Author: rasjid chan
Date: 12:32:56 08/27/05
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On August 27, 2005 at 11:20:28, Tord Romstad wrote: >On August 27, 2005 at 11:16:42, Daniel Shawul wrote: > >> If null move fails high at pv node(position is too good to search further), >>will the pv not be shorter? ofcourse in this case there will be a fail/low at >>the root , but the pv will still be short. If you want to have full long pvs >>always (even in fail highs/lows at root), you have to either disable your >>prunings at pv nodes Or use plain -INF,INF window which will give the same >>effect as the former. > >I'm sorry, as usual I forgot about aspiration windows. Aspiration windows >have never worked for me, and I tend to forget that most other people use >them. > >Tord I cannot press this nullmove,pruning issue of Daniel as I may not actually understand what it is all about. Offhand(ie possibly wrong),say the second move improves on the first. I cannot understand how nullmove, pruning, etc. affect pv or its length, etc . They are meant to improve search, ie getting "this" new pv faster through pruning and eliminating nodes drastically with nullmove. It is not like they give a different search result. I will think again when it is the time. Rasjid
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