April Challenge 2017
Dish Of Life, Bear and Row 01, Similar Dishes
May Challenge 2017
Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers
June Challenge 2017
Chef and Prime Queries, Pairwise union of sets, Triplets, Xenny and Coin Rankings, Chef and the Feast, A Good Set
July Challenge 2017
Whats in the Name, IPC Trainers, Calculator , Tree Expectancy, Chef and Sign Sequences
August Long Challenge 2017
Chef and Rainbow Array, Chef And Fibonacci Array, Chef and Mover, Palindromic Game, Greedy Candidates
September Challenge 2017
Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Fill The Matrix, Little Chef and Sums
October Challenge 2017
Chef and a great voluntary Program, (Challenge) Connecting computers, A Balanced Contest, Counter Test For CHEFSUM, Shooting on the array, Chef and Cycled Cycles, Chef and Magic Arrays, Max Mex
August Lunchtime 2017
Mathison and the Dynamo shuffle, Mathison and pangrams
January Challenge 2018
(Challenge) Chef and Palindromes, K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers
May Challenge 2018 Division 2
Change the Signs, Dibs on Fibs, Fake Binary Search, Xor Again, Minimum Deletions, Mighty Friend
June Challenge 2018 Division 2
Two Flowers, Vision, Sheokand and String, Binary Shuffle, Naive Chef
October Challenge 2018 Division 1
Appy and Balloons , Beautiful Bricks, Minimize Digitsum, Chef and Surprise Chessboard
India