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Subject: Re: Is Junior's blunder against Fritz result of being significantly slower

Author: Uri Blass

Date: 21:22:33 04/30/01

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On April 30, 2001 at 23:35:47, Chessfun wrote:

>On April 29, 2001 at 23:52:52, Uri Blass wrote:
>
>>[D]3r2k1/5pp1/3qp2p/2p3P1/1rPnB2P/1p1R4/P4P2/2Q1R1K1 w - - 0 1
>>
>>Junior played gxh6 with 0.23 pawns against black
>>The logfile of Junior gives:
>>38.gxh6 -0.23/17 5:25 53 kn/s
>
>
>Nice job Uri.
>I had noticed this with Junior before, now and again it will produce
>a move that later I can't duplicate. The NPS is similarly down from what
>would be expected.
>
>There was one specifically in one of my tournament games where this happened.
>I'll have to try hunt for it.
>It is however so rare that it's hard to track it down and call it an autoplayer
>problem as it could just as easily be an engine issue.
>
>
>>You can see also that Junior was probably slowed down by a factor of more than
>>20 when it played 38.gxh6
>
>Clearly. Too bad the engine isn't available as we could look also at it's
>pv. I notice however it says depth 17 so would assume it pondered correctly.
>
>Sarah.

It did not ponder correctly based on Junior's logfile(it expected 37...h5 and
not 37...axb3) but it is still possible that the hash tables helped it to get
bigger depth because it had better order of moves.

I also doubt if depth 17 means that it had a score at depth 17.
It is possible that it jumped from depth 15 to depth 17 and had not enough time
to get a score for the move at depth 17 because of the fact that it was slower.

Uri



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