X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fpawns.cpp;h=c5fda17221deebb0086b8cece72ab8308908a10a;hb=849b089a63cb40833006704fb6e3fc66e8010dfa;hp=fece246b1c999a31611a8b8661b4e97d8e9520e2;hpb=aecdbfc4a000c72fcc2642f54ce83967913a16ba;p=stockfish

diff --git a/src/pawns.cpp b/src/pawns.cpp
index fece246b..c5fda172 100644
--- a/src/pawns.cpp
+++ b/src/pawns.cpp
@@ -229,11 +229,11 @@ Value Entry::shelter_storm(const Position& pos, Square ksq) {
   for (int f = kf - 1; f <= kf + 1; f++)
   {
       b = ourPawns & FileBB[f];
-      rkUs = b ? relative_rank(Us, lsb(Us, b)) : RANK_1;
+      rkUs = b ? relative_rank(Us, backmost_sq(Us, b)) : RANK_1;
       safety -= ShelterWeakness[rkUs];
 
       b  = theirPawns & FileBB[f];
-      rkThem = b ? relative_rank(Us, lsb(Us, b)) : RANK_1;
+      rkThem = b ? relative_rank(Us, frontmost_sq(Them, b)) : RANK_1;
       safety -= StormDanger[rkUs == RANK_1 ? 0 : rkThem == rkUs + 1 ? 2 : 1][rkThem];
   }