Adjust scale param higher

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index ff7b996be5710e05ef0f0a46605e8d6f00fc8ba0..0a4b1a18d672e991d5a95b3e1e02304eecac6b3e 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -75,7 +75,8 @@ namespace {
   }
 
   constexpr int futility_move_count(bool improving, Depth depth) {
-    return (3 + depth * depth) / (2 - improving);
+    return improving ? (3 + depth * depth)
+                     : (3 + depth * depth) / 2;
   }
 
   // History and stats update bonus, based on depth