Author: Christophe Theron
Date: 10:50:33 03/15/02
Go up one level in this thread
On March 15, 2002 at 02:38:05, stuart taylor wrote:
>On March 14, 2002 at 08:03:23, Gian-Carlo Pascutto wrote:
>
>>On March 14, 2002 at 07:54:14, stuart taylor wrote:
>>
>>>I've lost contact with all information, since I went away 4 months ago. I've now
>>>been back two weeks, but can't see anything concrete.
>>>Shredder 6.0, Fritz 7.0 look like they are quite compatible with the recent
>>>Tigers, but not better. Deep Fritz looks a little below the top now, but only
>>>slightly.
>>>When will there be something clear?!
>>>So Fritz, Shredder and Tigers are about equal top now?
>>>
>>>What's in plan now? anything which might break away from the pack?
>>>
>>>I'm sorry to ask these obvious questions, but I simply can't see what cokking at
>>>the momment. Results and reports which are posted I often can't understand.
>>>S.Taylor
>>
>>I think a lot of people are anxious to see the next Tiger, but
>>Christophe is refusing to give any expected arrival dates.
>>
>>It'll be interesting to see how Fritz 7 does in the next SSDF
>>list. I would expect it to be a bit (say 20-30 elo) stronger
>>than the ChessTigers, but that could be totally off too.
>>
>>--
>>GCP
>
>I suppose what we really want to see is Fritz 8.0, as Mr. Morsch was explaining,
>that Fritz 7.0 has much more knowledge, but speed got left behind, which he will
>correct in Fritz 8.0.
>So if Fritz 7.0 is even now the top of a comprehensive rating list like ssdf,
>then fritz 8.0 would REALY be the ideal program.
>Speed within the software itself sometimes seems to be more effective than
>merely multipliyng Mhz,Ghz, with the hardware, although I'm not familiar with
>all the technical workings of it. That's just my observation.
>If only this can be done right now!
>
>Christophe, can you just hint something about what's going on with your
>programs?
>I don't know if you have said anything during the last 4 months!
>S.Taylor
>S.Taylor
Well I'm glad that you ask. Usually people just ask about the release date of
the program, without apparent interest for what will be in it.
What's going on with Tiger since version 14.0 is that unlike the previous years
I have worked a lot of the EVALUATION of the program. I have tried to work on
evaluation holes (mising knowledge about positional features) and tried to fill
these holes with good chess knowledge.
For example there is much more endgame evaluation in Tiger 15. Also better
evaluation of the bishop pair (it took approximately 2 months of extensive
research).
I have worked on search algorithms less than the previous years because as I
said above I focused on the evaluation function. However Tiger15's search is
already better than Tiger14's. I'm getting a much better search depth in the
endgame for example, and many selection holes have been fixed. I also get better
results when mates combinations start to appear on the board.
Overall I have the feeling that Chess Tiger 15 will not be much better than CT14
in fast games, but that the difference will be clearly seen at long time
controls because of better stability (reliability) of the evaluation and less
selection holes.
Christophe
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