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Subject: Re: To : Lauren Chen . Here is the right position ! sorry

Author: José de Jesús García Ruvalcaba

Date: 14:28:52 07/19/99

Go up one level in this thread


On July 19, 1999 at 17:19:09, Dann Corbit wrote:

>On July 19, 1999 at 16:51:18, Michael J Fitch wrote:
>
>>On July 19, 1999 at 15:34:34, Tania Devora wrote:
>>>
>>>Sorry the las positions is this :
>>>
>>>
>>>White :  Ra2. Kc8.
>>>pawns : b6.
>>>
>>>
>>>Black : Ka8. Bb8
>>>Pawns : b7. a6.
>>>
>>>
>>>
>>>Fritz cant see a simple MATE IN TWO !!
>>>
>>>Hiarcs cant see in less than a second!
>>
>>If the position you give above is correct.there is no mate in 2(sorry)
>>My Fritz5 in chessbase 7 gives a mate in 8 in a 20 seconds
>Actually, assuming that white is to move [the only possibilty since white is in
>check], there is a mate in 3:
>H:\foobart\sub\Release>chest < t
>CHEST version 3.15, 28-Dec-1998
>Options =
>Input file: STDIN
>Reading job:
>W:  Kc8 Ra2 Pb6 (3)
>B:  Ka8 Bb7 Pa6 (3)
>FEN: k1K5/1b6/pP6/8/8/8/R7/8 w - -
>analysing (mate in 8 moves):
>Solution (in 3 moves):
>        Kc8 - c7
>refu  1: Kd8    Bc6    [  2-]
>refu  2: Kc7    a5     [  1-]
>solu         1: a5     [  2+]
>solu         2: Bd5    [  1+]
>solu         3: Be4    [  1+]
>solu         4: Bf3    [  1+]
>solu         5: Bh1    [  1+]
>solu         6: Bc8    [  2+]
>solu         7: Bc6    [  1+]
>solu         8: Bg2    [  1+]
>refu  3: Kd7    Bc6+   [  2-]
>solu         9: Bc8+   [  2+]
>Time (user) = 0.00 sec
>
>It would be nice if the positions were posted in standard EPD or at least the
>side to move were specified.

Hi Dann,
	you did not copy the position correctly. Black has a pawn on b7 and a bishop on
b8, so the white king at c8 is not in check. Still I am baffled, it seems that
famous Morphy problem but copied wrong, too!
José.



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