Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: How much ply should FINE #60 be solved?

Author: Robert Hyatt

Date: 15:32:23 07/03/03

Go up one level in this thread


On July 02, 2003 at 14:38:25, Dieter Buerssner wrote:

>On July 02, 2003 at 14:27:11, Michel Langeveld wrote:
>
>>>Also, this position is Fine 70 (not 60), IIRC. :)
>>
>>Why is there less ply needed to solve it with using hashtables?
>
>This position is about tempo tricks. In a normal alpha-beta search using engine,
>even with optimal move ordering, you have to do all moves, and refute them. Many
>such moves will yield in shortcuts to the mainline. The HTs will remember the
>positions after the shortcuts, and with this info, the engine can see the
>mainline earlier.
>
>>p.s. Yes I saw after this post it's Fine #60 ... also I mean one pawn upwards
>>instead +2
>
>Seems the "7"-key is not working well on your keyboard :-)
>
>Anyway, when your engine solves this fast, but needs still 26 plies with HTs, I
>think it is no reason to be concerned.
>
>Regards,
>Dieter


I would agree.  But if it needs _more_ than 26 plies, look out, although
that could be a zugzwang problem if you use null-move in pawns-only endings.



This page took 0 seconds to execute

Last modified: Thu, 15 Apr 21 08:11:13 -0700

Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.