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Subject: Re: One mate to solve (Chest result)

Author: Uri Blass

Date: 12:44:57 07/29/01

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On July 29, 2001 at 15:29:36, Heiner Marxen wrote:

>On July 27, 2001 at 21:01:50, Heiner Marxen wrote:
>
>>On July 27, 2001 at 19:44:05, Uri Blass wrote:
>>
>>>On July 27, 2001 at 19:39:35, Uri Blass wrote:
>>>
>>>>On July 27, 2001 at 10:53:28, leonid wrote:
>>>>
>>>>>Hi!
>>>>>
>>>>>If you are ready, you can solve this problem:
>>>>>
>>>>>[D]1N1k1N1B/q1q1q1q1/1rRbRr2/Q1nBn1Q1/1Q3Q2/n1Q1Q1n1/1Q1Q1Q2/n2K2nb w - -
>>>>>
>>>>>Please indicate your result... even if your program fail.
>>>>>
>>>>>Thanks,
>>>>>Leonid.
>>>>
>>>>chesmaster6000(PIII850 ss=10)
>>>>solution Rexd6+
>>>>3:56 mate in 11
>>>>5:47 mate in 10
>>>
>>>and after 10:49 Rxc7 is mate in 9
>>>
>>>Uri
>>
>>Chest has "problems" with this problem: to find "no mate in 7" needed already
>>103 minutes.  With an effective branching factor of 15+ the next depth will
>>need more than a full day.  :-(
>>If there is no mate in 8 it is out of reach for Chest.
>>
>>To be continued... :-)
>>
>>Heiner
<snipped>
>Ha!  According to Chest this is a mate in 8 :-)

I understand that there is only one solution
Am I right?

Note that I did not give chessmaster more than 15 minutes so I am not going to
be surprised if chessmaster6000 can solve it faster.

I expect chessmaster to solve it faster if it is not a null move problem and I
do not believe that it can be a null move problem with so many pieces on the
board but I am not going to give chessmaster many hours to calculate this
position.

Uri



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