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 |  Subject: Latest abrok Development Version Febuary 5th (SF The gift that keeps on giving Sat Feb 05, 2022 10:50 am | |
| !! 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: Sat Feb 5 07:40:21 2022 +0100
Timestamp: 1644043221
Reintroduce razoring
Razoring was simplified away some years ago, this patch reintroduces it in a slightly different form.
Now for low depths if eval is far below alpha we check if qsearch can push it above alpha - and if it can't we return a fail low.
passed STC
https://tests.stockfishchess.org/tests/view/61fbf968d508ec6a1c9f3274
LLR: 2.94 (-2.94,2.94) <0.00,2.50>
Total: 226120 W: 61106 L: 60472 D: 104542 Elo +0.97
Ptnml(0-2): 1118, 25592, 59080, 26078, 1192
passed LTC
https://tests.stockfishchess.org/tests/view/61fcc569d508ec6a1c9f5617
LLR: 2.94 (-2.94,2.94) <0.50,3.00>
Total: 113128 W: 30851 L: 30397 D: 51880 Elo +1.39
Ptnml(0-2): 114, 11483, 32926, 11917, 124
closes https://github.com/official-stockfish/Stockfish/pull/3921
bench 4684080
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: Michael Chaly
Date: Sat Feb 5 07:38:30 2022 +0100
Timestamp: 1644043110
Introduce movecount pruning for quiet check evasions in qsearch
Idea of this patch is that we usually don't consider quiet check evasions as "good" ones and prefer capture based ones instead. So it makes sense to think that if in qsearch 2 quiet check evasions failed to produce anything good 3rd and further ones wouldn't be good either.
passed STC
https://tests.stockfishchess.org/tests/view/61fc1b1ed508ec6a1c9f397c
LLR: 2.94 (-2.94,2.94) <0.00,2.50>
Total: 58800 W: 15947 L: 15626 D: 27227 Elo +1.90
Ptnml(0-2): 273, 6568, 15462, 6759, 338
passed LTC
https://tests.stockfishchess.org/tests/view/61fcc56dd508ec6a1c9f5619
LLR: 2.95 (-2.94,2.94) <0.50,3.00>
Total: 89544 W: 24208 L: 23810 D: 41526 Elo +1.54
Ptnml(0-2): 81, 9038, 26134, 9440, 79
closes https://github.com/official-stockfish/Stockfish/pull/3920
bench 4830082
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: ppigazzini
Date: Sat Feb 5 07:33:34 2022 +0100
Timestamp: 1644042814
Drop sse from target "x86-32"
have maximal compatibility on legacy target arch, now supporting AMD Athlon
The old behavior can anyway be selected by the user if needed, for example
make -j profile-build ARCH=x86-32 sse=yes
fixes #3904
closes https://github.com/official-stockfish/Stockfish/pull/3918
No functional change
see source |
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