SFisGOD and Joost VandeVondele
723f48dec0
Update default net to nn-13406b1dcbe0.nnue
...
SPSA 1: https://tests.stockfishchess.org/tests/view/6134abc425b9b35584838572
Parameters: A total of 64 net biases were tuned (hidden layer 1)
Base net: nn-6762d36ad265.nnue
New net: nn-c9fdeea14cb2.nnue
SPSA 2: https://tests.stockfishchess.org/tests/view/61355b7e25b9b3558483860e
Parameters: 256 net weights and 8 net biases (output layer)
Base net: nn-c9fdeea14cb2.nnue
New net: nn-0ddc28184f4c.nnue
SPSA 3: https://tests.stockfishchess.org/tests/view/613737be0cd98ab40c0c9e4e
Parameters: A total of 256 net biases were tuned (hidden layer 2)
Base net: nn-0ddc28184f4c.nnue
New net: nn-2419828bb394.nnue
SPSA 4: https://tests.stockfishchess.org/tests/view/613966ff689039fce12e0fe7
Parameters: A total of 64 net biases were tuned (hidden layer 1)
Base net: nn-2419828bb394.nnue
New net: nn-05d9b1ee3037.nnue
SPSA 5: https://tests.stockfishchess.org/tests/view/613b4a38689039fce12e1209
Parameters: 256 net weights and 8 net biases (output layer)
Base net: nn-05d9b1ee3037.nnue
New net: nn-98c6ce0fc15f.nnue
SPSA 6: https://tests.stockfishchess.org/tests/view/613e331515591e7c9ebc3fe9
Parameters: A total of 256 net biases were tuned (hidden layer 2)
Base net: nn-98c6ce0fc15f.nnue
New net: nn-13406b1dcbe0.nnue
STC:
LLR: 2.93 (-2.94,2.94) <-0.50,2.50>
Total: 82008 W: 21044 L: 20752 D: 40212
Ptnml(0-2): 264, 9341, 21525, 9587, 287
https://tests.stockfishchess.org/tests/view/613f7c6cf29dda16fcca870c
LTC:
LLR: 2.96 (-2.94,2.94) <0.50,3.50>
Total: 182928 W: 46258 L: 45602 D: 91068
Ptnml(0-2): 107, 19448, 51712, 20076, 121
https://tests.stockfishchess.org/tests/view/613fccb97315e7c73204a48c
Closes #3703
Bench: 6658747
2021-09-15 17:50:20 +02:00
SFisGOD and Stéphane Nicolet
be63ce1bb5
Update default net to nn-6762d36ad265.nnue
...
SPSA 1: https://tests.stockfishchess.org/tests/view/612cdb1fbb4956d8b78eb5ab
Parameters: A total of 256 net biases were tuned (hidden layer 2)
Base net: nn-fe433fd8c7f6.nnue
New net: nn-5f134823db04.nnue
SPSA 2: https://tests.stockfishchess.org/tests/view/612fcde645091e810014af19
Parameters: A total of 64 net biases were tuned (hidden layer 1)
Base net: nn-5f134823db04.nnue
New net: nn-8eca5dd4e3f7.nnue
SPSA 3: https://tests.stockfishchess.org/tests/view/6130822345091e810014af61
Parameters: 256 net weights and 8 net biases (output layer)
Base net: nn-8eca5dd4e3f7.nnue
New net: nn-4556108e4f00.nnue
SPSA 4: https://tests.stockfishchess.org/tests/view/613287652ffb3c36aceb923c
Parameters: A total of 256 net biases were tuned (hidden layer 2)
Base net: nn-4556108e4f00.nnue
New net: nn-6762d36ad265.nnue
STC:
LLR: 2.96 (-2.94,2.94) <-0.50,2.50>
Total: 162776 W: 41220 L: 40807 D: 80749
Ptnml(0-2): 517, 18800, 42359, 19177, 535
https://tests.stockfishchess.org/tests/view/6134107125b9b35584838559
LTC:
LLR: 2.95 (-2.94,2.94) <0.50,3.50>
Total: 41056 W: 10428 L: 10156 D: 20472
Ptnml(0-2): 30, 4288, 11618, 4564, 28
https://tests.stockfishchess.org/tests/view/6134ad6525b9b3558483857a
closes https://github.com/official-stockfish/Stockfish/pull/3691
Bench: 5812158
2021-09-06 14:08:22 +02:00
SFisGOD and Joost VandeVondele
2807dcfab6
Update default net to nn-735bba95dec0.nnue
...
SPSA 1: https://tests.stockfishchess.org/tests/view/61286d8b62d20cf82b5ad1bd
Parameters: A total of 256 net biases were tuned (hidden layer 2)
Base net: nn-33495fe25081.nnue
New net: nn-83e3cf2af92b.nnue
SPSA 2: https://tests.stockfishchess.org/tests/view/6129cf2162d20cf82b5ad25f
Parameters: A total of 64 net biases were tuned (hidden layer 1)
Base net: nn-83e3cf2af92b.nnue
New net: nn-69a528eaef35.nnue
SPSA 3: https://tests.stockfishchess.org/tests/view/612a0dcb62d20cf82b5ad2a0
Parameters: 256 net weights and 8 net biases (output layer)
Base net: nn-69a528eaef35.nnue
New net: nn-735bba95dec0.nnue
STC:
LLR: 2.94 (-2.94,2.94) <-0.50,2.50>
Total: 95144 W: 24310 L: 23999 D: 46835
Ptnml(0-2): 232, 11059, 24748, 11232, 301
https://tests.stockfishchess.org/tests/view/612bb3be0fdf40644b4b9996
LTC:
LLR: 2.94 (-2.94,2.94) <0.50,3.50>
Total: 33632 W: 8522 L: 8271 D: 16839
Ptnml(0-2): 18, 3511, 9516, 3744, 27
https://tests.stockfishchess.org/tests/view/612ce5b9bb4956d8b78eb5b3
Closes https://github.com/official-stockfish/Stockfish/pull/3685
Bench: 5600615
2021-08-31 12:56:19 +02:00
SFisGOD and Joost VandeVondele
69eede7d08
Update default net to nn-33495fe25081.nnue
...
STC:
LLR: 2.95 (-2.94,2.94) <-0.50,2.50>
Total: 37368 W: 9621 L: 9391 D: 18356
Ptnml(0-2): 117, 4287, 9664, 4481, 135
https://tests.stockfishchess.org/tests/view/612768165318138ee1204977
LTC:
LLR: 2.94 (-2.94,2.94) <0.50,3.50>
Total: 13328 W: 3446 L: 3246 D: 6636
Ptnml(0-2): 11, 1383, 3682, 1571, 17
https://tests.stockfishchess.org/tests/view/6127dc8d62d20cf82b5ad196
Closes https://github.com/official-stockfish/Stockfish/pull/3679
Bench: 5179347
2021-08-27 07:51:26 +02:00
SFisGOD and Joost VandeVondele
590447d7a1
Update default net to nn-517c4f68b5df.nnue
...
SPSA: https://tests.stockfishchess.org/tests/view/611cf0da4977aa1525c9ca03
Parameters: 256 net weights and 8 net biases (output layer)
Base net: nn-ac5605a608d6.nnue
New net: nn-517c4f68b5df.nnue
STC:
LLR: 2.93 (-2.94,2.94) <-0.50,2.50>
Total: 11600 W: 998 L: 851 D: 9751
Ptnml(0-2): 30, 705, 4186, 846, 33
https://tests.stockfishchess.org/tests/view/611f84524977aa1525c9cb5b
LTC:
LLR: 2.95 (-2.94,2.94) <0.50,3.50>
Total: 9360 W: 338 L: 243 D: 8779
Ptnml(0-2): 0, 220, 4151, 303, 6
https://tests.stockfishchess.org/tests/view/611f8c5b4977aa1525c9cb64
closes https://github.com/official-stockfish/Stockfish/pull/3667
Bench: 4844618
2021-08-22 09:09:58 +02:00
SFisGOD and Joost VandeVondele
73ef5b8c4a
Update default net to nn-46832cfbead3.nnue
...
SPSA 1: https://tests.stockfishchess.org/tests/view/6100e7f096b86d98abf6a832
Parameters: A total of 256 net weights and 8 net biases were tuned (output layer)
Base net: nn-56a5f1c4173a.nnue
New net: nn-ec3c8e029926.nnue
SPSA 2: https://tests.stockfishchess.org/tests/view/610733caafad2da4f4ae3da7
Parameters: A total of 256 net biases were tuned (hidden layer 2)
Base net: nn-ec3c8e029926.nnue
New net: nn-46832cfbead3.nnue
STC:
LLR: 2.98 (-2.94,2.94) <-0.50,2.50>
Total: 50520 W: 3953 L: 3765 D: 42802
Ptnml(0-2): 138, 3063, 18678, 3235, 146
https://tests.stockfishchess.org/tests/view/610a79692a8a49ac5be793f4
LTC:
LLR: 2.94 (-2.94,2.94) <0.50,3.50>
Total: 57256 W: 1723 L: 1566 D: 53967
Ptnml(0-2): 12, 1442, 25568, 1589, 17
https://tests.stockfishchess.org/tests/view/610ac5bb2a8a49ac5be79434
Closes https://github.com/official-stockfish/Stockfish/pull/3642
Bench: 5359314
2021-08-05 08:52:07 +02:00
SFisGOD and Joost VandeVondele
e973eee919
Update default net to nn-56a5f1c4173a.nnue
...
SPSA 1: https://tests.stockfishchess.org/tests/view/60fd24efd8a6b65b2f3a796e
Parameters: A total of 256 net biases were tuned (hidden layer 2)
New best values: Half of the changes from the tuning run
New net: nn-5992d3ba79f3.nnue
SPSA 2: https://tests.stockfishchess.org/tests/view/60fec7d6d8a6b65b2f3a7aa2
Parameters: A total of 128 net biases were tuned (hidden layer 1)
New best values: Half of the changes from the tuning run
New net: nn-56a5f1c4173a.nnue
STC:
LLR: 2.94 (-2.94,2.94) <-0.50,2.50>
Total: 140392 W: 10863 L: 10578 D: 118951
Ptnml(0-2): 347, 8754, 51718, 9021, 356
https://tests.stockfishchess.org/tests/view/610037e396b86d98abf6a79e
LTC:
LLR: 2.95 (-2.94,2.94) <0.50,3.50>
Total: 14216 W: 454 L: 355 D: 13407
Ptnml(0-2): 4, 323, 6356, 420, 5
https://tests.stockfishchess.org/tests/view/61019995afad2da4f4ae3a3c
Closes #3633
Bench: 4801359
2021-07-29 07:35:13 +02:00
SFisGOD and Joost VandeVondele
237ed1ef8f
Update default net to nn-26abeed38351.nnue
...
SPSA: https://tests.stockfishchess.org/tests/view/60fba335d8a6b65b2f3a7891
New best values: Half of the changes from the tuning run.
Setting: nodestime=300 with 10+0.1 (approximate real TC is 2.5 seconds)
The rest is the same as described in #3593
The change from nodestime=600 to 300 was suggested by gekkehenker to prevent time losses for some slow workers
SFisGOD@94cd757#commitcomment-53324840
STC:
LLR: 2.96 (-2.94,2.94) <-0.50,2.50>
Total: 67448 W: 5241 L: 5036 D: 57171
Ptnml(0-2): 151, 4198, 24827, 4391, 157
https://tests.stockfishchess.org/tests/view/60fd50f2d8a6b65b2f3a798e
LTC:
LLR: 2.93 (-2.94,2.94) <0.50,3.50>
Total: 48752 W: 1504 L: 1358 D: 45890
Ptnml(0-2): 13, 1226, 21754, 1368, 15
https://tests.stockfishchess.org/tests/view/60fd7bb2d8a6b65b2f3a79a9
Closes https://github.com/official-stockfish/Stockfish/pull/3630
Bench: 5124774
2021-07-26 07:52:59 +02:00
SFisGOD and Joost VandeVondele
8fc297c506
Update default net to nn-9e3c6298299a.nnue
...
Optimization of nn-956480d8378f.nnue using SPSA
https://tests.stockfishchess.org/tests/view/60da2bf63beab81350ac9fe7
Same method as described in PR #3593
STC:
LLR: 2.93 (-2.94,2.94) <-0.50,2.50>
Total: 17792 W: 1525 L: 1372 D: 14895
Ptnml(0-2): 28, 1156, 6401, 1257, 54
https://tests.stockfishchess.org/tests/view/60deffc59ea99d7c2d693c19
LTC:
LLR: 2.96 (-2.94,2.94) <0.50,3.50>
Total: 36544 W: 1245 L: 1109 D: 34190
Ptnml(0-2): 12, 988, 16139, 1118, 15
https://tests.stockfishchess.org/tests/view/60df11339ea99d7c2d693c22
closes https://github.com/official-stockfish/Stockfish/pull/3601
Bench: 4687476
2021-07-03 10:03:32 +02:00
SFisGOD and Joost VandeVondele
49283d3a66
Update default net to nn-3475407dc199.nnue
...
Optimization of eight subnetwork output layers of Michael's nn-190f102a22c3.nnue using SPSA
https://tests.stockfishchess.org/tests/view/60d5510642a522cc50282ef3
Parameters: A total of 256 net weights and 8 net biases were tuned
New best values: The raw values at the end of the tuning run were used (800k games, 5 seconds TC)
Settings: default ck value and SPSA A is 30,000 (3.75% of the total number of games)
STC:
LLR: 2.94 (-2.94,2.94) <-0.50,2.50>
Total: 29064 W: 2435 L: 2269 D: 24360
Ptnml(0-2): 72, 1857, 10505, 2029, 69
https://tests.stockfishchess.org/tests/view/60d8ea123beab81350ac9eb6
LTC:
LLR: 2.93 (-2.94,2.94) <0.50,3.50>
Total: 61848 W: 2055 L: 1884 D: 57909
Ptnml(0-2): 18, 1708, 27310, 1861, 27
https://tests.stockfishchess.org/tests/view/60d8f0393beab81350ac9ec6
closes https://github.com/official-stockfish/Stockfish/pull/3593
Bench: 4770936
2021-06-28 21:31:58 +02:00
SFisGOD and Joost VandeVondele
86afb6a7cf
Update default net to nn-aa9d7eeb397e.nnue
...
Optimization of vondele's nn-33c9d39e5eb6.nnue using SPSA
https://tests.stockfishchess.org/tests/view/60ca68be457376eb8bcab28b
Setting: ck values are default based on how large the parameters are
The new values for this net are the raw values at the end of the tuning (80k games)
The significant changes are in buckets 1 and 2 (5-12 pieces) so the main difference is in playing endgames if we compare it to nn-33c9. There is also change in bucket 7 (29-32 pieces) but not as substantial as the changes in buckets 1 and 2. If we interpret the changes based on an experiment a few months ago, this new net plays more optimistically during endgames and less optimistically during openings.
STC:
LLR: 2.93 (-2.94,2.94) <-0.50,2.50>
Total: 49504 W: 4246 L: 4053 D: 41205
Ptnml(0-2): 140, 3282, 17749, 3407, 174
https://tests.stockfishchess.org/tests/view/60cbd752457376eb8bcab478
LTC:
LLR: 2.95 (-2.94,2.94) <0.50,3.50>
Total: 88720 W: 4926 L: 4651 D: 79143
Ptnml(0-2): 105, 4048, 35793, 4295, 119
https://tests.stockfishchess.org/tests/view/60cc7828457376eb8bcab4fa
closes https://github.com/official-stockfish/Stockfish/pull/3566
Bench: 4758885
2021-06-18 21:29:14 +02:00
SFisGOD and Joost VandeVondele
7364006757
Update default net to nn-62ef826d1a6d.nnue
...
Include scaling change as suggested by Dietrich Kappe,
the one who trained net for Komodo. According to him,
some nets may require different scaling in order to utilize its full strength.
STC:
LLR: 2.93 (-2.94,2.94) {-0.25,1.25}
Total: 99856 W: 9669 L: 9401 D: 80786
Ptnml(0-2): 374, 7468, 34037, 7614, 435
https://tests.stockfishchess.org/tests/view/5fc2697642a050a89f02c8ec
LTC:
LLR: 2.96 (-2.94,2.94) {0.25,1.25}
Total: 29840 W: 1220 L: 1081 D: 27539
Ptnml(0-2): 10, 969, 12827, 1100, 14
https://tests.stockfishchess.org/tests/view/5fc2ea5142a050a89f02c957
Bench: 3561701
2020-11-29 16:54:06 +01:00
SFisGOD and Stéphane Nicolet
285bf7041a
Increase reduction at root
...
when the best move does not change frequently
STC:
LLR: 2.94 (-2.94,2.94) {-0.25,1.25}
Total: 51320 W: 5159 L: 4956 D: 41205
Ptnml(0-2): 215, 3897, 17242, 4082, 224
https://tests.stockfishchess.org/tests/view/5faa072367cbf42301d6a767
LTC:
LLR: 2.98 (-2.94,2.94) {0.25,1.25}
Total: 15952 W: 762 L: 642 D: 14548
Ptnml(0-2): 8, 561, 6725, 667, 15
https://tests.stockfishchess.org/tests/view/5faa4c3567cbf42301d6a794
closes https://github.com/official-stockfish/Stockfish/pull/3225
Bench: 3954692
2020-11-12 12:49:03 +01:00
SFisGOD and Stéphane Nicolet
32edb1d009
Update default net to nn-c3ca321c51c9.nnue
...
Optimization of the net biases of the 32 x 32 layer and the output layer.
Tuning of 32 x 32 layer (200k games, 5 seconds TC)
https://tests.stockfishchess.org/tests/view/5f9aaf266a2c112b60691c68
STC:
LLR: 2.95 (-2.94,2.94) {-0.25,1.25}
Total: 41848 W: 4665 L: 4461 D: 32722
Ptnml(0-2): 239, 3308, 13659, 3446, 272
https://tests.stockfishchess.org/tests/view/5fa5ef5a936c54e11ec9954f
LTC:
LLR: 2.94 (-2.94,2.94) {0.25,1.25}
Total: 88008 W: 4045 L: 3768 D: 80195
Ptnml(0-2): 69, 3339, 36908, 3622, 66
https://tests.stockfishchess.org/tests/view/5fa62a78936c54e11ec99577
closes https://github.com/official-stockfish/Stockfish/pull/3220
Bench: 3649288
2020-11-08 08:36:16 +01:00
SFisGOD and Joost VandeVondele
6328135264
Update default net to nn-2eb2e0707c2b.nnue
...
Optimization of the net weights of the 32 x 32 layer (1024 parameters) and net biases of the 512 x 32 layer (32 parameters) using SPSA.
Tuning of 32 x 32 Layer (800,000 games, 5 seconds time control):
https://tests.stockfishchess.org/tests/view/5f942040d3978d7e86f1aa05
Tuning of 512 x 32 Layer (80,000 games, 20 seconds time control):
https://tests.stockfishchess.org/tests/view/5f8f926d2c92c7fe3a8c608b
STC:
LLR: 2.96 (-2.94,2.94) {-0.25,1.25}
Total: 17336 W: 1918 L: 1754 D: 13664
Ptnml(0-2): 79, 1344, 5672, 1480, 93
https://tests.stockfishchess.org/tests/view/5f9882346a2c112b60691b34
LTC:
LLR: 2.94 (-2.94,2.94) {0.25,1.25}
Total: 37304 W: 1822 L: 1651 D: 33831
Ptnml(0-2): 27, 1461, 15501, 1640, 23
https://tests.stockfishchess.org/tests/view/5f98a4b36a2c112b60691b40
closes https://github.com/official-stockfish/Stockfish/pull/3201
Bench: 3403528
2020-10-28 08:13:34 +01:00
SFisGOD and Joost VandeVondele
5efbaaba77
Update default net to nn-baeb9ef2d183.nnue
...
Further optimization of Sergio's nn-03744f8d56d8.nnue
This patch is the result of collaboration with Joost VandeVondele.
STC:
LLR: 2.96 (-2.94,2.94) {-0.25,1.25}
Total: 37000 W: 4145 L: 3947 D: 28908
Ptnml(0-2): 191, 3016, 11912, 3166, 215
https://tests.stockfishchess.org/tests/view/5f71e7983b22d6afa5069475
LTC:
LLR: 2.96 (-2.94,2.94) {0.25,1.25}
Total: 60224 W: 2992 L: 2769 D: 54463
Ptnml(0-2): 48, 2420, 24956, 2637, 51
https://tests.stockfishchess.org/tests/view/5f722bb83b22d6afa506998f
closes https://github.com/official-stockfish/Stockfish/pull/3161
Bench: 3720073
2020-09-28 22:29:31 +02:00
SFisGOD and Joost VandeVondele
f66c381f11
Switch to NNUE eval probabilistically for OCB
...
Introduce a small chance of switching to NNUE if PSQ imbalance is large but we have opposite colored bishops and the classical eval is struggling to win.
STC:
LLR: 2.94 (-2.94,2.94) {-0.25,1.25}
Total: 25304 W: 3179 L: 2983 D: 19142
Ptnml(0-2): 172, 2171, 7781, 2345, 183
https://tests.stockfishchess.org/tests/view/5f6b14dec7759d4ee307cfe3
LTC:
LLR: 2.94 (-2.94,2.94) {0.25,1.25}
Total: 84680 W: 4846 L: 4556 D: 75278
Ptnml(0-2): 89, 3933, 34011, 4213, 94
https://tests.stockfishchess.org/tests/view/5f6b3fb6c7759d4ee307cff9
closes https://github.com/official-stockfish/Stockfish/pull/3146
Bench: 3865413
2020-09-25 17:44:19 +02:00
SFisGOD and Joost VandeVondele
0405f35403
Double probability of using classical eval
...
This patch doubles the moderate imbalance threshold and probability of using classical eval.
So now if imbalance is greater than PawnValueMg / 4 then there is a 1/8 chance of using classical eval.
STC:
LLR: 2.93 (-2.94,2.94) {-0.25,1.25}
Total: 10984 W: 1303 L: 1140 D: 8541
Ptnml(0-2): 58, 867, 3489, 1010, 68
https://tests.stockfishchess.org/tests/view/5f554c9f97da2d5437d3813e
LTC:
LLR: 2.95 (-2.94,2.94) {0.25,1.25}
Total: 43064 W: 2476 L: 2276 D: 38312
Ptnml(0-2): 37, 1985, 17308, 2145, 57
https://tests.stockfishchess.org/tests/view/5f55690a00a0aa2ca79f0a43
closes https://github.com/official-stockfish/Stockfish/pull/3114
Bench: 4161067
2020-09-08 22:56:08 +02:00
SFisGOD and Joost 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
SFisGOD and Joost VandeVondele
2deb08a529
Reintroduce last captures extension
...
STC:
LLR: 2.93 (-2.94,2.94) {-0.50,1.50}
Total: 34840 W: 3834 L: 3682 D: 27324
Ptnml(0-2): 153, 2767, 11455, 2865, 180
https://tests.stockfishchess.org/tests/view/5f3bb380b38d442594aabefc
LTC:
LLR: 2.95 (-2.94,2.94) {0.25,1.75}
Total: 15832 W: 890 L: 776 D: 14166
Ptnml(0-2): 17, 669, 6429, 785, 16
https://tests.stockfishchess.org/tests/view/5f3c46a0a95672ddd56c632a
closes https://github.com/official-stockfish/Stockfish/pull/3028
see also https://github.com/official-stockfish/Stockfish/pull/3020
Bench: 4348811
2020-08-20 21:12:37 +02:00
SFisGOD and Joost VandeVondele
ee06046412
Tweak castling extension
...
Change condition from three friendly pieces to two. This now means that we only extend castling on the king side if there are no other friendly pieces aside from king and rook. For the queen side, we only extend if there is only a rook and another friendly piece or if there is only a single rook and no other friendly piece but this is very rare.
STC:
LLR: 3.20 (-2.94,2.94) {-0.50,1.50}
Total: 31144 W: 4086 L: 3903 D: 23155
Ptnml(0-2): 227, 2843, 9278, 2968, 256
https://tests.stockfishchess.org/tests/view/5f31487f9081672066537516
LTC:
LLR: 2.93 (-2.94,2.94) {0.25,1.75}
Total: 57816 W: 3786 L: 3538 D: 50492
Ptnml(0-2): 92, 2991, 22488, 3251, 86
https://tests.stockfishchess.org/tests/view/5f3167c3908167206653753d
closes https://github.com/official-stockfish/Stockfish/pull/2980
Bench: 4244812
2020-08-11 13:46:02 +02:00
SFisGOD and Joost VandeVondele
ad2ad4c657
Modify castling extension
...
Extend castling only if there are few friendly pieces on the castling side.
Inspired by silversolver1's (Rahul Dsilva) test
https://tests.stockfishchess.org/tests/view/5f0fef560640035f9d2978cf
STC:
LLR: 2.94 (-2.94,2.94) {-0.50,1.50}
Total: 7096 W: 947 L: 818 D: 5331
Ptnml(0-2): 32, 604, 2181, 665, 66
https://tests.stockfishchess.org/tests/view/5f309f729081672066537426
LTC:
LLR: 2.96 (-2.94,2.94) {0.25,1.75}
Total: 4712 W: 300 L: 215 D: 4197
Ptnml(0-2): 2, 190, 1895, 259, 10
https://tests.stockfishchess.org/tests/view/5f30a2039081672066537430
closes https://github.com/official-stockfish/Stockfish/pull/2970
Bench: 4094850
2020-08-10 11:14:46 +02:00
SFisGOD and Joost VandeVondele
f4c27cda1a
Reintroduce late irreversible move extension
...
Reintroduce vondele's late irreversible move extension for fortress keeping.
This was removed when we only had classical eval.
Now that we have the NNUE net, it seems that this is useful again.
STC:
LLR: 2.93 (-2.94,2.94) {-0.50,1.50}
Total: 5352 W: 787 L: 653 D: 3912
Ptnml(0-2): 34, 451, 1579, 571, 41
https://tests.stockfishchess.org/tests/view/5f2dc8ad61e3b6af64881ff0
LTC:
LLR: 2.94 (-2.94,2.94) {0.25,1.75}
Total: 14416 W: 1013 L: 891 D: 12512
Ptnml(0-2): 15, 722, 5623, 822, 26
https://tests.stockfishchess.org/tests/view/5f2e0e3661e3b6af6488201e
closes https://github.com/official-stockfish/Stockfish/pull/2936
Bench: 4154696
2020-08-08 08:33:24 +02:00
SFisGOD and Joost VandeVondele
1f3bd968bb
Introduce bad outpost penalty
...
In some French games, Stockfish likes to bring the Knight to a bad outpost spot. This is evident in TCEC S18 Superfinal Game 63, where there is a Knight outpost on the queenside but is actually useless. Stockfish is effectively playing a piece down while holding ground against Leela's break on the kingside.
This patch turns the +56 mg bonus for a Knight outpost into a -7 mg penalty if it satisfies the following conditions:
* The outpost square is not on the CenterFiles (i.e. not on files C,D,E and F)
* The knight is not attacking non pawn enemies.
* The side where the outpost is located contains only few enemies, with a particular conditional_more_than_two() implementation
Thank you to apospa...@gmail.com for bringing this to our attention and for providing insights.
See https://groups.google.com/forum/?fromgroups=#!topic/fishcooking/dEXNzSIBgZU
Reference game: https://tcec-chess.com/#div=sf&game=63&season=18
Passed STC:
LLR: 2.93 (-2.94,2.94) {-0.50,1.50}
Total: 6960 W: 1454 L: 1247 D: 4259
Ptnml(0-2): 115, 739, 1610, 856, 160
https://tests.stockfishchess.org/tests/view/5f08221059f6f0353289477e
Passed LTC:
LLR: 2.98 (-2.94,2.94) {0.25,1.75}
Total: 21440 W: 2767 L: 2543 D: 16130
Ptnml(0-2): 122, 1904, 6462, 2092, 140
https://tests.stockfishchess.org/tests/view/5f0838ed59f6f035328947a2
various related tests show strong test results, but so far no generalizations or simplifications of conditional_more_than_two() are found. See PR for details.
closes https://github.com/official-stockfish/Stockfish/pull/2803
Bench: 4366686
2020-07-11 11:23:55 +02:00
SFisGOD and Joost VandeVondele
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
SFisGOD and Stéphane Nicolet
1fdf1f1ff5
Simplify endgame factor for opposite colored bishops
...
Stockfish is continually improving. Patches that gain elo in the past may
no longer be needed as stockfish improved elsewhere. This patch removes
passed pawns count dependence in opposite colored bishops scale factor.
We used the mean of passed count pawns (~1.4) to compensate, and changed
the base value from 16 to 22.
Passed STC:
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 57879 W: 12657 L: 12607 D: 32615
http://tests.stockfishchess.org/tests/view/5dd1644f42928ff08153dc1e
Passed LTC:
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 121648 W: 19622 L: 19659 D: 82367
http://tests.stockfishchess.org/tests/view/5dd24572ccb823d41d4b47bb
Closes https://github.com/official-stockfish/Stockfish/pull/2419
Bench: 5067864
2019-11-24 00:23:06 +01:00
SFisGOD and Stéphane Nicolet
a131975170
Rank-based outposts
...
Introduce OutpostRank[RANK_NB] which contains a bonus according to
the rank of the outpost. We use it for the primary Outpost bonus.
The values are based on the trends of the SPSA tuning run with some
manual tweaks.
Passed STC:
LLR: 2.96 (-2.94,2.94) [-1.50,4.50]
Total: 27454 W: 6059 L: 5869 D: 15526
http://tests.stockfishchess.org/tests/view/5dcadba20ebc590256922f09
Passed LTC:
LLR: 2.94 (-2.94,2.94) [0.00,3.50]
Total: 57950 W: 9443 L: 9112 D: 39395
http://tests.stockfishchess.org/tests/view/5dcaea880ebc5902569230bc
Bench: 4778405
----------------------------
The inspiration for this patch came from Stefan Geschwentner's attempt
of modifying BishopPawns into a rank-based penalty. Michael Stembera
suggested that maybe the S(0, 0) ranks (3rd, 7th and also maybe 8th)
can still be tuned. This would expand our definition of Outpost and
OutpostRanks would be removed altogether. Special thanks to Mark Tenzer
for all the help and excellent suggestions.
2019-11-13 11:01:00 +01:00
SFisGOD and Stéphane Nicolet
3804effb34
Rook PSQT Tuned
...
This patch uses about half the changes of the SPSA tuning run:
http://tests.stockfishchess.org/tests/view/5dba93d30ebc5925b64ed3bf
About a month ago, xoto10's patch raised the mg value of the third rank
center files from -1 to 7 to encourage rook lifts to the third rank. About
three days later, Rocky's patch lowered this value from 7 to 3. This patch
raises that again from 3 to 12 and ends up greater than the original rook
lift patch.
Passed STC:
LLR: 2.95 (-2.94,2.94) [-1.50,4.50]
Total: 104094 W: 22573 L: 22161 D: 59360
http://tests.stockfishchess.org/tests/view/5dbc77f20ebc5925b64ef1d0
Passed LTC:
LLR: 2.96 (-2.94,2.94) [0.00,3.50]
Total: 168291 W: 27410 L: 26777 D: 114104
http://tests.stockfishchess.org/tests/view/5dbd9f1e0ebc5925b64f0647
Bench: 4707799
2019-11-05 00:15:23 +01:00
SFisGOD and Stéphane Nicolet
474d133565
Combo of Parameter Tweaks
...
This patch is a combo of the following tweaks:
Complexity parameters
Knight PSQT
Bishop PSQT
King PSQT
Piece Values
Passed STC:
LLR: 2.95 (-2.94,2.94) [-1.50,4.50]
Total: 56527 W: 12326 L: 12052 D: 32149
http://tests.stockfishchess.org/tests/view/5dbbca3f0ebc5925b64ee6d6
Passed LTC:
LLR: 2.95 (-2.94,2.94) [0.00,3.50]
Total: 64010 W: 10549 L: 10199 D: 43262
http://tests.stockfishchess.org/tests/view/5dbc30dc0ebc5925b64eee0c
Closes https://github.com/official-stockfish/Stockfish/pull/2390
Bench: 4312945
2019-11-02 21:19:35 +01:00
SFisGOD and Stéphane Nicolet
0b0b21c608
Tweak kingFlankAttacks factor in kingDanger
...
Increase kingFlankAttacks factor in kingDanger from 5/16 to 6/16.
Failed STC:
LLR: -2.96 (-2.94,2.94) [0.00,4.00]
Total: 77947 W: 16989 L: 16848 D: 44110
http://tests.stockfishchess.org/tests/view/5d9ac0280ebc5902b6cf63cd
Passed LTC 1:
LLR: 2.96 (-2.94,2.94) [0.00,4.00]
Total: 13443 W: 2231 L: 2037 D: 9175
http://tests.stockfishchess.org/tests/view/5d9ac88d0ebc5902b6cf6ffb
Passed LTC 2:
LLR: 2.96 (-2.94,2.94) [0.00,4.00]
Total: 23340 W: 3842 L: 3617 D: 15881
http://tests.stockfishchess.org/tests/view/5d9acf7f0ebc5902b6cf7c27
Closes https://github.com/official-stockfish/Stockfish/pull/2349
Bench: 4042155
2019-10-07 11:14:33 +02:00
SFisGOD and Marco Costalba
58bbbd176b
Pawn value tweak
...
STC:
LLR: 2.96 (-2.94,2.94) [0.00,4.00]
Total: 47166 W: 10664 L: 10311 D: 26191
http://tests.stockfishchess.org/tests/view/5c7dfc370ebc5925cffdf830
LTC:
LLR: 2.95 (-2.94,2.94) [0.00,4.00]
Total: 35439 W: 6034 L: 5767 D: 23638
http://tests.stockfishchess.org/tests/view/5c7e41020ebc5925cffdfe9b
Bench: 3470519
2019-03-05 14:54:25 +01:00
SFisGOD and Stéphane Nicolet
31ac538f96
A combo of parameter tweaks
...
Joint work by SFisGOD, xoroshiro and Chess13234.
This combo consists of the following tweaks:
Assorted bonuses and penalties by SFisGOD
Bishop and Rook PSQT by SFisGOD
Tempo Value by xoroshiro
Futility pruning by Chess13234
STC:
LLR: 2.95 (-2.94,2.94) [0.00,4.00]
Total: 9005 W: 2082 L: 1882 D: 5041
http://tests.stockfishchess.org/tests/view/5c11628c0ebc5902ba119e90
LTC:
LLR: 2.95 (-2.94,2.94) [0.00,4.00]
Total: 44207 W: 7451 L: 7157 D: 29599
http://tests.stockfishchess.org/tests/view/5c1172a40ebc5902ba119fa3
Bench: 3332460
2018-12-13 13:35:35 +01:00
SFisGOD and Stéphane Nicolet
3f2ec5b3d5
Tweak Queen PSQT based on tuned values
...
STC: (Yellow)
LLR: -2.96 (-2.94,2.94) [0.00,4.00]
Total: 63140 W: 13433 L: 13353 D: 36354
http://tests.stockfishchess.org/tests/view/5bed42c90ebc595e0ae37cf5
LTC: (Green)
LLR: 2.95 (-2.94,2.94) [0.00,4.00]
Total: 47714 W: 7785 L: 7485 D: 32444
http://tests.stockfishchess.org/tests/view/5bec3b8c0ebc595e0ae36dec
Closes https://github.com/official-stockfish/Stockfish/pull/1816
Bench: 3717396
2018-11-19 10:50:55 +01:00
SFisGOD and Stéphane Nicolet
8a9c298dee
Rook PSQT Tuned
...
Failed STC (Yellow )
LLR: -2.96 (-2.94,2.94) [0.00,4.00]
Total: 56302 W: 12007 L: 11953 D: 32342
http://tests.stockfishchess.org/tests/view/5be69d210ebc595e0ae3185b
Passed 1st LTC (Green)
LLR: 2.95 (-2.94,2.94) [0.00,4.00]
Total: 8745 W: 1480 L: 1301 D: 5964
http://tests.stockfishchess.org/tests/view/5be682960ebc595e0ae31818
Failed 2nd LTC (Red)
LLR: -2.96 (-2.94,2.94) [0.00,4.00]
Total: 19398 W: 3040 L: 3133 D: 13225
http://tests.stockfishchess.org/tests/view/5be69b840ebc595e0ae31856
Passed 3rd LTC (Green)
LLR: 2.96 (-2.94,2.94) [0.00,4.00]
Total: 107516 W: 17342 L: 16858 D: 73316
http://tests.stockfishchess.org/tests/view/5bea879a0ebc595e0ae34d80
Closes https://github.com/official-stockfish/Stockfish/pull/1809
How to continue from there?
The values in the rook table now look a bit strange for a human eye
and are hard to explain, maybe it would be nice to simplify them
by hand and see if we can pass another (clean) double green with a
more regular array.
Bench: 3188070
2018-11-19 10:02:31 +01:00
SFisGOD and Stephane Nicolet
cd732c080b
Pawn and Piece Values Tuned at LTC
...
Failed STC
LLR: -2.96 (-2.94,2.94) [0.00,4.00]
Total: 27487 W: 5846 L: 5903 D: 15738
http://tests.stockfishchess.org/tests/view/5be1d3190ebc595e0ae2e5b8
Passed 1st LTC
LLR: 2.95 (-2.94,2.94) [0.00,4.00]
Total: 38503 W: 6270 L: 5999 D: 26234
http://tests.stockfishchess.org/tests/view/5be1f5ef0ebc595e0ae2e750
Passed 2nd LTC
LLR: 2.95 (-2.94,2.94) [0.00,4.00]
Total: 34016 W: 5584 L: 5326 D: 23106
http://tests.stockfishchess.org/tests/view/5be2a1970ebc595e0ae2f1b4
This pull request lead to an interesting discussion about testing
methodology for Stockfish:
https://github.com/official-stockfish/Stockfish/pull/1804
Bench: 3647775
2018-11-08 16:34:10 +01:00
SFisGOD and Stéphane Nicolet
4a0db9ea3c
Combo
...
Combo of two parameter tweaks and tuned values for Queen and ThreatByKing.
STC
LLR: 2.95 (-2.94,2.94) [0.00,4.00]
Total: 20180 W: 4439 L: 4198 D: 11543
http://tests.stockfishchess.org/tests/view/5bd7b8250ebc595e0ae22e97
LTC
LLR: 2.95 (-2.94,2.94) [0.00,4.00]
Total: 86312 W: 14106 L: 13685 D: 58521
http://tests.stockfishchess.org/tests/view/5bd803560ebc595e0ae23213
This combo consists of the following:
Queen Value (tuned values)
Iter: 72056, A: 5000, alpha 0.602000, gamma 0.101000, clipping old, rounding deterministic
param: QueenValueMg, best: 2528.91, start: 2528.00
param: QueenValueEg, best: 2687.12, start: 2698.00
ThreatByKing (tuned values)
Green STC (50.8k games)
http://tests.stockfishchess.org/tests/view/5bd1d5a00ebc595e0ae1cbec
LTC (I stopped this test at 71.2k games. It's likely yellow.)
http://tests.stockfishchess.org/tests/view/5bd263e70ebc595e0ae1d77e
WeakUnopposedPawn (tweak) by xoto (https://github.com/xoto10 )
Green STC (102.8k games)
http://tests.stockfishchess.org/tests/view/5bd306bb0ebc595e0ae1e146
Yellow LTC (90.8k games)
http://tests.stockfishchess.org/tests/view/5bd3ea660ebc595e0ae1f16b
aspiTune1 (tweak) by vondele (https://github.com/vondele )
Green STC (125.9k games)
http://tests.stockfishchess.org/tests/view/5bd2ae100ebc595e0ae1dab0
Yellow LTC (107.9k games)
http://tests.stockfishchess.org/tests/view/5bd3eb700ebc595e0ae1f16f
Thank you @31m059 (Mark Tenzer) for helping me! Also, thank you very much
for recognizing my efforts. I genuinely appreciate it.
Bench: 3556672
2018-11-01 15:39:19 +01:00
