| 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 |
| 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: xu-shawn
Date: Sun Dec 8 19:56:01 2024 +0100 Timestamp: 1733684161 Add Leela Data Attribution closes https://github.com/official-stockfish/Stockfish/pull/5705 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: Shawn Xu
Date: Sun Dec 8 19:55:10 2024 +0100 Timestamp: 1733684110 Simplify Prior Capture Countermove Bonus Passed Non-regression STC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 184032 W: 47626 L: 47568 D: 88838 Elo +0.11 Ptnml(0-2): 590, 21808, 47238, 21714, 666 https://tests.stockfishchess.org/tests/view/67412c7686d5ee47d953f743 Passed Non-regression LTC: LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 169218 W: 43395 L: 43323 D: 82500 Elo +0.15 Ptnml(0-2): 302, 18567, 46791, 18655, 294 https://tests.stockfishchess.org/tests/view/6743b7e086d5ee47d953f9a6 closes https://github.com/official-stockfish/Stockfish/pull/5701 Bench: 1130692 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: Carlos Esparza
Date: Sun Dec 8 19:54:18 2024 +0100 Timestamp: 1733684058 Simplify picking of evasion moves Sort evasions before we start returning them in next_move() (just like every other kind of move) instead of looking for the biggest element on every call to next_move(). The bench number changes because the old method is not equivalent to a stable sort. Passed STC: LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 132064 W: 34318 L: 34204 D: 63542 Elo +0.30 Ptnml(0-2): 392, 15522, 34106, 15604, 408 https://tests.stockfishchess.org/tests/view/6743fee086d5ee47d953f9ca Passed LTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 97542 W: 24899 L: 24757 D: 47886 Elo +0.51 Ptnml(0-2): 63, 10646, 27193, 10824, 45 https://tests.stockfishchess.org/tests/view/674509cd86d5ee47d953fb96 closes https://github.com/official-stockfish/Stockfish/pull/5700 Bench: 1094825 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 Dec 8 19:52:16 2024 +0100 Timestamp: 1733683936 Same weight for black and white nonPawnCorrection history Since we don't have color dependent parameters in NNUE eval, it also has no sense IMO to have color dependent parameters in correction histories. Ideally a fixed depth search on a single thread should be determistic, so delivering the same result (move) if we just flip colors on the board. Patch replaces 2 parameters (122 and 185) with just one value 154 (= the avg of the two). Passed STC-non regression https://tests.stockfishchess.org/tests/view/6740a63286d5ee47d953f656 LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 122336 W: 31499 L: 31372 D: 59465 Elo +0.36 Ptnml(0-2): 336, 14535, 31301, 14658, 338 Passed LTC-non regression https://tests.stockfishchess.org/tests/view/67419bae86d5ee47d953f7b6 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 101400 W: 25870 L: 25731 D: 49799 Elo +0.48 Ptnml(0-2): 78, 11109, 28166, 11290, 57 closes https://github.com/official-stockfish/Stockfish/pull/5698 Bench: 1215483 see source |