RookOnQueenFile Removal

[stockfish] / src / evaluate.cpp

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index fe92f7d7bcd9852296db2445f457e411f4106fb0..c68577a3e0e9f492a6243302404f72f55247c2ae 100644 (file)
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -265,7 +265,6 @@ namespace {
   constexpr Score ReachableOutpost    = S( 31, 22);
   constexpr Score RestrictedPiece     = S(  7,  7);
   constexpr Score RookOnKingRing      = S( 16,  0);
-  constexpr Score RookOnQueenFile     = S(  6, 11);
   constexpr Score SliderOnQueen       = S( 60, 18);
   constexpr Score ThreatByKing        = S( 24, 89);
   constexpr Score ThreatByPawnPush    = S( 48, 39);
@@ -481,10 +480,6 @@ namespace {
 
         if (Pt == ROOK)
         {
-            // Bonus for rook on the same file as a queen
-            if (file_bb(s) & pos.pieces(QUEEN))
-                score += RookOnQueenFile;
-
             // Bonus for rook on an open or semi-open file
             if (pos.is_on_semiopen_file(Us, s))
                 score += RookOnFile[pos.is_on_semiopen_file(Them, s)];
@@ -1023,8 +1018,8 @@ Value Eval::evaluate(const Position& pos) {
   {
       // Scale and shift NNUE for compatibility with search and classical evaluation
       auto  adjusted_NNUE = [&](){
-         int mat = pos.non_pawn_material();
-         return NNUE::evaluate(pos) * (1024 + mat / 32) / 1024 + Tempo;
+         int mat = pos.non_pawn_material() + PieceValue[MG][PAWN] * pos.count<PAWN>();
+         return NNUE::evaluate(pos) * (720 + mat / 32) / 1024 + Tempo;
       };
 
       // If there is PSQ imbalance use classical eval, with small probability if it is small