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 |  Subject: Latest abrok Development Version January 7th (SF The gift that keeps on giving ) Tue Jan 07, 2020 11:54 am | |
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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: lantonov
Date: Tue Jan 7 11:47:39 2020 +0100
Timestamp: 1578394059
Tuned nullmove search
Tuning was done with Bayesian optimisation and sequential use of gaussian process
regressor and gaussian process classifier. The latter is used in lieu of ordinal
categorical modelling. Details will be given in Fishcooking forum topic: https://groups.google.com/forum/?fromgroups=#!topic/fishcooking/b3uhBBJcJG4
STC:
LLR: 2.96 (-2.94,2.94) {-1.00,3.00}
Total: 10248 W: 2361 L: 2233 D: 5654 Elo +4.34
Ptnml(0-2): 191, 1153, 2303, 1276, 194
http://tests.stockfishchess.org/tests/view/5e0ba4159d3fbe26f672d4e6
LTC:
LLR: 2.94 (-2.94,2.94) {0.00,2.00}
Total: 16003 W: 2648 L: 2458 D: 10897 Elo +4.13
Ptnml(0-2): 121, 1595, 4394, 1718, 153
http://tests.stockfishchess.org/tests/view/5e0bb8519d3fbe26f672d4fd
Closes https://github.com/official-stockfish/Stockfish/pull/2468
Bench 4747984 | 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: Tue Jan 7 11:33:53 2020 +0100
Timestamp: 1578393233
Introduce king infiltration bonus
Add king infiltration bonus to initiative calculation. Idea is somewhat similar
to outflanking - endgames are hard to win if each king is on it side of the board.
So this adds extra bonus for one of kings crossing the middle line.
STC
LLR: 2.94 (-2.94,2.94) {-1.00,3.00}
Total: 10533 W: 2372 L: 2242 D: 5919 Elo +4.29
Ptnml(0-2): 196, 1198, 2352, 1316, 202
http://tests.stockfishchess.org/tests/view/5e0e6fd1e97ea42ea89da9b3
LTC
LLR: 2.96 (-2.94,2.94) {0.00,2.00}
Total: 15074 W: 2563 L: 2381 D: 10130 Elo +4.20
Ptnml(0-2): 118, 1500, 4111, 1663, 129
http://tests.stockfishchess.org/tests/view/5e0e857ae97ea42ea89da9cc
Closes https://github.com/official-stockfish/Stockfish/pull/2471
Bench: 5146339 | 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 Jan 7 11:18:50 2020 +0100
Timestamp: 1578392330
Tweak futility pruning
Exclude moves with a good history total from futility pruning. This adds
a condition for quiet futility pruning: history total has to be low.
STC:
LLR: 2.94 (-2.94,2.94) {-1.00,3.00}
Total: 20095 W: 4503 L: 4342 D: 11250 Elo +2.78
Ptnml(0-2): 362, 2380, 4422, 2486, 388
http://tests.stockfishchess.org/tests/view/5e0d7c5387585b1706b68370
LTC:
LLR: 2.94 (-2.94,2.94) {0.00,2.00}
Total: 53016 W: 8587 L: 8302 D: 36127 Elo +1.87
Ptnml(0-2): 353, 5397, 14751, 5545, 423
http://tests.stockfishchess.org/tests/view/5e0e30d062fb773bb7047e95
Closes https://github.com/official-stockfish/Stockfish/pull/2472
Bench: 5215200 | 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: Tue Jan 7 11:00:54 2020 +0100
Timestamp: 1578391254
Use a faster implementation of Static Exchange Evaluation
SEE (Static Exchange Evaluation) is a critical component, so we might
indulge some tricks to make it faster. Another pull request #2469 showed
some speedup by removing templates, this version uses Ronald de Man
(@syzygy1) SEE implementation which also unrolls the for loop by
suppressing the min_attacker() helper function and exits as soon as
the last swap is conclusive.
See Ronald de Man version there:
https://github.com/syzygy1/Cfish/blob/master/src/position.c
Patch testes against pull request #2469:
LLR: 2.95 (-2.94,2.94) {-1.00,3.00}
Total: 19365 W: 3771 L: 3634 D: 11960 Elo +2.46
Ptnml(0-2): 241, 1984, 5099, 2092, 255
http://tests.stockfishchess.org/tests/view/5e10eb135e5436dd91b27ba3
And since we are using new SPRT statistics, and that both pull requests
finished with less than 20000 games I also tested against master as
a speed-up:
LLR: 2.99 (-2.94,2.94) {-1.00,3.00}
Total: 18878 W: 3674 L: 3539 D: 11665 Elo +2.48
Ptnml(0-2): 193, 1999, 4966, 2019, 250
http://tests.stockfishchess.org/tests/view/5e10febf12ef906c8b388745
Non functional change |
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looking for Bettina
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