| !! latest version !! 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: maximmasiutin
Date: Sat Feb 28 12:10:50 2026 +0100 Timestamp: 1772277050 Simplify attackers_to_exist function test based on #6586 by maximmasiutin https://tests.stockfishchess.org/tests/view/69977d58e2562aa5bc1e09c4 LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 225056 W: 58208 L: 58195 D: 108653 Elo +0.02 Ptnml(0-2): 677, 25001, 61196, 24940, 714 closes https://github.com/official-stockfish/Stockfish/pull/6633 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: anematode
Date: Sat Feb 28 12:07:38 2026 +0100 Timestamp: 1772276858 skip setting threatByLesser[KING] It doesn't make sense for a king to move to a square threatened by a lesser piece, since that move would be illegal. closes https://github.com/official-stockfish/Stockfish/pull/6640 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: mstembera
Date: Sat Feb 28 12:06:39 2026 +0100 Timestamp: 1772276799 Simplify threat by lesser STC https://tests.stockfishchess.org/tests/view/699da988eaae015cd278ede4 LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 141184 W: 36647 L: 36541 D: 67996 Elo +0.26 Ptnml(0-2): 511, 16620, 36237, 16700, 524 LTC https://tests.stockfishchess.org/tests/view/699f4bee2be03365d5073c71 LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 99852 W: 25463 L: 25322 D: 49067 Elo +0.49 Ptnml(0-2): 47, 10997, 27721, 11090, 71 Removes a constant and a branch(for the price of a subtract) and treats the from and to squares symmetrically. closes https://github.com/official-stockfish/Stockfish/pull/6637 bench: 2460547 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: ByteBuf
Date: Sat Feb 28 12:00:08 2026 +0100 Timestamp: 1772276408 CI: Fix typo in error message closes https://github.com/official-stockfish/Stockfish/pull/6624 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: Ryan Hirsch
Date: Sat Feb 28 11:58:49 2026 +0100 Timestamp: 1772276329 More NMP when improving Passed STC: LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 89472 W: 23291 L: 22895 D: 43286 Elo +1.54 Ptnml(0-2): 317, 10389, 22942, 10757, 331 https://tests.stockfishchess.org/tests/view/699f070c3ece4c464328a26f Passed LTC: LLR: 2.96 (-2.94,2.94) <0.50,2.50> Total: 95880 W: 24537 L: 24098 D: 47245 Elo +1.59 Ptnml(0-2): 55, 10259, 26880, 10684, 62 https://tests.stockfishchess.org/tests/view/699fb9be44b9136df1165ded closes https://github.com/official-stockfish/Stockfish/pull/6638 bench: 2534375 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: Robert Nurnberg
Date: Sat Feb 28 11:55:03 2026 +0100 Timestamp: 1772276103 prevent unproven mated-in scores in game play This PR removes the variable threads.abortedSearch introduced in #4990 and relies on threads.stop and completedDepth instead. The logic in master is only guaranteed to work in single threaded search. For multiple threads, as soon as threads.stop is set, some of the threads may abort their search, and so their mated-in scores are not reliable. Compared to master, this patch prevents unproven mated-in scores in these multi-threaded scenarios: in game play (when time management is used) when the uci commands quit or stop are received when maximum depth is reached for go mate commands The patch will change the bestmove in those very rare situations where the bug occurs in master. This is because bestmove is taken from rootMoves[0].pv[0], which will now no longer contain unproven mated-in PVs. In that sense the patch is "functional". But of course, it does not change bench. While at it, we also fix a bug in master that suppressed PV output for inexact mated-in scores on receiving threads.stop. In cases where uciScore < score with score not being a proven loss, and where the new bestmove was different from the last completed iteration, this led to a bestmove output that did not match the final PV (which was for an exact score). Fixes #6293. Fixes #6626. closes https://github.com/official-stockfish/Stockfish/pull/6636 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: sscg13
Date: Wed Feb 18 21:46:57 2026 +0100 Timestamp: 1771447617 Update NNUE architecture to SFNNv13 and net nn-5227780996d3.nnue Since the introduction of Threat Inputs in SFNNv10 and its refinements, the accumulator/L1 size has significantly decreased. This has made it more computationally favorable to double the L2 size from 16 to 32. Failed STC: LLR: -2.98 (-2.94,2.94) <0.00,2.00> Total: 189184 W: 49649 L: 49635 D: 89900 Elo +0.03 Ptnml(0-2): 881, 22479, 47812, 22585, 835 https://tests.stockfishchess.org/tests/view/69928ef7bfe62dc95a624d5c Passed LTC: LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 37902 W: 9833 L: 9509 D: 18560 Elo +2.97 Ptnml(0-2): 35, 4074, 10408, 4400, 34 https://tests.stockfishchess.org/tests/view/69937936ff782f8eeef611e3 Passed VLTC SMP: LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 20576 W: 5455 L: 5191 D: 9930 Elo +4.46 Ptnml(0-2): 6, 1837, 6338, 2101, 6 https://tests.stockfishchess.org/tests/view/6994df0586e4a32314116399 closes https://github.com/official-stockfish/Stockfish/pull/6619 bench: 2396996 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: Wed Feb 18 21:44:20 2026 +0100 Timestamp: 1771447460 Minor cleanups in bitboard.h closes https://github.com/official-stockfish/Stockfish/pull/6618 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: mstembera
Date: Wed Feb 18 21:40:01 2026 +0100 Timestamp: 1771447201 Don't process kings after #6609 https://github.com/official-stockfish/Stockfish/pull/6617 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: rn5f107s2
Date: Wed Feb 18 21:39:06 2026 +0100 Timestamp: 1771447146 Add en passant santization tests to the CI and pos is ok closes https://github.com/official-stockfish/Stockfish/pull/6615 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: Carlos Esparza
Date: Wed Feb 18 05:58:44 2026 +0100 Timestamp: 1771390724 speed up update_piece_threats after SFNNv12 with the removal of all king-related threats in SFNNv12 we can avoid some work in update_piece_threats STC for anematode's swan: https://tests.stockfishchess.org/tests/view/6986b920b0f3ca5200aaf80a LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 262880 W: 68379 L: 67747 D: 126754 Elo +0.84 Ptnml(0-2): 808, 29001, 71223, 29567, 841 STC of further speedups on top of swan: https://tests.stockfishchess.org/tests/view/698d7f8362a8f472da3a8a35 LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 65920 W: 17126 L: 16781 D: 32013 Elo +1.82 Ptnml(0-2): 186, 7084, 18105, 7369, 216 closes https://github.com/official-stockfish/Stockfish/pull/6614 No functional change Co-Authored-By: Timothy Herchen <> 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: FauziAkram
Date: Wed Feb 18 05:54:55 2026 +0100 Timestamp: 1771390495 VVLTC tune Passed VVLTC with stc bounds: LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 21424 W: 5638 L: 5387 D: 10399 Elo +4.07 Ptnml(0-2): 2, 1925, 6607, 2176, 2 https://tests.stockfishchess.org/tests/view/69938fbcff782f8eeef612a9 Passed VVLTC with ltc bounds: LLR: 2.96 (-2.94,2.94) <0.50,2.50> Total: 33410 W: 8784 L: 8499 D: 16127 Elo +2.96 Ptnml(0-2): 5, 2968, 10474, 3253, 5 https://tests.stockfishchess.org/tests/view/69923ea872254723ef22c6fa Verify Elo loss at STC: LLR: -2.93 (-2.94,2.94) <-1.75,0.25> Total: 17504 W: 4420 L: 4704 D: 8380 Elo -5.64 Ptnml(0-2): 56, 2259, 4420, 1947, 70 https://tests.stockfishchess.org/tests/view/69946e4186e4a3231411625b closes https://github.com/official-stockfish/Stockfish/pull/6616 bench: 3074962 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: Fri Feb 13 07:22:36 2026 +0100 Timestamp: 1770963756 Simplify probCutDepth term Passed STC LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 139392 W: 36003 L: 35897 D: 67492 Elo +0.26 Ptnml(0-2): 451, 16383, 35911, 16511, 440 https://tests.stockfishchess.org/tests/view/697ebb4d5f56030af97b5aa5 Passed LTC LLR: 2.97 (-2.94,2.94) <-1.75,0.25> Total: 266934 W: 67822 L: 67851 D: 131261 Elo -0.04 Ptnml(0-2): 175, 29579, 73955, 29616, 142 https://tests.stockfishchess.org/tests/view/6980e5a26362aee5c8a55398 closes https://github.com/official-stockfish/Stockfish/pull/6607 Bench: 2515956 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: Fri Feb 13 07:15:35 2026 +0100 Timestamp: 1770963335 Simplify malus formula Passed non-regression STC LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 51936 W: 13490 L: 13283 D: 25163 Elo +1.38 Ptnml(0-2): 161, 6128, 13184, 6333, 162 https://tests.stockfishchess.org/tests/view/698120e06362aee5c8a55412 Passed non-regression LTC LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 233772 W: 59502 L: 59499 D: 114771 Elo +0.00 Ptnml(0-2): 144, 25753, 65086, 25762, 141 https://tests.stockfishchess.org/tests/view/69827426889c3a4c31c8db52 closes https://github.com/official-stockfish/Stockfish/pull/6606 bench 2739355 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: Fri Feb 13 07:12:04 2026 +0100 Timestamp: 1770963124 Simplify malus decay formula Passed non-regression STC LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 93600 W: 24165 L: 24007 D: 45428 Elo +0.59 Ptnml(0-2): 325, 11021, 23958, 11163, 333 https://tests.stockfishchess.org/tests/view/698121d46362aee5c8a55414 Passed non-regression LTC LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 83232 W: 21236 L: 21077 D: 40919 Elo +0.66 Ptnml(0-2): 46, 9147, 23083, 9282, 58 https://tests.stockfishchess.org/tests/view/698336dc473df9d1d24a90e8 closes https://github.com/official-stockfish/Stockfish/pull/6600 Bench: 2666284 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: anematode
Date: Fri Feb 13 07:06:33 2026 +0100 Timestamp: 1770962793 avoid modify_and_replicate for first load We call modify_and_replicate in load_networks, but this is quite inefficient. closes https://github.com/official-stockfish/Stockfish/pull/6574 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: lemteay
Date: Fri Feb 13 07:03:17 2026 +0100 Timestamp: 1770962597 Add constexpr specifier back to conthist_bonuses Passed STC LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 60288 W: 15668 L: 15331 D: 29289 Elo +1.94 Ptnml(0-2): 159, 6490, 16532, 6781, 182 https://tests.stockfishchess.org/tests/view/698c835762a8f472da3a88e1 closes https://github.com/official-stockfish/Stockfish/pull/6611 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: Maxim Masiutin
Date: Fri Feb 13 07:01:15 2026 +0100 Timestamp: 1770962475 Prefetch threat weight rows during append_changed_indices Passed STC (first run): https://tests.stockfishchess.org/tests/view/698030ee6362aee5c8a552c7 LLR: 2.96 (-2.94,2.94) <0.00,2.00> Total: 120800 W: 31336 L: 30912 D: 58552 Elo +1.22 Ptnml(0-2): 330, 13084, 33172, 13460, 354 Passed LTC: https://tests.stockfishchess.org/tests/view/6983946d473df9d1d24a916d LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 86850 W: 22352 L: 21951 D: 42547 Elo +1.60 Ptnml(0-2): 45, 8506, 25934, 8883, 57 Passed STC SMP (after changes made after opening the PR): https://tests.stockfishchess.org/tests/view/6987b4c1b0f3ca5200aaf9da LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 84480 W: 21994 L: 21627 D: 40859 Elo +1.51 Ptnml(0-2): 98, 9378, 22932, 9723, 109 Passed STC (second run, as a sanity check made after changes made after opening the PR -- these changed, however, didn't change assembly code produced by the compiler): https://tests.stockfishchess.org/tests/view/6987ad21b0f3ca5200aaf9c9 LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 132192 W: 34526 L: 34083 D: 63583 Elo +1.16 Ptnml(0-2): 421, 14511, 35759, 15014, 391 GCC maps __builtin_prefetch locality=1 to PREFETCHT2 instruction, targeting L2 cache. To make things clear, added template-based approach as suggested by Disservin. PREFETCHT2 should be the appropriate choice for the 78 MB threat weight table: avoids L1d pollution, parks data in L2 where it is promoted to L1d on actual load. With 200-500 cycle lead time from make_index, data has time to arrive in L2. suggestions by Disservin and anematode included closes https://github.com/official-stockfish/Stockfish/pull/6602 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: Joost VandeVondele
Date: Fri Feb 13 06:57:08 2026 +0100 Timestamp: 1770962228 Introduce timeout for wget/curl in net download ensures the download terminates after 5min, even if the server stalled. closes https://github.com/official-stockfish/Stockfish/pull/6608 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: sscg13
Date: Fri Feb 13 06:56:10 2026 +0100 Timestamp: 1770962170 Update NNUE architecture to SFNNv12 and net nn-7e1657811c6d.nnue This net is trained with https://github.com/sscg13/nettest/blob/no-king-attacker/threats.yaml. Passed non-regression STC: LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 92640 W: 24371 L: 24209 D: 44060 Elo +0.61 Ptnml(0-2): 389, 11047, 23322, 11137, 425 https://tests.stockfishchess.org/tests/view/6986345fa259e26d2c32e9c5 Passed non-regression LTC: LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 198636 W: 50960 L: 50919 D: 96757 Elo +0.07 Ptnml(0-2): 176, 22218, 54511, 22215, 198 https://tests.stockfishchess.org/tests/view/6987ee29b0f3ca5200aafa51 closes https://github.com/official-stockfish/Stockfish/pull/6609 bench: 2465828 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: Sun Feb 8 15:22:29 2026 +0100 Timestamp: 1770560549 Simplify away main history default Passed non-regression STC LLR: 2.97 (-2.94,2.94) <-1.75,0.25> Total: 130752 W: 33725 L: 33605 D: 63422 Elo +0.32 Ptnml(0-2): 421, 15472, 33460, 15612, 411 https://tests.stockfishchess.org/tests/view/697eb9e35f56030af97b5a9e Passed non-regression LTC LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 53352 W: 13697 L: 13509 D: 26146 Elo +1.22 Ptnml(0-2): 36, 5804, 14811, 5986, 39 https://tests.stockfishchess.org/tests/view/6980e5846362aee5c8a55396 closes https://github.com/official-stockfish/Stockfish/pull/6590 Bench: 2375860 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: Dieter Dobbelaere
Date: Sun Feb 8 15:22:21 2026 +0100 Timestamp: 1770560541 Replace FNV-1a hash by faster and better MurmurHash64A. Replace FNV-1a hash algorithm by public domain MurmurHash64A, by Austin Appleby, which is faster and has better hash properties. This is also the default hash algorithm of GNU C++ Standard Library. Startup time on a given system (with x86-64-avx2 binaries) reduces from 378ms to 332ms (46ms faster). Hashing of the largest data input (46.1MB) goes from 44.2ms to 6.2ms, so about 7x faster. No functional change closes https://github.com/official-stockfish/Stockfish/pull/6579 Bench: 2570943 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: lemteay
Date: Sun Feb 8 15:22:06 2026 +0100 Timestamp: 1770560526 Raise inline threshold for clang/llvm Passed STC: https://tests.stockfishchess.org/tests/view/696884a56d118e46e1731473 LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 29952 W: 7843 L: 7549 D: 14560 Elo +3.41 Ptnml(0-2): 72, 3215, 8118, 3489, 82 .text area size: ``` master(eb5a65a): 455490 pr: 453250 ``` Bench (clang 21.1.8): ``` Result of 100 runs ================== base (...kfish-master) = 1719708 +/- 3473 test (./stockfish ) = 1770555 +/- 3284 diff = +50846 +/- 3949 speedup = +0.0296 P(speedup > 0) = 1.0000 CPU: 16 x AMD Ryzen 9 7945HX with Radeon Graphics Hyperthreading: on ``` closes https://github.com/official-stockfish/Stockfish/pull/6550 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: Sun Feb 8 15:22:06 2026 +0100 Timestamp: 1770560526 Simplify Triple Margin Formula Passed STC: LLR: 3.01 (-2.94,2.94) <-1.75,0.25> Total: 517472 W: 133271 L: 133575 D: 250626 Elo -0.20 Ptnml(0-2): 1628, 61366, 133032, 61102, 1608 https://tests.stockfishchess.org/tests/view/69590175d844c1ce7cc7e9a2 Passed LTC: LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 95430 W: 24242 L: 24098 D: 47090 Elo +0.52 Ptnml(0-2): 42, 10289, 26926, 10399, 59 https://tests.stockfishchess.org/tests/view/695f7f03ca95f52e4b85253c Passed VVLTC: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 58828 W: 15299 L: 15135 D: 28394 Elo +0.97 Ptnml(0-2): 4, 5277, 18687, 5443, 3 https://tests.stockfishchess.org/tests/view/6961686c8709a8d27c0383f6 closes https://github.com/official-stockfish/Stockfish/pull/6546 Bench: 2570943 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: Jakub Ciolek
Date: Sun Feb 8 15:22:06 2026 +0100 Timestamp: 1770560526 Remove prefetching in Position::do_null_move Passed non-regression STC, Hash=16: LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 60704 W: 15709 L: 15522 D: 29473 Elo +1.07 Ptnml(0-2): 169, 6589, 16649, 6776, 169 https://tests.stockfishchess.org/tests/view/6963d381f6d2e8deff76918f Passed non-regression STC SMP, Hash=512: LLR: 2.95 (-2.94,2.94) <-1.75,0.25> Total: 313512 W: 80151 L: 80231 D: 153130 Elo -0.09 Ptnml(0-2): 376, 35492, 85111, 35390, 387 https://tests.stockfishchess.org/tests/view/696e1684e5a70879bd3fe38f closes https://github.com/official-stockfish/Stockfish/pull/6545 No functional change see source |