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Subject: Evaluation Jumps in Gambit Tiger II and other misteries...

Author: Fernando Villegas

Date: 07:17:02 04/04/01


Hi all:
I have completed, until now, two games againts the beast, both 40 moves in 90
minutes. And both I lost after tough fight. So what: I expected that and in fact
I expect that againts almost every top program. What I go for is to get fun,
FUN.

Well, looking at the computer as he thought answers to my moves I realized some
curious facts. First, the incredible great jumps in his evaluation from one
second to another, from one ply to the next. I am talking of going from, say,
+.90 to 0.00. My guess is that behind that  there is not just a monolitic
evaluation package of code, but a system of specific modules doing the job
according to circunstances. I have seen changes in every program when going to
deeper plies, but this changes by Gambit are a lot more deep and happens very
fast.

The second thing that attracted my atention was its use of time. In one of the
games Gambit was thinking more than 15 minutes, probably a lot more -I did not
take the time accurately; I was, as always, doing three things at the same time,
including supping a glass of red wine and lessoning Frank Sinatra- and the
position I produced with my move was somewhat intriguing BUT not that
intriguing. It was as if an altoguether different code was putted in action to
reasses the position from scratch.

I do not believe Christophe is going to show his secrets here just like that,
but I wonder if he could tell us a little bit of the new techniques he is
clearly using. Of course maybe I am totally wrong....


fernando



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