June Challenge 2015
Chef and Polygons, Chef and Memory Limit
July Challenge 2015
Bread, Na2a and lucky stone, Chef and Cube
August Challenge 2015
Cooking Machine, Aditi and Magic Trick
September Challenge 2015
Chain of Doughnuts, Count Steps in Matrix
October Challenge 2015
Spheres, Who dares to be a millionaire
May Cook-Off 2015
Devu and friendship testing
February Challenge 2016
Chef and Strange Operations, Chef-Detective
March Challenge 2016
Palindromic substrings, maximize the sum
April Challenge 2016
Chef And Coloring, Chef And Magical Path, Help Watson Escape, Chef and Ballons
May Challenge 2016
Chef and Big Soccer, Laddu
June Challenge 2016
Chef And The Hiring Event, Chef and Rectangle Array, Chef and Array and K, Chef And Binary Operation, Chef and Coins Game, Devu and an Array
July Challenge 2016
Chefland and Electricity, Chef and Tetris, Andrash and Stipendium
September Challenge 2016
Dividing Machine, Chef and digits of a number, Faded Palindromes, Chef and calculation
April Cook-Off 2016
Movie Weekend, Odd Divisors
India