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Retire KingExposed[] array

Browse source 
And merge its values into KPSQT table.

Passed blazingly fast both short TC:
LLR: 2.95 (-2.94,2.94) [-1.50,4.50]
Total: 5348 W: 1091 L: 971 D: 3286

And long TC:
LLR: 2.96 (-2.94,2.94) [0.00,6.00]
Total: 3029 W: 530 L: 415 D: 2084

bench: 8702197
This commit is contained in:
Arjun Temurnikar 2013-12-29 23:13:39 -08:00 • committed by Marco Costalba
parent 082fbf4264
commit 71440cf77b
2 changed files with 10 additions and 24 deletions
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18
src/evaluate.cpp
View file

@ -207,19 +207,6 @@ namespace {
const int BishopCheck = 2;
const int KnightCheck = 3;
// KingExposed[Square] contains penalties based on the position of the
// defending king, indexed by king's square (from white's point of view).
const int KingExposed[] = {
2, 0, 2, 5, 5, 2, 0, 2,
2, 2, 4, 8, 8, 4, 2, 2,
7, 10, 12, 12, 12, 12, 10, 7,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15
};
// KingDanger[Color][attackUnits] contains the actual king danger weighted
// scores, indexed by color and by a calculated integer number.
Score KingDanger[COLOR_NB][128];
@ -653,11 +640,10 @@ Value do_evaluate(const Position& pos) {
// Initialize the 'attackUnits' variable, which is used later on as an
// index to the KingDanger[] array. The initial value is based on the
// number and types of the enemy's attacking pieces, the number of
// attacked and undefended squares around our king, the square of the
// king, and the quality of the pawn shelter.
// attacked and undefended squares around our king and the quality of
// the pawn shelter (current 'score' value).
attackUnits = std::min(20, (ei.kingAttackersCount[Them] * ei.kingAttackersWeight[Them]) / 2)
+ 3 * (ei.kingAdjacentZoneAttacksCount[Them] + popcount<Max15>(undefended))
+ KingExposed[relative_square(Us, ksq)]
- mg_value(score) / 32;
// Analyse the enemy's safe queen contact checks. Firstly, find the

16
src/psqtab.h
View file

@ -82,14 +82,14 @@ static const Score PSQT[][SQUARE_NB] = {
S(8,-80), S(8,-54), S(8,-42), S(8,-30), S(8,-30), S(8,-42), S(8,-54), S(8,-80)
},
{ // King
S(287, 18), S(311, 77), S(262,105), S(214,135), S(214,135), S(262,105), S(311, 77), S(287, 18),
S(262, 77), S(287,135), S(238,165), S(190,193), S(190,193), S(238,165), S(287,135), S(262, 77),
S(214,105), S(238,165), S(190,193), S(142,222), S(142,222), S(190,193), S(238,165), S(214,105),
S(190,135), S(214,193), S(167,222), S(119,251), S(119,251), S(167,222), S(214,193), S(190,135),
S(167,135), S(190,193), S(142,222), S( 94,251), S( 94,251), S(142,222), S(190,193), S(167,135),
S(142,105), S(167,165), S(119,193), S( 69,222), S( 69,222), S(119,193), S(167,165), S(142,105),
S(119, 77), S(142,135), S( 94,165), S( 46,193), S( 46,193), S( 94,165), S(142,135), S(119, 77),
S(94, 18), S(119, 77), S( 69,105), S( 21,135), S( 21,135), S( 69,105), S(119, 77), S( 94, 18)
S(302, 18), S(326, 77), S(277,105), S(229,135), S(229,135), S(277,105), S(326, 77), S(302, 18),
S(277, 77), S(302,135), S(253,165), S(205,193), S(205,193), S(253,165), S(302,135), S(277, 77),
S(229,105), S(253,165), S(205,193), S(157,222), S(157,222), S(205,193), S(253,165), S(229,105),
S(205,135), S(229,193), S(182,222), S(134,251), S(134,251), S(182,222), S(229,193), S(205,135),
S(182,135), S(205,193), S(157,222), S(109,251), S(109,251), S(157,222), S(205,193), S(182,135),
S(149,105), S(177,165), S(131,193), S( 81,222), S( 81,222), S(131,193), S(177,165), S(149,105),
S(121, 77), S(144,135), S( 98,165), S( 54,193), S( 54,193), S( 98,165), S(144,135), S(121, 77),
S(96, 18), S(119, 77), S( 71,105), S( 26,135), S( 26,135), S( 71,105), S(119, 77), S( 96, 18)
}
};