X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fpawns.cpp;h=b83b780ab00f21e8228889e8ea13c358d0ce2939;hp=74b3fd5e5d9c473f32ead6551ba5163931c52562;hb=4c95edddbf1aaec22c343adaca4796df0137e4c3;hpb=16c603ce9baa464c2f59cbd001987ec3a7cbc01f

diff --git a/src/pawns.cpp b/src/pawns.cpp
index 74b3fd5e..b83b780a 100644
--- a/src/pawns.cpp
+++ b/src/pawns.cpp
@@ -124,7 +124,7 @@ namespace {
         opposed    = theirPawns & forward_bb(Us, s);
         stoppers   = theirPawns & passed_pawn_mask(Us, s);
         lever      = theirPawns & pawnAttacksBB[s];
-        doubled    = ourPawns   & forward_bb(Us, s);
+        doubled    = ourPawns   & (s + Up);
         neighbours = ourPawns   & adjacent_files_bb(f);
         phalanx    = neighbours & rank_bb(s);
         supported  = neighbours & rank_bb(s - Up);
@@ -148,9 +148,8 @@ namespace {
         }
 
         // Passed pawns will be properly scored in evaluation because we need
-        // full attack info to evaluate them. Only the frontmost passed
-        // pawn on each file is considered a true passed pawn.
-        if (!(stoppers | doubled))
+        // full attack info to evaluate them.
+        if (!stoppers && !(ourPawns & forward_bb(Us, s)))
             e->passedPawns[Us] |= s;
 
         // Score this pawn
@@ -167,15 +166,12 @@ namespace {
             score += Connected[opposed][!!phalanx][more_than_one(supported)][relative_rank(Us, s)];
 
         if (doubled)
-            score -= Doubled / distance<Rank>(s, frontmost_sq(Us, doubled));
+            score -= Doubled;
 
         if (lever)
             score += Lever[relative_rank(Us, s)];
     }
 
-    b = e->semiopenFiles[Us] ^ 0xFF;
-    e->pawnSpan[Us] = b ? int(msb(b) - lsb(b)) : 0;
-
     return score;
   }
 
@@ -219,6 +215,7 @@ Entry* probe(const Position& pos) {
   e->key = key;
   e->score = evaluate<WHITE>(pos, e) - evaluate<BLACK>(pos, e);
   e->asymmetry = popcount(e->semiopenFiles[WHITE] ^ e->semiopenFiles[BLACK]);
+  e->openFiles = popcount(e->semiopenFiles[WHITE] & e->semiopenFiles[BLACK]);
   return e;
 }