X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fevaluate.cpp;h=8d7976d577340842a736b1e94abdddc7a8827d54;hp=be39f8a7b314019333a55cf27175fa2f3ac303a7;hb=1d3efff47274bd03d4deced8d7ba0360bd1dba8a;hpb=39437f4e55aaa26ef9f0d5a1c762e560e9ffde32

diff --git a/src/evaluate.cpp b/src/evaluate.cpp
index be39f8a7..8d7976d5 100644
--- a/src/evaluate.cpp
+++ b/src/evaluate.cpp
@@ -168,7 +168,7 @@ namespace {
     template<Color Us> Score passed() const;
     template<Color Us> Score space() const;
     ScaleFactor scale_factor(Value eg) const;
-    Score initiative(Score score, Score materialScore) const;
+    Score initiative(Score score) const;
 
     const Position& pos;
     Material::Entry* me;
@@ -696,7 +696,7 @@ namespace {
   // known attacking/defending status of the players.
 
   template<Tracing T>
-  Score Evaluation<T>::initiative(Score score, Score materialScore) const {
+  Score Evaluation<T>::initiative(Score score) const {
 
     int outflanking =  distance<File>(pos.square<KING>(WHITE), pos.square<KING>(BLACK))
                      - distance<Rank>(pos.square<KING>(WHITE), pos.square<KING>(BLACK));
@@ -722,7 +722,7 @@ namespace {
                     - 100 ;
 
     // Give more importance to non-material score
-    score = (score * 2 - materialScore) / 2;
+    score = score - pos.psq_score() / 2;
     Value mg = mg_value(score);
     Value eg = eg_value(score);
 
@@ -794,9 +794,6 @@ namespace {
     if (abs(v) > LazyThreshold + pos.non_pawn_material() / 64)
        return pos.side_to_move() == WHITE ? v : -v;
 
-    // Remember this score
-    Score materialScore = score;
-
     // Main evaluation begins here
 
     initialize<WHITE>();
@@ -815,7 +812,7 @@ namespace {
             + passed< WHITE>() - passed< BLACK>()
             + space<  WHITE>() - space<  BLACK>();
 
-    score += initiative(score, materialScore);
+    score += initiative(score);
 
     // Interpolate between a middlegame and a (scaled by 'sf') endgame score
     ScaleFactor sf = scale_factor(eg_value(score));