Author: Matthew Herman
Date: 18:02:35 01/05/99
Go up one level in this thread
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 8/8/2k3P1/p5r1/K7/8/2B5/8 w - - 0 1 is also a win after 1. Bb3, Rxg6 as given by Ken Thompson's tablebases (for instance 2. Kxa5 ?? leads to mate in 15 for black (and is also found as a strong position (+5.00 after a few seconds from Fritz5.32))) After that black is either mating or wins the bishop in 30 moves ..
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