| 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: Sat Jan 25 20:59:33 2025 +0100 Timestamp: 1737835173 Simplify futility margin in lmr for quiets. Replace the "low bestValue condition" with whether there is a best move. Passed Simplification STC LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 102560 W: 26517 L: 26367 D: 49676 Elo +0.51 Ptnml(0-2): 328, 12223, 26036, 12357, 336 https://tests.stockfishchess.org/tests/view/679310e4ca18a2c66da02af8 Passed Simplification LTC LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 66942 W: 17130 L: 16953 D: 32859 Elo +0.92 Ptnml(0-2): 52, 7459, 18290, 7600, 70 https://tests.stockfishchess.org/tests/view/679459a3e96bfb672ad18ddf closes https://github.com/official-stockfish/Stockfish/pull/5820 Bench: 1438043 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: Stefan Geschwentner
Date: Sat Jan 25 20:56:14 2025 +0100 Timestamp: 1737834974 Consider more nodes as ttPv nodes. Remove depth condition in propagation rule for ttPv state from a node to it childs. Because this change marks more nodes as ttPv, we have a time sensitive ttPv reduction rule and the STC snd LTC seems to show bad scaling. So i have also submitted a VLTC non-regression to check the scaling at higher time control. The results gives a little indication that we have perhaps good scaling with more ttPv nodes so that could be further explored. Passed non-regression STC: LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 82528 W: 21627 L: 21453 D: 39448 Elo +0.73 Ptnml(0-2): 317, 9809, 20891, 9877, 370 https://tests.stockfishchess.org/tests/view/678e608cd63764e34db49ad7 Passed non-regression LTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 310440 W: 78879 L: 78956 D: 152605 Elo -0.09 Ptnml(0-2): 255, 34915, 84938, 34876, 236 https://tests.stockfishchess.org/tests/view/678fab89ac8f8f5496155f3c Passed non-regression VLTC for scaling verification: LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 59496 W: 15158 L: 14983 D: 29355 Elo +1.02 Ptnml(0-2): 15, 6039, 17470, 6204, 20 https://tests.stockfishchess.org/tests/view/6794bd1f4f7de645171fb33b closes https://github.com/official-stockfish/Stockfish/pull/5819 Bench: 1829507 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: Sat Jan 25 20:53:53 2025 +0100 Timestamp: 1737834833 Better nonpawn indexing Improves indexing scheme, by noting that both sides are likely to access the same non_pawn_index nearby. LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 75936 W: 19905 L: 19554 D: 36477 Elo +1.61 Ptnml(0-2): 190, 7863, 21554, 8128, 233 https://tests.stockfishchess.org/tests/view/67904d0cfc8c306ba6cea332 closes https://github.com/official-stockfish/Stockfish/pull/5816 No functional change Co-authored-by: Andrew Grant <> 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: Viren6
Date: Sat Jan 25 20:51:31 2025 +0100 Timestamp: 1737834691 Revert "Moving up the if position is or has been on the PV reduction" Passed VVLTC 1: LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 68362 W: 17830 L: 17523 D: 33009 Elo +1.56 Ptnml(0-2): 9, 6253, 21347, 6566, 6 https://tests.stockfishchess.org/tests/view/6790271cfc8c306ba6cea2c1 Passed VVLTC 2: LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 113256 W: 29158 L: 28721 D: 55377 Elo +1.34 Ptnml(0-2): 13, 10521, 35122, 10960, 12 https://tests.stockfishchess.org/tests/view/678d3e47d63764e34db491a3 closes https://github.com/official-stockfish/Stockfish/pull/5815 bench 1943998 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: Robert Nurnberg @ elitebook
Date: Sat Jan 25 20:42:50 2025 +0100 Timestamp: 1737834170 Do not change TB cursed wins to draws if requested If Syzygy50MoveRule is false, do not calls to is_draw() need to be guarded. Also fixes a TB rootmove ranking issue in this case. closes https://github.com/official-stockfish/Stockfish/pull/5814 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: pkrisz99
Date: Sat Jan 25 20:41:37 2025 +0100 Timestamp: 1737834097 Add improving to a condition of NMP This patch makes one of the conditions for null-move pruning depend on whether we're improving. Keep in mind that it relies on the "classical" definiton, rather than the refined one. Passed STC: https://tests.stockfishchess.org/tests/view/678d5267d63764e34db49720 LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 38976 W: 10296 L: 9974 D: 18706 Elo +2.87 Ptnml(0-2): 135, 4504, 9902, 4798, 149 Passed LTC: https://tests.stockfishchess.org/tests/view/678d5891d63764e34db49731 LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 275772 W: 70655 L: 69836 D: 135281 Elo +1.03 Ptnml(0-2): 217, 30615, 75394, 31452, 208 closes https://github.com/official-stockfish/Stockfish/pull/5813 Bench: 2475787 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: Sat Jan 25 20:33:43 2025 +0100 Timestamp: 1737833623 Fix undefined behavior From cppreference: "It is undefined behavior to read from the member of the union that wasn't most recently written. Many compilers implement, as a non-standard language extension, the ability to read inactive members of a union." closes https://github.com/official-stockfish/Stockfish/pull/5811 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: FauziAkram
Date: Sat Jan 25 20:29:40 2025 +0100 Timestamp: 1737833380 Comments Tweak * Remove from comments, hardcoded exact values for parameters that are subject to tuning. * Remove the Elo worth, as they are now completely outdated, making them irrelevant and potentially misleading. * Consolidated scaling-related comments into a single section for clarity. Used asterisks (*) to highlight parameters significantly affected by scaling, given their separation in the code. closes https://github.com/official-stockfish/Stockfish/pull/5810 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: Nonlinear2
Date: Sat Jan 25 20:27:11 2025 +0100 Timestamp: 1737833231 Increase prior countermove bonus if TT move Passed STC: https://tests.stockfishchess.org/tests/view/678c4c8bf4dc0a8b4ae8db5c LLR: 2.97 (-2.94,2.94) <0.00,2.00> Total: 273408 W: 71089 L: 70415 D: 131904 Elo +0.86 Ptnml(0-2): 937, 32466, 69229, 33130, 942 Passed LTC: https://tests.stockfishchess.org/tests/view/678ccabdf4dc0a8b4ae8dd7a LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 148614 W: 38138 L: 37584 D: 72892 Elo +1.30 Ptnml(0-2): 97, 16450, 40689, 16944, 127 closes https://github.com/official-stockfish/Stockfish/pull/5809 Bench: 1582867 see source |
| Windows x64 for Haswell CPUs 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: Stefan Geschwentner
Date: Sat Jan 25 20:23:33 2025 +0100 Timestamp: 1737833013 Add move count based reduction. Do less reduction which is linear increasing with move count (factor = 64). Passed STC: LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 191488 W: 49982 L: 49432 D: 92074 Elo +1.00 Ptnml(0-2): 731, 22523, 48614, 23217, 659 https://tests.stockfishchess.org/tests/view/678d0b29d63764e34db4904b Passed LTC: LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 90582 W: 23150 L: 22717 D: 44715 Elo +1.66 Ptnml(0-2): 73, 9936, 24822, 10405, 55 https://tests.stockfishchess.org/tests/view/678d347cd63764e34db4916f closes https://github.com/official-stockfish/Stockfish/pull/5807 Bench: 1803474 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: Sat Jan 25 20:17:39 2025 +0100 Timestamp: 1737832659 Clean up pack reordering closes https://github.com/official-stockfish/Stockfish/pull/5802 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: mstembera
Date: Sat Jan 25 20:12:38 2025 +0100 Timestamp: 1737832358 Generate lookup indices at compile time. Credit to @Disservin: the constexpr lsb is just the De Bruijn bitscan with the xor from the cpw https://www.chessprogramming.org/BitScan closes https://github.com/official-stockfish/Stockfish/pull/5801 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: Sat Jan 25 20:09:09 2025 +0100 Timestamp: 1737832149 simplify accumulator updates After #5759 accumulator updates are strictly on a per-move basis. Therefore, the generic code for updating multiple moves at once is no longer needed. Passed Non-regression STC: LLR: 3.00 (-2.94,2.94) <-1.75,0.25> Total: 81696 W: 21204 L: 21039 D: 39453 Elo +0.70 Ptnml(0-2): 210, 8431, 23416, 8566, 225 https://tests.stockfishchess.org/tests/view/67823a24a31c4c13e83518a8 closes https://github.com/official-stockfish/Stockfish/pull/5760 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 Jan 18 21:33:17 2025 +0100 Timestamp: 1737232397 Replace depth increase condition with !opponentWorsening Passed simplification STC LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 220544 W: 57417 L: 57399 D: 105728 Elo +0.03 Ptnml(0-2): 816, 26554, 55540, 26520, 842 https://tests.stockfishchess.org/tests/view/678970e38082388fa0cbfe02 Passed simplification LTC LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 132600 W: 33868 L: 33760 D: 64972 Elo +0.28 Ptnml(0-2): 126, 14770, 36390, 14898, 116 https://tests.stockfishchess.org/tests/view/678accabc00c743bc9e9fc7f closes https://github.com/official-stockfish/Stockfish/pull/5798 bench 1632964 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: Daniel Monroe
Date: Sat Jan 18 21:27:42 2025 +0100 Timestamp: 1737232062 Refine probcut Allow probcut for depth 3 and disable deeper verification search when it would simply repeat the qsearch. Passed STC LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 283232 W: 74450 L: 73760 D: 135022 Elo +0.85 Ptnml(0-2): 1052, 33780, 71349, 34296, 1139 https://tests.stockfishchess.org/tests/view/67843b58460e2910c51ddcc6 Passed LTC LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 339654 W: 86845 L: 85893 D: 166916 Elo +0.97 Ptnml(0-2): 298, 37734, 92802, 38704, 289 https://tests.stockfishchess.org/tests/view/678aa722c00c743bc9e9face closes https://github.com/official-stockfish/Stockfish/pull/5797 bench 1288648 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: Sat Jan 18 21:24:01 2025 +0100 Timestamp: 1737231841 tuned TM values Tuned 70k games at 240+2.4 th 2: https://tests.stockfishchess.org/tests/view/6783b1b16ddf09c0b4b703f5 Failed STC: LLR: -2.93 (-2.94,2.94) <0.00,2.00> Total: 491872 W: 128260 L: 127804 D: 235808 Elo +0.32 Ptnml(0-2): 1579, 55449, 131572, 55609, 1727 https://tests.stockfishchess.org/tests/view/6785a045460e2910c51de4b8 Passed LTC: LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 154824 W: 39315 L: 38874 D: 76635 Elo +0.99 Ptnml(0-2): 110, 15809, 45147, 16222, 124 https://tests.stockfishchess.org/tests/view/678ac722c00c743bc9e9fc35 Passed VLTC: LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 77404 W: 19825 L: 19452 D: 38127 Elo +1.67 Ptnml(0-2): 18, 7262, 23765, 7643, 14 https://tests.stockfishchess.org/tests/view/678b2a98c00c743bc9ea048c closes https://github.com/official-stockfish/Stockfish/pull/5796 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: FauziAkram
Date: Sat Jan 18 21:18:48 2025 +0100 Timestamp: 1737231528 Moving up the if position is or has been on the PV reduction Passed STC: LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 29664 W: 7880 L: 7570 D: 14214 Elo +3.63 Ptnml(0-2): 93, 3487, 7390, 3741, 121 https://tests.stockfishchess.org/tests/view/678ac957c00c743bc9e9fc3f Passed LTC: LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 81354 W: 20903 L: 20487 D: 39964 Elo +1.78 Ptnml(0-2): 66, 9003, 22123, 9419, 66 https://tests.stockfishchess.org/tests/view/678ad359c00c743bc9e9fcfa closes https://github.com/official-stockfish/Stockfish/pull/5794 Bench: 1414638 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: Sat Jan 18 21:13:12 2025 +0100 Timestamp: 1737231192 Optimize find_nnz() by reducing the size of lookup_indices https://tests.stockfishchess.org/tests/view/67896b688082388fa0cbfdee LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 452800 W: 118213 L: 117300 D: 217287 Elo +0.70 Ptnml(0-2): 1638, 50255, 121864, 50842, 1801 It's faster to shrink lookup_indices[] to 8 bit and zero extend to 16 bit using _mm_cvtepu8_epi16() than to read the larger 16 bit version. I suspect that having the constants available at compile time isn't too valuable and can be simplified back to generating at initialization time since this version also almost passed. https://tests.stockfishchess.org/tests/view/67863057460e2910c51de7e0 I will try that as a follow up. closes https://github.com/official-stockfish/Stockfish/pull/5793 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: Michael Chaly
Date: Sat Jan 18 21:04:55 2025 +0100 Timestamp: 1737230695 Introduce one more continuation history This one is counter counter counter history - with really low update value and divided by 3 in movepicker unlike the other ones. Passed STC: https://tests.stockfishchess.org/tests/view/67861495460e2910c51de720 LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 44352 W: 11699 L: 11370 D: 21283 Elo +2.58 Ptnml(0-2): 156, 5098, 11361, 5383, 178 Passed LTC: https://tests.stockfishchess.org/tests/view/6786e89e3b8f206a2696b646 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 432660 W: 110355 L: 109207 D: 213098 Elo +0.92 Ptnml(0-2): 381, 48214, 118039, 49268, 428 closes https://github.com/official-stockfish/Stockfish/pull/5792 Bench: 1491837 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: Nonlinear2
Date: Sat Jan 18 21:02:04 2025 +0100 Timestamp: 1737230524 Increase history bonus of TT moves Passed STC: https://tests.stockfishchess.org/tests/view/678807653b8f206a2696b78b LLR: 2.96 (-2.94,2.94) <0.00,2.00> Total: 42208 W: 11113 L: 10783 D: 20312 Elo +2.72 Ptnml(0-2): 148, 4919, 10651, 5227, 159 Passed LTC: https://tests.stockfishchess.org/tests/view/6788a8463b8f206a2696b956 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 122886 W: 31454 L: 30952 D: 60480 Elo +1.42 Ptnml(0-2): 105, 13567, 33619, 14025, 127 closes https://github.com/official-stockfish/Stockfish/pull/5791 Bench: 1760081 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers 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 Jan 18 20:58:41 2025 +0100 Timestamp: 1737230321 Remove the cap from maxscale for x moves in y seconds TC Passed STC 40/10: LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 48800 W: 13044 L: 12835 D: 22921 Elo +1.49 Ptnml(0-2): 229, 5457, 12863, 5578, 273 https://tests.stockfishchess.org/tests/view/67862dae460e2910c51de7c9 Passed LTC 40/40: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 141296 W: 36110 L: 36014 D: 69172 Elo +0.24 Ptnml(0-2): 222, 14350, 41440, 14382, 254 https://tests.stockfishchess.org/tests/view/678799903b8f206a2696b6f8 Passed STC 80/8: LLR: 2.99 (-2.94,2.94) <-1.75,0.25> Total: 155120 W: 41442 L: 41346 D: 72332 Elo +0.22 Ptnml(0-2): 953, 17232, 41102, 17312, 961 https://tests.stockfishchess.org/tests/view/678aca4dc00c743bc9e9fc47 Passed LTC 80/60: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 93950 W: 24042 L: 23904 D: 46004 Elo +0.51 Ptnml(0-2): 80, 9020, 28627, 9178, 70 https://tests.stockfishchess.org/tests/view/678af705c00c743bc9e9fe94 closes https://github.com/official-stockfish/Stockfish/pull/5790 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: ppigazzini
Date: Sat Jan 18 20:56:23 2025 +0100 Timestamp: 1737230183 Return stockfish-macos-m1-apple-silicon.tar https://github.com/[ppigazzini/stockfish-downloader now uses the official SF script for POSIX systems. closes https://github.com/official-stockfish/Stockfish/pull/5789 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: Sat Jan 18 20:54:55 2025 +0100 Timestamp: 1737230095 simplify razoring Passed Non-regression STC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 93056 W: 24215 L: 24054 D: 44787 Elo +0.60 Ptnml(0-2): 364, 11085, 23470, 11244, 365 https://tests.stockfishchess.org/tests/view/67883a5d3b8f206a2696b804 Passed Non-regression LTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 66564 W: 16971 L: 16794 D: 32799 Elo +0.92 Ptnml(0-2): 56, 7403, 18192, 7570, 61 https://tests.stockfishchess.org/tests/view/6789ffa78082388fa0cbfe95 closes https://github.com/official-stockfish/Stockfish/pull/5788 bench 1500649 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: Sat Jan 18 20:52:07 2025 +0100 Timestamp: 1737229927 Update CI to Ubuntu 22.04 from 20.04 fixes #5756 closes https://github.com/official-stockfish/Stockfish/pull/5786 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: Daniel Monroe
Date: Sat Jan 18 20:50:04 2025 +0100 Timestamp: 1737229804 retroactive reduction decrease if eval improves If the previous reduction was large but the static eval improves then increase the search depth. This patch looks at the next node when calculating the reduction, something I don't think has been done before and which can probably used for further elo gaining patches. Passed STC LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 55936 W: 14813 L: 14462 D: 26661 Elo +2.18 Ptnml(0-2): 220, 6565, 14094, 6822, 267 https://tests.stockfishchess.org/tests/view/67845b70460e2910c51ddcff Passed LTC LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 189468 W: 48411 L: 47773 D: 93284 Elo +1.17 Ptnml(0-2): 180, 20801, 52131, 21445, 177 https://tests.stockfishchess.org/tests/view/6784e2cb460e2910c51ddf86 closes https://github.com/official-stockfish/Stockfish/pull/5785 bench: 1512884 see source |