| 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: Joost VandeVondele
Date: Sun Apr 9 15:19:49 2023 +0200 Timestamp: 1681046389 Fix rootComplexity calculation The calculation of rootComplexity can't call eval when in check. Doing so triggers an assert if compiled in debug mode when the rootpos is evaluated using classical eval. Fixes https://github.com/official-stockfish/Stockfish/issues/4512 Passed STC: https://tests.stockfishchess.org/tests/view/6432697431feee5c6d306876 LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 41096 W: 11017 L: 10815 D: 19264 Elo +1.71 Ptnml(0-2): 113, 4172, 11780, 4366, 117 Running LTC: https://tests.stockfishchess.org/tests/view/6432974d31feee5c6d306fc0 LLR: 1.76 (-2.94,2.94) <-1.75,0.25> Total: 73200 W: 19792 L: 19728 D: 33680 Elo +0.30 Ptnml(0-2): 24, 6659, 23182, 6699, 36 closes https://github.com/official-stockfish/Stockfish/pull/4515 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: FauziAkram
Date: Fri Apr 7 09:56:35 2023 +0200 Timestamp: 1680854195 Depth Tweak and tuning tunes reduction related parameters, and introduces more reduction on found good moves. credit for this patch goes also to candirufish Yoshie2000 dubslow peregrineshahin Vizvezdenec Passed STC: LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 38424 W: 10346 L: 10040 D: 18038 Elo +2.77 Ptnml(0-2): 103, 4111, 10473, 4427, 98 https://tests.stockfishchess.org/tests/view/642ca74277ff3301150db511 Passed LTC: LLR: 2.97 (-2.94,2.94) <0.50,2.50> Total: 136968 W: 37151 L: 36660 D: 63157 Elo +1.25 Ptnml(0-2): 43, 13052, 41808, 13533, 48 https://tests.stockfishchess.org/tests/view/642d632377ff3301150dddbe closes https://github.com/official-stockfish/Stockfish/pull/4499 bench: 3672914 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: Wed Apr 5 08:23:54 2023 +0200 Timestamp: 1680675834 Assign negative stat bonuses for quiet moves at Pv nodes This patch assigns negative stat bonuses for quiet moves at pv nodes which are searched at depth greater than this node assumes, so are extended. Passed STC: https://tests.stockfishchess.org/tests/view/6426198bdb43ab2ba6f9cfa2 LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 548944 W: 147287 L: 146254 D: 255403 Elo +0.65 Ptnml(0-2): 1662, 59772, 150671, 60605, 1762 Passed LTC: https://tests.stockfishchess.org/tests/view/642be4f177ff3301150d892d LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 93352 W: 25400 L: 24994 D: 42958 Elo +1.51 Ptnml(0-2): 44, 8817, 28547, 9225, 43 closes https://github.com/official-stockfish/Stockfish/pull/4495 bench 5044536 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: Wed Apr 5 08:18:53 2023 +0200 Timestamp: 1680675533 Simplify away piece count condition for useClassical Simplify away the piece count condition for useClassical. In compensation, the psq requirement is increased by 15%. Also updated the Elo estimate for useClassical, based on recent testing. Simplification STC: https://tests.stockfishchess.org/tests/view/642acbb577ff3301150d3ef5 LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 51984 W: 13906 L: 13707 D: 24371 Elo +1.33 Ptnml(0-2): 150, 5638, 14227, 5817, 160 Simplification LTC: https://tests.stockfishchess.org/tests/view/642b9c5777ff3301150d778a LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 119696 W: 32412 L: 32300 D: 54984 Elo +0.33 Ptnml(0-2): 53, 11529, 36567, 11651, 48 closes https://github.com/official-stockfish/Stockfish/pull/4494 Bench: 5089321 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: Wed Apr 5 08:15:34 2023 +0200 Timestamp: 1680675334 Parameters Tweak Passed STC LLR: 3.22 (-2.94,2.94) <0.00,2.00> Total: 664048 W: 177526 L: 176301 D: 310221 Elo +0.64 Ptnml(0-2): 2002, 72968, 180891, 74129, 2034 https://tests.stockfishchess.org/tests/view/64219901db43ab2ba6f901fa Passed LTC: LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 77576 W: 21125 L: 20750 D: 35701 Elo +1.68 Ptnml(0-2): 24, 7350, 23669, 7717, 28 https://tests.stockfishchess.org/tests/view/642abe3377ff3301150d3a16 closes https://github.com/official-stockfish/Stockfish/pull/4493 bench: 4522076 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: Wed Apr 5 08:13:34 2023 +0200 Timestamp: 1680675214 Simplifiy TM's root complexity Also requires moving optimism initialization, this is a very early `evaluate()` call. STC: https://tests.stockfishchess.org/tests/view/6428c39677ff3301150ca0d7 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 51256 W: 13805 L: 13612 D: 23839 Elo +1.31 Ptnml(0-2): 145, 5283, 14592, 5450, 158 LTC: https://tests.stockfishchess.org/tests/view/64296ff377ff3301150cc519 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 106968 W: 28951 L: 28830 D: 49187 Elo +0.39 Ptnml(0-2): 47, 9746, 33789, 9843, 59 closes https://github.com/official-stockfish/Stockfish/pull/4492 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: Miguel Lahoz
Date: Wed Apr 5 08:10:34 2023 +0200 Timestamp: 1680675034 Remove unneeded bitboard from MP Recent simplification has removed the need for an extra bitboard in MP struct. Use a local variable instead. STC: Passed Non-regression test https://tests.stockfishchess.org/tests/view/64294ae677ff3301150cba16 LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 64872 W: 17383 L: 17203 D: 30286 Elo +0.96 Ptnml(0-2): 179, 6675, 18546, 6859, 177 closes https://github.com/official-stockfish/Stockfish/pull/4490 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: FauziAkram
Date: Sat Apr 1 16:28:52 2023 +0200 Timestamp: 1680359332 Decrease Depth more for positions not in TT. If the position is not in TT, decrease depth by 2 or by 4 if the TT entry for the current position was hit and the stored depth is greater than or equal to the current depth. Many thanks to Vizvezdenec as the main idea was his. Passed STC: LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 70664 W: 18995 L: 18639 D: 33030 Elo +1.75 Ptnml(0-2): 228, 7712, 19090, 8080, 222 https://tests.stockfishchess.org/tests/view/64258a8bdb43ab2ba6f9b682 Passed LTC: LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 85040 W: 23227 L: 22836 D: 38977 Elo +1.60 Ptnml(0-2): 26, 8115, 25867, 8466, 46 https://tests.stockfishchess.org/tests/view/64262057db43ab2ba6f9d0e7 closes https://github.com/official-stockfish/Stockfish/pull/4482 bench: 4380438 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: Maxim Masiutin
Date: Sat Apr 1 16:16:48 2023 +0200 Timestamp: 1680358608 Replace deprecated icc with icx Replace the deprecated Intel compiler icc with its newer icx variant. This newer compiler is based on clang, and yields good performance. As before, currently only linux is supported. closes https://github.com/official-stockfish/Stockfish/pull/4478 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: MinetaS
Date: Sat Apr 1 16:14:30 2023 +0200 Timestamp: 1680358470 Simplify away complexityAverage Instead of tracking the average of complexity values, calculate complexity of root position at the beginning of the search and use it as a scaling factor in time management. Passed non-regression STC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 58752 W: 15738 L: 15551 D: 27463 Elo +1.11 Ptnml(0-2): 164, 6194, 16478, 6371, 169 https://tests.stockfishchess.org/tests/view/6423010edb43ab2ba6f9424a Passed non-regression LTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 92872 W: 24865 L: 24729 D: 43278 Elo +0.51 Ptnml(0-2): 38, 8652, 28929, 8770, 47 https://tests.stockfishchess.org/tests/view/6423c1f0db43ab2ba6f9644f closes https://github.com/official-stockfish/Stockfish/pull/4472 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: Joost VandeVondele
Date: Sat Apr 1 15:58:05 2023 +0200 Timestamp: 1680357485 Stringify the git info passed avoid escaping the string in the Makefile. Alternative to https://github.com/official-stockfish/Stockfish/pull/4476 closes https://github.com/official-stockfish/Stockfish/pull/4481 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: Muzhen Gaming
Date: Sat Apr 1 15:53:46 2023 +0200 Timestamp: 1680357226 Remove reduction for moving threatened piece Simplify away "Decrease reduction if we move a threatened piece". Running a dbg_hit_on() shows that this line is only called ~0.12% of the time. Simplification STC: https://tests.stockfishchess.org/tests/view/641ec2dcdb43ab2ba6f88103 LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 146128 W: 39168 L: 39070 D: 67890 Elo +0.23 Ptnml(0-2): 466, 16117, 39830, 16155, 496 Simplification LTC: https://tests.stockfishchess.org/tests/view/64200689db43ab2ba6f8bca8 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 248016 W: 66703 L: 66714 D: 114599 Elo -0.02 Ptnml(0-2): 105, 24202, 75406, 24189, 106 closes https://github.com/official-stockfish/Stockfish/pull/4471 Bench: 4961236 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: Maxim Masiutin
Date: Sat Apr 1 15:48:47 2023 +0200 Timestamp: 1680356927 Made advanced Windows API calls dynamically linked Made advanced Windows API calls (those from Advapi32.dll) dynamically linked to avoid link errors when compiling using Intel icx compiler for Windows. https://github.com/official-stockfish/Stockfish/pull/4467 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: Maxim Masiutin
Date: Sat Apr 1 15:36:08 2023 +0200 Timestamp: 1680356168 Improve compatibility this makes it easier to compile under MSVC, even though we recommend gcc/clang for production compiles at the moment. In Win32 API, by default, most null-terminated character strings arguments are of wchar_t (UTF16, formerly UCS16-LE) type, i.e. 2 bytes (at least) per character. So, src/misc.cpp should have proper type. Respectively, for src/syzygy/tbprobe.cpp, in Widows, file paths should be std::wstring rather than std::string. However, this requires a very big number of changes, since the config files are also keeping the 8-bit-per-character std::string strings. Therefore, just one change of using 8-byte-per-character CreateFileA make it compile under MSVC. closes https://github.com/official-stockfish/Stockfish/pull/4438 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: peregrineshahin
Date: Wed Mar 29 21:46:23 2023 +0200 Timestamp: 1680119183 Allow PvNode in futility pruning for captures. Passed non-regression STC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 148128 W: 39428 L: 39333 D: 69367 Elo +0.22 Ptnml(0-2): 492, 16326, 40315, 16457, 474 https://tests.stockfishchess.org/tests/view/641c2dbfdb43ab2ba6f804e8 Passed non-regression LTC: LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 376256 W: 100906 L: 101039 D: 174311 Elo -0.12 Ptnml(0-2): 186, 36697, 114494, 36566, 185 https://tests.stockfishchess.org/tests/view/641d33b2db43ab2ba6f83338 closes https://github.com/official-stockfish/Stockfish/pull/4470 bench: 4935616 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: Miguel Lahoz
Date: Wed Mar 29 21:43:07 2023 +0200 Timestamp: 1680118987 Clean up repetitive declarations for see_ge The occupied bitboard is only used in one place and is otherwise thrown away. To simplify use, see_ge function can instead be overloaded. Repetitive declarations for occupied bitboard can be removed. Passed non-regression test https://tests.stockfishchess.org/tests/view/6421c286db43ab2ba6f908eb LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 48912 W: 13196 L: 13001 D: 22715 Elo +1.39 Ptnml(0-2): 146, 5003, 13967, 5190, 150 closes https://github.com/official-stockfish/Stockfish/pull/4469 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: Wed Mar 29 21:37:52 2023 +0200 Timestamp: 1680118672 Update default net to nn-dabb1ed23026.nnue Created by retraining the master net with these modifications: * New filtering methods for existing data from T80 sep+oct2022, T79 apr2022, T78 jun+jul+aug+sep2022, T77 dec2021 * Adding new filtered data from T80 aug2022 and T78 apr+may2022 * Increasing early-fen-skipping from 28 to 30 ``` python3 easy_train.py \ --experiment-name leela96-dfrc99-T80novT79mayT60novdec-v2-T80augsepoctT79aprT78aprtosep-v6-T77dec-v3-sk30 \ --training-dataset /data/leela96-dfrc99-T80novT79mayT60novdec-v2-T80augsepoctT79aprT78aprtosep-v6-T77dec-v3.binpack \ --nnue-pytorch-branch linrock/nnue-pytorch/misc-fixes \ --start-from-engine-test-net True \ --early-fen-skipping 30 \ --max_epoch 900 \ --start-lambda 1.0 \ --end-lambda 0.7 \ --lr 4.375e-4 \ --gamma 0.995 \ --tui False \ --gpus "0," \ --seed $RANDOM ``` The v3 filtering used for data from T77dec 2021 differs from v2 filtering in that: * To improve binpack compression, positions after ply 28 were skipped during training by setting position scores to VALUE_NONE (32002) instead of removing them entirely * All early-game positions with ply <= 28 were removed to maximize binpack compression * Only bestmove captures at d6pv2 search were skipped, not 2nd bestmove captures * Binpack compression was repaired for the remaining positions by effectively replacing bestmoves with "played moves" to maintain contiguous sequences of positions in the training game data After improving binpack compression, The T77 dec2021 data size was reduced from 95G to 19G. The v6 filtering used for data from T80augsepoctT79aprT78aprtosep 2022 differs from v2 in that: * All positions with only one legal move were removed * Tighter score differences at d6pv2 search were used to remove more positions with only one good move than before * d6pv2 search was not used to remove positions where the best 2 moves were captures ``` python3 interleave_binpacks.py \ nn-547-dataset/leela96-eval-filt-v2.binpack \ nn-547-dataset/dfrc99-eval-filt-v2.binpack \ nn-547-dataset/test80-nov2022-12tb7p-eval-filt-v2-d6.binpack \ nn-547-dataset/T79-may2022-12tb7p-eval-filt-v2.binpack \ nn-547-dataset/T60-nov2021-12tb7p-eval-filt-v2.binpack \ nn-547-dataset/T60-dec2021-12tb7p-eval-filt-v2.binpack \ filt-v6/test80-aug2022-16tb7p-filter-v6.binpack \ filt-v6/test80-sep2022-16tb7p-filter-v6.binpack \ filt-v6/test80-oct2022-16tb7p-filter-v6.binpack \ filt-v6/test79-apr2022-16tb7p-filter-v6.binpack \ filt-v6/test78-aprmay2022-16tb7p-filter-v6.binpack \ filt-v6/test78-junjulaug2022-16tb7p-filter-v6.binpack \ filt-v6/test78-sep2022-16tb7p-filter-v6.binpack \ filt-v3/test77-dec2021-16tb7p-filt-v3.binpack \ /data/leela96-dfrc99-T80novT79mayT60novdec-v2-T80augsepoctT79aprT78aprtosep-v6-T77dec-v3.binpack ``` The code for the new data filtering methods is available at: https://github.com/linrock/Stockfish/tree/nnue-data-v3/nnue-data The code for giving hexword names to .nnue files is at: https://github.com/linrock/nnue-namer Links for downloading the training data components can be found at: https://robotmoon.com/nnue-training-data/ Local elo at 25k nodes per move: nn-epoch779.nnue : 0.6 +/- 3.1 Passed STC: https://tests.stockfishchess.org/tests/view/64212412db43ab2ba6f8efb0 LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 82256 W: 22185 L: 21809 D: 38262 Elo +1.59 Ptnml(0-2): 286, 9065, 22067, 9407, 303 Passed LTC: https://tests.stockfishchess.org/tests/view/64223726db43ab2ba6f91d6c LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 30840 W: 8437 L: 8149 D: 14254 Elo +3.24 Ptnml(0-2): 14, 2891, 9323, 3177, 15 closes https://github.com/official-stockfish/Stockfish/pull/4465 bench 5101970 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: Sebastian Buchwald
Date: Wed Mar 29 21:36:27 2023 +0200 Timestamp: 1680118587 Reuse existing functions to read/write array of network parameters closes https://github.com/official-stockfish/Stockfish/pull/4463 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: MinetaS
Date: Sat Mar 25 09:25:49 2023 +0100 Timestamp: 1679732749 Remove non_pawn_material in NNUE::evaluate After "Use NNUE complexity in search, retune related parameters" commit, the effect of non-pawn material adjustment has been nearly diminished. This patch removes pos.non_pawn_material as a simplification, which passed non-regression tests with both STC and LTC. Passed non-regression STC: LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 75152 W: 20030 L: 19856 D: 35266 Elo +0.80 Ptnml(0-2): 215, 8281, 20459, 8357, 264 https://tests.stockfishchess.org/tests/view/641ab471db43ab2ba6f7bc58 Passed non-regression LTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 193864 W: 51870 L: 51829 D: 90165 Elo +0.07 Ptnml(0-2): 86, 18968, 58794, 18987, 97 https://tests.stockfishchess.org/tests/view/641b4fe6db43ab2ba6f7db96 closes https://github.com/official-stockfish/Stockfish/pull/4461 Bench: 5020718 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: Sat Mar 25 09:22:25 2023 +0100 Timestamp: 1679732545 Simplify statScore initialization This patch simplifies initialization of statScore to "always set it up to 0" instead of setting it up to 0 two plies deeper. Reason for why it was done in previous way partially was because of LMR usage of previous statScore which was simplified long time ago so it makes sense to make in more simple there. Passed STC: https://tests.stockfishchess.org/tests/view/641a86d1db43ab2ba6f7b31d LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 115648 W: 30895 L: 30764 D: 53989 Elo +0.39 Ptnml(0-2): 368, 12741, 31473, 12876, 366 Passed LTC: https://tests.stockfishchess.org/tests/view/641b1c31db43ab2ba6f7d17a LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 175576 W: 47122 L: 47062 D: 81392 Elo +0.12 Ptnml(0-2): 91, 17077, 53390, 17141, 89 closes https://github.com/official-stockfish/Stockfish/pull/4460 bench 5081969 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: Sat Mar 25 09:20:58 2023 +0100 Timestamp: 1679732458 Update Elo estimates for terms in search Setting the Elo value of some functions which were not set before. All tests run at 10+0.1 (STC), 25000 games (Same as #4294). Book used: UHO_XXL_+0.90_+1.19.epd Values are rounded to the nearest non-negative integer. Test links: https://tests.stockfishchess.org/tests/view/6419ab5b65775d3b539f46c6 https://tests.stockfishchess.org/tests/view/6419adb465775d3b539f4730 https://tests.stockfishchess.org/tests/view/6419ae9c65775d3b539f4756 https://tests.stockfishchess.org/tests/view/6419b03f65775d3b539f47a8 https://tests.stockfishchess.org/tests/view/6419b35d65775d3b539f4860 https://tests.stockfishchess.org/tests/view/6419b6b965775d3b539f48e6 https://tests.stockfishchess.org/tests/view/6419cade65775d3b539f4cd5 https://tests.stockfishchess.org/tests/view/6419cbb565775d3b539f4d01 https://tests.stockfishchess.org/tests/view/6419cc6965775d3b539f4d1e closes https://github.com/official-stockfish/Stockfish/pull/4459 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: pb00067
Date: Sat Mar 25 09:17:44 2023 +0100 Timestamp: 1679732264 Verified SEE pruning for capturing and checking moves. Patch analyzes field after SEE exchanges concluded with a recapture by the opponent: if opponent Queen/Rook/King results under attack after the exchanges, we consider the move sharp and don't prune it. Important note: By accident I forgot to adjust 'occupied' when the king takes part in the exchanges. As result of this a move is considered sharp too, when opponent king apparently can evade check by recapturing. Surprisingly this seems contribute to patch's strength. STC: https://tests.stockfishchess.org/tests/view/640b16132644b62c33947397 LLR: 2.96 (-2.94,2.94) <0.00,2.00> Total: 116400 W: 31239 L: 30817 D: 54344 Elo +1.26 Ptnml(0-2): 350, 12742, 31618, 13116, 374 LTC: https://tests.stockfishchess.org/tests/view/640c88092644b62c3394c1c5 LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 177600 W: 47988 L: 47421 D: 82191 Elo +1.11 Ptnml(0-2): 62, 16905, 54317, 17436, 80 closes https://github.com/official-stockfish/Stockfish/pull/4453 bench: 5012145 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: pb00067
Date: Sun Mar 19 11:29:35 2023 +0100 Timestamp: 1679221775 Remove 'si' StateInfo variable/parameter. Since st is a member of position we don't need to pass it separately as parameter. While being there also remove some line in pos_is_ok, where a copy of StateInfo was made by using default copy constructor and then verified it's correctedness by doing a memcmp. There is no point in doing that. Passed non-regression test https://tests.stockfishchess.org/tests/view/64098d562644b62c33942b35 LLR: 3.24 (-2.94,2.94) <-1.75,0.25> Total: 548960 W: 145834 L: 146134 D: 256992 Elo -0.19 Ptnml(0-2): 1617, 57652, 156261, 57314, 1636 closes https://github.com/official-stockfish/Stockfish/pull/4444 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: disservin
Date: Sun Mar 19 11:27:15 2023 +0100 Timestamp: 1679221635 NNUE namespace cleanup This patch moves the nnue namespace in the appropiate header that correspondes with the definition. It also makes navigation a bit easier. closes https://github.com/official-stockfish/Stockfish/pull/4445 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: peregrineshahin
Date: Sun Mar 19 11:25:48 2023 +0100 Timestamp: 1679221548 Fix null move issue Fix altering for stats landing on B1 Square after a null move and fix considering counter-moves on A1 for root node. fixes https://github.com/official-stockfish/Stockfish/issues/4333 by preventing calls to from_sq and to_sq functions over null-moves and none-moves. closes https://github.com/official-stockfish/Stockfish/pull/4448 bench: 4980082 see source |