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King safety tuning with values obtained by SPSA.

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Part I:

LTC:

LLR: 2.96 (-2.94,2.94) [0.00,4.00]
Total: 11529 W: 2075 L: 1882 D: 7572

Part II:

LTC:

ELO: 2.07 +-2.1 (95%) LOS: 97.3%
Total: 34859 W: 5967 L: 5759 D: 23133

Bench: 7374604

Resolves #228
This commit is contained in:
NicklasPersson
2015-01-28 21:00:09 +00:00
committed by Joona Kiiski
parent 9f0d5241bf
commit 7837fb2aca
2 changed files with 36 additions and 36 deletions
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42
src/pawns.cpp
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@@ -63,33 +63,33 @@ namespace {
// Weakness of our pawn shelter in front of the king by [distance from edge][rank]
const Value ShelterWeakness[][RANK_NB] = {
{ V(100), V(13), V(24), V(64), V(89), V( 93), V(104) },
{ V(110), V( 1), V(29), V(75), V(96), V(102), V(107) },
{ V(102), V( 0), V(39), V(74), V(88), V(101), V( 98) },
{ V( 88), V( 4), V(33), V(67), V(92), V( 94), V(107) } };
{ V( 99), V(23), V(24), V(54), V(85), V( 93), V(107) },
{ V(119), V( 2), V(28), V(72), V(96), V(104), V(114) },
{ V(103), V( 6), V(47), V(74), V(84), V(103), V( 94) },
{ V( 78), V(10), V(41), V(64), V(88), V( 92), V(115) } };
// Danger of enemy pawns moving toward our king by [type][distance from edge][rank]
const Value StormDanger[][4][RANK_NB] = {
{ { V( 0), V( 63), V( 128), V(43), V(27) },
{ V( 0), V( 62), V( 131), V(44), V(26) },
{ V( 0), V( 59), V( 121), V(50), V(28) },
{ V( 0), V( 62), V( 127), V(54), V(28) } },
{ { V(24), V( 40), V( 93), V(42), V(22) },
{ V(24), V( 28), V( 101), V(38), V(20) },
{ V(24), V( 32), V( 95), V(36), V(23) },
{ V(27), V( 24), V( 99), V(36), V(24) } },
{ { V( 0), V( 0), V( 81), V(16), V( 6) },
{ V( 0), V( 0), V( 165), V(29), V( 9) },
{ V( 0), V( 0), V( 163), V(23), V(12) },
{ V( 0), V( 0), V( 161), V(28), V(13) } },
{ { V( 0), V(-296), V(-299), V(55), V(25) },
{ V( 0), V( 67), V( 131), V(46), V(21) },
{ V( 0), V( 65), V( 135), V(50), V(31) },
{ V( 0), V( 62), V( 128), V(51), V(24) } } };
{ { V( 0), V( 65), V( 125), V(37), V(30) },
{ V( 0), V( 57), V( 136), V(39), V(24) },
{ V( 0), V( 50), V( 114), V(45), V(29) },
{ V( 0), V( 58), V( 129), V(56), V(34) } },
{ { V(20), V( 45), V( 91), V(47), V(20) },
{ V(25), V( 23), V( 105), V(38), V(14) },
{ V(21), V( 37), V( 99), V(35), V(21) },
{ V(30), V( 18), V( 105), V(38), V(28) } },
{ { V( 0), V( 0), V( 81), V(13), V( 4) },
{ V( 0), V( 0), V( 169), V(30), V( 4) },
{ V( 0), V( 0), V( 166), V(24), V( 6) },
{ V( 0), V( 0), V( 164), V(24), V(11) } },
{ { V( 0), V(-289), V(-297), V(57), V(29) },
{ V( 0), V( 66), V( 136), V(43), V(16) },
{ V( 0), V( 66), V( 141), V(50), V(31) },
{ V( 0), V( 63), V( 126), V(52), V(23) } } };
// Max bonus for king safety. Corresponds to start position with all the pawns
// in front of the king and no enemy pawn on the horizon.
const Value MaxSafetyBonus = V(257);
const Value MaxSafetyBonus = V(252);
#undef S
#undef V