Monsters trapped in pits cannot kick

src/mhitm.c

@@ -423,6 +423,8 @@ mattackm(
         case AT_TUCH:
         case AT_BUTT:
         case AT_TENT:
+            if (mattk->aatyp == AT_KICK && mtrapped_in_pit(magr))
+                    continue;
             /* Nymph that teleported away on first attack? */
             if (distmin(magr->mx, magr->my, mdef->mx, mdef->my) > 1)
                 /* Continue because the monster may have a ranged attack. */