consolidate king proximity bonuses.

protonspring · Sep 13, 2018 · 0563aca · 0563aca
1 parent 0fa957c
commit 0563aca
Showing 1 changed file with 1 addition and 5 deletions.
diff --git a/src/evaluate.cpp b/src/evaluate.cpp
@@ -652,11 +652,7 @@ namespace {
 
             // Adjust bonus based on the king's proximity
             bonus += make_score(0, (  king_proximity(Them, blockSq) * 5
-                                    - king_proximity(Us,   blockSq) * 2) * w);
-
-            // If blockSq is not the queening square then consider also a second push
-            if (r != RANK_7)
-                bonus -= make_score(0, king_proximity(Us, blockSq + Up) * w);
+                                    - king_proximity(Us,   blockSq) * (RANK_8-r)) * w);
 
             // If the pawn is free to advance, then increase the bonus
             if (pos.empty(blockSq))