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Subject: Re: Endgame

Author: Mike Hood

Date: 08:41:34 11/10/03

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On November 10, 2003 at 04:44:10, Jouni Uski wrote:

>Hard for Ruffian (P4 2,4 GHz), not found in 20 minutes, BUT after executing
>move sees very fast, that white is mated! Null move problem?
>
>Jouni

Not sure what the problem is... setting Fritz 8's selectivity parameter to 0
turns off the null move algorithm -- if you can trust the help file :) -- but it
still doesn't find Qxf3 after 60 minutes.

Sometimes it's useful to use Fritz's infinite analysis with multiple lines, just
to see how far down the list the "correct" move is. Even at search depth 11
(selectivity still set to 0), Qxf3 is 22nd out of 26 moves. Fritz spends a lot
of time pondering moves 1 to 21, but skips over moves 22 to 26 in less than a
second.




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