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Subject: Re: Interesting comp vs comp position

Author: Peter Skinner

Date: 21:44:51 07/15/03

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On July 15, 2003 at 23:18:36, Robert Hyatt wrote:

>On July 15, 2003 at 22:05:59, Peter Skinner wrote:
>
>>On July 15, 2003 at 15:21:17, Robert Hyatt wrote:
>>
>>>Here is a position reached in a game on ICC between Crafty and an
>>>unnamed opponent:
>>>
>>>[D]8/2k2p2/7p/ppPK4/6P1/P6P/8/8 w 0 1
>>>
>>
>>The above position was done by a program that obviously did not use the 5 man
>>tablebases. The only program that I can find in the ones that I have that play
>>c6 without tablebases is Tiger. All the others almost instantly go to Ke4.
>>
>>You were obviously playing a Tiger clone. Odd that it plays it though, and under
>>all versions. ( Tiger, Gambit, Gambit Agg, Gambit Sui ).
>>
>>Nothing else seems to play it. Unless you played a private engine.
>
>
>
>A program needs to know that c6 loses without having endgame tables...
>
>IE crafty sees -1.0 quickly on my laptop with tables turned off.  It goes
>better and better for black as it gets deeper..

That is what I meant. Tiger can not see that c6 loses without tablebases. Every
other program that I have tried sees the loss of c6 without the tablebases.

Therefore you must have been playing a Tiger clone on ICC. That is a reasonable
explanation.





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