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Subject: Re: Null-Move: Difference between R = 2 and R = 3 in action

Author: Robert Hyatt

Date: 19:20:29 07/20/02

Go up one level in this thread

On July 20, 2002 at 05:55:43, Uri Blass wrote:

>On July 20, 2002 at 05:47:38, Gian-Carlo Pascutto wrote:
>>On July 20, 2002 at 02:52:11, Uri Blass wrote:
>>>My question was not about comparing using hash tables
>>>and not using hash tables but about comparing using hash tables
>>>in the normal way and using hash tables
>>>for all purposes except pruning.
>>In the example given, the move ordering from hashtable is almost
>>irrelevant, so all the gains are due to pruning.
>I did not ask about single example from endgame but about
>the middle game or about rating improvement.

I gave you an answer of sorts.  Best case is fine 70.  3x as many plies.
Middlegame seems to be a factor of 2x in terms of time to reaching a specific
depth.  So a fraction of a ply.  So from early middlegame to endgame sees this
go from a fraction of a ply to (say) 30 additional plies...

The 30 is important.  It doesn't just happen in fine 70.  It happens in lots
of important king and pawn endings.

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