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Subject: Re: Becareful it might be mate !!!! 40 ........ kg6 ?????

Author: Eelco de Groot

Date: 11:36:48 10/11/03

Go up one level in this thread


On October 11, 2003 at 14:07:00, Uri Blass wrote:

>On October 11, 2003 at 13:39:13, Ed Schröder wrote:
>
>>On October 11, 2003 at 10:40:16, Nolan Denson wrote:
>>
>>>The below game was played between Rebel 12 and Crafty 1 cpu.
>>>
>>>Rebel announce a mate !! after 39. .... KG6 ????@@@@#####%%%
>>>
>>>
>>>DEUTERONOMY (2734) vs. MrPeabody (2735) --- 2003.10.11 10:12:32
>>>Rated Blitz match, initial time: 3 minutes, increment: 3 seconds
>>
>>Nolan,
>>
>>You must be playing a special style, the default setting can recognize Bh5+ as
>>the best move (34 secs) but no mate seen after 5 min (A/2000).
>>
>>Nevertheless a nice mate combination.
>>
>>My best,
>>
>>Ed
>
>Or maybe when he says "announce a mate after 39...Kg6" he does not mean in the
>immediate move after it.
>
>I see that rebel used 13 seconds for Qf2 and I wonder if Rebel continue to
>search even after finding mates only to find a shorter mate.
>
>Uri

It was a bugreport. When the score goes up or down a certain treshold something
seems to be going wrong in a lot of cases and Rebel produces a bad move, like in
this case 39...Kg6

In ERT the move would probably show up with a 0,00 score. A mate anouncement is
optional. You never know, if it isn't just a failure in the Winboard protocol
implementation in Rebel but rather something in the engine this might be
something that acted up in old Rebel autoplayer games, so I hope Ed and Lex can
find what is causing it. On the other hand, it wasn't present in the Prerelease
version so that theory isn't very likely.

 Eelco

 Eelco



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