March Challenge 2016
maximize the sum, Palindromic substrings, Chef And Special Dishes
April Challenge 2016
Help Watson Escape, Chef and Ballons, Chef And Magical Path, Chef And Coloring
June Challenge 2016
Devu and an Array, Chef and Coins Game, Chef And Binary Operation, Chef and Array and K, Chef And The Hiring Event
August Challenge 2016
Chef and Chocolate, Chef and Round Run
September Challenge 2016
Chef and digits of a number, Faded Palindromes
October Challenge 2016
Chef and Keyboard, Fenwick Iterations, Chef and Three Dogs
November Challenge 2016
Task for Alexey, Chef and squares, Count Permutations, Gift and Chef
July Cook-Off 2016
Chef and Proportion, Chef and Numbers
October Cook-Off 2016
Watson asks Does Permutation Exist, ChefWatson uses Social Network
February Challenge 2017
Chef and Triangles, Chef and His Apartment Dues, Most Frequent Element, Gerrymander
June Challenge 2017
A Good Set, Pairwise union of sets, Triplets, Xenny and Coin Rankings, Chef and the Feast
September Challenge 2017
Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
June Challenge 2018 Division 2
Binary Shuffle, Naive Chef
India