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Subject: Re: Try this position with Shredder 9.1 UCI

Author: Robert Hyatt

Date: 12:56:02 10/24/05

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On October 24, 2005 at 15:54:16, Robert Hyatt wrote:

>On October 24, 2005 at 15:26:12, Helmut Conrady wrote:
>
>>On October 24, 2005 at 13:46:43, Kurt Utzinger wrote:
>>
>>>On October 24, 2005 at 11:50:14, Helmut Conrady wrote:
>>>
>>>>On October 24, 2005 at 09:55:40, Kurt Utzinger wrote:
>>>>
>>>>>On October 24, 2005 at 09:51:01, Jouni Uski wrote:
>>>>>
>>>>>>[D]N7/PPPPPPPP/K1k3qB/brpnn3/7N/6rb/8/8 w - -
>>>>>>
>>>>>>I don't know if it's legal (from old CSS magazine).
>>>>>>
>>>>>>Jouni
>>>>>
>>>>>      This position is of no practical interest
>>>>>      and therefore (for me) not worth testing.
>>>>>      It's also an illegal (impossible) position.
>>>>>      Regards
>>>>>      Kurt
>>>>
>>>>I think, the position is legal. What arguments do you have for opinion, Kurt?
>>>>
>>>>Helmut
>>>
>>>      Hi Helmut
>>>      I consider all positions which can under no
>>>      circumstances happen in a game as illegal.
>>>      Of course: I don't have studied the FIDE
>>>      rules to come to this conclusion :-)
>>>      Regards
>>>      Kurt
>>
>>Again: Why can this position under *no circumstances* happen in a game?
>>
>>Helmut
>
>nobody in their right mind would advance all pawns to the 7th prior to promoting
>one or more of 'em.  :)
>
>I believe it is an illegal position because the black pawn is impossible.  How
>did it get through the line of white pawns?  Only way is to make a capture
>through the white pawn line as they advance.  But what did it capture, since all
>white pawns and pieces are still on the board, if my eyes are working.
>
>Hence completely impossible to reach from the starting position, playing only
>legal moves...


Please ignore that illegal part.  most of white's pieces are gone.  my
experimental version of firebird seems to have a problem refreshing some of
these diagrams.  It does look perfectly legal, if not logical. :)



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