and 21-2-2002 and held that what was adopted on 30-11-2004 was only minimum marks for written examination and not for the interviews. Therefore, introduction of the requirement of minimum marks for interview, after the entire selection process (consisting of written examination and interview) was completed, would amount to changing the rules of the game after the game was played which is clearly impermissible. We are fortified in this view by several decisions of this Court. It is sufficient to refer to three of them — P.K. Ramachandra Iyer v. Union of India [(1984) 2 SCC 141 : 1984 SCC (L&S) 214] , Umesh Chandra Shukla v. Union of India [(1985) 3 SCC 721 : 1985 SCC (L&S) 919] and Durgacharan Misra v. State of Orissa [(1987) 4 SCC 646 : 1988 SCC (L&S) 36 : (1987) 5 ATC 148] 32. In Maharashtra SRTC v. Rajendra Bhimrao Mandve [(2001) 10 SCC 51 : 2002 SCC (L&S) 720] this Court observed that “the rules of the game, meaning thereby, that the criteria for selection cannot be altered by the