Smooth out doDeeperSearch

[stockfish] / src / search.cpp

diff --git a/src/search.cpp b/src/search.cpp
index a76297177427361f1e3a6034f63c884979ef1bb4..32a6ae611d57576a8ebff679f694c9ddde88a0ef 100644 (file)
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -550,7 +550,7 @@ namespace {
     if (   ss->ply > 10
         && search_explosion(thisThread) == MUST_CALM_DOWN
         && depth > (ss-1)->depth)
-       depth = (ss-1)->depth;
+        depth = (ss-1)->depth;
 
     constexpr bool PvNode = nodeType != NonPV;
     constexpr bool rootNode = nodeType == Root;
@@ -1212,7 +1212,7 @@ moves_loop: // When in check, search starts here
 
           // If the son is reduced and fails high it will be re-searched at full depth
           doFullDepthSearch = value > alpha && d < newDepth;
-          doDeeperSearch = value > alpha + 88;
+          doDeeperSearch = value > (alpha + 62 + 20 * (newDepth - d));
           didLMR = true;
       }
       else
@@ -1280,7 +1280,7 @@ moves_loop: // When in check, search starts here
                   rm.pv.push_back(*m);
 
               // We record how often the best move has been changed in each iteration.
-              // This information is used for time management and LMR. In MultiPV mode,
+              // This information is used for time management. In MultiPV mode,
               // we must take care to only do this for the first PV line.
               if (   moveCount > 1
                   && !thisThread->pvIdx)