| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: protonspring
Date: Thu May 14 20:47:59 2020 +0200 Timestamp: 1589482079 Simplify Time Management This is a functional simplification of the time management system. With this patch, there is a simple equation for each of two distinct time controls: basetime + increment, and x moves in y seconds (+increment). These equations are easy to plot and understand making future modifications or adding additional time controls much easier. SlowMover is reset to 100 so that is has no effect unless a user changes it. There are two scaling variables: * Opt_scale is a scale factor (or percentage) of time to use for this current move. * Max_scale is a scale factor to apply to the resulting optimumTime. There seems to be some elo gain in most scenarios. Better performance is attributable to one of two things: * minThinkingTime was not allowing reasonable time calculations for very short games like 10+0 or 10+0.01. This is because adding almost no increment and substracting move overhead for 50 moves quickly results in almost 0 time very early in the game. Master depended on minThinkingTime to handle these short games instead of good time management. This patch addresses this issue by lowering minThinkingTime to 0 and adjusting moverOverhead if there are very low increments. * Notice that the time distribution curves tail downward for the first 10 moves or so. This causes less time to attribute for very early moves leaving more time available for middle moves where more important decisions happen. Here is a summary of tests for this version at different time controls: SMP 5+0.05 LLR: 2.97 (-2.94,2.94) {-1.50,0.50} Total: 46544 W: 7175 L: 7089 D: 32280 Elo +0.64 Ptnml(0-2): 508, 4826, 12517, 4914, 507 https://tests.stockfishchess.org/tests/user/protonspring STC LLR: 2.94 (-2.94,2.94) {-1.50,0.50} Total: 20480 W: 3872 L: 3718 D: 12890 Elo +2.61 Ptnml(0-2): 295, 2364, 4824, 2406, 351 https://tests.stockfishchess.org/tests/view/5ebc343e7dd5693aad4e6873 STC, sudden death LLR: 2.93 (-2.94,2.94) {-1.50,0.50} Total: 7024 W: 1706 L: 1489 D: 3829 Elo +10.74 Ptnml(0-2): 149, 813, 1417, 938, 195 https://tests.stockfishchess.org/tests/view/5ebc346f7dd5693aad4e6875 STC, TCEC style LLR: 2.95 (-2.94,2.94) {-1.50,0.50} Total: 4192 W: 1014 L: 811 D: 2367 Elo +16.84 Ptnml(0-2): 66, 446, 912, 563, 109 https://tests.stockfishchess.org/tests/view/5ebc34857dd5693aad4e6877 40/10 LLR: 2.93 (-2.94,2.94) {-1.50,0.50} Total: 54032 W: 10592 L: 10480 D: 32960 Elo +0.72 Ptnml(0-2): 967, 6148, 12677, 6254, 970 https://tests.stockfishchess.org/tests/view/5ebc50597dd5693aad4e688d LTC, sudden death LLR: 2.95 (-2.94,2.94) {-1.50,0.50} Total: 9152 W: 1391 L: 1263 D: 6498 Elo +4.86 Ptnml(0-2): 75, 888, 2526, 1008, 79 https://tests.stockfishchess.org/tests/view/5ebc6f5c7dd5693aad4e689b LTC LLR: 2.98 (-2.94,2.94) {-1.50,0.50} Total: 12344 W: 1563 L: 1459 D: 9322 Elo +2.93 Ptnml(0-2): 70, 1103, 3740, 1171, 88 https://tests.stockfishchess.org/tests/view/5ebc6f4c7dd5693aad4e6899 closes https://github.com/official-stockfish/Stockfish/pull/2678 Bench: 4395562 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: Sami Kiminki
Date: Thu May 14 20:35:40 2020 +0200 Timestamp: 1589481340 Fix a Windows-only crash on exit without 'quit' There was a bug in commit d4763424d2728fe2dfd0a6fe747666feb6a2fdbb (Add support for Windows large pages) that could result in trying to free memory allocated with VirtualAlloc incorrectly with free(). Fix this by reverting the TT.resize(0) logic in the previous commit, and instead, just call aligned_ttmem_free() in TranspositionTable::~TranspositionTable(). fixes https://github.com/official-stockfish/Stockfish/issues/2677 closes https://github.com/official-stockfish/Stockfish/pull/2679 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: Stéphane Nicolet
Date: Thu May 14 20:34:15 2020 +0200 Timestamp: 1589481255 Move 50 moves counter to initiative. simplify the usage of the 50 moves counter, moving it frome the scale factor to initiative. This patch was inspired by recent games where a blocked or semi-blocked position was 'blundered', by moving a pawn, into a lost endgame. This patch improves this situation, finding a more robust move more often. for example (1s searches with many threads): ``` FEN 8/p3kp2/Pp2p3/1n2PpP1/5P2/1Kp5/8/R7 b - - 68 143 master: 6 bestmove b5c7 6 bestmove e7e8 12 bestmove e7d8 176 bestmove e7d7 patch: 3 bestmove b5c7 5 bestmove e7d8 192 bestmove e7d7 ``` fixes https://github.com/official-stockfish/Stockfish/issues/2620 the patch also tests well passed STC LLR: 2.94 (-2.94,2.94) {-1.50,0.50} Total: 50168 W: 9508 L: 9392 D: 31268 Elo +0.80 Ptnml(0-2): 818, 5873, 11616, 5929, 848 https://tests.stockfishchess.org/tests/view/5ebb07287dd5693aad4e680b passed LTC LLR: 2.93 (-2.94,2.94) {-1.50,0.50} Total: 7520 W: 981 L: 870 D: 5669 Elo +5.13 Ptnml(0-2): 49, 647, 2256, 760, 48 https://tests.stockfishchess.org/tests/view/5ebbff747dd5693aad4e6858 closes https://github.com/official-stockfish/Stockfish/pull/2666 Bench: 4395562 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: Sami Kiminki
Date: Wed May 13 20:57:47 2020 +0200 Timestamp: 1589396267 Add support for Windows large pages for users that set the needed privilige "Lock Pages in Memory" large pages will be automatically enabled (see Readme.md). This expert setting might improve speed, 5% - 30%, depending on the hardware, the number of threads and hash size. More for large hashes, large number of threads and NUMA. If the operating system can not allocate large pages (easier after a reboot), default allocation is used automatically. The engine log provides details. closes https://github.com/official-stockfish/Stockfish/pull/2656 fixes https://github.com/official-stockfish/Stockfish/issues/2619 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: Tomasz Sobczyk
Date: Wed May 13 19:50:30 2020 +0200 Timestamp: 1589392230 Use a trivially copyable struct for TBTables::Entry instead of a tuple. fixes https://github.com/official-stockfish/Stockfish/issues/2673 which is a warning issued by recent gcc (10.1) closes https://github.com/official-stockfish/Stockfish/pull/2674 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: Moez Jellouli
Date: Mon May 11 20:46:39 2020 +0200 Timestamp: 1589222799 Tune pawn value Small tune of PawnValue parameters -4 / -7 with "closedpos.epd" opening book. STC: LLR: 2.96 (-2.94,2.94) {-0.50,1.50} Total: 58776 W: 11787 L: 11511 D: 35478 Elo +1.63 Ptnml(0-2): 975, 6876, 13443, 7086, 1008 https://tests.stockfishchess.org/tests/view/5eb5aa712326444a3b6d3e33 LTC: LLR: 2.98 (-2.94,2.94) {0.25,1.75} Total: 137544 W: 19687 L: 19115 D: 98742 Elo +1.44 Ptnml(0-2): 988, 13219, 39901, 13561, 1103 https://tests.stockfishchess.org/tests/view/5eb67a392326444a3b6d3e9a Non regression STC with "noob_3moves.epd" opening book LLR: 2.94 (-2.94,2.94) {-1.50,0.50} Total: 98168 W: 18545 L: 18499 D: 61124 Elo +0.16 Ptnml(0-2): 1647, 11396, 22951, 11444, 1646 https://tests.stockfishchess.org/tests/view/5eb7e489e0300e8e8c896203 closes https://github.com/official-stockfish/Stockfish/pull/2670 Bench 4696646 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: Joost VandeVondele
Date: Mon May 11 20:41:49 2020 +0200 Timestamp: 1589222509 Use posix_memalign instead of aligned_alloc should be a little more portable to older linux systems (before glibc-2.16). fixes https://github.com/official-stockfish/Stockfish/issues/2665 closes https://github.com/official-stockfish/Stockfish/pull/2668 No functional change. see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: xoto10
Date: Sat May 9 09:39:52 2020 +0200 Timestamp: 1589009992 Fix syzygy dependencies issue fixes https://github.com/official-stockfish/Stockfish/issues/2660 The problem was caused by .depend being created with a rule for tbprobe.o not for syzygy/tbprobe.o. This patch keeps an explicit list of sources (SRCS), generates OBJS, and compiles all object files to the src/ directory, consistent with .depend. VPATH is used to search the syzygy directory as needed. joint work with @gvreuls closes https://github.com/official-stockfish/Stockfish/pull/2664 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: xoto10
Date: Wed May 6 16:20:01 2020 +0200 Timestamp: 1588774801 Penalty for all enemy pawns xrayed by our bishop. STC: LLR: 2.93 (-2.94,2.94) {-0.50,1.50} Total: 159760 W: 30229 L: 29813 D: 99718 Elo +0.90 Ptnml(0-2): 2659, 18309, 37534, 18713, 2665 https://tests.stockfishchess.org/tests/view/5eb1d5032326444a3b6d33ce LTC: LLR: 2.93 (-2.94,2.94) {0.25,1.75} Total: 26496 W: 3908 L: 3656 D: 18932 Elo +3.30 Ptnml(0-2): 192, 2512, 7610, 2720, 214 https://tests.stockfishchess.org/tests/view/5eb1e2dd2326444a3b6d33f9 closes https://github.com/official-stockfish/Stockfish/pull/2662 Bench 5185517 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: Marco Costalba
Date: Sat May 2 17:32:11 2020 +0200 Timestamp: 1588433531 Fishtest Tuning Framework The purpose of the code is to allow developers to easily and flexibly setup SF for a tuning session. Mainly you have just to remove 'const' qualifiers from the variables you want to tune and flag them for tuning, so if you have: int myKing = 10; Score myBonus = S(5, 15); Value myValue[][2] = { { V(100), V(20) }, { V(7), V(78) } }; and at the end of the update you may want to call a post update function: void my_post_update(); If instead of default Option's min-max values, you prefer your custom ones, returned by: std::pair<int, int> my_range(int value) Or you jus want to set the range directly, you can simply add below: TUNE(SetRange(my_range), myKing, SetRange(-200, 200), myBonus, myValue, my_post_update); And all the magic happens :-) At startup all the parameters are printed in a format suitable to be copy-pasted in fishtest. In case the post update function is slow and you have many parameters to tune, you can add: UPDATE_ON_LAST(); And the values update, including post update function call, will be done only once, after the engine receives the last UCI option. The last option is the one defined and created as the last one, so this assumes that the GUI sends the options in the same order in which have been defined. closes https://github.com/official-stockfish/Stockfish/pull/2654 No functional change. see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: Vizvezdenec
Date: Sat May 2 17:30:22 2020 +0200 Timestamp: 1588433422 Refine scale factor of opposite colored bishops endgames. This patch makes it dependant on the count of passed pawns of the strong side instead of 22/64 in every case. passed STC https://tests.stockfishchess.org/tests/view/5ead60966ffeed51f6e32591 LLR: 2.96 (-2.94,2.94) {-0.50,1.50} Total: 50336 W: 9473 L: 9241 D: 31622 Elo +1.60 Ptnml(0-2): 570, 5371, 13098, 5515, 614 passed LTC https://tests.stockfishchess.org/tests/view/5ead6d3b6ffeed51f6e325b0 LLR: 2.94 (-2.94,2.94) {0.25,1.75} Total: 21952 W: 2810 L: 2603 D: 16539 Elo +3.28 Ptnml(0-2): 101, 1791, 7005, 1958, 121 closes https://github.com/official-stockfish/Stockfish/pull/2658 bench 4247490 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: Linmiao Xu
Date: Sat May 2 17:26:51 2020 +0200 Timestamp: 1588433211 Tuned safe checks and minor piece king protectors A combination of terms related to king safety one tuned safe check weights, the other tuned knight and bishop king protector weights separately with some compensation in the high outpost bonuses given to the minor pieces. passed STC LLR: 2.95 (-2.94,2.94) {-0.50,1.50} Total: 39892 W: 7594 L: 7350 D: 24948 Elo +2.13 Ptnml(0-2): 643, 4559, 9314, 4771, 659 https://tests.stockfishchess.org/tests/view/5ea49635b908f6dd28f34b82 passed LTC LLR: 2.94 (-2.94,2.94) {0.25,1.75} Total: 104934 W: 13300 L: 12834 D: 78800 Elo +1.54 Ptnml(0-2): 697, 9571, 31514, 9939, 746 https://tests.stockfishchess.org/tests/view/5ea4abf6b908f6dd28f34bcb closes https://github.com/official-stockfish/Stockfish/pull/2649 Bench 4800754 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: Joost VandeVondele
Date: Wed Apr 29 17:44:24 2020 +0200 Timestamp: 1588175064 Small cleanups closes https://github.com/official-stockfish/Stockfish/pull/2628 No functional change see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: Vizvezdenec
Date: Wed Apr 29 17:35:48 2020 +0200 Timestamp: 1588174548 Introduce futility pruning for captures The idea is somewhat similar to futility pruning for quiet moves - if a late enough capture doesn't give check and the static eval is much lower than alpha we can almost safely assume that this capture wouldn't be a good move. passed STC https://tests.stockfishchess.org/tests/view/5ea8544b53a4548a0348ee5b LLR: 2.95 (-2.94,2.94) {-0.50,1.50} Total: 236040 W: 44420 L: 43894 D: 147726 Elo +0.77 Ptnml(0-2): 3830, 27202, 55496, 27596, 3896 passed LTC https://tests.stockfishchess.org/tests/view/5ea87c842141237a731f0c7d LLR: 2.95 (-2.94,2.94) {0.25,1.75} Total: 81336 W: 10429 L: 10028 D: 60879 Elo +1.71 Ptnml(0-2): 589, 7356, 24404, 7703, 616 closes https://github.com/official-stockfish/Stockfish/pull/2651 bench 4405247 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: pb00067
Date: Wed Apr 22 08:48:01 2020 +0200 Timestamp: 1587538081 continuation histories when in check If in check, don't write to continuation histories ss-4, ss-6. Adding inCheck to the stack was needed, and might be useful for future patches. Passed STC: https://tests.stockfishchess.org/tests/view/5e9ee24acaaff5d60a50b812 LLR: 2.94 (-2.94,2.94) {-0.50,1.50} Total: 61774 W: 11725 L: 11449 D: 38600 Elo +1.55 Ptnml(0-2): 971, 7211, 14322, 7337, 1046 Passed LTC: https://tests.stockfishchess.org/tests/view/5e9eecb7caaff5d60a50b831 LLR: 2.94 (-2.94,2.94) {0.25,1.75} Total: 250822 W: 32067 L: 31179 D: 187576 Elo +1.23 Ptnml(0-2): 1745, 23126, 74824, 23928, 1788 closes https://github.com/official-stockfish/Stockfish/pull/2645 bench: 4808463 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: Vizvezdenec
Date: Sat Apr 18 15:36:41 2020 +0200 Timestamp: 1587217001 Apply multicut pruning more often This patch increases number of nodes where we produce multicut cutoffs. The idea is that if our ttMove failed to produce a singular extension but ttValue is greater than beta we can afford to do one more reduced search near beta excluding ttMove to see if it will produce a fail high - and if it does so produce muticut by analogy to existing logic. passed STC https://tests.stockfishchess.org/tests/view/5e9a162b5b664cdba0ce6e28 LLR: 2.94 (-2.94,2.94) {-0.50,1.50} Total: 58238 W: 11192 L: 10917 D: 36129 Elo +1.64 Ptnml(0-2): 1007, 6704, 13442, 6939, 1027 passed LTC https://tests.stockfishchess.org/tests/view/5e9a1e845b664cdba0ce7411 LLR: 2.94 (-2.94,2.94) {0.25,1.75} Total: 137852 W: 17460 L: 16899 D: 103493 Elo +1.41 Ptnml(0-2): 916, 12610, 41383, 13031, 986 closes https://github.com/official-stockfish/Stockfish/pull/2640 bench 4881443 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: protonspring
Date: Sat Apr 18 15:29:24 2020 +0200 Timestamp: 1587216564 Simplify minPawnDistance This is a functional simplification which fixes an awkward numerical cliff. With master king_safety, no pawns is scored higher than pawn(s) that is/are far from the king. This may motivate SF to throw away pawns to increase king safety. With this patch, there is a consistent value for minPawnDistance where losing a pawn never increases king safety. STC LLR: 2.94 (-2.94,2.94) {-1.50,0.50} Total: 45548 W: 8624 L: 8525 D: 28399 Elo +0.76 Ptnml(0-2): 592, 4937, 11587, 5096, 562 https://tests.stockfishchess.org/tests/view/5e98ced630be947a14e9ddc5 LTC LLR: 2.94 (-2.94,2.94) {-1.50,0.50} Total: 42084 W: 5292 L: 5242 D: 31550 Elo +0.41 Ptnml(0-2): 193, 3703, 13252, 3649, 245 https://tests.stockfishchess.org/tests/view/5e98e22e30be947a14e9de07 closes https://github.com/official-stockfish/Stockfish/pull/2639 bench 4600292 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: Joost VandeVondele
Date: Thu Apr 16 21:44:52 2020 +0200 Timestamp: 1587066292 Remove one condition in probcut TTmove skipping the removed condition appears illogical and is not needed. passed STC: LLR: 2.95 (-2.94,2.94) {-1.50,0.50} Total: 80418 W: 15217 L: 15144 D: 50057 Elo +0.32 Ptnml(0-2): 1341, 9399, 18679, 9426, 1364 https://tests.stockfishchess.org/tests/view/5e977eb5c9ada107a0370d6b passed LTC: LLR: 2.95 (-2.94,2.94) {-1.50,0.50} Total: 49878 W: 6299 L: 6247 D: 37332 Elo +0.36 Ptnml(0-2): 327, 4677, 14897, 4693, 345 https://tests.stockfishchess.org/tests/view/5e97e07dc9ada107a0370e53 closes https://github.com/official-stockfish/Stockfish/pull/2638 Bench: 4958027 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: xoto10
Date: Thu Apr 16 21:40:06 2020 +0200 Timestamp: 1587066006 Scale factor in opposite-color bishop endings This change varies the scale factor with the total number of pieces and pawns on the strongSide. STC : LLR: 2.94 (-2.94,2.94) {-0.50,1.50} Total: 150920 W: 28828 L: 28422 D: 93670 Elo +0.93 Ptnml(0-2): 2507, 17548, 35030, 17782, 2593 https://tests.stockfishchess.org/tests/view/5e983eb2c00499c5410f4951 LTC : LLR: 2.95 (-2.94,2.94) {0.25,1.75} Total: 69238 W: 8810 L: 8446 D: 51982 Elo +1.83 Ptnml(0-2): 451, 6276, 20879, 6484, 529 https://tests.stockfishchess.org/tests/view/5e985b27c00499c5410f4987 closes https://github.com/official-stockfish/Stockfish/pull/2637 Bench 4821332 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: Lolligerhans
Date: Thu Apr 16 21:36:19 2020 +0200 Timestamp: 1587065779 Increase safe check bonus if multiple safe checks Add 50% "safe checks" bonus when there are multiple safe checks from the same piece type. LTC LLR: 2.97 (-2.94,2.94) {0.25,1.75} Total: 128184 W: 16491 L: 15954 D: 95739 Elo +1.46 Ptnml(0-2): 884, 11793, 38267, 12198, 950 https://tests.stockfishchess.org/tests/view/5e97d1b6c9ada107a0370e03 STC LLR: 2.94 (-2.94,2.94) {-0.50,1.50} Total: 19022 W: 3733 L: 3514 D: 11775 Elo +4.00 Ptnml(0-2): 338, 2103, 4414, 2314, 342 https://tests.stockfishchess.org/tests/view/5e97c377c9ada107a0370ddf closes https://github.com/official-stockfish/Stockfish/pull/2636 Bench: 5057329 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: FauziAkram
Date: Thu Apr 16 21:32:26 2020 +0200 Timestamp: 1587065546 Queen and Rook Tuning Tuning for multiple parameters for Queen and Rook. passed STC LLR: 2.94 (-2.94,2.94) {-0.50,1.50} Total: 62790 W: 12033 L: 11754 D: 39003 Elo +1.54 Ptnml(0-2): 1058, 7186, 14666, 7389, 1096 https://tests.stockfishchess.org/tests/view/5e978c66c9ada107a0370d87 passed LTC LLR: 2.95 (-2.94,2.94) {0.25,1.75} Total: 89780 W: 11460 L: 11036 D: 67284 Elo +1.64 Ptnml(0-2): 624, 8151, 26951, 8505, 659 https://tests.stockfishchess.org/tests/view/5e979aaec9ada107a0370d93 closes https://github.com/official-stockfish/Stockfish/pull/2634 Bench: 5111578 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: Vizvezdenec
Date: Wed Apr 15 20:33:03 2020 +0200 Timestamp: 1586975583 Don't attempt probcut if ttMove is not good enough. This idea is loosely based on xoroshiro idea about raisedBeta and ttmoves. If our ttmove have low enough ttvalue and is deep enough (deeper than our probcut depth) it makes little sense to try probcut moves, since the ttMove already more or less failed to produce one according to transposition table. passed STC https://tests.stockfishchess.org/tests/view/5e9673ddc2718dee3c822920 LLR: 2.95 (-2.94,2.94) {-0.50,1.50} Total: 72148 W: 14038 L: 13741 D: 44369 Elo +1.43 Ptnml(0-2): 1274, 8326, 16615, 8547, 1312 passed LTC https://tests.stockfishchess.org/tests/view/5e96b378c2718dee3c8229bf LLR: 2.94 (-2.94,2.94) {0.25,1.75} Total: 89054 W: 11418 L: 10996 D: 66640 Elo +1.65 Ptnml(0-2): 623, 8113, 26643, 8515, 633 closes https://github.com/official-stockfish/Stockfish/pull/2632 bench 4952731 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: Vizvezdenec
Date: Wed Apr 15 08:29:20 2020 +0200 Timestamp: 1586932160 Space bonus and number of blocked pawns This patch refines the recently introduced interaction between the space bonus and the number of blocked pawns in a position. * pawns count as blocked also if their push square is attacked by 2 enemy pawns; * overall dependence is stronger as well as offset; * bonus increase is capped at 9 blocked pawns in position; passed STC https://tests.stockfishchess.org/tests/view/5e94560663d105aebbab243d LLR: 2.96 (-2.94,2.94) {-0.50,1.50} Total: 29500 W: 5842 L: 5603 D: 18055 Elo +2.81 Ptnml(0-2): 504, 3443, 6677, 3562, 564 passed LTC https://tests.stockfishchess.org/tests/view/5e95b383c2aaa99f75d1a14d LLR: 2.95 (-2.94,2.94) {0.25,1.75} Total: 63504 W: 8329 L: 7974 D: 47201 Elo +1.94 Ptnml(0-2): 492, 5848, 18720, 6197, 495 closes https://github.com/official-stockfish/Stockfish/pull/2631 bench 4956028 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: Stefan Geschwentner
Date: Tue Apr 14 08:01:53 2020 +0200 Timestamp: 1586844113 less bonus for blocked connected pawn Use less bonus for blocked connected pawns so closed positions are less worth. STC: LLR: 2.96 (-2.94,2.94) {-0.50,1.50} Total: 60004 W: 11904 L: 11619 D: 36481 Elo +1.65 Ptnml(0-2): 1066, 7083, 13535, 7136, 1182 https://tests.stockfishchess.org/tests/view/5e941a8063d105aebbab23e3 LTC: LLR: 2.95 (-2.94,2.94) {0.25,1.75} Total: 36606 W: 4831 L: 4556 D: 27219 Elo +2.61 Ptnml(0-2): 252, 3353, 10872, 3520, 306 https://tests.stockfishchess.org/tests/view/5e9444b963d105aebbab2427 closes https://github.com/official-stockfish/Stockfish/pull/2629 Bench: 4961260 see source |
| Windows x64 for Haswell CPUs Windows x64 for modern computers Windows x64 Windows 32 Linux x64 for Haswell CPUs Linux x64 for modern computers Linux x64 | Author: silversolver1
Date: Mon Apr 13 09:20:53 2020 +0200 Timestamp: 1586762453 Removes evasionPrunable STC: LLR: 2.95 (-2.94,2.94) {-1.50,0.50} Total: 25656 W: 4979 L: 4826 D: 15851 Elo +2.07 Ptnml(0-2): 414, 2971, 5964, 3006, 473 https://tests.stockfishchess.org/tests/view/5e93dbd72cb65b3059c33819 LTC: LLR: 2.94 (-2.94,2.94) {-1.50,0.50} Total: 43732 W: 5656 L: 5593 D: 32483 Elo +0.50 Ptnml(0-2): 324, 4072, 13009, 4139, 322 https://tests.stockfishchess.org/tests/view/5e93e37c2cb65b3059c33825 closes https://github.com/official-stockfish/Stockfish/pull/2627 Bench: 4702195 see source |