tweak.

bench 4628589
Vizvezdenec · Oct 10, 2018 · bd29334 · bd29334
1 parent 8141bdd
commit bd29334
Showing 1 changed file with 3 additions and 2 deletions.
diff --git a/src/evaluate.cpp b/src/evaluate.cpp
@@ -94,7 +94,8 @@ namespace {
   // Penalties for enemy's safe checks
   constexpr int QueenSafeCheck  = 780;
   constexpr int RookSafeCheck   = 880;
-  constexpr int BishopSafeCheck = 435;
+  constexpr int BishopSafeCheck = -100;
+  constexpr int BishopSafeCheck2 = 535;
   constexpr int KnightSafeCheck = 790;
 
 #define S(mg, eg) make_score(mg, eg)
@@ -458,7 +459,7 @@ namespace {
 
         // Enemy bishops checks
         if (b2 & safe)
-            kingDanger += BishopSafeCheck;
+            kingDanger += BishopSafeCheck + BishopSafeCheck2 * popcount (b2 & safe);
         else
             unsafeChecks |= b2;