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Simplify mobility danger

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Check sign only after adding mobility danger term.

STC
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 9090 W: 2001 L: 1856 D: 5233
http://tests.stockfishchess.org/tests/view/5bdc5ee10ebc595e0ae27bc2

LTC
LLR: 2.94 (-2.94,2.94) [-3.00,1.00]
Total: 123466 W: 19766 L: 19805 D: 83895
http://tests.stockfishchess.org/tests/view/5bdc678e0ebc595e0ae27cf3

bench: 3630207
This commit is contained in:
Fabian Fichter
2018-11-02 15:24:14 +01:00
committed by Stéphane Nicolet
parent 8bb7a73708
commit a6fe035977
1 changed files with 1 additions and 4 deletions
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5
src/evaluate.cpp
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@@ -480,15 +480,12 @@ namespace {
+ 4 * tropism + 4 * tropism
- 873 * !pos.count<QUEEN>(Them) - 873 * !pos.count<QUEEN>(Them)
- 6 * mg_value(score) / 8 - 6 * mg_value(score) / 8
+ mg_value(mobility[Them] - mobility[Us])
- 30; - 30;
// Transform the kingDanger units into a Score, and subtract it from the evaluation // Transform the kingDanger units into a Score, and subtract it from the evaluation
if (kingDanger > 0) if (kingDanger > 0)
{
int mobilityDanger = mg_value(mobility[Them] - mobility[Us]);
kingDanger = std::max(0, kingDanger + mobilityDanger);
score -= make_score(kingDanger * kingDanger / 4096, kingDanger / 16); score -= make_score(kingDanger * kingDanger / 4096, kingDanger / 16);
}
} }
// Penalty when our king is on a pawnless flank // Penalty when our king is on a pawnless flank