September Challenge 2017
Little Chef and Sums, Minimum Good Permutation
January Lunchtime 2018
Chef and Game with Sequence
February Challenge 2018
Broken Clock, Chef And His Characters, Chef And The Patents, Car-pal Tunnel, Permutation and Palindrome
March Challenge 2018 DIV 2
Chef and Easy Problem, Minion Chef and Bananas, Minions and Voting, Chef and Glove, Mix the Colors, A Big Sale, Pishty and Triangles
March Cook-off 2018 Division 1
Chef Goes to the Cinema, Chef Restores a Matrix
March Lunchtime 2018 Division 1 (Unrated)
Magic Elements, Three Integers
Insomnia 2018 (Rated)
Split Sums, Strange Swaps
Code Melange (Rated)
XD Subsequences, The Deadly Sin, Candy Love
April Challenge 2020 Division 1
Factor Tree, Leaked Answers (Challenge), Ready Bitwise, Perfect Power Divisors, Squared Subsequences, Strange Number
March Cook-Off 2020 Division 1
Mysterious Sequence, Maximize Letter Beauty, Escape the Tree
March Lunchtime 2020 Division 1 (Unrated)
Maximize LCM, Strip in a Tree!
April Lunchtime 2020 Division 1
Triangle Query, Positive Mex
