Author: blass uri
Date: 08:55:13 01/28/00
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On January 28, 2000 at 11:31:29, Amir Ban wrote: >On January 28, 2000 at 05:25:26, Shep wrote: > >>On January 27, 2000 at 10:40:05, Jari Huikari wrote: >> >>>Where you consider the position of a game changes to middle game / end game? >>> >>>opening == most pieces haven't moved yet ? / opening book not ended yet ? >>>end game == few pieces left ? >>>middle game == neither of the two above ? >> >>I suppose some programs have a more fine-grained approach to this. >>Tiger for example divides the game into several "phases" (more than 3 for sure >>:) according to the material on the board, and different evals >>(/extensions/pruning/...?) are fired off according to the phase the program is >>in. >>In the DOS version, it would show "Phase x/y"; in Rebel Tiger, the best way to >>see it is when the eval suddenly jumps from like "+1.10" to "+0.20" (or vice >>versa) after a capture has occurred. (Contrary to Fritz, this is _not_ due to >>any preprocessor oddities. :) >> > >Why isn't it like Fritz ? It sounds exactly the same. > >Amir The only difference that I can think of is that Fritz does not show phase x/y My impression is that Fritz is a root processor not only after a capture but that after a capture there may be a big change in the evaluation when after a quiet move the difference is small. I saw many cases when fritz could not reproduce the same evaluation in every depth after the opponent played the expected move and my impression is that it happens more with fritz than with Junior4.6 or Junior5. It can be because of different extensions but I believed that it was because of the fact that every move is a new phase in fritz when I understand that it is not the case with tiger. Uri
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