I have re read the article 10. IF P Albert adopts his illegitimate children they become his natural and legal children and they can succeed him.
The
article that I referred you to states:
"A law of 2 April 2002 modified article 10. Adoption is now ruled out, and the succession passes, upon death or abdication, to the direct legitimate descent of the previous prince, failing which to his siblings and their descent,..."
If that doesn't satisfy you, the English translation of the constitution (
Article 10) states:
"The succession to the throne, opened by death or abdication, takes place direct and legitimate issue of the reigning prince, by order of primogeniture with priority given to males within the same degree of kinship.
"In the absence of direct legitimate issue, the succession passes to the brothers and sisters of the reigning prince and their direct legitimate descendants, by order of primogeniture with priority given to males within the same degree of kinship...."
The 2002 constitution changes the following from the 1962 version of the constitution:
"The succession to the throne, when opened by death or abdication, takes place within the direct and legitimate descent of the reigning Prince, by primogeniture, with precedence of males within the same degree of kinship. In the absence of a legitimate descendant, the adopted child or the legitimate descendants thereof are able to succeed."
Thus the recent changes in the consitution eliminates the possibility of succession by an adopted child.
The term, direct and legitimate issue, means only the children born in a marriage.
Any interpretations of the constitution is done by the Prince or the Regency Council acting on behalf of the Prince - not the courts.