Author: Enrique Irazoqui
Date: 03:30:44 01/06/99
Go up one level in this thread
On January 06, 1999 at 03:09:15, blass uri wrote: > >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. Alright. Please, try to keep these unclear positions and I'll play them when I will be done with my tournament. By the way, I just received confirmation that Fritz 5A (autoplayer) plays that horrible 50.Ra2 move you mentioned the other day. No hardware problems, no software problems either. It just plays it... Enrique >Uri > >Uri
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