March Challenge 2016
Palindromic substrings, maximize the sum
April Challenge 2017
Dish Of Life, Similar Dishes
May Challenge 2017
Courses in an university, Median of adjacent maximum numbers, Blocked websites, Chef and his daily routine, Chef and Sub Array
June Challenge 2017
A Good Set, Chef and the Feast, Xenny and Coin Rankings, Triplets
July Challenge 2017
Chef and Sign Sequences, IPC Trainers, Calculator , Whats in the Name
August Long Challenge 2017
Chef and Rainbow Array, Chef and Mover, Palindromic Game, Greedy Candidates
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
October Challenge 2018 Division 2
Minimize Digitsum, Chef and Serves, Byte to Bit
July Challenge 2019 Division 2
Minimum and Maximum, Chef and Mean
Venezuela