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Introduce new Threats weights = {350, 256}

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Raise the midgame threats weight by 37%.

Passed STC:
LLR: 2.95 (-2.94,2.94) [0.00,4.00]
Total: 8165 W: 1675 L: 1487 D: 5003

and LTC:
LLR: 2.95 (-2.94,2.94) [0.00,4.00]
Total: 28181 W: 4141 L: 3912 D: 20128

Bench: 7824961

Resolves #512
This commit is contained in:
Stéphane Nicolet 2015-11-26 10:15:51 +01:00 • committed by Joona Kiiski
parent 5339ab57d8
commit 5a42427cb8
1 changed files with 4 additions and 4 deletions
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8
src/evaluate.cpp
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@ -107,10 +107,10 @@ namespace {
// Evaluation weights, indexed by the corresponding evaluation term
enum { Mobility, PawnStructure, PassedPawns, Space, KingSafety };
enum { Mobility, PawnStructure, PassedPawns, Space, KingSafety, Threats };
const struct Weight { int mg, eg; } Weights[] = {
{289, 344}, {233, 201}, {221, 273}, {46, 0}, {322, 0}
{289, 344}, {233, 201}, {221, 273}, {46, 0}, {322, 0}, {350, 256}
};
Score operator*(Score s, const Weight& w) {
@ -566,9 +566,9 @@ namespace {
score += popcount<Max15>(b) * PawnAttackThreat;
if (DoTrace)
Trace::add(THREAT, Us, score);
Trace::add(THREAT, Us, score * Weights[Threats]);
return score;
return score * Weights[Threats];
}