Tweak time management

[stockfish] / src / timeman.cpp

diff --git a/src/timeman.cpp b/src/timeman.cpp
index 035fe33511db8669f5a2b4634bd92af5fb5ecc22..f6ead0b2a7acf18b8a076c04a5138b428aad52a7 100644 (file)
--- a/src/timeman.cpp
+++ b/src/timeman.cpp
@@ -33,8 +33,8 @@ namespace {
   enum TimeType { OptimumTime, MaxTime };
 
   const int MoveHorizon   = 50;   // Plan time management at most this many moves ahead
-  const double MaxRatio   = 7.09; // When in trouble, we can step over reserved time with this ratio
-  const double StealRatio = 0.35; // However we must not steal time from remaining moves over this ratio
+  const double MaxRatio   = 7.3; // When in trouble, we can step over reserved time with this ratio
+  const double StealRatio = 0.34; // However we must not steal time from remaining moves over this ratio
 
 
   // move_importance() is a skew-logistic function based on naive statistical
@@ -44,9 +44,9 @@ namespace {
 
   double move_importance(int ply) {
 
-    const double XScale = 7.64;
-    const double XShift = 58.4;
-    const double Skew   = 0.183;
+    const double XScale = 6.85;
+    const double XShift = 64.5;
+    const double Skew   = 0.171;
 
     return pow((1 + exp((ply - XShift) / XScale)), -Skew) + DBL_MIN; // Ensure non-zero
   }