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Subject: (OT) E05 Catalan, Open, Classical line = Dvoretsky improvement ?

Author: José Antônio Fabiano Mendes

Date: 05:18:52 02/04/04


 Please see ==> http://www.chesscafe.com/hansen/hansen.htm

Andersson-Karpov
Moscow 1981

1 d4 Nf6 2 c4 e6 3 g3 d5 4 Nf3 Be7 5 Bg2 0-0 6 0-0 dxc4 7 Qc2 a6 8 Qxc4 b5 9 Qc2
Bb7 10 Bg5 Nbd7 11 Bxf6 Nxf6 12 Nbd2 Rc8 13 Nb3 Be4 14 Qc3 Nd5 15 Qc1 c5! 16
Nxc5
 [D]2rq1rk1/4bppp/p3p3/1pNn4/3Pb3/5NP1/PP2PPBP/R1Q2RK1 b
Which would you prefer: 16...Bxc5 or 16...Qb6?

Knowing well what Dvoretsky has in mind, this was probably the easiest exercise
in the entire book for me [Carsten Hansen] to solve, but for newcomers to the
'doctrine' of Dvoretsky, this is the kind of thing that will quickly open your
eyes if you study his material seriously. The answer goes as follows:

The immediate exchange on c5 guarantees Black equality.

16…Bxc5! 17 dxc5 Qe7 18 c6 Nb4 19 Nd4 Bxg2 20 Kxg2 Nxc6 21 Nxc6 Qb7

It is time to agree a draw.

But in what way is 16...Qb6, as recommended in Encyclopaedia of Chess Openings,
worse? That is what Karpov played. The game continued only a few more moves:
17 Qd2 Bxc5 18 dxc5 Bxg2 19 Rfc1 Rfc8 20 Rxc5 Qxc5 21 Ne1 Bxg2 22 Kxg2 Qe7.
Draw.

Serious consideration should be given to the sacrifice of queen for rook, bishop
and pawn. Let us ponder over the position arising after 17 Nxe4! [CH: this is
what I was talking about above] 17...Rxc1 18 Rfxc1.

White intends 19 e3, then 20 Ne5 and the doubling of the rooks on the c-file.
The attempt to exchange a pair of rooks by 18...Qb7 19 Ne5 Rc8 20 Nc3! followed
by exchange of knights leads to the creation of a weak pawn at d5.

As can be seen, by sacrificing the queen you risk practically nothing, whereas
the opponent has to be careful - otherwise White's initiative will become
dangerous. In my view, it is harder to play with Black in such a position than
with White...

 The game can be found here ==> Ulf Andersson vs Anatoli Karpov, Moscow 1981
 http://www.chessgames.com/perl/chessgame?gid=1020076




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