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Scale lazy threshold according to material. (#2170)

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STC
LLR: 2.95 (-2.94,2.94) [0.50,4.50]
Total: 58543 W: 13238 L: 12782 D: 32523
http://tests.stockfishchess.org/tests/view/5cef3efa0ebc5925cf081f07

LTC
LLR: 3.70 (-2.94,2.94) [0.00,3.50]
Total: 82232 W: 14281 L: 13825 D: 54126
http://tests.stockfishchess.org/tests/view/5cef595d0ebc5925cf082441

bench 3807737
This commit is contained in:
protonspring 2019-05-31 06:35:39 -06:00 • committed by Marco Costalba
parent c645587270
commit 3edf0e6b37
1 changed files with 2 additions and 2 deletions
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4
src/evaluate.cpp
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@ -74,7 +74,7 @@ using namespace Trace;
namespace { namespace {
// Threshold for lazy and space evaluation // Threshold for lazy and space evaluation
constexpr Value LazyThreshold = Value(1500); constexpr Value LazyThreshold = Value(1400);
constexpr Value SpaceThreshold = Value(12222); constexpr Value SpaceThreshold = Value(12222);
// KingAttackWeights[PieceType] contains king attack weights by piece type // KingAttackWeights[PieceType] contains king attack weights by piece type
@ -813,7 +813,7 @@ namespace {
// Early exit if score is high // Early exit if score is high
Value v = (mg_value(score) + eg_value(score)) / 2; Value v = (mg_value(score) + eg_value(score)) / 2;
if (abs(v) > LazyThreshold) if (abs(v) > (LazyThreshold + pos.non_pawn_material() / 64))
return pos.side_to_move() == WHITE ? v : -v; return pos.side_to_move() == WHITE ? v : -v;
// Main evaluation begins here // Main evaluation begins here