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Subject: Re: Testposition - The Weekend Nicholas

Author: Enrique Irazoqui

Date: 08:39:49 03/03/01

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On March 03, 2001 at 11:36:12, Uri Blass wrote:

>On March 03, 2001 at 11:26:50, Enrique Irazoqui wrote:
>
>>On March 03, 2001 at 04:27:10, Sune Larsson wrote:
>>
>>>
>>>  [D]1knB4/8/7p/5R2/7K/8/3r4/7B w - - 0 1
>>>
>>>  Troitzky, (Schachmaty 1934)
>>>
>>>  The title of this one is refeering to a famous movie star.
>>>  Wasn't it Con Air, something with Las Vegas and Face Off?!
>>>  And this person might give a clue to the solution of this
>>>  riddle. It's white to move and win. He has two bishops for
>>>  a knight and pawn + a rook each. Not much material left to
>>>  win considered that both white's preachers are thratened
>>>  at the moment...(1.-Rxd8, 1.-Rh2+).
>>>
>>>  Test: Reveal the secrets! White is winning but how?
>>>        Showing +0.87 or +1.63 won't do...
>>>        I like this one but then again, I like Nicholas too...;)
>>>
>>>  Sune
>>
>>Deep Shredder found Rb5+ in 8 seconds. Deep Fritz didn't get it in less than 5
>>minutes.
>>
>>Enrique
>
>I do not see a win for white in the main line.
>
>> 21.01	14:38 	+3.92 	1.Rb5+ Nb6 2.Bxb6 Rh2+ 3.Kg4 Rxh1 4.Bd8+ Kc8 5.Bh4 Kd7
>>6.Kh5 Ke6 7.Rb6+ Ke5 8.Rb4 Kd5 9.Rg4 (440.000.872) 500.8
>
>I simply do not understand the +3.92 in KRB vs KRP position based on the main
>line
>0.xx seems more logical.
>
>Uri

I just posted about it. This position is too difficult for programs to solve in
a reasonable amount of time.

Enrique



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