X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=src%2Fsearch.cpp;h=8f8d42c02873f19b56abe9afe666c4109b2177ee;hb=6b9a70ace8073f5ff4c50b4dd5ddc041cf9c819f;hp=29b334ed5fb535f81fd655eee0ef253eb32d4c1e;hpb=f90274d8ce1aad4ad0595aacbceb74b6cbe306a8;p=stockfish

diff --git a/src/search.cpp b/src/search.cpp
index 29b334ed..8f8d42c0 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -66,7 +66,7 @@ namespace {
 
   // Futility margin
   Value futility_margin(Depth d, bool improving) {
-    return Value(234 * (d - improving));
+    return Value(231 * (d - improving));
   }
 
   // Reductions lookup table, initialized at startup
@@ -801,7 +801,7 @@ namespace {
         && (ss-1)->statScore < 24185
         &&  eval >= beta
         &&  eval >= ss->staticEval
-        &&  ss->staticEval >= beta - 24 * depth - 34 * improving + 162 * ss->ttPv + 159
+        &&  ss->staticEval >= beta - 22 * depth - 34 * improving + 162 * ss->ttPv + 159
         && !excludedMove
         &&  pos.non_pawn_material(us)
         && (ss->ply >= thisThread->nmpMinPly || us != thisThread->nmpColor))
@@ -1025,7 +1025,7 @@ moves_loop: // When in check, search starts from here
           else
           {
               // Continuation history based pruning (~20 Elo)
-              if (   lmrDepth < 4
+              if (   lmrDepth < 5
                   && (*contHist[0])[movedPiece][to_sq(move)] < CounterMovePruneThreshold
                   && (*contHist[1])[movedPiece][to_sq(move)] < CounterMovePruneThreshold)
                   continue;
@@ -1172,7 +1172,7 @@ moves_loop: // When in check, search starts from here
                              + (*contHist[0])[movedPiece][to_sq(move)]
                              + (*contHist[1])[movedPiece][to_sq(move)]
                              + (*contHist[3])[movedPiece][to_sq(move)]
-                             - 4741;
+                             - 4791;
 
               // Decrease/increase reduction for moves with a good/bad history (~30 Elo)
               if (!ss->inCheck)