog.
Just like many of you, I spent a fair amount of time last week going following the US Chess Championship played in St Louis. There was plenty of excitement, the live broadcast was very good and more important than anything, the tournament featured what was arguably the strongest combination of twelve players to ever compete in the US Championship. Despite having plenty of nice games to choose from, I think that the game I will show next was the nicest illustration of concepts from Chess Structures put into practice.
Alexander Onischuk (2655) – Daniel Naroditsky (2633)
US Chess Championship 2015
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Nf3 Bb4+ 5.Bd2 Bd6 6.Bg2 c6
The move order 6…0-0 7.0-0 Nbd7 8.Qc2 and only now 8…c6 seems to be more precise, making it harder for White to take control of the center.
7.Nc3 O-O 8.Bg5! Nbd7
8…dxc4 would be met by 9.Nd2 followed by 10.Nxc4.
9.e4 dxe4 10.Nxe4 Bb4+ 11.Nc3!
In case of 11.Bd2? Bxd2 12.Nexd2 e5! and Black equalizes.
We have reached the Caro-Kann Formation (Chapter 3), where White has more space and a better control of the center. The assessment of this position depends almost exclusively on whether Black can find a way to break in the center to release his spatial disadvantage. Otherwise, White will enjoy a lasting positional edge.

11…h6
Getting rid of the pin, aiming to create some counterplay with …Ne4.
It seems Black did not have better options, for example 11…c5 12. 0-0 cxd4 13. Qxd4 where White has superior coordination. Also 11…Qa5 12.Bd2 e5 is met by 13.a3! Bxc3 14.Bxc3 Qa6 15 0-0! with a big advantage.
12.Bf4 Ne4 13.Qc2 Nxc3 14.bxc3 Ba5 15.O-O

This is a good moment to evaluate the position. The structure has changed slightly since White now has doubled c-pawns (which also means he has a semi-open b-file). Black has been unable to release his position with either …c6-c5 or …e6-e5 and having his bishop trapped on c8 only adds to his misery. White has a very comfortable advantage.



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