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Subject: Re: Mate in 38 in 1 second!!! (by next ChestUCI)

Author: Heiner Marxen

Date: 07:18:25 01/31/04

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On January 31, 2004 at 06:34:42, F. Huber wrote:

>On January 31, 2004 at 04:48:39, Manfred Meiler wrote:
>
>>(...)
>>>Do I understand you right?
>>>You prefer a Chest, which is _not_ able to solve such a deep mate at all
>>>(of course this is impossible with brute-force!), instead of a Chest with
>>>an _additional_ mate solving mode, which _can_ find such solutions
>>>(although it´s not guaranteed to be the shortest one)?
>>>
>>>If this is the common opinion here, I see absolutely no reason to make
>>>this new Chest version (with my enhancements) available to the public! :-(
>>>
>>>Franz.
>>
>>
>>Hi Franz,
>>
>>if I understand your description above correct this ChestUCI v3.2 offers a new
>>feature "Search for Special-Mate mode" - additional to the known mate solving
>>mode of ChestUCI with guaranteed shortest mate ?
>>Of course I'm very interested in this new ChestUCI version.
>>
>>Best regards,
>>Manfred
>
>Hello Manfred,
>
>as usual you´ve exactly got the point! ;-)
>
>There´s indeed an _extra_ mode ´Special-Mate´ with three new adjustable
>options (´ChecksOnly´, ´KingMobility´ and ´MaxMoves´), which allow to
>restrict Chest´s mate search and thus _can_ sometimes give really
>incredible fast solutions.
>
>Unfortunately with one of these options (´ChecksOnly´) there´s still
>a little problem, for which not even Heiner Marxen has yet found the
>reason (or a solution ), but he´s working on it (at least I think so ;-)),
>and I hope he´ll solve this problem - otherwise I will have to take out
>this feature again (or at least restrict its possibilities to the part
>which is working correctly).

I just found the explanation why this feature does not work properly,
as currently implemented.  Unfortunately, there is no easy fix as far as I
can tell.  May be I'll find one in the next days... I'll email you details.

Sorry, I'd like that feature myself :-(

Cheers,
Heiner


>Best regards,
>Franz.



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