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Subject: Re: Some results at fixed depth between Deep fritz and Tiger14

Author: Uri Blass

Date: 03:51:30 04/22/01

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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



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