Author: Uri Blass
Date: 11:51:24 10/03/03
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On October 03, 2003 at 13:38:54, Mridul Muralidharan wrote: >Hi, > > I was a bit taken aback by these declarations : > >On October 03, 2003 at 12:47:23, Uri Blass wrote: >>I prefer even not to care about using hash tables for pruning because my >>experience told me that I cannot get significant gain there easily > >Hash table not giving you pruning ? I suspect a bug in your hashkey - >nothingelse. >Or maybe it is the easily that is operative word ? >I think there are a lot of open source programs that you can refer to and >correct your bugs with - crafty , GNUChess , etc , etc. >Might help to get this right. I do not like to copy from other sources. I found that instability helped me to do my program significantly better. If I delete it in order to be able to copy from other programs then I may need to start by doing it significantly weaker. > > >>(I have a lot >>of stuff that means that pruning or extension is not defined only by the >>position). > >Where ever possible , I try to make the search behaviour as relevent to the >current position as possible and not rely on past search. >Why do you want to do the opposite ? because the opposite gives me some advantages. Movei has its chances against every program inspite of having bad order of moves and bad extensions and bad pruning. I believe that I can get above Crafty level if I improve order of move extensions,pruning and evaluation. Movei already has its chances against Crafty but today crafty is significantly better. There is a lot to improve and the main problem is programming. Uri
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