| 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: Sun Jan 12 21:11:27 2025 +0100 Timestamp: 1736712687 Simplify Razoring Passed Non-regression STC: LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 95584 W: 24906 L: 24750 D: 45928 Elo +0.57 Ptnml(0-2): 285, 11227, 24632, 11343, 305 https://tests.stockfishchess.org/tests/view/675e0ed286d5ee47d95429ee Passed Non-regression LTC: LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 191292 W: 48637 L: 48589 D: 94066 Elo +0.09 Ptnml(0-2): 97, 21061, 53276, 21121, 91 https://tests.stockfishchess.org/tests/view/675f08c686d5ee47d9542be3 closes https://github.com/official-stockfish/Stockfish/pull/5724 Bench: 1286274 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: sscg13
Date: Sun Jan 12 21:09:58 2025 +0100 Timestamp: 1736712598 Use same pawn value in both nets when doing material scaling of eval Passed Non-regression STC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 221312 W: 57291 L: 57274 D: 106747 Elo +0.03 Ptnml(0-2): 760, 26152, 56841, 26117, 786 https://tests.stockfishchess.org/tests/view/676e2a101a2f267f20548453 Passed Non-regression LTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 176808 W: 45084 L: 45023 D: 86701 Elo +0.12 Ptnml(0-2): 112, 19418, 49286, 19473, 115 https://tests.stockfishchess.org/tests/view/676f424d1a2f267f2054857f closes https://github.com/official-stockfish/Stockfish/pull/5741 Bench: 1121800 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: Mon Jan 6 00:48:05 2025 +0100 Timestamp: 1736120885 Remove non-functional std::min() closes https://github.com/official-stockfish/Stockfish/pull/5749 No functional change see source |
| 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: Daniel Monroe
Date: Mon Jan 6 00:46:30 2025 +0100 Timestamp: 1736120790 Corrplexity for futility pruning Add corrhist-based term to futility margin Inspired by a recent patch of Shawn Xu, this tweak increases the margin over beta needed to futility prune based on the correction history, with an offset. Passed STC LLR: 2.97 (-2.94,2.94) <0.00,2.00> Total: 545504 W: 141957 L: 140885 D: 262662 Elo +0.68 Ptnml(0-2): 1829, 64226, 139551, 65336, 1810 https://tests.stockfishchess.org/tests/view/67634a8386d5ee47d95439db Passed LTC LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 125994 W: 32199 L: 31695 D: 62100 Elo +1.39 Ptnml(0-2): 97, 13742, 34798, 14280, 80 https://tests.stockfishchess.org/tests/view/6765cf9986d5ee47d9544217 closes https://github.com/official-stockfish/Stockfish/pull/5748 Bench: 999324 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: Shawn Xu
Date: Mon Jan 6 00:45:28 2025 +0100 Timestamp: 1736120728 Update Copyright Year closes https://github.com/official-stockfish/Stockfish/pull/5747 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: Shawn Xu
Date: Mon Jan 6 00:44:25 2025 +0100 Timestamp: 1736120665 Cleanup stats entry Prevents potential issue caused by publicly inheriting from STL container types closes https://github.com/official-stockfish/Stockfish/pull/5746 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 Jan 6 00:43:49 2025 +0100 Timestamp: 1736120629 Remove some incorrectly marked const qualifiers closes https://github.com/official-stockfish/Stockfish/pull/5744 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: Shawn Xu
Date: Mon Jan 6 00:43:37 2025 +0100 Timestamp: 1736120617 Simplify post-lmr conthist bonus Passed Non-regression STC: LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 49184 W: 12735 L: 12528 D: 23921 Elo +1.46 Ptnml(0-2): 134, 5746, 12647, 5909, 156 https://tests.stockfishchess.org/tests/view/6765cd2e86d5ee47d954420e Passed Non-regression LTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 177270 W: 45227 L: 45166 D: 86877 Elo +0.12 Ptnml(0-2): 132, 19498, 49302, 19583, 120 https://tests.stockfishchess.org/tests/view/676721fd86d5ee47d9544489 closes https://github.com/official-stockfish/Stockfish/pull/5734 Bench: 1042099 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: Michael Chaly
Date: Mon Jan 6 00:40:05 2025 +0100 Timestamp: 1736120405 Allow Pv nodes at certain conditions to spawn zero window searches deeper than default In current case it's allowed if there is no best move. Passed STC: https://tests.stockfishchess.org/tests/view/67640fd586d5ee47d9543d5a LLR: 2.96 (-2.94,2.94) <0.00,2.00> Total: 392480 W: 102038 L: 101192 D: 189250 Elo +0.75 Ptnml(0-2): 1303, 46287, 100253, 47055, 1342 Passed LTC: https://tests.stockfishchess.org/tests/view/67671a4686d5ee47d9544476 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 128616 W: 32941 L: 32433 D: 63242 Elo +1.37 Ptnml(0-2): 84, 13997, 35634, 14513, 80 closes https://github.com/official-stockfish/Stockfish/pull/5733 Bench: 1095871 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: mstembera
Date: Sun Dec 22 15:29:42 2024 +0100 Timestamp: 1734877782 Simplify Zobrist keys for captures The Zobrist keys for NO_PIECE are 0 so no need to special case captures. Also the TranspositionTable reference passed to do_null_move() can be const. STC Simplification: https://tests.stockfishchess.org/tests/view/6764a79a86d5ee47d9544005 LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 114240 W: 29654 L: 29523 D: 55063 Elo +0.40 Ptnml(0-2): 329, 12360, 31620, 12473, 338 closes https://github.com/official-stockfish/Stockfish/pull/5731 No functional change see source |
| Windows x64 for Haswell CPUs 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: Sun Dec 22 15:28:15 2024 +0100 Timestamp: 1734877695 Simplify away reductions adjustment for multithreaded search Seem to no longer bring measurable benefit. Passed STC SMP simplification: https://tests.stockfishchess.org/tests/view/6753561a86d5ee47d954151f LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 38000 W: 9864 L: 9656 D: 18480 Elo +1.90 Ptnml(0-2): 53, 4177, 10320, 4409, 41 Passed LTC SMP simplification: https://tests.stockfishchess.org/tests/view/6753d75f86d5ee47d9541669 LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 258674 W: 66314 L: 66335 D: 126025 Elo -0.03 Ptnml(0-2): 77, 26957, 75303, 26910, 90 Passed 16 threads LTC simplification: https://tests.stockfishchess.org/tests/view/675a066286d5ee47d9542296 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 221804 W: 56950 L: 56936 D: 107918 Elo +0.02 Ptnml(0-2): 34, 21491, 67839, 21503, 35 closes https://github.com/official-stockfish/Stockfish/pull/5729 Bench: 1294909 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 Dec 22 15:27:40 2024 +0100 Timestamp: 1734877660 Workaround for clang-format bug closes https://github.com/official-stockfish/Stockfish/pull/5728 No functional change see source |
| Windows x64 for Haswell CPUs 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: Shawn Xu
Date: Sun Dec 22 15:26:39 2024 +0100 Timestamp: 1734877599 Adjust LMR with correction history A positive constant increase in base reduction is applied to counter the decrease in average reduction from this tweak. Passed STC: LLR: 2.98 (-2.94,2.94) <0.00,2.00> Total: 109216 W: 28415 L: 27989 D: 52812 Elo +1.36 Ptnml(0-2): 310, 12848, 27911, 13184, 355 https://tests.stockfishchess.org/tests/view/6760bb0e86d5ee47d9542f26 Passed LTC: LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 66918 W: 17073 L: 16694 D: 33151 Elo +1.97 Ptnml(0-2): 33, 7175, 18666, 7550, 35 https://tests.stockfishchess.org/tests/view/6761e10f86d5ee47d95431fa closes https://github.com/official-stockfish/Stockfish/pull/5727 Bench: 1294909 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: FauziAkram
Date: Sun Dec 22 15:24:09 2024 +0100 Timestamp: 1734877449 Make reductionScale smoother Making the second part of the formula smoother, changing it to a linear function, increasing steadily as reductionScale increases and at the same time, it should be a little bit simpler, therefore the simplification bounds. Passed STC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 83040 W: 21493 L: 21322 D: 40225 Elo +0.72 Ptnml(0-2): 252, 9848, 21209, 9899, 312 https://tests.stockfishchess.org/tests/view/6762145486d5ee47d9543242 Passed LTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 230124 W: 58485 L: 58478 D: 113161 Elo +0.01 Ptnml(0-2): 175, 25620, 63484, 25589, 194 https://tests.stockfishchess.org/tests/view/6762d4ef86d5ee47d9543367 closes https://github.com/official-stockfish/Stockfish/pull/5725 Bench: 1204658 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: Sun Dec 22 15:20:25 2024 +0100 Timestamp: 1734877225 Add CI test with glibcxx assertions enabled Re: https://github.com/official-stockfish/Stockfish/pull/5721#pullrequestreview-2504542601 closes https://github.com/official-stockfish/Stockfish/pull/5723 No functional change 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: Disservin
Date: Sun Dec 22 15:19:53 2024 +0100 Timestamp: 1734877193 Cleanup Evaluate Calls Makes code a bit easier to read as well. closes https://github.com/official-stockfish/Stockfish/pull/5722 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: Shawn Xu
Date: Sun Dec 22 15:19:13 2024 +0100 Timestamp: 1734877153 Prevent out of bounds access of dbg info arrays closes https://github.com/official-stockfish/Stockfish/pull/5721 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: Sun Dec 22 15:17:55 2024 +0100 Timestamp: 1734877075 Remove time reduction for recaptures Passed simplification STC LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 54016 W: 14098 L: 13902 D: 26016 Elo +1.26 Ptnml(0-2): 165, 5797, 14919, 5931, 196 https://tests.stockfishchess.org/tests/view/6758a90486d5ee47d954201e Passed simplification LTC LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 296940 W: 75631 L: 75689 D: 145620 Elo -0.07 Ptnml(0-2): 145, 28928, 90384, 28866, 147 https://tests.stockfishchess.org/tests/view/6758df7a86d5ee47d9542091 closes https://github.com/official-stockfish/Stockfish/pull/5719 Bench: 1148169 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: Sun Dec 22 15:17:33 2024 +0100 Timestamp: 1734877053 Remove Extraneous Parenthesis No longer needed after https://github.com/official-stockfish/Stockfish/pull/5667. closes https://github.com/official-stockfish/Stockfish/pull/5717 No functional change 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: Disservin
Date: Sun Dec 22 15:16:07 2024 +0100 Timestamp: 1734876967 Move Embedded Net Data out of Anon Namespace fixes https://github.com/official-stockfish/Stockfish/issues/5714 closes https://github.com/official-stockfish/Stockfish/pull/5715 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: Disservin
Date: Sun Dec 22 15:16:01 2024 +0100 Timestamp: 1734876961 Update Incbin Library 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: Sun Dec 22 15:14:22 2024 +0100 Timestamp: 1734876862 Tune histories Passed STC: LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 268736 W: 70080 L: 69421 D: 129235 Elo +0.85 Ptnml(0-2): 831, 31795, 68460, 32448, 834 https://tests.stockfishchess.org/tests/view/6750778886d5ee47d9540e7c Passed LTC: LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 505356 W: 129145 L: 127868 D: 248343 Elo +0.88 Ptnml(0-2): 307, 54901, 140959, 56230, 281 https://tests.stockfishchess.org/tests/view/675367de86d5ee47d9541536 closes https://github.com/official-stockfish/Stockfish/pull/5712 Bench: 1148169 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: Nonlinear2
Date: Sun Dec 8 22:24:29 2024 +0100 Timestamp: 1733693069 Fix duplicate code (#5711) closes https://github.com/official-stockfish/Stockfish/pull/5711 No functional change 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: mstembera
Date: Sun Dec 8 19:58:34 2024 +0100 Timestamp: 1733684314 Small Major/Minor piece key simplification/optimization. closes https://github.com/official-stockfish/Stockfish/pull/5710 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: Michael Chaly
Date: Sun Dec 8 19:57:59 2024 +0100 Timestamp: 1733684279 Refine statscore for captures Continuation of previous attempts there. Now instead of using capture history with a static offset also add the value of the captured piece in the same way at it is used in movepicker. Passed STC: https://tests.stockfishchess.org/tests/view/674aa3d386d5ee47d95404aa LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 116480 W: 30433 L: 29999 D: 56048 Elo +1.29 Ptnml(0-2): 361, 13720, 29662, 14118, 379 Passed LTC: https://tests.stockfishchess.org/tests/view/674c4b2d86d5ee47d954073f LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 133542 W: 34365 L: 33847 D: 65330 Elo +1.35 Ptnml(0-2): 78, 14585, 36934, 15089, 85 closes https://github.com/official-stockfish/Stockfish/pull/5706 Bench: 934447 see source |