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Simplify condition for ThreatByRook 

Remove stronglyProtected Queen for ThreatByRook. Idea is that in the
current master the  SliderOnQueen bonus and the see_ge() function do
something similar as ThreatByRook for Queen, so this patch removes
some redundancy, in that sense.

STC:
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 21878 W: 4939 L: 4818 D: 12121
http://tests.stockfishchess.org/tests/view/5b53a83b0ebc5902bdb815d1

LTC:
LLR: 2.95 (-2.94,2.94) [-3.00,1.00]
Total: 35307 W: 5979 L: 5882 D: 23446
http://tests.stockfishchess.org/tests/view/5b53b60b0ebc5902bdb8174c

Close https://github.com/official-stockfish/Stockfish/pull/1690

Bench: 4834554
pull/1692/head^2
Goodkov Vasiliy Aleksandrovich 2018-07-23 00:02:37 +02:00 committed by Stéphane Nicolet
parent af1ddfd83b
commit 0d5fe2f156
1 changed files with 2 additions and 2 deletions
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4
src/evaluate.cpp
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@ -542,7 +542,7 @@ namespace {
score += ThreatByRank * (int)relative_rank(Them, s);
}
b = (pos.pieces(Them, QUEEN) | weak) & attackedBy[Us][ROOK];
b = weak & attackedBy[Us][ROOK];
while (b)
{
Square s = pop_lsb(&b);
@ -557,7 +557,7 @@ namespace {
score += Hanging * popcount(weak & ~attackedBy[Them][ALL_PIECES]);
b = weak & nonPawnEnemies & attackedBy[Them][ALL_PIECES];
b = weak & nonPawnEnemies & attackedBy[Them][ALL_PIECES];
score += Overload * popcount(b);
}