September Challenge 2017
Minimum Good Permutation, Little Chef and Sums
October Challenge 2017
Max Mex, A Balanced Contest
November Challenge 2017
Periodic Palindrome Construction, Villages and Tribes
September Lunchtime 2017
Chef and Cook-Off Contests
March Challenge 2019 Division 2
Chef got Recipes, Chef and Number Game, Chef and a Beautiful Digit
May Challenge 2020 Division 2
Coronavirus Spread, Isolation Centers
February Lunchtime 2020 Division 2
At the Gates, Not All Flavours
India