Author: Chessfun
Date: 15:44:44 10/28/01
Go up one level in this thread
On October 28, 2001 at 15:58:16, Uri Blass wrote: >On October 28, 2001 at 13:30:12, Chessfun wrote: > >>[D]8/8/8/4b3/7k/7p/8/6K1 w - - 0 124 >> >>In this position playing a blitz game >>Gambit Tiger played 124. Kf2? then went >>on to lose on move 131 on time. >> >>Yet I have all 5 piece tablebases installed. >>If I load Gambit as with any engine my display >>reads. >> >>1 =(0.00): 1.Kh1 >>2 -+(-#10): 1.Kf1 >>3 -+(-#10): 1.Kf2 >> >>The last piece was taken on black's 87th move. >> >>Why did it not play the correct 1. Kh1. >>is it to do with tablebase depth? or cache? >> >> >>Sarah. > >If I tell Gambittiger not to use tablebases under Junior7 interface then >I get the following analysis at fixed depth 3,4 > > >Gambit Tiger 2.0 - Blass,U >8/8/8/4b3/7k/7p/8/6K1 w - - 0 1 > >Analysis by Gambit Tiger 2.0: > >1.Kf2 Bd4+ 2.Kf1 Bf2 3.Kxf2 > ³ (-0.63) Depth: 3 00:00:00 > >(Blass, Tel-aviv 28.10.2001) > > >Gambit Tiger 2.0 - Blass,U >8/8/8/4b3/7k/7p/8/6K1 w - - 0 1 > >Analysis by Gambit Tiger 2.0: > >1.Kh1 > = (0.00) Depth: 4 00:00:00, tb=3 > >(Blass, Tel-aviv 28.10.2001) > >You can see from the last analysis that tiger is using tablebases and it is not >enough to tell the interface not to use tablebases and I need also to tell the >engine not to use tablebases in the engine parameters > >I did it and I got the following information at depth 4 > >Chess Tiger 14.0 - Blass,U >8/8/8/4b3/7k/7p/8/6K1 w - - 0 1 > >Analysis by Chess Tiger 14.0: > >1.Kh1 Bh2 2.Kxh2 Kg4 > ³ (-0.63) Depth: 4 00:00:00 1kN > >(Blass, Tel-aviv 28.10.2001) > > >It seems that tiger needs depth 4 to find Kh1 if you do not tell the interface >to use tablebases. > >Unfortunately tiger probably could get only depth 3 thanks to serious time >trouble so it could not find Kh1. > >Uri Makes sense. I have seen other programs lose blitz games also that are tablebase draws. Sarah.
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.