| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Linmiao Xu
Date: Sun May 26 20:32:30 2024 +0200 Timestamp: 1716748350 Lower smallnet threshold with tuned eval params The smallnet threshold is now below the training data range of the current smallnet (simple eval diff > 1k, nn-baff1edelf90.nnue) when no pawns are on the board. Params found with spsa at 93k / 120k games at 60+06: https://tests.stockfishchess.org/tests/view/664fa166a86388d5e27d7d6b Tuned on top of: https://github.com/official-stockfish/Stockfish/pull/5287 Passed STC: https://tests.stockfishchess.org/tests/view/664fc8b7a86388d5e27d8dac LLR: 2.96 (-2.94,2.94) <0.00,2.00> Total: 64672 W: 16731 L: 16371 D: 31570 Elo +1.93 Ptnml(0-2): 239, 7463, 16517, 7933, 184 Passed LTC: https://tests.stockfishchess.org/tests/view/664fd5f9a86388d5e27d8dfe LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 210648 W: 53489 L: 52813 D: 104346 Elo +1.11 Ptnml(0-2): 102, 23129, 58164, 23849, 80 closes https://github.com/official-stockfish/Stockfish/pull/5288 Bench: 1717838 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Stéphane Nicolet
Date: Sun May 26 20:24:05 2024 +0200 Timestamp: 1716747845 Simplify material weights in evaluation This patch uses the same material weights for the nnue amplification term and the optimism term in evaluate(). STC: LLR: 2.99 (-2.94,2.94) <-1.75,0.25> Total: 83360 W: 21489 L: 21313 D: 40558 Elo +0.73 Ptnml(0-2): 303, 9934, 21056, 10058, 329 https://tests.stockfishchess.org/tests/view/664eee69928b1fb18de500d9 LTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 192648 W: 48675 L: 48630 D: 95343 Elo +0.08 Ptnml(0-2): 82, 21484, 53161, 21501, 96 https://tests.stockfishchess.org/tests/view/664fa17aa86388d5e27d7d6e closes https://github.com/official-stockfish/Stockfish/pull/5287 Bench: 1495602 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Muzhen Gaming
Date: Thu May 23 21:37:46 2024 +0200 Timestamp: 1716493066 VVLTC search tune Parameters were tuned in 2 stages: 1. 127k games at VVLTC: https://tests.stockfishchess.org/tests/view/6649f8dfb8fa20e74c39f52a. 2. 106k games at VVLTC: https://tests.stockfishchess.org/tests/view/664bfb77830eb9f886615a9d. Passed VVLTC 1st sprt: https://tests.stockfishchess.org/tests/view/664e8dd9928b1fb18de4e410 LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 20466 W: 5340 L: 5093 D: 10033 Elo +4.19 Ptnml(0-2): 0, 1796, 6397, 2037, 3 Passed VVLTC 2nd sprt: https://tests.stockfishchess.org/tests/view/664eb4aa928b1fb18de4e47d LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 15854 W: 4186 L: 3934 D: 7734 Elo +5.52 Ptnml(0-2): 1, 1367, 4938, 1621, 0 closes https://github.com/official-stockfish/Stockfish/pull/5286 Bench: 1558110 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Linmiao Xu
Date: Thu May 23 21:37:46 2024 +0200 Timestamp: 1716493066 Remove material imbalance param when adjusting optimism Passed non-regression STC: https://tests.stockfishchess.org/tests/view/664d033d830eb9f886616aff LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 102144 W: 26283 L: 26135 D: 49726 Elo +0.50 Ptnml(0-2): 292, 12201, 25991, 12243, 345 Passed non-regression LTC: https://tests.stockfishchess.org/tests/view/664d5c00830eb9f886616cb3 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 250032 W: 63022 L: 63036 D: 123974 Elo -0.02 Ptnml(0-2): 103, 27941, 68970, 27871, 131 closes https://github.com/official-stockfish/Stockfish/pull/5284 Bench: 1330940 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Muzhen Gaming
Date: Thu May 23 21:37:46 2024 +0200 Timestamp: 1716493066 Revert "Reduce When TTValue is Above Alpha" The patch regressed significantly at longer time controls. In particular, the `depth--` behavior was predicted to scale badly based on data from other variations of the patch. Passed VVLTC 1st sprt: https://tests.stockfishchess.org/tests/view/664d45cf830eb9f886616c7d LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 51292 W: 13242 L: 12954 D: 25096 Elo +1.95 Ptnml(0-2): 5, 4724, 15896, 5020, 1 Passed VVLTC 2nd sprt: https://tests.stockfishchess.org/tests/view/664e641a928b1fb18de4e385 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 41884 W: 10933 L: 10634 D: 20317 Elo +2.48 Ptnml(0-2): 1, 3759, 13125, 4054, 3 closes https://github.com/official-stockfish/Stockfish/pull/5283 Bench: 1503815 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: cj5716
Date: Thu May 23 21:37:46 2024 +0200 Timestamp: 1716493066 Optimise pairwise multiplication This speedup was first inspired by a comment by @AndyGrant on my recent PR "If mullo_epi16 would preserve the signedness, then this could be used to remove 50% of the max operations during the halfkp-pairwise mat-mul relu deal." That got me thinking, because although mullo_epi16 did not preserve the signedness, mulhi_epi16 did, and so we could shift left and then use mulhi_epi16, instead of shifting right after the mullo. However, due to some issues with shifting into the sign bit, the FT weights and biases had to be multiplied by 2 for the optimisation to work. Speedup on "Arch=x86-64-bmi2 COMP=clang", courtesy of @Torom Result of 50 runs base (...es/stockfish) = 962946 +/- 1202 test (...ise-max-less) = 979696 +/- 1084 diff = +16750 +/- 1794 speedup = +0.0174 P(speedup > 0) = 1.0000 CPU: 4 x Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz Hyperthreading: on Also a speedup on "COMP=gcc", courtesy of Torom once again Result of 50 runs base (...tockfish_gcc) = 966033 +/- 1574 test (...max-less_gcc) = 983319 +/- 1513 diff = +17286 +/- 2515 speedup = +0.0179 P(speedup > 0) = 1.0000 CPU: 4 x Intel(R) Core(TM) i7-6700K CPU @ 4.00GHz Hyperthreading: on Passed STC: LLR: 2.96 (-2.94,2.94) <0.00,2.00> Total: 67712 W: 17715 L: 17358 D: 32639 Elo +1.83 Ptnml(0-2): 225, 7472, 18140, 7759, 260 https://tests.stockfishchess.org/tests/view/664c1d75830eb9f886616906 closes https://github.com/official-stockfish/Stockfish/pull/5282 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Shawn Xu
Date: Thu May 23 21:30:33 2024 +0200 Timestamp: 1716492633 Simplify Away History Updates in Multicut Passed Non-regression STC: LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 44896 W: 11600 L: 11388 D: 21908 Elo +1.64 Ptnml(0-2): 140, 5230, 11532, 5370, 176 https://tests.stockfishchess.org/tests/view/664cee31830eb9f886616a80 Passed Non-regression LTC: LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 56832 W: 14421 L: 14234 D: 28177 Elo +1.14 Ptnml(0-2): 37, 6251, 15643, 6458, 27 https://tests.stockfishchess.org/tests/view/664cfd4e830eb9f886616aa6 closes https://github.com/official-stockfish/Stockfish/pull/5281 Bench: 1119412 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Linmiao Xu
Date: Thu May 23 21:30:24 2024 +0200 Timestamp: 1716492624 Comment about re-evaluating positions While the smallNet bool is no longer used as of now, setting it to false upon re-evaluation represents the correct eval state. closes https://github.com/official-stockfish/Stockfish/pull/5279 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Viren6
Date: Thu May 23 21:29:36 2024 +0200 Timestamp: 1716492576 Addition of new scaling comments This patch is intended to prevent patches like 9b90cd8 and the subsequent reversion e3c9ed7 from happening again. Scaling behaviour of the reduction adjustments in the non-linear scaling section have been proven to >8 sigma: STC: https://tests.stockfishchess.org/tests/view/6647b19f6dcff0d1d6b05d52 Elo: 4.28 ± 0.8 (95%) LOS: 100.0% Total: 200000 W: 52555 L: 50094 D: 97351 Elo +4.28 Ptnml(0-2): 573, 22628, 51248, 24867, 684 nElo: 8.35 ± 1.5 (95%) PairsRatio: 1.10 VLTC: https://tests.stockfishchess.org/tests/view/6647b1b06dcff0d1d6b05d54 Elo: -1.48 ± 1.0 (95%) LOS: 0.2% Total: 100000 W: 25009 L: 25436 D: 49555 Elo -1.48 Ptnml(0-2): 11, 10716, 28971, 10293, 9 nElo: -3.23 ± 2.2 (95%) PairsRatio: 0.96 The else if condition is moved to the non scaling section based on: https://tests.stockfishchess.org/tests/view/664567a193ce6da3e93b3232 (It has no proven scaling) General comment improvements and removal of a redundant margin condition have also been included. closes https://github.com/official-stockfish/Stockfish/pull/5266 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Dubslow
Date: Thu May 23 21:29:11 2024 +0200 Timestamp: 1716492551 Improve comments about DEPTH constants Also "fix" movepicker to allow depths between CHECKS and NO_CHECKS, which makes them easier to tweak (not that they get tweaked hardly ever) (This was more beneficial when there was a third stage to DEPTH_QS, but it's still an improvement now) closes https://github.com/official-stockfish/Stockfish/pull/5205 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Linmiao Xu
Date: Tue May 21 22:06:17 2024 +0200 Timestamp: 1716321977 Lower smallnet threshold with updated eval divisors Params found after 30k spsa games at 60+0.6, with initial values from 64k spsa games at 45+0.45 First spsa with 64k / 120k games at 45+0.45: https://tests.stockfishchess.org/tests/view/664a561b5fc7b70b8817c663 https://tests.stockfishchess.org/tests/view/664ae88e830eb9f8866146f9 Second spsa with 30k / 120k games at 60+0.6: https://tests.stockfishchess.org/tests/view/664be227830eb9f886615a36 Values found at 10k games at 60+0.6 also passed STC and LTC: https://tests.stockfishchess.org/tests/view/664bf4bd830eb9f886615a72 https://tests.stockfishchess.org/tests/view/664c0905830eb9f886615abf Passed STC: https://tests.stockfishchess.org/tests/view/664c139e830eb9f886615af2 LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 69408 W: 18216 L: 17842 D: 33350 Elo +1.87 Ptnml(0-2): 257, 8275, 17401, 8379, 392 Passed LTC: https://tests.stockfishchess.org/tests/view/664cdaf7830eb9f886616a24 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 35466 W: 9075 L: 8758 D: 17633 Elo +3.11 Ptnml(0-2): 27, 3783, 9794, 4104, 25 closes https://github.com/official-stockfish/Stockfish/pull/5280 bench 1301287 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: MinetaS
Date: Tue May 21 08:46:12 2024 +0200 Timestamp: 1716273972 Remove cutoffCnt margin adjustment in razoring Passed non-regression STC: LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 65344 W: 16767 L: 16578 D: 31999 Elo +1.00 Ptnml(0-2): 198, 7557, 16987, 7718, 212 https://tests.stockfishchess.org/tests/view/664bd895830eb9f886615a26 Passed non-regression LTC: LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 35214 W: 8999 L: 8791 D: 17424 Elo +2.05 Ptnml(0-2): 16, 3804, 9760, 4010, 17 https://tests.stockfishchess.org/tests/view/664bead5830eb9f886615a52 closes https://github.com/official-stockfish/Stockfish/pull/5278 Bench: 1296223 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: FauziAkram
Date: Tue May 21 08:44:59 2024 +0200 Timestamp: 1716273899 Refine Evaluation Scaling with Piece-Specific Weights Refine Evaluation Scaling with Piece-Specific Weights, instead of the simplified npm method. I took the initial idea from Viren6 , as he worked on it in September of last year. I worked on it, and tuned it, and now it passed both tests. Passed STC: LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 95712 W: 24731 L: 24325 D: 46656 Elo +1.47 Ptnml(0-2): 363, 11152, 24357, 11684, 300 https://tests.stockfishchess.org/tests/view/664b5493830eb9f886614af3 Passed LTC: LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 204480 W: 52167 L: 51501 D: 100812 Elo +1.13 Ptnml(0-2): 114, 22579, 56166, 23289, 92 https://tests.stockfishchess.org/tests/view/664b75dd830eb9f886614b44 closes https://github.com/official-stockfish/Stockfish/pull/5277 Bench: 1384337 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Shawn Xu
Date: Tue May 21 08:40:37 2024 +0200 Timestamp: 1716273637 Reduce When TTValue is Above Alpha Passed STC: LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 53376 W: 13818 L: 13476 D: 26082 Elo +2.23 Ptnml(0-2): 156, 6212, 13626, 6522, 172 https://tests.stockfishchess.org/tests/view/664aa261830eb9f8866145e5 Passed LTC: LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 393444 W: 100096 L: 99042 D: 194306 Elo +0.93 Ptnml(0-2): 191, 43516, 108248, 44582, 185 https://tests.stockfishchess.org/tests/view/664ab54f830eb9f88661463c closes https://github.com/official-stockfish/Stockfish/pull/5276 Bench: 1024562 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Michael Chaly
Date: Tue May 21 08:36:32 2024 +0200 Timestamp: 1716273392 Rescale pawn history updates This patch is somewhat of a continuation of recent pawn history gainers. It makes pawn history updates after search twice smaller. Since on average they make pawn history more negative offset is changed to lower value to remain average value approximately the same. https://tests.stockfishchess.org/tests/view/664b3af9830eb9f886614aab Passed STC: LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 170464 W: 44239 L: 43724 D: 82501 Elo +1.05 Ptnml(0-2): 523, 20278, 43128, 20767, 536 Passed LTC against pending PR : https://tests.stockfishchess.org/tests/view/664b8c58830eb9f886614b64 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 98178 W: 25015 L: 24569 D: 48594 Elo +1.58 Ptnml(0-2): 48, 10769, 27005, 11223, 44 closes https://github.com/official-stockfish/Stockfish/pull/5275 Bench: 1343175 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: FauziAkram
Date: Tue May 21 08:27:16 2024 +0200 Timestamp: 1716272836 Use same shuffling Constant for both nets Passed STC: https://tests.stockfishchess.org/tests/view/664a42b15fc7b70b8817aeef LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 87840 W: 22759 L: 22594 D: 42487 Elo +0.65 Ptnml(0-2): 335, 10351, 22324, 10634, 276 Passed LTC: https://tests.stockfishchess.org/tests/view/664a46995fc7b70b8817af02 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 163122 W: 41443 L: 41367 D: 80312 Elo +0.16 Ptnml(0-2): 105, 18154, 44927, 18310, 65 closes https://github.com/official-stockfish/Stockfish/pull/5273 bench: 1190174 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Michael Chaly
Date: Tue May 21 08:17:20 2024 +0200 Timestamp: 1716272240 Update correction history in case of successful null move pruning Since null move pruning uses the same position it makes some sense to try to update correction history there in case of fail high. Update value is 4 times less than normal update. Passed STC: https://tests.stockfishchess.org/tests/view/664a011cae57c1758ac5b4dd LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 419360 W: 108390 L: 107505 D: 203465 Elo +0.73 Ptnml(0-2): 1416, 49603, 106724, 50554, 1383 Passed LTC: https://tests.stockfishchess.org/tests/view/664a53d95fc7b70b8817c65b LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 193518 W: 49076 L: 48434 D: 96008 Elo +1.15 Ptnml(0-2): 89, 21335, 53263, 21989, 83 closes https://github.com/official-stockfish/Stockfish/pull/5272 bench 1301487 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Linmiao Xu
Date: Tue May 21 08:13:25 2024 +0200 Timestamp: 1716272005 Re-eval only if smallnet output flips from simple eval Recent attempts to change the smallnet nnue re-eval threshold did not show much elo difference: https://tests.stockfishchess.org/tests/view/664a29bb25a9058c4d21d53c https://tests.stockfishchess.org/tests/view/664a299925a9058c4d21d53a Passed non-regression STC: https://tests.stockfishchess.org/tests/view/664a3ea95fc7b70b8817aee2 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 22304 W: 5905 L: 5664 D: 10735 Elo +3.75 Ptnml(0-2): 67, 2602, 5603, 2783, 97 Passed non-regression LTC: https://tests.stockfishchess.org/tests/view/664a43d35fc7b70b8817aef4 LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 37536 W: 9667 L: 9460 D: 18409 Elo +1.92 Ptnml(0-2): 25, 4090, 10321, 4317, 15 closes https://github.com/official-stockfish/Stockfish/pull/5271 bench 1287409 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Stefan Geschwentner
Date: Tue May 21 08:11:17 2024 +0200 Timestamp: 1716271877 Simplify the recently introduced ply-based cmh bonus factor. Replace it with a constant which is an approximation of the limit of the factor. STC: LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 120064 W: 30967 L: 30836 D: 58261 Elo +0.38 Ptnml(0-2): 421, 14238, 30608, 14319, 446 https://tests.stockfishchess.org/tests/view/6649d146b8fa20e74c39f4ad LTC: LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 53856 W: 13719 L: 13530 D: 26607 Elo +1.22 Ptnml(0-2): 31, 5879, 14922, 6062, 34 https://tests.stockfishchess.org/tests/view/664a027fae57c1758ac5b4ee closes https://github.com/official-stockfish/Stockfish/pull/5270 Bench: 1355618 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Michael Chaly
Date: Tue May 21 08:07:22 2024 +0200 Timestamp: 1716271642 Do more aggressive pawn history updates Tweak of recent patch that made pawn history to update for move that caused a fail low - and setting up default value of it to -900. This patch makes it more aggressive - twice bigger updates and default value -1100. Passed STC: https://tests.stockfishchess.org/tests/view/6648c5d4308cceea45533b5d LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 235200 W: 61090 L: 60476 D: 113634 Elo +0.91 Ptnml(0-2): 763, 27952, 59651, 28376, 858 Passed LTC: https://tests.stockfishchess.org/tests/view/664a1008ae57c1758ac5b523 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 20076 W: 5193 L: 4908 D: 9975 Elo +4.93 Ptnml(0-2): 7, 2105, 5534, 2380, 12 closes https://github.com/official-stockfish/Stockfish/pull/5268 Bench: 1590474 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Stefan Geschwentner
Date: Tue May 21 08:04:44 2024 +0200 Timestamp: 1716271484 Tweak continuation history bonus dependent on ply. This patch is based on following tuning https://tests.stockfishchess.org/tests/view/6648b2eb308cceea45533abe by only using the tuned factors for the continuation history. Passed STC: LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 99904 W: 25865 L: 25457 D: 48582 Elo +1.42 Ptnml(0-2): 281, 11705, 25578, 12101, 287 https://tests.stockfishchess.org/tests/view/6648c136308cceea45533af8 Passed LTC: LLR: 2.96 (-2.94,2.94) <0.50,2.50> Total: 36402 W: 9362 L: 9039 D: 18001 Elo +3.08 Ptnml(0-2): 20, 3952, 9951, 4241, 37 https://tests.stockfishchess.org/tests/view/6648ee3cb8fa20e74c39f3fd closes https://github.com/official-stockfish/Stockfish/pull/5267 Bench: 1917762 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: cj5716
Date: Tue May 21 07:58:16 2024 +0200 Timestamp: 1716271096 Simplify ClippedReLU Removes some max calls Some speedup stats, courtesy of @AndyGrant (albeit measured in an alternate implementation) Dev 749240 nps Base 748495 nps Gain 0.100% 289936 games STC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 203040 W: 52213 L: 52179 D: 98648 Elo +0.06 Ptnml(0-2): 480, 20722, 59139, 20642, 537 https://tests.stockfishchess.org/tests/view/664805fe6dcff0d1d6b05f2c closes #5261 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Viren6
Date: Sun May 19 09:37:22 2024 +0200 Timestamp: 1716104242 Revert "Simplify Away Quadruple Extensions" This reverts commit 4edd1a3 The unusual result of (combined) +12.0 +- 3.7 in the 2 VVLTC simplification SPRTs ran was the result of base having only 64MB of hash instead of 512MB (Asymmetric hash). Vizvezdenec was the one to notice this. closes https://github.com/official-stockfish/Stockfish/pull/5265 bench 1404295 Co-Authored-By: Michael Chaly <26898827+> see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Muzhen Gaming
Date: Sat May 18 18:09:45 2024 +0200 Timestamp: 1716048585 VVLTC search tune Tuned with 85k games at VVLTC. VVLTC 1st sprt: https://tests.stockfishchess.org/tests/view/6648b836308cceea45533ad7 LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 14880 W: 3890 L: 3652 D: 7338 Elo +5.56 Ptnml(0-2): 0, 1255, 4694, 1489, 2 VVLTC 2nd sprt: https://tests.stockfishchess.org/tests/view/6648c34f308cceea45533b4f LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 24984 W: 6502 L: 6235 D: 12247 Elo +3.71 Ptnml(0-2): 1, 2178, 7867, 2445, 1 closes https://github.com/official-stockfish/Stockfish/pull/5264 Bench: 1198142 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Linmiao Xu
Date: Sat May 18 18:08:39 2024 +0200 Timestamp: 1716048519 Simplify away adjustEval lambda Now that only the shuffling constant differs between nets, a lambda for adjusting eval is no longer needed. Passed non-regression STC: https://tests.stockfishchess.org/tests/view/664806ca6dcff0d1d6b05f34 LLR: 2.99 (-2.94,2.94) <-1.75,0.25> Total: 31552 W: 8175 L: 7959 D: 15418 Elo +2.38 Ptnml(0-2): 76, 3180, 9065, 3362, 93 closes https://github.com/official-stockfish/Stockfish/pull/5260 No functional change see source |