Further tweak movecount pruning

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index 9143f6699192ba8ac9899dd6292081e947a67889..72abae26a9d286f829fdfc9f2ac7053b14525cd2 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -153,9 +153,8 @@ void Search::init() {
   // Init futility move count array
   for (d = 0; d < 32; d++)
   {
-      FutilityMoveCounts[1][d] = int(3.001 + 0.3 * pow(double(d), 1.8));
-      FutilityMoveCounts[0][d] = d < 5 ? FutilityMoveCounts[1][d]
-                                       : 3 * FutilityMoveCounts[1][d] / 4;
+      FutilityMoveCounts[0][d] = int(3.001 + 0.3 * pow(double(d       ), 1.8)) * (d < 5 ? 4 : 3) / 4;
+      FutilityMoveCounts[1][d] = int(3.001 + 0.3 * pow(double(d + 0.98), 1.8));
   }
 }