Author: Stuart Cracraft
Date: 06:57:37 10/09/04
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On October 08, 2004 at 19:43:46, Jan K. wrote: >On October 08, 2004 at 19:24:08, David B Weller wrote: > >>Hi Stuart, >> >>Just working this thru 'out loud' ... >> >>Eg., >> >>alpha = -30 beta = +50 depth = d >> >>so -beta, -beta+1 = -50, -49 >> >>which gives new alpha = -50 and beta = -49 and depth = d-1 >> >>now if one of the moves leads to a forced mate we fail high and return MATE-n >> >>which is negated to -MATE+n >> >>so, no, the 'null-window' search WILL return mate scores just fine. >> > >this will work only if you return values outside (alfa,beta) bounds....as far as >I remember he doesn't do that, in case of a fail high he returns beta instead of >MATE-n > >>-David I return(value).
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