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Subject: Re: endgame blunder by DeepFritz7

Author: Terry McCracken

Date: 08:10:48 11/25/02

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On November 25, 2002 at 10:57:34, Uri Blass wrote:

>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

Uri Figure it out...how did you win those corr. championships?? Egad I'd CRUSH
YOU!



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