October Challenge 2014
Chef and Ground, Magical Girl and Colored Liquid Potions
November Challenge 2014
Distinct Characters Subsequence
February Challenge 2015
Chef and Chain, Chef and Strange Formula, Let us play with rank list
August Challenge 2015
Aditi and Magic Trick, Cooking Machine, Gravity Guy, Way Out
September Challenge 2015
Chain of Doughnuts, Count Steps in Matrix, Bank robbery
August Cook-Off 2015
Chef and the XORed Number , Chef and the Wildcard Matching
March Challenge 2016
Palindromic substrings, Chef And Special Dishes
April Challenge 2016
Help Watson Escape, Chef And Coloring, Chef and Ballons, Chef And Magical Path
June Challenge 2016
Chef And The Hiring Event, Chef And Binary Operation, Chef and Coins Game, Devu and an Array
July Challenge 2016
Andrash and Stipendium, Chef and Robots Competition
September Challenge 2016
Chef and digits of a number, Faded Palindromes
November Challenge 2016
Task for Alexey, Chef and squares, Count Permutations
July Cook-Off 2016
Chef and Proportion, Chef and Numbers
October Cook-Off 2016
Watson asks Does Permutation Exist, ChefWatson uses Social Network
June Lunchtime 2016
Collisions, One more weird game
January Challenge 2017
Capital Movement, Reservior
February Challenge 2017
Chef and His Apartment Dues
May Challenge 2018 Division 2
Minimum Deletions, Xor Again
India