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Subject: Re: Normal behavior on depth Ply settings forTiger14 ?

Author: Uri Blass

Date: 17:01:28 09/27/01

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On September 27, 2001 at 18:00:39, Jorge wrote:

>I was using Depth PLY 10 setting for ChessTiger14 when playing against CM8000.
>At some point in the game Tiger finds Mate in 8 moves, however every time
>Tiger's turn to move from then on, it took longer and longer to respond. When it
>came within Mate in 3 moves, it took over 40 minutes before I Forced the rest of
>the moves for Tiger.
>
>I am no expert in PLY search, but this does not appear to be normal (at least
>Fritz and Hiarcs do not behave this way). Has this happened to anyone else?
>
>jorge

yes
it happens to me also in few of my ply games between Deep Fritz and Tiger14(not
more than 40 minutes for mate in 3 but certainly more than 3 minutes for mate
in2 at depth 9).

Fortunately Deep Fritz often resigns when tiger gets a winning position so it
does not have to suffer for a long time.

Tiger also does not behave in this way in most of the cases but there are cases
when it behaves in this way.

I did not waste a lot of time about ply matches in the last monthes.
I started the nunn2 match at 13 plies for every program and the result between
Tiger14 and Deep Fritz is
8-6 for tiger14.

Note that at this level games on PIII850 usually take few hours.
Thr longest game was adjudicated after more than 10 hours as a win for tiger14
(tiger saw a mate in 11 and Deep Fritz saw 12.59 pawns against itself after
Tiger's move)

Times in that game were tiger14 5:54:25 Deep Fritz 4:42:56

The biggest time that tiger calculated for one move in that game was 1:53:02
The biggest time that Fritz calculated for one move in that game was 32:14

Uri



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