Computer Chess Club Archives


Search

Terms

Messages

Subject: Re: Material-only search from the starting position

Author: Andrew Williams

Date: 10:36:02 01/14/05

Go up one level in this thread


On January 13, 2005 at 10:35:15, Duncan Roberts wrote:

>First of all thanks for doing this and I believe this has contributed to chess
>knowledge.
>
>
>To sum up can we say on the assumption that null move finds most stuff, that
>most likely there is no material gain for white in the first 35 (12 + 23)moves.
>?
>
You're confusing "moves" and "plies". A move is two plies in this context. I
think I agree with Uri here; I think there's no material gain in the first 35
plies, but I don't think this experiment proves that.

>
>I was rather surprised that as before you had got up to 34 ply, the 6 extra move
>start only gained you an extra ply or 2. Is this something that you were
>expecting ?
>
Yes.

>
>on ply 23 only 8 moves are shown, not the full 23 ply. Why is this ?
>
8 moves = 16 plies. Yes it is expected for PM, which gets its PV from the hash
table; the latter part of the PV will often be overwritten.

>
>if you upgrade in the next 2 -3 years, would you be prepared to re-do the
>experiment to look at 36 ply.
>

Certainly. If I'm spared!

Andrew



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.