| 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: Thu Jul 24 10:26:15 2025 +0200 Timestamp: 1753345575 Correct comment closes https://github.com/official-stockfish/Stockfish/pull/6159 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Daniel Samek
Date: Thu Jul 24 10:24:08 2025 +0200 Timestamp: 1753345448 Add offsets to history updates. All parameters were tuned on 60k STC games (https://tests.stockfishchess.org/tests/view/6867ef49fe0f2fe354c0c735). Passed STC: LLR: 2.98 (-2.94,2.94) <0.00,2.00> Total: 60576 W: 15794 L: 15444 D: 29338 Elo +2.01 Ptnml(0-2): 141, 7003, 15642, 7369, 133 https://tests.stockfishchess.org/tests/view/686d5af11451bd6fb830772a Passed LTC: LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 58722 W: 15159 L: 14799 D: 28764 Elo +2.13 Ptnml(0-2): 19, 6259, 16455, 6599, 29 https://tests.stockfishchess.org/tests/view/686f9fd51451bd6fb83081c9 closes https://github.com/official-stockfish/Stockfish/pull/6158 bench: 2706299 see source |
| Windows x64 for Haswell CPUs 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: Thu Jul 24 10:19:10 2025 +0200 Timestamp: 1753345150 Remove !ttData.move condition from cutNode reduction Passed STC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 118080 W: 30427 L: 30298 D: 57355 Elo +0.38 Ptnml(0-2): 290, 13880, 30561, 14029, 280 https://tests.stockfishchess.org/tests/view/6853f9bc038630d25f468670 Passed LTC: LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 232272 W: 59187 L: 59182 D: 113903 Elo +0.01 Ptnml(0-2): 111, 25430, 65014, 25505, 76 https://tests.stockfishchess.org/tests/view/68585c40a596a06817bb922e closes https://github.com/official-stockfish/Stockfish/pull/6157 bench: 2227361 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 + SSSE3 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 Jul 24 10:13:24 2025 +0200 Timestamp: 1753344804 Consistent syntax for class members Currently, search.cpp uses three different syntax when accessing class member variables * thisThread object references. This was a remnant from when pos.this_thread() was necessary for thread-local variable access * this object references * implicit member variable access This PR aims to deprecate thisThread and standardize this syntax to implicit variable access, which is consistent with the rest of SF's codebase. closes https://github.com/official-stockfish/Stockfish/pull/6154 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: 87
Date: Thu Jul 24 10:08:35 2025 +0200 Timestamp: 1753344515 Speedup movegen with VBMI2 Passed STC LLR: 2.96 (-2.94,2.94) <0.00,2.00> Total: 166720 W: 43191 L: 42701 D: 80828 Elo +1.02 Ptnml(0-2): 348, 18567, 45069, 18999, 377 https://tests.stockfishchess.org/tests/view/686ae98dfe0f2fe354c0c867 Refactor movegen to emit to a vector with 16-bit elements, which enables a speedup with AVX512-VBMI2 when writing moves to the move list. Very crude timing measurements of perft via timing ./stockfish "go perft 7" demonstrates approximately 17% perft speedup: Summary ./Stockfish-dev/src/stockfish 'go perft 7' ran 1.17 ± 0.04 times faster than ./Stockfish-base/src/stockfish 'go perft 7' Estimated overall nps increase of 0.4% via speedtest: 33605229 -> 33749825 (many thanks JonathanHallstrom). The corresponding arch is avx512icl as it is a good baseline for consumer avx-512 feature set support; Intel Ice Lake was the first consumer AVX-512 CPU and it is a decent subset of what AMD Zen 4 supports. closes https://github.com/official-stockfish/Stockfish/pull/6153 No functional change see source |
| 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: Daniel Monroe
Date: Thu Jul 24 09:59:00 2025 +0200 Timestamp: 1753343940 simplify away TT history term Passed simplification STC LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 163168 W: 42136 L: 42055 D: 78977 Elo +0.17 Ptnml(0-2): 410, 19224, 42212, 19351, 387 https://tests.stockfishchess.org/tests/view/684e16ee703522d4f129c9e9 Passed simplification LTC LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 303144 W: 77580 L: 77647 D: 147917 Elo -0.08 Ptnml(0-2): 150, 33110, 85134, 33013, 165 https://tests.stockfishchess.org/tests/view/6852ff97703522d4f129d5f7 closes https://github.com/official-stockfish/Stockfish/pull/6152 bench: 2294774 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: Daniel Monroe
Date: Thu Jul 24 09:56:36 2025 +0200 Timestamp: 1753343796 Simplify away constants in statscore Passed simplification STC LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 317280 W: 81589 L: 81678 D: 154013 Elo -0.10 Ptnml(0-2): 799, 37651, 81847, 37526, 817 https://tests.stockfishchess.org/tests/view/684e197a703522d4f129c9f0 Passed simplification LTC LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 174816 W: 44656 L: 44593 D: 85567 Elo +0.13 Ptnml(0-2): 83, 19064, 49058, 19113, 90 https://tests.stockfishchess.org/tests/view/6858aa54a596a06817bb924f closes https://github.com/official-stockfish/Stockfish/pull/6150 bench: 2508140 see source |
| 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: Thu Jul 24 09:52:35 2025 +0200 Timestamp: 1753343555 Remove depth condition from ttCapture reduction Passed STC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 25920 W: 6822 L: 6593 D: 12505 Elo +3.07 Ptnml(0-2): 54, 2932, 6783, 3113, 78 https://tests.stockfishchess.org/tests/view/6853f9c2038630d25f468672 Passed LTC: LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 177318 W: 45339 L: 45278 D: 86701 Elo +0.12 Ptnml(0-2): 85, 19333, 49765, 19388, 88 https://tests.stockfishchess.org/tests/view/6854468a038630d25f4686c0 closes https://github.com/official-stockfish/Stockfish/pull/6149 bench: 2437275 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 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: Daniel Monroe
Date: Thu Jul 24 09:49:43 2025 +0200 Timestamp: 1753343383 Simplify PV term in lmr Passed simplification STC LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 204000 W: 52541 L: 52506 D: 98953 Elo +0.06 Ptnml(0-2): 561, 24133, 52589, 24144, 573 https://tests.stockfishchess.org/tests/view/684f24ce703522d4f129cab5 Passed simplification LTC LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 156150 W: 39890 L: 39807 D: 76453 Elo +0.18 Ptnml(0-2): 82, 16882, 44043, 17007, 61 https://tests.stockfishchess.org/tests/view/6855d8bf1d0d9fc6587538f8 closes https://github.com/official-stockfish/Stockfish/pull/6148 bench 2766493 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 Jul 2 18:41:46 2025 +0200 Timestamp: 1751474506 Simplify sudden death time optimization Passed Sudden Death STC: https://tests.stockfishchess.org/tests/view/68455fe5375c2b77d9855351 LLR: 2.91 (-2.94,2.94) <-1.75,0.25> Total: 49248 W: 13008 L: 12798 D: 23442 Elo +1.48 Ptnml(0-2): 309, 5491, 12821, 5687, 316 Passed Sudden Death LTC: https://tests.stockfishchess.org/tests/view/6845a392375c2b77d98553cf LLR: 3.01 (-2.94,2.94) <-1.75,0.25> Total: 551070 W: 141699 L: 142031 D: 267340 Elo -0.21 Ptnml(0-2): 1923, 60608, 150916, 60054, 2034 Passed Standard STC: https://tests.stockfishchess.org/tests/view/683c5ebb6ec7634154f9d989 LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 142624 W: 36808 L: 36709 D: 69107 Elo +0.24 Ptnml(0-2): 302, 15448, 39745, 15483, 334 Passed Standard LTC: https://tests.stockfishchess.org/tests/view/683f1a4f6ec7634154f9dc5a LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 146922 W: 37381 L: 37296 D: 72245 Elo +0.20 Ptnml(0-2): 69, 13552, 46117, 13671, 52 closes https://github.com/official-stockfish/Stockfish/pull/6132 Bench: 2249459 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 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 Jul 2 18:41:46 2025 +0200 Timestamp: 1751474506 Remove eval & beta diff from NM reduction Passed STC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 43456 W: 11178 L: 10966 D: 21312 Elo +1.69 Ptnml(0-2): 114, 5078, 11114, 5326, 96 https://tests.stockfishchess.org/tests/view/6849ae13e84567164b5c9de9 Passed LTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 63090 W: 16302 L: 16125 D: 30663 Elo +0.97 Ptnml(0-2): 37, 6837, 17603, 7048, 20 https://tests.stockfishchess.org/tests/view/684ab516e84567164b5ca02f closes https://github.com/official-stockfish/Stockfish/pull/6134 Bench: 2249459 see source |
| 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: mstembera
Date: Wed Jul 2 18:41:45 2025 +0200 Timestamp: 1751474505 Optimize find_nnz() using AVX512 About a 1% speedup for ARCH x86-64-avx512 and x86-64-vnni512. Note: This could be optimized further if we wanted to add an ARCH supporting VBMI2 which is even more modern than VNNI. https://en.wikichip.org/wiki/x86/avx512_vbmi2 closes https://github.com/official-stockfish/Stockfish/pull/6139 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: Wed Jul 2 18:32:12 2025 +0200 Timestamp: 1751473932 Fix trivial errors in Makefile 1. Remove "default" rule as "default" has no special meaning as a rule name. Make runs the very first rule whose name doesn't begin with a dot (which is "help" currently). 2. Make "format" rule not update dependencies. closes https://github.com/official-stockfish/Stockfish/pull/6140 No functional change see source |
| Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Robert Nurnberg @ elitebook
Date: Wed Jul 2 18:32:02 2025 +0200 Timestamp: 1751473922 Introduce a constant for ValueList size in search() Having the size of these lists in two separate places likely contributed to the crashes seen during the recent tuning attempt https://tests.stockfishchess.org/tests/view/685c413343ce022d15794536. Thanks to @MinetaS for spotting this. closes https://github.com/official-stockfish/Stockfish/pull/6142 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: Daniel Monroe
Date: Wed Jul 2 18:31:04 2025 +0200 Timestamp: 1751473864 Simplify quiet move streak logic Passed non-regression STC LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 148960 W: 38409 L: 38312 D: 72239 Elo +0.23 Ptnml(0-2): 372, 17664, 38318, 17747, 379 https://tests.stockfishchess.org/tests/view/684c5773703522d4f129c5f7 Passed non-regression LTC LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 180720 W: 46188 L: 46130 D: 88402 Elo +0.11 Ptnml(0-2): 84, 19608, 50929, 19644, 95 https://tests.stockfishchess.org/tests/view/68505fa5703522d4f129cbab closes https://github.com/official-stockfish/Stockfish/pull/6143 Bench: 2055894 see source |
| Windows x64 for Haswell CPUs 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: Wed Jul 2 18:31:04 2025 +0200 Timestamp: 1751473864 Remove non-functional low-ply history fill lowPlyHistory is always cleared at the start of `iterative_deepening`, so clearing it here is non-functional. closes https://github.com/official-stockfish/Stockfish/pull/6144 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: Daniel Monroe
Date: Wed Jul 2 18:31:04 2025 +0200 Timestamp: 1751473864 Simplify history term in futility pruning Passed simplification STC LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 298816 W: 76814 L: 76881 D: 145121 Elo -0.08 Ptnml(0-2): 726, 35477, 77057, 35434, 714 https://tests.stockfishchess.org/tests/view/683f440f6ec7634154f9dc7f Passed simplification LTC LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 237774 W: 60801 L: 60802 D: 116171 Elo -0.00 Ptnml(0-2): 91, 26088, 66532, 26083, 93 https://tests.stockfishchess.org/tests/view/68441189ffbc71bd236778de closes https://github.com/official-stockfish/Stockfish/pull/6130 Bench: 2411502 see source |
| Windows x64 for modern computers Windows x64 + SSSE3 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: pb00067
Date: Wed Jul 2 18:31:02 2025 +0200 Timestamp: 1751473862 Restore integrity of MovePicker::can_move_king_or_pawn PR6005 broken by PR6071 passed STC non regression https://tests.stockfishchess.org/tests/view/6839791f6ec7634154f9d312 LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 31776 W: 8353 L: 8130 D: 15293 Elo +2.44 Ptnml(0-2): 74, 3566, 8382, 3795, 71 passed LTC non-regression https://tests.stockfishchess.org/tests/view/6839c87a6ec7634154f9d367 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 120756 W: 31015 L: 30899 D: 58842 Elo +0.33 Ptnml(0-2): 50, 12732, 34703, 12838, 55 closes https://github.com/official-stockfish/Stockfish/pull/6119 Bench: 1945300 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 Jun 29 12:33:20 2025 +0200 Timestamp: 1751193200 Disable linux gcc riscv64 (#6145) Temporarily disable it, until we figure out the toolchain issues which are causing the crashes. closes https://github.com/official-stockfish/Stockfish/pull/6145 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: Mon Jun 2 22:12:37 2025 +0200 Timestamp: 1748895157 remove non-functional else since we break out of the loop in the other branch closes https://github.com/official-stockfish/Stockfish/pull/6116 no functional change see source |
| Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64 | Author: Daniel Monroe
Date: Mon Jun 2 22:09:11 2025 +0200 Timestamp: 1748894951 reduce depth by 5 in probcut Passed simplification STC LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 63328 W: 16402 L: 16213 D: 30713 Elo +1.04 Ptnml(0-2): 174, 7378, 16340, 7629, 143 https://tests.stockfishchess.org/tests/view/6833530e6ec7634154f9be7f Passed simplification LTC LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 69936 W: 17795 L: 17625 D: 34516 Elo +0.84 Ptnml(0-2): 29, 7631, 19474, 7809, 25 https://tests.stockfishchess.org/tests/view/68335e386ec7634154f9c266 closes https://github.com/official-stockfish/Stockfish/pull/6120 Bench: 2307268 see source |
| 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: Daniel Monroe
Date: Mon Jun 2 22:05:11 2025 +0200 Timestamp: 1748894711 Simplify corrections in extension margins Passed simplification STC LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 96192 W: 25002 L: 24852 D: 46338 Elo +0.54 Ptnml(0-2): 242, 10868, 25716, 11038, 232 https://tests.stockfishchess.org/tests/view/683b44cb6ec7634154f9d6ac Passed simplification LTC LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 83334 W: 21473 L: 21317 D: 40544 Elo +0.65 Ptnml(0-2): 37, 8877, 23674, 9051, 28 https://tests.stockfishchess.org/tests/view/683b79786ec7634154f9d75a closes https://github.com/official-stockfish/Stockfish/pull/6117 Bench: 2294814 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers 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: Mon Jun 2 21:57:19 2025 +0200 Timestamp: 1748894239 Remove an unnecessary bound check When failing high, it is always true that `alpha < beta` and `beta <= bestValue`. Therefore if alpha and bestValue is not in decisive range, it is guaranteed that beta is not. closes https://github.com/official-stockfish/Stockfish/pull/6115 no functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers 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: Mon Jun 2 21:55:55 2025 +0200 Timestamp: 1748894155 Introduce Secondary TT Aging When a high-depth TT entry fail to produce a cutoff, decrease the stored depth by 1. This is intended to help cases such as #5023 (https://github.com/official-stockfish/Stockfish/issues/5023#issuecomment-2814209391), where entries with extremely high depths prevent TT cutoffs, contributing to search explosions. Passed STC: LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 128800 W: 33502 L: 33053 D: 62245 Elo +1.21 Ptnml(0-2): 331, 15084, 33149, 15477, 359 https://tests.stockfishchess.org/tests/view/683958e56ec7634154f9d2a9 Passed LTC: LLR: 2.97 (-2.94,2.94) <0.50,2.50> Total: 63288 W: 16376 L: 16005 D: 30907 Elo +2.04 Ptnml(0-2): 26, 6712, 17798, 7081, 27 https://tests.stockfishchess.org/tests/view/683aa4026ec7634154f9d469 closes https://github.com/official-stockfish/Stockfish/pull/6113 Bench: 2144705 see source |
| Windows x64 for Haswell CPUs 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: Daniel Monroe
Date: Mon Jun 2 21:52:38 2025 +0200 Timestamp: 1748893958 Simplify away depth condition in IIR Passed simplification STC LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 359520 W: 92714 L: 92849 D: 173957 Elo -0.13 Ptnml(0-2): 977, 42640, 92614, 42599, 930 https://tests.stockfishchess.org/tests/view/6833705d6ec7634154f9c302 Passed simplification LTC LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 201756 W: 51544 L: 51507 D: 98705 Elo +0.06 Ptnml(0-2): 89, 21965, 56728, 22012, 84 https://tests.stockfishchess.org/tests/view/68338e386ec7634154f9c790 Passed simplification VLTC LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 48558 W: 12675 L: 12492 D: 23391 Elo +1.31 Ptnml(0-2): 9, 4779, 14516, 4970, 5 https://tests.stockfishchess.org/tests/view/6838e0b26ec7634154f9d25b closes https://github.com/official-stockfish/Stockfish/pull/6112 Bench: 2302583 see source |