X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fevaluate.cpp;h=3dbd6dc03a8db98b1da7501432296f99187d00a4;hp=9584c0ed94184b9ab941fa6773f65fef2f55020d;hb=4ede49cd850392f28bc9da9537c111d2c3f0b297;hpb=b2fadf32aa57012f2140bc32d5f2433efae3e730

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 9584c0ed..3dbd6dc0 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -554,7 +554,7 @@ Value do_evaluate(const Position& pos, Value& margin) {
             if (ei.pi->semiopen(Us, file_of(s)))
                 score += ei.pi->semiopen(Them, file_of(s)) ? RookOpenFile : RookSemiopenFile;
 
-            if (mob > 6 || ei.pi->semiopen(Us, file_of(s)))
+            if (mob > 3 || ei.pi->semiopen(Us, file_of(s)))
                 continue;
 
             Square ksq = pos.king_square(Us);
@@ -821,7 +821,8 @@ Value do_evaluate(const Position& pos, Value& margin) {
                 // If there is an enemy rook or queen attacking the pawn from behind,
                 // add all X-ray attacks by the rook or queen. Otherwise consider only
                 // the squares in the pawn's path attacked or occupied by the enemy.
-                if (forward_bb(Them, s) & pos.pieces(Them, ROOK, QUEEN) & pos.attacks_from<ROOK>(s))
+                if (   (forward_bb(Them, s) & pos.pieces(Them, ROOK, QUEEN)) // Unlikely
+                    && (forward_bb(Them, s) & pos.pieces(Them, ROOK, QUEEN) & pos.attacks_from<ROOK>(s)))
                     unsafeSquares = squaresToQueen;
                 else
                     unsafeSquares = squaresToQueen & (ei.attackedBy[Them][ALL_PIECES] | pos.pieces(Them));
@@ -989,7 +990,7 @@ Value do_evaluate(const Position& pos, Value& margin) {
             // black pawns: a4, b4 white: b2 then pawn in b4 is giving support.
             if (!opposed)
             {
-                b2 = supporters & in_front_bb(winnerSide, blockSq + pawn_push(winnerSide));
+                b2 = supporters & in_front_bb(winnerSide, rank_of(blockSq + pawn_push(winnerSide)));
 
                 while (b2) // This while-loop could be replaced with LSB/MSB (depending on color)
                 {
@@ -1141,7 +1142,7 @@ Value do_evaluate(const Position& pos, Value& margin) {
 
     stream.str("");
     stream << std::showpoint << std::showpos << std::fixed << std::setprecision(2);
-    memset(scores, 0, 2 * (TOTAL + 1) * sizeof(Score));
+    std::memset(scores, 0, 2 * (TOTAL + 1) * sizeof(Score));
 
     Value margin;
     do_evaluate<true>(pos, margin);