December Challenge 2018 Division 2
Chef and An Ideal Problem, Chef and Interactive Contests
February Challenge 2019 Division 2
Chef and Magical Jars, Chef and Secret Ingredients, Appy and Contest, Deputy Chef
February Cook-Off 2019 Division 2
Buying New Tablet, Chef and Party
February Lunchtime 2019 Division 2
Average Number, The Tricky Deal
March Challenge 2019 Division 2
Chef and Number Game, Chef and a Beautiful Digit
April Challenge 2019 Division 2
Fencing, Subtree Removal, Friend or Girlfriend, Maximum Remaining
February Challenge 2020 Division 2
The Theatre Problem, School of Geometry, Hard Cash
April Cook-Off 2020 Division 2
Matrix Decomposition, Lift Requests
January Lunchtime 2020 Division 2
Bob and His Friends, Chef and Street Food
UWCOI 2020 (Rated for all)
Button Pairs, Find maximum in an Array
June Challenge 2020 Division 2
Even Matrix, The Tom and Jerry Game!, Chef and Icecream, Covid Sampling (Challenge), Chef and String, Chef and Price Control
India