May Challenge 2017
Courses in an university, Chef and his daily routine
August Long Challenge 2017
Chef And Fibonacci Array, Chef and Mover, Palindromic Game, Greedy Candidates, Chef and Rainbow Array
November Challenge 2017
Chef Hates Palindromes, Chef goes Left Right Left, Periodic Palindrome Construction, Villages and Tribes
August Cook-Off 2017
Real obtuse, From heaven to earth
September Cook-Off 2017
Infinite OR Game, Statistics Construction, Subsequence Equality
October Cook-Off 2017
Chef and Employment Test, Chef and Weird Queries
March Challenge 2018 DIV 2
A Big Sale, Mix the Colors, Chef and Glove
March Cook-off 2018 Division 2
Chef Goes to the Cinema, Chef Restores a Matrix, Chef Judges a Competition
November Cook-Off 2018 Division 2
Truth and Dare, Beautiful Garland
December Challenge 2018 Division 2
Chef and Interactive Contests, Chef and An Ideal Problem
August Challenge 2019 Division 2
Football, Distribute Apples
India