X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fsearch.cpp;h=3529627fd4d946949c9794b487f6c7eea44b25c8;hp=2fe6a5c1f68322cf8a28790c64bda74831ca965e;hb=d99a95df29574634146ec04a20726829681b2e23;hpb=0da1d6a84612c8443b3e3c9b3f74890635ce23e2;ds=sidebyside

diff --git a/src/search.cpp b/src/search.cpp
index 2fe6a5c1..3529627f 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -2195,15 +2195,18 @@ namespace {
     if (mateThreat)
         result += MateThreatExtension[pvNode];
 
-    if (pos.move_is_pawn_push_to_7th(m))
+    if (pos.type_of_piece_on(move_from(m)) == PAWN)
     {
-        result += PawnPushTo7thExtension[pvNode];
-        *dangerous = true;
-    }
-    if (pos.move_is_passed_pawn_push(m))
-    {
-        result += PassedPawnExtension[pvNode];
-        *dangerous = true;
+        if (pos.move_is_pawn_push_to_7th(m))
+        {
+            result += PawnPushTo7thExtension[pvNode];
+            *dangerous = true;
+        }
+        if (pos.move_is_passed_pawn_push(m))
+        {
+            result += PassedPawnExtension[pvNode];
+            *dangerous = true;
+        }
     }
 
     if (   pos.move_is_capture(m)