More opposite castling

Bench: 3051971
snicolet · Jan 7, 2019 · 59f6ab4 · 59f6ab4
1 parent f69106f
commit 59f6ab4
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/evaluate.cpp b/src/evaluate.cpp
@@ -736,8 +736,8 @@ namespace {
   template<Tracing T>
   Score Evaluation<T>::initiative(Value eg) const {
 
-    int outflanking =  distance<File>(pos.square<KING>(WHITE), pos.square<KING>(BLACK))
-                     - distance<Rank>(pos.square<KING>(WHITE), pos.square<KING>(BLACK));
+    int outflanking =  2 * 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);