X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fevaluate.cpp;h=51cba651d5ef0088c912c79ca8ac622ce75a1eca;hp=deb8211ab7d5d86d3f214f0b9e5f11231d786ee6;hb=aa0166fba66d1bd3d2756f8f16b7f6161064d0a3;hpb=c8589903777b6e0289640b43fae966ded442af48

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index deb8211a..51cba651 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -228,6 +228,8 @@ namespace {
 
     const Square ksq = pos.square<KING>(Us);
 
+    Bitboard dblAttackByPawn = pawn_double_attacks_bb<Us>(pos.pieces(Us, PAWN));
+
     // Find our pawns that are blocked or on the first two ranks
     Bitboard b = pos.pieces(Us, PAWN) & (shift<Down>(pos.pieces()) | LowRanks);
 
@@ -239,7 +241,8 @@ namespace {
     attackedBy[Us][KING] = pos.attacks_from<KING>(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];
@@ -256,7 +259,7 @@ namespace {
     kingAttacksCount[Them] = kingAttackersWeight[Them] = 0;
 
     // Remove from kingRing[] the squares defended by two pawns
-    kingRing[Us] &= ~pawn_double_attacks_bb<Us>(pos.pieces(Us, PAWN));
+    kingRing[Us] &= ~dblAttackByPawn;
   }