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Author SHA1 Message Date
Tomasz Sobczykandnodchip e5f05fa2b9 Add a script to extract a contiguous range of entries from a .bin file. 2020-09-08 09:31:53 +09:00
Joost VandeVondeleandnodchip 6e8f82ad76 Fix small CI failures 
1) Only access UCI option if defined
2) disable -Werror for now.
3) disable a few target that don't have _mm_malloc.
4) Add profile-learn target, with small speedup.
5) just test on Linux + gcc (skip macOS, unclear openblas, skip linux+clang, unclear omp/std::filesystem).
 2020-09-08 09:14:49 +09:00
Tomasz Sobczykandnodchip e638d66bbe Only add -s flag to the linker if debug=no 2020-09-08 09:10:58 +09:00
nodchip 4cc98d80f8 Replaced the utility function to create a directory to std::filesystem. 2020-09-07 18:56:41 +09:00
nodchip e004e47e5a Commented out an unused function parameter to remove a compile warning. 2020-09-07 16:21:40 +09:00
Joost VandeVondeleandnodchip bccc71afb4 fix openblas package name? 2020-09-07 16:16:08 +09:00
Joost VandeVondeleandnodchip 31e8be3008 First little CI step for the learner 2020-09-07 15:46:09 +09:00
Joost VandeVondeleandnodchip e9e52faae7 Typo fix 2020-09-07 15:21:50 +09:00
Joost VandeVondeleandnodchip edbbc1a4df Remove some warnings 2020-09-07 09:20:47 +09:00
Joost VandeVondeleandnodchip 3a06de298b Define BLAS variables in Makefile 
makes it a little easier to change the BLAS library used,
doesn't hardcode the mingw headers. Works on Linux with openblas installed.
Should be no change on Windows.
 2020-09-07 09:19:31 +09:00
Joost VandeVondeleandnodchip 3bf418e63f Fix some uninitialized variables with gensfen 
fixes valgrind errors as seen with:

```
setoption name Use NNUE value true
isready
gensfen depth 6 loop 10 use_draw_in_training_data_generation 1 eval_limit 32000 output_file_name training_data/training_data.bin use_raw_nnue_eval 0
quit
```

the latter script now runs without valgrind errors on linux
 2020-09-07 09:01:17 +09:00
Tomasz Sobczykandnodchip e9e6e47a93 Fix write_out_draw_game_in_training_data_generation flag not being respected. 2020-09-06 22:00:51 +09:00
Tomasz Sobczykandnodchip 0612adec41 Fix incorrect early exit in evaluate_leaf. 2020-09-05 08:43:34 +09:00
SFisGODandJoost VandeVondele d539da19d2 Use classical eval more often 
If there is a moderate imbalance, use classical eval with small probability (1/16),
as derived from the node counter.

STC:
LLR: 2.94 (-2.94,2.94) {-0.25,1.25}
Total: 32320 W: 3562 L: 3377 D: 25381
Ptnml(0-2): 144, 2609, 10478, 2776, 153
https://tests.stockfishchess.org/tests/view/5f520615ba100690c5cc5f80

LTC:
LLR: 2.95 (-2.94,2.94) {0.25,1.25}
Total: 21032 W: 1116 L: 974 D: 18942
Ptnml(0-2): 20, 837, 8664, 971, 24
https://tests.stockfishchess.org/tests/view/5f522eaaba100690c5cc5f8c

closes https://github.com/official-stockfish/Stockfish/pull/3107

Bench: 4109324
 2020-09-04 18:58:34 +02:00
VizvezdenecandJoost VandeVondele 9a063fc3cb Adjust penalty on refuted early quiet moves 
This patch changes how previous early moves are penalized in case
search finds a best move. Here, the first quiet move that was not
a transposition table move is penalized.

passed STC
https://tests.stockfishchess.org/tests/view/5f51d839ba100690c5cc5f69
LLR: 2.94 (-2.94,2.94) {-0.25,1.25}
Total: 10088 W: 1150 L: 997 D: 7941
Ptnml(0-2): 41, 772, 3278, 899, 54

passed LTC
https://tests.stockfishchess.org/tests/view/5f51e435ba100690c5cc5f76
LLR: 2.93 (-2.94,2.94) {0.25,1.25}
Total: 30808 W: 1564 L: 1405 D: 27839
Ptnml(0-2): 19, 1245, 12717, 1404, 19

closes https://github.com/official-stockfish/Stockfish/pull/3106

bench 3983758
 2020-09-04 18:52:46 +02:00
Sergio VieriandJoost VandeVondele 9cc482c788 Update default net to nn-308d71810dff.nnue 
equivalent to 20200903-1739

Net trained from scratch, so it has quite different features extracted compared to the previous net (82215d0fd0df).

STC:
LLR: 2.98 (-2.94,2.94) {-0.25,1.25}
Total: 108328 W: 14048 L: 13719 D: 80561
Ptnml(0-2): 842, 10039, 32062, 10390, 831
https://tests.stockfishchess.org/tests/view/5f50e053ba100690c5cc5f00

LTC:
LLR: 2.96 (-2.94,2.94) {0.25,1.25}
Total: 13872 W: 1059 L: 890 D: 11923
Ptnml(0-2): 30, 724, 5270, 871, 41
https://tests.stockfishchess.org/tests/view/5f51821fba100690c5cc5f36

closes https://github.com/official-stockfish/Stockfish/pull/3104

Bench: 3832716
 2020-09-04 08:03:43 +02:00
VoyagerOneandJoost VandeVondele 2a69611509 LMR Simplification 
remove reduction at non-check cut nodes for second move at low depths

STC:
LLR: 2.95 (-2.94,2.94) {-1.25,0.25}
Total: 61712 W: 6594 L: 6543 D: 48575
Ptnml(0-2): 293, 5085, 20082, 5070, 326
https://tests.stockfishchess.org/tests/view/5f5007d6ba100690c5cc5ea9

LTC:
LLR: 2.94 (-2.94,2.94) {-0.75,0.25}
Total: 57544 W: 2983 L: 2925 D: 51636
Ptnml(0-2): 47, 2568, 23495, 2604, 58
https://tests.stockfishchess.org/tests/view/5f50c597ba100690c5cc5ef7

closes https://github.com/official-stockfish/Stockfish/pull/3103

Bench: 3952302
 2020-09-04 08:00:45 +02:00
Unai CorzoandJoost VandeVondele d6530f7d49 Simplify singularQuietLMR 
remove formerPV dependence

STC https://tests.stockfishchess.org/tests/view/5f4cb922ba100690c5cc5d35
LLR: 2.96 (-2.94,2.94) {-1.25,0.25}
Total: 113672 W: 12347 L: 12368 D: 88957
Ptnml(0-2): 566, 9537, 36699, 9420, 614

LTC https://tests.stockfishchess.org/tests/view/5f4e8474ba100690c5cc5e12
LLR: 2.93 (-2.94,2.94) {-0.75,0.25}
Total: 43032 W: 2298 L: 2227 D: 38507
Ptnml(0-2): 45, 1940, 17475, 2011, 45

closes https://github.com/official-stockfish/Stockfish/pull/3102

bench: 3290084
 2020-09-04 07:58:13 +02:00
Unai CorzoandJoost VandeVondele 0e1f734b05 Less pruning in qsearch 
do not prune moves that give discovery checks, even if with negative SSE.

STC https://tests.stockfishchess.org/tests/view/5f4cb5e8ba100690c5cc5d25
LLR: 2.96 (-2.94,2.94) {-0.25,1.25}
Total: 91328 W: 9940 L: 9667 D: 71721
Ptnml(0-2): 491, 7345, 29693, 7670, 465

LTC https://tests.stockfishchess.org/tests/view/5f4dbc2eba100690c5cc5dac
LLR: 2.97 (-2.94,2.94) {0.25,1.25}
Total: 52448 W: 2799 L: 2586 D: 47063
Ptnml(0-2): 53, 2220, 21459, 2445, 47

closes https://github.com/official-stockfish/Stockfish/pull/3098

bench: 4031192
 2020-09-04 07:55:41 +02:00
Joost VandeVondele 571c2d6d8d Restore development version 
have fun!

No functional change
 2020-09-04 07:46:06 +02:00
Tomasz Sobczykandnodchip 327e92aefe Remove trailing whitespaces. 2020-09-03 19:22:52 +09:00
Tomasz Sobczykandnodchip 2688194d44 Fix #91 2020-09-03 19:22:03 +09:00
Tomasz Sobczykandnodchip 9d5dc3d33f Fix compilation issues. 2020-09-03 19:21:27 +09:00
Joost VandeVondele c306d83869 Stockfish 12 
Official release version of Stockfish 12

Bench: 3624569

-----------------------

It is our pleasure to release Stockfish 12 to users world-wide

Downloads will be freely available at

https://stockfishchess.org/download/

This version 12 of Stockfish plays significantly stronger than
any of its predecessors. In a match against Stockfish 11,
Stockfish 12 will typically win at least ten times more game pairs
than it loses.

This jump in strength, visible in regular progression tests during
development[1], results from the introduction of an efficiently
updatable neural network (NNUE) for the evaluation in Stockfish[2],
and associated tuning of the engine as a whole. The concept of the
NNUE evaluation was first introduced in shogi, and ported to
Stockfish afterward. Stockfish remains a CPU-only engine, since the
NNUE networks can be very efficiently evaluated on CPUs. The
recommended parameters of the NNUE network are embedded in
distributed binaries, and Stockfish will use NNUE by default.

Both the NNUE and the classical evaluations are available, and
can be used to assign values to positions that are later used in
alpha-beta (PVS) search to find the best move. The classical
evaluation computes this value as a function of various chess
concepts, handcrafted by experts, tested and tuned using fishtest.
The NNUE evaluation computes this value with a neural network based
on basic inputs. The network is optimized and trained on the
evaluations of millions of positions.

The Stockfish project builds on a thriving community of enthusiasts
that contribute their expertise, time, and resources to build a free
and open source chess engine that is robust, widely available, and
very strong. We invite chess fans to join the fishtest testing
framework and programmers to contribute on github[3].

Stay safe and enjoy chess!

The Stockfish team

[1] https://github.com/glinscott/fishtest/wiki/Regression-Tests
[2] https://github.com/official-stockfish/Stockfish/commit/84f3e867903f62480c33243dd0ecbffd342796fc
[3] https://stockfishchess.org/get-involved/
sf_12 		2020-09-02 16:19:30 +02:00
Joost VandeVondele aa2de71230 Update CPU contributors list 
with fishtest data of Sept. 2 2020

closes https://github.com/official-stockfish/Stockfish/pull/3095

No functional change
 2020-09-02 16:18:58 +02:00
Tomasz Sobczykandnodchip c17f2b15fd General cleanup of learner.cpp. 2020-09-02 23:08:22 +09:00
Joost VandeVondele be87517734 Only use MADV_RANDOM if defined 
needed to compile on Haiku.

fixes https://github.com/official-stockfish/Stockfish/issues/3093

closes https://github.com/official-stockfish/Stockfish/pull/3094

No functional change
 2020-09-02 07:32:10 +02:00
VoyagerOneandJoost VandeVondele a8bbaa1795 LMR Root Node Simplification 
Simplify LMR at Root node

STC:
LLR: 2.94 (-2.94,2.94) {-1.25,0.25}
Total: 71520 W: 7649 L: 7614 D: 56257
Ptnml(0-2): 346, 5845, 23349, 5868, 352
https://tests.stockfishchess.org/tests/view/5f4be8c0ba100690c5cc5cbb

LTC:
LLR: 2.95 (-2.94,2.94) {-0.75,0.25}
Total: 74832 W: 3997 L: 3948 D: 66887
Ptnml(0-2): 77, 3422, 30362, 3485, 70
https://tests.stockfishchess.org/tests/view/5f4c603eba100690c5cc5d0e

closes https://github.com/official-stockfish/Stockfish/pull/3091

Bench: 3624569
 2020-09-01 09:31:40 +02:00
Joost VandeVondele 61381372ec Always print an info line before a bestmove 
if very few nodes are being searched before a bestmove is reported,
an info line might be missing.

fixes https://github.com/official-stockfish/Stockfish/issues/2757

closes https://github.com/official-stockfish/Stockfish/pull/3088

no functional change
 2020-09-01 09:26:56 +02:00
mstemberaandJoost VandeVondele a057f170c6 Use llvm linker with clang on windows for LTO. 
other linkers might fail to link during the LTO phase.

The linker might have to be installed using
`pacman -Syu mingw-w64-x86_64-lld`

closes https://github.com/official-stockfish/Stockfish/pull/3084

No functional change.
 2020-09-01 09:26:08 +02:00
mstemberaandJoost VandeVondele a0afe32d16 Use stable sort to make sure bench with TB yields same results everywhere. 
std::sort() is not stable so different implementations can produce different results:
use the stable version instead.

Observed for '8/6k1/5r2/8/8/8/1K6/Q7 w - - 0 1' yielding different bench results for gcc and MSVC
and 3-4-5 syzygy TB prior to this patch.

closes https://github.com/official-stockfish/Stockfish/pull/3083

No functional change.
 2020-09-01 09:25:44 +02:00
FauziAkramandJoost VandeVondele e0bafa1911 Update parametes in classical evaluation. 
Passed STC (NNUE=False):
https://tests.stockfishchess.org/tests/view/5f42edfe5089a564a10d84a0
LLR: 2.96 (-2.94,2.94) {-0.25,1.25}
Total: 13840 W: 2591 L: 2336 D: 8913
Ptnml(0-2): 194, 1453, 3387, 1676, 210

Passed LTC (NNUE=False):
https://tests.stockfishchess.org/tests/view/5f4369795089a564a10d84d8
LLR: 2.95 (-2.94,2.94) {0.25,1.25}
Total: 159744 W: 19430 L: 18850 D: 121464
Ptnml(0-2): 960, 14185, 49030, 14709, 988

closes https://github.com/official-stockfish/Stockfish/pull/3080

bench: 3736029
 2020-08-30 14:22:07 +02:00
VoyagerOneandJoost VandeVondele 9b5b9ec9a6 QS Pruning Simplification 
Remove depth dependence in QS pruning

STC:
LLR: 2.95 (-2.94,2.94) {-1.25,0.25}
Total: 40536 W: 4442 L: 4358 D: 31736
Ptnml(0-2): 209, 3330, 13118, 3390, 221
https://tests.stockfishchess.org/tests/view/5f49035b3def6407861152f9

LTC:
LLR: 2.95 (-2.94,2.94) {-0.75,0.25}
Total: 97104 W: 5164 L: 5130 D: 86810
Ptnml(0-2): 103, 4478, 39377, 4470, 124
https://tests.stockfishchess.org/tests/view/5f4939d53def640786115322

closes https://github.com/official-stockfish/Stockfish/pull/3077

Bench: 3865238
 2020-08-30 14:17:23 +02:00
MJZ1977andJoost VandeVondele c02b3a4c7a Add / remove leaves from search tree ttPv 
add if previous leaf is in search tree and we didn't find a counter move
else remove the position if the leaf is the last one in search tree.

STC : https://tests.stockfishchess.org/tests/view/5f49203c3def640786115314
LLR: 2.95 (-2.94,2.94) {-0.25,1.25}
Total: 29968 W: 3381 L: 3195 D: 23392
Ptnml(0-2): 146, 2432, 9671, 2560, 175

LTC : https://tests.stockfishchess.org/tests/view/5f494bea3def640786115336
LLR: 2.96 (-2.94,2.94) {0.25,1.25}
Total: 84952 W: 4619 L: 4333 D: 76000
Ptnml(0-2): 86, 3765, 34481, 4065, 79

closes https://github.com/official-stockfish/Stockfish/pull/3075

Bench 3527337
 2020-08-30 14:13:16 +02:00
Unai CorzoandJoost VandeVondele d90d893b5e Reintroduce depth reduction 
Reintroduce depth reduction if the position is not in TT.

STC https://tests.stockfishchess.org/tests/view/5f4652e85089a564a10d868c
LLR: 2.97 (-2.94,2.94) {-0.25,1.25}
Total: 40240 W: 4535 L: 4331 D: 31374
Ptnml(0-2): 215, 3276, 12969, 3410, 250

LTC https://tests.stockfishchess.org/tests/view/5f46ca5e5089a564a10d86f3
LLR: 2.93 (-2.94,2.94) {0.25,1.25}
Total: 63096 W: 3426 L: 3188 D: 56482
Ptnml(0-2): 51, 2798, 25645, 2970, 84

closes https://github.com/official-stockfish/Stockfish/pull/3072

bench: 3611906
 2020-08-30 14:04:29 +02:00
Joost VandeVondele e4ed7d3dd7 Cleaner make help 
do not print details if ARCH is an empty string. Follow up for b0b4ca17db

https://github.com/official-stockfish/Stockfish/pull/3071

No functional change
 2020-08-30 14:03:02 +02:00
nodchip 7d6668515c Added -static link option to the learn and profile-learn targets. 2020-08-30 14:54:07 +09:00
nodchipandGitHub bc90567e09 Merge pull request #94 from nodchip/nnue-player-merge-2020-08-28 
Nnue player merge 2020 08 28
 2020-08-30 09:27:12 +09:00
Stéphane NicoletandJoost VandeVondele 406979ea12 Embed default net, and simplify using non-default nets 
covers the most important cases from the user perspective:

It embeds the default net in the binary, so a download of that binary will result
in a working engine with the default net. The engine will be functional in the default mode
without any additional user action.

It allows non-default nets to be used, which will be looked for in up to
three directories (working directory, location of the binary, and optionally a specific default directory).
This mechanism is also kept for those developers that use MSVC,
the one compiler that doesn't have an easy mechanism for embedding data.

It is possible to disable embedding, and instead specify a specific directory, e.g. linux distros might want to use
CXXFLAGS="-DNNUE_EMBEDDING_OFF -DDEFAULT_NNUE_DIRECTORY=/usr/share/games/stockfish/" make -j ARCH=x86-64 profile-build

passed STC non-regression:
https://tests.stockfishchess.org/tests/view/5f4a581c150f0aef5f8ae03a
LLR: 2.95 (-2.94,2.94) {-1.25,-0.25}
Total: 66928 W: 7202 L: 7147 D: 52579
Ptnml(0-2): 291, 5309, 22211, 5360, 293

closes https://github.com/official-stockfish/Stockfish/pull/3070

fixes https://github.com/official-stockfish/Stockfish/issues/3030

No functional change.
 2020-08-29 21:56:00 +02:00
nodchipandGitHub d258662383 Update README.md 2020-08-29 09:12:10 +09:00
nodchip 9f2f31632c Fixed build errors. 2020-08-29 08:17:24 +09:00
nodchip f7bc4e6e45 Fixed compilation errors. 2020-08-29 00:56:05 +09:00
nodchip 906c18eb46 Merge branch 'master' of github.com:official-stockfish/Stockfish into nnue-player-merge-2020-08-28 
# Conflicts:
#	README.md
#	src/Makefile
#	src/search.cpp
#	src/types.h
#	src/uci.cpp
#	src/ucioption.cpp
 2020-08-28 11:26:11 +09:00
hero2017andnodchip 5637996f79 Resolve #92 
If we're defining something in a header then we should declare it.
 2020-08-28 11:20:03 +09:00
nodchipandGitHub def6ec4d16 Merge pull request #90 from tttak/wdl_20200824 
Use winning_percentage_wdl in learn
 2020-08-28 10:06:33 +09:00
tttak 03b43079eb Merge branch 'nodchip_master' into wdl_20200824 2020-08-28 09:16:07 +09:00
nodchip 763e72cc9f Changed the default value of use_raw_nnue_eval. Updated a source code comment. 2020-08-27 23:49:58 +09:00
nodchip 9fc3ff4c30 Added use_raw_nnue_eval option to return raw NNUE eval value in evaluate(). 2020-08-27 23:48:28 +09:00
VoyagerOneandJoost VandeVondele 242a7d9fea Simplify MCP in QS 
Simplify moveCount pruning in QS by removing depth dependency.

STC
LLR: 2.94 (-2.94,2.94) {-1.25,0.25}
Total: 42960 W: 4741 L: 4661 D: 33558
Ptnml(0-2): 218, 3574, 13804, 3678, 206
https://tests.stockfishchess.org/tests/view/5f42e3f75089a564a10d8493

LTC
LLR: 2.94 (-2.94,2.94) {-0.75,0.25}
Total: 66672 W: 3563 L: 3508 D: 59601
Ptnml(0-2): 71, 3064, 26996, 3149, 56
https://tests.stockfishchess.org/tests/view/5f4353285089a564a10d84d0

closes https://github.com/official-stockfish/Stockfish/pull/3067

Bench: 4074430
 2020-08-26 07:19:35 +02:00
VoyagerOneandJoost VandeVondele 95b8f3f800 Remove Reduce Depth 
Remove Reduce Depth at PV nodes.

STC:
LLR: 2.94 (-2.94,2.94) {-1.25,0.25}
Total: 56760 W: 6299 L: 6236 D: 44225
Ptnml(0-2): 286, 4843, 18076, 4872, 303
https://tests.stockfishchess.org/tests/view/5f41356087a5c3c63d8f53c9

LTC:
LLR: 2.95 (-2.94,2.94) {-0.75,0.25}
Total: 17496 W: 954 L: 865 D: 15677
Ptnml(0-2): 13, 768, 7098, 855, 14
https://tests.stockfishchess.org/tests/view/5f41bb7687a5c3c63d8f53f9

closes https://github.com/official-stockfish/Stockfish/pull/3055

Bench: 3555051
 2020-08-26 07:16:50 +02:00