Author: Tijs van Dam
Date: 06:36:00 01/26/00
Go up one level in this thread
On January 26, 2000 at 09:29:27, Robert Hyatt wrote: >On January 26, 2000 at 08:08:01, Tijs van Dam wrote: > >OK: The normal window failed low. I am now going to do a search that I >_know_ can't fail low, because alpha=-INFINITY... > > > >> if (value <= alpha) { >> value=ABSearch(tree,-MATE,beta,wtm,depth-2*INCPLY,ply,DO_NULL); > >here the following line is missing: > > tree->hash_move[ply]=tree->pv[ply-1].path[ply]; > >This was deleted somewhere along the way. However it isn't really >important... this case is _very_ rare.... a search to depth=N will produce >a score of X, A search to depth=N-something only rarely fails low and breaks >this... > I see. But why did you keep the line for the research in? It is useless now, isn't it?
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