November Challenge 2018 Division 2
Appy Loves One, Good Median, Chef, Primes and Trees (Challenge), Chef and Difficult Contests, Chef and Happiness, Chef and Ridges
January Challenge 2019 Division 2
Different Neighbours, Lucky Number Game, Distinct Pairs, Chef and Modulo Game, Fancy Quotes
February Cook-Off 2019 Division 2
Buying New Tablet, Chef and Party, Chef and Secret Password, Max Range Queries
February Lunchtime 2019 Division 2
Average Number, The Tricky Deal
March Challenge 2019 Division 2
Chef got Recipes, Chef and Number Game, Yet Again a Subarray Problem, Chef and a Beautiful Digit
April Challenge 2019 Division 1
Playing with Numbers, Subtree Removal
India