Author: blass uri
Date: 00:09:15 01/06/99
Go up one level in this thread
On January 05, 1999 at 22:24:38, Enrique Irazoqui wrote: >On January 05, 1999 at 20:55:11, Matthew Herman wrote: > >>On January 05, 1999 at 17:33:37, Enrique Irazoqui wrote: >> >>>On January 05, 1999 at 16:34:27, blass uri wrote: >>> >>>>This is the position from game 13 of enrique's games: >>>>8/8/2k3P1/p5r1/K7/8/2B5/8 w - - 0 1 >>>> >>>>black last move was kc5-c6 >>>> >>>>and my Junior5 prefers 79.Bd3 at depth 20 and at bigger depthes >>>> >>>>In enrique's games Junior5 chose 79.Bb3 with evaluation -1.12 >>>>and my Junior5 gives 79.Bd3 with evaluation -0.xx at depth 20 and at bigger >>>>depthes >>>> >>>>What is the reason for this >>>> >>>>Is it a bug in the Autoplayer or another reason? >>> >>>Amir can answer better than me. I don't know why a given program plays a given >>>move at a given moment. Right now I can't check this out because I would have to >>>stop playing the remaining matches. Once the tournament will end, in about 2 >>>weeks, I'll be more than glad to analize this position with J5. >>> >>>>Another problem is that games are adjudicated too early >>>> >>>>game 146 between tiger11.7.5 and Rebel10 was adjudicated as a draw in the >>>>following position >>>> >>>>8/7k/3R4/7P/6K1/4b3/8/8 w - - 0 1 >>>> >>>>Is it a draw by tablebases? >>> >>>Tiger and Rebel don't use tablebases. I adjudicated this game because no >>>progress was being made. Again, I can replay from this position when the >>>tournament will be finished. >>> >>>Enrique >>> >>>>I think that even if the result is positive the programs should play it because >>>>black may do a mistake. >>>> >>>>The fact that the programs see no plan to win does not prove that it will be a >>>>draw. >>>> >>>>I saw cases when programs succeed in losing dead draw positions. >>>> >>>>Uri >> >>The position 8/7k/3R4/7P/6K1/4b3/8/8 w - - 0 1 between Tiger and Rebel10 leads >>to a won position in 11 moves as reported by the ken thompson egtb. >> >>Tiger might or might not find it but there is a definite win. > >Of course it's a win, but the question is that Tiger won't find it. Take a look >at the moves before and you'll see that it doesn't know how to proceed. After >the tournament is finished I'll replay the game from this position. > >Enrique It may after many moves to push a pawn to avoid repetition or to avoid the 50 move rule and find the win by this way. I cannot be sure if tiger finds it and the only way to know is to replay the game from the same position with the same history moves. This is not the only game when I am not sure if the result is a draw. Uri Uri
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