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Remove pawncount array in imbalance

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This is a natural follow up to last commit where values on the
QuadraticOurs diagonal and some piece value deltas were changed.
@Stefano80 tried to simplify the newly introduced pawncount array
using QuadraticOurs[1][1] =52 and a -30 adjustment on pawn values

His STC [-3,1] was green
http://tests.stockfishchess.org/tests/view/5b707f5b0ebc5902bdba2745
but not his LTC[-3,1]
http://tests.stockfishchess.org/tests/view/5b7095700ebc5902bdba2a49

So I started a 80000 30+0.3 SPSA on the QuadraticOurs diagonal and
on the piece values using @Stefano80 start values.

SPSA gave the new values QuadraticOurs[1][1] =38 and a -33 on pawn
values (the other changes on QuadraticOurs were kept, but were not
ignificant according to this test
http://tests.stockfishchess.org/tests/view/5b710ccb0ebc5902bdba2f27)

STC
http://tests.stockfishchess.org/tests/view/5b710b220ebc5902bdba2f19
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 50902 W: 11214 L: 11150 D: 28538

LTC
http://tests.stockfishchess.org/tests/view/5b7124ef0ebc5902bdba3106
LLR: 2.96 (-2.94,2.94) [-3.00,1.00]
Total: 34271 W: 5852 L: 5753 D: 22666

Closes https://github.com/official-stockfish/Stockfish/pull/1735

bench: 4738555
This commit is contained in:
Alain SAVARD
2018-08-14 08:31:56 +02:00
committed by Stéphane Nicolet
parent 41cc4eb953
commit 4d22d3e52d
2 changed files with 10 additions and 12 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
src/types.h
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@@ -182,11 +182,11 @@ enum Value : int {
VALUE_MATE_IN_MAX_PLY = VALUE_MATE - 2 * MAX_PLY,
VALUE_MATED_IN_MAX_PLY = -VALUE_MATE + 2 * MAX_PLY,
PawnValueMg = 175, PawnValueEg = 240,
PawnValueMg = 142, PawnValueEg = 207,
KnightValueMg = 784, KnightValueEg = 868,
BishopValueMg = 831, BishopValueEg = 919,
BishopValueMg = 828, BishopValueEg = 916,
RookValueMg = 1286, RookValueEg = 1378,
QueenValueMg = 2527, QueenValueEg = 2697,
QueenValueMg = 2528, QueenValueEg = 2698,
MidgameLimit = 15258, EndgameLimit = 3915
};