September Challenge 2017
Minimum Good Permutation, Little Chef and Sums, Chef and Pick Digit
October Challenge 2017
Max Mex, A Balanced Contest
September Lunchtime 2017
Chef and Cook-Off Contests
January Challenge 2018
Partition the numbers, Rectangle, Maximum Score, K-Concatenation
February Challenge 2018
Chef And His Characters, Chef And The Patents, Akanksha and End of Semester, Car-pal Tunnel, Permutation and Palindrome
March Challenge 2018 DIV 2
A Big Sale, Minion Chef and Bananas, Minions and Voting, Chef and Glove, Chef and Easy Problem, Pishty and Triangles, Mix the Colors
March Lunchtime 2018 Division 1 (Unrated)
Three Integers, Magic Elements
December Challenge 2018 Division 2
Chef and Interactive Contests, Chef and An Ideal Problem
Insomnia 2018 (Rated)
Split Sums, Strange Swaps
January Challenge 2019 Division 2
Lucky Number Game, Fancy Quotes, Chef and Modulo Game, Distinct Pairs
February Challenge 2019 Division 2
Chef and Magical Jars, Chef and Secret Ingredients, Appy and Contest, Deputy Chef
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