X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fpawns.cpp;h=3aede5adfa7f111b42ddef9332e9182a5dfba8f5;hp=52bc9f88eea5eb031931cfe1aa17dce81fde575e;hb=f3728e66f856a8916a12eada7b18049034c864ca;hpb=c2c185423b13b0227c86009c6006e48e8d258896

diff --git a/src/pawns.cpp b/src/pawns.cpp
index 52bc9f88..3aede5ad 100644
--- a/src/pawns.cpp
+++ b/src/pawns.cpp
@@ -182,7 +182,7 @@ Score PawnInfoTable::evaluate_pawns(const Position& pos, Bitboard ourPawns,
       // pawn on neighboring files is higher or equal than the number of
       // enemy pawns in the forward direction on the neighboring files.
       candidate =   !(opposed | passed | backward | isolated)
-                 && (b = attack_span_mask(Them, s + pawn_push(Us)) & ourPawns) != EmptyBoardBB
+                 && (b = attack_span_mask(Them, s + pawn_push(Us)) & ourPawns) != 0
                  &&  count_1s<Max15>(b) >= count_1s<Max15>(attack_span_mask(Us, s) & theirPawns);
 
       // Passed pawns will be properly scored in evaluation because we need
@@ -223,7 +223,7 @@ Score PawnInfo::updateShelter(const Position& pos, Square ksq) {
 
   if (relative_rank(Us, ksq) <= RANK_4)
   {
-      pawns = pos.pieces(PAWN, Us) & this_and_neighboring_files_bb(ksq);
+      pawns = pos.pieces(PAWN, Us) & this_and_neighboring_files_bb(file_of(ksq));
       r = ksq & (7 << 3);
       for (int i = 0; i < 3; i++)
       {