Latest abrok Development Version Febuary 2nd (SF The gift that keeps on giving

!! latest version !! 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: Michael Chaly Date: Thu Feb 2 18:00:14 2023 +0100 Timestamp: 1675357214 Do less SEE pruning in qsearch Current master prunes all moves with negative SEE values in qsearch. This patch sets constant negative threshold thus allowing some moves with negative SEE values to be searched. Value of threshold is completely arbitrary and can be tweaked - also it as function of depth can be tried. Original idea by author of Alexandria engine. Passed STC https://tests.stockfishchess.org/tests/view/63d79a59a67dd929a5564976 LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 34864 W: 9392 L: 9086 D: 16386 Elo +3.05 Ptnml(0-2): 113, 3742, 9429, 4022, 126 Passed LTC https://tests.stockfishchess.org/tests/view/63d8074aa67dd929a5565bc2 LLR: 2.95 (-2.94,2.94) <0.50,2.50> Total: 91616 W: 24532 L: 24126 D: 42958 Elo +1.54 Ptnml(0-2): 32, 8840, 27662, 9238, 36 closes https://github.com/official-stockfish/Stockfish/pull/4376 Bench: 4010877 see source
Windows x64 for Haswell CPUs Windows x64 for modern computers + AVX2 Windows x64 for modern computers Windows x64 + SSSE3 Windows x64 Linux x64 for Haswell CPUs Linux x64 for modern computers + AVX2 Linux x64 for modern computers Linux x64 + SSSE3 Linux x64	Author: Joost VandeVondele Date: Thu Feb 2 17:58:05 2023 +0100 Timestamp: 1675357085 Update WLD model update the WLD model with about 400M positions extracted from recent LTC games after the net updates. This ensures that the 50% win rate is again at 1.0 eval. closes https://github.com/official-stockfish/Stockfish/pull/4373 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: MinetaS Date: Thu Feb 2 17:49:23 2023 +0100 Timestamp: 1675356563 Add -Wconditional-uninitialized when using Clang Add -Wconditional-uninitialized as it is not controlled by -Wall. closes https://github.com/official-stockfish/Stockfish/pull/4371 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: Muzhen Gaming Date: Thu Feb 2 17:45:57 2023 +0100 Timestamp: 1675356357 Decrease reduction for killer moves with good history If move is a main killer and we have a good history, decrease reduction. STC: https://tests.stockfishchess.org/tests/view/63d38b37721fe2bff693069a LLR: 2.95 (-2.94,2.94) <0.00,2.00> Total: 46688 W: 12542 L: 12222 D: 21924 Elo +2.38 Ptnml(0-2): 126, 5013, 12769, 5287, 149 LTC: https://tests.stockfishchess.org/tests/view/63d471e2bde6e5f3cb4be5d3 LLR: 2.93 (-2.94,2.94) <0.50,2.50> Total: 130976 W: 35033 L: 34555 D: 61388 Elo +1.27 Ptnml(0-2): 38, 12551, 39833, 13027, 39 closes https://github.com/official-stockfish/Stockfish/pull/4369 Bench: 4069938 see source

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