Author: James T. Walker
Date: 06:21:23 04/03/04
Go up one level in this thread
On April 02, 2004 at 23:22:20, Robert Hyatt wrote: >On April 02, 2004 at 18:17:23, Uri Blass wrote: > >>On April 02, 2004 at 17:56:58, Robert Hyatt wrote: >> >>>On April 02, 2004 at 16:22:19, Jonas Bylund wrote: >>> >>>>Thank you very much for your detailed answers! >>>> >>>>When you say Diep already runs in windows mode, does that mean that it runs DOS >>>>or "real" windows mode? (sorry about not being clear on that in my original >>>>post) >>>> >>>>10GB for all the 3+4+5+6 tb's would be a HUGE success as would 20GB of course! >>> >>>It is also "vaporware". 3-4-5-6 tables will _not_ fit into 10 gigabytes. >> >>Yes but it is possible that tables that are enough to play 3-4-5-6 perfectly may >>fit 10 gigabytes. >> >>Suppose that you have tables that have only 1/32 of the information in the >>original 6-piece tables(it has information about exact distance to mate only if >>the index of the position is divisible by 32). > >Do the math. Current tables will likely go well over 1.5 terabytes. Shrink to >10 gigabytes means well over 2 orders of magnitude reduction. If the 6's fit in >1.5 which is not yet a given. > >> >>You can still use them in 1/32 of the positions in case that the index of the >>position is in the table. >> >>In case that the index of the position is not divisible by 32 you can search >>forward and in order to check if the index of the position is divisble by 32 you >>do not need to look at the table. >> >>Now the question is if programs who use the smaller tables can practically play >>6-piece positions perfectly or cannot do it. >> >>Uri > >You reduce a single position to 1.6 bits from 8-16 bits. A reduction of 10 at >best. You are now down to 150 gigabytes if you are lucky. Reduce it further >and there is information loss. I can't deal with a group of positions that >might be mate in anything from 1 to 32. I'll bet $100 right now we never see the 3-7 man tablebases in a 10G format which actually work. Does anyone here actually know this guy? For several years now I have read his post and suspected he is a heavy drinker. If that's not the case then he really has no excuse for his nonsense.
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