having rendered more years of service than the ones who are now made eligible when the length of eligible service in tribal, rural areas and regular service is reduced. The main ground of attack is on submission that the rules of the game are changed midway when NEET 2022 has already been held and results have been declared. Ordinarily, this principle of impermissibility of change of rules of the game applies in service jurisprudence and not more often in admission to professional courses. By the impugned amendment, the zone of consideration for admission to P.G. medical course under the in-service quota is increased, thereby allowing more in-service candidates to be considered for such admission. Reducing the length of eligible service would definitely encourage Doctors who serve in tribal and rural areas as they would be eligible for admission into P.G. medical course by rendering less period of service. The principles applicable to service jurisprudence would not apply in matters concerning admission to professional courses as stated above. There is no vested right in favour of the petitioners to get admission in P.G. medical course. Their only right is to be considered for selection after they put in required length of service in tribal, rural areas and regular service. In any case, petitioners’ right of such consideration has not been taken away under the impugned amendment. If some more in-service candidates/Doctors become eligible for admission, petitioners’ right is not affected.