/// <summary>
/// Define depth according to number of soldiers on board
/// </summary>
/// <param name="board"></param>
/// <returns></returns>
public int DefineDepth(Board board)
{
int num = board.NumOfSolOnBoard();
if (num > 16)
return 6;
else if (num < 16 && num > 8)
return 8;
else return 12;
}
