X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fpawns.cpp;h=95d5fb4cfeb5af4da52552430224b3622470d3cc;hp=17a96670911dc414b351ca7f2197dada32a510a7;hb=69ec09bd4b5bdf61f3f49f12d88224e1d656020c;hpb=25296547d0258f8519b7614e4474bbc947eaea04

diff --git a/src/pawns.cpp b/src/pawns.cpp
index 17a96670..95d5fb4c 100644
--- a/src/pawns.cpp
+++ b/src/pawns.cpp
@@ -163,6 +163,13 @@ namespace {
             && popcount(phalanx)   >= popcount(leverPush))
             e->passedPawns[Us] |= s;
 
+        else if (    stoppers == SquareBB[s + Up]
+                 &&  relative_rank(Us, s) >= RANK_5
+                 && (b = (shift<Up>(supported) & ~theirPawns)))
+            while(b)
+                if(!more_than_one(theirPawns & PawnAttacks[Us][pop_lsb(&b)]))
+                    e->passedPawns[Us] |= s;
+
         // Score this pawn
         if (!neighbours)
             score -= Isolated[opposed];