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

Author: Vincent Lejeune

Date: 00:52:22 03/02/06

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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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