May Challenge 2020 Division 2
Isolation Centers, Coronavirus Spread
January Challenge 2021 Division 3
Fair Elections, Chef and Division 3, Point Of Impact, Encoded String
January Lunchtime 2021 Division 3 (Unrated)
Even Sum, Even Differences, Pair Me, Ashishgup and Interviews
February Challenge 2021 Division 3
Frog Sort, Chef and Meetings, Maximise Function, Highest Divisor
March Challenge 2021 Division 3
Interesting XOR!, Chef and Groups, College Life 4, Paparazzi Gennady, Space Arrays, No Time to Wait
India