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Subject: Re: Unusual Mate in 3 -> Hiarcs 10 have the same bug

Author: Andreas Guettinger

Date: 13:20:44 03/02/06

Go up one level in this thread


On March 02, 2006 at 04:07:35, Andreas Guettinger wrote:

>On March 02, 2006 at 03:52:22, Vincent Lejeune wrote:
>
>Maybe the interface is doing that because I couldn't verify these findings with
>the Mac version of Hiarcs10:
>
>+mate 3 62/1 00:00:00 4557 273420 1. Rg8 Rxg8 2. fxg8=Q Bxg8
>
>regards
>Andy
>
>
>
>>
>>H10 don't find the mate in 3 and when I play Rg8+ on the board H10 thinks it's
>>draw
>>
>>Analysis by Hiarcs 10:
>>...
>>1...Txg8 2.Cxg8 Fxg8 3.f8D
>>  =  (0.00)   Profondeur: 27/38   00:00:01  1281kN
>>1...Txg8 2.Cxg8 Fxg8 3.f8D
>>  =  (0.00)   Profondeur: 28/41   00:00:04  3325kN
>>1...Txg8 2.Cxg8 Fxg8 3.f8D
>>  =  (0.00)   Profondeur: 29/41   00:00:05  4098kN
>>1...Txg8 2.Cxg8 Fxg8 3.f8D
>>  =  (0.00)   Profondeur: 30/42   00:00:11  7980kN
>>
>>
>>On March 02, 2006 at 00:26:08, Charles Roberson wrote:
>>
>>>
>>>  Came across this position by accident browsing chess club web sites.
>>>  It comes from the Duke University Chess Club. The position is
>>>  1r5k/4NP1b/7K/8/6R1/8/8/8 w - - 0 1
>>>
>>>  Telepath found the mate in 4 but could not find the mate in 3.
>>>  After some debugging I found out why!!!
>>>
>>>  Just before the final ply in the mate in 3, Telepath announced insufficent
>>>  material which is true. But in this position you can mate with insufficient
>>>  material.
>>>
>>>  It put such a smile on my face, I had to share it.
>>>
>>>  Maybe some of you have the same logic flaw in your code.



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