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CFish

descriptionCFish - Page 22 EmptyRe: CFish

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Thanks boss! Pls kindly help us with the android version. Thank you!

descriptionCFish - Page 22 EmptyRe: CFish

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СhessMan:

My compilations of Cfish 290721 x32-x64 updated by Sopel97

SF version:
Author: VoyagerOne
Date: Tue Jul 13 17:35:20 2021 +0200
Timestamp: 1626190520

Don't save excluded move eval in TT


https://github.com/syzygy1/Cfish/pull/201#issuecomment-889040016

Sopel97 commented 4 hours ago
More patches applied on top here https://github.com/Sopel97/Cfish/tree/sf_2021-07-23 , but the issues outlined in this PR still persist.


Download: https://pixeldrain.com/u/rDVfLh7h



==========
AVX2+, Android and some other ARCH still does not work

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Does it have Bmi2 lisandr? thanks

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ChessMan:

Maybe someone will be interested.
One of Sopel's promising works:
new network architecture

HalfKAv2_hm-1024x2-16-32-1
Sopel97 committed 6 days ago

from this test:
https://tests.stockfishchess.org/tests/view/610264ecafad2da4f4ae3a8d

Sources
https://github.com/Sopel97/Stockfish/tree/nn-exp126-run0-epoch379.nnue

Download: https://pixeldrain.com/u/LpT4x6Ns

The network is not embedded.
The speed is less than that of the master strum, but that's okay.

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Cfish 020821 is made from Sopel97's source code "Don't save excluded move eval in TT", and i added the follow patchess ->
Simplify new cmh pruning thresholds by using directly a quadratic formula.
Futile pruning simplification
CMH Pruning Tweak
Update default net to nn-56a5f1c4173a.nnue
Update default net to nn-26abeed38351.nnue
Simplification in LMR
Update the default net to nn-76a8a7ffb820.nnue.
Apply good/bad history reduction also when inCheck
Simplify lowply-history scoring logic
Prune illegal moves in qsearch earlier

Windows 10 pro 64-bit, AMD Ryzen 7 1800X - 8 cores / 16 threads, 3.60 GHz, 16 GB RAM
GUI: Cutechess 1.2 / Round Robin / TC: 60sec+0.6 / 1 core per engine / Hash 64 / book=8movesV3.pgn, order sequential
For GUI syzygy 5 for draw adjudication / Ponder OFF / concurrency = 7

Code:

Score of Cfish-020821_x64_ELTO_N_SSE41_pop_sp_Ryzen vs Cfish-290721_x64_ELTO_N_SSE41_pop_sp_Ryzen: 257 - 227 - 5516 [0.502]
...      Cfish-020821_x64_ELTO_N_SSE41_pop_sp_Ryzen playing White: 211 - 32 - 2757  [0.530] 3000
...      Cfish-020821_x64_ELTO_N_SSE41_pop_sp_Ryzen playing Black: 46 - 195 - 2759  [0.475] 3000
...      White vs Black: 406 - 78 - 5516  [0.527] 6000
Elo difference: 1.7 +/- 2.5, LOS: 91.4 %, DrawRatio: 91.9 %
6000 of 6000 games finished.

Games https://pixeldrain.com/u/epgoocYn

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Added patches over Cfish 020821 ->
Revert futility pruning patches
SEE simplification
Update default net to nn-46832cfbead3.nnue

Windows 10 pro 64-bit, AMD Ryzen 7 1800X - 8 cores / 16 threads, 3.60 GHz, 16 GB RAM
GUI: Cutechess 1.2 / Round Robin / TC: 60sec+0.6 / 1 core per engine / Hash 64 / book=8movesV3.pgn, order sequential
For GUI syzygy 5 for draw adjudication / Ponder OFF / concurrency = 7

Code:

Score of Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen vs Cfish-290721_x64_ELTO_N_SSE41_pop_sp_Ryzen: 239 - 207 - 5554 [0.503]
...      Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen playing White: 201 - 38 - 2761  [0.527] 3000
...      Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen playing Black: 38 - 169 - 2793  [0.478] 3000
...      White vs Black: 370 - 76 - 5554  [0.524] 6000
Elo difference: 1.9 +/- 2.4, LOS: 93.5 %, DrawRatio: 92.6 %
6000 of 6000 games finished.

Observing the test.
Spoiler :

Code:

Score of Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen vs Cfish-290721_x64_ELTO_N_SSE41_pop_sp_Ryzen: 26 - 13 - 400 [0.515]
...      Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen playing White: 20 - 1 - 199  [0.543] 220
...      Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen playing Black: 6 - 12 - 201  [0.486] 219
...      White vs Black: 32 - 7 - 400  [0.528] 439
Elo difference: 10.3 +/- 9.6, LOS: 98.1 %, DrawRatio: 91.1 %
439 of 6000 games finished.

Score of Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen vs Cfish-290721_x64_ELTO_N_SSE41_pop_sp_Ryzen: 32 - 20 - 508 [0.511]
...      Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen playing White: 26 - 1 - 254  [0.544] 281
...      Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen playing Black: 6 - 19 - 254  [0.477] 279
...      White vs Black: 45 - 7 - 508  [0.534] 560
Elo difference: 7.4 +/- 8.7, LOS: 95.2 %, DrawRatio: 90.7 %
560 of 6000 games finished.

Score of Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen vs Cfish-290721_x64_ELTO_N_SSE41_pop_sp_Ryzen: 77 - 71 - 1485 [0.502]
...      Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen playing White: 62 - 11 - 744  [0.531] 817
...      Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen playing Black: 15 - 60 - 741  [0.472] 816
...      White vs Black: 122 - 26 - 1485  [0.529] 1633
Elo difference: 1.3 +/- 5.1, LOS: 68.9 %, DrawRatio: 90.9 %
1633 of 6000 games finished.

Score of Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen vs Cfish-290721_x64_ELTO_N_SSE41_pop_sp_Ryzen: 98 - 85 - 2064 [0.503]
...      Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen playing White: 77 - 13 - 1034  [0.528] 1124
...      Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen playing Black: 21 - 72 - 1030  [0.477] 1123
...      White vs Black: 149 - 34 - 2064  [0.526] 2247
Elo difference: 2.0 +/- 4.1, LOS: 83.2 %, DrawRatio: 91.9 %
2247 of 6000 games finished.

Score of Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen vs Cfish-290721_x64_ELTO_N_SSE41_pop_sp_Ryzen: 152 - 131 - 3542 [0.503]
...      Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen playing White: 124 - 23 - 1765  [0.526] 1912
...      Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen playing Black: 28 - 108 - 1777  [0.479] 1913
...      White vs Black: 232 - 51 - 3542  [0.524] 3825
Elo difference: 1.9 +/- 3.0, LOS: 89.4 %, DrawRatio: 92.6 %
3825 of 6000 games finished.

Score of Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen vs Cfish-290721_x64_ELTO_N_SSE41_pop_sp_Ryzen: 167 - 144 - 3868 [0.503]
...      Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen playing White: 137 - 24 - 1929  [0.527] 2090
...      Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen playing Black: 30 - 120 - 1939  [0.478] 2089
...      White vs Black: 257 - 54 - 3868  [0.524] 4179
Elo difference: 1.9 +/- 2.9, LOS: 90.4 %, DrawRatio: 92.6 %
4179 of 6000 games finished.

Score of Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen vs Cfish-290721_x64_ELTO_N_SSE41_pop_sp_Ryzen: 183 - 162 - 4258 [0.502]
...      Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen playing White: 151 - 29 - 2123  [0.526] 2303
...      Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen playing Black: 32 - 133 - 2135  [0.478] 2300
...      White vs Black: 284 - 61 - 4258  [0.524] 4603
Elo difference: 1.6 +/- 2.7, LOS: 87.1 %, DrawRatio: 92.5 %
4603 of 6000 games finished.

Score of Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen vs Cfish-290721_x64_ELTO_N_SSE41_pop_sp_Ryzen: 205 - 182 - 4725 [0.502]
...      Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen playing White: 172 - 31 - 2353  [0.528] 2556
...      Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen playing Black: 33 - 151 - 2372  [0.477] 2556
...      White vs Black: 323 - 64 - 4725  [0.525] 5112
Elo difference: 1.6 +/- 2.6, LOS: 87.9 %, DrawRatio: 92.4 %
5112 of 6000 games finished.

Score of Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen vs Cfish-290721_x64_ELTO_N_SSE41_pop_sp_Ryzen: 230 - 200 - 5374 [0.503]
...      Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen playing White: 192 - 38 - 2673  [0.527] 2903
...      Cfish-040821_x64_ELTO_N_SSE41_pop_sp_Ryzen playing Black: 38 - 162 - 2701  [0.479] 2901
...      White vs Black: 354 - 76 - 5374  [0.524] 5804
Elo difference: 1.8 +/- 2.4, LOS: 92.6 %, DrawRatio: 92.6 %
5804 of 6000 games finished.


Games https://pixeldrain.com/u/7qX73uSa

descriptionCFish - Page 22 EmptyRe: CFish

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My compilations of Cfish 120821, added patches over Sopel95's source code "Don't save excluded move eval in TT"
Revert futility pruning patches
SEE simplification
Update default net to nn-46832cfbead3.nnue
Simplify new cmh pruning thresholds by using directly a quadratic formula.
Futile pruning simplification
CMH Pruning Tweak
Update default net to nn-56a5f1c4173a.nnue
Update default net to nn-26abeed38351.nnue
Simplification in LMR
Update the default net to nn-76a8a7ffb820.nnue.
Apply good/bad history reduction also when inCheck
Simplify lowply-history scoring logic
Prune illegal moves in qsearch earlier

For sure Stockfish has lost few elo after reversion of this two patches -> https://github.com/official-stockfish/Stockfish/commit/09b6d28391cf582d99897360b225bcbbe38dd1c6 and https://github.com/official-stockfish/Stockfish/commit/dbd7f602d3c7622df294f87d7239b5aaf31f695f but, now it has better impact mate finding capabilities. See here https://github.com/official-stockfish/Stockfish/pull/3641
To avoid any confusions CF 120821 was tested as Cfish 040821, this two are exactly the same engine.
Download https://pixeldrain.com/u/PPE2n3yx
Spoiler :
CFish - Page 22 2293a793512949e81340051181b7d75e
CFish - Page 22 6a8dfc9addb47b0ef6d2b3036551acc3

descriptionCFish - Page 22 EmptyRe: CFish

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@ChessFan1 wrote:
My compilations of Cfish 120821, added patches over Sopel95's source code "Don't save excluded move eval in TT"
Revert futility pruning patches
SEE simplification
Update default net to nn-46832cfbead3.nnue
Simplify new cmh pruning thresholds by using directly a quadratic formula.
Futile pruning simplification
CMH Pruning Tweak
Update default net to nn-56a5f1c4173a.nnue
Update default net to nn-26abeed38351.nnue
Simplification in LMR
Update the default net to nn-76a8a7ffb820.nnue.
Apply good/bad history reduction also when inCheck
Simplify lowply-history scoring logic
Prune illegal moves in qsearch earlier

For sure Stockfish has lost few elo after reversion of this two patches -> https://github.com/official-stockfish/Stockfish/commit/09b6d28391cf582d99897360b225bcbbe38dd1c6 and https://github.com/official-stockfish/Stockfish/commit/dbd7f602d3c7622df294f87d7239b5aaf31f695f but, now it has better impact mate finding capabilities. See here https://github.com/official-stockfish/Stockfish/pull/3641
To avoid any confusions CF 120821 was tested as Cfish 040821, this two are exactly the same engine.
Download https://pixeldrain.com/u/PPE2n3yx
Spoiler :
CFish - Page 22 2293a793512949e81340051181b7d75e
CFish - Page 22 6a8dfc9addb47b0ef6d2b3036551acc3
Thank u sir. Please kindly help us with android version. Thanks once again.

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@Poisoned pawn wrote:

Thank u sir. Please kindly help us with android version. Thanks once again.

There is a problem in Sopel's source code (it was mentioned already), arches like BMI2, AVX2, VNI512, armv7 - armv8, can't be compiled. Read here https://github.com/syzygy1/Cfish/pull/201#issuecomment-879235479

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@ChessFan1 wrote:
@Poisoned pawn wrote:

Thank u sir. Please kindly help us with android version. Thanks once again.

There is a problem in Sopel's source code (it was mentioned already), arches like BMI2, AVX2, VNI512, armv7 - armv8, can't be compiled. Read here https://github.com/syzygy1/Cfish/pull/201#issuecomment-879235479
Thank you boss for the clarification. I appreciate!

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ChessMan:

Cfish_130821_x64.

https://pixeldrain.com/u/NWMy7fQL

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@lisandr wrote:
ChessMan:

Cfish_130821_x64.

https://pixeldrain.com/u/NWMy7fQL


Thanks but no avx2 ?

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@pano wrote:


Thanks but no avx2 ?

See https://www.chess2u.com/t11930p525-cfish#107977

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Dear Chees man please share CF EXT android updated engine

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Hi please put a new version of Cfish. Thank.

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dear friend,
that was really strong engine,
already 3 months on hiatus.

if any new release, want to test it with Redfish from mr. bookmaker.

btw, fyi, from my friend, LittleJoe,
Sopel97 upgraded CFish to the newest SF nnue, and later renamed it to FatTitz 1.1

best regards,
mi.

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Hello
Stockfish 14.1 is very very very powerful, we want the Cfish version

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https://pixeldrain.com/u/5AuhtQnL

14.1 is very very very powerful, we want the Cfish version

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yup, agreed, the PB version it's very powerful.

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Hi ..
Pls give cfish latest android version. 7arm

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No Cfish updates have been made since this summer.

@anandhu002 wrote:
Hi ..
Pls give cfish latest android version. 7arm

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This is the latest Cfish official update dated June 2021. I decided today to make all my binaries of it available to anyone, this engine is too precious to be kept apart for just a niche. It is the best tool to find the right move very fast and it's reliable in the 95% of cases (the remaining 5% are the first moves of C54 and A28 on an average computer); Stockfish dev has a reliability of something like 85% because of the exhagerate fluctuation of the score up to the middlegame in the most of the openings.

- Windows (any platform)
- Android (any platform)
- Linux (any platform)


For the installation follow the recommendations inside the packages.

Download only the package corresponding to the device with which you are browsing the site (Responsible Download Technology®).

Changelog: Updated to "Simplification for countermoves based pruning".

Link: https://chess.massimilianogoi.com/download/cfish/

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Dear Friend for android version armv8 engine error is coming
"Failed to start engine" please give solution.

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@sindhusheak wrote:
Dear Friend for android version armv8 engine error is coming
"Failed to start engine" please give solution.


Did you follow the instructions? Engine in Droidfish/uci and nnue file in Droidfis/uci/logs.

Please answer even if you succeed.

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Yes we are fallowing same

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