Author: Uri Blass
Date: 21:24:31 12/24/04
Go up one level in this thread
On December 24, 2004 at 18:25:40, Uri Zlatnik wrote: >On December 24, 2004 at 14:17:36, Uri Blass wrote: > >>On December 24, 2004 at 12:52:55, Pallav Nawani wrote: >> >>>On December 23, 2004 at 14:03:34, Uri Blass wrote: >>> >>>>On December 23, 2004 at 13:12:45, Pallav Nawani wrote: >>>> >>>>>On December 23, 2004 at 06:25:20, Uri Zlatnik wrote: >>>>> >>>>>>How is the search extension of a software improved? Does this have to do with >>>>>>alpha-beta pruning methods? >>>>> >>>>>I am not sure what you mean here, so I'll pass this one. >>>>> >>>>>>For example CM 10th edition (the King engine) has longer search extension than >>>>>>Fritz 8 but it doesn't always find the best move. >>>>> >>>>>Search extensions are mainy good for tactical moves. If a positional move is the >>>>>best one, then evaluation is also of importance. Also, no engine can always find >>>>>the best move! >>>> >>>>The position that Uri Zlatnik posted was only about tactics and not about >>>>positional moves. >>>> >>>>Uri >>> >>>Well, maybe he was talking about some tactical position in some other thread, >>>but I haven't read that one, and he did not specify any position here. >> >>He talked about tactical position in the following thread >> >>http://www.talkchess.com/forums/1/message.html?402041 >> >>He claimed that it is a positional problem but when you look at the position it >>is clearly about tactics and not about positional evaluation. >> >>Uri > >True the variant is mostly tactical but some basic understanding of the pawn >structures is also required for this. > >The problem with chess softwares is that they do not play a move until the full >variant is calculated. The problem is that some variants might even be as long >as 15 moves (30 plies). 30 plies is no problem for programs with the right extensions. The problem is not having the right extensions. I guess singular extensions to help here. Deep Sjeng has singular extensions so it may be interesting to try it. Uri
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