X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fsearch.cpp;h=64e9028b10bd82fd1c7bc2d77e52bb960f17048f;hp=a81c85273aa4e6325e103dcd1d7ec1afc2636054;hb=85924db496af2fb8d70b6c89b17fc8541339ca19;hpb=f2f3a06a1acfa14b3054bfd73d6c3966c326a7cc

diff --git a/src/search.cpp b/src/search.cpp
index a81c8527..64e9028b 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -65,7 +65,7 @@ namespace {
 
   // Razoring and futility margin based on depth
   const int razor_margin[4] = { 483, 570, 603, 554 };
-  Value futility_margin(Depth d) { return Value(200 * d); }
+  Value futility_margin(Depth d) { return Value(150 * d); }
 
   // Futility and reductions lookup tables, initialized at startup
   int FutilityMoveCounts[2][16];  // [improving][depth]
@@ -926,7 +926,7 @@ moves_loop: // When in check search starts from here
 
           // Futility pruning: parent node
           if (   predictedDepth < 7 * ONE_PLY
-              && ss->staticEval + futility_margin(predictedDepth) + 256 <= alpha)
+              && ss->staticEval + 256 + 200 * predictedDepth / ONE_PLY <= alpha)
               continue;
 
           // Prune moves with negative SEE at low depths and below a decreasing