Author: Uri Blass
Date: 07:57:34 11/25/02
Go up one level in this thread
On November 25, 2002 at 10:50:52, Terry McCracken wrote: >On November 25, 2002 at 02:22:25, Uri Blass wrote: > >>On November 23, 2002 at 19:16:23, Jay Hysenbeg wrote: >> >>>On November 23, 2002 at 08:17:02, Terry McCracken wrote: >>> >>>>On November 23, 2002 at 00:32:08, Robert Hyatt wrote: >>>> >>>>>On November 23, 2002 at 00:13:32, Terry McCracken wrote: >>>>> >>>>>>On November 22, 2002 at 23:45:01, Jay Hysenbeg wrote: >>>>>> >>>>>>>[D]8/4p3/4Q3/8/8/k1p3PP/1q3P1K/8 w - - 0 1 >>>>>>>wKh2,Qe6,Pf2,g3,h3/bKa3,Qb2,Pc3,e7 >>>>>>> >>>>>>>is this a problem with my deepfritz7 or does this happen with your df7 too. mine >>>>>>>fails to see that Qxe7 is a loosing line >>>>> >>>>> >>>>>Is it certain Qe7 loses? All I can see is a long series of checks and I don't >>>>>see how black can find a safe haven from them to promote the pawn... >>>>> >>>>>I let Crafty run a while and it says 0.00... >>>> >>>> >>>>Bob White can't lose, I just inserted the [D] to look at the position. >>>> >>>>It looked totally uninteresting. >>>> >>>>Terry >>>chesstiger 15/14 and gambit tiger both see that Qxe7 is losing for white score >>>jumps by 5 pawns >> >>It means that you should complain about Tiger and not about Fritz. >> >>The fact that the tigers show a winning score for black suggest that they >>have a bug >>Even after Qxe7 Ka2 Yace can see only 0.00 after an hour. >> >>[D]8/4Q3/8/8/8/2p3PP/kq3P1K/8 w - - 0 1 >> >>Analysis by Yace 0.99.56: >> >>2.Qe6+ Kb1 3.Qe4+ c2 4.Kg1 Qc3 5.Qg6 Kb2 6.Qb6+ Ka2 7.Qa6+ Kb1 8.Qg6 Kb2 9.Qb6+ >>Ka2 10.Qa6+ Kb1 11.Qg6 >> = (0.00) Depth: 17 00:56:18 975565kN >> >>(blass, tel-aviv 25.11.2002) >> >>I do not say that 0.00 is the right score but evaluating the position as +5 for >>black is not logical. >> >>I guess that christophe is going to fix that bug in tiger16. >> >>Uri > >It's not a bug!! It's Correct! It must be a bug because even if black is winning programs cannot see it immediately. If yace cannot see advantage for black after a long time then it means that the win (in case that it exists is very deep) Better pruning rules may do tiger faster in finding tactics but not more than 1000 times faster. Uri
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