February Challenge 2016
Chef-Detective, Chef and Strange Operations
June Challenge 2016
Chef And The Hiring Event, Chef And Binary Operation, Chef and Coins Game, Devu and an Array
August Challenge 2016
Chef and Chocolate, Chef and Round Run
September Challenge 2016
Chef and calculation, JosephLand, Faded Palindromes, Chef and digits of a number, Dividing Machine, Chef and Friends
November Challenge 2016
Count Permutations, Chef and squares, Task for Alexey
October Cook-Off 2016
Watson asks Does Permutation Exist, ChefWatson uses Social Network
January Cook-Off 2017
Digit Longest Increasing Subsequences 2
August Long Challenge 2017
Chef and Rainbow Array, Palindromic Game
September Challenge 2017
Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
India