| 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: Niklas Fiekas
Date: Wed Jun 24 21:59:57 2020 +0200 Timestamp: 1593028797 Support ARCH=armv8 in Makefile (#2355) Tested with bench run after compiling with - g++ (Debian 6.3.0-18+deb9u1) 6.3.0 20170516 - clang version 3.8.1-24 on ThunderX CN8890. closes https://github.com/official-stockfish/Stockfish/pull/2760 fixes https://github.com/official-stockfish/Stockfish/issues/2355 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 Jun 24 21:56:11 2020 +0200 Timestamp: 1593028571 Do less futility pruning for captures. The idea of this patch is that if capture can be described as "less valuable piece takes more valuable piece" it's not really correct to add only piece value of captured piece to static evaluation since there can be more threats in other places and opponent can't really do much but recapture our capturing piece which leaves us space for more captures thus winning more material and increasing static eval. passed STC https://tests.stockfishchess.org/tests/view/5ef0167b122d6514328d760f LLR: 2.96 (-2.94,2.94) {-0.50,1.50} Total: 24736 W: 4838 L: 4607 D: 15291 Elo +3.24 Ptnml(0-2): 438, 2812, 5648, 3021, 449 passed LTC https://tests.stockfishchess.org/tests/view/5ef073bc122d6514328d7693 LLR: 2.93 (-2.94,2.94) {0.25,1.75} Total: 46152 W: 5865 L: 5567 D: 34720 Elo +2.24 Ptnml(0-2): 312, 4160, 13886, 4354, 364 closes https://github.com/official-stockfish/Stockfish/pull/2761 bench 4789930 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: Mon Jun 22 12:47:14 2020 +0200 Timestamp: 1592822834 Introduce bonus for queen infiltration Idea is that queen feels much better when it can't be kicked away now or later by pawn moves, especially in endgame. Special thanks to Linmiao Xu for the original idea of this patch. passed STC: LLR: 2.94 (-2.94,2.94) {-0.50,1.50} Total: 84008 W: 16271 L: 15958 D: 51779 Elo +1.29 Ptnml(0-2): 1476, 9688, 19420, 9887, 1533 https://tests.stockfishchess.org/tests/view/5eee7ca0447c5b640047a439 passed LTC: LLR: 2.95 (-2.94,2.94) {0.25,1.75} Total: 11720 W: 1522 L: 1328 D: 8870 Elo +5.75 Ptnml(0-2): 52, 1021, 3574, 1107, 106 https://tests.stockfishchess.org/tests/view/5eefc588122d6514328d75f9 closes https://github.com/official-stockfish/Stockfish/pull/2759 Bench: 4471740 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: Sun Jun 21 15:39:00 2020 +0200 Timestamp: 1592746740 Make endgames consistent Changes variable names and occasionally consolidated variable declarations. Piece squares are consistently prefixed with "weak" or "strong." passed STC LLR: 2.94 (-2.94,2.94) {-1.50,0.50} Total: 29008 W: 5532 L: 5416 D: 18060 Elo +1.39 Ptnml(0-2): 355, 2983, 7723, 3077, 366 https://tests.stockfishchess.org/tests/view/5eea88d3563bc7aa75600689 closes https://github.com/official-stockfish/Stockfish/pull/2752 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: Joost VandeVondele
Date: Sun Jun 21 15:22:20 2020 +0200 Timestamp: 1592745740 small cleanups closes https://github.com/official-stockfish/Stockfish/pull/2695 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 Jun 17 07:41:59 2020 +0200 Timestamp: 1592372519 More reduction for evading pawn moves. pawn moves are irreversable unlike other evading moves; pawn is the least valuable piece in the game. So it makes a lot of sence to assume that evading pawn moves are on average not as good as other evading moves thus can be reduced more. Passed STC https://tests.stockfishchess.org/tests/view/5ee9602e563bc7aa756002dc LLR: 2.95 (-2.94,2.94) {-0.50,1.50} Total: 94176 W: 17993 L: 17668 D: 58515 Elo +1.20 Ptnml(0-2): 1634, 10742, 21989, 11111, 1612 Passed LTC https://tests.stockfishchess.org/tests/view/5ee97342563bc7aa75600301 LLR: 2.94 (-2.94,2.94) {0.25,1.75} Total: 20432 W: 2572 L: 2354 D: 15506 Elo +3.71 Ptnml(0-2): 146, 1707, 6280, 1949, 134 closes https://github.com/official-stockfish/Stockfish/pull/2749 Bench: 5073064 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: Wed Jun 17 07:35:58 2020 +0200 Timestamp: 1592372158 Small bonus to favor thorn pawns We increase a little bit the midgame value of pawns on a4, h4, a6 and h6. Original idea by Malcolm Campbell, who tried the version restricted to the pawns on the H column a couple of weeks ago and got a patch which almost passed LTC. The current pull request just adds the same idea for pawns on the A column. Possible follow-ups: maybe tweak the a5/h5 pawn values, and/or add a malus for very low king mobility in midgame? STC: LLR: 2.94 (-2.94,2.94) {-0.50,1.50} Total: 33416 W: 6516 L: 6275 D: 20625 Elo +2.51 Ptnml(0-2): 575, 3847, 7659, 4016, 611 https://tests.stockfishchess.org/tests/view/5ee6c4e687586124bc2c10d4 LTC: LLR: 2.95 (-2.94,2.94) {0.25,1.75} Total: 134368 W: 16869 L: 16319 D: 101180 Elo +1.42 Ptnml(0-2): 908, 12083, 40708, 12521, 964 https://tests.stockfishchess.org/tests/view/5ee74e60aae8aec816ab756a closes https://github.com/official-stockfish/Stockfish/pull/2747 Bench: 5299456 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: mstembera
Date: Wed Jun 17 07:32:16 2020 +0200 Timestamp: 1592371936 Use 128 bit multiply for TT index Remove super cluster stuff from TT and just use a 128 bit multiply. STC https://tests.stockfishchess.org/tests/view/5ee719b3aae8aec816ab7548 LLR: 2.94 (-2.94,2.94) {-1.50,0.50} Total: 12736 W: 2502 L: 2333 D: 7901 Elo +4.61 Ptnml(0-2): 191, 1452, 2944, 1559, 222 LTC https://tests.stockfishchess.org/tests/view/5ee732d1aae8aec816ab7556 LLR: 2.93 (-2.94,2.94) {-1.50,0.50} Total: 27584 W: 3431 L: 3350 D: 20803 Elo +1.02 Ptnml(0-2): 173, 2500, 8400, 2511, 208 Scheme back to being derived from https://lemire.me/blog/2016/06/27/a-fast-alternative-to-the-modulo-reduction/ Also the default optimized version of the index calculation now uses fewer instructions. https://godbolt.org/z/Tktxbv Might benefit from mulx (requires -mbmi2) closes https://github.com/official-stockfish/Stockfish/pull/2744 bench: 4320954 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: Mon Jun 15 08:05:16 2020 +0200 Timestamp: 1592201116 Retuned values after eval quantize patch. The last search tune patch was tested before the implementation of #2733 which presumably changed the search characteristics noticeably. Another tuning run was done, see https://tests.stockfishchess.org/tests/view/5ee5b434ca6c451633a9a08c and the updated values passed these tests: STC: LLR: 2.93 (-2.94,2.94) {-0.50,1.50} Total: 34352 W: 6600 L: 6360 D: 21392 Elo +2.43 Ptnml(0-2): 581, 3947, 7914, 4119, 615 https://tests.stockfishchess.org/tests/view/5ee62f05ca6c451633a9a15f LTC 60+0.6 th 1 : LLR: 2.97 (-2.94,2.94) {0.25,1.75} Total: 11176 W: 1499 L: 1304 D: 8373 Elo +6.06 Ptnml(0-2): 69, 933, 3403, 1100, 83 https://tests.stockfishchess.org/tests/view/5ee6205bca6c451633a9a147 SMP LTC 20+0.2 th 8 : LLR: 2.93 (-2.94,2.94) {0.25,1.75} Total: 54032 W: 6126 L: 5826 D: 42080 Elo +1.93 Ptnml(0-2): 278, 4454, 17280, 4698, 306 https://tests.stockfishchess.org/tests/view/5ee62f25ca6c451633a9a162 Closes https://github.com/official-stockfish/Stockfish/pull/2742 Bench 4957812 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 Jun 13 13:33:18 2020 +0200 Timestamp: 1592047998 Tuned values for search constants Tuned search constants after many search patches since the last successful tune. 1st LTC @ 60+0.6 th 1 : LLR: 2.97 (-2.94,2.94) {0.25,1.75} Total: 57656 W: 7369 L: 7036 D: 43251 Elo +2.01 Ptnml(0-2): 393, 5214, 17336, 5437, 448 https://tests.stockfishchess.org/tests/view/5ee1e074f29b40b0fc95af19 SMP LTC @ 20+0.2 th 8 : LLR: 2.95 (-2.94,2.94) {0.25,1.75} Total: 83576 W: 9731 L: 9341 D: 64504 Elo +1.62 Ptnml(0-2): 464, 7062, 26369, 7406, 487 https://tests.stockfishchess.org/tests/view/5ee35a21f29b40b0fc95b008 The changes were rebased on top of a successful patch by Viz (see #2734) and two different ways of doing this were tested. The successful test modified the constants in the patch by Viz in a similar manner to the tuning run: LTC (rebased) @ 60+0.6 th 1 : LLR: 2.94 (-2.94,2.94) {0.25,1.75} Total: 193384 W: 24241 L: 23521 D: 145622 Elo +1.29 Ptnml(0-2): 1309, 17497, 58472, 17993, 1421 https://tests.stockfishchess.org/tests/view/5ee43319ca6c451633a995f9 Further work: the recent patch to quantize eval #2733 affects search quit quite a bit, so doing another tune in, say, three months time might be a good idea. closes https://github.com/official-stockfish/Stockfish/pull/2735 Bench 4246971 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: Sat Jun 13 07:10:34 2020 +0200 Timestamp: 1592025034 Quantize eval to multiples of 16 Removes some excess precision, helps searchs. Effectively reintroduces evaluation grain, with a slightly different context. https://github.com/official-stockfish/Stockfish/commit/45dbd9cd0303d0db469670af8ec3598731a4eace passed STC LLR: 2.97 (-2.94,2.94) {-0.50,1.50} Total: 197032 W: 37938 L: 37462 D: 121632 Elo +0.84 Ptnml(0-2): 3359, 22994, 45446, 23246, 3471 https://tests.stockfishchess.org/tests/view/5ee0c228f29b40b0fc95ae53 passed LTC LLR: 2.94 (-2.94,2.94) {0.25,1.75} Total: 77696 W: 9970 L: 9581 D: 58145 Elo +1.74 Ptnml(0-2): 530, 7075, 23311, 7340, 592 https://tests.stockfishchess.org/tests/view/5ee21426f29b40b0fc95af43 passed LTC SMP LLR: 2.96 (-2.94,2.94) {0.25,1.75} Total: 64136 W: 7425 L: 7091 D: 49620 Elo +1.81 Ptnml(0-2): 345, 5416, 20228, 5718, 361 https://tests.stockfishchess.org/tests/view/5ee387bbf29b40b0fc95b04c closes https://github.com/official-stockfish/Stockfish/pull/2733 Bench: 4939103 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 Jun 13 06:48:58 2020 +0200 Timestamp: 1592023738 Adjust history threshold for quiet moves futility pruning This patch adjusts the threshold for futility pruning of quiet moves using the continuation history array contHist[5], in the same way as it is used in movepicker. passed STC: https://tests.stockfishchess.org/tests/view/5ee3f88bca6c451633a9959f LLR: 2.94 (-2.94,2.94) {-0.50,1.50} Total: 55984 W: 10822 L: 10552 D: 34610 Elo +1.68 Ptnml(0-2): 952, 6435, 12941, 6719, 945 passed LTC: https://tests.stockfishchess.org/tests/view/5ee4186dca6c451633a995cf LLR: 2.96 (-2.94,2.94) {0.25,1.75} Total: 41712 W: 5402 L: 5114 D: 31196 Elo +2.40 Ptnml(0-2): 293, 3766, 12469, 4016, 312 closes https://github.com/official-stockfish/Stockfish/pull/2734 Bench: 4715960 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: Wed Jun 10 13:07:12 2020 +0200 Timestamp: 1591787232 Improve the anti-shuffling policy We replace the current decrease of the complexity term in initiative when shuffling by a direct damping of the evaluation. This scheme may have two benefits over the initiative approach: a) the damping effect is more brutal for fortresses with heavy pieces on the board, because the initiative term is almost an endgame term; b) the initiative implementation had a funny side effect, almost a bug, in the rare positions where mg > 0, eg < 0 and the tampered eval returned a positive value (ie with heavy pieces still on the board): sending eg to zero via shuffling would **increase** the tampered eval instead of decreasing it, which is somewhat illogical. This patch avoids this phenomenon. STC: LLR: 2.94 (-2.94,2.94) {-0.50,1.50} Total: 43072 W: 8373 L: 8121 D: 26578 Elo +2.03 Ptnml(0-2): 729, 4954, 9940, 5162, 751 https://tests.stockfishchess.org/tests/view/5ee008ebf29b40b0fc95ade2 LTC: LLR: 2.94 (-2.94,2.94) {0.25,1.75} Total: 37376 W: 4816 L: 4543 D: 28017 Elo +2.54 Ptnml(0-2): 259, 3329, 11286, 3508, 306 https://tests.stockfishchess.org/tests/view/5ee03b06f29b40b0fc95ae0c Closes https://github.com/official-stockfish/Stockfish/pull/2727 Bench: 4757174 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: Tue Jun 9 18:44:07 2020 +0200 Timestamp: 1591721047 Increase the maximum hash size by a factor of 256 Conceptually group hash clusters into super clusters of 256 clusters. This scheme allows us to use hash sizes up to 32 TB (= 2^32 super clusters = 2^40 clusters). Use 48 bits of the Zobrist key to choose the cluster index. We use 8 extra bits to mitigate the quantization error for very large hashes when scaling the hash key to cluster index. The hash index computation is organized to be compatible with the existing scheme for power-of-two hash sizes up to 128 GB. Fixes https://github.com/official-stockfish/Stockfish/issues/1349 closes https://github.com/official-stockfish/Stockfish/pull/2722 Passed non-regression STC: LLR: 2.93 (-2.94,2.94) {-1.50,0.50} Total: 37976 W: 7336 L: 7211 D: 23429 Elo +1.14 Ptnml(0-2): 578, 4295, 9149, 4356, 610 https://tests.stockfishchess.org/tests/view/5edcbaaef29b40b0fc95abc5 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: nguyenpham
Date: Tue Jun 9 18:31:56 2020 +0200 Timestamp: 1591720316 Improve Readme.md about compiling Reparagraph, add an example how to compile on Unix-like systems closes https://github.com/official-stockfish/Stockfish/pull/2724 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: NguyenPham
Date: Tue Jun 9 18:28:20 2020 +0200 Timestamp: 1591720100 show coordinates when displaying board closes https://github.com/official-stockfish/Stockfish/pull/2723 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: protonspring
Date: Tue Jun 9 18:22:27 2020 +0200 Timestamp: 1591719747 Refactor some threads related code. This is a code style change that moves some pure thread code into the threads class. It is a bit more code, but it makes search.cpp cleaner and easier to read by hiding some thread specific functionality. STC (SMP) LLR: 2.93 (-2.94,2.94) {-1.50,0.50} Total: 75896 W: 12073 L: 12026 D: 51797 Elo +0.22 Ptnml(0-2): 828, 8224, 19872, 8121, 903 https://tests.stockfishchess.org/tests/view/5ed492e8f29b40b0fc95a74c closes https://github.com/official-stockfish/Stockfish/pull/2720 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: protonspring
Date: Tue Jun 9 18:13:24 2020 +0200 Timestamp: 1591719204 Wrap all access to LineBB and add assert This is a non-functional code style change which provides a safe access handler for LineBB. Also includes an assert in debug mode to verify square correctness. closes https://github.com/official-stockfish/Stockfish/pull/2719 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: Tue Jun 9 18:11:44 2020 +0200 Timestamp: 1591719104 join scale_factor, initiative and mg+eg reduction Merging this code into one function `winnable()`. Should allow common concepts used to adjust the eg value, either by addition or scaling, to be combined more effectively. Improve trace function. closes https://github.com/official-stockfish/Stockfish/pull/2710 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: pb00067
Date: Sat Jun 6 16:18:42 2020 +0200 Timestamp: 1591453122 Use lowply-history also on low depths STC: https://tests.stockfishchess.org/tests/view/5ed75078f29b40b0fc95a8b9 LLR: 2.93 (-2.94,2.94) {-0.50,1.50} Total: 73928 W: 14301 L: 14005 D: 45622 Elo +1.39 Ptnml(0-2): 1243, 8572, 17096, 8752, 1301 LTC: https://tests.stockfishchess.org/tests/view/5ed895e0f29b40b0fc95a976 LLR: 2.93 (-2.94,2.94) {0.25,1.75} Total: 154848 W: 19684 L: 19074 D: 116090 Elo +1.37 Ptnml(0-2): 1048, 14108, 46627, 14468, 1173 closes https://github.com/official-stockfish/Stockfish/pull/2718 bench: 4582693 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 Jun 6 16:03:19 2020 +0200 Timestamp: 1591452199 small speed-up in movegen pass color as a template parameter. closes https://github.com/official-stockfish/Stockfish/pull/2715 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: Sat Jun 6 15:58:50 2020 +0200 Timestamp: 1591451930 Minimal thinking time, even if only one rootMove. without search, the eval returned can be misleading (e.g. mate instead of draw), leading to wrong adjudication. With a minimal search, this is avoided. This patch leads to 1ms long searches if there is only 1 move, similar patches all indicate a small Elo gain. Fixes https://github.com/official-stockfish/Stockfish/issues/2707 Passed non-regression STC: LLR: 2.93 (-2.94,2.94) {-1.50,0.50} Total: 22312 W: 4350 L: 4204 D: 13758 Elo +2.27 Ptnml(0-2): 323, 2488, 5437, 2536, 372 https://tests.stockfishchess.org/tests/view/5ed562b0f29b40b0fc95a7d0 closes https://github.com/official-stockfish/Stockfish/pull/2709 Bench: 4733799 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: Thu Jun 4 19:03:54 2020 +0200 Timestamp: 1591290234 Singular quiet LMR If ttMove is a capture and had a singular extension, it is probably the best move. No need to make a decrease of LMR on other moves. STC LLR: 2.96 (-2.94,2.94) {-0.50,1.50} Total: 41968 W: 8170 L: 7918 D: 25880 Elo +2.09 Ptnml(0-2): 733, 4770, 9726, 5022, 733 https://tests.stockfishchess.org/tests/view/5ed6b666f29b40b0fc95a884 LTC LLR: 2.95 (-2.94,2.94) {0.25,1.75} Total: 71376 W: 9200 L: 8827 D: 53349 Elo +1.82 Ptnml(0-2): 486, 6544, 21342, 6743, 573 https://tests.stockfishchess.org/tests/view/5ed7578bf29b40b0fc95a8c9 closes https://github.com/official-stockfish/Stockfish/pull/2713 Bench: 4733799 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: Mon Jun 1 17:35:02 2020 +0200 Timestamp: 1591025702 Give bonus for bishops that are alligned with enemy kingring. Inspired by the succesful patch "Give bonus for rooks that are alligned with enemy kingring" from Vizvezdenec, this idea has been reused for bishops. Here, we only consider attacks that are not blocked by any pawn. Also we have a 50% higher bonus than for the rooks. STC: LLR: 2.94 (-2.94,2.94) {-0.50,1.50} Total: 68960 W: 13495 L: 13202 D: 42263 Elo +1.48 Ptnml(0-2): 1213, 8018, 15802, 8157, 1290 https://tests.stockfishchess.org/tests/view/5ed27495042fa6d77c3553aa LTC: LLR: 2.96 (-2.94,2.94) {0.25,1.75} Total: 54560 W: 7105 L: 6780 D: 40675 Elo +2.07 Ptnml(0-2): 379, 4986, 16254, 5253, 408 https://tests.stockfishchess.org/tests/view/5ed30375596e6dc1e1f97425 closes https://github.com/official-stockfish/Stockfish/pull/2708 Bench: 4860021 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: ElbertoOne
Date: Mon Jun 1 17:27:29 2020 +0200 Timestamp: 1591025249 Isolated pawns tweak Give opposed doubled isolated pawns only the Doubled penalty. The other isolated pawns get the Isolated penalty and the WeakUnopposed penalty. The popcount condition has been replaced with an opposed check, which is non-functional, but probably gives a speed-up. Passed STC (https://tests.stockfishchess.org/tests/view/5ed0f0f0042fa6d77c3552f5): LLR: 2.96 (-2.94,2.94) {-0.50,1.50} Total: 121832 W: 23562 L: 23195 D: 75075 Elo +1.05 Ptnml(0-2): 2092, 14064, 28313, 14279, 2168 LTC: (https://tests.stockfishchess.org/tests/view/5ed22e40042fa6d77c355387) LLR: 2.96 (-2.94,2.94) {0.25,1.75} Total: 103368 W: 13232 L: 12768 D: 77368 Elo +1.56 Ptnml(0-2): 693, 9484, 30919, 9842, 746 closes https://github.com/official-stockfish/Stockfish/pull/2706 Bench: 4085694 see source |