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Author SHA1 Message Date
joergoster
cd55c268cb Bugfix. 
Otherwise creating a new net fails.
 2020-07-07 18:51:22 +09:00
joergoster
a5af8510a5 Rework loading the net. 2020-07-07 15:13:59 +09:00
Stefan Geschwentner
7225d254f9 Add a rank based bonus for blocked pawns. 
Fix for overevaluated blocked pawns on the 5th and 6th rank.
This is a rewrite of the original idea that uses only two parameters.
Thanks to rocky640 for pointing this out.

STC:
LLR: 2.94 (-2.94,2.94) {-0.50,1.50}
Total: 50800 W: 9707 L: 9446 D: 31647
Ptnml(0-2): 831, 5851, 11822, 6018, 878
https://tests.stockfishchess.org/tests/view/5f00b4f359f6f03532894304

LTC:
LLR: 2.93 (-2.94,2.94) {0.25,1.75}
Total: 52064 W: 6477 L: 6167 D: 39420
Ptnml(0-2): 331, 4628, 15834, 4878, 361
https://tests.stockfishchess.org/tests/view/5f0115fe59f6f03532894345

closes https://github.com/official-stockfish/Stockfish/pull/2794

Bench: 4882833
 2020-07-06 17:56:18 +02:00
protonspring
c5b2a92cd1 denormalize KRKP. 
a non-functional code style change that denormalizes the KRKP endgame,
making it somewhat easier to read.

closes https://github.com/official-stockfish/Stockfish/pull/2786

No functional change
 2020-07-06 17:50:35 +02:00
nodchip
288fdc5597 Added "nodes" option to the "gensfen" command to specify the number of the nodes to be searched. 2020-07-06 17:38:43 +09:00
nodchip
85c802d0b9 Revert "use winning_percentage_wdl in learn" 
This reverts commit c964e902c5.

# Conflicts:
#	src/uci.cpp
 2020-07-06 11:07:46 +09:00
nodchip
3b535b5ade
Merge pull request #36 from tttak/WDL_20200703b 
use winning_percentage_wdl in learn
 2020-07-04 07:36:33 +09:00
nodchip
cea5240909
Merge branch 'master' into WDL_20200703b 2020-07-04 07:36:16 +09:00
tttak
5dec3e547e merge "Provide WDL statistics" 
110068808b
https://github.com/official-stockfish/Stockfish/pull/2778
https://github.com/official-stockfish/Stockfish/pull/2788
 2020-07-04 07:35:15 +09:00
SFisGOD
67818ee948 Remove passed pawn condition. 
This will help scale down relatively high eval in drawish rook endgames with passed pawn like in TCEC S18 Superfinal Game 90.

Passed STC
LLR: 2.94 (-2.94,2.94) {-1.50,0.50}
Total: 50456 W: 9644 L: 9540 D: 31272
Ptnml(0-2): 760, 5637, 12332, 5737, 762
https://tests.stockfishchess.org/tests/view/5efcb76e59f6f035328940ed

Passed LTC
LLR: 2.94 (-2.94,2.94) {-1.50,0.50}
Total: 77264 W: 9518 L: 9518 D: 58228
Ptnml(0-2): 402, 6766, 24321, 6716, 427
https://tests.stockfishchess.org/tests/view/5efd2ad759f6f03532894143

closes https://github.com/official-stockfish/Stockfish/pull/2792

Bench: 4431626
 2020-07-03 21:09:22 +02:00
Joost VandeVondele
fb83da0892 Set UCI_ShowWDL by default to false 
UCI_ShowWDL might not be shown by GUIs that don't know the option,
but crash on the WDL output, effectively making it hard for users to
turn it off and run the engine. This sets it by default to false.

fixes https://github.com/official-stockfish/Stockfish/issues/2787

closes https://github.com/official-stockfish/Stockfish/pull/2788

No functional change.
 2020-07-03 21:07:17 +02:00
Alain SAVARD
268c00b648 Use arrays 
for safe checks, outposts and king protectors in evaluate.cpp

Tested for non regression on the safe checks
https://tests.stockfishchess.org/tests/view/5ef8b75c020eec13834a9596
LLR: 2.95 (-2.94,2.94) {-1.50,0.50}
Total: 22256 W: 4283 L: 4143 D: 13830
Ptnml(0-2): 291, 2439, 5588, 2459, 351

Tested for non regression on the safe checks, outposts and king protectors
https://tests.stockfishchess.org/tests/view/5ef8e543020eec13834a95e7
LLR: 2.95 (-2.94,2.94) {-1.50,0.50}
Total: 28400 W: 5382 L: 5253 D: 17765
Ptnml(0-2): 394, 3078, 7119, 3223, 386

closes https://github.com/official-stockfish/Stockfish/pull/2785

No functional change
 2020-07-03 21:06:36 +02:00
tttak
c964e902c5 use winning_percentage_wdl in learn 2020-07-03 23:21:49 +09:00
tttak
9ce0ef3ac0 merge "Provide WDL statistics" 
110068808b
https://github.com/official-stockfish/Stockfish/pull/2778
https://github.com/official-stockfish/Stockfish/pull/2788
 2020-07-03 23:01:37 +09:00
FireFather
9c19021808 update translation 
1 line src\eval\nnue\features\half_kp.cpp
1 line src\movegen.h
 2020-07-03 09:24:15 +09:00
FireFather
c679e8f360 Update search.h 
1 line of translation
 2020-07-03 09:24:15 +09:00
joergoster
13824d8b96 Explicitly specify SSE41. 2020-07-02 16:15:39 +09:00
joergoster
145e4c2a10 Add SSE41 switch. 
This allows building modern compiles with SSE41 enabled,
which gives a nice speedup on my Bulldozer CPU.

For example:
make nnue ARCH=x86-64-modern sse41=yes -j
 2020-07-02 16:15:39 +09:00
Joost VandeVondele
110068808b Provide WDL statistics 
A number of engines, GUIs and tournaments start to report WDL estimates
along or instead of scores. This patch enables reporting of those stats
in a more or less standard way (http://www.talkchess.com/forum3/viewtopic.php?t=72140)

The model this reporting uses is based on data derived from a few million fishtest LTC games,
given a score and a game ply, a win rate is provided that matches rather closely,
especially in the intermediate range [0.05, 0.95] that data. Some data is shown at
https://github.com/glinscott/fishtest/wiki/UsefulData#win-loss-draw-statistics-of-ltc-games-on-fishtest
Making the conversion game ply dependent is important for a good fit, and is in line
with experience that a +1 score in the early midgame is more likely a win than in the late endgame.

Even when enabled, the printing of the info causes no significant overhead.

Passed STC:
LLR: 2.94 (-2.94,2.94) {-1.50,0.50}
Total: 197112 W: 37226 L: 37347 D: 122539
Ptnml(0-2): 2591, 21025, 51464, 20866, 2610
https://tests.stockfishchess.org/tests/view/5ef79ef4f993893290cc146b

closes https://github.com/official-stockfish/Stockfish/pull/2778

No functional change
 2020-07-01 07:33:05 +02:00
nodchip
c8262f8aec Fixed a compile error. 2020-06-30 15:58:51 +09:00
tttak
486f72af54 バグ修正（learn convert_bin_from_pgn-extract） 2020-06-30 14:01:04 +09:00
tttak
fda3945c07 learn convert_bin_from_pgn-extractコマンドを追加 
http://rebel13.nl/download/data.html
Download Selected Lichess games
pgn-extract --fencomments -Wlalg --nochecks --nomovenumbers --noresults -w500000 -N -V -o comp-2019-06.txt comp-2019-06.pgn
stockfish.exe
learn convert_bin_from_pgn-extract pgn_eval_side_to_move 0 output_file_name fens_comp-2019-06.bin comp-2019-06.txt

https://github.com/glinscott/fishtest/wiki/PGN-files-of-games-played-on-fishtest
pgn-extract --fencomments -Wlalg --nochecks --nomovenumbers --noresults -w500000 -N -V -o fishtest.txt fishtest.pgn
stockfish.exe
learn convert_bin_from_pgn-extract pgn_eval_side_to_move 1 output_file_name fens_fishtest.bin fishtest.txt
 2020-06-30 14:01:04 +09:00
Stefan Geschwentner
69d3be42a1 Tweak single queen endgame scaling. 
Increase scaling factor for each minor of the opponent side of the queen.

STC:
LLR: 2.94 (-2.94,2.94) {-0.50,1.50}
Total: 14528 W: 2860 L: 2653 D: 9015
Ptnml(0-2): 217, 1632, 3408, 1741, 266
https://tests.stockfishchess.org/tests/view/5ef98384020eec13834a96a0

LTC:
LLR: 2.95 (-2.94,2.94) {0.25,1.75}
Total: 34584 W: 4371 L: 4111 D: 26102
Ptnml(0-2): 205, 3080, 10501, 3262, 244
https://tests.stockfishchess.org/tests/view/5ef99972020eec13834a96c9

closes https://github.com/official-stockfish/Stockfish/pull/2782

Bench: 4523573
 2020-06-29 20:02:58 +02:00
FireFather
8f31d74cf6 More comment translation 
including 11 files in /src
 2020-06-30 00:45:32 +09:00
FireFather
f5cc77bc7c EOL 
add eol at eof
 2020-06-29 08:27:41 +09:00
Stéphane Nicolet
c7194bd924 Scale down eval for queen imbalance 
We lower the endgame value of the evaluation when we detect that there
is only one queen left on the board (more precisely, we use a scale
factor of 37/64, or about 0.58, for the endgame part of the evaluation).
Hopefully this helps a little bit for the assessment of positions with
queen imbalance, which are one of the well-known Stockfish weaknesses.

STC:
LLR: 2.94 (-2.94,2.94) {-0.50,1.50}
Total: 21600 W: 4176 L: 3955 D: 13469
Ptnml(0-2): 351, 2457, 5003, 2598, 391
https://tests.stockfishchess.org/tests/view/5ef871b6020eec13834a94e8

LTC:
LLR: 2.97 (-2.94,2.94) {0.25,1.75}
Total: 248328 W: 30596 L: 29720 D: 188012
Ptnml(0-2): 1544, 22345, 75665, 22911, 1699
https://tests.stockfishchess.org/tests/view/5ef87aec020eec13834a94fe

Closes https://github.com/official-stockfish/Stockfish/pull/2781

Bench: 4441323
 2020-06-28 22:42:43 +02:00
Stefan Geschwentner
16836f39b2 Scale down eval for drawish rook endgames. 
STC:
LLR: 2.96 (-2.94,2.94) {-0.50,1.50}
Total: 82136 W: 15694 L: 15407 D: 51035
Ptnml(0-2): 1076, 8960, 20767, 9131, 1134
https://tests.stockfishchess.org/tests/view/5ef86cf8020eec13834a94dd

LTC:
LLR: 2.93 (-2.94,2.94) {0.25,1.75}
Total: 70200 W: 8787 L: 8440 D: 52973
Ptnml(0-2): 325, 5983, 22170, 6264, 358
https://tests.stockfishchess.org/tests/view/5ef88225020eec13834a950a

closes https://github.com/official-stockfish/Stockfish/pull/2780

Bench: 4478869
 2020-06-28 22:05:09 +02:00
Stéphane Nicolet
2810a1ea85 Increase value of pawns on fifth rank 
This patch increases the endgame value of pawns on the fifth rank.
The increase is very small (+1 evaluation point, about 0.005 pawn)
for the pawns on external columns (a-b-c-f-g-h) and a bit bigger
(+7 evaluation points, about 0.033 pawn) for the pawns on d5/e5.

STC:
LLR: 2.93 (-2.94,2.94) {-0.50,1.50}
Total: 79864 W: 15331 L: 15027 D: 49506
Ptnml(0-2): 1336, 9284, 18433, 9498, 1381
https://tests.stockfishchess.org/tests/view/5ef73e2ef993893290cc0c47

LTC:
LLR: 2.94 (-2.94,2.94) {0.25,1.75}
Total: 47240 W: 5927 L: 5630 D: 35683
Ptnml(0-2): 320, 4133, 14440, 4384, 343
https://tests.stockfishchess.org/tests/view/5ef7c0c4f993893290cc14b7

closes https://github.com/official-stockfish/Stockfish/pull/2776

Bench: 4794633
 2020-06-28 22:03:10 +02:00
mstembera
547c4a216a Remove old zobrist trick for castling rights 
Removes an 8 year old micro optimization aimed at 32-bit architectures
because back then doing an xor of a Key could not be done in one instruction.
See original commit here 821e1c7

STC https://tests.stockfishchess.org/tests/view/5ef5833dde213bf647527d0c
LLR: 2.94 (-2.94,2.94) {-1.50,0.50}
Total: 162648 W: 31053 L: 31097 D: 100498
Ptnml(0-2): 2841, 18966, 37715, 19000, 2802

LTC https://tests.stockfishchess.org/tests/view/5ef7b1bbf993893290cc1489
LLR: 2.93 (-2.94,2.94) {-1.50,0.50}
Total: 62360 W: 7617 L: 7586 D: 47157
Ptnml(0-2): 423, 5662, 18994, 5663, 438

closes https://github.com/official-stockfish/Stockfish/pull/2775

bench: 4591425
 2020-06-28 22:00:19 +02:00
mstembera
de24fcebc8 Fix fragile code to use proper random 64 bit keys. 
This fixes an old issue where we want to make a position unique but only
change a small number of bits in the key instead of all 64 of them randomly.
This is fragile and can lead to non uniqueness issues in the TT.

Key make_key(uint64_t seed) takes any integer and produces a unique random 64 bit key.
It is computationally efficient and is based on a congruential pseudo random number
generator using well tested constants by Donald Knuth
(see https://en.wikipedia.org/wiki/Linear_congruential_generator)

STC https://tests.stockfishchess.org/tests/view/5ef6c78f761b685b4c724bb6
LLR: 2.95 (-2.94,2.94) {-1.50,0.50}
Total: 154320 W: 29343 L: 29376 D: 95601
Ptnml(0-2): 2543, 18170, 35891, 17889, 2667

LTC https://tests.stockfishchess.org/tests/view/5ef7d1a9020eec13834a940e
LLR: 2.95 (-2.94,2.94) {-1.50,0.50}
Total: 53488 W: 6629 L: 6584 D: 40275
Ptnml(0-2): 372, 4878, 16183, 4955, 356

closes https://github.com/official-stockfish/Stockfish/pull/2773

bench: 4626776
 2020-06-28 21:57:37 +02:00
nodchip
9dc62809c8
Merge pull request #24 from FireFather/master 
Comment translation
 2020-06-28 11:43:53 +09:00
nodchip
123dd68452
Merge branch 'master' into master 2020-06-28 11:42:23 +09:00
nodchip
f1a8580118 Merge branch 'master' of github.com:nodchip/Stockfish 2020-06-28 11:37:42 +09:00
nodchip
87c8b324f8 Simplified source code to estimate the winning ratio from an eval value. 
We need to adjust the eta again after this commit is pushed.
 2020-06-28 11:37:15 +09:00
nodchip
6324c2de75
Merge pull request #23 from joergoster/linux_sse41 
Linux sse41
 2020-06-28 10:29:14 +09:00
FireFather
aea08de018 Translation 
Files in /eval, /extra, & /learn - comments translated from Japanese to English
 2020-06-28 03:12:55 +02:00
FireFather
2f8c692caa
Merge pull request #2 from nodchip/master 
merge
 2020-06-28 01:37:01 +02:00
joergoster
96f2541191 Fix compilation under Linux with -DUSE_SSE41. 2020-06-27 19:41:13 +02:00
nodchip
cb8accada2 Merge branch 'master' of github.com:nodchip/Stockfish 2020-06-27 22:19:33 +09:00
nodchip
13eb540020 Changed the formula to calculate winning ratio to 1/(1+10^(-Eval/4)). 2020-06-27 22:19:22 +09:00
joergoster
32c204fb56 Merge branch 'master' into sf-nnue-nodchip 2020-06-27 10:57:09 +02:00
Joost VandeVondele
ca41ee6632 Revert LTO for mingw on windows. 
LTO with static linking is still only working with the latest versions of gcc,
causing problems for some devs.

on a modern mingw toolchain LTO optimizations can still be enabled as:

```
CXXFLAGS='-flto' make -j ARCH=x86-64-modern COMP=mingw profile-build
```

fixes https://github.com/official-stockfish/Stockfish/issues/2769

closes https://github.com/official-stockfish/Stockfish/pull/2774

No functional change.
 2020-06-27 10:22:27 +02:00
Niklas Fiekas
aecfca2dc2 support popcnt on armv8 
* Supports popcnt (thanks @daylen)
* bits = 64 is now the default

Tested with g++ (Ubuntu/Linaro 7.5.0-3ubuntu1~18.04) 7.5.0 on ThunderX CN8890,
yields about 9% speedup.

Also tested with clang version 6.0.0-1ubuntu2 (tags/RELEASE_600/final).

closes https://github.com/official-stockfish/Stockfish/pull/2770

No functional change.
 2020-06-27 10:19:29 +02:00
Niklas Fiekas
a84e3ac287 Simplify use_time_management() and allow composing 
like other `go` commands wtime/btime can now be composed.

`go depth 10 wtime 100`

will let the engine use standard time management but stop if depth 10 is reached.

fixes https://github.com/official-stockfish/Stockfish/issues/2767

closes https://github.com/official-stockfish/Stockfish/pull/2768

No functional change
 2020-06-27 10:06:05 +02:00
tttak
e229015127 learn convert_bin_from_pgn-extractコマンドを追加 
http://rebel13.nl/download/data.html
Download Selected Lichess games
pgn-extract --fencomments -Wlalg --nochecks --nomovenumbers --noresults -w500000 -N -V -o comp-2019-06.txt comp-2019-06.pgn
stockfish.exe
setoption name SkipLoadingEval value true
isready
learn convert_bin_from_pgn-extract output_file_name fens_comp-2019-06.bin comp-2019-06.txt
 2020-06-27 16:33:36 +09:00
nodchip
aa2dc962f5 Added use_draw_in_training_data_generation option to write out draw games to the training data. 2020-06-27 14:00:12 +09:00
rqs
4c926b8eb4 add pgn_to_plain 2020-06-27 13:17:54 +09:00
rqs
0761d9504e add convert_bin and option for draw positions 2020-06-27 13:17:54 +09:00
joergoster
2af46deede Fix include. 2020-06-26 09:12:24 +09:00
joergoster
a5fb69008c Bugfix. No legal move is either mate or stalemate. 2020-06-26 09:12:24 +09:00