Author: Jorge Pichard
Date: 06:50:02 04/22/01
Go up one level in this thread
On April 22, 2001 at 06:51:30, Uri Blass wrote: >On April 22, 2001 at 06:05:26, Jorge Pichard wrote: > >>On April 22, 2001 at 04:37:58, Uri Blass wrote: >> >>>These results is from the nunn match(both programs used 64 mbytes hash and most >>>of the tablebases) >>> >>>Tiger14(depth 3)-Deep Fritz(depth 3) 16.5-3.5 >>>Tiger14(depth 4)-Deep Fritz(depth 4) 7.5-12.5 >>>Tiger14(depth 5)-Deep Fritz(depth 5) 13-7 >>>Tiger14(depth 6)-Deep Fritz(depth 6) 14-6 >>>Tiger14(depth 7)-Deep Fritz(depth 7) 13.5-6.5 >>>Tiger14(depth 8)-Deep Fritz(depth 8) 10.5-9.5 >>>Tiger14(depth 9)-Deep Fritz(depth 9) 14-6 >>>Tiger14(depth 10)-Deep Fritz(depth 10) 9.5-10.5 >>> >>>Tiger14(depth 4)-Deep Fritz(depth 3) 17.5-2.5 >>>Tiger14(depth 5)-Deep Fritz(depth 4) 19-1 >>>Tiger14(depth 6)-Deep Fritz(depth 5) 18-2 >>> >>>Tiger14(depth 3)-Deep Fritz(depth 4) 6-14 >>> >>>Tiger14(depth 4)-Deep Fritz(depth 5) 8-12(this result should be 12.5-7.5 but >>>deep fritz failed to mate because of having only part of the tablebases and the >>>engines agreed to a draw in a position that the evaluation was mate against >>>tiger). >>> >>>Tiger14(depth 5)-Deep Fritz(depth 6) 7-13 >>> >>>We need more games to get rating for programs at fixed depth. >>>It will be interesting to get a nunn rating listfor chess programs at fixed >>>depth in order to find out if there is diminishing return in the nunn match. >>> >>>In the game that Deep fritz drew because of not having the right tablebases Deep >>>Fritz has a position of king and 2 pawns for king and a bishop. >>> >>>Deep Fritz had the KPP vs KB and also the KNP vs KB tablebases but had not the >>>KQP vs KB tablebases so it promoted the pawn to a knight. >>> >>>Deep Fritz did not promote the second pawn to a queen or a rook because of not >>>having the KQB vs KN or the KRB vs KN tablebases. >>> >>>Uri >> >>Why don't you play three games both at depth 21 and post the games, here at the >>CCC. I am just curious to see Deep Fritz analysis at that depth. >> >>Pichard. > >I believe that a game at depth 21 may take many years. > >There are positions when 24 hours are enough only for depth 17 and assuming >branching factor of 3 you need 81 days for depth 21. > >Uri Uri, it could be that certain programs DO_NOT reach depth 22 as easy as Gambit Tiger II, but if you observed carefully at the analysis of Gambit Tiger II, in certain position GT II was able to reach depth 22 only after a 8 hours, whereas, in other position you are correct to say that it will never reach more than deth 22, even if you let it for over 24 hours. Such as in this position: http://www.rebel.nl/gt2-web.htm I left deep Fritz analysis on for 9 hours in my computer an AMD Athlon 800 MHZ, and it only reached a depth 20, but Gambit Tiger II reached depth 22 after only 8 hours of analysis. TIME SCORE DEPTH 08:01:15.3 0.24 22 73065026000 Nd2 Na5 Rfc1 Rxc3 Nxc3 Rc8 Ba6 Ra8 Be2 Rc8 e4 Nc6 Be3 dxe4 g5 Nd5 Nxd5 exd5 Ba6 Pichard.
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.