Author: Stuart Cracraft
Date: 09:20:18 10/01/04
Go up one level in this thread
On October 01, 2004 at 08:58:58, Uri Blass wrote: >On October 01, 2004 at 08:00:27, Ross Boyd wrote: > >>On October 01, 2004 at 06:46:00, Uri Blass wrote: >> >>>On October 01, 2004 at 04:23:24, Ross Boyd wrote: >>> >>>>On October 01, 2004 at 02:27:59, Uri Blass wrote: >>>> >>>>>On September 30, 2004 at 19:40:30, Ross Boyd wrote: >>>>> >>>>><snipped> >>>>>>BTW, I'd suggest toning down your recapture extensions somewhat. I don't allow >>>>>>recap extensions unless they occur in the last 3 ply of the main search. The >>>>>>point is there is no point in extending recaps at shallow depths because the >>>>>>tree simply explodes. You may have been using over-aggressive recap extensions >>>>>>to 'compensate' for the lack of other key extensions. >>>>> >>>>>It seems to me that you mean to something else. >>>>> >>>>>You say that there is no point in extending recaps at shallow depth but based on >>>>>your words I understand that you allow recapture extensions only at shallow >>>>>depth(only in the last 3 plies of the main search). >>>>> >>>>>Uri >>> >>> >>>I see no response in your reply. >>> >>>I will explain again the problem. >>>Here is again your sentence >>>"I don't allow >>>recap extensions unless they occur in the last 3 ply of the main search." >>> >>>unless is if not >>> >>>You do not allow recapture extensions if they do not occur in the last 3 plies. >>>In other words you allow recapture extensions only in the last 3 plies and the >>>last 3 plies are shallow depth depth<=3 based on my understanding. >>> >>>Uri >> >>Hi Uri, >> >>This is strange. I mistakenly hit enter before replying, hence the blank reply. >>And then I replied again but somehow the reply is not displayed. >> >>Anyway, you are right, I meant to say that extending recaps is useful only near >>the tips ie. last 3 ply. Close to the root recapture extensions expand the tree >>for no good reason. That's all I was trying to say. >> >>You have a sharp eye for detail. :-) >> >>Best wishes, >> >>Ross > >I do not agree about it and there is a good reason to extend recaptures near the >root when you often search logical lines and not near the leaves when you more >often have illogical lines so there is a good logical reason to ti extend >recaptures near the root. > >recaptures also simplify the position so you may be able to search to depth 9 >after recapture faster than many searchs that you do to depth 8 after quiet >moves when you will not be able to search to depth 2 after recapture faster than >searching to depth 1 after quiet moves. > >Uri Then Uri do you suggest to recapture only if depth > N and not search recapture if depth <= N or won't you go that far? What does movei do and why do you call it movei? A Move Instruction? Stuart
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