Abb to apun ko lagne laga he ki apen he Robert he
I guess this is the effect of “CodeChef API Hackathon”.People are creating many projects related to subbmisions and ranklist this might have caused a traffic on codechef. During the September mega cook off (23/9/2018),they had removed “practice” and “discuss” from codechef.So to figure out who is human and not a bot they might have did this thing.