Stockfish 11

Discussion of anything and everything relating to chess playing software and machines.

Moderators: hgm, Rebel, chrisw

snicolet
Posts: 4
Joined: Thu Jul 05, 2018 10:04 pm
Full name: Stephane NICOLET

Stockfish 11

Post by snicolet »

It is our pleasure to release Stockfish 11 to our fans and supporters.

Downloads are freely available at http://stockfishchess.org/download/

This version 11 of Stockfish is 50 Elo stronger than the last version, and
150 Elo stronger than the version which famously lost a match to AlphaZero
two years ago. This makes Stockfish the strongest chess engine running on
your smartphone or normal desktop PC, and we estimate that on a modern four
cores CPU, Stockfish 11 could give 1:1000 time odds to the human chess champion
having classical time control, and be on par with him. More specific data,
including nice cumulative curves for the progression of Stockfish strength
over the last seven years, can be found on [our progression page][1], at
[Stefan Pohl site][2] or at [NextChessMove][3].

In October 2019 Stockfish has regained its crown in the TCEC competition,
beating in the superfinal of season 16 an evolution of the neural-network
engine Leela that had won the previous season. This clash of style between an
alpha-beta and an neural-network engine produced spectacular chess as always,
with Stockfish [emerging victorious this time][0].

Compared to Stockfish 10, we have made hundreds of improvements to the
[codebase][4], from the evaluation function (improvements in king attacks,
middlegame/endgame transitions, and many more) to the search algorithm (some
innovative coordination methods for the searching threads, better pruning of
unsound tactical lines, etc), and fixed a couple of bugs en passant.

Our testing framework [Fishtest][5] has also seen its share of improvements
to continue propelling Stockfish forward. Along with a lot of small enhancements,
Fishtest has switched to new SPRT bounds to increase the chance of catching Elo
gainers, along with a new testing book and the use of pentanomial statistics to
be more resource-efficient.

Overall the Stockfish project is an example of open-source at its best, as
its buzzing community of programmers sharing ideas and daily reviewing their
colleagues' patches proves to be an ideal form to develop innovative ideas for
chess programming, while the mathematical accuracy of the testing framework
allows us an unparalleled level of quality control for each patch we put in
the engine. If you wish, you too can help our ongoing efforts to keep improving
it, just [get involved][6] :-)

Stockfish is also special in that every chess fan, even if not a programmer,
[can easily help][7] the team to improve the engine by connecting their PC to
Fishtest and let it play some games in the background to test new patches.
Individual contributions vary from 1 to 32 cores, but this year Bojun Guo
made it a little bit special by plugging a whole data center during the whole
year: it was a vertiginous experience to see Fishtest spikes with 17466 cores
connected playing [25600 games/minute][8]. Thanks Guo!

The Stockfish team

[0]: <http://mytcecexperience.blogspot.com/20 ... 1-100.html>
[1]: <https://github.com/glinscott/fishtest/w ... sion-Tests>
[2]: <https://www.sp-cc.de/index.htm>
[3]: <https://nextchessmove.com/dev-builds>
[4]: <https://github.com/official-stockfish/Stockfish>
[5]: <https://tests.stockfishchess.org/tests>
[6]: <https://stockfishchess.org/get-involved/>
[7]: <https://github.com/glinscott/fishtest/wiki>
[8]: <https://groups.google.com/forum/?fromgr ... %5B1-25%5D>
User avatar
CMCanavessi
Posts: 1142
Joined: Thu Dec 28, 2017 4:06 pm
Location: Argentina

Re: Stockfish 11

Post by CMCanavessi »

Looks like the website is still not updated, still showing SF 10 and 11 nowhere to be found. Will just have to wait a bit :mrgreen:
Follow my tournament and some Leela gauntlets live at http://twitch.tv/ccls
BrendanJNorman
Posts: 2581
Joined: Mon Feb 08, 2016 12:43 am
Full name: Brendan J Norman

Re: Stockfish 11

Post by BrendanJNorman »

CMCanavessi wrote: Sat Jan 18, 2020 3:03 am Looks like the website is still not updated, still showing SF 10 and 11 nowhere to be found. Will just have to wait a bit :mrgreen:
Look here brother>> http://abrok.eu/stockfish/
User avatar
CMCanavessi
Posts: 1142
Joined: Thu Dec 28, 2017 4:06 pm
Location: Argentina

Re: Stockfish 11

Post by CMCanavessi »

BrendanJNorman wrote: Sat Jan 18, 2020 3:19 am
CMCanavessi wrote: Sat Jan 18, 2020 3:03 am Looks like the website is still not updated, still showing SF 10 and 11 nowhere to be found. Will just have to wait a bit :mrgreen:
Look here brother>> http://abrok.eu/stockfish/
Yeah, I know, but your average joe might not.
Follow my tournament and some Leela gauntlets live at http://twitch.tv/ccls
Nay Lin Tun
Posts: 710
Joined: Mon Jan 16, 2012 6:34 am

Re: Stockfish 11

Post by Nay Lin Tun »

Still wondering who will win in case SF vs Lc0 actually meet in TCEC S16 Final.. SF did not beat Leela in final. :twisted:
h1a8
Posts: 514
Joined: Fri Jun 04, 2010 7:23 am

Re: Stockfish 11

Post by h1a8 »

To the author and developer of Stockfish for ios
Please can you update the engine to Stockfish 11
And add 1 and 2 move analysis arrows (similar to the droidfish from Android).


Thanks.
Eduard
Posts: 1439
Joined: Sat Oct 27, 2018 12:58 am
Location: Germany
Full name: N.N.

Re: Stockfish 11

Post by Eduard »

I get the message, it is infected with a virus (modern.exe 180120).

Virus is IDP.ARES.Generic
Hai
Posts: 613
Joined: Sun Aug 04, 2013 1:19 pm

Re: Stockfish 11

Post by Hai »

h1a8 wrote: Sat Jan 18, 2020 5:14 am To the author and developer of Stockfish for ios
Please can you update the engine to Stockfish 11
Stockfish 11 is not for iOS.
For iOS, it is ASMfish and Cfish and get +50% more kn/s on iOS!!
Help is needed.

For Android, it is ARMfish.
ARMfish 11 is also released:)
Modern Times
Posts: 3601
Joined: Thu Jun 07, 2012 11:02 pm

Re: Stockfish 11

Post by Modern Times »

snicolet wrote: Sat Jan 18, 2020 1:59 am This version 11 of Stockfish is 50 Elo stronger than the last version,
I think it might be better than that on the ratings lists, but let's see. The error margins are big with a small-ish number of games, so not conclusive, but Stockfish 2019-12-10 was already about +70 Elo over Stockfish 10 at CCRL 40/15.
Geonerd
Posts: 79
Joined: Fri Mar 10, 2017 1:44 am

Re: Stockfish 11

Post by Geonerd »

Thank you! :D