Author: scott farrell
Date: 20:44:37 09/07/02
Go up one level in this thread
On September 07, 2002 at 22:51:46, Robert Hyatt wrote: >On September 07, 2002 at 02:48:10, scott farrell wrote: > >>On September 06, 2002 at 21:38:23, Robert Hyatt wrote: >>> >>>Exactly how long does it take you to find the mate if _you_ play the >>>rook move yourself? I mean you play the move and let your program search >>>the resulting position here... >>> >>>Then we can figure out if your extensions are working by seeing how >>>deep you have to go to find that mate from the white side after black >>>blows it... >> >>The results of the rook search is below. >> >>I think I found it - my extensions when there is a nullthreat (ie. when the >>nullmove returns <= -INFINITY) seemed to cause this search to go the entire >>brute force distance of 12 plies to see the mate in 6. I am caching the >>nullthreat in the hashtable as well. > > >Here is a big question. How are you storing "depth" in the hash table? > >IE you aren't first adjusting for extensions and then storing that??? If >so that's a bug... > I am storing with depth as realdepth+extensions. I am using fractional depths, and store the depth including the fractional part. I think that is correct
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