January Long Challenge 2016
Rupsa and the Game, Churu and Balls, Chef and Time Machine
February Challenge 2016
Chef and Strange Operations, Chef-Detective
March Challenge 2016
Palindromic substrings, maximize the sum, Chef And Special Dishes
April Challenge 2016
Help Watson Escape, Chef and Ballons, Chef And Coloring
June Challenge 2016
Devu and an Array, Chef and Coins Game, Chef And The Hiring Event, Chef And Binary Operation
September Challenge 2016
Chef and digits of a number, Faded Palindromes, Chef and calculation
May Challenge 2017
Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers
July Challenge 2019 Division 2
Minimum and Maximum, Chef and Mean
India