X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fsearch.cpp;h=0cd490850cdbe57007053b4ed59bdc87131ddd72;hp=7188925c0e73c2f3e2fae8d5e2c1b77e5dea2374;hb=ffd6685f791f7e980cbada45ff66243c7b1aff76;hpb=b534176d4acc15ca5d7fdf3f44d1afb4e33c899a

diff --git a/src/search.cpp b/src/search.cpp
index 7188925c..0cd49085 100644
--- a/src/search.cpp
+++ b/src/search.cpp
@@ -320,7 +320,7 @@ namespace {
     while (++depth <= MAX_PLY && !Signals.stop && (!Limits.depth || depth <= Limits.depth))
     {
         // Age out PV variability metric
-        BestMoveChanges *= 0.8;
+        BestMoveChanges *= 0.5;
 
         // Save the last iteration's scores before first PV line is searched and
         // all the move scores except the (new) PV are set to -VALUE_INFINITE.
@@ -429,11 +429,10 @@ namespace {
             if (depth > 4 && depth < 50 &&  PVSize == 1)
                 TimeMgr.pv_instability(BestMoveChanges);
 
-            // Stop the search if only one legal move is available or most
-            // of the available time has been used. We probably don't have
-            // enough time to search the first move at the next iteration anyway.
+            // Stop the search if only one legal move is available or all
+            // of the available time has been used.
             if (   RootMoves.size() == 1
-                || IterationTime > (TimeMgr.available_time() * 62) / 100)
+                || IterationTime > TimeMgr.available_time() )
                 stop = true;
 
             if (stop)
@@ -1628,9 +1627,8 @@ void check_time() {
   Time::point elapsed = Time::now() - SearchTime;
   bool stillAtFirstMove =    Signals.firstRootMove
                          && !Signals.failedLowAtRoot
-                         && (   elapsed > TimeMgr.available_time()
-                             || (   elapsed > (TimeMgr.available_time() * 62) / 100
-                                 && elapsed > IterationTime * 1.4));
+                         &&  elapsed > TimeMgr.available_time()
+                         &&  elapsed > IterationTime * 1.4;
 
   bool noMoreTime =   elapsed > TimeMgr.maximum_time() - 2 * TimerThread::Resolution
                    || stillAtFirstMove;