(1) Ivanchuk,Vassily (2754) - Jobava,Baadur (2710) [B12]
39th Olympiad Men Khanty-Mansiysk RUS (7.1), 28.09.2010
1.e4
c6
2.d4
d5
3.f3
Though not the first time Ivanchuk plays this line, the main proponents of the day are Timofeev, Nepomniachtchi, and Zviaginsev.
3...Qb6
Though it is certainly offbeat, it was hardly a surprise as Jobava played this twice in the European Championship earlier this year against Timofeev and Nepomniachtchi. Note that Ivanchuk himself played this as Black in the 2010 Capablanca Memorial, beating Nepomniachtchi.
4.a3
So much for the fledgling theory that existed. Obviously both players are more than desirous to play original and little-analyzed positions, but Jobava seems to feel this modest move is a red flag being waved at him.
4...e5!?
There is nothing wrong with this move though it does tend to dissolve the central tension almost immediately, barring certain extreme sacrificial reactions by certain black-piece players that is...
5.exd5
Nf6
[5...cxd5
would be a calmer and more principled continuation as white would have to justify both a3 and f3, which don't help his development any. 6.c3
(6.dxe5?!
Bc5
7.Nh3
Nc6
and black looks better.) 6...Nc6
With a good game.]
6.dxe5
Bc5
It seems clear that black had already decided on this continuation upon playing 5...Nf6. The gloves are off!
7.exf6
Bf2+
8.Ke2
0-0
9.Qd2
9...Re8+?!
On principle, this decision looks quite odd. It isn't so much the material issue of two pieces and rook for the queen (and chaos on the board still), but the fact that black will trade off two developed pieces for the queen, with no immediate way to aggressively sustain the initiative. For this reason alone Bxg1 seemed more logical.
10.Kd1
Re1+
11.Qxe1
Bxe1
12.Kxe1
Bf5
13.Be2
The plans for both sides are quite clear: white must try to defend his king and material against the oncoming onslaught and if successful should win, and Black must pressure and threaten white so that he either wins by a mating attack or forces material concessions in his favor. The key issue is really how to proceed.
13...Nd7
14.dxc6
bxc6
15.Bd1
Re8+
16.Ne2
Nxf6
17.Nbc3
In terms of piece play alone, it is hard to see how black can increase pressure. He opts to reroute the bishop to a6, but perhaps it won't really change all that much. Possibly black had to try and figure a way to soften the kingside up with the pawns and pieces, whle keeping white tied up in the center. Whether or not that is even possible is hard to judge of course, but as it stands, black's initiative seems to be pettering out.
17...Bc8
18.a4
a5
19.Rf1
Ba6
20.Rf2
h5
21.Ra3
h4
22.g3
h3
23.g4
Rd8
24.Nf4
Nd7
25.Rb3
Qd4
26.Nfe2
Re8
27.Ne4
Qxa4
28.Bd2
Qa1
29.Bc3
Ne5
30.Ra3
Qb1
31.Nd2
Qc1
32.Rxa5
Ng6
33.Rxa6
Nf4
34.Ra8!
[34.Ra8
After 34...Rxa8
35.Nxc1
] 1-0