Remove 4*IncrementalFutilityMargin from futilityValue

Signed-off-by: Marco Costalba <mcostalba@gmail.com>

diff --git a/src/search.cpp b/src/search.cpp
index b6029e0..faac36c 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -1473,8 +1473,7 @@ namespace {
           {
               if (futilityValue == VALUE_NONE)
                   futilityValue =  evaluate(pos, ei, threadID)
-                                 + 64*(1+bitScanReverse32(int(depth) * int(depth)))
-                                 + 4*IncrementalFutilityMargin;
+                                 + 64*(1+bitScanReverse32(int(depth) * int(depth)));
 
               futilityValueScaled = futilityValue - moveCount * IncrementalFutilityMargin;