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Subject: Re: How many 7-man Pawnless endgames?!

Author: Les Fernandez

Date: 18:01:41 10/18/05

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On October 18, 2005 at 20:54:03, Marc Bourzutschky wrote:

>On October 18, 2005 at 20:03:56, Les Fernandez wrote:
>
>>On October 18, 2005 at 12:37:17, Marc Bourzutschky wrote:
>>
>>>On October 18, 2005 at 11:12:03, GuyHaworth wrote:
>>>
>>>>
>>>>I question your '736'.
>>>>
>>>>I have:
>>>>
>>>>  056  6-1 endgames
>>>>  140  5-2 endgames
>>>>  200  4-3 endgames
>>>>  ---
>>>>  396  endgames
>>>>
>>>>... and therefore 792 endgames, if you also count the 3-4, 2-5 and 1-6 endgames.
>>>>
>>>>Have I gone wrong somewhere?
>>>>
>>>>g
>>>
>>>All entries in a 1-N database are trivially either "not-won" or "not-lost", so
>>>there is no point in generating it.  If you exclude the 56 1-6 endings from your
>>>count you get Yakov's 736.
>>>
>>>-Marc
>>
>>Hi Marc,
>>
>>I agree that from the standpoint of playing chess there is no point in
>>generating the 1-6 endings but from my perspective I have been doing a bunch of
>>studies on all the end game sets that have been generated so far and it is very
>>important for me to get the complete data sets.  I have mentioned to Eugene in
>>the past that I would only hope that when he is done with all the 6 piece EGTB's
>>if he might consider that 1-5 set and the jury is still out.  I am sure that
>>those positions like 1-5 or 1-6 should solve pretty quickly and I would do them
>>if I had the extra equipment to do so.
>>
>>Thanks,
>>
>>Les
>
>You missed the point here.  The 1-5 and 1-6 databases contain information at
>all.  All the information is in the 5-1 and 6-1 databases.
>
>-Marc

Oh ok gotcha! <S> THx

Les



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