December Challenge 2018 Division 2
Max and Electrical Panel, Directing Edges, Chef and Interactive XOR, Chef and Meatballs, Chef and Interactive Contests, Chef and An Ideal Problem, (Challenge) Delete DAG
October Mega Cook-Off 2019 Division 2
Moonwalk, Cakewalk, Medel, Hidden Sequence, D-Or
November Challenge 2020 Division 1
Chef and the Combination Lock
November Challenge 2021 Division 2 (Unrated)
Flip or Compress, Wildcard Replacement, Xor Equation, Weird Palindrome Making, Hill Sequence, Equal Coins, Maximise the bridges
CodeChef Starters 17 Division 2 (Rated)
Binary Inversion, GCD of Prefixes, String Game, Partition It, New Piece
Colombia