Author: Tony Werten
Date: 23:16:49 11/08/01
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On November 08, 2001 at 18:04:43, Robert Hyatt wrote: >On November 08, 2001 at 14:46:15, Tony Werten wrote: > >>On November 08, 2001 at 12:01:16, Robert Hyatt wrote: >> >>>On November 08, 2001 at 07:45:59, Vincent Diepeveen wrote: >>> >>>>On November 07, 2001 at 15:51:59, Robert Hyatt wrote: >>>> >>>>>On November 07, 2001 at 12:22:05, William Dozier wrote: >>>>> >>>>>>Good day to all of you, Question: Is there a killer book for black? Is there a >>>>>>book for black, so it can counter all the white moves. When does the table base >>>>>>start kicking in; in crafty? >>>>> >>>>>I doubt that there is any "killer book" for black or white, assuming your >>>>>opponent does his homework. >>>>> >>>>>tablebases start getting hit when there are around 16 pieces left on the board, >>>>>most of the time. Others might get different results of course. I have seen >>>>>hits with 20 pieces left... but not very often. >>>> >>>>With all extensions turned on i get hits from openings position >>>>already after a night of search with big hashtable. >>> >>>Overnight that is possible. I interpreted it as "during a real game". :) >> >>Depends on where you probe. I probe everywhere and have seen tablebasehits with >>30 pieces on the board in 3 minute searches. Useless but funny. >> >>Tony > > >What happens when you get into 8-10 piece endings? Does your speed die? I >did that early on and actually lost winnable games, because I slowed down so >bad the search depth was not enough to reach won positions. IE from 100K it >would drop to 1-5K... If I have a 10 ply search I will probe the first 10 ply on harddisk, for the rest I use my own tablebaseformat wich stores the 4 and 3 pieces in memory, making probing not more expensive than an evaluation. At the dutch open I set up a testposition with 6 pieces and still got 1Mn/s on a AMD 1700+ Tony
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