X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fsearch.cpp;h=edc4a71a0766c79f14b092a1367cd3759a6b907a;hb=0ac44b40c9973a9033e09631bfbaf3e888af208e;hp=693bea940548f31d975db84c428d2b8273819c8a;hpb=221f41c2dffd100e8069bde7785022f4366f1e70;p=stockfish

diff --git a/src/search.cpp b/src/search.cpp
index 693bea94..edc4a71a 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -235,7 +235,7 @@ namespace {
   const Value EasyMoveMargin = Value(0x200);
 
   // Last seconds noise filtering (LSN)
-  const bool UseLSNFiltering = true;
+  const bool UseLSNFiltering = false;
   const int LSNTime = 100; // In milliseconds
   const Value LSNValue = value_from_centipawns(200);
   bool loseOnTime = false;
@@ -356,7 +356,7 @@ void init_search() {
 
   // Init futility margins array
   for (d = 0; d < 16; d++) for (mc = 0; mc < 64; mc++)
-      FutilityMarginsMatrix[d][mc] = 112 * int(log(double(d * d) / 2) / log(2.0) + 1) - 8 * mc + 45;
+      FutilityMarginsMatrix[d][mc] = 112 * int(log(double(d * d) / 2) / log(2.0) + 1.001) - 8 * mc + 45;
 
   // Init futility move count array
   for (d = 0; d < 32; d++)
@@ -1237,7 +1237,7 @@ namespace {
 
     // Step 9. Internal iterative deepening
     if (    depth >= IIDDepth[PvNode]
-        && (ttMove == MOVE_NONE || (PvNode && tte->depth() <= depth - 4 * OnePly))
+        &&  ttMove == MOVE_NONE
         && (PvNode || (!isCheck && ss->eval >= beta - IIDMargin)))
     {
         Depth d = (PvNode ? depth - 2 * OnePly : depth / 2);