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Subject: Re: Two more 'GM stunners', some doubts about the given analysis

Author: pete

Date: 23:47:52 05/19/99

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On May 19, 1999 at 18:28:49, Francis Monkman wrote:

<snip>

>And another from 1971, Smyslov-Adorjan, Amsterdam I
>
>r1b2k1r/pp2p2p/5pp1/1n1NB3/8/1P4P1/P1P4P/2KR3R w - -
>
>I'm sure I waited hours to see if Genius 3 would get this, when I
>first played through it. Also a simple idea -- White will exchange two
>pieces for a rook and two pawns (already a material advantage) after
>which, a human chess player should see at a glance that his two rooks'
>mobility, and the pressure they can put on Black's king and undeveloped
>queenside mean he can 'mop up' the remaining kingside pawns without too
>much trouble:
>
>Nxf6!  exf6  Rd8+   Kg7   Bxf6+  Kxf6   Rxh8  Kg7   Rd8  Nc7   Re1  1-0
>
>Again, none found it within the 5 minutes I allowed (you see I'm getting
>impatient!), except, yes you guessed, LGG 2.0 immediately plays this,
>and for 'all the right reasons'.
>
>I'm not trying to plug LGG too hard, really. I've watched it do some
>pretty terrible things too! But for some of these 'difficult' moves, it
>really does seem to have a consistent edge over the rest.
>
>Francis

<snip>

You say lgg finds this and for the right reason, hmm ...

For example Hiarcs will play nxf6 in no time too and the line up to rd8 is shown
, but the whole variation has a problem ; nc7 is a serious blunder ; black can
play a6 instead which makes it possible to defend the bishop on c8 with na7. I
am quite sure white will win this position eventually but it is very difficult
to judge for a chess prog as the material seems to favour black a little. So the
programs see the combination leading to a little ( in their opinion)  advantage
which can be gained by other first moves too. So if you say lgg finds this in
less than 5 minutes please give the evaluation and the main line.

Pete






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