Nonlinear2
da82942b54
Add functions to check for decisive scores
...
Thanks to peregrineshahin and robbyrobbyrob for their suggestions.
closes https://github.com/official-stockfish/Stockfish/pull/5696
No functional change
2024-12-08 19:48:49 +01:00
Nonlinear2
57e06be71f
Add functions to check for decisive scores
...
Thanks to peregrineshahin and robbyrobbyrob for their suggestions.
closes https://github.com/official-stockfish/Stockfish/pull/5696
No functional change
2024-12-08 19:47:02 +01:00
Daniel Monroe
70bb317afe
Bonus for a prior capture that causes a fail low.
...
This tweak adds a bonus equal to twice the stat_bonus for the current depth for a prior capture that caused a fail high, similar to the prior countermove bonus we currently have.
Passed STC
https://tests.stockfishchess.org/tests/view/673bc14b86d5ee47d953f1f2
LLR: 2.95 (-2.94,2.94) <0.00,2.00>
Total: 105824 W: 27538 L: 27118 D: 51168
Ptnml(0-2): 358, 12370, 27024, 12814, 346
Passed LTC
https://tests.stockfishchess.org/tests/view/673ccbff86d5ee47d953f2d9
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 134502 W: 34340 L: 33820 D: 66342
Ptnml(0-2): 102, 14634, 37229, 15214, 72
closes https://github.com/official-stockfish/Stockfish/pull/5695
Bench: 1107054
2024-12-08 19:46:07 +01:00
Daniel Monroe
55905e562a
Simplify movepick coefficients
...
This commit sets movepick weights for all continuation histories to 1
and doubles the weight for the main history, inspired by a recent tune.
Passed STC
https://tests.stockfishchess.org/tests/view/6735151a86d5ee47d953eaa2
LLR: 2.92 (-2.94,2.94) <-1.75,0.25>
Total: 29984 W: 7840 L: 7612 D: 14532
Ptnml(0-2): 85, 3511, 7571, 3741, 84
Passed LTC
https://tests.stockfishchess.org/tests/view/673667a986d5ee47d953ec78
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 26268 W: 6726 L: 6510 D: 13032
Ptnml(0-2): 16, 2797, 7288, 3021, 12
closes https://github.com/official-stockfish/Stockfish/pull/5680
Bench: 1130293
2024-12-08 19:45:48 +01:00
Shawn Xu
b7f17346e5
Fix Sanitizer Tests
...
closes https://github.com/official-stockfish/Stockfish/pull/5692
No functional change
2024-11-22 23:41:34 +01:00
Daniel Monroe
fb6be17ad4
Simplify statscore at captures
...
Simplify statscores for captures, setting them to 0
A recent tweak of Vizvezdenec finds substantial elo gain from giving
captures a separate statscore, which is used mainly for reductions. The
idea is that the old combination of quiet histories was inappropriate
and that a value based on the capture history is more suitable. This
simplification sets the statscore for captures to 0, suggesting that the
elo gain came from rectifying the quiet history/capture mismatch.
Passed STC (against a slightly older version of Viz's patch)
https://tests.stockfishchess.org/tests/view/673ac6e286d5ee47d953f0ec
LR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 57312 W: 14872 L: 14672 D: 27768
Ptnml(0-2): 152, 6761, 14649, 6923, 171
Passed LTC (against Viz's newest patch)
https://tests.stockfishchess.org/tests/view/673cd00686d5ee47d953f2db
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 88236 W: 22510 L: 22358 D: 43368
Ptnml(0-2): 70, 9530, 24745, 9724, 49
closes https://github.com/official-stockfish/Stockfish/pull/5691
Bench: 959947
2024-11-22 23:34:15 +01:00
Shawn Xu
4fcd78ceb4
Simplify Probcut Bonus
...
Passed STC:
LLR: 2.99 (-2.94,2.94) <-1.75,0.25>
Total: 172288 W: 44656 L: 44580 D: 83052
Ptnml(0-2): 507, 20650, 43782, 20670, 535
https://tests.stockfishchess.org/tests/view/673b74f986d5ee47d953f1a3
Passed LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 94596 W: 24098 L: 23953 D: 46545
Ptnml(0-2): 57, 10322, 26393, 10471, 55
https://tests.stockfishchess.org/tests/view/673d191886d5ee47d953f337
closes https://github.com/official-stockfish/Stockfish/pull/5688
Bench: 1031022
2024-11-22 23:31:34 +01:00
Michael Chaly
cd3c13a883
Further tweak statscore for captures
...
Even lower offset.
Passed STC:
https://tests.stockfishchess.org/tests/view/673a66d786d5ee47d953f070
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 63776 W: 16570 L: 16216 D: 30990
Ptnml(0-2): 178, 7371, 16478, 7641, 220
Passed LTC:
https://tests.stockfishchess.org/tests/view/673b2e2a86d5ee47d953f14b
LLR: 2.95 (-2.94,2.94) <0.50,2.50>
Total: 156960 W: 39999 L: 39435 D: 77526
Ptnml(0-2): 96, 16965, 43803, 17511, 105
closes https://github.com/official-stockfish/Stockfish/pull/5686
Bench: 867931
2024-11-22 23:29:37 +01:00
Guenther Demetz
d29c8bd5d4
Rewrite of 'Adjust correction history' condition
...
Current condition is convoluted and hard to understand because of
several negations. Also added 2 comments to make the concept behind the
condition better understandable.
closes https://github.com/official-stockfish/Stockfish/pull/5685
No functional change
2024-11-22 23:24:15 +01:00
FauziAkram
0282edc0b0
Simplify bonus formula
...
Give full bonus instead of half.
Passed STC:
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 23872 W: 6254 L: 6018 D: 11600
Ptnml(0-2): 80, 2691, 6152, 2939, 74
https://tests.stockfishchess.org/tests/view/673b709686d5ee47d953f19d
Passed LTC:
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 42894 W: 10924 L: 10725 D: 21245
Ptnml(0-2): 30, 4592, 12011, 4777, 37
https://tests.stockfishchess.org/tests/view/673bb50386d5ee47d953f1eb
closes https://github.com/official-stockfish/Stockfish/pull/5683
Bench: 836558
2024-11-22 23:23:42 +01:00
Michael Chaly
f129bf0de9
Tweak statscore for captures
...
Followup of a recent patch that separated statscore for captures and non-captures.
Lower value that we subtract from statscore if a move is a capture.
Passed STC:
https://tests.stockfishchess.org/tests/view/67385b6786d5ee47d953eeba
LLR: 2.93 (-2.94,2.94) <0.00,2.00>
Total: 50592 W: 13223 L: 12888 D: 24481
Ptnml(0-2): 154, 5853, 12931, 6220, 138
Passed LTC:
https://tests.stockfishchess.org/tests/view/6739056e86d5ee47d953ef3f
LLR: 2.95 (-2.94,2.94) <0.50,2.50>
Total: 23598 W: 6155 L: 5862 D: 11581
Ptnml(0-2): 16, 2466, 6543, 2757, 17
closes https://github.com/official-stockfish/Stockfish/pull/5682
Bench: 771180
2024-11-22 23:12:43 +01:00
Michael Chaly
82b092ca48
Adjust statscore for captures
...
Instead of using quiet histories use capture history with a different
offset.
Passed STC:
https://tests.stockfishchess.org/tests/view/6731d5cc86d5ee47d953e719
LLR: 2.96 (-2.94,2.94) <0.00,2.00>
Total: 428896 W: 111160 L: 110269 D: 207467
Ptnml(0-2): 1220, 50296, 110534, 51169, 1229
Passed LTC:
https://tests.stockfishchess.org/tests/view/6733d9fd86d5ee47d953e962
LLR: 2.95 (-2.94,2.94) <0.50,2.50>
Total: 105882 W: 26918 L: 26458 D: 52506
Ptnml(0-2): 66, 11430, 29482, 11904, 59
closes https://github.com/official-stockfish/Stockfish/pull/5679
Bench: 840721
2024-11-13 20:35:02 +01:00
Disservin
49138b8c33
Fix CI Docker Buildx
...
closes https://github.com/official-stockfish/Stockfish/pull/5678
No functional change
2024-11-13 20:35:02 +01:00
FauziAkram
ce2d9e27ea
Simplify big-net reevaluation
...
Passed STC:
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 37408 W: 9699 L: 9477 D: 18232
Ptnml(0-2): 130, 4326, 9577, 4534, 137
https://tests.stockfishchess.org/tests/view/672ffd8086d5ee47d953e633
Passed LTC:
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 151062 W: 38087 L: 37999 D: 74976
Ptnml(0-2): 63, 16686, 41958, 16748, 76
https://tests.stockfishchess.org/tests/view/673087aa86d5ee47d953e66b
closes https://github.com/official-stockfish/Stockfish/pull/5674
Bench: 848812
2024-11-13 20:35:02 +01:00
Linmiao Xu
070db8b3a1
Update default main net to nn-1c0000000000.nnue
...
Found by updating 489 L2 weights with values found from around
31k / 60k spsa games.
Spsa was configured to use 60k games, down from 120k games in:
https://github.com/official-stockfish/Stockfish/pull/5459
623 spsa params:
L2 weights from `nn-1cedc0ffeeee.nnue` where 24 <= |value| <= 30
A: 3000, alpha: 0.602, gamma: 0.101
weights: [-127, 127], c_end = 6
Passed STC:
https://tests.stockfishchess.org/tests/view/6728d61e86d5ee47d953dcaf
LLR: 2.93 (-2.94,2.94) <0.00,2.00>
Total: 187168 W: 48642 L: 48107 D: 90419
Ptnml(0-2): 558, 21888, 48213, 22311, 614
Passed LTC:
https://tests.stockfishchess.org/tests/view/672b018f86d5ee47d953de98
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 235074 W: 59924 L: 59202 D: 115948
Ptnml(0-2): 131, 25467, 65610, 26207, 122
closes https://github.com/official-stockfish/Stockfish/pull/5673
Bench: 898850
2024-11-13 20:35:02 +01:00
Nonlinear2
43e100ae06
Use cutnode as TT Cutoff Condition
...
At low enough depths, fail high with TT only when expected cutnode.
Passed STC:
https://tests.stockfishchess.org/tests/view/6726357b86d5ee47d953da8c
LLR: 2.93 (-2.94,2.94) <0.00,2.00>
Total: 41184 W: 10873 L: 10551 D: 19760
Ptnml(0-2): 131, 4728, 10554, 5046, 133
Passed LTC:
https://tests.stockfishchess.org/tests/view/6727326a86d5ee47d953db30
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 270888 W: 69040 L: 68243 D: 133605
Ptnml(0-2): 180, 29385, 75485, 30246, 148
closes https://github.com/official-stockfish/Stockfish/pull/5670
Bench: 805776
2024-11-13 20:35:02 +01:00
Muzhen Gaming
3d084e9164
VVLTC Search Tune
...
A single tuning run of 190k games was conducted:
https://tests.stockfishchess.org/tests/view/670f3e3786d5ee47d953c554 .
Passed VVLTC 1st sprt:
https://tests.stockfishchess.org/tests/view/672344dc86d5ee47d953d8c3
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 56768 W: 14615 L: 14323 D: 27830
Ptnml(0-2): 3, 5152, 17789, 5430, 10
Passed VVLTC 2nd sprt (rebased):
https://tests.stockfishchess.org/tests/view/6726d83786d5ee47d953db03
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 57884 W: 14885 L: 14554 D: 28445
Ptnml(0-2): 5, 5300, 17999, 5635, 3
closes https://github.com/official-stockfish/Stockfish/pull/5669
Bench: 920336
2024-11-13 20:34:53 +01:00
Shawn Xu
cc5c67c564
Introduce Fractional LMR
...
Tuning Run (90k Games):
https://tests.stockfishchess.org/tests/view/67202b1c86d5ee47d953d442
Passed STC:
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 241024 W: 62616 L: 62001 D: 116407
Ptnml(0-2): 716, 28231, 62015, 28822, 728
https://tests.stockfishchess.org/tests/view/6725196786d5ee47d953d9f2
Passed LTC:
LLR: 2.95 (-2.94,2.94) <0.50,2.50>
Total: 92532 W: 23678 L: 23246 D: 45608
Ptnml(0-2): 45, 9981, 25797, 10383, 60
https://tests.stockfishchess.org/tests/view/6727d3cb86d5ee47d953db9d
closes https://github.com/official-stockfish/Stockfish/pull/5667
Bench: 1066071
2024-11-13 20:12:47 +01:00
mstembera
f77bac3dca
Remove stale Cache::clear() method
...
closes https://github.com/official-stockfish/Stockfish/pull/5666
No functional change
2024-11-13 20:11:03 +01:00
FauziAkram
54cf226604
Revert VLTC regression from #5634
...
https://tests.stockfishchess.org/tests/view/671bf61b86d5ee47d953cf23
And thanks to @xu-shawn for suggesting running a VLTC regress test since
depth modifications affect scaling. Also, the LTC was showing a slight
regress after 680+k games ~= -0.34 , for reference:
https://tests.stockfishchess.org/tests/view/67042b1f86d5ee47d953be7c
closes https://github.com/official-stockfish/Stockfish/pull/5663
Bench: 1307308
2024-11-13 20:09:13 +01:00
Michael Chaly
ecf5646f6e
Refine definition of improving
...
This patch also allows improving flag to be true if static evaluation of
the position is good enough.
Passed STC:
https://tests.stockfishchess.org/tests/view/6720906086d5ee47d953d4d0
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 34816 W: 9172 L: 8858 D: 16786
Ptnml(0-2): 113, 3988, 8887, 4312, 108
Passed LTC:
https://tests.stockfishchess.org/tests/view/6721162686d5ee47d953d597
LLR: 2.96 (-2.94,2.94) <0.50,2.50>
Total: 145374 W: 37118 L: 36574 D: 71682
Ptnml(0-2): 91, 15875, 40212, 16417, 92
closes https://github.com/official-stockfish/Stockfish/pull/5662
Bench: 1518856
2024-11-13 20:08:14 +01:00
Shawn Xu
c2611efe5c
Move history code to a separate header
...
Since no correction histories are ever used inside Movepick, and many
existing histories are closely integrated into search, it might be more
logical to separate them into their own header. PR based on #5650
closes https://github.com/official-stockfish/Stockfish/pull/5652
No functional change
2024-11-13 20:07:15 +01:00
mstembera
16fee2a7da
Cleanup TT::hashfull()
...
closes https://github.com/official-stockfish/Stockfish/pull/5651
No functional change
2024-11-13 20:06:49 +01:00
MinetaS
24c57793e1
Remove moveCountPruning in search.cpp
...
The definition of moveCountPruning may cause confusion by implying that
the variable is unconstrained. However, once it is set to true, it
should not be reset to false, otherwise it would break the internal
logic of MovePicker.
Several patches have overlooked this constraint. For example:
https://tests.stockfishchess.org/tests/view/671e7c0486d5ee47d953d226
https://tests.stockfishchess.org/tests/view/66a1de7b4ff211be9d4eccea
The implementation approach was suggested by Disservin.
Passed non-regression STC:
LLR: 3.02 (-2.94,2.94) <-1.75,0.25>
Total: 180672 W: 47072 L: 47006 D: 86594
Ptnml(0-2): 536, 19482, 50247, 19522, 549
https://tests.stockfishchess.org/tests/view/6720df6f86d5ee47d953d542
closes https://github.com/official-stockfish/Stockfish/pull/5661
No functional change
2024-10-31 10:08:34 +01:00
FauziAkram
8681d3c2b3
Simplify Time Management Formula
...
Decreasing the number of operations
Passed STC:
LLR: 2.97 (-2.94,2.94) <-1.75,0.25>
Total: 38880 W: 10038 L: 9823 D: 19019
Ptnml(0-2): 92, 4334, 10395, 4505, 114
https://tests.stockfishchess.org/tests/view/67112bf586d5ee47d953c6be
Passed LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 242844 W: 61425 L: 61431 D: 119988
Ptnml(0-2): 145, 25175, 70797, 25151, 154
https://tests.stockfishchess.org/tests/view/6712387486d5ee47d953c737
closes https://github.com/official-stockfish/Stockfish/pull/5655
Bench: 1281912
2024-10-31 10:07:24 +01:00
Shawn Xu
4a9c980f3b
Template Corrhist
...
Avoids duplication of `using ... = Stats<int16_t,
CORRECTION_HISTORY_LIMIT, COLOR_NB, CORRECTION_HISTORY_SIZE>;`
closes https://github.com/official-stockfish/Stockfish/pull/5650
No functional change
Co-authored-by: Disservin <disservin.social@gmail.com>
2024-10-31 09:27:12 +01:00
Michael Chaly
8ef403c786
Small cleanup for stats adjustments
...
After some simplifications bonuses and maluses are the same for quiet
and non-quiet moves so it makes no sense to use quietMoveBonus/Malus,
instead use just bonus/malus.
closes https://github.com/official-stockfish/Stockfish/pull/5649
No functional change
2024-10-31 09:26:00 +01:00
Disservin
c15113554f
Speedup Makefile on Windows
...
The Makefile is notoriously slow on windows, because of new processes
being spawned I believe. This pr improves it a little bit for the help
and config-sanity targets, with the latter also improving `make -j
build` because it depends on that. On the same machine ubuntu (wsl) is
more than 3 times faster, if there are other improvements we can make
I'd be happy to hear about them. Ultimately
https://github.com/official-stockfish/Stockfish/pull/5543 also aims to
improve this I believe, but it will take some additional time before
that lands.
```
make config-sanity:
patch: 6.199s
master: 12.738s
make help:
patch: 3.1s
master: 11.49s
make -j build:
patch: 36s
master: 43.25s
make -j build:
master ubuntu: 10s
```
closes https://github.com/official-stockfish/Stockfish/pull/5642
No functional change
2024-10-31 09:25:59 +01:00
FauziAkram
2ce47573b4
Remove -stat_malus(newDepth)
...
Passed STC:
LLR: 2.97 (-2.94,2.94) <-1.75,0.25>
Total: 92544 W: 23940 L: 23778 D: 44826
Ptnml(0-2): 286, 10936, 23638, 11154, 258
https://tests.stockfishchess.org/tests/view/670c3d6986d5ee47d953c30b
Passed LTC:
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 43164 W: 10986 L: 10786 D: 21392
Ptnml(0-2): 27, 4713, 11905, 4907, 30
https://tests.stockfishchess.org/tests/view/670eda3d86d5ee47d953c51d
closes https://github.com/official-stockfish/Stockfish/pull/5639
Bench: 1281912
2024-10-31 09:25:59 +01:00
FauziAkram
b325b2c348
Simplify bestValue formula
...
Passed STC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 45888 W: 12051 L: 11841 D: 21996
Ptnml(0-2): 123, 5356, 11807, 5504, 154
https://tests.stockfishchess.org/tests/view/670bb89086d5ee47d953c2d8
Passed LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 51336 W: 13021 L: 12830 D: 25485
Ptnml(0-2): 34, 5594, 14227, 5773, 40
https://tests.stockfishchess.org/tests/view/670c587f86d5ee47d953c31b
closes https://github.com/official-stockfish/Stockfish/pull/5637
Bench: 1192999
2024-10-31 09:25:59 +01:00
FauziAkram
7f386d109e
Remove material corrHist
...
Passed STC:
LLR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 80832 W: 21150 L: 20975 D: 38707
Ptnml(0-2): 283, 9531, 20598, 9736, 268
https://tests.stockfishchess.org/tests/view/670302fe86d5ee47d953bd68
Passed LTC:
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 46008 W: 11621 L: 11423 D: 22964
Ptnml(0-2): 30, 5072, 12606, 5262, 34
https://tests.stockfishchess.org/tests/view/6704074686d5ee47d953be53
Passed LTC Rebased:
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 95814 W: 24340 L: 24195 D: 47279
Ptnml(0-2): 71, 10497, 26602, 10690, 47
https://tests.stockfishchess.org/tests/view/670ae1ac86d5ee47d953c262
closes https://github.com/official-stockfish/Stockfish/pull/5636
Bench: 1119774
2024-10-31 09:25:56 +01:00
Taras Vuk
bf2a0d5392
Simplify internal iterative reductions
...
Passed STC:
LLR: 2.92 (-2.94,2.94) <-1.75,0.25>
Total: 138656 W: 36182 L: 36074 D: 66400
Ptnml(0-2): 523, 16422, 35310, 16570, 503
https://tests.stockfishchess.org/tests/view/6702beb386d5ee47d953bd41
Passed LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 680844 W: 172021 L: 172480 D: 336343
Ptnml(0-2): 492, 76259, 187419, 75720, 532
https://tests.stockfishchess.org/tests/view/67042b1f86d5ee47d953be7c
closes https://github.com/official-stockfish/Stockfish/pull/5634
Bench: 1169252
2024-10-31 09:13:35 +01:00
FauziAkram
2f3e6198e8
Simplify optimism divisor.
...
Passed STC:
LLR: 2.97 (-2.94,2.94) <-1.75,0.25>
Total: 139360 W: 36143 L: 36033 D: 67184
Ptnml(0-2): 436, 16456, 35778, 16582, 428
https://tests.stockfishchess.org/tests/view/66fc49c786d5ee47d953b94e
Passed LTC:
LLR: 2.95 (-2.94,2.94) <-1.75,0.25>
Total: 257748 W: 65163 L: 65184 D: 127401
Ptnml(0-2): 173, 28471, 71611, 28442, 177
https://tests.stockfishchess.org/tests/view/66ff01ae86d5ee47d953bb54
Passed LTC against rebased version:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 53610 W: 13691 L: 13501 D: 26418
Ptnml(0-2): 52, 5942, 14605, 6176, 30
https://tests.stockfishchess.org/tests/view/670a9c5c86d5ee47d953c231
closes https://github.com/official-stockfish/Stockfish/pull/5633
Bench: 1282078
2024-10-31 09:12:34 +01:00
Linmiao Xu
656b2cb645
Update default main net to nn-1cedc0ffeeee.nnue
...
Created by setting output weights (256) and biases (8) of the previous main net
nn-1111cefa1111.nnue to values found with spsa after 38k / 120k games at 120+1.2
using the same method as:
https://github.com/official-stockfish/Stockfish/pull/5459
nn-1111cefa1111.nnue -> nn-1cedc0ffeeee.nnue
# weights changed: 185
mean: 0.0703 +/- 2.53
min: -6
max: 6
Passed STC:
https://tests.stockfishchess.org/tests/view/6703589b86d5ee47d953bda1
LLR: 2.93 (-2.94,2.94) <0.00,2.00>
Total: 101984 W: 26690 L: 26275 D: 49019
Ptnml(0-2): 375, 11944, 25926, 12385, 362
Passed LTC:
https://tests.stockfishchess.org/tests/view/670542d286d5ee47d953befa
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 106224 W: 27079 L: 26618 D: 52527
Ptnml(0-2): 71, 11508, 29487, 11981, 65
closes https://github.com/official-stockfish/Stockfish/pull/5632
Bench: 1351413
2024-10-31 09:12:20 +01:00
Michael Chaly
9766db8139
Make low ply history size fixed
...
Size of low ply history should always be the same, so ensure it.
closes https://github.com/official-stockfish/Stockfish/pull/5630
No functional change
2024-10-12 16:40:55 +02:00
Shawn Xu
b261df970d
Fix majorPieceKey Updates
...
Passed STC:
LLR: 2.98 (-2.94,2.94) <0.00,2.00>
Total: 476160 W: 124285 L: 123311 D: 228564
Ptnml(0-2): 1662, 56266, 121219, 57302, 1631
https://tests.stockfishchess.org/tests/view/66ea3dc186d5ee47d953ae07
Failed Yellow LTC:
LLR: -2.94 (-2.94,2.94) <0.50,2.50>
Total: 230634 W: 58525 L: 58295 D: 113814
Ptnml(0-2): 113, 25301, 64299, 25451, 153
https://tests.stockfishchess.org/tests/view/66f1825e86d5ee47d953b2ec
Passed Non-regression LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 112344 W: 28590 L: 28462 D: 55292
Ptnml(0-2): 71, 12439, 31039, 12537, 86
https://tests.stockfishchess.org/tests/view/6707474486d5ee47d953bfe3
closes https://github.com/official-stockfish/Stockfish/pull/5629
Bench: 1283457
2024-10-12 16:40:49 +02:00
Nonlinear2
aaadbe0572
Introduce mean squared score for delta adjustments
...
This patch introduces the value `meanSquaredScore`, which makes the
initial delta sensitive to unstable iterative deepening scores.
Passed STC:
https://tests.stockfishchess.org/tests/view/66fed74286d5ee47d953bb42
LLR: 2.98 (-2.94,2.94) <0.00,2.00>
Total: 71104 W: 18635 L: 18262 D: 34207
Ptnml(0-2): 234, 8365, 17993, 8714, 246
Passed LTC:
https://tests.stockfishchess.org/tests/view/6700088e86d5ee47d953bbe9
LLR: 2.95 (-2.94,2.94) <0.50,2.50>
Total: 212544 W: 54238 L: 53560 D: 104746
Ptnml(0-2): 120, 23093, 59172, 23763, 124
closes https://github.com/official-stockfish/Stockfish/pull/5627
Bench: 1395505
2024-10-12 16:40:37 +02:00
Mathias Parnaudeau
d4358ddba7
Add autodetection of ppc64 architectures
...
That allows 'make -j profile-build' work on ppc64 architectures, setting the use of
the appropriate SIMD extension, Altivec or VSX.
For VSX, gcc allows to map SSE2 intrinsics and get benefit of the existing SIMD code.
On PowerMac G5, using altivec provides a performance improvement of 30%.
On Talos 2, using vsx provides a performance improvement of 120%.
closes https://github.com/official-stockfish/Stockfish/pull/5624
No functional change
2024-10-12 16:30:44 +02:00
mstembera
76923bb6fe
Optimize magics
...
Reduce the size of the Magics table by half on modern cpu's and lay it
out to match our access pattern. Namely we typically access the magics
for the same square for both bishop and rook back to back so we want
those to be in the same cache line.
https://tests.stockfishchess.org/tests/view/6701c9b386d5ee47d953bcf4
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 121664 W: 31931 L: 31497 D: 58236
Ptnml(0-2): 395, 13658, 32322, 14032, 425
A similar patch minus the size reduction finished yellow
https://tests.stockfishchess.org/tests/view/6695f03f4ff211be9d4ec16c
LLR: -2.94 (-2.94,2.94) <0.00,2.00>
Total: 310688 W: 80940 L: 80746 D: 149002
Ptnml(0-2): 1119, 35032, 82846, 35230, 1117
closes https://github.com/official-stockfish/Stockfish/pull/5623
No functional change
2024-10-12 16:30:44 +02:00
FauziAkram
9a21e3e996
Simplify bestvalue formula
...
Passed STC:
LLR: 2.97 (-2.94,2.94) <-1.75,0.25>
Total: 163680 W: 42689 L: 42605 D: 78386
Ptnml(0-2): 619, 19555, 41386, 19683, 597
https://tests.stockfishchess.org/tests/view/66f9451386d5ee47d953b7d9
Passed LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 96498 W: 24582 L: 24438 D: 47478
Ptnml(0-2): 62, 10642, 26718, 10744, 83
https://tests.stockfishchess.org/tests/view/66fd765786d5ee47d953ba1c
closes https://github.com/official-stockfish/Stockfish/pull/5622
Bench: 1309815
2024-10-12 16:30:44 +02:00
mstembera
3348603770
Simplify previous #5608
...
https://github.com/official-stockfish/Stockfish/pull/5608
STC: https://tests.stockfishchess.org/tests/view/66fb1bab86d5ee47d953b8cc
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 25536 W: 6797 L: 6560 D: 12179
Ptnml(0-2): 93, 2953, 6460, 3148, 114
LTC https://tests.stockfishchess.org/tests/view/66fb690e86d5ee47d953b8eb
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 225114 W: 57200 L: 57188 D: 110726
Ptnml(0-2): 197, 25076, 61995, 25096, 193
closes https://github.com/official-stockfish/Stockfish/pull/5621
Bench: 1570076
2024-10-12 16:30:44 +02:00
Disservin
dce72913fe
Temporarily fix clang-format mismatch
...
closes https://github.com/official-stockfish/Stockfish/pull/5620
No functional change
2024-10-12 16:30:44 +02:00
Linmiao Xu
e046c4ef0d
Simplify evaluation scaling
...
Set digits in adjusted eval params all to 7.
Passed non-regression STC:
https://tests.stockfishchess.org/tests/view/66fc493d86d5ee47d953b94c
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 57696 W: 15098 L: 14898 D: 27700
Ptnml(0-2): 205, 6784, 14678, 6968, 213
Passed non-regression LTC:
https://tests.stockfishchess.org/tests/view/66fd4b9386d5ee47d953b9d5
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 93786 W: 23868 L: 23721 D: 46197
Ptnml(0-2): 55, 10322, 25993, 10467, 56
closes https://github.com/official-stockfish/Stockfish/pull/5618
Bench: 1277182
2024-10-12 16:30:44 +02:00
Ömer Faruk Tutkun
6592b13d56
Introduce Continuation Correction History
...
Continuation correction history uses last 2 move to correct static eval.
ContCorrHist first introduced by @martinnovaak in
Motor(https://github.com/martinnovaak/motor/pull/162 ). Earlier ideas
using last move to correct eval is introduced by @MinusKelvin in
Ice4(45daf7d9eahttps://tests.stockfishchess.org/tests/view/66f96cbc86d5ee47d953b7f7
Passed LTC:
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 97470 W: 24892 L: 24447 D: 48131
Ptnml(0-2): 63, 10631, 26915, 11050, 76
https://tests.stockfishchess.org/tests/view/66fd59bc86d5ee47d953b9ea
closes https://github.com/official-stockfish/Stockfish/pull/5617
Bench: 1143382
2024-10-12 16:30:44 +02:00
Taras Vuk
81c1d31084
Decrease probCutBeta based on opponentWorsening
...
Passed STC:
LLR: 2.97 (-2.94,2.94) <0.00,2.00>
Total: 62112 W: 16305 L: 15947 D: 29860
Ptnml(0-2): 203, 7226, 15856, 7552, 219
https://tests.stockfishchess.org/tests/view/66f85fc986d5ee47d953b71e
Passed LTC:
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 129552 W: 33223 L: 32710 D: 63619
Ptnml(0-2): 94, 14250, 35573, 14767, 92
https://tests.stockfishchess.org/tests/view/66f93fef86d5ee47d953b7d2
closes https://github.com/official-stockfish/Stockfish/pull/5615
bench: 1511354
2024-10-04 08:35:08 +02:00
Michael Chaly
7ac745a736
Refactor root history into low ply history
...
This patch changes root history to low ply history - butterfly history for plies < 4.
Doubles weight of this history for root, latter plies have lesser effect.
Passed STC:
https://tests.stockfishchess.org/tests/view/66f77d2386d5ee47d953b65d
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 180992 W: 47362 L: 46830 D: 86800
Ptnml(0-2): 554, 21499, 45928, 21891, 624
Passed LTC:
https://tests.stockfishchess.org/tests/view/66fb557986d5ee47d953b8e5
LLR: 2.95 (-2.94,2.94) <0.50,2.50>
Total: 42462 W: 11013 L: 10682 D: 20767
Ptnml(0-2): 33, 4518, 11795, 4855, 30
closes https://github.com/official-stockfish/Stockfish/pull/5614
Bench 1264335
2024-10-04 08:32:21 +02:00
Linmiao Xu
0186904f53
Remove evaluation grain
...
Passed non-regression STC:
https://tests.stockfishchess.org/tests/view/66fa345a86d5ee47d953b86e
LLR: 2.96 (-2.94,2.94) <-1.75,0.25>
Total: 39776 W: 10528 L: 10306 D: 18942
Ptnml(0-2): 134, 4674, 10063, 4870, 147
Passed non-regression LTC:
https://tests.stockfishchess.org/tests/view/66facfb886d5ee47d953b8a8
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 64230 W: 16484 L: 16305 D: 31441
Ptnml(0-2): 38, 7195, 17483, 7348, 51
closes https://github.com/official-stockfish/Stockfish/pull/5613
bench 1013135
2024-10-04 08:29:09 +02:00
Linmiao Xu
2b9154882a
Tweak 7 eval params
...
Values found from 120k / 120k spsa games at 30+0.3
Passed STC:
https://tests.stockfishchess.org/tests/view/66ecd7ce86d5ee47d953b003
LLR: 2.93 (-2.94,2.94) <0.00,2.00>
Total: 241312 W: 62994 L: 62373 D: 115945
Ptnml(0-2): 754, 28684, 61280, 29063, 875
Passed LTC:
https://tests.stockfishchess.org/tests/view/66f1f3a286d5ee47d953b331
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 304896 W: 77580 L: 76709 D: 150607
Ptnml(0-2): 198, 33413, 84360, 34274, 203
closes https://github.com/official-stockfish/Stockfish/pull/5611
bench 1173651
2024-10-01 21:02:44 +02:00
Taras Vuk
c85f802185
Tweak ttCapture reduction
...
More reduction at shallow depth for quiet moves when ttMove is a capture.
Passed STC:
LLR: 2.93 (-2.94,2.94) <0.00,2.00>
Total: 365728 W: 95896 L: 95090 D: 174742
Ptnml(0-2): 1283, 43133, 93262, 43867, 1319
https://tests.stockfishchess.org/tests/view/66edd35986d5ee47d953b0d5
Passed LTC:
LLR: 2.96 (-2.94,2.94) <0.50,2.50>
Total: 200526 W: 51197 L: 50540 D: 98789
Ptnml(0-2): 119, 21952, 55462, 22613, 117
https://tests.stockfishchess.org/tests/view/66f405dc86d5ee47d953b460
closes https://github.com/official-stockfish/Stockfish/pull/5610
bench: 1269487
2024-10-01 20:59:17 +02:00
Shawn Xu
d6043970bd
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
Ptnml(0-2): 695, 24486, 53200, 24562, 673
https://tests.stockfishchess.org/tests/view/66e9f5a886d5ee47d953ada1
Passed Non-regression LTC:
LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 99120 W: 25264 L: 25123 D: 48733
Ptnml(0-2): 66, 10803, 27675, 10956, 60
https://tests.stockfishchess.org/tests/view/66ed7ebc86d5ee47d953b056
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
Ptnml(0-2): 111, 23232, 57760, 23260, 112
https://tests.stockfishchess.org/tests/view/66f1843886d5ee47d953b2f2
closes https://github.com/official-stockfish/Stockfish/pull/5609
bench 1575189
2024-09-28 18:01:31 +02:00
