X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fevaluate.cpp;h=f18968ceb86ed5960c01acdd44084ca9256a476d;hp=652fb386683c13deeef0e82cd134f6403661b157;hb=1fd020a8ba98a95775639cdebd19e3592b767eb3;hpb=02420d4670e54f41bce5bc6d53fb437b80f9d534

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 652fb386..f18968ce 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -433,7 +433,8 @@ Value do_evaluate(const Position& pos, Value& margin) {
   template<Color Us>
   void init_eval_info(const Position& pos, EvalInfo& ei) {
 
-    const Color Them = (Us == WHITE ? BLACK : WHITE);
+    const Color  Them = (Us == WHITE ? BLACK : WHITE);
+    const Square Down = (Us == WHITE ? DELTA_S : DELTA_N);
 
     Bitboard b = ei.attackedBy[Them][KING] = pos.attacks_from<KING>(pos.king_square(Them));
     ei.attackedBy[Us][PAWN] = ei.pi->pawn_attacks(Us);
@@ -442,7 +443,7 @@ Value do_evaluate(const Position& pos, Value& margin) {
     if (   pos.piece_count(Us, QUEEN)
         && pos.non_pawn_material(Us) > QueenValueMg + PawnValueMg)
     {
-        ei.kingRing[Them] = (b | (Us == WHITE ? b >> 8 : b << 8));
+        ei.kingRing[Them] = b | shift_bb<Down>(b);
         b &= ei.attackedBy[Us][PAWN];
         ei.kingAttackersCount[Us] = b ? popcount<Max15>(b) / 2 : 0;
         ei.kingAdjacentZoneAttacksCount[Us] = ei.kingAttackersWeight[Us] = 0;