Author: Shawn Xu
Date: Sun Jul 28 22:22:50 2024 +0200
Timestamp: 1722198170
Remove Killers
The removal of killers on line 1774 resulted in a substantial decrease
in pre-LMR history average, so a negative history fill is applied to
counter it.
Passed Non-regression STC (vs #5513):
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 21984 W: 5886 L: 5645 D: 10453 Elo +3.81
Ptnml(0-2): 80, 2492, 5628, 2691, 101
https://tests.stockfishchess.org/tests/ ... be9d4ecb9d
Passed Non-regression LTC (vs #5513):
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 95430 W: 24141 L: 23995 D: 47294 Elo +0.53
Ptnml(0-2): 97, 10537, 26298, 10689, 94
https://tests.stockfishchess.org/tests/ ... be9d4ecbf8
closes https://github.com/official-stockfish/S ... /pull/5517
Bench: 1660869
https://abrok.eu/stockfish/
Stockfish
Re: Stockfish
Author: Shawn Xu
Date: Sat Aug 3 09:42:54 2024 +0200
Timestamp: 1722670974
Simplify Cutnode Reduction
Passed Non-regression STC:
LR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 143968 W: 37439 L: 37333 D: 69196 Elo +0.26
Ptnml(0-2): 521, 17228, 36456, 17182, 597
https://tests.stockfishchess.org/tests/ ... be9d4ed27f
Passed Non-regression LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 198954 W: 50384 L: 50345 D: 98225 Elo +0.07
Ptnml(0-2): 201, 22360, 54347, 22337, 232
https://tests.stockfishchess.org/tests/ ... be9d4ed423
closes https://github.com/official-stockfish/S ... /pull/5526
bench 1277466
https://abrok.eu/stockfish/
Date: Sat Aug 3 09:42:54 2024 +0200
Timestamp: 1722670974
Simplify Cutnode Reduction
Passed Non-regression STC:
LR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 143968 W: 37439 L: 37333 D: 69196 Elo +0.26
Ptnml(0-2): 521, 17228, 36456, 17182, 597
https://tests.stockfishchess.org/tests/ ... be9d4ed27f
Passed Non-regression LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 198954 W: 50384 L: 50345 D: 98225 Elo +0.07
Ptnml(0-2): 201, 22360, 54347, 22337, 232
https://tests.stockfishchess.org/tests/ ... be9d4ed423
closes https://github.com/official-stockfish/S ... /pull/5526
bench 1277466
https://abrok.eu/stockfish/
Re: Stockfish
Author: Taras Vuk
Date: Tue Aug 20 21:37:25 2024 +0200
Timestamp: 1724182645
Tweak late move extensions
Allow late move extensions only for PV and cut nodes.
Passed STC:
LLR: 2.95 (-2.94,2.94) <0.00,2.00>
Total: 44512 W: 11688 L: 11355 D: 21469 Elo +2.60
Ptnml(0-2): 167, 5180, 11229, 5513, 167
https://tests.stockfishchess.org/tests/ ... be9d4ef10e
Passed LTC:
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 152970 W: 39026 L: 38466 D: 75478 Elo +1.27
Ptnml(0-2): 102, 16792, 42164, 17298, 129
https://tests.stockfishchess.org/tests/ ... 509c13b2b6
closes https://github.com/official-stockfish/S ... /pull/5541
https://abrok.eu/stockfish/?
Date: Tue Aug 20 21:37:25 2024 +0200
Timestamp: 1724182645
Tweak late move extensions
Allow late move extensions only for PV and cut nodes.
Passed STC:
LLR: 2.95 (-2.94,2.94) <0.00,2.00>
Total: 44512 W: 11688 L: 11355 D: 21469 Elo +2.60
Ptnml(0-2): 167, 5180, 11229, 5513, 167
https://tests.stockfishchess.org/tests/ ... be9d4ef10e
Passed LTC:
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 152970 W: 39026 L: 38466 D: 75478 Elo +1.27
Ptnml(0-2): 102, 16792, 42164, 17298, 129
https://tests.stockfishchess.org/tests/ ... 509c13b2b6
closes https://github.com/official-stockfish/S ... /pull/5541
https://abrok.eu/stockfish/?
Re: Stockfish
Author: FauziAkram
Date: Wed Aug 28 09:35:21 2024 +0200
Timestamp: 1724830521
Simpler formula for ss->cutoffCnt update
closes https://github.com/official-stockfish/S ... /pull/5548
No functional change
https://abrok.eu/stockfish/?
Date: Wed Aug 28 09:35:21 2024 +0200
Timestamp: 1724830521
Simpler formula for ss->cutoffCnt update
closes https://github.com/official-stockfish/S ... /pull/5548
No functional change
https://abrok.eu/stockfish/?
Re: Stockfish
uthor: Joost VandeVondele
Date: Tue Sep 3 17:53:23 2024 +0200
Timestamp: 1725378803
Update Top CPU Contributors
to the status as of Aug 31st 2024.
closes https://github.com/official-stockfish/S ... /pull/5561
No functional change
https://abrok.eu/stockfish/?
Date: Tue Sep 3 17:53:23 2024 +0200
Timestamp: 1725378803
Update Top CPU Contributors
to the status as of Aug 31st 2024.
closes https://github.com/official-stockfish/S ... /pull/5561
No functional change
https://abrok.eu/stockfish/?
Re: Stockfish
Author: Joost VandeVondele
Date: Fri Sep 6 16:53:45 2024 +0200
Timestamp: 1725634425
Stockfish 17
Official release version of Stockfish 17
Bench: 1484730
---
Stockfish 17
Today we have the pleasure to announce a new major release of Stockfish. As
always, you can freely download it at https://stockfishchess.org/download and
use it in the GUI of your choice.
Don’t forget to join our Discord server[1] to get in touch with the community
of developers and users of the project!
*Quality of chess play*
In tests against Stockfish 16, this release brings an Elo gain of up to 46
points[2] and wins up to 4.5 times more game pairs[3] than it loses. In
practice, high-quality moves are now found in less time, with a user upgrading
from Stockfish 14 being able to analyze games at least 6 times[4] faster with
Stockfish 17 while maintaining roughly the same quality.
During this development period, Stockfish won its 9th consecutive first place
in the main league of the Top Chess Engine Championship (TCEC)[5], and the 24th
consecutive first place in the main events (bullet, blitz, and rapid) of the
Computer Chess Championship (CCC)[6].
*Update highlights*
*Improved engine lines*
This release introduces principal variations (PVs) that are more informative
for mate and decisive table base (TB) scores. In both cases, the PV will
contain all moves up to checkmate. For mate scores, the PV shown is the best
variation known to the engine at that point, while for table base wins, it
follows, based on the TB, a sequence of moves that preserves the game outcome
to checkmate.
*NUMA performance optimization*
For high-end computers with multiple CPUs (typically a dual-socket architecture
with 100+ cores), this release automatically improves performance with a
`NumaPolicy` setting that optimizes non-uniform memory access (NUMA). Although
typical consumer hardware will not benefit, speedups of up to 2.8x[7] have been
measured.
*Shoutouts*
*ChessDB*
During the past 1.5 years, hundreds of cores have been continuously running
Stockfish to grow a database of analyzed positions. This chess cloud
database[8] now contains well over 45 billion positions, providing excellent
coverage of all openings and commonly played lines. This database is already
integrated into GUIs such as En Croissant[9] and Nibbler[10], which access it
through the public API.
*Leela Chess Zero*
Generally considered to be the strongest GPU engine, it continues to provide
open data which is essential for training our NNUE networks. They released
version 0.31.1[11] of their engine a few weeks ago, check it out!
*Website redesign*
Our website has undergone a redesign in recent months, most notably in our home
page[12], now featuring a darker color scheme and a more modern aesthetic,
while still maintaining its core identity. We hope you'll like it as much as we
do!
*Thank you*
The Stockfish project builds on a thriving community of enthusiasts (thanks
everybody!) who contribute their expertise, time, and resources to build a free
and open-source chess engine that is robust, widely available, and very strong.
We would like to express our gratitude for the 11k stars[13] that light up our
GitHub project! Thank you for your support and encouragement – your recognition
means a lot to us.
We invite our chess fans to join the Fishtest testing framework[14] to
contribute compute resources needed for development. Programmers can contribute
to the project either directly to Stockfish[15] (C++), to Fishtest[16] (HTML,
CSS, JavaScript, and Python), to our trainer nnue-pytorch[17] (C++ and Python),
or to our website[18] (HTML, CSS/SCSS, and JavaScript).
The Stockfish team
https://abrok.eu/stockfish/?
Date: Fri Sep 6 16:53:45 2024 +0200
Timestamp: 1725634425
Stockfish 17
Official release version of Stockfish 17
Bench: 1484730
---
Stockfish 17
Today we have the pleasure to announce a new major release of Stockfish. As
always, you can freely download it at https://stockfishchess.org/download and
use it in the GUI of your choice.
Don’t forget to join our Discord server[1] to get in touch with the community
of developers and users of the project!
*Quality of chess play*
In tests against Stockfish 16, this release brings an Elo gain of up to 46
points[2] and wins up to 4.5 times more game pairs[3] than it loses. In
practice, high-quality moves are now found in less time, with a user upgrading
from Stockfish 14 being able to analyze games at least 6 times[4] faster with
Stockfish 17 while maintaining roughly the same quality.
During this development period, Stockfish won its 9th consecutive first place
in the main league of the Top Chess Engine Championship (TCEC)[5], and the 24th
consecutive first place in the main events (bullet, blitz, and rapid) of the
Computer Chess Championship (CCC)[6].
*Update highlights*
*Improved engine lines*
This release introduces principal variations (PVs) that are more informative
for mate and decisive table base (TB) scores. In both cases, the PV will
contain all moves up to checkmate. For mate scores, the PV shown is the best
variation known to the engine at that point, while for table base wins, it
follows, based on the TB, a sequence of moves that preserves the game outcome
to checkmate.
*NUMA performance optimization*
For high-end computers with multiple CPUs (typically a dual-socket architecture
with 100+ cores), this release automatically improves performance with a
`NumaPolicy` setting that optimizes non-uniform memory access (NUMA). Although
typical consumer hardware will not benefit, speedups of up to 2.8x[7] have been
measured.
*Shoutouts*
*ChessDB*
During the past 1.5 years, hundreds of cores have been continuously running
Stockfish to grow a database of analyzed positions. This chess cloud
database[8] now contains well over 45 billion positions, providing excellent
coverage of all openings and commonly played lines. This database is already
integrated into GUIs such as En Croissant[9] and Nibbler[10], which access it
through the public API.
*Leela Chess Zero*
Generally considered to be the strongest GPU engine, it continues to provide
open data which is essential for training our NNUE networks. They released
version 0.31.1[11] of their engine a few weeks ago, check it out!
*Website redesign*
Our website has undergone a redesign in recent months, most notably in our home
page[12], now featuring a darker color scheme and a more modern aesthetic,
while still maintaining its core identity. We hope you'll like it as much as we
do!
*Thank you*
The Stockfish project builds on a thriving community of enthusiasts (thanks
everybody!) who contribute their expertise, time, and resources to build a free
and open-source chess engine that is robust, widely available, and very strong.
We would like to express our gratitude for the 11k stars[13] that light up our
GitHub project! Thank you for your support and encouragement – your recognition
means a lot to us.
We invite our chess fans to join the Fishtest testing framework[14] to
contribute compute resources needed for development. Programmers can contribute
to the project either directly to Stockfish[15] (C++), to Fishtest[16] (HTML,
CSS, JavaScript, and Python), to our trainer nnue-pytorch[17] (C++ and Python),
or to our website[18] (HTML, CSS/SCSS, and JavaScript).
The Stockfish team
https://abrok.eu/stockfish/?
Re: Stockfish
Author: MinetaS
Date: Tue Sep 10 23:00:41 2024 +0200
Timestamp: 1726002041
Fix net downloading script
The recent commit introduced a bug in the net downloading script that
the file is not downloaded correctly and the content is redirected to
stdout.
closes https://github.com/official-stockfish/S ... /pull/5585
No functional change
https://abrok.eu/stockfish/?
Date: Tue Sep 10 23:00:41 2024 +0200
Timestamp: 1726002041
Fix net downloading script
The recent commit introduced a bug in the net downloading script that
the file is not downloaded correctly and the content is redirected to
stdout.
closes https://github.com/official-stockfish/S ... /pull/5585
No functional change
https://abrok.eu/stockfish/?
Re: Stockfish
Author: Shawn Xu
Date: Sat Sep 28 18:01:31 2024 +0200
Timestamp: 1727539291
Make Correction History Size Uniform
Passed Non-regression STC:
LLR: 2.93 (-2.94,2.94) <-1.75,0.25>
Total: 207232 W: 53834 L: 53802 D: 99596 Elo +0.05
Ptnml(0-2): 695, 24486, 53200, 24562, 673
https://tests.stockfishchess.org/tests/ ... 47d953ada1
Passed Non-regression LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 99120 W: 25264 L: 25123 D: 48733 Elo +0.49
Ptnml(0-2): 66, 10803, 27675, 10956, 60
https://tests.stockfishchess.org/tests/ ... 47d953b056
Passed Non-regression LTC vs #5606:
LLR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 208950 W: 53049 L: 53019 D: 102882 Elo +0.05
Ptnml(0-2): 111, 23232, 57760, 23260, 112
https://tests.stockfishchess.org/tests/ ... 47d953b2f2
closes https://github.com/official-stockfish/S ... /pull/5609
bench 1575189
https://abrok.eu/stockfish/
Date: Sat Sep 28 18:01:31 2024 +0200
Timestamp: 1727539291
Make Correction History Size Uniform
Passed Non-regression STC:
LLR: 2.93 (-2.94,2.94) <-1.75,0.25>
Total: 207232 W: 53834 L: 53802 D: 99596 Elo +0.05
Ptnml(0-2): 695, 24486, 53200, 24562, 673
https://tests.stockfishchess.org/tests/ ... 47d953ada1
Passed Non-regression LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 99120 W: 25264 L: 25123 D: 48733 Elo +0.49
Ptnml(0-2): 66, 10803, 27675, 10956, 60
https://tests.stockfishchess.org/tests/ ... 47d953b056
Passed Non-regression LTC vs #5606:
LLR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 208950 W: 53049 L: 53019 D: 102882 Elo +0.05
Ptnml(0-2): 111, 23232, 57760, 23260, 112
https://tests.stockfishchess.org/tests/ ... 47d953b2f2
closes https://github.com/official-stockfish/S ... /pull/5609
bench 1575189
https://abrok.eu/stockfish/
Re: Stockfish
Author: Linmiao Xu
Date: Tue Oct 1 21:02:44 2024 +0200
Timestamp: 1727809364
Tweak 7 eval params
Values found from 120k / 120k spsa games at 30+0.3
Passed STC:
https://tests.stockfishchess.org/tests/ ... 47d953b003
LLR: 2.93 (-2.94,2.94) <0.00,2.00>
Total: 241312 W: 62994 L: 62373 D: 115945 Elo +0.89
Ptnml(0-2): 754, 28684, 61280, 29063, 875
Passed LTC:
https://tests.stockfishchess.org/tests/ ... 47d953b331
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 304896 W: 77580 L: 76709 D: 150607 Elo +0.99
Ptnml(0-2): 198, 33413, 84360, 34274, 203
closes https://github.com/official-stockfish/S ... /pull/5611
bench 1173651
https://abrok.eu/stockfish/?
Date: Tue Oct 1 21:02:44 2024 +0200
Timestamp: 1727809364
Tweak 7 eval params
Values found from 120k / 120k spsa games at 30+0.3
Passed STC:
https://tests.stockfishchess.org/tests/ ... 47d953b003
LLR: 2.93 (-2.94,2.94) <0.00,2.00>
Total: 241312 W: 62994 L: 62373 D: 115945 Elo +0.89
Ptnml(0-2): 754, 28684, 61280, 29063, 875
Passed LTC:
https://tests.stockfishchess.org/tests/ ... 47d953b331
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 304896 W: 77580 L: 76709 D: 150607 Elo +0.99
Ptnml(0-2): 198, 33413, 84360, 34274, 203
closes https://github.com/official-stockfish/S ... /pull/5611
bench 1173651
https://abrok.eu/stockfish/?
-
Sedat Canbaz
- Posts: 2404
- Joined: Wed Jun 21, 2023 6:29 am
Re: Stockfish
Thanks a lot..Homayoun wrote: Thu Oct 03, 2024 10:42 pm Author: Linmiao Xu
Date: Tue Oct 1 21:02:44 2024 +0200
Timestamp: 1727809364
Tweak 7 eval params
Values found from 120k / 120k spsa games at 30+0.3
Passed STC:
https://tests.stockfishchess.org/tests/ ... 47d953b003
LLR: 2.93 (-2.94,2.94) <0.00,2.00>
Total: 241312 W: 62994 L: 62373 D: 115945 Elo +0.89
Ptnml(0-2): 754, 28684, 61280, 29063, 875
Passed LTC:
https://tests.stockfishchess.org/tests/ ... 47d953b331
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 304896 W: 77580 L: 76709 D: 150607 Elo +0.99
Ptnml(0-2): 198, 33413, 84360, 34274, 203
closes https://github.com/official-stockfish/S ... /pull/5611
bench 1173651
https://abrok.eu/stockfish/?