July Challenge 2017
Whats in the Name, Calculator , Chef and Sign Sequences
August Long Challenge 2017
Palindromic Game, Greedy Candidates
September Challenge 2017
Chef and Pick Digit, Minimum Good Permutation, Little Chef and Sums
October Challenge 2017
Counter Test For CHEFSUM, A Balanced Contest, Max Mex, Chef and Cycled Cycles, Chef and a great voluntary Program
November Challenge 2017
Chef Hates Palindromes, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
December Challenge 2017
Total Diamonds, Chef And his Cake, Chef and Hamming Distance of arrays
January Challenge 2018
Partition the numbers, String Merging, Maximum Score, K-Concatenation, Rectangle
March Challenge 2018 DIV 2
Chef and Easy Problem, A Big Sale, Mix the Colors, Chef and Glove, Minions and Voting, Minion Chef and Bananas
April Challenge 2018 Division 1
Cutting Plants, Highway Crossing, Count Good Prefixes
November Challenge 2018 Division 1
Appy Loves One, Magician versus Chef 2, Good Median
Insomnia 2018 (Rated)
Split Sums, Strange Swaps
August Challenge 2019 Division 2
Guddu and his Mother, Dilemma, Football, Distribute Apples, Zombie and the Caves
September Challenge 2019 Division 2
Chef and Good Subsequences, Easy Fibonacci, Chef Designed a Network, Chef and Interesting Subsequences
India