Author: Frank Phillips
Date: 03:27:01 11/10/01
Go up one level in this thread
On November 09, 2001 at 18:27:05, Tony Werten wrote: >On November 09, 2001 at 14:07:57, Robert Hyatt wrote: > >>On November 09, 2001 at 09:44:14, Tony Werten wrote: >> >>>On November 09, 2001 at 09:40:29, Robert Hyatt wrote: >>> >>>>On November 09, 2001 at 02:16:49, Tony Werten wrote: >>>> >>>>>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 Is there any way to do this with Nalimov ETGBs under Linux? My search often dies with table access - 21knps from several hundred thousand. I try to convince myself that the perfect information is worth the penalty on average. Frank
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