| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 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: Mon Oct 5 18:56:49 2020 +0200 Timestamp: 1601917009 Schedule threads fairly under valgrind fixes a rare case that can cause CI to fail when running multithreaded under valgrind. closes https://github.com/official-stockfish/Stockfish/pull/3165 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 Windows 32 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: Mon Sep 28 22:42:26 2020 +0200 Timestamp: 1601325746 Include pawns in NNUE scaling We now include the total pawn count in the scaling factor for the output of the NNUE evaluation network. This should have the effect of trying to keep more pawns when SF has the advantage, but exchange them when she is defending. Thanks to Alexander Pagel (Lolligerhans) for the idea of using the value of pawns to ease the comparison with the rest of the material estimation. Passed STC: LLR: 2.93 (-2.94,2.94) {-0.25,1.25} Total: 15072 W: 1700 L: 1539 D: 11833 Elo +3.71 Ptnml(0-2): 65, 1202, 4845, 1355, 69 https://tests.stockfishchess.org/tests/view/5f7235a63b22d6afa50699b3 Passed LTC: LLR: 2.93 (-2.94,2.94) {0.25,1.25} Total: 25880 W: 1270 L: 1124 D: 23486 Elo +1.96 Ptnml(0-2): 23, 980, 10788, 1126, 23 https://tests.stockfishchess.org/tests/view/5f723b483b22d6afa5069a99 closes https://github.com/official-stockfish/Stockfish/pull/3164 Bench: 3776081 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 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: Mon Sep 28 22:34:25 2020 +0200 Timestamp: 1601325265 Tweak reduction formula. Replace log(i) with log(i + 0.25 * log(i)). This increases especially for low values the reductions. But for bigger values there are nearly no changes. STC: LLR: 2.94 (-2.94,2.94) {-0.25,1.25} Total: 49640 W: 5505 L: 5289 D: 38846 Elo +1.51 Ptnml(0-2): 270, 4074, 15924, 4274, 278 https://tests.stockfishchess.org/tests/view/5f71f04d3b22d6afa5069478 LTC: LLR: 2.94 (-2.94,2.94) {0.25,1.25} Total: 43856 W: 2209 L: 2021 D: 39626 Elo +1.49 Ptnml(0-2): 32, 1776, 18128, 1956, 36 https://tests.stockfishchess.org/tests/view/5f7232ee3b22d6afa50699a2 closes https://github.com/official-stockfish/Stockfish/pull/3163 Bench: 3555769 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: SFisGOD
Date: Mon Sep 28 22:29:31 2020 +0200 Timestamp: 1601324971 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 Elo +1.86 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 Elo +1.29 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 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: FauziAkram
Date: Mon Sep 28 22:26:37 2020 +0200 Timestamp: 1601324797 Tweaking Mobility and Safe Check Passed STC: https://tests.stockfishchess.org/tests/view/5f70d86d3b22d6afa50693b9 LLR: 2.94 (-2.94,2.94) {-0.25,1.25} Total: 100368 W: 20323 L: 19914 D: 60131 Elo +1.42 Ptnml(0-2): 1927, 11641, 22605, 12118, 1893 Passed LTC: https://tests.stockfishchess.org/tests/view/5f71bb553b22d6afa5069457 LLR: 2.94 (-2.94,2.94) {0.25,1.25} Total: 77648 W: 10613 L: 10181 D: 56854 Elo +1.93 Ptnml(0-2): 634, 7280, 22594, 7652, 664 closes https://github.com/official-stockfish/Stockfish/pull/3160 Bench: 3861984 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Vizvezdenec
Date: Mon Sep 28 22:22:54 2020 +0200 Timestamp: 1601324574 Adjust null move pruning constants Idea is that division by fraction of 2 is slightly faster than by other numbers so parameters are adjusted in a way that division in null move pruning depth reduction features dividing by 256 instead of dividing by 213. Other than this patch is almost non-functional - difference starts to exist by depth 133. passed STC https://tests.stockfishchess.org/tests/view/5f70dd943b22d6afa50693c5 LLR: 2.95 (-2.94,2.94) {-0.25,1.25} Total: 57048 W: 6616 L: 6392 D: 44040 Elo +1.36 Ptnml(0-2): 304, 4583, 18531, 4797, 309 passed LTC https://tests.stockfishchess.org/tests/view/5f7180db3b22d6afa506941f LLR: 2.95 (-2.94,2.94) {0.25,1.25} Total: 45960 W: 2419 L: 2229 D: 41312 Elo +1.44 Ptnml(0-2): 43, 1779, 19137, 1987, 34 closes https://github.com/official-stockfish/Stockfish/pull/3159 bench 3789924 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 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: Mon Sep 28 16:55:40 2020 +0200 Timestamp: 1601304940 Update default net to nn-04a843f8932e.nnue an optimization of Sergio's nn-03744f8d56d8.nnue tuning the output layer (33 parameters) on game play. WIP code to make layer parameters tunable is https://github.com/vondele/Stockfish/tree/optionOutput Optimization itself is using https://github.com/vondele/nevergrad4sf Writing of the modified net using WIP code based on the learner code https://github.com/vondele/Stockfish/tree/evalWrite Most parameters in the output layer are changed only little (~5 for int8_t). passed STC: https://tests.stockfishchess.org/tests/view/5f716f6b3b22d6afa506941a LLR: 2.94 (-2.94,2.94) {-0.25,1.25} Total: 15488 W: 1859 L: 1689 D: 11940 Elo +3.81 Ptnml(0-2): 79, 1260, 4917, 1388, 100 passed LTC: https://tests.stockfishchess.org/tests/view/5f71908e3b22d6afa506942e LLR: 2.93 (-2.94,2.94) {0.25,1.25} Total: 8728 W: 518 L: 400 D: 7810 Elo +4.70 Ptnml(0-2): 7, 338, 3556, 456, 7 closes https://github.com/official-stockfish/Stockfish/pull/3158 Bench: 3789924 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: noobpwnftw
Date: Mon Sep 28 16:54:35 2020 +0200 Timestamp: 1601304875 Use incremental updates more often Use incremental updates for accumulators for up to 2 plies. Do not copy accumulator. About 2% speedup. Passed STC: LLR: 2.95 (-2.94,2.94) {-0.25,1.25} Total: 21752 W: 2583 L: 2403 D: 16766 Elo +2.88 Ptnml(0-2): 128, 1761, 6923, 1931, 133 https://tests.stockfishchess.org/tests/view/5f7150cf3b22d6afa5069412 closes https://github.com/official-stockfish/Stockfish/pull/3157 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 Windows 32 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 Sep 27 08:24:50 2020 +0200 Timestamp: 1601187890 Tweak nnue scaling to keep more material Current master uses a constant scale factor of 5/4 = 1.25 for the output of the NNUE network, for compatibility with search and classical evaluation. We modify this scale factor to make it dependent on the phase of the game, going from about 1.5 in the opening to 1.0 for pure pawn endgames. This helps Stockfish to avoid exchanges of pieces (heavy pieces in particular) when she has the advantage, keeping more material on the board when attacking. Passed STC: LLR: 2.95 (-2.94,2.94) {-0.25,1.25} Total: 14744 W: 1771 L: 1599 D: 11374 Elo +4.05 Ptnml(0-2): 87, 1184, 4664, 1344, 93 https://tests.stockfishchess.org/tests/view/5f6fb0a63b22d6afa506904f Passed LTC: LLR: 2.95 (-2.94,2.94) {0.25,1.25} Total: 8912 W: 512 L: 393 D: 8007 Elo +4.64 Ptnml(0-2): 7, 344, 3637, 459, 9 https://tests.stockfishchess.org/tests/view/5f6fcf533b22d6afa5069066 closes https://github.com/official-stockfish/Stockfish/pull/3154 Bench: 3943952 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: SFisGOD
Date: Fri Sep 25 17:44:19 2020 +0200 Timestamp: 1601048659 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 Elo +2.69 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 Elo +1.19 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 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 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: Fri Sep 25 17:44:14 2020 +0200 Timestamp: 1601048654 Suppress info strings before 'uci' On Windows, Stockfish wouldn't launch in some GUI because we output some info strings (about the use of large pages) before sending the 'uci' command. It seems more robust to suppress these info strings, and instead to add a proper section section in the Readme about large pages use. fixes https://github.com/official-stockfish/Stockfish/issues/3052 closes https://github.com/official-stockfish/Stockfish/pull/3147 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 Windows 32 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: Tue Sep 22 22:45:02 2020 +0200 Timestamp: 1600807502 Increase reductions with the number of threads Passed STC with 8 threads: LLR: 2.92 (-2.94,2.94) {-0.25,1.25} Total: 13520 W: 1135 L: 1012 D: 11373 Elo +3.16 Ptnml(0-2): 39, 815, 4929, 938, 39 https://tests.stockfishchess.org/tests/view/5f68e274ded68c240be73f41 Passed LTC with 8 threads: LLR: 2.96 (-2.94,2.94) {0.25,1.25} Total: 48384 W: 2183 L: 1994 D: 44207 Elo +1.36 Ptnml(0-2): 28, 1777, 20402, 1948, 37 https://tests.stockfishchess.org/tests/view/5f68f068ded68c240be747e9 closes https://github.com/official-stockfish/Stockfish/pull/3142 No functional change (for one thread) see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 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: Mon Sep 21 10:41:10 2020 +0200 Timestamp: 1600677670 Small cleanups 12 - Clean signature of functions in namespace NNUE - Add comment for countermove based pruning - Remove bestMoveCount variable - Add const qualifier to kpp_board_index array - Fix spaces in get_best_thread() - Fix indention in capture LMR code in search.cpp - Rename TtmemDeleter to LargePageDeleter Closes https://github.com/official-stockfish/Stockfish/pull/3063 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 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Sami Kiminki
Date: Mon Sep 21 08:43:48 2020 +0200 Timestamp: 1600670628 Add large page support for NNUE weights and simplify TT mem management Use TT memory functions to allocate memory for the NNUE weights. This should provide a small speed-up on systems where large pages are not automatically used, including Windows and some Linux distributions. Further, since we now have a wrapper for std::aligned_alloc(), we can simplify the TT memory management a bit: - We no longer need to store separate pointers to the hash table and its underlying memory allocation. - We also get to merge the Linux-specific and default implementations of aligned_ttmem_alloc(). Finally, we'll enable the VirtualAlloc code path with large page support also for Win32. STC: https://tests.stockfishchess.org/tests/view/5f66595823a84a47b9036fba LLR: 2.94 (-2.94,2.94) {-0.25,1.25} Total: 14896 W: 1854 L: 1686 D: 11356 Elo +3.92 Ptnml(0-2): 65, 1224, 4742, 1312, 105 closes https://github.com/official-stockfish/Stockfish/pull/3081 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 Windows 32 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: Mon Sep 21 08:19:10 2020 +0200 Timestamp: 1600669150 Tweak hybrid treshold. Increase the first hybrid threshold with more material. Rewrite the hybrid rules for clarity. STC: LLR: 2.94 (-2.94,2.94) {-0.25,1.25} Total: 24416 W: 3039 L: 2848 D: 18529 Elo +2.72 Ptnml(0-2): 135, 2136, 7503, 2271, 163 https://tests.stockfishchess.org/tests/view/5f6451efbb0cae038ca8f4dc LTC; LLR: 2.95 (-2.94,2.94) {0.25,1.25} Total: 65016 W: 3702 L: 3455 D: 57859 Elo +1.32 Ptnml(0-2): 66, 2991, 26157, 3218, 76 https://tests.stockfishchess.org/tests/view/5f64b143bb0cae038ca8f51f closes https://github.com/official-stockfish/Stockfish/pull/3140 Bench: 3973739 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Unai Corzo
Date: Mon Sep 21 07:47:41 2020 +0200 Timestamp: 1600667261 Simplify reduced depth search Simplification in reduced depth search. STC https://tests.stockfishchess.org/tests/view/5f64c72fbb0cae038ca8f531 LLR: 2.94 (-2.94,2.94) {-1.25,0.25} Total: 28320 W: 3475 L: 3359 D: 21486 Elo +1.42 Ptnml(0-2): 170, 2485, 8773, 2523, 209 LTC https://tests.stockfishchess.org/tests/view/5f650cfabb0cae038ca8f585 LLR: 2.95 (-2.94,2.94) {-0.75,0.25} Total: 58392 W: 3354 L: 3285 D: 51753 Elo +0.41 Ptnml(0-2): 74, 2826, 23336, 2877, 83 closes https://github.com/official-stockfish/Stockfish/pull/3139 bench: 4201295 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: syzygy1
Date: Thu Sep 17 17:24:52 2020 +0200 Timestamp: 1600356292 Use tiling to speed up accumulator refreshes and updates Perform the update and refresh operations tile by tile in a local array of vectors. By selecting the array size carefully, we achieve that the compiler keeps the whole array in vector registers. Idea and original implementation by @sf-x. STC: https://tests.stockfishchess.org/tests/view/5f623eec912c15f19854b855 LLR: 2.94 (-2.94,2.94) {-0.25,1.25} Total: 4872 W: 623 L: 477 D: 3772 Elo +10.41 Ptnml(0-2): 14, 350, 1585, 450, 37 LTC: https://tests.stockfishchess.org/tests/view/5f62434e912c15f19854b860 LLR: 2.94 (-2.94,2.94) {0.25,1.25} Total: 25808 W: 1565 L: 1401 D: 22842 Elo +2.21 Ptnml(0-2): 23, 1186, 10332, 1330, 33 closes https://github.com/official-stockfish/Stockfish/pull/3130 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 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Unai Corzo
Date: Thu Sep 17 07:06:21 2020 +0200 Timestamp: 1600319181 Simplify futility pruning for captures STC https://tests.stockfishchess.org/tests/view/5f61f0e4b91f2ec371e429c2 LLR: 2.94 (-2.94,2.94) {-1.25,0.25} Total: 75512 W: 8747 L: 8704 D: 58061 Elo +0.20 Ptnml(0-2): 440, 6589, 23683, 6576, 468 LTC https://tests.stockfishchess.org/tests/view/5f6215d3912c15f19854b801 LLR: 2.95 (-2.94,2.94) {-0.75,0.25} Total: 92912 W: 5030 L: 4992 D: 82890 Elo +0.14 Ptnml(0-2): 88, 4363, 37532, 4369, 104 closes https://github.com/official-stockfish/Stockfish/pull/3129 bench: 3856086 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Unai Corzo
Date: Thu Sep 17 07:06:21 2020 +0200 Timestamp: 1600319181 Remove castling extension STC https://tests.stockfishchess.org/tests/view/5f5fa5348fbc1c8a3f476eca LLR: 2.94 (-2.94,2.94) {-1.25,0.25} Total: 38520 W: 4713 L: 4610 D: 29197 Elo +0.93 Ptnml(0-2): 233, 3486, 11734, 3559, 248 LTC https://tests.stockfishchess.org/tests/view/5f62166a912c15f19854b806 LLR: 2.93 (-2.94,2.94) {-0.75,0.25} Total: 48024 W: 2673 L: 2600 D: 42751 Elo +0.53 Ptnml(0-2): 64, 2247, 19316, 2322, 63 closes https://github.com/official-stockfish/Stockfish/pull/3128 bench: 3818400 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: GoldenRare
Date: Thu Sep 17 07:06:21 2020 +0200 Timestamp: 1600319181 Added FEN string to bench output fixes https://github.com/official-stockfish/Stockfish/pull/3117 closes https://github.com/official-stockfish/Stockfish/pull/3118 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 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: syzygy1
Date: Wed Sep 16 21:00:14 2020 +0200 Timestamp: 1600282814 Improve NDK section in Makefile This PR sets the "comp" variable simply to "clang", which seems to be more consistent and allows a small simplification. The PR also moves the section that sets "profile_make" and "profile_use" to after the NDK section, which ensures that these variables are now set correctly for NDK/clang. closes https://github.com/official-stockfish/Stockfish/pull/3121 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 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: xoto10
Date: Wed Sep 16 20:56:40 2020 +0200 Timestamp: 1600282600 Use 2 * bestMoveChanges. NNUE appears to provide a more stable eval than the classic eval, so the time use dependencies on bestMoveChanges, fallingEval, etc may need to change to make the best use of available time. This change doubles the effect of totBestMoveChanges when giving more time because the choice of best move is unstable. STC: LLR: 2.94 (-2.94,2.94) {-0.25,1.25} Total: 101928 W: 11995 L: 11698 D: 78235 Elo +1.01 Ptnml(0-2): 592, 8707, 32103, 8936, 626 https://tests.stockfishchess.org/tests/view/5f538a462d02727c56b36cec LTC: LLR: 2.94 (-2.94,2.94) {0.25,1.25} Total: 186392 W: 10383 L: 9877 D: 166132 Elo +0.94 Ptnml(0-2): 207, 8370, 75539, 8870, 210 https://tests.stockfishchess.org/tests/view/5f54a9712d02727c56b36d5a closes https://github.com/official-stockfish/Stockfish/pull/3119 Bench 4222126 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Sergio Vieri
Date: Tue Sep 15 07:21:04 2020 +0200 Timestamp: 1600147264 Update default net to nn-03744f8d56d8.nnue Equivalent to 20200914-1520 closes https://github.com/official-stockfish/Stockfish/pull/3123 Bench: 4222126 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: mckx00
Date: Tue Sep 15 07:19:02 2020 +0200 Timestamp: 1600147142 Simplify StatSCore Initialization No need to initialize StatScore at rootNode. Current Logic is redundant because at subsequent levels the grandchildren statScore is initialized to zero. closes https://github.com/official-stockfish/Stockfish/pull/3122 Non 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 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: SFisGOD
Date: Tue Sep 8 22:56:08 2020 +0200 Timestamp: 1599598568 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 Elo +5.16 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 Elo +1.61 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 see source |