A winning Queenside attack
In the Fianchetto Variation of the King’s Indian White doesn’t really have to worry about his king getting mated any second. On the other side, Carlsen managed to get his Queenside attack going in his game against the World, producing an instructive game.
Carlsen, M (2826) - The WorldRAW Challenge (New York), 10.09.2010E62, King's Indian, g3
1.d4 Nf6 2.c4 g6 3.Nf3 Βg7 4.g3
Recently fianchettoing the Bishop has gained some popularity, possibly due to the fact that the Bayonet Variation (9.b4) hardly offers White any chances for an advantage anymore.
4...0–0 5.Bg2 d6 6.Nc3 Nc6 7.0–0 e5
Against the Fianchetto system this setup is hardly seen anymore these days. More common are the solid 7...Bf5 or the more dynamical approaches 7...Rb8 and 7...a6.
8.d5 Ne7 9.e4 c6?!
A rare move. The main line runs 9...Ne8 though after 10.Ne1 f5 11.Nd3 Nf6 12.Bg5 the statistics are clearly on Whites side. Contrary to the Classical Variation, where White develops his Bishop to e2, its quite hard for Black to launch an attack on the kingside. In fact, in these structures its up to White to open the centre with f2-f4. Whites plan was perfectly demonstrated in the following high level encounter: 12...h6 13.Bxf6 Rxf6 14.f4 exf4 15.Nxf4 Kh7 16.Qd3 Rf8 17.Rae1 Be5 18.exf5 Nxf5 19.Kh1 Qf6 20.c5 Qg7 21.cxd6 cxd6 22.Ne6 Bxe6 23.dxe6 Rac8 24.Nd5 and White was clearly on top in Kasparov-Ivanchuk, Riga 1995.
The only earlier game played with 9...c6 continued with 10.b3 cxd5 11.cxd5 Bg4 12.a4 Rc8 13.Bb2 Rxc3! 14.Bxc3 Nxe4 and Black had excellent compensation for the exchange in Baramidze-E.Zude, Saarbruecken 2009.
This looks quite innocent, but soon the strength of this move will be revealed.
Afterwards this move was seriously criticized by various commentators. Nakamura preferred to keep the tension in centre by 11...Qd7.
12.cxd5 Qd7 13.Be3 Rfc8 14.Qa4!
With this multi-purpose move White’s intentions on 11th move become clear. He connects his ¦s and gives the ¤ on f3 the possibility to transfer to the queenside.
In case of exchanging Qs with 14...Qxa4 15.Rxa4 White obtains very easy play on the queenside. Black finds difficulties dealing with the weak pawns on a7, b7 and d6.
15.Nd2 Qd8 16.Qb4 Nc717.Nc4?!
A logical move, increasing the pressure on Blacks position. Its clear that the pawn on b7 is poisoned: 17.Qxb7? fails to 17...Rcb8 trapping the Queen. However, Carlsen misses a far stronger move by means of; 17.f3! when Black can only play 17...Bd7 18.Qxd6 and his position collapses.
17...Na6 18.Qxb7 Rxc4
In case of 18...Nc5 White has 19.Bxc5! Rxc5 20.Nxd6! since after 20...Rb8 21.Qa6 Rxb2 22.Na4 Rxa5 23.Qxa5 Qxa5 24.Nxb2 his advantage is beyond doubt.
At a cost of a pawn, Black got rid of Whites pressure. In the following phase of the game, Carlsen instructively restricts Blacks activity.
19...Rb4 20.f3 Bc8 21.Qe2 f5 22.Qd2 Ba6 23.Rfc1 Qb8 24.Na4!
It seems the kNight doesnt have a great future here, though Black has to be careful not to lose material by Nb6 at various moments.
24...Rb3 25.Rc3 Rb4
Black is also left without any counterplay after 25...Rxc3 26.Nxc3.
Renewing the threat of Nb6.
26...f4 27.Bf2 Bh6 28.Nb6!?
Gallery play from Carlsens side. A cleaner win was suggested by Kasparov: 28.g4! not allowing Black any kind of counterplay. After 28...Rb3 (28...Rb7 29.Nb6!) 29.Bf1 White is still a healthy pawn up, while Blacks pieces look very clumsy.
28...fxg3 29.Qxb4 gxf2+ 30.Kxf2 Bc8
The forcing line 30...axb6 31.axb6 Bb7 32.Rxa8 Bxa8 is strongly met by 33.Bh3! There is nothing to do against the threat of Qa4-a7. However, as Carlsen afterwards admitted he was somewhat worried about 30...Bf4!? giving Black some counterplay against his King.
Protecting the Queen and so forcing Black to capture the kNight.
31...axb6 32.Qxb6 Qa7
32...Qxb6+ 33.Rxb6 with the idea of protecting d6 by 33...Ra6 doesnt help in view of 34.Rxa6 Bxa6 35.Bf1 and the a-pawn decides.
33.a6 Kf7 34.Qxa7 Rxa7 35.Rb6
Since White will pick up another pawn on d6, Black cant no longer put up any resistance.
35...Ke8 36.Rxd6 Bf8 37.Rb6 Nxd5 38.Rb8
Obviously Carlsen doesnt fall into the trap 38.exd5? Bc5+.
38...Bc5+ 39.Kg3 Ne7 40.Bh3 Kd8 41.Bxc8 Nxc8 42.Rc1 Rc7 43.Rxc5! Rxc5 44.a7