Author: Geoff Westwood
Date: 15:52:36 02/23/04
Hi
I was perusing the latest table of results, Crafty's static eval of 2 of the
passed pawn positions were interesting.
Assuming I havent made a mistake in the cutting and pasting
Position 1
8/4k3/8/7P/1P6/3p4/4p3/4K3 b - -; id "PP-00004"
[D]8/4k3/8/7P/1P6/3p4/4p3/4K3 b - -
Crafty reckons this is +4.8 (good for white). This is rather clever as although
the black king could catch either of the white passed pawns, it cannot stop
both. Also blacks 2 advanced pawns cant do anything as the white king gobbles
them up easily. Only Crafty and Tinker understand this position statically. Any
tips on what the algorithm is to sort this one out ?
Position 2
8/P5p1/4P3/8/2k5/2P1pb2/8/4K3 b - -; id "PP-00005"
[D]8/P5p1/4P3/8/2k5/2P1pb2/8/4K3 b - -
Crafty reckons that this is -7.16 (won for black ??)
Firstly is this a typo should it be +7.16 ? Surely this position is won for
white as the bishop cannot stop both pawns again.
If not a typo Crafty seems to be statically evaluating this quite badly, maybe
the clever eval in the previous position is flawed ? Or I have got my +/- signs
confused.
regards Geoff
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