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Subject: Re: Mate in 19 - Glaurung Seems Faster

Author: Tord Romstad

Date: 10:30:38 12/01/05

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On December 01, 2005 at 13:06:14, Uri Blass wrote:

>unlimited checks in the qsearch cannot work.
>You may not have a limit of plies but with no limit the search is going to
>explode.

I simplified things a bit too much in my post.  Of course I don't search *all*
checks *everywhere*.  Checks are restricted in numerous ways.  I never search
checks with negative SEE value, and I stop searching checks when the number
of qsearch nodes since I left the main search exceeds 400.  Beyond the first
ply of the qsearch, I only search checks if the preceding qsearch plies are
an alternating sequence of checks and single-reply-to-checks (similar to how
Rebel does it).

Tord



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