X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fevaluate.cpp;h=333d04aca277d0b456800017980887967d14e09d;hb=dace61600a12f3f1ad1abcb2625f4c497e8f15ba;hp=48e305efebf569bf1f672168a0f5da293fe748cf;hpb=e917bd59b1e317c6b48dc676473359fdfb86d9d4;p=stockfish

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index 48e305ef..333d04ac 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -152,25 +152,25 @@ namespace {
   };
 
   // Assorted bonuses and penalties
-  constexpr Score BishopPawns        = S(  3,  8);
-  constexpr Score CloseEnemies       = S(  7,  0);
+  constexpr Score BishopPawns        = S(  3,  7);
+  constexpr Score CloseEnemies       = S(  8,  0);
   constexpr Score CorneredBishop     = S( 50, 50);
-  constexpr Score Hanging            = S( 62, 34);
-  constexpr Score KingProtector      = S(  6,  7);
-  constexpr Score KnightOnQueen      = S( 20, 12);
-  constexpr Score LongDiagonalBishop = S( 44,  0);
-  constexpr Score MinorBehindPawn    = S( 16,  0);
-  constexpr Score PawnlessFlank      = S( 18, 94);
-  constexpr Score RestrictedPiece    = S(  7,  6);
-  constexpr Score RookOnPawn         = S( 10, 28);
-  constexpr Score SliderOnQueen      = S( 49, 21);
-  constexpr Score ThreatByKing       = S( 21, 84);
-  constexpr Score ThreatByPawnPush   = S( 48, 42);
-  constexpr Score ThreatByRank       = S( 14,  3);
-  constexpr Score ThreatBySafePawn   = S(169, 99);
-  constexpr Score TrappedRook        = S( 98,  5);
-  constexpr Score WeakQueen          = S( 51, 10);
-  constexpr Score WeakUnopposedPawn  = S( 14, 20);
+  constexpr Score Hanging            = S( 69, 36);
+  constexpr Score KingProtector      = S(  7,  8);
+  constexpr Score KnightOnQueen      = S( 16, 12);
+  constexpr Score LongDiagonalBishop = S( 45,  0);
+  constexpr Score MinorBehindPawn    = S( 18,  3);
+  constexpr Score PawnlessFlank      = S( 17, 95);
+  constexpr Score RestrictedPiece    = S(  7,  7);
+  constexpr Score RookOnPawn         = S( 10, 32);
+  constexpr Score SliderOnQueen      = S( 59, 18);
+  constexpr Score ThreatByKing       = S( 24, 89);
+  constexpr Score ThreatByPawnPush   = S( 48, 39);
+  constexpr Score ThreatByRank       = S( 13,  0);
+  constexpr Score ThreatBySafePawn   = S(173, 94);
+  constexpr Score TrappedRook        = S( 96,  4);
+  constexpr Score WeakQueen          = S( 49, 15);
+  constexpr Score WeakUnopposedPawn  = S( 12, 23);
 
 #undef S
 
@@ -274,6 +274,7 @@ namespace {
             kingRing[Us] |= shift<EAST>(kingRing[Us]);
 
         kingAttackersCount[Them] = popcount(kingRing[Us] & pe->pawn_attacks(Them));
+        kingRing[Us] &= ~double_pawn_attacks_bb<Us>(pos.pieces(Us, PAWN));
         kingAttacksCount[Them] = kingAttackersWeight[Them] = 0;
     }
   }
@@ -309,7 +310,7 @@ namespace {
         attackedBy[Us][Pt] |= b;
         attackedBy[Us][ALL_PIECES] |= b;
 
-        if (b & kingRing[Them] & ~double_pawn_attacks_bb<Them>(pos.pieces(Them, PAWN)))
+        if (b & kingRing[Them])
         {
             kingAttackersCount[Us]++;
             kingAttackersWeight[Us] += KingAttackWeights[Pt];
@@ -559,8 +560,7 @@ namespace {
 
     // Bonus for restricting their piece moves
     restricted =   attackedBy[Them][ALL_PIECES]
-                & ~attackedBy[Them][PAWN]
-                & ~attackedBy2[Them]
+                & ~stronglyProtected
                 &  attackedBy[Us][ALL_PIECES];
     score += RestrictedPiece * popcount(restricted);