| 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: peregrineshahin
Date: Thu Dec 14 18:36:45 2023 +0100 Timestamp: 1702575405 Track seldepth in qsearch too Sometimes if we count the reported PV length, it turns out to be longer than the selective depth reported. This fixes this behavior by applying the selective depth to qsearch since we do report PVs from it as well. Passed non-regression STC: https://tests.stockfishchess.org/tests/view/656cf5b66980e15f69c7499d LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 223648 W: 56372 L: 56356 D: 110920 Elo +0.02 Ptnml(0-2): 710, 25580, 59231, 25590, 713 closes https://github.com/official-stockfish/Stockfish/pull/4903 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: Shahin M. Shahin
Date: Thu Dec 14 18:35:38 2023 +0100 Timestamp: 1702575338 Fix TB score output in UCI without using TB This is a rewrite of the fix introduced for https://github.com/official-stockfish/Stockfish/issues/4413 in https://github.com/official-stockfish/Stockfish/pull/4591 by @windfishballad it targets only the relevant part of this issue that returns TB scores (CP 20000) without using TB due to the downgrading of potentially false mates from the TT to an optimal TB score. the difference is that it is a much clearer code that introduces a separate TB_VALUE constant to account for a correct distance from the TB_VALUE with MAX_PLY. the originally posted position in the issue does not trigger the problem anymore, so here is a new position to test: ``` position fen 3k4/8/8/8/8/8/3BN3/3K4 w - - 0 1 go infinite ``` Passed non-regression STC: https://tests.stockfishchess.org/tests/view/65578994136acbc57353b258 LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 119264 W: 29993 L: 29863 D: 59408 Elo +0.38 Ptnml(0-2): 372, 13692, 31379, 13812, 377 Passed non-regression LTC: https://tests.stockfishchess.org/tests/view/6558323f136acbc57353c1ca LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 237834 W: 58791 L: 58792 D: 120251 Elo -0.00 Ptnml(0-2): 193, 26200, 66111, 26241, 172 fixes https://github.com/official-stockfish/Stockfish/issues/4413 closes https://github.com/official-stockfish/Stockfish/pull/4591 closes https://github.com/official-stockfish/Stockfish/pull/4882 Bench: 1305821 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: Muzhen Gaming
Date: Sun Dec 10 23:23:28 2023 +0100 Timestamp: 1702247008 VLTC Search parameters tune The SPSA tuning was done for 44k games at 120+1.2. https://tests.stockfishchess.org/tests/view/656ee2a76980e15f69c7767f. Note that the tune was originally done in combination with the recent dual NNUE idea (see #4910). VLTC: https://tests.stockfishchess.org/tests/view/65731ccbf09ce1261f12246e LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 52806 W: 13069 L: 12760 D: 26977 Elo +2.03 Ptnml(0-2): 19, 5498, 15056, 5815, 15 VLTC SMP: https://tests.stockfishchess.org/tests/view/65740ffaf09ce1261f1239ba LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 27630 W: 6934 L: 6651 D: 14045 Elo +3.56 Ptnml(0-2): 1, 2643, 8243, 2928, 0 Estimated close to neutral at LTC: https://tests.stockfishchess.org/tests/view/6575485a8ec68176cf7d9423 Elo: -0.59 ± 1.8 (95%) LOS: 26.6% Total: 32060 W: 7859 L: 7913 D: 16288 Elo -0.59 Ptnml(0-2): 20, 3679, 8676, 3645, 10 nElo: -1.21 ± 3.8 (95%) PairsRatio: 0.99 closes https://github.com/official-stockfish/Stockfish/pull/4912 Bench: 1283323 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: ppigazzini
Date: Sun Dec 10 23:18:21 2023 +0100 Timestamp: 1702246701 Simplify the code to get the native flags closes https://github.com/official-stockfish/Stockfish/pull/4908 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: Taras Vuk
Date: Sun Dec 10 23:17:14 2023 +0100 Timestamp: 1702246634 Remove moveMalus Passed STC: https://tests.stockfishchess.org/tests/view/656e0bb86980e15f69c763fa LLR: 3.15 (-2.94,2.94) <-1.75,0.25> Total: 123008 W: 30973 L: 30831 D: 61204 Elo +0.40 Ptnml(0-2): 368, 14032, 32568, 14162, 374 closes https://github.com/official-stockfish/Stockfish/pull/4905 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: Disservin
Date: Sun Dec 10 23:16:12 2023 +0100 Timestamp: 1702246572 Revert "Temporarily disable CI include checks" This reverts commit 8f65953583a2abc34041b087120a378e22d0509d. closes https://github.com/official-stockfish/Stockfish/pull/4904 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: FauziAkram
Date: Mon Dec 4 11:33:58 2023 +0100 Timestamp: 1701686038 Remove cutNode condition cutNode condition seems to be irrelevant. Passed STC: LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 24224 W: 6206 L: 5970 D: 12048 Elo +3.38 Ptnml(0-2): 69, 2818, 6122, 3014, 89 https://tests.stockfishchess.org/tests/view/65686910136acbc5735529ec Passed LTC: LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 236538 W: 58624 L: 58622 D: 119292 Elo +0.00 Ptnml(0-2): 136, 26955, 64091, 26945, 142 https://tests.stockfishchess.org/tests/view/6568925a136acbc573552d8f closes https://github.com/official-stockfish/Stockfish/pull/4901 Bench: 1244386 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: ppigazzini
Date: Mon Dec 4 11:27:28 2023 +0100 Timestamp: 1701685648 Update GitHub workflows - Use the latest version of the actions - Use commit hash for actions from little providers - Update Intel SDE to 9.27 closes https://github.com/official-stockfish/Stockfish/pull/4900 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: Sebastian Buchwald
Date: Mon Dec 4 11:26:09 2023 +0100 Timestamp: 1701685569 Temporarily disable CI include checks The include checks currently fail because of broken LLVM nightly packages: https://github.com/llvm/llvm-project/issues/73402. closes https://github.com/official-stockfish/Stockfish/pull/4899 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: lonfom169
Date: Sat Dec 2 11:46:44 2023 +0100 Timestamp: 1701514004 Tweak return value in futility pruning In futility pruning, return the average between eval and beta. Passed STC: https://tests.stockfishchess.org/tests/view/65680bb6136acbc5735521d7 LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 15200 W: 3926 L: 3642 D: 7632 Elo +6.49 Ptnml(0-2): 36, 1699, 3867, 1941, 57 Passed LTC: https://tests.stockfishchess.org/tests/view/656817fc136acbc573552304 LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 200376 W: 49700 L: 49036 D: 101640 Elo +1.15 Ptnml(0-2): 110, 22584, 54137, 23246, 111 closes https://github.com/official-stockfish/Stockfish/pull/4897 Bench: 1403703 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: cj5716
Date: Sat Dec 2 11:45:38 2023 +0100 Timestamp: 1701513938 Remove recaptures stage in qsearch Simplify an old commit https://github.com/official-stockfish/Stockfish/commit/72760c05c64d1fb2bb71c2ac54acfbeecf513b87. Search is not stuck on the test position given r1n1n1b1/1P1P1P1P/1N1N1N2/2RnQrRq/2pKp3/3BNQbQ/k7/4Bq2 w - - 0 1 Passed STC: https://tests.stockfishchess.org/tests/view/6567050d136acbc573550919 LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 236160 W: 59475 L: 59475 D: 117210 Elo +0.00 Ptnml(0-2): 841, 28266, 59816, 28366, 791 Passed LTC: https://tests.stockfishchess.org/tests/view/6567d133136acbc573551c78 LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 201690 W: 49630 L: 49593 D: 102467 Elo +0.06 Ptnml(0-2): 128, 23214, 54122, 23255, 126 closes https://github.com/official-stockfish/Stockfish/pull/4896 Bench: 1604361 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: Taras Vuk
Date: Sat Dec 2 11:41:31 2023 +0100 Timestamp: 1701513691 Skip LMR for 2nd move at the root only This patch reverts commit by Vizvezdenec: https://github.com/official-stockfish/Stockfish/commit/27139dedac14af400f5b18e2ab50aca3f8cf0e33 Passed STC: https://tests.stockfishchess.org/tests/view/65660b4a136acbc57354f13d LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 301952 W: 76271 L: 76344 D: 149337 Elo -0.08 Ptnml(0-2): 1053, 36293, 76348, 36238, 1044 Passed LTC: https://tests.stockfishchess.org/tests/view/656738ab136acbc573550e39 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 25050 W: 6283 L: 6063 D: 12704 Elo +3.05 Ptnml(0-2): 10, 2756, 6775, 2972, 12 closes https://github.com/official-stockfish/Stockfish/pull/4895 Bench: 1722961 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: Sat Dec 2 11:40:36 2023 +0100 Timestamp: 1701513636 Simplify quietMoveMalus malus Use a simple depth instead of depth + 1 in the quietMoveMalus formula. Passed STC: https://tests.stockfishchess.org/tests/view/65636bf0136acbc57354b662 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 105248 W: 26680 L: 26532 D: 52036 Elo +0.49 Ptnml(0-2): 409, 12590, 26481, 12732, 412 Passed LTC: https://tests.stockfishchess.org/tests/view/6563b5db136acbc57354bcab LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 204204 W: 50200 L: 50166 D: 103838 Elo +0.06 Ptnml(0-2): 123, 23331, 55145, 23395, 108 closes https://github.com/official-stockfish/Stockfish/pull/4893 Bench: 1717495 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: cj5716
Date: Sat Dec 2 11:38:18 2023 +0100 Timestamp: 1701513498 Simplify promotion move generation closes https://github.com/official-stockfish/Stockfish/pull/4892 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: FauziAkram
Date: Sat Dec 2 11:35:28 2023 +0100 Timestamp: 1701513328 Simplify doDeeperSearch Removing dependence on d simplifies the doDeeperSearch formula and eliminates a variable that is not necessary in this context. Passed STC: https://tests.stockfishchess.org/tests/view/65647980136acbc57354c9f6 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 37440 W: 9558 L: 9334 D: 18548 Elo +2.08 Ptnml(0-2): 127, 4439, 9375, 4641, 138 Passed LTC: https://tests.stockfishchess.org/tests/view/6564c3f0136acbc57354d126 LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 113946 W: 27993 L: 27864 D: 58089 Elo +0.39 Ptnml(0-2): 67, 12975, 30783, 13058, 90 closes https://github.com/official-stockfish/Stockfish/pull/4888 Bench: 1427733 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: Muzhen Gaming
Date: Sat Dec 2 11:30:47 2023 +0100 Timestamp: 1701513047 Simplify move history reduction Recent VLTC search tuning has suggested that the depth limit can be increased by a lot. This patch simplifies away the depth-based bonus from statScore reduction, making the divisor a constant. Passed STC: https://tests.stockfishchess.org/tests/view/656201f5136acbc573549791 LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 91520 W: 23130 L: 22967 D: 45423 Elo +0.62 Ptnml(0-2): 282, 10947, 23141, 11106, 284 Passed LTC: https://tests.stockfishchess.org/tests/view/6562b43a136acbc57354a581 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 352902 W: 86796 L: 86917 D: 179189 Elo -0.12 Ptnml(0-2): 190, 40227, 95741, 40100, 193 closes https://github.com/official-stockfish/Stockfish/pull/4886 Bench: 1297179 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: Stefan Geschwentner
Date: Sat Dec 2 11:23:15 2023 +0100 Timestamp: 1701512595 Simplify history update. Removal of the slowdown factor from the history update formula with corresponding adjustment of the stat bonus used in the search. Passed STC: https://tests.stockfishchess.org/tests/view/655e1079136acbc573544744 LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 128096 W: 32355 L: 32235 D: 63506 Elo +0.33 Ptnml(0-2): 466, 15187, 32573, 15405, 417 Passed LTC: https://tests.stockfishchess.org/tests/view/655f4e60136acbc573546266 LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 50652 W: 12653 L: 12459 D: 25540 Elo +1.33 Ptnml(0-2): 28, 5666, 13751, 5846, 35 closes https://github.com/official-stockfish/Stockfish/pull/4883 Bench: 1303857 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: Mon Nov 20 19:10:38 2023 +0100 Timestamp: 1700503838 Reformat some comments Tests used to derive some Elo worth comments: https://tests.stockfishchess.org/tests/view/653cf6b7cc309ae83956263a https://tests.stockfishchess.org/tests/view/655250b7136acbc573534711 https://tests.stockfishchess.org/tests/view/65525767136acbc5735347b9 https://tests.stockfishchess.org/tests/view/65525aa1136acbc573534801 closes https://github.com/official-stockfish/Stockfish/pull/4879 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: FauziAkram
Date: Mon Nov 20 19:00:47 2023 +0100 Timestamp: 1700503247 Remove doEvenDeeperSearch Passed STC: LLR: 2.98 (-2.94,2.94) <-1.75,0.25> Total: 51040 W: 13014 L: 12804 D: 25222 Elo +1.43 Ptnml(0-2): 166, 6032, 12917, 6236, 169 https://tests.stockfishchess.org/tests/view/65525aa1136acbc573534801 Passed LTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 165168 W: 40863 L: 40789 D: 83516 Elo +0.16 Ptnml(0-2): 73, 18783, 44792, 18869, 67 https://tests.stockfishchess.org/tests/view/65535af5136acbc573535c84 closes https://github.com/official-stockfish/Stockfish/pull/4880 Bench: 1477007 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: Mon Nov 20 18:59:01 2023 +0100 Timestamp: 1700503141 Change depth - 1 to newDepth Replacing 'depth - 1' with 'newDepth' in the singularbeta formula utilizes existing variables more succinctly. closes https://github.com/official-stockfish/Stockfish/pull/4876 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: Stefan Geschwentner
Date: Thu Nov 16 09:10:20 2023 +0100 Timestamp: 1700122220 Fix undefined behavior in search. We use following line to clamp the search depth in some range: Depth d = std::clamp(newDepth - r, 1, newDepth + 1); Through negative extension its possible that the maximum value becomes smaller than the minimum value but then the behavior is undefined (see https://en.cppreference.com/w/cpp/algorithm/clamp). So replace this line with a safe implementation. Remark: We have in recent master already one line where up to 3 negative extensions are possible which could trigger this undefined behavior but this can only be happen for completed depth > 24 so its not discovered by our default bench. Recent negative extension tests by @fauzi shows then this undefined behavior with wrong bench numbers. closes https://github.com/official-stockfish/Stockfish/pull/4877 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: Thu Nov 16 09:01:57 2023 +0100 Timestamp: 1700121717 CI updates - updates the SDE action to v2.2 - removes the linux x86-32 builds, which were almost unused, and the build process under SDE started failing recently, possibly related to glibc update (The futex facility returned an unexpected error code.) closes https://github.com/official-stockfish/Stockfish/pull/4875 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: Wed Nov 15 19:35:14 2023 +0100 Timestamp: 1700073314 Symmetrize optimism Removes some additional parameters, making the term more logical at the same time. Passed STC: https://tests.stockfishchess.org/tests/view/6550e896136acbc5735328ed LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 271104 W: 68441 L: 68480 D: 134183 Elo -0.05 Ptnml(0-2): 827, 32590, 68816, 32433, 886 Passed LTC: https://tests.stockfishchess.org/tests/view/65523858136acbc5735344f7 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 198954 W: 49250 L: 49211 D: 100493 Elo +0.07 Ptnml(0-2): 93, 22565, 54117, 22614, 88 closes https://github.com/official-stockfish/Stockfish/pull/4874 Bench: 1334248 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: Taras Vuk
Date: Wed Nov 15 19:32:59 2023 +0100 Timestamp: 1700073179 Introduce recapture extensions When in a PV-node this patch extends ttMove if it is a recapture and has a good history. Passed STC: LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 83840 W: 21560 L: 21166 D: 41114 Elo +1.63 Ptnml(0-2): 343, 9905, 21027, 10305, 340 https://tests.stockfishchess.org/tests/view/654f4b02136acbc5735308ab Passed LTC: LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 165318 W: 41068 L: 40476 D: 83774 Elo +1.24 Ptnml(0-2): 98, 18670, 44517, 19290, 84 https://tests.stockfishchess.org/tests/view/654fde04136acbc5735314e0 closes https://github.com/official-stockfish/Stockfish/pull/4872 Bench: 1393911 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: Linmiao Xu
Date: Sat Nov 11 15:26:56 2023 +0100 Timestamp: 1699712816 Simplify away optimism average score offset params Passed non-regression STC: https://tests.stockfishchess.org/tests/view/654abf6b136acbc57352ac4b LLR: 2.97 (-2.94,2.94) <-1.75,0.25> Total: 49664 W: 12687 L: 12477 D: 24500 Elo +1.47 Ptnml(0-2): 138, 5840, 12703, 5976, 175 Passed non-regression LTC: https://tests.stockfishchess.org/tests/view/654b638e136acbc57352b961 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 347166 W: 85561 L: 85676 D: 175929 Elo -0.12 Ptnml(0-2): 206, 39569, 94150, 39450, 208 closes https://github.com/official-stockfish/Stockfish/pull/4871 bench 1257641 see source |