stop = true;
// Stop search early if one move seems to be much better than others
- if ( depth >= 10
+ if ( depth >= 12
&& !stop
- && ( bestMoveNeverChanged
+ && ( (bestMoveNeverChanged && pos.captured_piece_type())
|| elapsed_time() > (TimeMgr.available_time() * 40) / 100))
{
Value rBeta = bestValue - EasyMoveMargin;
(ss+1)->excludedMove = RootMoves[0].pv[0];
(ss+1)->skipNullMove = true;
- Value v = search<NonPV>(pos, ss+1, rBeta - 1, rBeta, (depth * ONE_PLY) / 2);
+ Value v = search<NonPV>(pos, ss+1, rBeta - 1, rBeta, (depth - 3) * ONE_PLY);
(ss+1)->skipNullMove = false;
(ss+1)->excludedMove = MOVE_NONE;
if ( (move = (ss-1)->currentMove) != MOVE_NULL
&& (ss-1)->eval != VALUE_NONE
&& ss->eval != VALUE_NONE
- && pos.captured_piece_type() == NO_PIECE_TYPE
+ && !pos.captured_piece_type()
&& !is_special(move))
{
Square to = to_sq(move);