March Challenge 2020 Division 2
XOR Engine, Pintu and Fruits, Ada Bishop 2
April Challenge 2020 Division 2
Unit GCD, Sell All the Cars, COVID Pandemic and Long Queue
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
Ada King, Chef and Card Game, Chef and Strings
October Challenge 2020 Division 2
Positive AND, Replace for X, Covid Run, Chef and Easy Queries
November Challenge 2020 Division 2
Restore Sequence, Ada and Dishes
February Challenge 2021 Division 3
Frog Sort, Highest Divisor, Maximise Function, Chef and Meetings
March Challenge 2021 Division 3
Interesting XOR!, Chef and Groups, College Life 4, Space Arrays, No Time to Wait
India