April Challenge 2020 Division 2
Unit GCD, Sell All the Cars, COVID Pandemic and Long Queue, Strange Number
May Challenge 2020 Division 2
Coronavirus Spread, Isolation Centers
June Challenge 2020 Division 2
Even Matrix, The Tom and Jerry Game!, Chef and Icecream, Chef and String, Chef and Price Control
July Challenge 2020 Division 2
Missing a Point, Chef and Strings, Chef and Card Game, Chefina and Swaps, Ada King
July Cook-Off 2020 Division 2
Even-tual Reduction, OR-thodox Distinction
December Challenge 2020 Division 2
Positive Prefixes, Even Pair Sum, Vaccine Production, Vaccine Distribution
April Challenge 2021 Division 3
Worthy Matrix, Chef and Dice, Valid Pair, World Record, Strong Language
India