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Subject: a bug in Fritz5 and Junior4.6

Author: blass uri

Date: 11:04:28 04/04/98


The position:white king e7 queen g5 pawn h6
black king h8 queen a1 pawns d5,h7
It take junior4.6 almost 10 minutes in my computer to see Qe3 give
mate in 9 while after that move it declare mate against itself very
quickly(21 seconds).
fritz5 cannot see it give mate even after Qe3 Qb2 and its evaluation
function after these moves(something like 3 pawns adventage
for white is very strange).
I understand that fritz5 does not understand  positions that there is no
threat but I do not understand its evaluation function.
another problem fritz5 has is that its evaluation function is sensitive
to  the initial position it analyzes.
this is the reason it lost in the wmcc championship against stobor
(only after it traded queens it understood that it was wrong.
I understand that this help it to be faster but I think it will be
better
if it will check if its evaluation function is changed in the main line
and if yes it will use an evaluation function that is not sensitive
to the initial position even if it will be slower



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