December Challenge 2020 Division 2
Even Pair Sum, Vaccine Production, Vaccine Distribution, Positive Prefixes
January Challenge 2021 Division 3
Watching CPL, Fair Elections, Chef and Division 3, Point Of Impact, Encoded String
February Challenge 2021 Division 3
Highest Divisor, Maximise Function, Multiple Games, Chef and Meetings, Team Name, Frog Sort, Prime Game
March Challenge 2021 Division 2
Interesting XOR!, College Life 4, Paparazzi Gennady, Space Arrays
April Challenge 2021 Division 2
Worthy Matrix, Boolean Game, Chef and Dice, Binary String MEX
May Challenge 2021 Division 2 (Rated)
Valid Paths, Tree House, An Interesting Sequence, Xor Equality, Tic Tac Toe, Modular Equation
India