Author: Dave Gomboc
Date: 08:13:40 09/28/01
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On September 27, 2001 at 20:01:28, Uri Blass wrote: >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 Perhaps Tiger has a mate score instability bug? Dave
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