X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fevaluate.cpp;h=ac8bde741a385650f9a8155025fbfd99f03c5746;hp=c54b6d30bc81eed71e2582bfa7704cfc1da34739;hb=e846a9306d6108fb24cb216689867777ac2b0c4f;hpb=ba2a2c34bb3098648d6f772a4b26d84d761afe2e

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index c54b6d30..ac8bde74 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -158,7 +158,7 @@ namespace {
   constexpr Score BishopPawns        = S(  3,  7);
   constexpr Score CloseEnemies       = S(  6,  0);
   constexpr Score CorneredBishop     = S( 50, 50);
-  constexpr Score Hanging            = S( 52, 30);
+  constexpr Score Hanging            = S( 57, 32);
   constexpr Score HinderPassedPawn   = S(  8,  0);
   constexpr Score KingProtector      = S(  6,  6);
   constexpr Score KnightOnQueen      = S( 21, 11);
@@ -166,7 +166,7 @@ namespace {
   constexpr Score MinorBehindPawn    = S( 16,  0);
   constexpr Score Overload           = S( 13,  6);
   constexpr Score PawnlessFlank      = S( 19, 84);
-  constexpr Score RookOnPawn         = S(  8, 24);
+  constexpr Score RookOnPawn         = S( 10, 30);
   constexpr Score SliderOnQueen      = S( 42, 21);
   constexpr Score ThreatByKing       = S( 23, 76);
   constexpr Score ThreatByPawnPush   = S( 45, 40);
@@ -718,14 +718,14 @@ namespace {
   template<Tracing T> template<Color Us>
   Score Evaluation<T>::space() const {
 
+    if (pos.non_pawn_material() < SpaceThreshold)
+        return SCORE_ZERO;
+
     constexpr Color Them = (Us == WHITE ? BLACK : WHITE);
     constexpr Bitboard SpaceMask =
       Us == WHITE ? CenterFiles & (Rank2BB | Rank3BB | Rank4BB)
                   : CenterFiles & (Rank7BB | Rank6BB | Rank5BB);
 
-    if (pos.non_pawn_material() < SpaceThreshold)
-        return SCORE_ZERO;
-
     // Find the available squares for our pieces inside the area defined by SpaceMask
     Bitboard safe =   SpaceMask
                    & ~pos.pieces(Us, PAWN)
@@ -758,16 +758,12 @@ namespace {
     int outflanking =  distance<File>(pos.square<KING>(WHITE), pos.square<KING>(BLACK))
                      - distance<Rank>(pos.square<KING>(WHITE), pos.square<KING>(BLACK));
 
-    bool pawnsOnBothFlanks =   (pos.pieces(PAWN) & QueenSide)
-                            && (pos.pieces(PAWN) & KingSide);
-
     // Compute the initiative bonus for the attacking side
     int complexity =   8 * pe->pawn_asymmetry()
                     + 12 * pos.count<PAWN>()
                     + 12 * outflanking
-                    + 16 * pawnsOnBothFlanks
                     + 48 * !pos.non_pawn_material()
-                    -136 ;
+                    -110 ;
 
     // Now apply the bonus: note that we find the attacking side by extracting
     // the sign of the endgame value, and that we carefully cap the bonus so