March Challenge 2016
maximize the sum, Palindromic substrings, Chef And Special Dishes
April Challenge 2016
Chef and Ballons, Chef And Magical Path, Chef And Coloring
June Challenge 2016
Chef And The Hiring Event, Chef And Binary Operation, Chef and Coins Game, Devu and an Array
March Cook-Off 2016
Alternating subarray prefix, Digital clock
July Cook-Off 2016
Chef and Proportion, Chef and Numbers
June Lunchtime 2016
Collisions, One more weird game
July Lunchtime 2016
Lumpy - The Bus Driver, Drumpf for President!
March Challenge 2017
Xenny and Alternating Tasks, Bear and Extra Number
October Challenge 2017
Chef and a great voluntary Program, Max Mex, Counter Test For CHEFSUM, A Balanced Contest
November Challenge 2017
Chef Hates Palindromes, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
March Challenge 2018 DIV 2
Chef and Easy Problem, A Big Sale, Mix the Colors, Chef and Glove, Minion Chef and Bananas
April Challenge 2018 Division 2
Weight of Numbers, Count Good Prefixes, Average of Pairs, Workers
October Challenge 2018 Division 2
Appy and Balloons , Chef and Serves, Byte to Bit
India