October Challenge 2017
A Balanced Contest, Max Mex
September Mega Cook-Off 2018 Division 2
ATM Machine, Make a Permutation
November Challenge 2018 Division 2
Chef and Ridges, Chef and Happiness, Chef and Difficult Contests
October Challenge 2018 Division 2
Minimize Digitsum, Chef and Serves, Byte to Bit
January Challenge 2019 Division 2
Yet Another Problem About Sequences, Fancy Quotes, Chef and Modulo Game, Distinct Pairs, Lucky Number Game
February Challenge 2019 Division 2
Manhattan Rectangle, Chef and Magical Jars, Chef and Secret Ingredients, Appy and Contest, Art of Balance, Deputy Chef
February Cook-Off 2019 Division 2
Max Range Queries, Chef and Secret Password, Buying New Tablet, Chef and Party
India