Time.availableNodes = 0;
TT.clear();
Threads.clear();
+ Tablebases::init(Options["SyzygyPath"]); // Free up mapped files
}
&& pos.see_ge(move))
extension = ONE_PLY;
+ // Extension for king moves that change castling rights
+ if ( pos.can_castle(us)
+ && type_of(movedPiece) == KING
+ && depth < 12 * ONE_PLY)
+ extension = ONE_PLY;
+
// Calculate new depth for this move
newDepth = depth - ONE_PLY + extension;