| 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: Sat Sep 14 07:34:19 2019 +0200 Timestamp: 1568439259 Update Makefile documentation Follow-up to previous commit. Update the documentation for the user when using `make`, to show the preferred bmi2 compile in the advanced examples section. Note: I made a mistake in the previous commit comment, the documentation is shown when using `make` or `make help`, not `make --help`. 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: Sat Sep 14 07:11:23 2019 +0200 Timestamp: 1568437883 Add sse4 if bmi2 is enabled The only change done to the Makefile to get a somewhat faster binary as discussed in #2291 is to add -msse4 to the compile options of the bmi2 build. Since all processors supporting bmi2 also support sse4 this can be done easily. It is a useful step to avoid sending around custom and poorly tested builds. The speedup isn't enough to pass [0,4] but it is roughly 1.15Elo and a LOS of 90%: LLR: -2.95 (-2.94,2.94) [0.00,4.00] Total: 93009 W: 20519 L: 20316 D: 52174 Elo +0.76 Also rewrite the documentation for the user when using `make --help`, so that the order of architectures for x86-64 has the more performant build one on top. Closes https://github.com/official-stockfish/Stockfish/pull/2300 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: Thu Sep 12 10:33:18 2019 +0200 Timestamp: 1568277198 Scale down complexity for almost unwinnable endgames This patch greatly scales down complexity of endgames when the following conditions are all true together: - pawns are all on one flank - stronger side king is not outflanking weaker side - no passed pawns are present This should improve stockfish evaluation of obvious draws 4 vs 3, 3 vs 2 and 2 vs 1 pawns in rook/queen/knight/bishop single flank endgames where strong side can not make progress. passed STC LLR: 2.94 (-2.94,2.94) [0.50,4.50] Total: 15843 W: 3601 L: 3359 D: 8883 Elo +5.31 passed LTC LLR: 2.96 (-2.94,2.94) [0.00,3.50] Total: 121275 W: 20107 L: 19597 D: 81571 Elo +1.46 Closes https://github.com/official-stockfish/Stockfish/pull/2298 Bench: 3954190 ========================== How to continue from there? a) This could be a powerful idea for refining some parts of the evaluation function, a bit like when we try quadratics or other equations to emphasize certain situations (xoto10). b) Some other combinaison values for this bonus can be done further, or overall retuning of weight and offset while keeping the formula simple. 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 Sep 12 10:05:35 2019 +0200 Timestamp: 1568275535 Bonus for rook on same file as their queen This patch creates a simple bonus for a rook that is on the same file as the opponent's queen. STC 10+0.1 th 1 : LLR: 2.95 (-2.94,2.94) [0.50,4.50] Total: 45609 W: 10120 L: 9733 D: 25756 Elo +2.95 http://tests.stockfishchess.org/tests/view/5d79895a0ebc5902d385484a LTC 60+0.6 th 1 : LLR: 2.96 (-2.94,2.94) [0.00,3.50] Total: 51651 W: 8606 L: 8288 D: 34757 Elo +2.14 http://tests.stockfishchess.org/tests/view/5d79a0850ebc5902d3854d27 Many thanks to @noobpwnftw for providing the extra cpu resources for fishtest, which led to me doing these tests. Closes https://github.com/official-stockfish/Stockfish/pull/2297 Bench: 4024461 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: Thu Sep 12 09:44:40 2019 +0200 Timestamp: 1568274280 Simplify Weak Lever This is a simplification that integrated WeakLever into doubled pawns. Since we already check for !support for Doubled pawns, it is trivial to check for weak lever by just checking more_than_one(lever). We also introduce the Score * bool operation overload to remove some casts in the code. STC LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 26757 W: 5842 L: 5731 D: 15184 Elo +1.44 http://tests.stockfishchess.org/tests/view/5d77ee220ebc5902d384e5a4 Closes https://github.com/official-stockfish/Stockfish/pull/2295 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: Stefan Geschwentner
Date: Wed Sep 11 18:37:08 2019 +0200 Timestamp: 1568219828 Update reverse move stats For a good quiet non-pawn move consider the reverse move as bad and update the main history with a negative stat bonus. STC: LLR: 2.95 (-2.94,2.94) [0.50,4.50] Total: 19292 W: 4401 L: 4141 D: 10750 Elo +4.68 http://tests.stockfishchess.org/tests/view/5d7751d50ebc594e7864973c LTC: LLR: 2.95 (-2.94,2.94) [0.00,3.50] Total: 111952 W: 18762 L: 18275 D: 74915 Elo +1.51 http://tests.stockfishchess.org/tests/view/5d7771cf0ebc594e786498fa Closes https://github.com/official-stockfish/Stockfish/pull/2294 Bench: 3914238 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 Aug 26 08:49:55 2019 +0200 Timestamp: 1566802195 Tweak Late Move Reduction at root Maintain best move counter at the root and allow there only moves which has a counter of zero for Late Move Reduction. For compensation only the first three moves are excluded from Late Move Reduction per default instead the first four moves. What we can further do: - here we use a simple counting scheme but perhaps some aging to fade out early iterations could be helpful - use the best move counter also at inner nodes for LMR and/or pruning STC: LLR: 2.95 (-2.94,2.94) [0.50,4.50] Total: 17414 W: 3984 L: 3733 D: 9697 Elo +5.01 http://tests.stockfishchess.org/tests/view/5d6234bb0ebc5939d09f2aa2 LTC: LLR: 2.96 (-2.94,2.94) [0.00,3.50] Total: 38058 W: 6448 L: 6166 D: 25444 Elo +2.57 http://tests.stockfishchess.org/tests/view/5d62681a0ebc5939d09f2f27 Closes https://github.com/official-stockfish/Stockfish/pull/2282 Bench: 3568210 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: VoyagerOne
Date: Sun Aug 25 11:09:08 2019 +0200 Timestamp: 1566724148 NMP Tweaks Tweak again the null move pruning preconditions. STC: LLR: 2.96 (-2.94,2.94) [0.50,4.50] Total: 19675 W: 4430 L: 4169 D: 11076 Elo +4.61 http://tests.stockfishchess.org/tests/view/5d52bc0e0ebc5925cf108300 LTC: LLR: 2.95 (-2.94,2.94) [0.00,3.50] Total: 73895 W: 12496 L: 12114 D: 49285 Elo +1.80 http://tests.stockfishchess.org/tests/view/5d52dcbc0ebc5925cf108552 Closes https://github.com/official-stockfish/Stockfish/pull/2268 Bench: 3690065 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 Aug 24 08:21:30 2019 +0200 Timestamp: 1566627690 Improve signature of evaluate_shelter() Remove one parameter in function evaluate_shelter(), making all comparisons for castled/uncastled shelter locally in do_king_safety(). Also introduce BlockedStorm penalty. Passed non-regression test at STC: LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 65864 W: 14630 L: 14596 D: 36638 Elo +0.18 http://tests.stockfishchess.org/tests/view/5d5fc80c0ebc5939d09f0acc 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: Fri Aug 23 16:29:29 2019 +0200 Timestamp: 1566570569 Consolidate CastlingSide and CastlingRights This is a non-functional simplification that removes CastlingSide and implements the functionality in CastlingRights (thanks to Jörg Oster for a comment on the first version of this patch). STC LLR: 2.96 (-2.94,2.94) [-3.00,1.00] Total: 53854 W: 12077 L: 12019 D: 29758 Elo +0.37 http://tests.stockfishchess.org/tests/view/5d517b940ebc5925cf107474 Closes https://github.com/official-stockfish/Stockfish/pull/2265 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: Fri Aug 23 09:37:12 2019 +0200 Timestamp: 1566545832 Simplify futility equation This is a functional simplification. The 178 constant for the futility equation in master can be removed. STC LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 42626 W: 9508 L: 9428 D: 23690 Elo +0.65 http://tests.stockfishchess.org/tests/view/5d5d4e320ebc5925cf11254e LTC LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 26182 W: 4432 L: 4320 D: 17430 Elo +1.49 http://tests.stockfishchess.org/tests/view/5d5df70d0ebc5925cf112fee Closes https://github.com/official-stockfish/Stockfish/pull/2278 Bench: 3985701 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 Aug 21 10:47:40 2019 +0200 Timestamp: 1566377260 Late move reduction, captures and CUT nodes Expand of Stefan Geschwentner's original idea: we always do LMR for captures at cutnodes. Passed STC http://tests.stockfishchess.org/tests/view/5d5b2f8e0ebc5925cf1111b8 LLR: 2.96 (-2.94,2.94) [0.50,4.50] Total: 36026 W: 8122 L: 7779 D: 20125 Elo +3.31 Passed LTC http://tests.stockfishchess.org/tests/view/5d5b40c80ebc5925cf111353 LLR: 3.22 (-2.94,2.94) [0.00,3.50] Total: 133502 W: 22508 L: 21943 D: 89051 Elo +1.47 Closes https://github.com/official-stockfish/Stockfish/pull/2273 Bench: 3494372 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: Wed Aug 21 09:34:46 2019 +0200 Timestamp: 1566372886 Tuned Futility Equation @Vizvezdenec array suggested that alternate values may be better than current master (see pull request #2270 ). I tuned some linear equations to more closely represent his values and it passed. These futility values seem quite sensitive, so perhaps additional Elo improvements can be found here. STC LLR: 2.95 (-2.94,2.94) [0.50,4.50] Total: 12257 W: 2820 L: 2595 D: 6842 Elo +6.38 http://tests.stockfishchess.org/tests/view/5d5b2f360ebc5925cf1111ac LTC LLR: 2.96 (-2.94,2.94) [0.00,3.50] Total: 20273 W: 3497 L: 3264 D: 13512 Elo +3.99 http://tests.stockfishchess.org/tests/view/5d5c0d250ebc5925cf111ac3 Closes https://github.com/official-stockfish/Stockfish/pull/2272 ------------------------------------------ How to continue from there ? a) we can try a simpler version for the futility margin, this would be a simplification : margin = 188 * (depth - improving) b) on the other direction, we can try a complexification by trying again to gain Elo with an complete array of futility values. ------------------------------------------ Bench: 4330402 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: Jean Gauthier
Date: Wed Aug 21 09:11:17 2019 +0200 Timestamp: 1566371477 Slight speep up fetching the endgame table Replace calls to count(key) + operator[key] with a single call to find(key). Replace the std::map with std::unordered_map which provide O(1) access, although the map has a really small number of objects. Test with [0..4] failed yellow: TC 10+0.1 SPRT elo0: 0.00 alpha: 0.05 elo1: 4.00 beta: 0.05 LLR -2.96 [-2.94,2.94] (rejected) Elo 1.01 [-0.87,3.08] (95%) LOS 85.3% Games 71860 [w:22.3%, l:22.2%, d:55.5%] http://tests.stockfishchess.org/tests/view/5d5432210ebc5925cf109d61 Closes https://github.com/official-stockfish/Stockfish/pull/2269 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: Alain SAVARD
Date: Wed Aug 14 22:15:48 2019 +0200 Timestamp: 1565813748 Assorted trivial cleanups (July 2019) 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: Stefan Geschwentner
Date: Wed Aug 14 20:59:04 2019 +0200 Timestamp: 1565809144 Tweak unsafe checks Remove mobility area for unsafe checks. Also separate the evaluation terms for unsafe checks and blockers for king with adjusted weights. STC: LLR: 2.95 (-2.94,2.94) [0.50,4.50] Total: 124526 W: 28292 L: 27504 D: 68730 Elo +2.20 http://tests.stockfishchess.org/tests/view/5d5138290ebc5925cf1070c3 LTC: LLR: 2.96 (-2.94,2.94) [0.00,3.50] Total: 84968 W: 14499 L: 14083 D: 56386 Elo +1.70 http://tests.stockfishchess.org/tests/view/5d527cfa0ebc5925cf107f93 Bench: 4139590 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: joergoster
Date: Thu Aug 1 09:28:34 2019 +0200 Timestamp: 1564644514 Revert "Improve multiPV mode" This reverts commit a8de07cc26999e2fef7298a63bfe349aaa4650fa. 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 Jul 31 09:35:20 2019 +0200 Timestamp: 1564558520 Tune search constants This is the result of a 200k tuning run at LTC: http://tests.stockfishchess.org/tests/view/5d3576b70ebc5925cf0e9e1e which passed quickly at LTC: LLR: 2.95 (-2.94,2.94) [0.50,4.50] Total: 12954 W: 2280 L: 2074 D: 8600 Elo +5.53 http://tests.stockfishchess.org/tests/view/5d3ff3f70ebc5925cf0f87a2 STC failed, but second LTC at [0,4] passed easily: LLR: 2.96 (-2.94,2.94) [0.00,4.00] Total: 8004 W: 1432 L: 1252 D: 5320 Elo +7.81 http://tests.stockfishchess.org/tests/view/5d407cff0ebc5925cf0f9119 Further work? No doubt some of these changes produce most of the gain and some are neutral or even bad, so further testing on individual/groups of parameters changed here might show more gains. It does look like these tests might need to be at LTC though, so maybe not too practical to do. See the thread in the pull request for an interesting discussion: https://github.com/official-stockfish/Stockfish/pull/2260 Bench: 4024328 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 Jul 28 19:48:57 2019 +0200 Timestamp: 1564336137 Simplify weak lever STC LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 14844 W: 3347 L: 3212 D: 8285 Elo +3.16 http://tests.stockfishchess.org/tests/view/5d3a2d7b0ebc5925cf0f1632 LTC LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 55261 W: 9374 L: 9309 D: 36578 Elo +0.41 http://tests.stockfishchess.org/tests/view/5d3a3d9e0ebc5925cf0f1786 Closes https://github.com/official-stockfish/Stockfish/pull/2257 bench: 3484124 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: Fri Jul 26 03:33:32 2019 +0200 Timestamp: 1564104812 Bug fix: always choose shortest mate in multithread mode In current master, with the voting scheme the best thread selection may pick a non mate or not the shortest mate thread. This patch fixes this bug. Formatting suggestion by Jörg Oster. Related past pull requests: https://github.com/official-stockfish/Stockfish/pull/1074 https://github.com/official-stockfish/Stockfish/pull/1215 Passed a [-4..0] verification test with 3 threads: LLR: 2.95 (-2.94,2.94) [-4.00,0.00] Total: 57158 W: 11374 L: 11424 D: 34360 Elo -0.30 http://tests.stockfishchess.org/tests/view/5d22deb30ebc5925cf0caefd Closes https://github.com/official-stockfish/Stockfish/pull/2226 No functional change (in single threaded mode) ---------------------------------------------------- Comment by Jörg Oster Just one sample output to demonstrate the effect of this patch. 5 Threads, 1 GB Hash +---+---+---+---+---+---+---+---+ | r | | b | | | r | k | | +---+---+---+---+---+---+---+---+ | | | | n | | p | b | | +---+---+---+---+---+---+---+---+ | | | p | | p | | p | | +---+---+---+---+---+---+---+---+ | p | | | | | | P | | +---+---+---+---+---+---+---+---+ | P | p | | | B | | N | Q | +---+---+---+---+---+---+---+---+ | | q | | | | | P | | +---+---+---+---+---+---+---+---+ | | | R | | | P | | | +---+---+---+---+---+---+---+---+ | | | | R | | | K | | +---+---+---+---+---+---+---+---+ Fen: r1b2rk1/3n1pb1/2p1p1p1/p5P1/Pp2B1NQ/1q4P1/2R2P2/3R2K1 w - - 8 34 Key: 38B4CA1067D4F477 Checkers: ucinewgame isready readyok go mate 17 searchmoves d1d7 info depth 65 seldepth 36 multipv 1 score mate 18 nodes 785875935 nps 8650448 hashfull 1000 tbhits 0 time 90848 pv d1d7 c8d7 g4f6 g7f6 g5f6 b3a3 g1g2 a3a1 h4g5 a1f6 g5f6 e6e5 c2c1 d7h3 g2h3 a8a6 h3g2 c6c5 f6a6 g8g7 c1c5 f7f6 a6e6 f8f7 c5c8 f6f5 e4d5 g7h6 e6f7 f5f4 f7e7 f4f3 d5f3 b4b3 c8h8 info depth 63 seldepth 36 multipv 1 score mate 17 nodes 785875935 nps 8650448 hashfull 1000 tbhits 0 time 90848 pv d1d7 c8d7 g4f6 g7f6 g5f6 b3a3 g1g2 a3a1 h4g5 a1f6 g5f6 e6e5 c2c1 d7h3 g2h3 a8a6 c1d1 b4b3 h3g2 c6c5 f6a6 g8g7 d1d7 g7g8 a6f6 b3b2 e4g6 b2b1q g6f7 f8f7 f6f7 g8h8 f7g7 bestmove d1d7 ponder c8d7 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: Fri Jul 26 02:12:23 2019 +0200 Timestamp: 1564099943 Remove operators for color This is a non-functional and untested simplification. The increment operator for color isn't really necessary and seems a bit unnatural to me. Passed STC: LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 47027 W: 10589 L: 10518 D: 25920 Elo +0.52 http://tests.stockfishchess.org/tests/view/5d3472d10ebc5925cf0e8d3e Closes https://github.com/official-stockfish/Stockfish/pull/2247 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: Thu Jul 25 09:16:53 2019 +0200 Timestamp: 1564039013 Tweak of SEE pruning condition passed STC http://tests.stockfishchess.org/tests/view/5d386bda0ebc5925cf0ef49a LLR: 2.95 (-2.94,2.94) [0.50,4.50] Total: 56874 W: 12820 L: 12373 D: 31681 Elo +2.73 passed LTC http://tests.stockfishchess.org/tests/view/5d38873a0ebc5925cf0ef86e LLR: 2.95 (-2.94,2.94) [0.00,3.50] Total: 43512 W: 7547 L: 7247 D: 28718 Elo +2.40 Additional thanks to @locutus2 , @miguel-l and @xoto10 for fruitful discussion. There may be some more elo there since this tweak was the first one and numbers are more or less arbitrary. Closes https://github.com/official-stockfish/Stockfish/pull/2256 Bench 3935523 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: Alain SAVARD
Date: Thu Jul 25 09:05:08 2019 +0200 Timestamp: 1564038308 Pawn clean up Non functional simplification when we find the passed pawns in pawn.cpp and some code clean up. It also better follows the pattern "flag the pawn" and "score the pawn". ------------------------- The idea behind the third condition for candidate passed pawn is a little bit difficult to visualize. Just for the record, the idea is the following: Consider White e5 d4 against black e6. d4 can (in some endgames) push to d5 and lever e6. Thanks to this sacrifice, or after d5xe6, we consider e5 as "passed". However: - if White e5/d4 against black e6/c6: d4 cannot safely push to d5 since d5 is double attacked; - if White e5/d4 against black e6/d5: d4 cannot safely push to d5 since it is occupied. This is exactly what the following expression does: ``` && (shift<Up>(support) & ~(theirPawns | dblAttackThem))) ``` -------------------------- http://tests.stockfishchess.org/tests/view/5d3325bb0ebc5925cf0e6e91 LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 124666 W: 27586 L: 27669 D: 69411 Elo -0.23 Closes https://github.com/official-stockfish/Stockfish/pull/2255 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: VoyagerOne
Date: Thu Jul 25 08:46:26 2019 +0200 Timestamp: 1564037186 LMR Tweak Reset statScore to zero if negative and most stats shows >= 0 STC: LLR: 2.95 (-2.94,2.94) [0.50,4.50] Total: 23097 W: 5242 L: 4963 D: 12892 Elo +4.20 http://tests.stockfishchess.org/tests/view/5d31dd650ebc5925cf0e598f LTC: LLR: 2.95 (-2.94,2.94) [0.00,3.50] Total: 227597 W: 39013 L: 38191 D: 150393 Elo +1.25 http://tests.stockfishchess.org/tests/view/5d31fcdf0ebc5925cf0e5c13 Closes https://github.com/official-stockfish/Stockfish/pull/2252 Bench: 3242229 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: Alain SAVARD
Date: Thu Jul 25 08:32:49 2019 +0200 Timestamp: 1564036369 Passed file cleanup Protonspring had a successful functional simplification that removes the PassedFile array using a simple linear equation. Merge the additive term S(5, 10) of protonspring passed file simplification (pull request https://github.com/official-stockfish/Stockfish/pull/2250) into the PassedRank array. This harmless change has a different bench because the candidate passer evaluation will always get less compared to #2250, as we apply bonus = bonus /2. Tested as a non-regression against #2250 Passed STC http://tests.stockfishchess.org/tests/view/5d33427e0ebc5925cf0e6fa2 LLR: 2.96 (-2.94,2.94) [-3.00,1.00] Total: 81459 W: 18174 L: 18171 D: 45114 Elo +0.01 Passed LTC http://tests.stockfishchess.org/tests/view/5d335c8d0ebc5925cf0e731e LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 18525 W: 3176 L: 3052 D: 12297 Elo +2.33 Closes https://github.com/official-stockfish/Stockfish/pull/2250 Closes https://github.com/official-stockfish/Stockfish/pull/2251 Bench: 3859856 see source |