Such a pin is common in the Veresov, but here it can be even more effective as there is no white bishop pinning the f6 knight, which might be able to drop into e4.
One point of the line is that Black can play a quick ...c5 without worrying about a white knight landing on b5 and attacking the c7 square.
Baadur Jobava (GM 2708) - Oleg Korneev (GM 2501)
Tseshkovsy Memorial (Sochi, Russia) 2014
5.Bd3 c5 6.dxc5
White should be careful. 6.a3? lost a pawn in Chongsheng Zeng (GM 2536) - Jianchao Zhou (GM 2613), Chinese Championship (Xinghua) 2016, after 6...Bxc3+ 7.bxc3 Qa5, as 8.Qd2? runs into 8...c4 and 9...Ne4.
6...Nbd7
Black wishes to capture on c5 with this knight and so prolong the pin on the white c3 knight.
7.Ne2
This scores much better in ChessBase's 2020 Mega database than the equally popular 7.Nf3.
7...0-0!? 8.Bd6!?
White makes it as difficult as possible for Black to regain the pawn.
8...Re8 9.Bb5 a6
Stockfish10 and Komodo10 suggest sacrificing the exchange with 9...b6!? 10.Bc6 Ba6 11.Bxa8 Qxa8. After the further moves 12.0-0 bxc5 13.Bg3 e5, Black has more space and the bishop-pair, but I suspect most humans would rather have the white pieces.
10.Bxd7 Nxd7 11.Qd4 Qa5 12.0-0-0!?
This gives the impression of castling into it, but may be OK.
Lars Oskar Hauge (IM 2468) - Dmitrij Kollars (GM 2564), Pro League (rapid) 2019, saw 12.0-0 Bxc5 13.Bxc5 Qxc5 (½–½, 79 moves).
12...Bxc5!?
Black is at least equal after 12...b6, eg 13.Bc7 Bxc5 14.Qa4 Qxa4 15.Nxa4 Ra7 16.Nxc5 Rxc7.
The consistent 12...Nxc5 also looks fine as 13.a3? is met by 13...Nb3+ 14.cxb3 Bxd6.
13.Bxc5 Qxc5
 |
| How should White proceed? |
*****
*****
*****
*****
14.e4!
White gets an initiative.
14...Qxd4 15.Nxd4 dxe4 16.Nxe4
The position is simplified, but White has a handy lead in development.
16...Nf6 17.Nxf6+ gxf6 18.Ne2
Taking control of the d file.
18...e5 19.Nc3 Be6 20.Nd5 Bxd5 21.Rxd5 Kg7 22.Rhd1 Re6 23.Rd7 b5 24.R1d6 Rae8 25.Kd2 f5 26.b3 f4!?
This looks strange. Normal, but not ecessarily better, is 26...Kf6.
27.g3!?
Allowing Black to undouble his pawns also seems odd, but the idea may be to make it more difficult for Black to create a passed e pawn..
White could have created a passed pawn of his own with 27.c4.
27...fxg3 28.hxg3 b4 29.c3 bxc3+ 30.Kxc3
White remains better. He has only two pawn-islands and will find it much easier to create a passer.
30...h5 31.b4 e4 32.a4 e3 33.fxe3 Rxe3+ 34.Rd3 Rxd3+?!
The engines strongly prefer 34...R3e4, eg 35.Kb3 Rb8 36.R7d4 Re1 37.Kb2 f5, when it is hard to see how White makes progress.
35.Rxd3 Re6 36.b5 axb5 37.axb5 Re4?
The engines' 37...Kg6 is better.
38.b6
The pawn cannot be stopped.
38...Re6 39.b7 Rb6 40.Rd7 Rb1
Or 40...Kf6 41.Kc4 Ke6 42.Kc5 Rb1 43.Rd6+ Ke7 44.Rb6 Rc1+ 45.Kd5 Rd1+ 46.Ke4 etc.
41.Kc4 Kg6 42.Kc5 Kg5 43.Rxf7 Kg4 44.Rf4+ Kg3 45.Rb4 1-0
No comments:
Post a Comment