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Subject: Re: Easy & Hard

Author: martin fierz

Date: 17:31:10 07/26/02

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On July 26, 2002 at 18:14:08, Dieter Buerssner wrote:

>On July 26, 2002 at 16:55:27, Slater Wold wrote:
>
>>On July 26, 2002 at 14:53:33, Dieter Buerssner wrote:
>>
>>>On July 26, 2002 at 00:54:10, Slater Wold wrote:
>>>
>>>>8/pR4pk/1b2p3/2p3p1/N1p5/7P/PP1r2P1/6K1 b - - 0 31
>>>>
>>>>The only move to make here is Rxb2.  The win is only about 10 moves away, and
>>>>while some programs I tested find Rxb2, none have an impressive score.  And
>>>>that's *if* they find it.
>>>
>>>What would be an impressive score?
>
>You cited everything, but you did not answer my question.
>
>>>Is this won for black? I cannot see it ...
>>Both postions are confirmed wins for black after Rxb2.
>>
>>One is deep and one is deeper.
>
>Cann you please show a sample (or even a convincing) winning line in the second
>position after
>
>30...Rxb2 31. Nxb2 c3 32. Rxb6 c4 33. Rb4

i don't understand why you suggest this line.
e.g 33. ...a5 34. Nxc4 c2 35. Nxa5 c1=Q+ 36. Kh2 Qc5 winning the knight. the
only hope for white is that he might have a fortress - but i don't think he has.
this is btw what slater posted here (and some more):
http://www.talkchess.com/forums/1/message.html?242648

what i don't understand is why you wouldn't go for

33.Nxc4 c2 34. Rc6 c1=Q+ 35. Kh2. again, white will try for a fortress,
and this time i think he has much better chances. unfortunately, black retains
the a-pawn - withouth a-pawns this position is clearly a draw.
in the final position above, if white could achieve a3, Rf3, Ne5, he would have
a safe draw i think. as it is, the white pieces cannot move freely. say 35.
...Qb1 36. a3. i played around with fritz in this position to a draw finally,
but that's no serious analysis. but if the other positin with R vs Q is lost,
this is the way to go.

aloha
  martin

>Regards,
>Dieter



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