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Subject: Re: Endgame Suite

Author: Howard Exner

Date: 05:29:31 01/19/98

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On January 19, 1998 at 05:14:51, Ernst A. Heinz wrote:

>On January 18, 1998 at 23:58:55, Howard Exner wrote:
>>On January 18, 1998 at 12:31:40, Ernst A. Heinz wrote:
>>> 1.   0 sec  (mate in 19 after 4 sec)
>>Do you have knowledge for this one and #9 or are they both
>>tablebase solutions?
>
>No special knowledge, just the combination of search and tablebases.
>
>>> 3.   -?-    (prefers Kd5 after 0 sec, score = +1.27)
>>
>>The point of this problem is to avoid Kc3? as Kxg6 draws.After
>>Kd5 you will have to follow up on how to reply to Ra5+. Kc4 in reply
>>to Ra5+ will again draw but Kc6 will be correct. The king has to
>>stay close to the white queening square after the exchange on a1.
>
>PV moves are 1.. Kd5 2. Kh6 g5 3. Ra5+ Kc6! etc.
>
>>>22.   ---
>>
>>#22 shows how difficult the Louguet-2 End#9 really is. I wonder
>>which programs that were given credit for solving Louguet-2 would
>>find this?
>
>"DarkThought" never claimed to solve LCT-II #9 -- the according
>knowledge is still missing ...

Your program sure did well on this suite. I was worried that it might be
too difficult. It also shows how different programs really are when
solving
problem suites even with this small 22 position suite.



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