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Subject: Re: SmarThink-Movei

Author: Uri Blass

Date: 10:31:58 11/01/05

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On November 01, 2005 at 12:52:29, CrayBlitz wrote:

>
>Hi everyone!.
> Already, there was 19 games in match between SmarThink (323) with very
>aggressive settings (100/100/160) and Movei 317. Time control:like Championship
>of the World in 1985 (150'/40+60'/16+60'/16).ST used own book from Sergei
>Markoff, but Movei played with Perfect v.7.
> Well 100/100/160 bad settings(i have understood now) for ST,but Movei did not
>use TB. Each engine used hash 64 mb
>
>classic 1 2005 (P4 2530)
>
>                          1234567890123456789
>1   SmarThink 1.00 (323)  ½0½½00½½1½½1½01½½11 10.0/19
>2   movei 317             ½1½½11½½0½½0½10½½00  9.0/19
>
>movei 317 seems very strong at classical time control and I have no explanations
>its result on http://wbec-ridderkerk.nl/index.html......

Thanks for your opinion

I am not sure at all if 317 is an improvement relative to previous version and
one of the possible reasons for the bad result is some bad learning that push it
after some losses to use uncommon lines like 1.b3 or 1.d4 c5(the fact that it
could beat Quark 4-0 with these bad lines encourag it to repeat these lines in
later games and later after losing with b3 it started to try 1.b4 against ufim
and got 2 draws).


I also discovered some bug in my pruning in 317 but unfortunately first tries to
fix the bug made it weaker in test suites and I even did not try it in games.
I am not sure if the latest fix is better but I kept it.
another difference between 325 is that I added pruning in the qsearch based on
SEE that do it slightly faster and probably slightly better.

I did not touch the evaluation of 317 in the latest version that compete in the
promotion tournament.

result after 54 games at 3 minutes/40 moves on A3000 was 29-25 for 325 against
317(of course it proves nothing but I have no computer time to use for testing
because I prefer to use computer time for other things like correspondence
games).

Note that I think to rewrite movei but I decided to try to make some improvement
before the promotion tournament.

Uri



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