stockfish of the neural network

@leonhurricaneX wrote:

StockFish Experimental by Matt Ginsberg
Embedded net nn-9aaa2abe4015.nnue. (60 mb NET)
Aarch64 Only --> https://pixeldrain.com/u/DxV8CsaV

https://github.com/mattginsberg/Stockfish/tree/47dfca8943442d7c7f35bce91ea9fc85d737df71

Thank's a lot dear..
GBU

@lisandr wrote:

Thanks Leo, is this the best network now?

Nope but it's very close to master just 2-3 elo weaker and speed is also good for a 60 mb NET. This was First 60 mb so it's a very good start by Author.

armv7-neon probably won't work below Android 4.4.
https://pixeldrain.com/u/Jy6xS7LJ

Hi Leo.. the engine is good, and quiet strong in my opinion..
But it always crashed and then got froze right in the middle of the game. Btw.. I was using Droidfish

Do u have any clue why it happened all the time buddy ?

Thx

@Zippo wrote:

Hi Leo.. the engine is good, and quiet strong in my opinion..
But it always crashed and then got froze right in the middle of the game.

Do u have any clue why it happened all the time buddy ?

Thx

Yeah it's because of its heavy Net its takes slightly more time to load in memory because the phone's RAM have less bandwidth comparing to PC but luckily it dosen't have any reduction in speed.

Basically it can be fix by increasing the Hash Size probably 1024 size can fix your problem.

Actually I already set my hash table to 2048mb this long,
But I will try to upgrade it to 4096mb as u advised, sinced my smartphone has 6gb of RAM
Thx a lot buddy

i need _x64__SSE41_popcnt version to run Embedded net nn-9aaa2abe4015.nnue.

Stockfish 13 is releasing Tommorow.
Yep it's early probably because of Fat Fritz controversy.

https://github.com/official-stockfish/Stockfish/pull/3359#issuecomment-781546811

Author: bmc4
Date: Sun Mar 7 21:16:38 2021 +0100
Timestamp: 1615148198

Author: mattginsberg
Date: Sun Mar 7 21:10:04 2021 +0100
Timestamp: 1615147804

Author: noobpwnftw
Date: Sun Mar 7 20:02:11 2021 +0100
Timestamp: 1615143731

Author: Dieter Dobbelaere
Date: Sun Mar 7 14:26:54 2021 +0100
Timestamp: 1615123614

Author: Antoine Champion
Date: Sun Mar 7 14:05:01 2021 +0100
Timestamp: 1615122301
https://abrok.eu/stockfish/

Stockfish 080321 Update for Android
https://pixeldrain.com/l/GGC3NH6T

Thanks Leon..

Thanks Leo

@leonhurricaneX wrote:

Stockfish 080321 Update for Android
https://pixeldrain.com/l/GGC3NH6T

Thx a lot Dear..
GBU

Author: Topologist
Date: Wed Mar 10 12:32:53 2021 +0100
Timestamp: 1615375973

Change advanced pawn push threshold

A pawn push is now considered to be "advanced" if the relative destination
rank is > 6 (previously it was > 5). This affects the search heuristic.

Also remove an assert concerning en passant moves in qsearch().

STC:
LLR: 2.97 (-2.94,2.94) {-0.25,1.25}
Total: 46744 W: 4224 L: 4040 D: 38480 Elo +1.37
Ptnml(0-2): 165, 3206, 16451, 3380, 170
https://tests.stockfishchess.org/tests/view/604746082433018de7a3872e

LTC:
LLR: 2.94 (-2.94,2.94) {0.25,1.25}
Total: 107840 W: 4198 L: 3892 D: 99750 Elo +0.99
Ptnml(0-2): 58, 3472, 46557, 3772, 61
https://tests.stockfishchess.org/tests/view/60475eae2433018de7a38737

Closes https://github.com/official-stockfish/Stockfish/pull/3389

Bench: 4796780

https://abrok.eu/stockfish/

SF 100321 for android?
Seems like this version has the heuristic search changed. I think this is the difference between the value of the pawn structure and their rank, in the game the search for the flanks of the game is slightly changed... Thanks ️‍�️‍�

Author: Vizvezdenec
Date: Wed Mar 17 10:34:02 2021 +0100
Timestamp: 1615973642

Remove advanced_pawn_push()

Continuation of work by @topologist: we now do futility pruning and movecount
pruning in qsearch() for pawn pushes up to the 7th rank. So the condition to
avoid the pruning is if the move is a promotion or not. This allows to get rid
of the advanced_pawn_push() function in position.h alltogether.

Passed STC
https://tests.stockfishchess.org/tes...33018de7a387e6
LLR: 2.93 (-2.94,2.94) {-1.25,0.25}
Total: 34424 W: 3081 L: 3015 D: 28328 Elo +0.67
Ptnml(0-2): 110, 2442, 12052, 2488, 120

Passed LTC
https://tests.stockfishchess.org/tes...33018de7a387f0
LLR: 2.94 (-2.94,2.94) {-0.75,0.25}
Total: 142024 W: 5170 L: 5202 D: 131652 Elo -0.08
Ptnml(0-2): 50, 4678, 61613, 4596, 75

Closes https://github.com/official-stockfis...fish/pull/3390

Bench: 4339126


https://abrok.eu/stockfish/

Get the latest, good improvement
Elo +2.58

Author: bmc4
Date: Thu Mar 18 00:21:41 2021 +0100
Timestamp: 1616023301

Change definition of between_bb()

We remark that in current master, most of our use cases for between_bb() can be
optimized if the second parameter of the function is added to the segment. So we
change the definition of between_bb(s1, s2) such that it excludes s1 but includes s2.

We also use a precomputed array for between_bb() for another small speed gain
(see https://tests.stockfishchess.org/tests/view/604d09f72433018de7a389fb).

Passed STC:
LLR: 2.96 (-2.94,2.94) {-0.25,1.25}
Total: 18736 W: 1746 L: 1607 D: 15383 Elo +2.58
Ptnml(0-2): 61, 1226, 6644, 1387, 50
https://tests.stockfishchess.org/tests/view/60428c84ddcba5f0627bb6e4

Yellow LTC:
LTC:
LLR: -3.00 (-2.94,2.94) {0.25,1.25}
Total: 39144 W: 1431 L: 1413 D: 36300 Elo +0.16
Ptnml(0-2): 13, 1176, 17184, 1178, 21
https://tests.stockfishchess.org/tests/view/605128702433018de7a38ca1

Closes https://github.com/official-stockfish/Stockfish/pull/3397

---------

Verified for correctness by running perft on the following position:

./stockfish
position fen 4rrk1/1p1nq3/p7/2p1P1pp/3P2bp/3Q1Bn1/PPPB4/1K2R1NR w - - 40 21
go perft 6

Nodes searched: 6136386434

--------

No functional change

Author: Vizvezdenec
Date: Fri Mar 19 11:58:17 2021 +0100
Timestamp: 1616151497

Add a specific FRC correction from classical to NNUE

our net currently is not trained on FRC games, and so doesn't know about the important pattern of a bishop that is cornered in FRC.
This patch introduces a term we have in the classical evaluation for this case, and adds it to the NNUE eval.

Since fishtest doesn't support FRC right now, the patch was tested locally at STC conditions,
starting from the book of FRC starting positions.

Score of master vs patch: 993 - 2226 - 6781 [0.438] 10000

Which corresponds to approximately 40 Elo

The patch passes non-regression testing for traditional chess (where it adds one branch).

passed STC:
https://tests.stockfishchess.org/tests/view/604fa2532433018de7a38b67
LLR: 2.95 (-2.94,2.94) {-1.25,0.25}
Total: 30560 W: 2701 L: 2636 D: 25223 Elo +0.74
Ptnml(0-2): 88, 2056, 10921, 2133, 82

passed STC also in an earlier version:
https://tests.stockfishchess.org/tests/view/604f61282433018de7a38b4d

closes https://github.com/official-stockfish/Stockfish/pull/3398

No functional change

Author: Guy Vreuls
Date: Fri Mar 19 20:28:57 2021 +0100
Timestamp: 1616182137

Use reference instead of pointer for pop_lsb() signature

This patch changes the pop_lsb() signature from Square pop_lsb(Bitboard*) to
Square pop_lsb(Bitboard&). This is more idomatic for C++ style signatures.

Passed a non-regression STC test:
LLR: 2.93 (-2.94,2.94) {-1.25,0.25}
Total: 21280 W: 1928 L: 1847 D: 17505 Elo +1.32
Ptnml(0-2): 71, 1427, 7558, 1518, 66
https://tests.stockfishchess.org/tests/view/6053a1e22433018de7a38e2f

We have verified that the generated binary is identical on gcc-10.

Closes https://github.com/official-stockfish/Stockfish/pull/3404

No functional change

@lisandr wrote:

Author: Guy Vreuls
Date: Fri Mar 19 20:28:57 2021 +0100
Timestamp: 1616182137

Use reference instead of pointer for pop_lsb() signature

This patch changes the pop_lsb() signature from Square pop_lsb(Bitboard*) to
Square pop_lsb(Bitboard&). This is more idomatic for C++ style signatures.

Passed a non-regression STC test:
LLR: 2.93 (-2.94,2.94) {-1.25,0.25}
Total: 21280 W: 1928 L: 1847 D: 17505 Elo +1.32
Ptnml(0-2): 71, 1427, 7558, 1518, 66
https://tests.stockfishchess.org/tests/view/6053a1e22433018de7a38e2f

We have verified that the generated binary is identical on gcc-10.

Closes https://github.com/official-stockfish/Stockfish/pull/3404

No functional change

Good Morning
Leon, could you compile it for android? Please...

@ leonhurricaneX

thanks

@leonhurricaneX wrote:

StockFish 190321 Update for Android
https://pixeldrain.com/l/kTK3cZqG

As usual, thanks for the excellent and useful work

@leonhurricaneX wrote:

StockFish 190321 Update for Android
https://pixeldrain.com/l/kTK3cZqG

Thank's alot dear..

GBU

Author: Stéphane Nicolet
Date: Wed Mar 24 17:11:06 2021 +0100
Timestamp: 1616602266

Small cleanups (march 2021)

With help of @BM123499, @mstembera, @gvreuls, @noobpwnftw and @Fanael
Thanks!

Closes https://github.com/official-stockfish/Stockfish/pull/3405

No functional change