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Subject: Re: Fritz endgame CD

Author: Dave Gomboc

Date: 03:02:56 03/25/99

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On March 25, 1999 at 00:19:38, blass uri wrote:

[snip]

>Here are some wrong assumptions that explain errors for my Fritz5(16 bit):
>
>assumption 1:KRP vs KR cannot be a win for the weaker side.(There is no problem
>of this assumption for KQP vs KQ)
>assumption 2:KQ vs KRP cannot be a win for the weaker side.
>assumption 3:KQX vs KQ when X is not a pawn is a draw unless X is a rook.
>assumption 4:KQR vs KQ cannot be a win for the weaker side.
>
>Uri

Regarding KQP vs KQ:

White: Kh6, Qc7, Ph7
Black: Kg4, Qa6 (to play)
1...Qg5# would win for the "weaker" side.

If they only probe the tablebases at the root of the tree, I can imagine your
suggestion of doing a short search before and after working.  If they probe
within the search like Crafty does, the overhead might be too significant.

Dave Gomboc



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