Author: Stan Arts
Date: 06:35:48 04/22/04
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>It's possible (probable) that this is an artifact of the hash table. >Gothmog *could* be grafting on large sub-trees via the TT so that >the apparent depth really is 41 etc. (I'm guessing like the rest of >us you adjust the depth of all mates retrieved from the hash table). > >Interesting anyway, like you, I wouldn't worry too much if it isn't >causing you any real problems and it's actually kinda cool. > >--tom Hi Tom and Tord Maybe Gothmog gives those values, because/if you return beta somewhere, maybe after a null-move. (So then it's not always fail-soft, and beta could be that mate in 41 value.) The same happens sometimes in my program Neurosis, that for instance has a current score of -9997 (will be mated in 2) and finds a better move with a minimum window, it can rarely happen that it gives a score first of -9996 before the research and that value is nowhere returned in the searchtree except for nullmove and returning beta, and then opening up my window say 2.50 it can rarely happen that it returns -9746 before another research, and announce it's a mate in 125 or something like that, for the same reason, but it hasn't searched a real mate in 125.. Stan
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