X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fpawns.cpp;h=98e13f8373af1b8d6d9827d1f4ea667027d40a8d;hb=8a9c298deeee372251d95c867f877a7ac3a7c3fb;hp=212f0a2866e5f52695f6cb75d2caa78548657190;hpb=f1088c98228ff5b992d6cdadfc678d36bf44f41b;p=stockfish

diff --git a/src/pawns.cpp b/src/pawns.cpp
index 212f0a28..98e13f83 100644
--- a/src/pawns.cpp
+++ b/src/pawns.cpp
@@ -32,9 +32,9 @@ namespace {
   #define S(mg, eg) make_score(mg, eg)
 
   // Pawn penalties
- constexpr Score Isolated = S( 5, 15);
- constexpr Score Backward = S( 9, 24);
- constexpr Score Doubled  = S(11, 56);
+  constexpr Score Backward = S( 9, 24);
+  constexpr Score Doubled  = S(11, 56);
+  constexpr Score Isolated = S( 5, 15);
 
   // Connected pawn bonus by opposed, phalanx, #support and rank
   Score Connected[2][2][3][RANK_NB];
@@ -42,10 +42,10 @@ namespace {
   // Strength of pawn shelter for our king by [distance from edge][rank].
   // RANK_1 = 0 is used for files where we have no pawn, or pawn is behind our king.
   constexpr Value ShelterStrength[int(FILE_NB) / 2][RANK_NB] = {
-    { V( -3), V( 81), V( 93), V( 58), V( 39), V( 18), V(  25) },
-    { V(-40), V( 61), V( 35), V(-49), V(-29), V(-11), V( -63) },
-    { V( -7), V( 75), V( 23), V( -2), V( 32), V(  3), V( -45) },
-    { V(-36), V(-13), V(-29), V(-52), V(-48), V(-67), V(-166) }
+    { V( -6), V( 81), V( 93), V( 58), V( 39), V( 18), V(  25) },
+    { V(-43), V( 61), V( 35), V(-49), V(-29), V(-11), V( -63) },
+    { V(-10), V( 75), V( 23), V( -2), V( 32), V(  3), V( -45) },
+    { V(-39), V(-13), V(-29), V(-52), V(-48), V(-67), V(-166) }
   };
 
   // Danger of enemy pawns moving toward our king by [distance from edge][rank].
@@ -211,10 +211,8 @@ Value Entry::evaluate_shelter(const Position& pos, Square ksq) {
   Bitboard ourPawns = b & pos.pieces(Us);
   Bitboard theirPawns = b & pos.pieces(Them);
 
-  Value safety = (ourPawns & file_bb(ksq)) ? Value(5) : Value(-5);
-
-  if (shift<Down>(theirPawns) & (FileABB | FileHBB) & BlockRanks & ksq)
-      safety += Value(374);
+  Value safety = (shift<Down>(theirPawns) & (FileABB | FileHBB) & BlockRanks & ksq) ?
+                 Value(374) : Value(5);
 
   File center = std::max(FILE_B, std::min(FILE_G, file_of(ksq)));
   for (File f = File(center - 1); f <= File(center + 1); ++f)
@@ -239,30 +237,31 @@ Value Entry::evaluate_shelter(const Position& pos, Square ksq) {
 /// when king square changes, which is about 20% of total king_safety() calls.
 
 template<Color Us>
-Score Entry::do_king_safety(const Position& pos, Square ksq) {
+Score Entry::do_king_safety(const Position& pos) {
 
+  Square ksq = pos.square<KING>(Us);
   kingSquares[Us] = ksq;
   castlingRights[Us] = pos.can_castle(Us);
   int minKingPawnDistance = 0;
 
   Bitboard pawns = pos.pieces(Us, PAWN);
   if (pawns)
-      while (!(DistanceRingBB[ksq][minKingPawnDistance++] & pawns)) {}
+      while (!(DistanceRingBB[ksq][++minKingPawnDistance] & pawns)) {}
 
   Value bonus = evaluate_shelter<Us>(pos, ksq);
 
   // If we can castle use the bonus after the castling if it is bigger
-  if (pos.can_castle(MakeCastling<Us, KING_SIDE>::right))
+  if (pos.can_castle(Us | KING_SIDE))
       bonus = std::max(bonus, evaluate_shelter<Us>(pos, relative_square(Us, SQ_G1)));
 
-  if (pos.can_castle(MakeCastling<Us, QUEEN_SIDE>::right))
+  if (pos.can_castle(Us | QUEEN_SIDE))
       bonus = std::max(bonus, evaluate_shelter<Us>(pos, relative_square(Us, SQ_C1)));
 
   return make_score(bonus, -16 * minKingPawnDistance);
 }
 
 // Explicit template instantiation
-template Score Entry::do_king_safety<WHITE>(const Position& pos, Square ksq);
-template Score Entry::do_king_safety<BLACK>(const Position& pos, Square ksq);
+template Score Entry::do_king_safety<WHITE>(const Position& pos);
+template Score Entry::do_king_safety<BLACK>(const Position& pos);
 
 } // namespace Pawns