X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fevaluate.cpp;h=51cba651d5ef0088c912c79ca8ac622ce75a1eca;hp=99c0cd6e1acd512ccc8eaa04cb8609a44f9a4cc0;hb=aa0166fba66d1bd3d2756f8f16b7f6161064d0a3;hpb=7133598a98301cf84857d39194026b876da48b96
diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 99c0cd6e..51cba651 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -18,7 +18,6 @@
along with this program. If not, see .
*/
-#include
#include
#include // For std::memset
#include
@@ -229,6 +228,8 @@ namespace {
const Square ksq = pos.square(Us);
+ Bitboard dblAttackByPawn = pawn_double_attacks_bb(pos.pieces(Us, PAWN));
+
// Find our pawns that are blocked or on the first two ranks
Bitboard b = pos.pieces(Us, PAWN) & (shift(pos.pieces()) | LowRanks);
@@ -240,7 +241,8 @@ namespace {
attackedBy[Us][KING] = pos.attacks_from(ksq);
attackedBy[Us][PAWN] = pe->pawn_attacks(Us);
attackedBy[Us][ALL_PIECES] = attackedBy[Us][KING] | attackedBy[Us][PAWN];
- attackedBy2[Us] = attackedBy[Us][KING] & attackedBy[Us][PAWN];
+ attackedBy2[Us] = (attackedBy[Us][KING] & attackedBy[Us][PAWN])
+ | dblAttackByPawn;
// Init our king safety tables
kingRing[Us] = attackedBy[Us][KING];
@@ -257,7 +259,7 @@ namespace {
kingAttacksCount[Them] = kingAttackersWeight[Them] = 0;
// Remove from kingRing[] the squares defended by two pawns
- kingRing[Us] &= ~pawn_double_attacks_bb(pos.pieces(Us, PAWN));
+ kingRing[Us] &= ~dblAttackByPawn;
}