Author: Uri Blass
Date: 08:23:19 04/22/01
Go up one level in this thread
On April 22, 2001 at 09:50:02, Jorge Pichard wrote: >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. Yes, but from my correspondence games there is at least one position when tiger needs more than 24 hours to get a score at depth 18. I cannot be sure that these positions will not happen in a game. If they happen then a game at depth 22 may take Gambittiger some years. Uri
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