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Subject: Re: Huge Bug in Fritz 9 (Engine)

Author: chandler yergin

Date: 23:37:03 10/18/05

Go up one level in this thread


On October 18, 2005 at 16:52:25, Rick Hagen wrote:

>On October 18, 2005 at 16:34:53, Rick Hagen wrote:
>
>>On October 18, 2005 at 16:29:07, chandler yergin wrote:
>>
>>>On October 18, 2005 at 16:24:25, Rick Hagen wrote:
>>>
>>>>On October 18, 2005 at 16:15:01, chandler yergin wrote:
>>>>
>>>>>  Of course no good probram or bad program would choose that move.
>>>>>Ne5 is 4th choice. Only if that was the PV the engine was lookng at when the
>>>>>time allocation software made it move.
>>>>
>>>>The problem is that in MultiPV it_will_change its first move to Kg8 after a
>>>>while... but its eval is almost the same to Ne5! (-0.4x something)
>>>
>>>No it's not.. let the engine run for a few seconds.
>>
>>I let it run for 20 seconds.
>>Should be time enough to find it gives a piece away no?
>>Maybe I should run it for 1 hour?
>>
>>But I will run it in MultiPV mode untill it sees a clear difference, and I will
>>post the time okay?
>>
>>Rick
>
>After 13(!) minutes:
>P4 3.0Ghz
>HT=128MB
>TBs off

Activate tb and run PV

>
>New game, Blitz:5' Netherlands
>1n1r3k/1p1n4/2p5/8/3B4/8/4K3/R7 b - - 0 1
>
>Analysis by Fritz 9:
>
>1. ³ (-0.48): 1...Ne5 2.Bxe5+ Kh7 3.Ra7 Nd7 4.Rxb7 Kg6 5.Bd4 Nf6 6.Bxf6 Kxf6
>2. ³ (-0.48): 1...Kg8 2.Rg1+ Kf7 3.Rf1+ Ke6 4.Rb1 b5 5.Ba1 Ne5 6.Rb3 Nd3 7.Rc3
>c5 8.Ke3 c4
>3. ³ (-0.46): 1...Kh7 2.Bc3 b5 3.Rb1 Kg6 4.Kd2 Nf6+ 5.Kc2 Nd5 6.Rg1+ Kf5 7.Be1
>Ne3+ 8.Kb3 Rd3+ 9.Kb2

.

>
>Maybe I should give it a day to see something isn't okay in its eval...

 it sees something we don't?
>Or you're in denial?



>Or you're just trolling?
>
>Rick
>(will email chessbase about this bug)

They have On-Line Support, that may give quick results.
You get to chat with a real person.
;)



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