September Lunchtime 2015
Sum of palindromic numbers
September Challenge 2016
Chef and digits of a number
May Challenge 2018 Division 2
Xor Again, Minimum Deletions
August Challenge 2018 Division 2
Sheokand and Number, Spell Bob
November Challenge 2018 Division 2
Chef and Difficult Contests
February Challenge 2019 Division 2
Chef and Secret Ingredients, Appy and Contest, Deputy Chef
June Challenge 2019 Division 2
Road Signs, Guddu on a Date
December Challenge 2019 Division 2
Plus Multiply, That Is My Score!
May Cook-Off 2020 Division 2
Chef and Recipe, Chef, Chefina and Their Friendship
May Lunchtime 2020 Division 2
Weird Walk, Lost Weekends
June Challenge 2020 Division 2
The Tom and Jerry Game!, Chef and Price Control, Chef and String, Covid Sampling (Challenge), Chef and Icecream, Even Matrix
August Challenge 2020 Division 2
Chef Wars - Return of the Jedi, Another Card Game Problem, Chef and Linear Chess, Smallest KMP
India