August Challenge 2018 Division 2
Spell Bob, Sheokand and Number
December Challenge 2018 Division 2
Chef and Interactive Contests, Chef and An Ideal Problem
October Challenge 2018 Division 2
Chef and Serves, Byte to Bit
February Challenge 2019 Division 2
Chef and Secret Ingredients, Deputy Chef, Art of Balance, Appy and Contest, Chef and Magical Jars, Manhattan Rectangle
April Challenge 2019 Division 2
Friend or Girlfriend, Maximum Remaining, Fencing
September Challenge 2019 Division 2
Easy Fibonacci, Chef and Interesting Subsequences
India