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 |  Subject: Latest abrok Development Version October 9th (SF The gift that keeps on giving ) Wed Oct 09, 2019 1:35 pm | |
| Author: VoyagerOne
Date: Wed Oct 9 15:22:16 2019 +0900
Timestamp: 1570602136
Introduce separate counter-move tables for inCheck
Enhance counter-move history table by adding a inCheck dimension. This doubles
the size of the table but provides more accurate move ordering.
STC: (yellow)
LLR: -2.94 (-2.94,2.94) [0.50,4.50]
Total: 36217 W: 7790 L: 7777 D: 20650 Elo +0.12
http://tests.stockfishchess.org/tests/view/5d9b9a290ebc5902b6d04fe0
LTC:
LLR: 2.95 (-2.94,2.94) [0.00,3.50]
Total: 36665 W: 6063 L: 5788 D: 24814 Elo +2.61
http://tests.stockfishchess.org/tests/view/5d9b9fcc0ebc5902b6d05985
Closes https://github.com/official-stockfish/Stockfish/pull/2353
Bench: 4053577 | 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: 31m059
Date: Wed Oct 9 14:17:52 2019 +0900
Timestamp: 1570598272
No reachable outpost bonus for bishops
Previously, we used various control statements and ternary operators to divide
Outpost into four bonuses, based on whether the outpost was for a knight or
bishop, and whether it was currently an Outpost or merely a potential ("reachable")
one in the future. Bishop outposts, however, have traditionally been worth far
less Elo in testing. An attempt to remove them altogether passed STC, but failed LTC.
Here we include a narrower simplification, removing the reachable Outpost bonus
for bishops. This bonus was always suspect, given that its current implementation
conflicts directly with BishopPawns. BishopPawns penalizes our bishops based on the
number of friendly pawns on the same color of square, but by definition, Outposts
must be pawn-protected! This PR helps to alleviate this conceptual contradiction
without loss of Elo and with slightly simpler code.
On a code level, this allows us to simplify a ternary operator into the previous
"if" block and distribute a multiplication into an existing constant Score. On a
conceptual level, we retire one of the four traditional Outpost bonuses.
STC:
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 22277 W: 4882 L: 4762 D: 12633 Elo +1.87
http://tests.stockfishchess.org/tests/view/5d9aeed60ebc5902b6cf9751
LTC:
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 51206 W: 8353 L: 8280 D: 34573 Elo +0.50
http://tests.stockfishchess.org/tests/view/5d9af1940ebc5902b6cf9cd5
Closes https://github.com/official-stockfish/Stockfish/pull/2352
Bench: 3941591 |
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looking for Bettina
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