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Subject: Re: KPP vs KN

Author: Bruce Moreland

Date: 10:04:56 03/22/99

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On March 22, 1999 at 12:48:08, José de Jesús García Ruvalcaba wrote:

>On March 20, 1999 at 11:45:28, Bruce Moreland wrote:
>
>>The database for this ending has been generated by others recently, but to my
>>knowledge nobody has posted anything about it.
>>
>>The longest mate for white (the side wth the pawns) is 50 moves, but there is
>>also several mates in 17 for the side with the knight.
>>
>>bruce
>>
>
>[positions snipped]
>
>	Do you know which the longest conversions are? I am interested because the mate
>in 50 is a conversion in one, which is not very long.

No, I don't collect that information, that is a whole different database
building strategy.

I think that all of the long ones in this endgame will feature short
conversions, they will be like the case I gave, where white has to underpromote
to a knight in order to avoid a drawn KN vs KP.

You'd think that in the typical case, you'd be able to move a pawn often in this
ending.

You see this in other endings as well.  In the pawn-up minor piece endings
you'll see mates in a hundred or so, because someone has to immediately
underpromote into a KNB vs KN.

bruce



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