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Tweak RestrictedPiece bonus

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Double the "RestrictedPiece" bonus for restricted moves targeting
occupied squares.

STC LLR: 3.58 (-2.94,2.94) {-1.00,3.00}
    Total: 25504 W: 4887 L: 4697 D: 15920
    Ptnml(0-2): 387, 2935, 5947, 3051, 422
    https://tests.stockfishchess.org/tests/view/5e2aa15dab2d69d58394f94d

LTC LLR: 2.94 (-2.94,2.94) {0.00,2.00}
    Total: 28572 W: 3826 L: 3621 D: 21125
    Ptnml(0-2): 224, 2609, 8403, 2791, 239
    https://tests.stockfishchess.org/tests/view/5e2ae7f4ab2d69d58394f9a6

Bench: 4719086
This commit is contained in:
Lolligerhans
2020-01-24 23:04:35 +01:00
parent 01b6088af3
commit 0ae00454ba
1 changed files with 2 additions and 2 deletions
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4
src/evaluate.cpp
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@@ -520,11 +520,11 @@ namespace {
} }
// Bonus for restricting their piece moves // Bonus for restricting their piece moves
// Greater bonus when landing square is occupied
b = attackedBy[Them][ALL_PIECES] b = attackedBy[Them][ALL_PIECES]
& ~stronglyProtected & ~stronglyProtected
& attackedBy[Us][ALL_PIECES]; & attackedBy[Us][ALL_PIECES];
score += RestrictedPiece * (popcount(b) + popcount(b & pos.pieces()));
score += RestrictedPiece * popcount(b);
// Protected or unattacked squares // Protected or unattacked squares
safe = ~attackedBy[Them][ALL_PIECES] | attackedBy[Us][ALL_PIECES]; safe = ~attackedBy[Them][ALL_PIECES] | attackedBy[Us][ALL_PIECES];