November Challenge 2014
Distinct Characters Subsequence
July Challenge 2015
Bread, Na2a and lucky stone, Chef and Cube
August Challenge 2015
Gravity Guy, Cooking Machine
October Challenge 2015
Count Subarrays, Who dares to be a millionaire
November Challenge 2015
Chef and cakes, Eugene and function
December Challenge 2015
Chef and the stones, Plane Division
August Cook-Off 2015
Chef and the Wildcard Matching
January Long Challenge 2016
Rupsa and the Game, Churu and Balls, Chef and Time Machine, Devu and Perfume
February Challenge 2016
Chef-Detective, Chef and Strange Operations
March Challenge 2016
Palindromic substrings, maximize the sum, Chef And Special Dishes
April Challenge 2016
Help Watson Escape, Chef and Ballons, Chef And Magical Path, Chef And Coloring
June Challenge 2016
Chef And The Hiring Event, Chef and Array and K, Chef And Binary Operation, Chef and Coins Game, Devu and an Array
July Challenge 2016
Chef and Robots Competition, 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
February Cook-Off 2016
Puppy and Board, Puppy and Sum
March Cook-Off 2016
Digital clock, Alternating subarray prefix
India