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.
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)
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;