September Challenge 2016
Faded Palindromes, Chef and calculation, Chef and digits of a number
October Challenge 2016
Chef and Keyboard, Fenwick Iterations, Chef and Three Dogs
April Cook-Off 2016
Movie Weekend, Odd Divisors
January Challenge 2017
Reservior, Cats and Dogs, Capital Movement
February Challenge 2017
Chef and Triangles, Chef and His Apartment Dues
March Challenge 2017
Xenny and Alternating Tasks, Bear and Extra Number, Bandwidth of a matrix
June Challenge 2017
A Good Set, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets
July Challenge 2017
IPC Trainers, Calculator , Tree Expectancy, Chef and Sign Sequences, Whats in the Name
August Long Challenge 2017
Chef and Rainbow Array, Chef and Mover, Palindromic Game, Greedy Candidates, Strings and Graphs
September Challenge 2017
Sereja and Commands, Chef and Pick Digit, Minimum Good Permutation, Fill The Matrix, Little Chef and Sums
October Challenge 2017
Max Mex, (Challenge) Connecting computers, A Balanced Contest, Counter Test For CHEFSUM, Chef and Cycled Cycles, Chef and a great voluntary Program
July Cook-Off 2017
Chang and Bitwise OR, Chang and the Perfect Function
June Lunchtime 2017
Maximum Unique Segment, Two Numbers
January Challenge 2018
(Challenge) Chef and Palindromes, K-Concatenation, Maximum Score, Rectangle, String Merging, Partition the numbers
India