Author: Laurence Chen
Date: 05:26:07 12/05/00
Go up one level in this thread
On December 05, 2000 at 08:16:22, Uri Blass wrote: >On December 05, 2000 at 08:00:16, Laurence Chen wrote: > >>On December 05, 2000 at 04:29:46, Terry Ripple wrote: >> >>>On December 05, 2000 at 00:40:00, Uri Blass wrote: >>> >>>>On December 04, 2000 at 22:10:36, Laurence Chen wrote: >>>> >>>>>On December 04, 2000 at 17:48:10, Uri Blass wrote: >>>>> >>>>>>These positions are from games of shredder5 that Chris Taylor posted. >>>>>> >>>>>>[D]2rqrb2/3n1ppk/b2p3p/1ppPpN2/p3P1P1/P1P2QR1/1PB2PP1/R1B3K1 b - - 0 1 >>>>>> >>>>>>In this position Shredder5 played f6 and evaluated the position as 0.00 >>>>>> >>>>>>It is not the only case of 0.00 evaluations of lost positions of shredder. >>>>>> >>>>>>[D]2r2bk1/B6p/1p4p1/3Pp1q1/Q1n1P3/8/P3N1PP/R5K1 w - - 0 1 >>>>>> >>>>>>Here Shredder5 also played Qd7 and evaluated the position as 0.00 >>>>>>23.Qd7 0.00/11 Bc5+ 24.Kh1 0.00/12 >>>>>> >>>>>> >>>>>>[D]2rrn1k1/pp1b1pp1/1n1q4/3p1PPN/3P3R/1PNB4/P1Q2K2/6R1 b - - 0 1 >>>>>> >>>>>>Here shredder5 evaluated the position as 0.06 pawn against itself and played >>>>>>27...Qc6. >>>>>> >>>>>>The point of this post is not to attack Shredder that did very good result and >>>>>>won the matches against the tigers but only to show that all programs and not >>>>>>only Fritz have positions in the middle game that they are wrong when they >>>>>>evaluate the positions as a draw. >>>>>> >>>>>>Uri >>>>>Uri just because a chess engine gives an evaluation of 0.00 does not necessary >>>>>mean that it is a drawn position. >>>> >>>>I know. >>>>The point is that Thorsten attacked Fritz because Fritz showed 0.00 in middle >>>>game positions that were certainly not a draw. >>>>My examples were to demonstrate thorsten that this behaviour is also of programs >>>>like Shredder5 and not only of Fritz and there is no justification to call fritz >>>>stupid only because of the fact that there are positions that it does not >>>>understand like every program. >>>> >>>>Uri >>>-------------- >>>An analysis of 0.00 in the middle game just means that both sides have equal >>>chances to win from that position at that very moment! >>> >>>Terry >>I agree with you Terry. > >Did you look at the positions? >Do you think that the sides have equal chances? > >The point of Thorsten Czub in his posts some weeks ago was that Fritz's problem >was always that it evaluated 0.00 when it is easy to see that both sides do not >have equal chances and I remember that he talked about a possible future >situation when future fritz shows 0.00 whenfuture shresser understands what is >going on. > >I think that wrong 0.00 happens to every program. > >Uri Yes, I agree with you that 0.00 mis-evaluation happens to all chess programs, that's why I said one should not believe the evaluation of a chess engine completely, all chess engines suffer from Horizon Vision, and that can be the reason of mis-evaluation of the posiion, however, once the engine plays the actual move it will change its evaluation. That's why when I use a chess engine to evaluate positions, I will make the suggest move and check to see if the chess engine changes its evaluation. Chess engines are just tools, and if one wants to misuse then, than there's nothing one can do. The blind will lead the blind and they both shall fall into the ditch. Regards, Laurence
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