Stockfish 9 released

   		Free Internet Chess Games Server

Install FICGS apps
play chess online


Game result  (chess)


D. Jabot, 2169
M. Eldridge, 2403

1/2-1/2

See game 107815




 Hot news
 Discussions
 Files search
 Social network



Go Discussions

                                          
Forum

Stockfish 9 released


Back to forum


Thibault de Vassal    (2018-02-15)
Stockfish 9 released

It seems that Stockfish 9 is now available... Did anyone test it already?

http://stockfishchess.org/download/


Any improvement "noticed"? (seems hard to notice anything anymore :))

We'll see what rating it reaches on CEGT lists...


Garvin Gray    (2018-02-16 01:25:26)
Stockfish 9 released

Probably a bit early to ask if any genuine improvements are noticeable, since its just been released :)

One comment that I do remember from the recent Computer World Champs, where Houdini and Komodo made the finals, and Stockfish 8 missed out by a whisker, was that each of the programmers said that Stockfish did not convert some positions because it did not have as high a contempt factor as Houdini and Komodo.

So it is likely that for Stockfish 9, this is an area that the programmers have worked on.


Kym Farnik    (2018-02-16 09:21:20)
Stockfish 9 released

FYI Development builds now have dynamic contempt.

Author: Stefano Cardanobile
Date: Fri Feb 9 19:07:19 2018 +0100
Timestamp: 1518199639

Introduce dynamic contempt

Make contempt dependent on the current score of the root position.

The idea is that we now use a linear formula like the following to decide
on the contempt to use during a search :

contempt = x + y * eval

where x is the base contempt set by the user in the "Contempt" UCI option,
and y * eval is the dynamic part which adapts itself to the estimation of
the evaluation of the root position returned by the search. In this patch,
we use x = 18 centipawns by default, and the y * eval correction can go
from -20 centipawns if the root eval is less than -2.0 pawns, up to +20
centipawns when the root eval is more than 2.0 pawns.

To summarize, the new contempt goes from -0.02 to 0.38 pawns, depending if
Stockfish is losing or winning, with an average value of 0.18 pawns by default.








 		 

Message



Chat


 

August 19, 2018

 FICGS is also a social network including seo forums, a hot news & buzz blog, a free web directory and discussion forums to meet people from all over the world. Discuss the last events, improve your search engines optimization, submit your website, share your interests...


Feel free to link to FICGS chess server, register & win Epoints :






FICGS Go server, weiqi baduk banner facebook      
Correspondence chess

World championship

Play chess games

Go (weiqi, baduk)

Advanced chess

Play big chess

Chess trainer apk

Rated tournaments

Poker texas hold'em

Fischer random chess

       FICGS correspondence chess banner facebook