Stockfish 9

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

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mcostalba
Posts: 2684
Joined: Sat Jun 14, 2008 7:17 pm

Stockfish 9

Post by mcostalba » Thu Feb 01, 2018 2:22 pm

I am pleased to announce that Stockfish 9 is out.

You can download the offical builds from here https://stockfishchess.org/download/

I would like to thank all the amazing people that made this release possible. All our testers and our developers, all the people that donate CPU time through fishtest (thank you! You are amazing) and a special thank to Daylen, our webmaster, and to the people contributing to the final optimized builds:

- BMI2: Thomas Zipproth
- POPCNT: Vah
- 64-bit: Vah
- 32-bit: Kiran Panditrao

SF 9 should improve about 45 ELO in self-play compared to SF 8, but because now we set contempt by default, we could expect something better in rating lists that use games among different engines to measure ELO.

Another visible change is the merge of the latest version of Ronald de Man Tablebases code, that is now better at detecting and reporting mate scores instead of TB scores.

Thank you again to all the people that contributed to this release: you did a great job!

mehmet karaman
Posts: 134
Joined: Tue Jan 28, 2014 7:37 am
Location: TURKEY

Re: Stockfish 9

Post by mehmet karaman » Thu Feb 01, 2018 2:51 pm

Many thanks to you and all Stockfish team for this great engine.

mcostalba
Posts: 2684
Joined: Sat Jun 14, 2008 7:17 pm

Stockfish 9

Post by mcostalba » Thu Feb 01, 2018 3:03 pm

And here is the well deserved list of contributors to this release with the number of committed patches:

Code: Select all

In total 291 changes have been merged since SF 8 corresponding to 49 files changed, 4269 insertions(+), 4201 deletions(-)

     15  Alain Savard
     1  Andrey Neporada
     1  AndyGrant
     1  Ali AlZhrani
     6  Aram Tumanian
     1  Ben Koshy
    24  Bill Henry
     1  Brian Sheppard
     2  Chris Cain
     1  Daniel Dugovic
     3  ElbertoOne
     1  Fabian Beuke
     2  Fabian Fichter
     2  FauziAkram
     2  Gian-Carlo Pascutto
     1  Goodkov Vasiliy Aleksandrovich
     1  Gontran Lemaire
     3  GuardianRM
     1  Guy Vreuls
     8  Günther Demetz
     6  Ivan Ivec
     2  Jan Ondruš
     2  Jonathan Calovski
     4  Joona Kiiski
    65  Joost VandeVondele
     8  Jörg Oster
     6  Lucas Braesch
    47  Marco Costalba
     1  Michael Byrne
     7  Michael Stembera
     1  Mira
     2  Miroslav Fontán
     1  Mohammed Li
     1  Nathan Rugg
     1  Niklas Fiekas
     1  Pasquale Pigazzini
     1 Patrick Jansen
     6  Ronald de Man
     1  Sergei Antonov
     7  Stefan Geschwentner
     7  Stefano Cardanobile
    27  Stéphane Nicolet
     1  Tom Vijlbrief
     3  Torsten Franz
     1  basepr1me
     1  erbsenzaehler
     1  loco-loco
     2  mbootsector
     1  theo77186 

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CMCanavessi
Posts: 832
Joined: Thu Dec 28, 2017 3:06 pm
Location: Argentina

Re: Stockfish 9

Post by CMCanavessi » Thu Feb 01, 2018 3:12 pm

mcostalba wrote:And here is the well deserved list of contributors to this release with the number of committed patches:

Code: Select all

In total 291 changes have been merged since SF 8 corresponding to 49 files changed, 4269 insertions(+), 4201 deletions(-)

     15  Alain Savard
     1  Andrey Neporada
     1  AndyGrant
     1  Ali AlZhrani
     6  Aram Tumanian
     1  Ben Koshy
    24  Bill Henry
     1  Brian Sheppard
     2  Chris Cain
     1  Daniel Dugovic
     3  ElbertoOne
     1  Fabian Beuke
     2  Fabian Fichter
     2  FauziAkram
     2  Gian-Carlo Pascutto
     1  Goodkov Vasiliy Aleksandrovich
     1  Gontran Lemaire
     3  GuardianRM
     1  Guy Vreuls
     8  Günther Demetz
     6  Ivan Ivec
     2  Jan Ondruš
     2  Jonathan Calovski
     4  Joona Kiiski
    65  Joost VandeVondele
     8  Jörg Oster
     6  Lucas Braesch
    47  Marco Costalba
     1  Michael Byrne
     7  Michael Stembera
     1  Mira
     2  Miroslav Fontán
     1  Mohammed Li
     1  Nathan Rugg
     1  Niklas Fiekas
     1  Pasquale Pigazzini
     1 Patrick Jansen
     6  Ronald de Man
     1  Sergei Antonov
     7  Stefan Geschwentner
     7  Stefano Cardanobile
    27  Stéphane Nicolet
     1  Tom Vijlbrief
     3  Torsten Franz
     1  basepr1me
     1  erbsenzaehler
     1  loco-loco
     2  mbootsector
     1  theo77186 
Thanx Marco and thanx to all the contributors for this great, free, open engine. Now Houdini 6 will have a serious challenger in season 2 of my tournament :D

schack
Posts: 118
Joined: Thu May 27, 2010 1:32 am
Contact:

Re: Stockfish 9

Post by schack » Thu Feb 01, 2018 3:13 pm

This is another great moment in the momentous history of Stockfish, but I wonder, Marco, why contempt was left on in analysis mode by default? And why it's always contempt from White's perspective? This makes its use for analysis rather difficult for non-technical users.

Krzysztof Grzelak
Posts: 811
Joined: Tue Jul 15, 2014 10:47 am

Re: Stockfish 9

Post by Krzysztof Grzelak » Thu Feb 01, 2018 3:15 pm

mcostalba wrote:I am pleased to announce that Stockfish 9 is out.

You can download the offical builds from here https://stockfishchess.org/download/

I would like to thank all the amazing people that made this release possible. All our testers and our developers, all the people that donate CPU time through fishtest (thank you! You are amazing) and a special thank to Daylen, our webmaster, and to the people contributing to the final optimized builds:

- BMI2: Thomas Zipproth
- POPCNT: Vah
- 64-bit: Vah
- 32-bit: Kiran Panditrao

SF 9 should improve about 45 ELO in self-play compared to SF 8, but because now we set contempt by default, we could expect something better in rating lists that use games among different engines to measure ELO.

Another visible change is the merge of the latest version of Ronald de Man Tablebases code, that is now better at detecting and reporting mate scores instead of TB scores.

Thank you again to all the people that contributed to this release: you did a great job!
This is a little bit 45 ELO Please try in the future to increase the engine at about 100 Elo some.Unfortunately, the engine with a small 45 ELO stands in place and getting worse with its development.

User avatar
CMCanavessi
Posts: 832
Joined: Thu Dec 28, 2017 3:06 pm
Location: Argentina

Re: Stockfish 9

Post by CMCanavessi » Thu Feb 01, 2018 3:17 pm

Krzysztof Grzelak wrote:
mcostalba wrote:I am pleased to announce that Stockfish 9 is out.

You can download the offical builds from here https://stockfishchess.org/download/

I would like to thank all the amazing people that made this release possible. All our testers and our developers, all the people that donate CPU time through fishtest (thank you! You are amazing) and a special thank to Daylen, our webmaster, and to the people contributing to the final optimized builds:

- BMI2: Thomas Zipproth
- POPCNT: Vah
- 64-bit: Vah
- 32-bit: Kiran Panditrao

SF 9 should improve about 45 ELO in self-play compared to SF 8, but because now we set contempt by default, we could expect something better in rating lists that use games among different engines to measure ELO.

Another visible change is the merge of the latest version of Ronald de Man Tablebases code, that is now better at detecting and reporting mate scores instead of TB scores.

Thank you again to all the people that contributed to this release: you did a great job!
This is a little bit 45 ELO Please try in the future to increase the engine at about 100 Elo some.Unfortunately, the engine with a small 45 ELO stands in place and getting worse with its development.
Yeah, they should go to Walmart and buy 100 elo there and put it in Stockfish. Problem solved :lol:

Krzysztof Grzelak
Posts: 811
Joined: Tue Jul 15, 2014 10:47 am

Re: Stockfish 9

Post by Krzysztof Grzelak » Thu Feb 01, 2018 3:21 pm

CMCanavessi wrote:Yeah, they should go to Walmart and buy 100 elo there and put it in Stockfish. Problem solved :lol:
Here is not a problem in buying only in doing.

Leo
Posts: 730
Joined: Fri Sep 16, 2016 4:55 pm
Location: USA/Minnesota
Full name: Leo

Re: Stockfish 9

Post by Leo » Thu Feb 01, 2018 3:29 pm

I am glad that they didn't let Alpha Zero stop them from moving forward.
BrainFish-2 190310 bmi2 Elo 3576.

zullil
Posts: 5158
Joined: Mon Jan 08, 2007 11:31 pm
Location: PA USA
Full name: Louis Zulli

Re: Stockfish 9

Post by zullil » Thu Feb 01, 2018 3:39 pm

Krzysztof Grzelak wrote: Please try in the future to increase the engine at about 100 Elo
I really don't think there was a pre-determined limit on what the developers tried to achieve. :wink:

But for Stockfish 10, you will be happy to hear that the entire development team is trying for an increase of 5000 Elo. Why aim low?

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