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Subject: Re: Rebel's plus sign during analysis

Author: Ed Schröder

Date: 20:33:18 08/03/98

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>I mean this:

>"
>Because many people (besides playing games and analysis) also
>use a chess program for solving difficult chess positions Rebel10's
>chess engine has been improved on several points resulting in
>incredible improved solution times.

>Rebel10 when analysing a position (automatically) will activate
>a special search algorithm that is fully tactical based and will
>find key moves up to 500-1000% faster. The average performance of
>finding key moves faster is estimated at 250-300%. "

I see what you mean. The above quote has nothing to do with
playing normal games. Also there is no reference to playing
strength as you indicated.

I refer to what Fernando posted and also to one of the latest
CCC opinion polls. Through the years people started to use chess
program in another way. In the early days people (mostly)
played games against chess programs. These days 99% of people
lose all the time so the fun goes away.

So people looked for other ways to use chess programs. Based
on all the input I have received through the years (emails /
letters) I would say we have the following situation (for the
use of the engine only)...

- Play normal games (strongest settings)  10%
- Play handicapped games                  20%
- Use chess program for analysis          60%
- Use chess programs for COMP-COMP games  10%

All estimated of course, just my personal opinion.

In this respect it makes a lot of sense to improve the "analysis"
part of Rebel. The above new feature of the engine is just an
extra. People want faster solution times for tactical positions
so they get what they want. Also a new fashion is automatic EPD
analysis as EPD is becoming more and more popular. So to make
(keep) your program attractive you write new EPD features. And
so on.

- Ed -


>Jouni



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