September Challenge 2016
Faded Palindromes, Chef and digits of a number
October Challenge 2016
Chef and Keyboard, Fenwick Iterations, Chef and Three Dogs
January Challenge 2017
Capital Movement, Cats and Dogs, Reservior
March Challenge 2017
Bandwidth of a matrix, Bear and Extra Number, Xenny and Alternating Tasks
May Challenge 2017
Chef and his daily routine, Courses in an university, Median of adjacent maximum numbers
June Challenge 2017
A Good Set, Chef and the Feast, Xenny and Coin Rankings, Triplets, Pairwise union of sets
July Challenge 2017
Chef and Sign Sequences, IPC Trainers, Calculator , Tree Expectancy, Whats in the Name
August Long Challenge 2017
Chef and Rainbow Array, Chef and Mover, Palindromic Game, Greedy Candidates, Strings and Graphs
June Lunchtime 2017
Maximum Unique Segment, Two Numbers
March Cook-off 2018 Division 1
Chef Goes to the Cinema, Chef Restores a Matrix
August Cook-Off 2018 Division 1
GukiZ and Candies, Mixi Game
September Mega Cook-Off 2018 Division 1
OneTwo, Make a Permutation
August Lunchtime 2018 Division 1
Chef and Eid, Mix Mix Game
India