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(1) Karjakin,Sergey (2694) - Alekseev,Evgeny (2716) [B90]
World Cup Khanty-Mansiysk RUS (5.4), 08.12.2007
1.e4
c5
2.Nf3
d6
3.d4
cxd4
4.Nxd4
Nf6
5.Nc3
a6
6.Be3
e5
7.Nb3
Be7
8.f3
Be6
9.Qd2
Nbd7
10.g4
0-0
11.0-0-0
Qc7
12.Kb1
b5
13.g5
Nh5
14.f4
exf4
15.Bxf4
Nxf4
16.Qxf4
Rac8
17.Nd4
Nb6
18.Bd3
Qc5
19.Nf5
Rce8
20.Nxe7+
Rxe7
21.e5
d5
22.h4
Nc4
23.h5
d4?
It is interesting to watch chess engines sink their teeth into this position. How long does it take them to come up with Karjakin's plan? [23...Qe3
was better.] 24.h6!
g6
[24...Qxe5
doesn't save Black – take a look at some of the lines: 25.Bxh7+
Kxh7
26.hxg7+
Kxg7
27.Qh4
Rc8
(27...Bf5
28.Qh6+
Kg8
29.Nd5
Bxc2+
30.Ka1
(30.Kxc2??
Qe2+
31.Rd2
Qxd2+
32.Kb1
Qxb2#
) 30...f5
31.Nxe7+
Qxe7
32.Qh8+
Kf7
33.Rh7+
Kg6
34.Rh6+
Kf7
35.Qh7+
Ke8
36.Qg6+
Rf7
37.Qxa6+-
) 28.Qh6+
Kg8
29.Qf6
Qxf6
30.gxf6
Ne5
(30...Rd7
31.Rdg1+
with mate to follow.) 31.fxe7
Ng6
32.Rxd4+-
] 25.Nd5
Qxd5?
loses quickly. [Black can try 25...Na3+
but after 26.bxa3
(or simply 26.Kc1+-
) 26...Qxd5
27.Qf6
Qxe5
(27...Qxa2+??
28.Kc1
does not stop the white mate on g7.) 28.Qxe5
Bxa2+
29.Kxa2
Rxe5
White is winning.] 26.Bxc4
Qxc4
27.Qf6
and now Black cannot stop the mate. 1-0
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