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Subject: Re: wrong solution from chess programs ?

Author: Uri Blass

Date: 10:43:36 04/30/03

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On April 30, 2003 at 13:03:36, Heiner Marxen wrote:

>On April 29, 2003 at 14:08:44, Uri Blass wrote:
>
>>On April 29, 2003 at 13:45:37, Uri Blass wrote:
>>
>>>On April 29, 2003 at 09:22:21, phili_ppe wrote:
>>>
>>>>Problem from Bruno Fargette, dedicated to Camil Seneca.
>>>>from book : "150 problemes d'echecs" by Camil Seneca.
>>>>
>>>>Without the rook at d6 the sole move of black would be Bxf2 then Nxf2 mate.
>>>>
>>>>Try number 1
>>>>1. Qb1 ?   Rd2+ !	2. Kxd2 ? stalemate
>>>>		2. Kb3	Rd1 !	3. Kb2	Rd2+ !	4. Ka1	Rd1 !! and White is in zugzwang
>>>>
>>>>So the goal is to reach the same position ***with black to move***
>>>>
>>>>Try number 2
>>>>1. Kb2 ?	Rg6 !	2. Ka1	Rxg4	3. Qb1	Rxa4+	4. Kb2	Rb4+	5. ... Rxb1 and Black wins
>>>>
>>>>Try number 3
>>>>1. Qe4 ?	Rb6 ! and the white king cannot move to a1
>
>1.Qe4 Rb6 2.Nxg1!
>
>For more details please look at the page I link below.
>
>>>No Qe4 was proved by chest to be a mate in 10
>>>see http://www.talkchess.com/forums/1/message.html?294904
>>
>>Correction
>>
>>http://www.talkchess.com/forums/1/message.html?294724
>>
>>Uri
>
>That is another thread.  Most probably you ment this one:
>
>http://www.talkchess.com/forums/1/message.html?294395
>
>Cheers,
>Heiner

Yes

I looked for your name in the posts.

In the first time I remembered the right number in the link and later copied the
link of the post that I replied to and forgot to change the number when I
posted.

Later I understood the error but did not remember the number so
I decided to go again to the post and copy directly the link but it seems that I
copied the wrong link.

Note that I was not 100% sure that it was the same position
so before Imy response I copied the FEN from the link to compare with the
FEN of the original thread and I responded only after I saw that the FEN is the
same(this was the reason that I did not copy the right link in the first try
because I had to copy the FEN to compare and was too lazy to copy both the FEN
and the link to a special text file).

Uri



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